shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <stdlib.h>
  22 #include <math.h>
  23 #include <string.h>
  24 #include <gtk/gtkalignment.h>
  25 #include <glib/gi18n.h>
  26 #include <gtk/gtkbindings.h>
  27 #include <gtk/gtkselection.h>
  28 #include <gtk/gtkclipboard.h>
  29 #include <gdk/gdkkeysyms.h>
  30
  31 #include "ev-marshal.h"
  32 #include "ev-view.h"
  33 #include "ev-view-private.h"
  34 #include "ev-utils.h"
  35 #include "ev-document-links.h"
  36 #include "ev-document-images.h"
  37 #include "ev-document-find.h"
  38 #include "ev-document-transition.h"
  39 #include "ev-document-forms.h"
  40 #include "ev-document-misc.h"
  41 #include "ev-job-queue.h"
  42 #include "ev-page-cache.h"
  43 #include "ev-pixbuf-cache.h"
  44 #if !GTK_CHECK_VERSION (2, 11, 7)
  45 #include "ev-tooltip.h"
  46 #endif
  47 #include "ev-application.h"
  48
  49 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  50 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  51 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  52
  53
  54 enum {
  55         PROP_0,
  56         PROP_FIND_STATUS,
  57         PROP_CONTINUOUS,
  58         PROP_DUAL_PAGE,
  59         PROP_FULLSCREEN,
  60         PROP_PRESENTATION,
  61         PROP_SIZING_MODE,
  62         PROP_ZOOM,
  63         PROP_ROTATION,
  64         PROP_HAS_SELECTION,
  65 };
  66
  67 enum {
  68         SIGNAL_BINDING_ACTIVATED,
  69         SIGNAL_ZOOM_INVALID,
  70         SIGNAL_HANDLE_LINK,
  71         SIGNAL_EXTERNAL_LINK,
  72         SIGNAL_POPUP_MENU,
  73         N_SIGNALS,
  74 };
  75
  76 enum {
  77         TARGET_DND_URI,
  78         TARGET_DND_TEXT,
  79         TARGET_DND_IMAGE
  80 };
  81
  82 enum {
  83         TARGET_STRING,
  84         TARGET_TEXT,
  85         TARGET_COMPOUND_TEXT,
  86         TARGET_UTF8_STRING,
  87         TARGET_TEXT_BUFFER_CONTENTS
  88 };
  89
  90 static const GtkTargetEntry clipboard_targets[] = {
  91         { "STRING", 0, TARGET_STRING },
  92         { "TEXT",   0, TARGET_TEXT },
  93         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  94         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  95 };
  96
  97 static const GtkTargetEntry view_drop_targets[] = {
  98         { "text/uri-list", 0, 0 }
  99 };
 100
 101 static guint signals[N_SIGNALS];
 102
 103 typedef enum {
 104         EV_VIEW_FIND_NEXT,
 105         EV_VIEW_FIND_PREV
 106 } EvViewFindDirection;
 107
 108 #define ZOOM_IN_FACTOR  1.2
 109 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 110
 111 #define MIN_SCALE 0.05409
 112 #define MAX_SCALE 4.0
 113
 114 #define SCROLL_TIME 150
 115
 116 /*** Scrolling ***/
 117 static void       scroll_to_current_page                     (EvView *view,
 118                                                               GtkOrientation orientation);
 119 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
 120                                                               GtkAdjustment      *hadjustment,
 121                                                               GtkAdjustment      *vadjustment);
 122 static void       view_update_range_and_current_page         (EvView             *view);
 123 static void       set_scroll_adjustment                      (EvView             *view,
 124                                                               GtkOrientation      orientation,
 125                                                               GtkAdjustment      *adjustment);
 126 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 127                                                               guint               keyval,
 128                                                               GdkModifierType modifiers,
 129                                                               EvScrollType       scroll,
 130                                                               gboolean            horizontal);
 131 static void       ensure_rectangle_is_visible                (EvView             *view,
 132                                                               GdkRectangle       *rect);
 133
 134 /*** Geometry computations ***/
 135 static void       compute_border                             (EvView             *view,
 136                                                               int                 width,
 137                                                               int                 height,
 138                                                               GtkBorder          *border);
 139 static void       get_page_y_offset                          (EvView *view,
 140                                                               int page,
 141                                                               double zoom,
 142                                                               int *y_offset);
 143 static gboolean   get_page_extents                           (EvView             *view,
 144                                                               gint                page,
 145                                                               GdkRectangle       *page_area,
 146                                                               GtkBorder          *border);
 147 static void       view_rect_to_doc_rect                      (EvView             *view,
 148                                                               GdkRectangle       *view_rect,
 149                                                               GdkRectangle       *page_area,
 150                                                               EvRectangle        *doc_rect);
 151 static void       doc_rect_to_view_rect                      (EvView             *view,
 152                                                               int                 page,
 153                                                               EvRectangle        *doc_rect,
 154                                                               GdkRectangle       *view_rect);
 155 static void       find_page_at_location                      (EvView             *view,
 156                                                               gdouble             x,
 157                                                               gdouble             y,
 158                                                               gint               *page,
 159                                                               gint               *x_offset,
 160                                                               gint               *y_offset);
 161 static gboolean  doc_point_to_view_point                     (EvView             *view,
 162                                                               int                 page,
 163                                                               EvPoint            *doc_point,
 164                                                               GdkPoint           *view_point);
 165 /*** Hyperrefs ***/
 166 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 167                                                               gdouble             x,
 168                                                               gdouble             y);
 169 static char*      tip_from_link                              (EvView             *view,
 170                                                               EvLink             *link);
 171 /*** Forms ***/
 172 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 173                                                                gdouble            x,
 174                                                                gdouble            y);
 175
 176 /*** GtkWidget implementation ***/
 177 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 178                                                               GtkRequisition     *requisition);
 179 static void       ev_view_size_request_continuous            (EvView             *view,
 180                                                               GtkRequisition     *requisition);
 181 static void       ev_view_size_request_dual_page             (EvView             *view,
 182                                                               GtkRequisition     *requisition);
 183 static void       ev_view_size_request_single_page           (EvView             *view,
 184                                                               GtkRequisition     *requisition);
 185 static void       ev_view_size_request                       (GtkWidget          *widget,
 186                                                               GtkRequisition     *requisition);
 187 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 188                                                               GtkAllocation      *allocation);
 189 static void       ev_view_realize                            (GtkWidget          *widget);
 190 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 191                                                               GdkEventScroll     *event);
 192 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 193                                                               GdkEventExpose     *event);
 194 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 195 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 196                                                               GdkEventButton     *event);
 197 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 198                                                               GdkEventMotion     *event);
 199 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 200                                                               GdkEventButton     *event);
 201 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 202                                                               GdkEventCrossing   *event);
 203 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 204                                                               GdkEventCrossing   *event);
 205 static void       ev_view_style_set                          (GtkWidget          *widget,
 206                                                               GtkStyle           *old_style);
 207 static void       ev_view_remove_all                         (EvView             *view);
 208
 209 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 210
 211 /*** Drawing ***/
 212 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 213 static void       draw_rubberband                            (GtkWidget          *widget,
 214                                                               GdkWindow          *window,
 215                                                               const GdkRectangle *rect,
 216                                                               guchar              alpha);
 217 static void       highlight_find_results                     (EvView             *view,
 218                                                               int                 page);
 219 static void       draw_one_page                              (EvView             *view,
 220                                                               gint                page,
 221                                                               cairo_t            *cr,
 222                                                               GdkRectangle       *page_area,
 223                                                               GtkBorder          *border,
 224                                                               GdkRectangle       *expose_area,
 225                                                               gboolean           *page_ready);
 226 static void       draw_loading_text                          (EvView             *view,
 227                                                               GdkRectangle       *page_area,
 228                                                               GdkRectangle       *expose_area);
 229
 230 /*** Callbacks ***/
 231 static void       find_changed_cb                            (EvDocument         *document,
 232                                                               int                 page,
 233                                                               EvView             *view);
 234 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 235                                                               GdkRegion          *region,
 236                                                               EvView             *view);
 237 static void       page_changed_cb                            (EvPageCache        *page_cache,
 238                                                               int                 new_page,
 239                                                               EvView             *view);
 240 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 241                                                               EvView             *view);
 242
 243 /*** GObject ***/
 244 static void       ev_view_finalize                           (GObject            *object);
 245 static void       ev_view_destroy                            (GtkObject          *object);
 246 static void       ev_view_set_property                       (GObject            *object,
 247                                                               guint               prop_id,
 248                                                               const GValue       *value,
 249                                                               GParamSpec         *pspec);
 250 static void       ev_view_get_property                       (GObject            *object,
 251                                                               guint               prop_id,
 252                                                               GValue             *value,
 253                                                               GParamSpec         *pspec);
 254 static void       ev_view_class_init                         (EvViewClass        *class);
 255 static void       ev_view_init                               (EvView             *view);
 256
 257 /*** Zoom and sizing ***/
 258 static double   zoom_for_size_fit_width                      (int doc_width,
 259                                                               int doc_height,
 260                                                               int target_width,
 261                                                               int target_height,
 262                                                               int vsb_width);
 263 static double   zoom_for_size_fit_height                     (int doc_width,
 264                                                               int doc_height,
 265                                                               int target_width,
 266                                                               int target_height,
 267                                                               int vsb_height);
 268 static double   zoom_for_size_best_fit                       (int doc_width,
 269                                                               int doc_height,
 270                                                               int target_width,
 271                                                               int target_height,
 272                                                               int vsb_width,
 273                                                               int hsb_width);
 274 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 275                                                               int     width,
 276                                                               int     height);
 277 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 278                                                                 int     width,
 279                                                                 int     height,
 280                                                                 int     vsb_width,
 281                                                                 int     hsb_height);
 282 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 283                                                                 int     width,
 284                                                                 int     height,
 285                                                                 int     vsb_width,
 286                                                                 int     hsb_height);
 287 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 288                                                                 int     width,
 289                                                                 int     height,
 290                                                                 int     vsb_width,
 291                                                                 int     hsb_height);
 292 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 293                                                                 int     width,
 294                                                                 int     height,
 295                                                                 int     vsb_width,
 296                                                                 int     hsb_height);
 297 /*** Cursors ***/
 298 static GdkCursor* ev_view_create_invisible_cursor            (void);
 299 static void       ev_view_set_cursor                         (EvView             *view,
 300                                                               EvViewCursor        new_cursor);
 301 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 302                                                               gint x,
 303                                                               gint y);
 304
 305 /*** Find ***/
 306 static void       update_find_status_message                 (EvView             *view,
 307                                                               gboolean            this_page);
 308 static void       ev_view_set_find_status                    (EvView             *view,
 309                                                               const char         *message);
 310 static void       jump_to_find_result                        (EvView             *view);
 311 static void       jump_to_find_page                          (EvView             *view,
 312                                                               EvViewFindDirection direction,
 313                                                               gint                shift);
 314
 315 /*** Selection ***/
 316 static void       compute_selections                         (EvView             *view,
 317                                                               EvSelectionStyle    style,
 318                                                               GdkPoint           *start,
 319                                                               GdkPoint           *stop);
 320 static void       clear_selection                            (EvView             *view);
 321 static void       selection_free                             (EvViewSelection    *selection);
 322 static char*      get_selected_text                          (EvView             *ev_view);
 323 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 324                                                               GtkSelectionData   *selection_data,
 325                                                               guint               info,
 326                                                               gpointer            data);
 327 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 328                                                               gpointer            data);
 329 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 330
 331 /*** Presentation ***/
 332 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 333 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 334
 335
 336 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 337
 338 static void
 339 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 340 {
 341         GdkPoint view_point;
 342
 343         if (view->document == NULL) {
 344                 return;
 345         }
 346
 347         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 348
 349         if (orientation == GTK_ORIENTATION_VERTICAL) {
 350                 view->pending_point.y = 0;
 351         } else {
 352                 view->pending_point.x = 0;
 353         }
 354
 355         if (orientation == GTK_ORIENTATION_VERTICAL) {
 356                 if (view->continuous) {
 357                         gtk_adjustment_clamp_page (view->vadjustment,
 358                                                    view_point.y - view->spacing / 2,
 359                                                    view_point.y + view->vadjustment->page_size);
 360                 } else {
 361                         gtk_adjustment_set_value (view->vadjustment,
 362                                                   CLAMP (view_point.y,
 363                                                   view->vadjustment->lower,
 364                                                   view->vadjustment->upper -
 365                                                   view->vadjustment->page_size));
 366                 }
 367         } else {
 368                 if (view->dual_page) {
 369                         gtk_adjustment_clamp_page (view->hadjustment,
 370                                                    view_point.x,
 371                                                    view_point.x + view->hadjustment->page_size);
 372                 } else {
 373                         gtk_adjustment_set_value (view->hadjustment,
 374                                                   CLAMP (view_point.x,
 375                                                   view->hadjustment->lower,
 376                                                   view->hadjustment->upper -
 377                                                   view->hadjustment->page_size));
 378                 }
 379         }
 380 }
 381
 382 static void
 383 view_set_adjustment_values (EvView         *view,
 384                             GtkOrientation  orientation)
 385 {
 386         GtkWidget *widget = GTK_WIDGET (view);
 387         GtkAdjustment *adjustment;
 388         int requisition;
 389         int allocation;
 390
 391         double factor;
 392         gint new_value;
 393
 394         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 395                 requisition = widget->requisition.width;
 396                 allocation = widget->allocation.width;
 397                 adjustment = view->hadjustment;
 398         } else {
 399                 requisition = widget->requisition.height;
 400                 allocation = widget->allocation.height;
 401                 adjustment = view->vadjustment;
 402         }
 403
 404         if (!adjustment)
 405                 return;
 406
 407         factor = 1.0;
 408         switch (view->pending_scroll) {
 409                 case SCROLL_TO_KEEP_POSITION:
 410                 case SCROLL_TO_FIND_LOCATION:
 411                         factor = (adjustment->value) / adjustment->upper;
 412                         break;
 413                 case SCROLL_TO_PAGE_POSITION:
 414                         break;
 415                 case SCROLL_TO_CENTER:
 416                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 417                         break;
 418         }
 419
 420         adjustment->page_size = allocation;
 421         adjustment->step_increment = allocation * 0.1;
 422         adjustment->page_increment = allocation * 0.9;
 423         adjustment->lower = 0;
 424         adjustment->upper = MAX (allocation, requisition);
 425
 426         /*
 427          * We add 0.5 to the values before to average out our rounding errors.
 428          */
 429         switch (view->pending_scroll) {
 430                 case SCROLL_TO_KEEP_POSITION:
 431                 case SCROLL_TO_FIND_LOCATION:
 432                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 433                         gtk_adjustment_set_value (adjustment, (int)new_value);
 434                         break;
 435                 case SCROLL_TO_PAGE_POSITION:
 436                         scroll_to_current_page (view, orientation);
 437                         break;
 438                 case SCROLL_TO_CENTER:
 439                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 440                                            0, adjustment->upper - adjustment->page_size);
 441                         gtk_adjustment_set_value (adjustment, (int)new_value);
 442                         break;
 443         }
 444
 445         gtk_adjustment_changed (adjustment);
 446 }
 447
 448 static void
 449 view_update_range_and_current_page (EvView *view)
 450 {
 451         gint current_page;
 452         gint best_current_page = -1;
 453
 454         /* Presentation trumps all other modes */
 455         if (view->presentation) {
 456                 view->start_page = view->current_page;
 457                 view->end_page = view->current_page;
 458         } else if (view->continuous) {
 459                 GdkRectangle current_area, unused, page_area;
 460                 GtkBorder border;
 461                 gboolean found = FALSE;
 462                 gint area_max = -1, area;
 463                 int i;
 464
 465                 if (!(view->vadjustment && view->hadjustment))
 466                         return;
 467
 468                 current_area.x = view->hadjustment->value;
 469                 current_area.width = view->hadjustment->upper;
 470                 current_area.y = view->vadjustment->value;
 471                 current_area.height = view->vadjustment->page_size;
 472
 473                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 474
 475                         get_page_extents (view, i, &page_area, &border);
 476
 477                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 478                                 area = unused.width * unused.height;
 479
 480                                 if (!found) {
 481                                         area_max = area;
 482                                         view->start_page = i;
 483                                         found = TRUE;
 484                                         best_current_page = i;
 485                                 }
 486                                 if (area > area_max) {
 487                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 488                                         area_max = area;
 489                                 }
 490
 491                                 view->end_page = i;
 492                         } else if (found && view->current_page <= view->end_page) {
 493                                 break;
 494                         }
 495                 }
 496
 497         } else if (view->dual_page) {
 498                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 499                         view->start_page = view->current_page;
 500                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 501                                 view->end_page = view->start_page + 1;
 502                         else
 503                                 view->end_page = view->start_page;
 504                 } else {
 505                         if (view->current_page < 1)
 506                                 view->start_page = view->current_page;
 507                         else
 508                                 view->start_page = view->current_page - 1;
 509                         view->end_page = view->current_page;
 510                 }
 511         } else {
 512                 view->start_page = view->current_page;
 513                 view->end_page = view->current_page;
 514         }
 515
 516         best_current_page = MAX (best_current_page, view->start_page);
 517         current_page = ev_page_cache_get_current_page (view->page_cache);
 518
 519         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 520                 view->current_page = best_current_page;
 521                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 522         }
 523
 524         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 525                                         view->start_page,
 526                                         view->end_page,
 527                                         view->rotation,
 528                                         view->scale,
 529                                         view->selection_info.selections);
 530 }
 531
 532 static void
 533 set_scroll_adjustment (EvView *view,
 534                        GtkOrientation  orientation,
 535                        GtkAdjustment  *adjustment)
 536 {
 537         GtkAdjustment **to_set;
 538
 539         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 540                 to_set = &view->hadjustment;
 541         else
 542                 to_set = &view->vadjustment;
 543
 544         if (*to_set != adjustment) {
 545                 if (*to_set) {
 546                         g_signal_handlers_disconnect_by_func (*to_set,
 547                                                               (gpointer) on_adjustment_value_changed,
 548                                                               view);
 549                         g_object_unref (*to_set);
 550                 }
 551
 552                 *to_set = adjustment;
 553                 view_set_adjustment_values (view, orientation);
 554
 555                 if (*to_set) {
 556                         g_object_ref (*to_set);
 557                         g_signal_connect (*to_set, "value_changed",
 558                                           G_CALLBACK (on_adjustment_value_changed), view);
 559                 }
 560         }
 561 }
 562
 563 static void
 564 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 565                                 GtkAdjustment  *hadjustment,
 566                                 GtkAdjustment  *vadjustment)
 567 {
 568         EvView *view = EV_VIEW (layout);
 569
 570         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 571         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 572
 573         on_adjustment_value_changed (NULL, view);
 574 }
 575
 576 static void
 577 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 578                            guint           keyval,
 579                            GdkModifierType modifiers,
 580                            EvScrollType    scroll,
 581                            gboolean        horizontal)
 582 {
 583   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 584
 585   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 586                                 "binding_activated", 2,
 587                                 EV_TYPE_SCROLL_TYPE, scroll,
 588                                 G_TYPE_BOOLEAN, horizontal);
 589   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 590                                 "binding_activated", 2,
 591                                 EV_TYPE_SCROLL_TYPE, scroll,
 592                                 G_TYPE_BOOLEAN, horizontal);
 593 }
 594
 595 void
 596 ev_view_scroll (EvView        *view,
 597                 EvScrollType   scroll,
 598                 gboolean horizontal)
 599 {
 600         GtkAdjustment *adjustment;
 601         double value, increment;
 602         gboolean first_page = FALSE;
 603         gboolean last_page = FALSE;
 604
 605         view->jump_to_find_result = FALSE;
 606
 607         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 608                 switch (scroll) {
 609                         case EV_SCROLL_PAGE_BACKWARD:
 610                         case EV_SCROLL_STEP_BACKWARD:
 611                                 ev_view_previous_page (view);
 612                                 break;
 613                         case EV_SCROLL_PAGE_FORWARD:
 614                         case EV_SCROLL_STEP_FORWARD:
 615                                 ev_view_next_page (view);
 616                                 break;
 617                         default:
 618                                 break;
 619                 }
 620                 return;
 621         }
 622
 623         /* Assign values for increment and vertical adjustment */
 624         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 625         increment = adjustment->page_size * 0.75;
 626         value = adjustment->value;
 627
 628         /* Assign boolean for first and last page */
 629         if (view->current_page == 0)
 630                 first_page = TRUE;
 631         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 632                 last_page = TRUE;
 633
 634         switch (scroll) {
 635                 case EV_SCROLL_PAGE_BACKWARD:
 636                         /* Do not jump backwards if at the first page */
 637                         if (value == (adjustment->lower) && first_page) {
 638                                 /* Do nothing */
 639                                 /* At the top of a page, assign the upper bound limit of previous page */
 640                         } else if (value == (adjustment->lower)) {
 641                                 value = adjustment->upper - adjustment->page_size;
 642                                 ev_view_previous_page (view);
 643                                 /* Jump to the top */
 644                         } else {
 645                                 value = MAX (value - increment, adjustment->lower);
 646                         }
 647                         break;
 648                 case EV_SCROLL_PAGE_FORWARD:
 649                         /* Do not jump forward if at the last page */
 650                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 651                                 /* Do nothing */
 652                         /* At the bottom of a page, assign the lower bound limit of next page */
 653                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 654                                 value = 0;
 655                                 ev_view_next_page (view);
 656                         /* Jump to the bottom */
 657                         } else {
 658                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 659                         }
 660                         break;
 661                 case EV_SCROLL_STEP_BACKWARD:
 662                         value -= adjustment->step_increment;
 663                         break;
 664                 case EV_SCROLL_STEP_FORWARD:
 665                         value += adjustment->step_increment;
 666                         break;
 667                 case EV_SCROLL_STEP_DOWN:
 668                         value -= adjustment->step_increment / 10;
 669                         break;
 670                 case EV_SCROLL_STEP_UP:
 671                         value += adjustment->step_increment / 10;
 672                         break;
 673                 default:
 674                         break;
 675         }
 676
 677         value = CLAMP (value, adjustment->lower,
 678                        adjustment->upper - adjustment->page_size);
 679
 680         gtk_adjustment_set_value (adjustment, value);
 681 }
 682
 683 #define MARGIN 5
 684
 685 static void
 686 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 687 {
 688         GtkWidget *widget = GTK_WIDGET (view);
 689         GtkAdjustment *adjustment;
 690         int value;
 691
 692         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 693
 694         adjustment = view->vadjustment;
 695
 696         if (rect->y < adjustment->value) {
 697                 value = MAX (adjustment->lower, rect->y - MARGIN);
 698                 gtk_adjustment_set_value (view->vadjustment, value);
 699         } else if (rect->y + rect->height >
 700                    adjustment->value + widget->allocation.height) {
 701                 value = MIN (adjustment->upper, rect->y + rect->height -
 702                              widget->allocation.height + MARGIN);
 703                 gtk_adjustment_set_value (view->vadjustment, value);
 704         }
 705
 706         adjustment = view->hadjustment;
 707
 708         if (rect->x < adjustment->value) {
 709                 value = MAX (adjustment->lower, rect->x - MARGIN);
 710                 gtk_adjustment_set_value (view->hadjustment, value);
 711         } else if (rect->x + rect->height >
 712                    adjustment->value + widget->allocation.width) {
 713                 value = MIN (adjustment->upper, rect->x + rect->width -
 714                              widget->allocation.width + MARGIN);
 715                 gtk_adjustment_set_value (view->hadjustment, value);
 716         }
 717
 718         gtk_widget_queue_resize (GTK_WIDGET (view));
 719 }
 720
 721 /*** Geometry computations ***/
 722
 723 static void
 724 compute_border (EvView *view, int width, int height, GtkBorder *border)
 725 {
 726         if (view->presentation) {
 727                 border->left = 0;
 728                 border->right = 0;
 729                 border->top = 0;
 730                 border->bottom = 0;
 731         } else {
 732                 ev_document_misc_get_page_border_size (width, height, border);
 733         }
 734 }
 735
 736 static void
 737 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 738 {
 739         int max_width, offset;
 740         GtkBorder border;
 741
 742         g_return_if_fail (y_offset != NULL);
 743
 744         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 745
 746         compute_border (view, max_width, max_width, &border);
 747
 748         if (view->dual_page) {
 749                 ev_page_cache_get_height_to_page (view->page_cache, page,
 750                                                   view->rotation, zoom, NULL, &offset);
 751                 offset += ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 + 1) * view->spacing + ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 ) * (border.top + border.bottom);
 752         } else {
 753                 ev_page_cache_get_height_to_page (view->page_cache, page,
 754                                                   view->rotation, zoom, &offset, NULL);
 755                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 756         }
 757
 758         *y_offset = offset;
 759         return;
 760 }
 761
 762 static gboolean
 763 get_page_extents (EvView       *view,
 764                   gint          page,
 765                   GdkRectangle *page_area,
 766                   GtkBorder    *border)
 767 {
 768         GtkWidget *widget;
 769         int width, height;
 770
 771         widget = GTK_WIDGET (view);
 772
 773         /* Get the size of the page */
 774         ev_page_cache_get_size (view->page_cache, page,
 775                                 view->rotation,
 776                                 view->scale,
 777                                 &width, &height);
 778         compute_border (view, width, height, border);
 779         page_area->width = width + border->left + border->right;
 780         page_area->height = height + border->top + border->bottom;
 781
 782         if (view->presentation) {
 783                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 784                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 785         } else if (view->continuous) {
 786                 gint max_width;
 787                 gint x, y;
 788
 789                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 790                                              view->scale, &max_width);
 791                 max_width = max_width + border->left + border->right;
 792                 /* Get the location of the bounding box */
 793                 if (view->dual_page) {
 794                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 795                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 796                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 797                                 x = x + (max_width - width - border->left - border->right);
 798                 } else {
 799                         x = view->spacing;
 800                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 801                 }
 802
 803                 get_page_y_offset (view, page, view->scale, &y);
 804
 805                 page_area->x = x;
 806                 page_area->y = y;
 807         } else {
 808                 gint x, y;
 809                 if (view->dual_page) {
 810                         gint width_2, height_2;
 811                         gint max_width = width;
 812                         gint max_height = height;
 813                         GtkBorder overall_border;
 814                         gint other_page;
 815
 816                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 817
 818                         /* First, we get the bounding box of the two pages */
 819                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 820                             && (0 <= other_page)) {
 821                                 ev_page_cache_get_size (view->page_cache,
 822                                                         other_page,
 823                                                         view->rotation,
 824                                                         view->scale,
 825                                                         &width_2, &height_2);
 826                                 if (width_2 > width)
 827                                         max_width = width_2;
 828                                 if (height_2 > height)
 829                                         max_height = height_2;
 830                         }
 831                         compute_border (view, max_width, max_height, &overall_border);
 832
 833                         /* Find the offsets */
 834                         x = view->spacing;
 835                         y = view->spacing;
 836
 837                         /* Adjust for being the left or right page */
 838                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 839                                 x = x + max_width - width;
 840                         else
 841                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 842
 843                         y = y + (max_height - height)/2;
 844
 845                         /* Adjust for extra allocation */
 846                         x = x + MAX (0, widget->allocation.width -
 847                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 848                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 849                 } else {
 850                         x = view->spacing;
 851                         y = view->spacing;
 852
 853                         /* Adjust for extra allocation */
 854                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 855                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 856                 }
 857
 858                 page_area->x = x;
 859                 page_area->y = y;
 860         }
 861
 862         return TRUE;
 863 }
 864
 865 static void
 866 view_point_to_doc_point (EvView *view,
 867                          GdkPoint *view_point,
 868                          GdkRectangle *page_area,
 869                          double  *doc_point_x,
 870                          double  *doc_point_y)
 871 {
 872         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 873         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 874 }
 875
 876 static void
 877 view_rect_to_doc_rect (EvView *view,
 878                        GdkRectangle *view_rect,
 879                        GdkRectangle *page_area,
 880                        EvRectangle  *doc_rect)
 881 {
 882         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 883         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 884         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 885         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 886 }
 887
 888 static gboolean
 889 doc_point_to_view_point (EvView       *view,
 890                          int           page,
 891                          EvPoint      *doc_point,
 892                          GdkPoint     *view_point)
 893 {
 894         GdkRectangle page_area;
 895         GtkBorder border;
 896         double x, y, view_x, view_y;
 897         int width, height;
 898
 899         ev_page_cache_get_size (view->page_cache, page,
 900                                 view->rotation,
 901                                 1.0,
 902                                 &width, &height);
 903
 904         if (view->rotation == 0) {
 905                 x = doc_point->x;
 906                 y = doc_point->y;
 907         } else if (view->rotation == 90) {
 908                 x = width - doc_point->y;
 909                 y = doc_point->x;
 910         } else if (view->rotation == 180) {
 911                 x = width - doc_point->x;
 912                 y = height - doc_point->y;
 913         } else if (view->rotation == 270) {
 914                 x = doc_point->y;
 915                 y = height - doc_point->x;
 916         } else {
 917                 g_assert_not_reached ();
 918         }
 919
 920         get_page_extents (view, page, &page_area, &border);
 921
 922         view_x = x * view->scale;
 923         view_y = y * view->scale;
 924         view_point->x = view_x + page_area.x;
 925         view_point->y = view_y + page_area.y;
 926
 927         return (view_x > 0 && view_x <= page_area.width &&
 928                 view_y > 0 && view_y <= page_area.height);
 929 }
 930
 931 static void
 932 doc_rect_to_view_rect (EvView       *view,
 933                        int           page,
 934                        EvRectangle  *doc_rect,
 935                        GdkRectangle *view_rect)
 936 {
 937         GdkRectangle page_area;
 938         GtkBorder border;
 939         double x, y, w, h;
 940         int width, height;
 941
 942         ev_page_cache_get_size (view->page_cache, page,
 943                                 view->rotation,
 944                                 1.0,
 945                                 &width, &height);
 946
 947         if (view->rotation == 0) {
 948                 x = doc_rect->x1;
 949                 y = doc_rect->y1;
 950                 w = doc_rect->x2 - doc_rect->x1;
 951                 h = doc_rect->y2 - doc_rect->y1;
 952         } else if (view->rotation == 90) {
 953                 x = width - doc_rect->y2;
 954                 y = doc_rect->x1;
 955                 w = doc_rect->y2 - doc_rect->y1;
 956                 h = doc_rect->x2 - doc_rect->x1;
 957         } else if (view->rotation == 180) {
 958                 x = width - doc_rect->x2;
 959                 y = height - doc_rect->y2;
 960                 w = doc_rect->x2 - doc_rect->x1;
 961                 h = doc_rect->y2 - doc_rect->y1;
 962         } else if (view->rotation == 270) {
 963                 x = doc_rect->y1;
 964                 y = height - doc_rect->x2;
 965                 w = doc_rect->y2 - doc_rect->y1;
 966                 h = doc_rect->x2 - doc_rect->x1;
 967         } else {
 968                 g_assert_not_reached ();
 969         }
 970
 971         get_page_extents (view, page, &page_area, &border);
 972
 973         view_rect->x = x * view->scale + page_area.x;
 974         view_rect->y = y * view->scale + page_area.y;
 975         view_rect->width = w * view->scale;
 976         view_rect->height = h * view->scale;
 977 }
 978
 979 static void
 980 find_page_at_location (EvView  *view,
 981                        gdouble  x,
 982                        gdouble  y,
 983                        gint    *page,
 984                        gint    *x_offset,
 985                        gint    *y_offset)
 986 {
 987         int i;
 988
 989         if (view->document == NULL)
 990                 return;
 991
 992         g_assert (page);
 993         g_assert (x_offset);
 994         g_assert (y_offset);
 995
 996         for (i = view->start_page; i <= view->end_page; i++) {
 997                 GdkRectangle page_area;
 998                 GtkBorder border;
 999
1000                 if (! get_page_extents (view, i, &page_area, &border))
1001                         continue;
1002
1003                 if ((x >= page_area.x + border.left) &&
1004                     (x < page_area.x + page_area.width - border.right) &&
1005                     (y >= page_area.y + border.top) &&
1006                     (y < page_area.y + page_area.height - border.bottom)) {
1007                         *page = i;
1008                         *x_offset = x - (page_area.x + border.left);
1009                         *y_offset = y - (page_area.y + border.top);
1010                         return;
1011                 }
1012         }
1013
1014         *page = -1;
1015 }
1016
1017 static gboolean
1018 location_in_text (EvView  *view,
1019                   gdouble  x,
1020                   gdouble  y)
1021 {
1022         GdkRegion *region;
1023         gint page = -1;
1024         gint x_offset = 0, y_offset = 0;
1025
1026         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1027
1028         if (page == -1)
1029                 return FALSE;
1030
1031         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1032
1033         if (region)
1034                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1035         else
1036                 return FALSE;
1037 }
1038
1039 static int
1040 ev_view_get_width (EvView *view)
1041 {
1042         return GTK_WIDGET (view)->allocation.width;
1043 }
1044
1045 static int
1046 ev_view_get_height (EvView *view)
1047 {
1048         return GTK_WIDGET (view)->allocation.height;
1049 }
1050
1051 static gboolean
1052 location_in_selected_text (EvView  *view,
1053                            gdouble  x,
1054                            gdouble  y)
1055 {
1056         gint page = -1;
1057         gint x_offset = 0, y_offset = 0;
1058         EvViewSelection *selection;
1059         GList *l = NULL;
1060
1061         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1062                 selection = (EvViewSelection *)l->data;
1063
1064                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1065
1066                 if (page != selection->page)
1067                         continue;
1068
1069                 if (selection->covered_region &&
1070                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1071                         return TRUE;
1072         }
1073
1074         return FALSE;
1075 }
1076
1077 static gboolean
1078 get_doc_point_from_offset (EvView *view,
1079                            gint    page,
1080                            gint    x_offset,
1081                            gint    y_offset,
1082                            gint   *x_new,
1083                            gint   *y_new)
1084 {
1085         int width, height;
1086         double x, y;
1087
1088         ev_page_cache_get_size (view->page_cache, page,
1089                                 view->rotation,
1090                                 1.0,
1091                                 &width, &height);
1092
1093         x_offset = x_offset / view->scale;
1094         y_offset = y_offset / view->scale;
1095
1096         if (view->rotation == 0) {
1097                 x = x_offset;
1098                 y = y_offset;
1099         } else if (view->rotation == 90) {
1100                 x = y_offset;
1101                 y = width - x_offset;
1102         } else if (view->rotation == 180) {
1103                 x = width - x_offset;
1104                 y = height - y_offset;
1105         } else if (view->rotation == 270) {
1106                 x = height - y_offset;
1107                 y = x_offset;
1108         } else {
1109                 g_assert_not_reached ();
1110         }
1111
1112         *x_new = x;
1113         *y_new = y;
1114
1115         return TRUE;
1116 }
1117
1118 /*** Hyperref ***/
1119 static EvLink *
1120 ev_view_get_link_at_location (EvView  *view,
1121                               gdouble  x,
1122                               gdouble  y)
1123 {
1124         gint page = -1;
1125         gint x_offset = 0, y_offset = 0;
1126         gint x_new = 0, y_new = 0;
1127         GList *link_mapping;
1128
1129         if (!EV_IS_DOCUMENT_LINKS (view->document))
1130                 return NULL;
1131
1132         x += view->scroll_x;
1133         y += view->scroll_y;
1134
1135         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1136
1137         if (page == -1)
1138                 return NULL;
1139
1140
1141         if (get_doc_point_from_offset (view, page, x_offset,
1142                                        y_offset, &x_new, &y_new) == FALSE)
1143                 return NULL;
1144
1145         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1146
1147         if (link_mapping)
1148                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1149         else
1150                 return NULL;
1151 }
1152
1153 static void
1154 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1155 {
1156         EvPoint doc_point;
1157         gdouble zoom, left, top;
1158         gboolean change_left, change_top;
1159
1160         left = ev_link_dest_get_left (dest, &change_left);
1161         top = ev_link_dest_get_top (dest, &change_top);
1162
1163         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left,
1164                                        ev_link_dest_get_bottom (dest) - top,
1165                                        ev_view_get_width (view),
1166                                        ev_view_get_height (view), 0, 0);
1167
1168         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1169         ev_view_set_zoom (view, zoom, FALSE);
1170
1171         doc_point.x = change_left ? left : 0;
1172         doc_point.y = change_top ? top : 0;
1173
1174         view->current_page = ev_link_dest_get_page (dest);
1175         if (change_left || change_top)
1176                 view->pending_point = doc_point;
1177         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1178
1179         gtk_widget_queue_resize (GTK_WIDGET (view));
1180 }
1181
1182 static void
1183 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1184 {
1185         EvPoint doc_point;
1186         int doc_width, doc_height, page;
1187         double zoom, left;
1188         gboolean change_left;
1189
1190         page = ev_link_dest_get_page (dest);
1191         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1192
1193         left = ev_link_dest_get_left (dest, &change_left);
1194         doc_point.x = change_left ? left : 0;
1195         doc_point.y = 0;
1196
1197         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1198                                          ev_view_get_width (view),
1199                                          ev_view_get_height (view), 0);
1200
1201         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1202         ev_view_set_zoom (view, zoom, FALSE);
1203
1204         view->current_page = page;
1205         if (change_left)
1206                 view->pending_point = doc_point;
1207         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1208
1209         gtk_widget_queue_resize (GTK_WIDGET (view));
1210 }
1211
1212 static void
1213 goto_fith_dest (EvView *view, EvLinkDest *dest)
1214 {
1215         EvPoint doc_point;
1216         int doc_width, doc_height, page;
1217         gdouble zoom, top;
1218         gboolean change_top;
1219
1220         page = ev_link_dest_get_page (dest);
1221         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1222
1223         top = ev_link_dest_get_top (dest, &change_top);
1224
1225         doc_point.x = 0;
1226         doc_point.y = change_top ? top : 0;
1227
1228         zoom = zoom_for_size_fit_width (doc_width, top,
1229                                         ev_view_get_width (view),
1230                                         ev_view_get_height (view), 0);
1231
1232         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1233         ev_view_set_zoom (view, zoom, FALSE);
1234
1235         view->current_page = page;
1236         if (change_top)
1237                 view->pending_point = doc_point;
1238         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1239
1240         gtk_widget_queue_resize (GTK_WIDGET (view));
1241 }
1242
1243 static void
1244 goto_fit_dest (EvView *view, EvLinkDest *dest)
1245 {
1246         double zoom;
1247         int doc_width, doc_height;
1248         int page;
1249
1250         page = ev_link_dest_get_page (dest);
1251         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1252
1253         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1254                                        ev_view_get_height (view), 0, 0);
1255
1256         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1257         ev_view_set_zoom (view, zoom, FALSE);
1258
1259         view->current_page = page;
1260         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1261
1262         gtk_widget_queue_resize (GTK_WIDGET (view));
1263 }
1264
1265 static void
1266 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1267 {
1268         EvPoint doc_point;
1269         gint page;
1270         gdouble zoom, left, top;
1271         gboolean change_zoom, change_left, change_top;
1272
1273         zoom = ev_link_dest_get_zoom (dest, &change_zoom);
1274         page = ev_link_dest_get_page (dest);
1275
1276         if (change_zoom && zoom > 1) {
1277                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1278                 ev_view_set_zoom (view, zoom, FALSE);
1279         }
1280
1281         left = ev_link_dest_get_left (dest, &change_left);
1282         top = ev_link_dest_get_top (dest, &change_top);
1283
1284         doc_point.x = change_left ? left : 0;
1285         doc_point.y = change_top ? top : 0;
1286
1287         view->current_page = page;
1288         if (change_left || change_top)
1289                 view->pending_point = doc_point;
1290         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1291
1292         gtk_widget_queue_resize (GTK_WIDGET (view));
1293 }
1294
1295 static void
1296 goto_dest (EvView *view, EvLinkDest *dest)
1297 {
1298         EvLinkDestType type;
1299         int page, n_pages, current_page;
1300
1301         page = ev_link_dest_get_page (dest);
1302         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1303
1304         if (page < 0 || page >= n_pages)
1305                 return;
1306
1307         current_page = view->current_page;
1308
1309         type = ev_link_dest_get_dest_type (dest);
1310
1311         switch (type) {
1312                 case EV_LINK_DEST_TYPE_PAGE:
1313                         ev_page_cache_set_current_page (view->page_cache, page);
1314                         break;
1315                 case EV_LINK_DEST_TYPE_FIT:
1316                         goto_fit_dest (view, dest);
1317                         break;
1318                 case EV_LINK_DEST_TYPE_FITH:
1319                         goto_fith_dest (view, dest);
1320                         break;
1321                 case EV_LINK_DEST_TYPE_FITV:
1322                         goto_fitv_dest (view, dest);
1323                         break;
1324                 case EV_LINK_DEST_TYPE_FITR:
1325                         goto_fitr_dest (view, dest);
1326                         break;
1327                 case EV_LINK_DEST_TYPE_XYZ:
1328                         goto_xyz_dest (view, dest);
1329                         break;
1330                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1331                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1332                         break;
1333                 default:
1334                         g_assert_not_reached ();
1335         }
1336
1337         if (current_page != view->current_page)
1338                 ev_page_cache_set_current_page (view->page_cache,
1339                                                 view->current_page);
1340 }
1341
1342 static void
1343 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1344 {
1345         EvLinkDestType type;
1346
1347         type = ev_link_dest_get_dest_type (dest);
1348
1349         if (type == EV_LINK_DEST_TYPE_NAMED) {
1350                 EvLinkDest  *dest2;
1351                 const gchar *named_dest;
1352
1353                 named_dest = ev_link_dest_get_named_dest (dest);
1354                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1355                                                           named_dest);
1356                 if (dest2) {
1357                         goto_dest (view, dest2);
1358                         g_object_unref (dest2);
1359                 }
1360
1361                 return;
1362         }
1363
1364         goto_dest (view, dest);
1365 }
1366
1367 void
1368 ev_view_handle_link (EvView *view, EvLink *link)
1369 {
1370         EvLinkAction    *action = NULL;
1371         EvLinkActionType type;
1372
1373         action = ev_link_get_action (link);
1374         if (!action)
1375                 return;
1376
1377         type = ev_link_action_get_action_type (action);
1378
1379         switch (type) {
1380                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1381                         EvLinkDest *dest;
1382
1383                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1384
1385                         dest = ev_link_action_get_dest (action);
1386                         ev_view_goto_dest (view, dest);
1387                 }
1388                         break;
1389                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1390                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1391                 case EV_LINK_ACTION_TYPE_LAUNCH:
1392                 case EV_LINK_ACTION_TYPE_NAMED:
1393                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1394                         break;
1395         }
1396 }
1397
1398 gchar *
1399 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1400 {
1401         EvLinkDestType type;
1402         gchar *msg = NULL;
1403
1404         type = ev_link_dest_get_dest_type (dest);
1405
1406         switch (type) {
1407                 case EV_LINK_DEST_TYPE_NAMED: {
1408                         EvLinkDest  *dest2;
1409                         const gchar *named_dest;
1410
1411                         named_dest = ev_link_dest_get_named_dest (dest);
1412                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1413                                                                   named_dest);
1414                         if (dest2) {
1415                                 msg = ev_page_cache_get_page_label (view->page_cache,
1416                                                                     ev_link_dest_get_page (dest2));
1417                                 g_object_unref (dest2);
1418                         }
1419                 }
1420
1421                         break;
1422                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1423                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1424                 }
1425                         break;
1426                 default:
1427                         msg = ev_page_cache_get_page_label (view->page_cache,
1428                                                             ev_link_dest_get_page (dest));
1429         }
1430
1431         return msg;
1432 }
1433
1434 static char *
1435 tip_from_action_named (EvLinkAction *action)
1436 {
1437         const gchar *name = ev_link_action_get_name (action);
1438
1439         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1440                 return g_strdup (_("Go to first page"));
1441         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1442                 return g_strdup (_("Go to previous page"));
1443         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1444                 return g_strdup (_("Go to next page"));
1445         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1446                 return g_strdup (_("Go to last page"));
1447         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1448                 return g_strdup (_("Go to page"));
1449         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1450                 return g_strdup (_("Find"));
1451         }
1452
1453         return NULL;
1454 }
1455
1456 static char *
1457 tip_from_link (EvView *view, EvLink *link)
1458 {
1459         EvLinkAction *action;
1460         EvLinkActionType type;
1461         char *msg = NULL;
1462         char *page_label;
1463         const char *title;
1464
1465         action = ev_link_get_action (link);
1466         title = ev_link_get_title (link);
1467
1468         if (!action)
1469                 return title ? g_strdup (title) : NULL;
1470
1471         type = ev_link_action_get_action_type (action);
1472
1473         switch (type) {
1474                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1475                         page_label = ev_view_page_label_from_dest (view,
1476                                                                    ev_link_action_get_dest (action));
1477                         if (page_label) {
1478                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1479                                 g_free (page_label);
1480                         }
1481                         break;
1482                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1483                         if (title) {
1484                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1485                                                        ev_link_action_get_filename (action));
1486                         } else {
1487                                 msg = g_strdup_printf (_("Go to file “%s”"),
1488                                                        ev_link_action_get_filename (action));
1489                         }
1490                         break;
1491                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1492                         msg = g_strdup (ev_link_action_get_uri (action));
1493                         break;
1494                 case EV_LINK_ACTION_TYPE_LAUNCH:
1495                         msg = g_strdup_printf (_("Launch %s"),
1496                                                ev_link_action_get_filename (action));
1497                         break;
1498                 case EV_LINK_ACTION_TYPE_NAMED:
1499                         msg = tip_from_action_named (action);
1500                         break;
1501                 default:
1502                         if (title)
1503                                 msg = g_strdup (title);
1504                         break;
1505         }
1506
1507         return msg;
1508 }
1509
1510 static void
1511 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1512 {
1513         EvLink      *link;
1514         EvFormField *field;
1515
1516         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1517                 return;
1518
1519         if (view->drag_info.in_drag) {
1520                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1521                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1522                 return;
1523         }
1524
1525         link = ev_view_get_link_at_location (view, x, y);
1526
1527 #if !GTK_CHECK_VERSION (2, 11, 7)
1528         if (view->link_tooltip == NULL) {
1529                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1530         }
1531
1532         if (view->hovered_link != link) {
1533                 view->hovered_link = link;
1534                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1535         }
1536 #endif
1537
1538         if (link) {
1539 #if GTK_CHECK_VERSION (2, 11, 7)
1540                 g_object_set (view, "has-tooltip", TRUE, NULL);
1541 #else
1542                 char *msg = tip_from_link (view, link);
1543
1544                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1545                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1546
1547                         ev_tooltip_set_position (tooltip, x, y);
1548                         ev_tooltip_set_text (tooltip, msg);
1549                         ev_tooltip_activate (tooltip);
1550                 }
1551                 g_free (msg);
1552 #endif
1553                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1554         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1555                 if (field->is_read_only) {
1556                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1557                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1558                             view->cursor == EV_VIEW_CURSOR_DRAG)
1559                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1560                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1561                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1562                 } else {
1563                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1564                 }
1565         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1566                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1567         } else {
1568                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1569                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1570                     view->cursor == EV_VIEW_CURSOR_DRAG)
1571                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1572         }
1573 }
1574
1575 /*** Images ***/
1576 static EvImage *
1577 ev_view_get_image_at_location (EvView  *view,
1578                                gdouble  x,
1579                                gdouble  y)
1580 {
1581         gint page = -1;
1582         gint x_offset = 0, y_offset = 0;
1583         gint x_new = 0, y_new = 0;
1584         GList *image_mapping;
1585
1586         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1587                 return NULL;
1588
1589         x += view->scroll_x;
1590         y += view->scroll_y;
1591
1592         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1593
1594         if (page == -1)
1595                 return NULL;
1596
1597         if (get_doc_point_from_offset (view, page, x_offset,
1598                                        y_offset, &x_new, &y_new) == FALSE)
1599                 return NULL;
1600
1601         image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page);
1602
1603         if (image_mapping)
1604                 return ev_image_mapping_find (image_mapping, x_new, y_new);
1605         else
1606                 return NULL;
1607 }
1608
1609 /*** Forms ***/
1610 static EvFormField *
1611 ev_view_get_form_field_at_location (EvView  *view,
1612                                     gdouble  x,
1613                                     gdouble  y)
1614 {
1615         gint page = -1;
1616         gint x_offset = 0, y_offset = 0;
1617         gint x_new = 0, y_new = 0;
1618         GList *forms_mapping;
1619
1620         if (!EV_IS_DOCUMENT_FORMS (view->document))
1621                 return NULL;
1622
1623         x += view->scroll_x;
1624         y += view->scroll_y;
1625
1626         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1627
1628         if (page == -1)
1629                 return NULL;
1630
1631         if (get_doc_point_from_offset (view, page, x_offset,
1632                                        y_offset, &x_new, &y_new) == FALSE)
1633                 return NULL;
1634
1635         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page);
1636
1637         if (forms_mapping)
1638                 return ev_form_field_mapping_find (forms_mapping, x_new, y_new);
1639         else
1640                 return NULL;
1641 }
1642
1643 static GdkRegion *
1644 ev_view_form_field_get_region (EvView      *view,
1645                                EvFormField *field)
1646 {
1647         EvRectangle  field_area;
1648         GdkRectangle view_area;
1649         GList       *forms_mapping;
1650
1651         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1652                                                                 field->page);
1653         ev_form_field_mapping_get_area (forms_mapping, field, &field_area);
1654         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
1655         view_area.x -= view->scroll_x;
1656         view_area.y -= view->scroll_y;
1657
1658         return gdk_region_rectangle (&view_area);
1659 }
1660
1661 static gboolean
1662 ev_view_forms_remove_widgets (EvView *view)
1663 {
1664         ev_view_remove_all (view);
1665
1666         return FALSE;
1667 }
1668
1669 static void
1670 ev_view_form_field_destroy (GtkWidget *widget,
1671                             EvView    *view)
1672 {
1673         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1674 }
1675
1676 static GtkWidget *
1677 ev_view_form_field_button_create_widget (EvView      *view,
1678                                          EvFormField *field)
1679 {
1680         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1681         GdkRegion         *field_region = NULL;
1682
1683         switch (field_button->type) {
1684                 case EV_FORM_FIELD_BUTTON_PUSH:
1685                         return NULL;
1686                 case EV_FORM_FIELD_BUTTON_CHECK:
1687                 case EV_FORM_FIELD_BUTTON_RADIO: {
1688                         gboolean  state;
1689                         GList    *forms_mapping, *l;
1690
1691                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1692                                                                                field);
1693
1694                         /* FIXME: it actually depends on NoToggleToOff flags */
1695                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1696                             state && field_button->state)
1697                                 return NULL;
1698
1699                         field_region = ev_view_form_field_get_region (view, field);
1700
1701                         /* For radio buttons and checkbox buttons that are in a set
1702                          * we need to update also the region for the current selected item
1703                          */
1704                         forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
1705                                                                                 field->page);
1706                         for (l = forms_mapping; l; l = g_list_next (l)) {
1707                                 EvFormField *button = ((EvFormFieldMapping *)(l->data))->field;
1708                                 GdkRegion   *button_region;
1709
1710                                 if (button->id == field->id)
1711                                         continue;
1712
1713                                 /* FIXME: only buttons in the same group should be updated */
1714                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1715                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1716                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1717                                         continue;
1718
1719                                 button_region = ev_view_form_field_get_region (view, button);
1720                                 gdk_region_union (field_region, button_region);
1721                                 gdk_region_destroy (button_region);
1722                         }
1723
1724                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
1725                                                                        field, !state);
1726                         field_button->state = !state;
1727                 }
1728                         break;
1729         }
1730
1731         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1732                                      field_region,
1733                                      field->page,
1734                                      view->rotation,
1735                                      view->scale);
1736         gdk_region_destroy (field_region);
1737
1738         return NULL;
1739 }
1740
1741 static void
1742 ev_view_form_field_text_save (EvView    *view,
1743                               GtkWidget *widget)
1744 {
1745         EvFormField *field;
1746
1747         if (!view->document)
1748                 return;
1749
1750         field = g_object_get_data (G_OBJECT (widget), "form-field");
1751
1752         if (field->changed) {
1753                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1754                 GdkRegion       *field_region;
1755
1756                 field_region = ev_view_form_field_get_region (view, field);
1757
1758                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
1759                                                             field, field_text->text);
1760                 field->changed = FALSE;
1761                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1762                                              field_region,
1763                                              field->page,
1764                                              view->rotation,
1765                                              view->scale);
1766                 gdk_region_destroy (field_region);
1767         }
1768 }
1769
1770 static void
1771 ev_view_form_field_text_changed (GtkWidget   *widget,
1772                                  EvFormField *field)
1773 {
1774         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1775         gchar           *text = NULL;
1776
1777         if (GTK_IS_ENTRY (widget)) {
1778                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
1779         } else if (GTK_IS_TEXT_BUFFER (widget)) {
1780                 GtkTextIter start, end;
1781
1782                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
1783                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
1784                                                  &start, &end, FALSE);
1785         }
1786
1787         if (!field_text->text ||
1788             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
1789                 g_free (field_text->text);
1790                 field_text->text = text;
1791                 field->changed = TRUE;
1792         }
1793 }
1794
1795 static GtkWidget *
1796 ev_view_form_field_text_create_widget (EvView      *view,
1797                                        EvFormField *field)
1798 {
1799         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
1800         GtkWidget       *text = NULL;
1801         gchar           *txt;
1802
1803         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
1804                                                           field);
1805
1806         switch (field_text->type) {
1807                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
1808                         /* TODO */
1809                 case EV_FORM_FIELD_TEXT_NORMAL:
1810                         text = gtk_entry_new ();
1811                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
1812                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
1813                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
1814
1815                         if (txt) {
1816                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
1817                                 g_free (txt);
1818                         }
1819
1820                         g_signal_connect (G_OBJECT (text), "changed",
1821                                           G_CALLBACK (ev_view_form_field_text_changed),
1822                                           field);
1823                         g_signal_connect_after (G_OBJECT (text), "activate",
1824                                                 G_CALLBACK (ev_view_form_field_destroy),
1825                                                 view);
1826                         break;
1827                 case EV_FORM_FIELD_TEXT_MULTILINE: {
1828                         GtkTextBuffer *buffer;
1829
1830                         text = gtk_text_view_new ();
1831                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
1832
1833                         if (txt) {
1834                                 gtk_text_buffer_set_text (buffer, txt, -1);
1835                                 g_free (txt);
1836                         }
1837
1838                         g_signal_connect (G_OBJECT (buffer), "changed",
1839                                           G_CALLBACK (ev_view_form_field_text_changed),
1840                                           field);
1841                 }
1842                         break;
1843         }
1844
1845         g_object_weak_ref (G_OBJECT (text),
1846                            (GWeakNotify)ev_view_form_field_text_save,
1847                            view);
1848
1849         return text;
1850 }
1851
1852 static void
1853 ev_view_form_field_choice_save (EvView    *view,
1854                                 GtkWidget *widget)
1855 {
1856         EvFormField *field;
1857
1858         if (!view->document)
1859                 return;
1860
1861         field = g_object_get_data (G_OBJECT (widget), "form-field");
1862
1863         if (field->changed) {
1864                 GList             *l;
1865                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1866                 GdkRegion         *field_region;
1867
1868                 field_region = ev_view_form_field_get_region (view, field);
1869
1870                 if (field_choice->is_editable) {
1871                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
1872                                                                       field, field_choice->text);
1873                 } else {
1874                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
1875                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
1876                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
1877                                                                                  field,
1878                                                                                  GPOINTER_TO_INT (l->data));
1879                         }
1880                 }
1881                 field->changed = FALSE;
1882                 ev_pixbuf_cache_reload_page (view->pixbuf_cache,
1883                                              field_region,
1884                                              field->page,
1885                                              view->rotation,
1886                                              view->scale);
1887                 gdk_region_destroy (field_region);
1888         }
1889 }
1890
1891 static void
1892 ev_view_form_field_choice_changed (GtkWidget   *widget,
1893                                    EvFormField *field)
1894 {
1895         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1896
1897         if (GTK_IS_COMBO_BOX (widget)) {
1898                 gint item;
1899
1900                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
1901                 if (GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
1902                         g_list_free (field_choice->selected_items);
1903                         field_choice->selected_items = NULL;
1904                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1905                                                                        GINT_TO_POINTER (item));
1906                         field->changed = TRUE;
1907                 }
1908
1909                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
1910                         gchar *text;
1911
1912                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
1913                         if (!field_choice->text ||
1914                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
1915                                 g_free (field_choice->text);
1916                                 field_choice->text = text;
1917                                 field->changed = TRUE;
1918                         }
1919                 }
1920         } else if (GTK_IS_TREE_SELECTION (widget)) {
1921                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
1922                 GtkTreeModel     *model;
1923                 GList            *items, *l;
1924
1925                 items = gtk_tree_selection_get_selected_rows (selection, &model);
1926                 g_list_free (field_choice->selected_items);
1927                 field_choice->selected_items = NULL;
1928
1929                 for (l = items; l && l->data; l = g_list_next (l)) {
1930                         GtkTreeIter  iter;
1931                         GtkTreePath *path = (GtkTreePath *)l->data;
1932                         gint         item;
1933
1934                         gtk_tree_model_get_iter (model, &iter, path);
1935                         gtk_tree_model_get (model, &iter, 1, &item, -1);
1936
1937                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1938                                                                        GINT_TO_POINTER (item));
1939
1940                         gtk_tree_path_free (path);
1941                 }
1942
1943                 g_list_free (items);
1944
1945                 field->changed = TRUE;
1946         }
1947 }
1948
1949 static GtkWidget *
1950 ev_view_form_field_choice_create_widget (EvView      *view,
1951                                          EvFormField *field)
1952 {
1953         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
1954         GtkWidget         *choice;
1955         GtkTreeModel      *model;
1956         gint               n_items, i;
1957         gint               selected_item = 0;
1958
1959         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
1960                                                                    field);
1961         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
1962         for (i = 0; i < n_items; i++) {
1963                 GtkTreeIter iter;
1964                 gchar      *item;
1965
1966                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
1967                                                                      field, i);
1968                 if (ev_document_forms_form_field_choice_is_item_selected (
1969                             EV_DOCUMENT_FORMS (view->document), field, i)) {
1970                         selected_item = i;
1971                         /* FIXME: we need a get_selected_items function in poppler */
1972                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
1973                                                                        GINT_TO_POINTER (i));
1974                 }
1975
1976                 if (item) {
1977                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
1978                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
1979                                             0, item,
1980                                             1, i,
1981                                             -1);
1982                         g_free (item);
1983                 }
1984         }
1985
1986         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
1987                 GtkCellRenderer  *renderer;
1988                 GtkWidget        *tree_view;
1989                 GtkTreeSelection *selection;
1990
1991                 tree_view = gtk_tree_view_new_with_model (model);
1992                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
1993
1994                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
1995                 if (field_choice->multi_select) {
1996                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
1997                 }
1998
1999                 /* TODO: set selected items */
2000
2001                 renderer = gtk_cell_renderer_text_new ();
2002                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
2003                                                              0,
2004                                                              "choix", renderer,
2005                                                              "text", 0,
2006                                                              NULL);
2007
2008                 choice = gtk_scrolled_window_new (NULL, NULL);
2009                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
2010                                                 GTK_POLICY_AUTOMATIC,
2011                                                 GTK_POLICY_AUTOMATIC);
2012                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
2013                 gtk_widget_show (tree_view);
2014
2015                 g_signal_connect (G_OBJECT (selection), "changed",
2016                                   G_CALLBACK (ev_view_form_field_choice_changed),
2017                                   field);
2018                 g_signal_connect_after (G_OBJECT (selection), "changed",
2019                                         G_CALLBACK (ev_view_form_field_destroy),
2020                                         view);
2021         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2022                 gchar *text;
2023
2024                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2025                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2026                 if (text) {
2027                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2028                         g_free (text);
2029                 }
2030
2031                 g_signal_connect (G_OBJECT (choice), "changed",
2032                                   G_CALLBACK (ev_view_form_field_choice_changed),
2033                                   field);
2034                 g_signal_connect_after (G_OBJECT (GTK_BIN (choice)->child), "activate",
2035                                         G_CALLBACK (ev_view_form_field_destroy),
2036                                         view);
2037         } else { /* ComboBoxText */
2038                 GtkCellRenderer *renderer;
2039
2040                 choice = gtk_combo_box_new_with_model (model);
2041                 renderer = gtk_cell_renderer_text_new ();
2042                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2043                                             renderer, TRUE);
2044                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2045                                                 renderer,
2046                                                 "text", 0,
2047                                                 NULL);
2048                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2049                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2050
2051                 g_signal_connect (G_OBJECT (choice), "changed",
2052                                   G_CALLBACK (ev_view_form_field_choice_changed),
2053                                   field);
2054                 g_signal_connect_after (G_OBJECT (choice), "changed",
2055                                         G_CALLBACK (ev_view_form_field_destroy),
2056                                         view);
2057         }
2058
2059         g_object_unref (model);
2060
2061         g_object_weak_ref (G_OBJECT (choice),
2062                            (GWeakNotify)ev_view_form_field_choice_save,
2063                            view);
2064
2065         return choice;
2066 }
2067
2068 static void
2069 ev_view_handle_form_field (EvView      *view,
2070                            EvFormField *field,
2071                            gdouble      x,
2072                            gdouble      y)
2073 {
2074         GtkWidget   *field_widget = NULL;
2075         GList       *form_field_mapping;
2076         EvRectangle  field_area;
2077         GdkRectangle view_area;
2078
2079         if (field->is_read_only)
2080                 return;
2081
2082         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2083                 field_widget = ev_view_form_field_button_create_widget (view, field);
2084         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2085                 field_widget = ev_view_form_field_text_create_widget (view, field);
2086         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2087                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2088         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2089                 /* TODO */
2090         }
2091
2092         /* Form field doesn't require a widget */
2093         if (!field_widget)
2094                 return;
2095
2096         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2097                                 g_object_ref (field),
2098                                 (GDestroyNotify)g_object_unref);
2099
2100         form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page);
2101         ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2102
2103         doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2104         view_area.x -= view->scroll_x;
2105         view_area.y -= view->scroll_y;
2106
2107         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2108         gtk_widget_show (field_widget);
2109         gtk_widget_grab_focus (field_widget);
2110 }
2111
2112 /*** GtkWidget implementation ***/
2113
2114 static void
2115 ev_view_size_request_continuous_dual_page (EvView         *view,
2116                                            GtkRequisition *requisition)
2117 {
2118         int max_width;
2119         gint n_pages;
2120         GtkBorder border;
2121
2122         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2123                                      view->scale, &max_width);
2124         compute_border (view, max_width, max_width, &border);
2125
2126         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
2127
2128         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2129         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2130
2131         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2132                 requisition->width = 1;
2133         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2134                 requisition->width = 1;
2135                 /* FIXME: This could actually be set on one page docs or docs
2136                  * with a strange aspect ratio. */
2137                 /* requisition->height = 1;*/
2138         }
2139 }
2140
2141 static void
2142 ev_view_size_request_continuous (EvView         *view,
2143                                  GtkRequisition *requisition)
2144 {
2145         int max_width;
2146         int n_pages;
2147         GtkBorder border;
2148
2149
2150         ev_page_cache_get_max_width (view->page_cache, view->rotation,
2151                                      view->scale, &max_width);
2152         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2153         compute_border (view, max_width, max_width, &border);
2154
2155         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2156         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
2157
2158         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2159                 requisition->width = 1;
2160         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2161                 requisition->width = 1;
2162                 /* FIXME: This could actually be set on one page docs or docs
2163                  * with a strange aspect ratio. */
2164                 /* requisition->height = 1;*/
2165         }
2166 }
2167
2168 static void
2169 ev_view_size_request_dual_page (EvView         *view,
2170                                 GtkRequisition *requisition)
2171 {
2172         GtkBorder border;
2173         gint width, height;
2174
2175         /* Find the largest of the two. */
2176         ev_page_cache_get_size (view->page_cache,
2177                                 view->current_page,
2178                                 view->rotation,
2179                                 view->scale,
2180                                 &width, &height);
2181         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
2182                 gint width_2, height_2;
2183                 ev_page_cache_get_size (view->page_cache,
2184                                         view->current_page + 1,
2185                                         view->rotation,
2186                                         view->scale,
2187                                         &width_2, &height_2);
2188                 if (width_2 > width) {
2189                         width = width_2;
2190                         height = height_2;
2191                 }
2192         }
2193         compute_border (view, width, height, &border);
2194
2195         requisition->width = ((width + border.left + border.right) * 2) +
2196                 (view->spacing * 3);
2197         requisition->height = (height + border.top + border.bottom) +
2198                 (view->spacing * 2);
2199
2200         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2201                 requisition->width = 1;
2202         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2203                 requisition->width = 1;
2204                 requisition->height = 1;
2205         }
2206 }
2207
2208 static void
2209 ev_view_size_request_single_page (EvView         *view,
2210                                   GtkRequisition *requisition)
2211 {
2212         GtkBorder border;
2213         gint width, height;
2214
2215         ev_page_cache_get_size (view->page_cache,
2216                                 view->current_page,
2217                                 view->rotation,
2218                                 view->scale,
2219                                 &width, &height);
2220         compute_border (view, width, height, &border);
2221
2222         requisition->width = width + border.left + border.right + (2 * view->spacing);
2223         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2224
2225         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
2226                 requisition->width = 1;
2227                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2228         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2229                 requisition->width = 1;
2230                 requisition->height = 1;
2231         }
2232 }
2233
2234 static void
2235 ev_view_size_request (GtkWidget      *widget,
2236                       GtkRequisition *requisition)
2237 {
2238         EvView *view = EV_VIEW (widget);
2239
2240         if (view->document == NULL) {
2241                 requisition->width = 1;
2242                 requisition->height = 1;
2243                 return;
2244         }
2245
2246         if (view->presentation) {
2247                 requisition->width = 1;
2248                 requisition->height = 1;
2249                 return;
2250         }
2251
2252         if (view->continuous && view->dual_page)
2253                 ev_view_size_request_continuous_dual_page (view, requisition);
2254         else if (view->continuous)
2255                 ev_view_size_request_continuous (view, requisition);
2256         else if (view->dual_page)
2257                 ev_view_size_request_dual_page (view, requisition);
2258         else
2259                 ev_view_size_request_single_page (view, requisition);
2260 }
2261
2262 static void
2263 ev_view_size_allocate (GtkWidget      *widget,
2264                        GtkAllocation  *allocation)
2265 {
2266         EvView *view = EV_VIEW (widget);
2267         GList  *children, *l;
2268
2269         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2270
2271         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2272             view->sizing_mode == EV_SIZING_BEST_FIT) {
2273
2274                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
2275
2276                 ev_view_size_request (widget, &widget->requisition);
2277         }
2278
2279         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2280         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2281
2282         if (view->document)
2283                 view_update_range_and_current_page (view);
2284
2285         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2286         view->pending_resize = FALSE;
2287
2288         children = gtk_container_get_children (GTK_CONTAINER (widget));
2289         for (l = children; l && l->data; l = g_list_next (l)) {
2290                 EvFormField   *field;
2291                 EvRectangle    field_area;
2292                 GdkRectangle   view_area;
2293                 GList         *form_field_mapping;
2294                 GtkAllocation  child_allocation;
2295                 GtkRequisition child_requisition;
2296                 GtkWidget     *child = (GtkWidget *)l->data;
2297
2298                 field = g_object_get_data (G_OBJECT (child), "form-field");
2299                 if (!field)
2300                         continue;
2301
2302                 form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache,
2303                                                                              field->page);
2304                 ev_form_field_mapping_get_area (form_field_mapping, field, &field_area);
2305
2306                 doc_rect_to_view_rect (view, field->page, &field_area, &view_area);
2307                 view_area.x -= view->scroll_x;
2308                 view_area.y -= view->scroll_y;
2309
2310                 gtk_widget_size_request (child, &child_requisition);
2311                 if (child_requisition.width != view_area.width ||
2312                     child_requisition.height != view_area.height)
2313                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2314
2315                 gtk_container_child_get (GTK_CONTAINER (widget),
2316                                          child,
2317                                          "x", &child_allocation.x,
2318                                          "y", &child_allocation.y,
2319                                          NULL);
2320                 if (child_allocation.x != view_area.x ||
2321                     child_allocation.y != view_area.y) {
2322                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2323                 }
2324         }
2325         g_list_free (children);
2326 }
2327
2328 static void
2329 ev_view_realize (GtkWidget *widget)
2330 {
2331         EvView *view = EV_VIEW (widget);
2332
2333         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
2334                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
2335
2336         gdk_window_set_events (view->layout.bin_window,
2337                                (gdk_window_get_events (view->layout.bin_window) |
2338                                 GDK_EXPOSURE_MASK |
2339                                 GDK_BUTTON_PRESS_MASK |
2340                                 GDK_BUTTON_RELEASE_MASK |
2341                                 GDK_SCROLL_MASK |
2342                                 GDK_KEY_PRESS_MASK |
2343                                 GDK_POINTER_MOTION_MASK |
2344                                 GDK_POINTER_MOTION_HINT_MASK |
2345                                 GDK_ENTER_NOTIFY_MASK |
2346                                 GDK_LEAVE_NOTIFY_MASK));
2347
2348         if (view->presentation)
2349                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
2350         else
2351                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
2352 }
2353
2354 static gboolean
2355 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
2356 {
2357         EvView *view = EV_VIEW (widget);
2358         guint state;
2359
2360         state = event->state & gtk_accelerator_get_default_mod_mask ();
2361
2362         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
2363                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
2364
2365                 if (event->direction == GDK_SCROLL_UP ||
2366                     event->direction == GDK_SCROLL_LEFT) {
2367                         if (ev_view_can_zoom_in (view)) {
2368                                 ev_view_zoom_in (view);
2369                         }
2370                 } else {
2371                         if (ev_view_can_zoom_out (view)) {
2372                                 ev_view_zoom_out (view);
2373                         }
2374                 }
2375
2376                 return TRUE;
2377         }
2378
2379         view->jump_to_find_result = FALSE;
2380         /* Shift+Wheel scrolls the in the perpendicular direction */
2381         if (state & GDK_SHIFT_MASK) {
2382                 if (event->direction == GDK_SCROLL_UP)
2383                         event->direction = GDK_SCROLL_LEFT;
2384                 if (event->direction == GDK_SCROLL_LEFT)
2385                         event->direction = GDK_SCROLL_UP;
2386                 if (event->direction == GDK_SCROLL_DOWN)
2387                         event->direction = GDK_SCROLL_RIGHT;
2388                 if (event->direction == GDK_SCROLL_RIGHT)
2389                         event->direction = GDK_SCROLL_DOWN;
2390
2391                 event->state &= ~GDK_SHIFT_MASK;
2392                 state &= ~GDK_SHIFT_MASK;
2393         }
2394
2395         if (state == 0 && view->presentation) {
2396                 switch (event->direction) {
2397                         case GDK_SCROLL_DOWN:
2398                         case GDK_SCROLL_RIGHT:
2399                                 ev_view_next_page (view);
2400                                 break;
2401                         case GDK_SCROLL_UP:
2402                         case GDK_SCROLL_LEFT:
2403                                 ev_view_previous_page (view);
2404                                 break;
2405                 }
2406
2407                 return TRUE;
2408         }
2409
2410         return FALSE;
2411 }
2412
2413 static EvViewSelection *
2414 find_selection_for_page (EvView *view,
2415                          gint    page)
2416 {
2417         GList *list;
2418
2419         for (list = view->selection_info.selections; list != NULL; list = list->next) {
2420                 EvViewSelection *selection;
2421
2422                 selection = (EvViewSelection *) list->data;
2423
2424                 if (selection->page == page)
2425                         return selection;
2426         }
2427
2428         return NULL;
2429 }
2430
2431 static void
2432 draw_end_presentation_page (EvView       *view,
2433                             GdkRectangle *page_area)
2434 {
2435         PangoLayout *layout;
2436         PangoFontDescription *font_desc;
2437         gchar *markup;
2438         const gchar *text = _("End of presentation. Press Escape to exit.");
2439
2440         if (view->presentation_state != EV_PRESENTATION_END)
2441                 return;
2442
2443         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
2444         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
2445         pango_layout_set_markup (layout, markup, -1);
2446         g_free (markup);
2447
2448         font_desc = pango_font_description_new ();
2449         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
2450         pango_layout_set_font_description (layout, font_desc);
2451
2452         gtk_paint_layout (GTK_WIDGET (view)->style,
2453                           view->layout.bin_window,
2454                           GTK_WIDGET_STATE (view),
2455                           FALSE,
2456                           page_area,
2457                           GTK_WIDGET (view),
2458                           NULL,
2459                           page_area->x + 15,
2460                           page_area->y + 15,
2461                           layout);
2462
2463         pango_font_description_free (font_desc);
2464         g_object_unref (layout);
2465 }
2466
2467 static gboolean
2468 ev_view_expose_event (GtkWidget      *widget,
2469                       GdkEventExpose *event)
2470 {
2471         EvView  *view = EV_VIEW (widget);
2472         cairo_t *cr;
2473         gint     i;
2474
2475         if (view->presentation) {
2476                 switch (view->presentation_state) {
2477                         case EV_PRESENTATION_END: {
2478                                 GdkRectangle area = {0};
2479
2480                                 area.width = widget->allocation.width;
2481                                 area.height = widget->allocation.height;
2482
2483                                 draw_end_presentation_page (view, &area);
2484                         }
2485                                 return FALSE;
2486                         case EV_PRESENTATION_BLACK:
2487                         case EV_PRESENTATION_WHITE:
2488                                 return FALSE;
2489                         case EV_PRESENTATION_NORMAL:
2490                         default:
2491                                 break;
2492                 }
2493         } else if (view->loading) {
2494                 GdkRectangle area = {0};
2495
2496                 area.width = widget->allocation.width;
2497                 area.height = widget->allocation.height;
2498
2499                 draw_loading_text (view,
2500                                    &area,
2501                                    &(event->area));
2502         }
2503
2504         if (view->document == NULL)
2505                 return FALSE;
2506
2507         cr = gdk_cairo_create (view->layout.bin_window);
2508
2509         for (i = view->start_page; i <= view->end_page; i++) {
2510                 GdkRectangle page_area;
2511                 GtkBorder border;
2512                 gboolean page_ready = TRUE;
2513
2514                 if (!get_page_extents (view, i, &page_area, &border))
2515                         continue;
2516
2517                 page_area.x -= view->scroll_x;
2518                 page_area.y -= view->scroll_y;
2519
2520                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
2521
2522                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document) && view->highlight_find_results)
2523                         highlight_find_results (view, i);
2524         }
2525
2526         cairo_destroy (cr);
2527
2528         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
2529                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
2530
2531         return FALSE;
2532 }
2533
2534 static gboolean
2535 ev_view_do_popup_menu (EvView *view,
2536                        gdouble x,
2537                        gdouble y)
2538 {
2539         EvLink  *link;
2540         EvImage *image;
2541
2542         image = ev_view_get_image_at_location (view, x, y);
2543         if (image) {
2544                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
2545                 return TRUE;
2546         }
2547
2548         link = ev_view_get_link_at_location (view, x, y);
2549         if (link) {
2550                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
2551                 return TRUE;
2552         }
2553
2554         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
2555
2556         return TRUE;
2557 }
2558
2559 static gboolean
2560 ev_view_popup_menu (GtkWidget *widget)
2561 {
2562         gint x, y;
2563
2564         gtk_widget_get_pointer (widget, &x, &y);
2565         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
2566 }
2567
2568 #if GTK_CHECK_VERSION (2, 11, 7)
2569 static void
2570 get_link_area (EvView       *view,
2571                gint          x,
2572                gint          y,
2573                EvLink       *link,
2574                GdkRectangle *area)
2575 {
2576         EvRectangle  ev_rect;
2577         GList       *link_mapping;
2578         gint         page;
2579         gint         x_offset = 0, y_offset = 0;
2580
2581         x += view->scroll_x;
2582         y += view->scroll_y;
2583
2584         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
2585
2586         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
2587         ev_link_mapping_get_area (link_mapping, link, &ev_rect);
2588
2589         doc_rect_to_view_rect (view, page, &ev_rect, area);
2590         area->y -= view->scroll_y ;
2591 }
2592
2593 static gboolean
2594 ev_view_query_tooltip (GtkWidget         *widget,
2595                        gint               x,
2596                        gint               y,
2597                        gboolean           keyboard_tip,
2598                        GtkTooltip        *tooltip)
2599 {
2600         EvView *view = EV_VIEW (widget);
2601         EvLink *link;
2602         gchar  *text;
2603
2604         link = ev_view_get_link_at_location (view, x, y);
2605         if (!link)
2606                 return FALSE;
2607
2608         text = tip_from_link (view, link);
2609         if (text && g_utf8_validate (text, -1, NULL)) {
2610                 GdkRectangle link_area;
2611
2612                 get_link_area (view, x, y, link, &link_area);
2613                 gtk_tooltip_set_text (tooltip, text);
2614                 gtk_tooltip_set_tip_area (tooltip, &link_area);
2615         }
2616         g_free (text);
2617
2618         return TRUE;
2619 }
2620 #endif /* GTK_CHECK_VERSION (2, 11, 7) */
2621
2622 static void
2623 start_selection_for_event (EvView         *view,
2624                            GdkEventButton *event)
2625 {
2626         EvSelectionStyle style;
2627
2628         clear_selection (view);
2629
2630         view->selection_info.start.x = event->x + view->scroll_x;
2631         view->selection_info.start.y = event->y + view->scroll_y;
2632
2633         switch (event->type) {
2634                 case GDK_2BUTTON_PRESS:
2635                         style = EV_SELECTION_STYLE_WORD;
2636                         break;
2637                 case GDK_3BUTTON_PRESS:
2638                         style = EV_SELECTION_STYLE_LINE;
2639                         break;
2640                 default:
2641                         style = EV_SELECTION_STYLE_GLYPH;
2642                         break;
2643         }
2644
2645         view->selection_info.style = style;
2646 }
2647
2648 static gboolean
2649 ev_view_button_press_event (GtkWidget      *widget,
2650                             GdkEventButton *event)
2651 {
2652         EvView *view = EV_VIEW (widget);
2653
2654         if (!view->document)
2655                 return FALSE;
2656
2657         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
2658                 gtk_widget_grab_focus (widget);
2659         }
2660
2661         view->pressed_button = event->button;
2662         view->selection_info.in_drag = FALSE;
2663
2664         switch (event->button) {
2665                 case 1: {
2666                         EvImage *image;
2667                         EvFormField *field;
2668
2669                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
2670                                 if (event->type == GDK_3BUTTON_PRESS) {
2671                                         start_selection_for_event (view, event);
2672                                 } else if (location_in_selected_text (view,
2673                                                                event->x + view->scroll_x,
2674                                                                event->y + view->scroll_y)) {
2675                                         view->selection_info.in_drag = TRUE;
2676                                 } else {
2677                                         start_selection_for_event (view, event);
2678                                 }
2679
2680                                 gtk_widget_queue_draw (widget);
2681                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
2682                                 ev_view_remove_all (view);
2683                                 ev_view_handle_form_field (view, field, event->x, event->y);
2684                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
2685                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
2686                                 if (view->image_dnd_info.image)
2687                                         g_object_unref (view->image_dnd_info.image);
2688                                 view->image_dnd_info.image = g_object_ref (image);
2689                                 view->image_dnd_info.in_drag = TRUE;
2690
2691                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
2692                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
2693                         } else {
2694                                 ev_view_remove_all (view);
2695
2696                                 if (EV_IS_SELECTION (view->document))
2697                                         start_selection_for_event (view, event);
2698                         }
2699                 }
2700                         return TRUE;
2701                 case 2:
2702                         /* use root coordinates as reference point because
2703                          * scrolling changes window relative coordinates */
2704                         view->drag_info.start.x = event->x_root;
2705                         view->drag_info.start.y = event->y_root;
2706                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
2707                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
2708
2709                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
2710
2711                         return TRUE;
2712                 case 3:
2713                         return ev_view_do_popup_menu (view, event->x, event->y);
2714         }
2715
2716         return FALSE;
2717 }
2718
2719 static void
2720 ev_view_remove_all (EvView *view)
2721 {
2722         GList *children, *child;
2723
2724         children = gtk_container_get_children (GTK_CONTAINER (view));
2725         for (child = children; child && child->data; child = g_list_next (child)) {
2726                 gtk_container_remove (GTK_CONTAINER (view),
2727                                       GTK_WIDGET (child->data));
2728         }
2729         g_list_free (children);
2730 }
2731
2732 /*** Drag and Drop ***/
2733 static void
2734 ev_view_drag_data_get (GtkWidget        *widget,
2735                        GdkDragContext   *context,
2736                        GtkSelectionData *selection_data,
2737                        guint             info,
2738                        guint             time)
2739 {
2740         EvView *view = EV_VIEW (widget);
2741
2742         switch (info) {
2743                 case TARGET_DND_TEXT:
2744                         if (EV_IS_SELECTION (view->document) &&
2745                             view->selection_info.selections) {
2746                                 gchar *text;
2747
2748                                 text = get_selected_text (view);
2749                                 gtk_selection_data_set_text (selection_data,
2750                                                              text,
2751                                                              strlen (text));
2752                                 g_free (text);
2753                         }
2754                         break;
2755                 case TARGET_DND_IMAGE:
2756                         if (view->image_dnd_info.image) {
2757                                 GdkPixbuf *pixbuf;
2758
2759                                 pixbuf = ev_image_get_pixbuf (view->image_dnd_info.image);
2760                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
2761                         }
2762                         break;
2763                 case TARGET_DND_URI:
2764                         if (view->image_dnd_info.image) {
2765                                 const gchar *tmp_uri;
2766                                 gchar      **uris;
2767
2768                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image);
2769
2770                                 uris = g_new0 (gchar *, 2);
2771                                 uris[0] = (gchar *)tmp_uri;
2772
2773                                 gtk_selection_data_set_uris (selection_data, uris);
2774
2775                                 /* g_free instead of g_strfreev since tmp_uri is const */
2776                                 g_free (uris);
2777                         }
2778         }
2779 }
2780
2781 static gboolean
2782 ev_view_drag_motion (GtkWidget      *widget,
2783                      GdkDragContext *context,
2784                      gint            x,
2785                      gint            y,
2786                      guint           time)
2787 {
2788         if (gtk_drag_get_source_widget (context) == widget)
2789                 gdk_drag_status (context, 0, time);
2790         else
2791                 gdk_drag_status (context, context->suggested_action, time);
2792
2793         return TRUE;
2794 }
2795
2796 static void
2797 ev_view_drag_data_received (GtkWidget          *widget,
2798                             GdkDragContext     *context,
2799                             gint                x,
2800                             gint                y,
2801                             GtkSelectionData   *selection_data,
2802                             guint               info,
2803                             guint               time)
2804 {
2805         gchar  **uris;
2806         gint     i = 0;
2807         GSList  *uri_list = NULL;
2808
2809         uris = gtk_selection_data_get_uris (selection_data);
2810         if (!uris) {
2811                 gtk_drag_finish (context, FALSE, FALSE, time);
2812                 return;
2813         }
2814
2815         for (i = 0; uris[i]; i++) {
2816                 uri_list = g_slist_prepend (uri_list, (gpointer) uris[i]);
2817         }
2818
2819         ev_application_open_uri_list (EV_APP, uri_list,
2820                                       gtk_widget_get_screen (widget),
2821                                       0);
2822         gtk_drag_finish (context, TRUE, FALSE, time);
2823
2824         g_strfreev (uris);
2825         g_slist_free (uri_list);
2826 }
2827
2828
2829 static gboolean
2830 selection_update_idle_cb (EvView *view)
2831 {
2832         compute_selections (view,
2833                             view->selection_info.style,
2834                             &view->selection_info.start,
2835                             &view->motion);
2836         view->selection_update_id = 0;
2837         return FALSE;
2838 }
2839
2840 static gboolean
2841 selection_scroll_timeout_cb (EvView *view)
2842 {
2843         gint x, y, shift = 0;
2844         GtkWidget *widget = GTK_WIDGET (view);
2845
2846         gtk_widget_get_pointer (widget, &x, &y);
2847
2848         if (y > widget->allocation.height) {
2849                 shift = (y - widget->allocation.height) / 2;
2850         } else if (y < 0) {
2851                 shift = y / 2;
2852         }
2853
2854         if (shift)
2855                 gtk_adjustment_set_value (view->vadjustment,
2856                                           CLAMP (view->vadjustment->value + shift,
2857                                           view->vadjustment->lower,
2858                                           view->vadjustment->upper -
2859                                           view->vadjustment->page_size));
2860
2861         if (x > widget->allocation.width) {
2862                 shift = (x - widget->allocation.width) / 2;
2863         } else if (x < 0) {
2864                 shift = x / 2;
2865         }
2866
2867         if (shift)
2868                 gtk_adjustment_set_value (view->hadjustment,
2869                                           CLAMP (view->hadjustment->value + shift,
2870                                           view->hadjustment->lower,
2871                                           view->hadjustment->upper -
2872                                           view->hadjustment->page_size));
2873
2874         return TRUE;
2875 }
2876
2877 static gboolean
2878 ev_view_motion_notify_event (GtkWidget      *widget,
2879                              GdkEventMotion *event)
2880 {
2881         EvView *view = EV_VIEW (widget);
2882         gint x, y;
2883
2884         if (!view->document)
2885                 return FALSE;
2886
2887         if (event->is_hint || event->window != view->layout.bin_window) {
2888             gtk_widget_get_pointer (widget, &x, &y);
2889         } else {
2890             x = event->x;
2891             y = event->y;
2892         }
2893
2894         if (view->selection_info.in_drag) {
2895                 if (gtk_drag_check_threshold (widget,
2896                                               view->selection_info.start.x,
2897                                               view->selection_info.start.y,
2898                                               x, y)) {
2899                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2900
2901                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
2902
2903                         gtk_drag_begin (widget, target_list,
2904                                         GDK_ACTION_COPY,
2905                                         1, (GdkEvent *)event);
2906
2907                         view->selection_info.in_drag = FALSE;
2908
2909                         gtk_target_list_unref (target_list);
2910
2911                         return TRUE;
2912                 }
2913         } else if (view->image_dnd_info.in_drag) {
2914                 if (gtk_drag_check_threshold (widget,
2915                                               view->selection_info.start.x,
2916                                               view->selection_info.start.y,
2917                                               x, y)) {
2918                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2919
2920                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
2921                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
2922
2923                         gtk_drag_begin (widget, target_list,
2924                                         GDK_ACTION_COPY,
2925                                         1, (GdkEvent *)event);
2926
2927                         view->image_dnd_info.in_drag = FALSE;
2928
2929                         gtk_target_list_unref (target_list);
2930
2931                         return TRUE;
2932                 }
2933         }
2934
2935         /* For the Evince 0.4.x release, we limit selection to un-rotated
2936          * documents only.
2937          */
2938         if (view->pressed_button == 1 && view->rotation == 0) {
2939
2940                 /* Schedule timeout to scroll during selection and additionally
2941                  * scroll once to allow arbitrary speed. */
2942                 if (!view->selection_scroll_id)
2943                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2944                 else
2945                     selection_scroll_timeout_cb (view);
2946
2947                 view->selection_info.in_selection = TRUE;
2948                 view->motion.x = x + view->scroll_x;
2949                 view->motion.y = y + view->scroll_y;
2950
2951                 /* Queue an idle to handle the motion.  We do this because
2952                  * handling any selection events in the motion could be slower
2953                  * than new motion events reach us.  We always put it in the
2954                  * idle to make sure we catch up and don't visibly lag the
2955                  * mouse. */
2956                 if (!view->selection_update_id)
2957                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2958
2959                 return TRUE;
2960         } else if (view->pressed_button == 2) {
2961                 if (!view->drag_info.in_drag) {
2962                         gboolean start;
2963
2964                         start = gtk_drag_check_threshold (widget,
2965                                                           view->drag_info.start.x,
2966                                                           view->drag_info.start.y,
2967                                                           event->x_root,
2968                                                           event->y_root);
2969                         view->drag_info.in_drag = start;
2970                 }
2971
2972                 if (view->drag_info.in_drag) {
2973                         int dx, dy;
2974                         gdouble dhadj_value, dvadj_value;
2975
2976                         dx = event->x_root - view->drag_info.start.x;
2977                         dy = event->y_root - view->drag_info.start.y;
2978
2979                         dhadj_value = view->hadjustment->page_size *
2980                                       (gdouble)dx / widget->allocation.width;
2981                         dvadj_value = view->vadjustment->page_size *
2982                                       (gdouble)dy / widget->allocation.height;
2983
2984                         /* clamp scrolling to visible area */
2985                         gtk_adjustment_set_value (view->hadjustment,
2986                                                   MIN(view->drag_info.hadj - dhadj_value,
2987                                                       view->hadjustment->upper -
2988                                                       view->hadjustment->page_size));
2989                         gtk_adjustment_set_value (view->vadjustment,
2990                                                   MIN(view->drag_info.vadj - dvadj_value,
2991                                                       view->vadjustment->upper -
2992                                                       view->vadjustment->page_size));
2993
2994                         return TRUE;
2995                 }
2996         } else if (view->pressed_button <= 0) {
2997                 ev_view_handle_cursor_over_xy (view, x, y);
2998                 return TRUE;
2999         }
3000
3001         return FALSE;
3002 }
3003
3004 static gboolean
3005 ev_view_button_release_event (GtkWidget      *widget,
3006                               GdkEventButton *event)
3007 {
3008         EvView *view = EV_VIEW (widget);
3009         EvLink *link = NULL;
3010
3011         view->drag_info.in_drag = FALSE;
3012         view->image_dnd_info.in_drag = FALSE;
3013
3014         if (view->pressed_button == 2) {
3015                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3016         }
3017
3018         if (view->document && view->pressed_button != 3) {
3019                 link = ev_view_get_link_at_location (view, event->x, event->y);
3020         }
3021
3022         view->pressed_button = -1;
3023
3024         if (view->selection_scroll_id) {
3025             g_source_remove (view->selection_scroll_id);
3026             view->selection_scroll_id = 0;
3027         }
3028         if (view->selection_update_id) {
3029             g_source_remove (view->selection_update_id);
3030             view->selection_update_id = 0;
3031         }
3032
3033         if (!view->selection_info.in_selection &&
3034             view->selection_info.style != EV_SELECTION_STYLE_GLYPH) {
3035                 compute_selections (view,
3036                                     view->selection_info.style,
3037                                     &(view->selection_info.start),
3038                                     &(view->selection_info.start));
3039         }
3040
3041         if (view->selection_info.selections) {
3042                 ev_view_update_primary_selection (view);
3043
3044                 if (view->selection_info.in_drag) {
3045                         clear_selection (view);
3046                         gtk_widget_queue_draw (widget);
3047                 }
3048
3049                 view->selection_info.in_drag = FALSE;
3050         } else if (link) {
3051                 if (event->button == 2) {
3052                         EvLinkAction    *action;
3053                         EvLinkActionType type;
3054
3055                         action = ev_link_get_action (link);
3056                         if (!action)
3057                                 return FALSE;
3058
3059                         type = ev_link_action_get_action_type (action);
3060                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3061                                 g_signal_emit (view,
3062                                                signals[SIGNAL_EXTERNAL_LINK],
3063                                                0, action);
3064                         }
3065                 } else {
3066                         ev_view_handle_link (view, link);
3067                 }
3068         } else if (view->presentation) {
3069                 switch (event->button) {
3070                         case 1:
3071                                 ev_view_next_page (view);
3072                                 return TRUE;
3073                         case 3:
3074                                 ev_view_previous_page (view);
3075                                 return TRUE;
3076                 }
3077         }
3078
3079         return FALSE;
3080 }
3081
3082 /* Goto Window */
3083 /* Cut and paste from gtkwindow.c */
3084 static void
3085 send_focus_change (GtkWidget *widget,
3086                    gboolean   in)
3087 {
3088         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3089
3090         g_object_ref (widget);
3091
3092         if (in)
3093                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3094         else
3095                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3096
3097         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3098         fevent->focus_change.window = g_object_ref (widget->window);
3099         fevent->focus_change.in = in;
3100
3101         gtk_widget_event (widget, fevent);
3102
3103         g_object_notify (G_OBJECT (widget), "has-focus");
3104
3105         g_object_unref (widget);
3106         gdk_event_free (fevent);
3107 }
3108
3109 static void
3110 ev_view_goto_window_hide (EvView *view)
3111 {
3112         /* send focus-in event */
3113         send_focus_change (view->goto_entry, FALSE);
3114         gtk_widget_hide (view->goto_window);
3115         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3116 }
3117
3118 static gboolean
3119 ev_view_goto_window_delete_event (GtkWidget   *widget,
3120                                   GdkEventAny *event,
3121                                   EvView      *view)
3122 {
3123         ev_view_goto_window_hide (view);
3124
3125         return TRUE;
3126 }
3127
3128 static gboolean
3129 key_is_numeric (guint keyval)
3130 {
3131         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3132                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3133 }
3134
3135 static gboolean
3136 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3137                                      GdkEventKey *event,
3138                                      EvView      *view)
3139 {
3140         switch (event->keyval) {
3141                 case GDK_Escape:
3142                 case GDK_Tab:
3143                 case GDK_KP_Tab:
3144                 case GDK_ISO_Left_Tab:
3145                         ev_view_goto_window_hide (view);
3146                         return TRUE;
3147                 case GDK_Return:
3148                 case GDK_KP_Enter:
3149                 case GDK_ISO_Enter:
3150                 case GDK_BackSpace:
3151                 case GDK_Delete:
3152                         return FALSE;
3153                 default:
3154                         if (!key_is_numeric (event->keyval))
3155                                 return TRUE;
3156         }
3157
3158         return FALSE;
3159 }
3160
3161 static gboolean
3162 ev_view_goto_window_button_press_event (GtkWidget      *widget,
3163                                         GdkEventButton *event,
3164                                         EvView         *view)
3165 {
3166         ev_view_goto_window_hide (view);
3167
3168         return TRUE;
3169 }
3170
3171 static void
3172 ev_view_goto_entry_activate (GtkEntry *entry,
3173                              EvView   *view)
3174 {
3175         const gchar *text;
3176         gint         page;
3177
3178         text = gtk_entry_get_text (entry);
3179         page = atoi (text) - 1;
3180
3181         ev_view_goto_window_hide (view);
3182
3183         if (page >= 0 &&
3184             page < ev_page_cache_get_n_pages (view->page_cache))
3185                 ev_page_cache_set_current_page (view->page_cache, page);
3186 }
3187
3188 static void
3189 ev_view_goto_window_create (EvView *view)
3190 {
3191         GtkWidget *frame, *hbox, *toplevel, *label;
3192
3193         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
3194
3195         if (view->goto_window) {
3196                 if (GTK_WINDOW (toplevel)->group)
3197                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3198                                                      GTK_WINDOW (view->goto_window));
3199                 else if (GTK_WINDOW (view->goto_window)->group)
3200                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
3201                                                         GTK_WINDOW (view->goto_window));
3202                 return;
3203         }
3204
3205         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
3206
3207         if (GTK_WINDOW (toplevel)->group)
3208                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
3209                                              GTK_WINDOW (view->goto_window));
3210
3211         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
3212
3213         g_signal_connect (view->goto_window, "delete_event",
3214                           G_CALLBACK (ev_view_goto_window_delete_event),
3215                           view);
3216         g_signal_connect (view->goto_window, "key_press_event",
3217                           G_CALLBACK (ev_view_goto_window_key_press_event),
3218                           view);
3219         g_signal_connect (view->goto_window, "button_press_event",
3220                           G_CALLBACK (ev_view_goto_window_button_press_event),
3221                           view);
3222
3223         frame = gtk_frame_new (NULL);
3224         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
3225         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
3226         gtk_widget_show (frame);
3227
3228         hbox = gtk_hbox_new (FALSE, 0);
3229         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
3230         gtk_container_add (GTK_CONTAINER (frame), hbox);
3231         gtk_widget_show (hbox);
3232
3233         label = gtk_label_new(_("Jump to page:"));
3234         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
3235         gtk_widget_show (label);
3236         gtk_widget_realize (label);
3237
3238         view->goto_entry = gtk_entry_new ();
3239         g_signal_connect (view->goto_entry, "activate",
3240                           G_CALLBACK (ev_view_goto_entry_activate),
3241                           view);
3242         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
3243         gtk_widget_show (view->goto_entry);
3244         gtk_widget_realize (view->goto_entry);
3245 }
3246
3247 static void
3248 ev_view_goto_entry_grab_focus (EvView *view)
3249 {
3250         GtkWidgetClass *entry_parent_class;
3251
3252         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
3253         (entry_parent_class->grab_focus) (view->goto_entry);
3254
3255         send_focus_change (view->goto_entry, TRUE);
3256 }
3257
3258 static void
3259 ev_view_goto_window_send_key_event (EvView   *view,
3260                                     GdkEvent *event)
3261 {
3262         GdkEventKey *new_event;
3263         GdkScreen   *screen;
3264
3265         /* Move goto window off screen */
3266         screen = gtk_widget_get_screen (GTK_WIDGET (view));
3267         gtk_window_move (GTK_WINDOW (view->goto_window),
3268                          gdk_screen_get_width (screen) + 1,
3269                          gdk_screen_get_height (screen) + 1);
3270         gtk_widget_show (view->goto_window);
3271
3272         new_event = (GdkEventKey *) gdk_event_copy (event);
3273         g_object_unref (new_event->window);
3274         new_event->window = g_object_ref (view->goto_window->window);
3275         gtk_widget_realize (view->goto_window);
3276
3277         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
3278         gdk_event_free ((GdkEvent *)new_event);
3279         gtk_widget_hide (view->goto_window);
3280 }
3281
3282 static gboolean
3283 ev_view_key_press_event (GtkWidget   *widget,
3284                          GdkEventKey *event)
3285 {
3286         EvView *view = EV_VIEW (widget);
3287         EvPresentationState current;
3288
3289         if (!view->document)
3290                 return FALSE;
3291
3292         if (!view->presentation ||
3293             view->presentation_state == EV_PRESENTATION_END)
3294                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3295
3296
3297         current = view->presentation_state;
3298
3299         switch (event->keyval) {
3300                 case GDK_b:
3301                 case GDK_B:
3302                         view->presentation_state =
3303                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
3304                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
3305                         break;
3306                 case GDK_w:
3307                 case GDK_W:
3308                         view->presentation_state =
3309                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
3310                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
3311                         break;
3312                 default:
3313                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
3314                             view->presentation_state == EV_PRESENTATION_WHITE) {
3315                                 view->presentation_state = EV_PRESENTATION_NORMAL;
3316                         }
3317         }
3318
3319         if (current == view->presentation_state) {
3320                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
3321                     key_is_numeric (event->keyval)) {
3322                         gint x, y;
3323
3324                         ev_view_goto_window_create (view);
3325                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
3326                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
3327                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
3328                         gtk_widget_show (view->goto_window);
3329                         ev_view_goto_entry_grab_focus (view);
3330
3331                         return TRUE;
3332                 }
3333
3334                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3335         }
3336
3337         switch (view->presentation_state) {
3338                 case EV_PRESENTATION_NORMAL:
3339                 case EV_PRESENTATION_BLACK:
3340                         gdk_window_set_background (view->layout.bin_window,
3341                                                    &widget->style->black);
3342                         break;
3343                 case EV_PRESENTATION_WHITE:
3344                         gdk_window_set_background (view->layout.bin_window,
3345                                                    &widget->style->white);
3346                         break;
3347                 default:
3348                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3349         }
3350
3351         gtk_widget_queue_draw (widget);
3352         return TRUE;
3353 }
3354
3355 static gint
3356 ev_view_focus_in (GtkWidget     *widget,
3357                   GdkEventFocus *event)
3358 {
3359         if (EV_VIEW (widget)->pixbuf_cache)
3360                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3361         gtk_widget_queue_draw (widget);
3362
3363         return FALSE;
3364 }
3365
3366 static gint
3367 ev_view_focus_out (GtkWidget     *widget,
3368                      GdkEventFocus *event)
3369 {
3370         if (EV_VIEW (widget)->goto_window)
3371                 ev_view_goto_window_hide (EV_VIEW (widget));
3372
3373         if (EV_VIEW (widget)->pixbuf_cache)
3374                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3375         gtk_widget_queue_draw (widget);
3376
3377         return FALSE;
3378 }
3379
3380 static gboolean
3381 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3382 {
3383         EvView *view = EV_VIEW (widget);
3384
3385         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3386                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3387
3388 #if !GTK_CHECK_VERSION (2, 11, 7)
3389         if (view->link_tooltip) {
3390                 view->hovered_link = NULL;
3391                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
3392         }
3393 #endif
3394
3395         return FALSE;
3396 }
3397
3398 static gboolean
3399 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3400 {
3401         EvView *view = EV_VIEW (widget);
3402
3403         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3404
3405         return FALSE;
3406 }
3407
3408 static void
3409 ev_view_style_set (GtkWidget *widget,
3410                    GtkStyle  *old_style)
3411 {
3412         if (EV_VIEW (widget)->pixbuf_cache)
3413                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3414
3415         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3416 }
3417
3418 /*** Drawing ***/
3419
3420 static guint32
3421 ev_gdk_color_to_rgb (const GdkColor *color)
3422 {
3423   guint32 result;
3424   result = (0xff0000 | (color->red & 0xff00));
3425   result <<= 8;
3426   result |= ((color->green & 0xff00) | (color->blue >> 8));
3427   return result;
3428 }
3429
3430 static void
3431 draw_rubberband (GtkWidget *widget, GdkWindow *window,
3432                  const GdkRectangle *rect, guchar alpha)
3433 {
3434         GdkGC *gc;
3435         GdkPixbuf *pixbuf;
3436         GdkColor *fill_color_gdk;
3437         guint fill_color;
3438
3439         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
3440         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
3441
3442         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
3443                                  rect->width, rect->height);
3444         gdk_pixbuf_fill (pixbuf, fill_color);
3445
3446         gdk_draw_pixbuf (window, NULL, pixbuf,
3447                          0, 0,
3448                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3449                          rect->width, rect->height,
3450                          GDK_RGB_DITHER_NONE,
3451                          0, 0);
3452
3453         g_object_unref (pixbuf);
3454
3455         gc = gdk_gc_new (window);
3456         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
3457         gdk_draw_rectangle (window, gc, FALSE,
3458                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
3459                             rect->width - 1,
3460                             rect->height - 1);
3461         g_object_unref (gc);
3462
3463         gdk_color_free (fill_color_gdk);
3464 }
3465
3466
3467 static void
3468 highlight_find_results (EvView *view, int page)
3469 {
3470         EvDocumentFind *find;
3471         int i, results = 0;
3472
3473         find = EV_DOCUMENT_FIND (view->document);
3474
3475         results = ev_document_find_get_n_results (find, page);
3476
3477         for (i = 0; i < results; i++) {
3478                 EvRectangle rectangle;
3479                 GdkRectangle view_rectangle;
3480                 guchar alpha;
3481
3482                 if (i == view->find_result && page == view->current_page) {
3483                         alpha = 0x90;
3484                 } else {
3485                         alpha = 0x20;
3486                 }
3487
3488                 ev_document_find_get_result (find, page, i, &rectangle);
3489                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
3490                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
3491                                  &view_rectangle, alpha);
3492         }
3493 }
3494
3495 static void
3496 draw_loading_text (EvView       *view,
3497                    GdkRectangle *page_area,
3498                    GdkRectangle *expose_area)
3499 {
3500         cairo_t *cr;
3501         gint     width, height;
3502
3503         /* Don't annoy users with loading messages during presentations.
3504          * FIXME: Temporary "workaround" for
3505          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
3506         if (view->presentation)
3507                 return;
3508
3509         if (!view->loading_text) {
3510                 const gchar *loading_text = _("Loading...");
3511                 PangoLayout *layout;
3512                 PangoFontDescription *font_desc;
3513                 PangoRectangle logical_rect;
3514                 gint target_width;
3515                 gdouble real_scale;
3516
3517                 ev_document_fc_mutex_lock ();
3518
3519                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
3520
3521                 font_desc = pango_font_description_new ();
3522
3523                 /* We set the font to be 10 points, get the size, and scale appropriately */
3524                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
3525                 pango_layout_set_font_description (layout, font_desc);
3526                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3527
3528                 target_width = MAX (page_area->width / 2, 1);
3529                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
3530                 pango_font_description_set_size (font_desc, (int)real_scale);
3531                 pango_layout_set_font_description (layout, font_desc);
3532                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
3533
3534                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3535                                                                  logical_rect.width,
3536                                                                  logical_rect.height);
3537                 cr = cairo_create (view->loading_text);
3538                 cairo_set_source_rgb (cr,
3539                                       155 / (double)255,
3540                                       155 / (double)255,
3541                                       155 / (double)255);
3542                 pango_cairo_show_layout (cr, layout);
3543                 cairo_destroy (cr);
3544
3545                 pango_font_description_free (font_desc);
3546                 g_object_unref (layout);
3547
3548                 ev_document_fc_mutex_unlock ();
3549         }
3550
3551         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
3552         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
3553
3554         cr = gdk_cairo_create (view->layout.bin_window);
3555         cairo_translate (cr,
3556                          page_area->x + width,
3557                          page_area->y + height);
3558         cairo_set_source_surface (cr, view->loading_text, 0, 0);
3559         cairo_paint (cr);
3560         cairo_destroy (cr);
3561 }
3562
3563 static void
3564 draw_one_page (EvView       *view,
3565                gint          page,
3566                cairo_t      *cr,
3567                GdkRectangle *page_area,
3568                GtkBorder    *border,
3569                GdkRectangle *expose_area,
3570                gboolean     *page_ready)
3571 {
3572         GdkRectangle overlap;
3573         GdkRectangle real_page_area;
3574
3575         g_assert (view->document);
3576
3577         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
3578                 return;
3579
3580         /* Render the document itself */
3581         real_page_area = *page_area;
3582
3583         real_page_area.x += border->left;
3584         real_page_area.y += border->top;
3585         real_page_area.width -= (border->left + border->right);
3586         real_page_area.height -= (border->top + border->bottom);
3587         *page_ready = TRUE;
3588
3589         if (!view->presentation) {
3590                 gint current_page;
3591
3592                 current_page = ev_page_cache_get_current_page (view->page_cache);
3593                 ev_document_misc_paint_one_page (view->layout.bin_window,
3594                                                  GTK_WIDGET (view),
3595                                                  page_area, border,
3596                                                  page == current_page);
3597         }
3598
3599         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
3600                 gint             width, height;
3601                 gint             page_width, page_height;
3602                 cairo_surface_t *page_surface = NULL;
3603                 gint             selection_width, selection_height;
3604                 cairo_surface_t *selection_surface = NULL;
3605
3606                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
3607
3608                 if (!page_surface) {
3609                         draw_loading_text (view,
3610                                            &real_page_area,
3611                                            expose_area);
3612                         *page_ready = FALSE;
3613
3614                         return;
3615                 }
3616
3617                 ev_page_cache_get_size (view->page_cache,
3618                                         page, view->rotation,
3619                                         view->scale,
3620                                         &width, &height);
3621
3622                 page_width = cairo_image_surface_get_width (page_surface);
3623                 page_height = cairo_image_surface_get_height (page_surface);
3624
3625                 cairo_save (cr);
3626                 cairo_translate (cr, overlap.x, overlap.y);
3627
3628                 if (width != page_width || height != page_height) {
3629                         cairo_pattern_set_filter (cairo_get_source (cr),
3630                                                   CAIRO_FILTER_FAST);
3631                         cairo_scale (cr,
3632                                      (gdouble)width / page_width,
3633                                      (gdouble)height / page_height);
3634                 }
3635
3636                 cairo_surface_set_device_offset (page_surface,
3637                                                  overlap.x - real_page_area.x,
3638                                                  overlap.y - real_page_area.y);
3639                 cairo_set_source_surface (cr, page_surface, 0, 0);
3640                 cairo_paint (cr);
3641                 cairo_restore (cr);
3642
3643                 /* Get the selection pixbuf iff we have something to draw */
3644                 if (find_selection_for_page (view, page) &&
3645                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
3646                         selection_surface =
3647                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
3648                                                                        page,
3649                                                                        view->scale,
3650                                                                        NULL);
3651                 }
3652
3653                 if (!selection_surface) {
3654                         return;
3655                 }
3656
3657                 selection_width = cairo_image_surface_get_width (selection_surface);
3658                 selection_height = cairo_image_surface_get_height (selection_surface);
3659
3660                 cairo_save (cr);
3661                 cairo_translate (cr, overlap.x, overlap.y);
3662
3663                 if (width != selection_width || height != selection_height) {
3664                         cairo_pattern_set_filter (cairo_get_source (cr),
3665                                                   CAIRO_FILTER_FAST);
3666                         cairo_scale (cr,
3667                                      (gdouble)width / selection_width,
3668                                      (gdouble)height / selection_height);
3669                 }
3670
3671                 cairo_surface_set_device_offset (selection_surface,
3672                                                  overlap.x - real_page_area.x,
3673                                                  overlap.y - real_page_area.y);
3674                 cairo_set_source_surface (cr, selection_surface, 0, 0);
3675                 cairo_paint (cr);
3676                 cairo_restore (cr);
3677         }
3678 }
3679
3680 /*** GObject functions ***/
3681
3682 static void
3683 ev_view_finalize (GObject *object)
3684 {
3685         EvView *view = EV_VIEW (object);
3686
3687         g_free (view->find_status);
3688
3689         clear_selection (view);
3690
3691         if (view->image_dnd_info.image)
3692                 g_object_unref (view->image_dnd_info.image);
3693         view->image_dnd_info.image = NULL;
3694
3695         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
3696 }
3697
3698 static void
3699 ev_view_destroy (GtkObject *object)
3700 {
3701         EvView *view = EV_VIEW (object);
3702
3703         if (view->document) {
3704                 g_object_unref (view->document);
3705                 view->document = NULL;
3706         }
3707
3708         if (view->pixbuf_cache) {
3709                 g_object_unref (view->pixbuf_cache);
3710                 view->pixbuf_cache = NULL;
3711         }
3712
3713 #if !GTK_CHECK_VERSION (2, 11, 7)
3714         if (view->link_tooltip) {
3715                 gtk_widget_destroy (view->link_tooltip);
3716                 view->link_tooltip = NULL;
3717         }
3718 #endif
3719         if (view->goto_window) {
3720                 gtk_widget_destroy (view->goto_window);
3721                 view->goto_window = NULL;
3722                 view->goto_entry = NULL;
3723         }
3724
3725         if (view->selection_scroll_id) {
3726             g_source_remove (view->selection_scroll_id);
3727             view->selection_scroll_id = 0;
3728         }
3729
3730         if (view->selection_update_id) {
3731             g_source_remove (view->selection_update_id);
3732             view->selection_update_id = 0;
3733         }
3734
3735         if (view->loading_text) {
3736                 cairo_surface_destroy (view->loading_text);
3737                 view->loading_text = NULL;
3738         }
3739
3740         ev_view_presentation_transition_stop (view);
3741
3742         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
3743
3744         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
3745 }
3746
3747 static void
3748 ev_view_set_property (GObject      *object,
3749                       guint         prop_id,
3750                       const GValue *value,
3751                       GParamSpec   *pspec)
3752 {
3753         EvView *view = EV_VIEW (object);
3754
3755         switch (prop_id) {
3756                 case PROP_CONTINUOUS:
3757                         ev_view_set_continuous (view, g_value_get_boolean (value));
3758                         break;
3759                 case PROP_DUAL_PAGE:
3760                         ev_view_set_dual_page (view, g_value_get_boolean (value));
3761                         break;
3762                 case PROP_FULLSCREEN:
3763                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
3764                         break;
3765                 case PROP_PRESENTATION:
3766                         ev_view_set_presentation (view, g_value_get_boolean (value));
3767                         break;
3768                 case PROP_SIZING_MODE:
3769                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
3770                         break;
3771                 case PROP_ZOOM:
3772                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
3773                         break;
3774                 case PROP_ROTATION:
3775                         ev_view_set_rotation (view, g_value_get_int (value));
3776                         break;
3777                 default:
3778                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3779         }
3780 }
3781
3782 static AtkObject *
3783 ev_view_get_accessible (GtkWidget *widget)
3784 {
3785         static gboolean first_time = TRUE;
3786
3787         if (first_time) {
3788                 AtkObjectFactory *factory;
3789                 AtkRegistry *registry;
3790                 GType derived_type;
3791                 GType derived_atk_type;
3792
3793                 /*
3794                  * Figure out whether accessibility is enabled by looking at the
3795                  * type of the accessible object which would be created for
3796                  * the parent type of EvView.
3797                  */
3798                 derived_type = g_type_parent (EV_TYPE_VIEW);
3799
3800                 registry = atk_get_default_registry ();
3801                 factory = atk_registry_get_factory (registry,
3802                                                     derived_type);
3803                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
3804                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
3805                         atk_registry_set_factory_type (registry,
3806                                                        EV_TYPE_VIEW,
3807                                                        ev_view_accessible_factory_get_type ());
3808                 first_time = FALSE;
3809         }
3810         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
3811 }
3812
3813 static void
3814 ev_view_get_property (GObject *object,
3815                       guint prop_id,
3816                       GValue *value,
3817                       GParamSpec *pspec)
3818 {
3819         EvView *view = EV_VIEW (object);
3820
3821         switch (prop_id) {
3822                 case PROP_FIND_STATUS:
3823                         g_value_set_string (value, view->find_status);
3824                         break;
3825                 case PROP_CONTINUOUS:
3826                         g_value_set_boolean (value, view->continuous);
3827                         break;
3828                 case PROP_DUAL_PAGE:
3829                         g_value_set_boolean (value, view->dual_page);
3830                         break;
3831                 case PROP_FULLSCREEN:
3832                         g_value_set_boolean (value, view->fullscreen);
3833                         break;
3834                 case PROP_PRESENTATION:
3835                         g_value_set_boolean (value, view->presentation);
3836                         break;
3837                 case PROP_SIZING_MODE:
3838                         g_value_set_enum (value, view->sizing_mode);
3839                         break;
3840                 case PROP_ZOOM:
3841                         g_value_set_double (value, view->scale);
3842                         break;
3843                 case PROP_ROTATION:
3844                         g_value_set_int (value, view->rotation);
3845                         break;
3846                 case PROP_HAS_SELECTION:
3847                         g_value_set_boolean (value,
3848                                              view->selection_info.selections != NULL);
3849                         break;
3850                 default:
3851                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
3852         }
3853 }
3854
3855 static void
3856 ev_view_class_init (EvViewClass *class)
3857 {
3858         GObjectClass *object_class = G_OBJECT_CLASS (class);
3859         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
3860         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
3861         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
3862         GtkBindingSet *binding_set;
3863
3864         object_class->finalize = ev_view_finalize;
3865         object_class->set_property = ev_view_set_property;
3866         object_class->get_property = ev_view_get_property;
3867
3868         widget_class->expose_event = ev_view_expose_event;
3869         widget_class->button_press_event = ev_view_button_press_event;
3870         widget_class->motion_notify_event = ev_view_motion_notify_event;
3871         widget_class->button_release_event = ev_view_button_release_event;
3872         widget_class->key_press_event = ev_view_key_press_event;
3873         widget_class->focus_in_event = ev_view_focus_in;
3874         widget_class->focus_out_event = ev_view_focus_out;
3875         widget_class->get_accessible = ev_view_get_accessible;
3876         widget_class->size_request = ev_view_size_request;
3877         widget_class->size_allocate = ev_view_size_allocate;
3878         widget_class->realize = ev_view_realize;
3879         widget_class->scroll_event = ev_view_scroll_event;
3880         widget_class->enter_notify_event = ev_view_enter_notify_event;
3881         widget_class->leave_notify_event = ev_view_leave_notify_event;
3882         widget_class->style_set = ev_view_style_set;
3883         widget_class->drag_data_get = ev_view_drag_data_get;
3884         widget_class->drag_motion = ev_view_drag_motion;
3885         widget_class->drag_data_received = ev_view_drag_data_received;
3886         widget_class->popup_menu = ev_view_popup_menu;
3887 #if GTK_CHECK_VERSION (2, 11, 7)
3888         widget_class->query_tooltip = ev_view_query_tooltip;
3889 #endif
3890
3891         gtk_object_class->destroy = ev_view_destroy;
3892
3893         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
3894
3895         class->binding_activated = ev_view_scroll;
3896
3897         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
3898                          G_TYPE_FROM_CLASS (object_class),
3899                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3900                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
3901                          NULL, NULL,
3902                          ev_marshal_VOID__ENUM_BOOLEAN,
3903                          G_TYPE_NONE, 2,
3904                          GTK_TYPE_SCROLL_TYPE,
3905                          G_TYPE_BOOLEAN);
3906
3907         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
3908                          G_TYPE_FROM_CLASS (object_class),
3909                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3910                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
3911                          NULL, NULL,
3912                          ev_marshal_VOID__VOID,
3913                          G_TYPE_NONE, 0, G_TYPE_NONE);
3914         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
3915                          G_TYPE_FROM_CLASS (object_class),
3916                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3917                          G_STRUCT_OFFSET (EvViewClass, handle_link),
3918                          NULL, NULL,
3919                          g_cclosure_marshal_VOID__OBJECT,
3920                          G_TYPE_NONE, 1,
3921                          G_TYPE_OBJECT);
3922         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
3923                          G_TYPE_FROM_CLASS (object_class),
3924                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3925                          G_STRUCT_OFFSET (EvViewClass, external_link),
3926                          NULL, NULL,
3927                          g_cclosure_marshal_VOID__OBJECT,
3928                          G_TYPE_NONE, 1,
3929                          G_TYPE_OBJECT);
3930         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
3931                          G_TYPE_FROM_CLASS (object_class),
3932                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3933                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3934                          NULL, NULL,
3935                          g_cclosure_marshal_VOID__OBJECT,
3936                          G_TYPE_NONE, 1,
3937                          G_TYPE_OBJECT);
3938
3939
3940         g_object_class_install_property (object_class,
3941                                          PROP_FIND_STATUS,
3942                                          g_param_spec_string ("find-status",
3943                                                               "Find Status Message",
3944                                                               "The find status message",
3945                                                               NULL,
3946                                                               G_PARAM_READABLE));
3947
3948         g_object_class_install_property (object_class,
3949                                          PROP_CONTINUOUS,
3950                                          g_param_spec_boolean ("continuous",
3951                                                                "Continuous",
3952                                                                "Continuous scrolling mode",
3953                                                                TRUE,
3954                                                                G_PARAM_READWRITE));
3955
3956         g_object_class_install_property (object_class,
3957                                          PROP_DUAL_PAGE,
3958                                          g_param_spec_boolean ("dual-page",
3959                                                                "Dual Page",
3960                                                                "Two pages visible at once",
3961                                                                FALSE,
3962                                                                G_PARAM_READWRITE));
3963         g_object_class_install_property (object_class,
3964                                          PROP_FULLSCREEN,
3965                                          g_param_spec_boolean ("fullscreen",
3966                                                                "Full Screen",
3967                                                                "Draw page in a fullscreen fashion",
3968                                                                FALSE,
3969                                                                G_PARAM_READWRITE));
3970         g_object_class_install_property (object_class,
3971                                          PROP_PRESENTATION,
3972                                          g_param_spec_boolean ("presentation",
3973                                                                "Presentation",
3974                                                                "Draw page in presentation mode",
3975                                                                TRUE,
3976                                                                G_PARAM_READWRITE));
3977
3978         g_object_class_install_property (object_class,
3979                                          PROP_SIZING_MODE,
3980                                          g_param_spec_enum ("sizing-mode",
3981                                                             "Sizing Mode",
3982                                                             "Sizing Mode",
3983                                                             EV_TYPE_SIZING_MODE,
3984                                                             EV_SIZING_FIT_WIDTH,
3985                                                             G_PARAM_READWRITE));
3986
3987         g_object_class_install_property (object_class,
3988                                          PROP_ZOOM,
3989                                          g_param_spec_double ("zoom",
3990                                                               "Zoom factor",
3991                                                               "Zoom factor",
3992                                                               0,
3993                                                               G_MAXDOUBLE,
3994                                                               1.0,
3995                                                               G_PARAM_READWRITE));
3996         g_object_class_install_property (object_class,
3997                                          PROP_ROTATION,
3998                                          g_param_spec_double ("rotation",
3999                                                               "Rotation",
4000                                                               "Rotation",
4001                                                               0,
4002                                                               360,
4003                                                               0,
4004                                                               G_PARAM_READWRITE));
4005         g_object_class_install_property (object_class,
4006                                          PROP_HAS_SELECTION,
4007                                          g_param_spec_boolean ("has-selection",
4008                                                                "Has selection",
4009                                                                "The view has selections",
4010                                                                FALSE,
4011                                                                G_PARAM_READABLE));
4012
4013         binding_set = gtk_binding_set_by_class (class);
4014
4015         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
4016         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
4017         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
4018         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
4019         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
4020         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
4021         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
4022         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
4023         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4024                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4025         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4026                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4027         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4028                                       EV_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4029         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, EV_TYPE_SCROLL_TYPE,
4030                                       EV_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4031
4032 }
4033
4034 static void
4035 ev_view_init (EvView *view)
4036 {
4037         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4038
4039         view->spacing = 5;
4040         view->scale = 1.0;
4041         view->current_page = 0;
4042         view->pressed_button = -1;
4043         view->cursor = EV_VIEW_CURSOR_NORMAL;
4044         view->drag_info.in_drag = FALSE;
4045         view->selection_info.selections = NULL;
4046         view->selection_info.in_selection = FALSE;
4047         view->selection_info.in_drag = FALSE;
4048         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4049         view->continuous = TRUE;
4050         view->dual_page = FALSE;
4051         view->presentation = FALSE;
4052         view->presentation_state = EV_PRESENTATION_NORMAL;
4053         view->fullscreen = FALSE;
4054         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4055         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4056         view->jump_to_find_result = TRUE;
4057         view->highlight_find_results = FALSE;
4058
4059         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4060         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4061
4062         gtk_drag_dest_set (GTK_WIDGET (view),
4063                            GTK_DEST_DEFAULT_ALL,
4064                            view_drop_targets,
4065                            G_N_ELEMENTS (view_drop_targets),
4066                            GDK_ACTION_COPY);
4067 }
4068
4069 /*** Callbacks ***/
4070
4071 static void
4072 find_changed_cb (EvDocument *document, int page, EvView *view)
4073 {
4074         double percent;
4075         int n_pages;
4076
4077         percent = ev_document_find_get_progress
4078                         (EV_DOCUMENT_FIND (view->document));
4079         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4080
4081         if (view->jump_to_find_result == TRUE) {
4082                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
4083                 jump_to_find_result (view);
4084         }
4085         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
4086         if (view->current_page == page)
4087                 gtk_widget_queue_draw (GTK_WIDGET (view));
4088 }
4089
4090 static void
4091 job_finished_cb (EvPixbufCache *pixbuf_cache,
4092                  GdkRegion     *region,
4093                  EvView        *view)
4094 {
4095         if (region) {
4096                 gdk_window_invalidate_region (view->layout.bin_window,
4097                                               region, TRUE);
4098         } else {
4099                 gtk_widget_queue_draw (GTK_WIDGET (view));
4100         }
4101 }
4102
4103 static void
4104 page_changed_cb (EvPageCache *page_cache,
4105                  int          new_page,
4106                  EvView      *view)
4107 {
4108         if (view->current_page != new_page) {
4109                 gint x, y;
4110
4111                 view->current_page = new_page;
4112                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4113
4114                 if (view->presentation)
4115                         ev_view_presentation_transition_start (view);
4116
4117                 gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4118                 ev_view_handle_cursor_over_xy (view, x, y);
4119
4120                 gtk_widget_queue_resize (GTK_WIDGET (view));
4121         } else {
4122                 gtk_widget_queue_draw (GTK_WIDGET (view));
4123         }
4124
4125         if (EV_IS_DOCUMENT_FIND (view->document)) {
4126                 view->find_result = 0;
4127                 update_find_status_message (view, TRUE);
4128         }
4129 }
4130
4131 static void
4132 on_adjustment_value_changed (GtkAdjustment *adjustment,
4133                              EvView        *view)
4134 {
4135         int dx = 0, dy = 0;
4136         gint x, y;
4137         GList *children, *l;
4138
4139         if (! GTK_WIDGET_REALIZED (view))
4140                 return;
4141
4142         if (view->hadjustment) {
4143                 dx = view->scroll_x - (int) view->hadjustment->value;
4144                 view->scroll_x = (int) view->hadjustment->value;
4145         } else {
4146                 view->scroll_x = 0;
4147         }
4148
4149         if (view->vadjustment) {
4150                 dy = view->scroll_y - (int) view->vadjustment->value;
4151                 view->scroll_y = (int) view->vadjustment->value;
4152         } else {
4153                 view->scroll_y = 0;
4154         }
4155
4156         children = gtk_container_get_children (GTK_CONTAINER (view));
4157         for (l = children; l && l->data; l = g_list_next (l)) {
4158                 gint       child_x, child_y;
4159                 GtkWidget *child = (GtkWidget *)l->data;
4160
4161                 gtk_container_child_get (GTK_CONTAINER (view),
4162                                          child,
4163                                          "x", &child_x,
4164                                          "y", &child_y,
4165                                          NULL);
4166                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4167         }
4168         g_list_free (children);
4169
4170         if (view->pending_resize)
4171                 gtk_widget_queue_draw (GTK_WIDGET (view));
4172         else
4173                 gdk_window_scroll (view->layout.bin_window, dx, dy);
4174
4175         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4176         ev_view_handle_cursor_over_xy (view, x, y);
4177
4178         if (view->document)
4179                 view_update_range_and_current_page (view);
4180 }
4181
4182 GtkWidget*
4183 ev_view_new (void)
4184 {
4185         GtkWidget *view;
4186
4187         view = g_object_new (EV_TYPE_VIEW, NULL);
4188
4189         return view;
4190 }
4191
4192 static void
4193 setup_caches (EvView *view)
4194 {
4195         view->page_cache = ev_page_cache_get (view->document);
4196         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
4197         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
4198         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4199         page_changed_cb (view->page_cache,
4200                          ev_page_cache_get_current_page (view->page_cache),
4201                          view);
4202 }
4203
4204 static void
4205 clear_caches (EvView *view)
4206 {
4207         if (view->pixbuf_cache) {
4208                 g_object_unref (view->pixbuf_cache);
4209                 view->pixbuf_cache = NULL;
4210         }
4211
4212         if (view->page_cache) {
4213                 view->page_cache = NULL;
4214         }
4215 }
4216
4217 void
4218 ev_view_set_loading (EvView       *view,
4219                      gboolean      loading)
4220 {
4221         view->loading = loading;
4222         gtk_widget_queue_draw (GTK_WIDGET (view));
4223 }
4224
4225 void
4226 ev_view_set_document (EvView     *view,
4227                       EvDocument *document)
4228 {
4229         g_return_if_fail (EV_IS_VIEW (view));
4230
4231         view->loading = FALSE;
4232
4233         if (document != view->document) {
4234                 clear_caches (view);
4235
4236                 if (view->document) {
4237                         g_signal_handlers_disconnect_by_func (view->document,
4238                                                               find_changed_cb,
4239                                                               view);
4240                         g_object_unref (view->document);
4241                         view->page_cache = NULL;
4242
4243                 }
4244
4245                 view->document = document;
4246                 view->find_result = 0;
4247
4248                 if (view->document) {
4249                         g_object_ref (view->document);
4250                         if (EV_IS_DOCUMENT_FIND (view->document)) {
4251                                 g_signal_connect (view->document,
4252                                                   "find_changed",
4253                                                   G_CALLBACK (find_changed_cb),
4254                                                   view);
4255                         }
4256
4257                         setup_caches (view);
4258                 }
4259
4260                 gtk_widget_queue_resize (GTK_WIDGET (view));
4261         }
4262 }
4263
4264 /*** Zoom and sizing mode ***/
4265
4266 #define EPSILON 0.0000001
4267 void
4268 ev_view_set_zoom (EvView   *view,
4269                   double    factor,
4270                   gboolean  relative)
4271 {
4272         double scale;
4273
4274         if (relative)
4275                 scale = view->scale * factor;
4276         else
4277                 scale = factor;
4278
4279         scale = CLAMP (scale,
4280                        view->sizing_mode == EV_SIZING_FREE ? view->min_scale : 0,
4281                        view->max_scale);
4282
4283         if (ABS (view->scale - scale) < EPSILON)
4284                 return;
4285
4286         if (view->loading_text) {
4287                 cairo_surface_destroy (view->loading_text);
4288                 view->loading_text = NULL;
4289         }
4290
4291         view->scale = scale;
4292         view->pending_resize = TRUE;
4293
4294         gtk_widget_queue_resize (GTK_WIDGET (view));
4295
4296         g_object_notify (G_OBJECT (view), "zoom");
4297 }
4298
4299 double
4300 ev_view_get_zoom (EvView *view)
4301 {
4302         return view->scale;
4303 }
4304
4305 void
4306 ev_view_set_screen_dpi (EvView  *view,
4307                         gdouble  dpi)
4308 {
4309         g_return_if_fail (EV_IS_VIEW (view));
4310         g_return_if_fail (dpi > 0);
4311
4312         view->dpi = dpi;
4313         view->min_scale = MIN_SCALE * dpi / 72.0;
4314         view->max_scale = MAX_SCALE * dpi / 72.0;
4315 }
4316
4317 gboolean
4318 ev_view_get_continuous (EvView *view)
4319 {
4320         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4321
4322         return view->continuous;
4323 }
4324
4325 void
4326 ev_view_set_continuous (EvView   *view,
4327                         gboolean  continuous)
4328 {
4329         g_return_if_fail (EV_IS_VIEW (view));
4330
4331         continuous = continuous != FALSE;
4332
4333         if (view->continuous != continuous) {
4334                 view->continuous = continuous;
4335                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4336                 gtk_widget_queue_resize (GTK_WIDGET (view));
4337         }
4338
4339         g_object_notify (G_OBJECT (view), "continuous");
4340 }
4341
4342 gboolean
4343 ev_view_get_dual_page (EvView *view)
4344 {
4345         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4346
4347         return view->dual_page;
4348 }
4349
4350 void
4351 ev_view_set_dual_page (EvView   *view,
4352                        gboolean  dual_page)
4353 {
4354         g_return_if_fail (EV_IS_VIEW (view));
4355
4356         dual_page = dual_page != FALSE;
4357
4358         if (view->dual_page == dual_page)
4359                 return;
4360
4361         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4362         view->dual_page = dual_page;
4363         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4364          * preload_cache_size to be 2 if dual_page is set.
4365          */
4366         gtk_widget_queue_resize (GTK_WIDGET (view));
4367
4368         g_object_notify (G_OBJECT (view), "dual-page");
4369 }
4370
4371 void
4372 ev_view_set_fullscreen (EvView   *view,
4373                          gboolean  fullscreen)
4374 {
4375         g_return_if_fail (EV_IS_VIEW (view));
4376
4377         fullscreen = fullscreen != FALSE;
4378
4379         if (view->fullscreen == fullscreen)
4380                 return;
4381
4382         view->fullscreen = fullscreen;
4383         gtk_widget_queue_resize (GTK_WIDGET (view));
4384
4385         g_object_notify (G_OBJECT (view), "fullscreen");
4386 }
4387
4388 gboolean
4389 ev_view_get_fullscreen (EvView *view)
4390 {
4391         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4392
4393         return view->fullscreen;
4394 }
4395
4396 void
4397 ev_view_set_presentation (EvView   *view,
4398                           gboolean  presentation)
4399 {
4400         g_return_if_fail (EV_IS_VIEW (view));
4401
4402         presentation = presentation != FALSE;
4403
4404         if (view->presentation == presentation)
4405                 return;
4406
4407         if (!presentation)
4408                 view->presentation_state = EV_PRESENTATION_NORMAL;
4409
4410         view->presentation = presentation;
4411         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4412
4413         if (presentation) {
4414                 view->sizing_mode_saved = view->sizing_mode;
4415                 view->scale_saved = view->scale;
4416                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
4417         } else {
4418                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
4419                 ev_view_set_zoom (view, view->scale_saved, FALSE);
4420         }
4421
4422         gtk_widget_queue_resize (GTK_WIDGET (view));
4423
4424         if (presentation)
4425                 ev_view_presentation_transition_start (view);
4426         else
4427                 ev_view_presentation_transition_stop (view);
4428
4429         if (GTK_WIDGET_REALIZED (view)) {
4430                 if (view->presentation)
4431                         gdk_window_set_background (view->layout.bin_window,
4432                                                    &GTK_WIDGET (view)->style->black);
4433                 else
4434                         gdk_window_set_background (view->layout.bin_window,
4435                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
4436         }
4437
4438         g_object_notify (G_OBJECT (view), "presentation");
4439 }
4440
4441 gboolean
4442 ev_view_get_presentation (EvView *view)
4443 {
4444         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4445
4446         return view->presentation;
4447 }
4448
4449 static gboolean
4450 transition_next_page (EvView *view)
4451 {
4452         ev_view_next_page (view);
4453
4454         return FALSE;
4455 }
4456
4457 static void
4458 ev_view_presentation_transition_stop (EvView *view)
4459 {
4460         if (view->trans_timeout_id > 0)
4461                 g_source_remove (view->trans_timeout_id);
4462         view->trans_timeout_id = 0;
4463 }
4464
4465 static void
4466 ev_view_presentation_transition_start (EvView *view)
4467 {
4468         gdouble duration;
4469
4470         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
4471                 return;
4472
4473         ev_view_presentation_transition_stop (view);
4474
4475         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
4476                                                              view->current_page);
4477         if (duration > 0) {
4478 #if GLIB_CHECK_VERSION (2, 13, 0)
4479                 view->trans_timeout_id =
4480                         g_timeout_add_seconds (duration,
4481                                                (GSourceFunc) transition_next_page,
4482                                                view);
4483 #else
4484                 view->trans_timeout_id =
4485                         g_timeout_add (duration * 1000,
4486                                        (GSourceFunc) transition_next_page,
4487                                        view);
4488 #endif
4489         }
4490 }
4491
4492 void
4493 ev_view_set_sizing_mode (EvView       *view,
4494                          EvSizingMode  sizing_mode)
4495 {
4496         g_return_if_fail (EV_IS_VIEW (view));
4497
4498         if (view->sizing_mode == sizing_mode)
4499                 return;
4500
4501         view->sizing_mode = sizing_mode;
4502         gtk_widget_queue_resize (GTK_WIDGET (view));
4503
4504         g_object_notify (G_OBJECT (view), "sizing-mode");
4505 }
4506
4507 EvSizingMode
4508 ev_view_get_sizing_mode (EvView *view)
4509 {
4510         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
4511
4512         return view->sizing_mode;
4513 }
4514
4515 gboolean
4516 ev_view_can_zoom_in (EvView *view)
4517 {
4518         return view->scale * ZOOM_IN_FACTOR <= view->max_scale;
4519 }
4520
4521 gboolean
4522 ev_view_can_zoom_out (EvView *view)
4523 {
4524         return view->scale * ZOOM_OUT_FACTOR >= view->min_scale;
4525 }
4526
4527 void
4528 ev_view_zoom_in (EvView *view)
4529 {
4530         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4531
4532         if (view->presentation)
4533                 return;
4534
4535         view->pending_scroll = SCROLL_TO_CENTER;
4536         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
4537 }
4538
4539 void
4540 ev_view_zoom_out (EvView *view)
4541 {
4542         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4543
4544         if (view->presentation)
4545                 return;
4546
4547         view->pending_scroll = SCROLL_TO_CENTER;
4548         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
4549 }
4550
4551 void
4552 ev_view_rotate_right (EvView *view)
4553 {
4554         int rotation = view->rotation + 90;
4555
4556         if (rotation >= 360) {
4557                 rotation -= 360;
4558         }
4559
4560         ev_view_set_rotation (view, rotation);
4561 }
4562
4563 void
4564 ev_view_rotate_left (EvView *view)
4565 {
4566         int rotation = view->rotation - 90;
4567
4568         if (rotation < 0) {
4569                 rotation += 360;
4570         }
4571
4572         ev_view_set_rotation (view, rotation);
4573 }
4574
4575 void
4576 ev_view_set_rotation (EvView *view, int rotation)
4577 {
4578         view->rotation = rotation;
4579
4580         if (view->pixbuf_cache) {
4581                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4582                 gtk_widget_queue_resize (GTK_WIDGET (view));
4583         }
4584
4585         if (rotation != 0)
4586                 clear_selection (view);
4587
4588         g_object_notify (G_OBJECT (view), "rotation");
4589 }
4590
4591 int
4592 ev_view_get_rotation (EvView *view)
4593 {
4594         return view->rotation;
4595 }
4596
4597 static double
4598 zoom_for_size_fit_width (int doc_width,
4599                          int doc_height,
4600                          int target_width,
4601                          int target_height,
4602                          int vsb_width)
4603 {
4604         double scale;
4605
4606         scale = (double)target_width / doc_width;
4607
4608         if (doc_height * scale > target_height)
4609                 scale = (double) (target_width - vsb_width) / doc_width;
4610
4611         return scale;
4612 }
4613
4614 static double
4615 zoom_for_size_fit_height (int doc_width,
4616                           int doc_height,
4617                           int target_width,
4618                           int target_height,
4619                           int vsb_height)
4620 {
4621         double scale;
4622
4623         scale = (double)target_height / doc_height;
4624
4625         if (doc_width * scale > target_width)
4626                 scale = (double) (target_height - vsb_height) / doc_height;
4627
4628         return scale;
4629 }
4630
4631 static double
4632 zoom_for_size_best_fit (int doc_width,
4633                         int doc_height,
4634                         int target_width,
4635                         int target_height,
4636                         int vsb_width,
4637                         int hsb_width)
4638 {
4639         double w_scale;
4640         double h_scale;
4641
4642         w_scale = (double)target_width / doc_width;
4643         h_scale = (double)target_height / doc_height;
4644
4645         if (doc_height * w_scale > target_height)
4646                 w_scale = (double) (target_width - vsb_width) / doc_width;
4647         if (doc_width * h_scale > target_width)
4648                 h_scale = (double) (target_height - hsb_width) / doc_height;
4649
4650         return MIN (w_scale, h_scale);
4651 }
4652
4653
4654 static void
4655 ev_view_zoom_for_size_presentation (EvView *view,
4656                                     int     width,
4657                                     int     height)
4658 {
4659         int doc_width, doc_height;
4660         gdouble scale;
4661
4662         ev_page_cache_get_size (view->page_cache,
4663                                 view->current_page,
4664                                 view->rotation,
4665                                 1.0,
4666                                 &doc_width,
4667                                 &doc_height);
4668         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
4669         ev_view_set_zoom (view, scale, FALSE);
4670 }
4671
4672 static void
4673 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
4674                            int     width,
4675                            int     height,
4676                            int     vsb_width,
4677                            int     hsb_height)
4678 {
4679         int doc_width, doc_height;
4680         GtkBorder border;
4681         gdouble scale;
4682
4683         ev_page_cache_get_max_width (view->page_cache,
4684                                      view->rotation,
4685                                      1.0,
4686                                      &doc_width);
4687         ev_page_cache_get_max_height (view->page_cache,
4688                                       view->rotation,
4689                                       1.0,
4690                                       &doc_height);
4691         compute_border (view, doc_width, doc_height, &border);
4692
4693         doc_width = doc_width * 2;
4694         width -= (2 * (border.left + border.right) + 3 * view->spacing);
4695         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4696
4697         /* FIXME: We really need to calculate the overall height here, not the
4698          * page height.  We assume there's always a vertical scrollbar for
4699          * now.  We need to fix this. */
4700         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4701                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4702         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4703                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4704         else
4705                 g_assert_not_reached ();
4706
4707         ev_view_set_zoom (view, scale, FALSE);
4708 }
4709
4710 static void
4711 ev_view_zoom_for_size_continuous (EvView *view,
4712                                   int     width,
4713                                   int     height,
4714                                   int     vsb_width,
4715                                   int     hsb_height)
4716 {
4717         int doc_width, doc_height;
4718         GtkBorder border;
4719         gdouble scale;
4720
4721         ev_page_cache_get_max_width (view->page_cache,
4722                                      view->rotation,
4723                                      1.0,
4724                                      &doc_width);
4725         ev_page_cache_get_max_height (view->page_cache,
4726                                       view->rotation,
4727                                       1.0,
4728                                       &doc_height);
4729         compute_border (view, doc_width, doc_height, &border);
4730
4731         width -= (border.left + border.right + 2 * view->spacing);
4732         height -= (border.top + border.bottom + 2 * view->spacing - 1);
4733
4734         /* FIXME: We really need to calculate the overall height here, not the
4735          * page height.  We assume there's always a vertical scrollbar for
4736          * now.  We need to fix this. */
4737         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4738                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
4739         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4740                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
4741         else
4742                 g_assert_not_reached ();
4743
4744         ev_view_set_zoom (view, scale, FALSE);
4745 }
4746
4747 static void
4748 ev_view_zoom_for_size_dual_page (EvView *view,
4749                                  int     width,
4750                                  int     height,
4751                                  int     vsb_width,
4752                                  int     hsb_height)
4753 {
4754         GtkBorder border;
4755         gint doc_width, doc_height;
4756         gdouble scale;
4757         gint other_page;
4758
4759         other_page = view->current_page ^ 1;
4760
4761         /* Find the largest of the two. */
4762         ev_page_cache_get_size (view->page_cache,
4763                                 view->current_page,
4764                                 view->rotation,
4765                                 1.0,
4766                                 &doc_width, &doc_height);
4767
4768         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
4769                 gint width_2, height_2;
4770                 ev_page_cache_get_size (view->page_cache,
4771                                         other_page,
4772                                         view->rotation,
4773                                         1.0,
4774                                         &width_2, &height_2);
4775                 if (width_2 > doc_width)
4776                         doc_width = width_2;
4777                 if (height_2 > doc_height)
4778                         doc_height = height_2;
4779         }
4780         compute_border (view, doc_width, doc_height, &border);
4781
4782         doc_width = doc_width * 2;
4783         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
4784         height -= (border.top + border.bottom + 2 * view->spacing);
4785
4786         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4787                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4788         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4789                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4790         else
4791                 g_assert_not_reached ();
4792
4793         ev_view_set_zoom (view, scale, FALSE);
4794 }
4795
4796 static void
4797 ev_view_zoom_for_size_single_page (EvView *view,
4798                                    int     width,
4799                                    int     height,
4800                                    int     vsb_width,
4801                                    int     hsb_height)
4802 {
4803         int doc_width, doc_height;
4804         GtkBorder border;
4805         gdouble scale;
4806
4807         ev_page_cache_get_size (view->page_cache,
4808                                 view->current_page,
4809                                 view->rotation,
4810                                 1.0,
4811                                 &doc_width,
4812                                 &doc_height);
4813         /* Get an approximate border */
4814         compute_border (view, width, height, &border);
4815
4816         width -= (border.left + border.right + 2 * view->spacing);
4817         height -= (border.top + border.bottom + 2 * view->spacing);
4818
4819         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
4820                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
4821         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
4822                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
4823         else
4824                 g_assert_not_reached ();
4825
4826         ev_view_set_zoom (view, scale, FALSE);
4827 }
4828
4829 static void
4830 ev_view_set_zoom_for_size (EvView *view,
4831                            int     width,
4832                            int     height,
4833                            int     vsb_width,
4834                            int     hsb_height)
4835 {
4836         g_return_if_fail (EV_IS_VIEW (view));
4837         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
4838                           view->sizing_mode == EV_SIZING_BEST_FIT);
4839         g_return_if_fail (width >= 0);
4840         g_return_if_fail (height >= 0);
4841
4842         if (view->document == NULL)
4843                 return;
4844
4845         if (view->presentation)
4846                 ev_view_zoom_for_size_presentation (view, width, height);
4847         else if (view->continuous && view->dual_page)
4848                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
4849         else if (view->continuous)
4850                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
4851         else if (view->dual_page)
4852                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
4853         else
4854                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
4855 }
4856
4857 /*** Find ***/
4858 static void
4859 update_find_status_message (EvView *view, gboolean this_page)
4860 {
4861         char *message;
4862
4863         if (this_page) {
4864                 int results;
4865
4866                 results = ev_document_find_get_n_results
4867                                 (EV_DOCUMENT_FIND (view->document),
4868                                  view->current_page);
4869                 /* TRANS: Sometimes this could be better translated as
4870                    "%d hit(s) on this page".  Therefore this string
4871                    contains plural cases. */
4872                 message = g_strdup_printf (ngettext ("%d found on this page",
4873                                                      "%d found on this page",
4874                                                      results),
4875                                            results);
4876         } else {
4877                 double percent;
4878
4879                 percent = ev_document_find_get_progress
4880                                 (EV_DOCUMENT_FIND (view->document));
4881                 message = g_strdup_printf (_("%3d%% remaining to search"),
4882                                            (int) ((1.0 - percent) * 100));
4883
4884         }
4885         ev_view_set_find_status (view, message);
4886         g_free (message);
4887 }
4888
4889 const char *
4890 ev_view_get_find_status (EvView *view)
4891 {
4892         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
4893
4894         return view->find_status;
4895 }
4896
4897 static void
4898 ev_view_set_find_status (EvView *view, const char *message)
4899 {
4900         g_return_if_fail (EV_IS_VIEW (view));
4901
4902         g_free (view->find_status);
4903         view->find_status = g_strdup (message);
4904         g_object_notify (G_OBJECT (view), "find-status");
4905 }
4906
4907 static void
4908 jump_to_find_result (EvView *view)
4909 {
4910         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4911         EvRectangle rect;
4912         GdkRectangle view_rect;
4913         int n_results;
4914         int page = view->current_page;
4915
4916         n_results = ev_document_find_get_n_results (find, page);
4917
4918         if (n_results > 0  && view->find_result < n_results) {
4919                 ev_document_find_get_result
4920                         (find, page, view->find_result, &rect);
4921
4922                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
4923                 ensure_rectangle_is_visible (view, &view_rect);
4924         }
4925 }
4926
4927 /**
4928  * jump_to_find_page
4929  * @view: #EvView instance
4930  * @direction: Direction to look
4931  * @shift: Shift from current page
4932  *
4933  * Jumps to the first page that has occurences of searched word.
4934  * Uses a direction where to look and a shift from current page.
4935  *
4936  */
4937 static void
4938 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
4939 {
4940         int n_pages, i;
4941
4942         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4943
4944         for (i = 0; i < n_pages; i++) {
4945                 int has_results;
4946                 int page;
4947
4948                 if (direction == EV_VIEW_FIND_NEXT)
4949                         page = view->current_page + i;
4950                 else
4951                         page = view->current_page - i;
4952                 page += shift;
4953
4954                 if (page >= n_pages) {
4955                         page = page - n_pages;
4956                 }
4957                 if (page < 0)
4958                         page = page + n_pages;
4959
4960                 has_results = ev_document_find_page_has_results
4961                                 (EV_DOCUMENT_FIND (view->document), page);
4962                 if (has_results == -1) {
4963                         break;
4964                 } else if (has_results == 1) {
4965                         ev_page_cache_set_current_page (view->page_cache, page);
4966                         break;
4967                 }
4968         }
4969 }
4970
4971 gboolean
4972 ev_view_can_find_next (EvView *view)
4973 {
4974         if (EV_IS_DOCUMENT_FIND (view->document)) {
4975                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4976                 int i, n_pages;
4977
4978                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
4979                 for (i = 0; i < n_pages; i++) {
4980                         if (ev_document_find_get_n_results (find, i) > 0) {
4981                                 return TRUE;
4982                         }
4983                 }
4984         }
4985
4986         return FALSE;
4987 }
4988
4989 void
4990 ev_view_find_next (EvView *view)
4991 {
4992         int n_results, n_pages;
4993         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4994
4995         n_results = ev_document_find_get_n_results (find, view->current_page);
4996
4997         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4998
4999         view->find_result++;
5000
5001         if (view->find_result >= n_results) {
5002
5003                 view->find_result = 0;
5004                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5005                 jump_to_find_result (view);
5006         } else {
5007                 jump_to_find_result (view);
5008                 gtk_widget_queue_draw (GTK_WIDGET (view));
5009         }
5010 }
5011
5012 gboolean
5013 ev_view_can_find_previous (EvView *view)
5014 {
5015         if (EV_IS_DOCUMENT_FIND (view->document)) {
5016                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5017                 int i, n_pages;
5018
5019                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
5020                 for (i = n_pages - 1; i >= 0; i--) {
5021                         if (ev_document_find_get_n_results (find, i) > 0) {
5022                                 return TRUE;
5023                         }
5024                 }
5025         }
5026
5027         return FALSE;
5028 }
5029 void
5030 ev_view_find_previous (EvView *view)
5031 {
5032         int n_results, n_pages;
5033         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
5034         EvPageCache *page_cache;
5035
5036         page_cache = ev_page_cache_get (view->document);
5037
5038         n_results = ev_document_find_get_n_results (find, view->current_page);
5039
5040         n_pages = ev_page_cache_get_n_pages (page_cache);
5041
5042         view->find_result--;
5043
5044         if (view->find_result < 0) {
5045
5046                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5047                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
5048                 jump_to_find_result (view);
5049         } else {
5050                 jump_to_find_result (view);
5051                 gtk_widget_queue_draw (GTK_WIDGET (view));
5052         }
5053 }
5054
5055 void ev_view_search_changed (EvView *view)
5056 {
5057         /* search string has changed, focus on new search result */
5058         view->jump_to_find_result = TRUE;
5059 }
5060
5061 void ev_view_set_highlight_search (EvView *view, gboolean value)
5062 {
5063         view->highlight_find_results = value;
5064         gtk_widget_queue_draw (GTK_WIDGET (view));
5065 }
5066
5067 /*** Selections ***/
5068
5069 /* compute_new_selection_rect/text calculates the area currently selected by
5070  * view_rect.  each handles a different mode;
5071  */
5072 static GList *
5073 compute_new_selection_rect (EvView       *view,
5074                             GdkPoint     *start,
5075                             GdkPoint     *stop)
5076 {
5077         GdkRectangle view_rect;
5078         int n_pages, i;
5079         GList *list = NULL;
5080
5081         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5082
5083         view_rect.x = MIN (start->x, stop->x);
5084         view_rect.y = MIN (start->y, stop->y);
5085         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5086         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5087
5088         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5089
5090         for (i = 0; i < n_pages; i++) {
5091                 GdkRectangle page_area;
5092                 GtkBorder border;
5093
5094                 if (get_page_extents (view, i, &page_area, &border)) {
5095                         GdkRectangle overlap;
5096
5097                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5098                                 EvViewSelection *selection;
5099
5100                                 selection = g_new0 (EvViewSelection, 1);
5101                                 selection->page = i;
5102                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5103                                                        &(selection->rect));
5104
5105                                 list = g_list_append (list, selection);
5106                         }
5107                 }
5108         }
5109
5110         return list;
5111 }
5112
5113 static gboolean
5114 gdk_rectangle_point_in (GdkRectangle *rectangle,
5115                         GdkPoint     *point)
5116 {
5117         return rectangle->x <= point->x &&
5118                 rectangle->y <= point->y &&
5119                 point->x < rectangle->x + rectangle->width &&
5120                 point->y < rectangle->y + rectangle->height;
5121 }
5122
5123 static GList *
5124 compute_new_selection_text (EvView          *view,
5125                             EvSelectionStyle style,
5126                             GdkPoint        *start,
5127                             GdkPoint        *stop)
5128 {
5129         int n_pages, i, first, last;
5130         GList *list = NULL;
5131         EvViewSelection *selection;
5132         gint width, height;
5133         int start_page, end_page;
5134
5135         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5136
5137         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5138
5139         /* First figure out the range of pages the selection
5140          * affects. */
5141         first = n_pages;
5142         last = 0;
5143         if (view->continuous) {
5144                 start_page = 0;
5145                 end_page = n_pages;
5146         } else if (view->dual_page) {
5147                 start_page = view->start_page;
5148                 end_page = view->end_page + 1;
5149         } else {
5150                 start_page = view->current_page;
5151                 end_page = view->current_page + 1;
5152         }
5153
5154         for (i = start_page; i < end_page; i++) {
5155                 GdkRectangle page_area;
5156                 GtkBorder border;
5157
5158                 get_page_extents (view, i, &page_area, &border);
5159                 if (gdk_rectangle_point_in (&page_area, start) ||
5160                     gdk_rectangle_point_in (&page_area, stop)) {
5161                         if (first == n_pages)
5162                                 first = i;
5163                         last = i;
5164                 }
5165
5166         }
5167
5168         /* Now create a list of EvViewSelection's for the affected
5169          * pages.  This could be an empty list, a list of just one
5170          * page or a number of pages.*/
5171         for (i = first; i < last + 1; i++) {
5172                 GdkRectangle page_area;
5173                 GtkBorder border;
5174                 GdkPoint *point;
5175
5176                 ev_page_cache_get_size (view->page_cache, i,
5177                                         view->rotation,
5178                                         1.0, &width, &height);
5179
5180                 selection = g_new0 (EvViewSelection, 1);
5181                 selection->page = i;
5182                 selection->style = style;
5183                 selection->rect.x1 = selection->rect.y1 = 0;
5184                 selection->rect.x2 = width;
5185                 selection->rect.y2 = height;
5186
5187                 get_page_extents (view, i, &page_area, &border);
5188
5189                 if (gdk_rectangle_point_in (&page_area, start))
5190                         point = start;
5191                 else
5192                         point = stop;
5193
5194                 if (i == first)
5195                         view_point_to_doc_point (view, point, &page_area,
5196                                                  &selection->rect.x1,
5197                                                  &selection->rect.y1);
5198
5199                 /* If the selection is contained within just one page,
5200                  * make sure we don't write 'start' into both points
5201                  * in selection->rect. */
5202                 if (first == last)
5203                         point = stop;
5204
5205                 if (i == last)
5206                         view_point_to_doc_point (view, point, &page_area,
5207                                                  &selection->rect.x2,
5208                                                  &selection->rect.y2);
5209
5210                 list = g_list_append (list, selection);
5211         }
5212
5213         return list;
5214 }
5215
5216 /* This function takes the newly calculated list, and figures out which regions
5217  * have changed.  It then queues a redraw approporiately.
5218  */
5219 static void
5220 merge_selection_region (EvView *view,
5221                         GList  *new_list)
5222 {
5223         GList *old_list;
5224         GList *new_list_ptr, *old_list_ptr;
5225
5226         /* Update the selection */
5227         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5228         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5229         view->selection_info.selections = new_list;
5230         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5231         g_object_notify (G_OBJECT (view), "has-selection");
5232
5233         new_list_ptr = new_list;
5234         old_list_ptr = old_list;
5235
5236         while (new_list_ptr || old_list_ptr) {
5237                 EvViewSelection *old_sel, *new_sel;
5238                 int cur_page;
5239                 GdkRegion *region = NULL;
5240
5241                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5242                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5243
5244                 /* Assume that the lists are in order, and we run through them
5245                  * comparing them, one page at a time.  We come out with the
5246                  * first page we see. */
5247                 if (new_sel && old_sel) {
5248                         if (new_sel->page < old_sel->page) {
5249                                 new_list_ptr = new_list_ptr->next;
5250                                 old_sel = NULL;
5251                         } else if (new_sel->page > old_sel->page) {
5252                                 old_list_ptr = old_list_ptr->next;
5253                                 new_sel = NULL;
5254                         } else {
5255                                 new_list_ptr = new_list_ptr->next;
5256                                 old_list_ptr = old_list_ptr->next;
5257                         }
5258                 } else if (new_sel) {
5259                         new_list_ptr = new_list_ptr->next;
5260                 } else if (old_sel) {
5261                         old_list_ptr = old_list_ptr->next;
5262                 }
5263
5264                 g_assert (new_sel || old_sel);
5265
5266                 /* is the page we're looking at on the screen?*/
5267                 cur_page = new_sel ? new_sel->page : old_sel->page;
5268                 if (cur_page < view->start_page || cur_page > view->end_page)
5269                         continue;
5270
5271                 /* seed the cache with a new page.  We are going to need the new
5272                  * region too. */
5273                 if (new_sel) {
5274                         GdkRegion *tmp_region = NULL;
5275
5276                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5277                                                                cur_page,
5278                                                                view->scale,
5279                                                                &tmp_region);
5280
5281                         if (tmp_region) {
5282                                 new_sel->covered_region = gdk_region_copy (tmp_region);
5283                         }
5284                 }
5285
5286                 /* Now we figure out what needs redrawing */
5287                 if (old_sel && new_sel) {
5288                         if (old_sel->covered_region && new_sel->covered_region) {
5289                                 /* We only want to redraw the areas that have
5290                                  * changed, so we xor the old and new regions
5291                                  * and redraw if it's different */
5292                                 region = gdk_region_copy (old_sel->covered_region);
5293                                 gdk_region_xor (region, new_sel->covered_region);
5294                                 if (gdk_region_empty (region)) {
5295                                         gdk_region_destroy (region);
5296                                         region = NULL;
5297                                 }
5298                         } else if (old_sel->covered_region) {
5299                                 region = gdk_region_copy (old_sel->covered_region);
5300                         } else if (new_sel->covered_region) {
5301                                 region = gdk_region_copy (new_sel->covered_region);
5302                         }
5303                 } else if (old_sel && !new_sel) {
5304                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
5305                                 region = gdk_region_copy (old_sel->covered_region);
5306                         }
5307                 } else if (!old_sel && new_sel) {
5308                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
5309                                 region = gdk_region_copy (new_sel->covered_region);
5310                         }
5311                 } else {
5312                         g_assert_not_reached ();
5313                 }
5314
5315                 /* Redraw the damaged region! */
5316                 if (region) {
5317                         GdkRectangle page_area;
5318                         GtkBorder border;
5319
5320                         /* I don't know why but the region is smaller
5321                          * than expected. This hack fixes it, I guess
5322                          * 10 pixels more won't hurt
5323                          */
5324                         gdk_region_shrink (region, -5, -5);
5325
5326                         get_page_extents (view, cur_page, &page_area, &border);
5327                         gdk_region_offset (region,
5328                                            page_area.x + border.left - view->scroll_x,
5329                                            page_area.y + border.top - view->scroll_y);
5330                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
5331                         gdk_region_destroy (region);
5332                 }
5333         }
5334
5335         /* Free the old list, now that we're done with it. */
5336         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5337 }
5338
5339 static void
5340 compute_selections (EvView          *view,
5341                     EvSelectionStyle style,
5342                     GdkPoint        *start,
5343                     GdkPoint        *stop)
5344 {
5345         GList *list;
5346
5347         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5348                 list = compute_new_selection_rect (view, start, stop);
5349         else
5350                 list = compute_new_selection_text (view, style, start, stop);
5351         merge_selection_region (view, list);
5352 }
5353
5354 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5355  */
5356 static void
5357 selection_free (EvViewSelection *selection)
5358 {
5359         if (selection->covered_region)
5360                 gdk_region_destroy (selection->covered_region);
5361         g_free (selection);
5362 }
5363
5364 static void
5365 clear_selection (EvView *view)
5366 {
5367         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5368         view->selection_info.selections = NULL;
5369         view->selection_info.in_selection = FALSE;
5370         if (view->pixbuf_cache)
5371                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5372         g_object_notify (G_OBJECT (view), "has-selection");
5373 }
5374
5375 void
5376 ev_view_select_all (EvView *view)
5377 {
5378         GList *selections = NULL;
5379         int n_pages, i;
5380
5381         /* Disable selection on rotated pages for the 0.4.0 series */
5382         if (view->rotation != 0)
5383                 return;
5384
5385         clear_selection (view);
5386
5387         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5388         for (i = 0; i < n_pages; i++) {
5389                 int width, height;
5390                 EvViewSelection *selection;
5391
5392                 ev_page_cache_get_size (view->page_cache,
5393                                         i,
5394                                         view->rotation,
5395                                         1.0, &width, &height);
5396
5397                 selection = g_new0 (EvViewSelection, 1);
5398                 selection->page = i;
5399                 selection->style = EV_SELECTION_STYLE_GLYPH;
5400                 selection->rect.x1 = selection->rect.y1 = 0;
5401                 selection->rect.x2 = width;
5402                 selection->rect.y2 = height;
5403
5404                 selections = g_list_append (selections, selection);
5405         }
5406
5407         merge_selection_region (view, selections);
5408         gtk_widget_queue_draw (GTK_WIDGET (view));
5409 }
5410
5411 gboolean
5412 ev_view_get_has_selection (EvView *view)
5413 {
5414         return view->selection_info.selections != NULL;
5415 }
5416
5417 static char *
5418 get_selected_text (EvView *view)
5419 {
5420         GString *text;
5421         GList *l;
5422         gchar *normalized_text;
5423         EvRenderContext *rc;
5424
5425         text = g_string_new (NULL);
5426         rc = ev_render_context_new (view->rotation, 1, view->scale);
5427
5428         ev_document_doc_mutex_lock ();
5429
5430         for (l = view->selection_info.selections; l != NULL; l = l->next) {
5431                 EvViewSelection *selection = (EvViewSelection *)l->data;
5432                 gchar *tmp;
5433
5434                 ev_render_context_set_page (rc, selection->page);
5435                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
5436                                                       rc, selection->style,
5437                                                       &(selection->rect));
5438
5439                 g_string_append (text, tmp);
5440                 g_free (tmp);
5441         }
5442
5443         ev_document_doc_mutex_unlock ();
5444
5445         g_object_unref (rc);
5446
5447         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5448         g_string_free (text, TRUE);
5449         return normalized_text;
5450 }
5451
5452 void
5453 ev_view_copy (EvView *ev_view)
5454 {
5455         GtkClipboard *clipboard;
5456         char *text;
5457
5458         if (!EV_IS_SELECTION (ev_view->document))
5459                 return;
5460
5461         text = get_selected_text (ev_view);
5462         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5463                                               GDK_SELECTION_CLIPBOARD);
5464         gtk_clipboard_set_text (clipboard, text, -1);
5465         g_free (text);
5466 }
5467
5468 static void
5469 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5470                         GtkSelectionData *selection_data,
5471                         guint             info,
5472                         gpointer          data)
5473 {
5474         EvView *ev_view = EV_VIEW (data);
5475         char *text;
5476
5477         if (!EV_IS_SELECTION (ev_view->document))
5478                 return;
5479
5480         text = get_selected_text (ev_view);
5481         if (text) {
5482                 gtk_selection_data_set_text (selection_data, text, -1);
5483                 g_free (text);
5484         }
5485 }
5486
5487 static void
5488 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5489                           gpointer      data)
5490 {
5491         EvView *view = EV_VIEW (data);
5492
5493         clear_selection (view);
5494 }
5495
5496 static void
5497 ev_view_update_primary_selection (EvView *ev_view)
5498 {
5499         GtkClipboard *clipboard;
5500
5501         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5502                                               GDK_SELECTION_PRIMARY);
5503
5504         if (ev_view->selection_info.selections) {
5505                 if (!gtk_clipboard_set_with_owner (clipboard,
5506                                                    clipboard_targets,
5507                                                    G_N_ELEMENTS (clipboard_targets),
5508                                                    ev_view_primary_get_cb,
5509                                                    ev_view_primary_clear_cb,
5510                                                    G_OBJECT (ev_view)))
5511                         ev_view_primary_clear_cb (clipboard, ev_view);
5512         } else {
5513                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5514                         gtk_clipboard_clear (clipboard);
5515         }
5516 }
5517
5518 /*** Cursor operations ***/
5519
5520 static GdkCursor *
5521 ev_view_create_invisible_cursor(void)
5522 {
5523        GdkBitmap *empty;
5524        GdkColor black = { 0, 0, 0, 0 };
5525        static char bits[] = { 0x00 };
5526
5527        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
5528
5529        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
5530 }
5531
5532 static void
5533 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5534 {
5535         GdkCursor *cursor = NULL;
5536         GdkDisplay *display;
5537         GtkWidget *widget;
5538
5539         if (view->cursor == new_cursor) {
5540                 return;
5541         }
5542
5543         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5544         display = gtk_widget_get_display (widget);
5545         view->cursor = new_cursor;
5546
5547         switch (new_cursor) {
5548                 case EV_VIEW_CURSOR_NORMAL:
5549                         gdk_window_set_cursor (view->layout.bin_window, NULL);
5550                         break;
5551                 case EV_VIEW_CURSOR_IBEAM:
5552                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
5553                         break;
5554                 case EV_VIEW_CURSOR_LINK:
5555                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
5556                         break;
5557                 case EV_VIEW_CURSOR_WAIT:
5558                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
5559                         break;
5560                 case EV_VIEW_CURSOR_HIDDEN:
5561                         cursor = ev_view_create_invisible_cursor ();
5562                         break;
5563                 case EV_VIEW_CURSOR_DRAG:
5564                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
5565                         break;
5566         }
5567
5568         if (cursor) {
5569                 gdk_window_set_cursor (view->layout.bin_window, cursor);
5570                 gdk_cursor_unref (cursor);
5571                 gdk_flush();
5572         }
5573 }
5574
5575 void
5576 ev_view_hide_cursor (EvView *view)
5577 {
5578        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5579 }
5580
5581 void
5582 ev_view_show_cursor (EvView *view)
5583 {
5584        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5585 }
5586
5587 static void
5588 ev_view_reset_presentation_state (EvView *view)
5589 {
5590         if (!view->presentation ||
5591             view->presentation_state == EV_PRESENTATION_NORMAL)
5592                 return;
5593
5594         view->presentation_state = EV_PRESENTATION_NORMAL;
5595         gdk_window_set_background (view->layout.bin_window,
5596                                    &GTK_WIDGET (view)->style->black);
5597         gtk_widget_queue_draw (GTK_WIDGET (view));
5598 }
5599
5600 gboolean
5601 ev_view_next_page (EvView *view)
5602 {
5603         int page, n_pages;
5604
5605         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5606
5607         if (!view->page_cache)
5608                 return FALSE;
5609
5610         if (view->presentation &&
5611             (view->presentation_state == EV_PRESENTATION_BLACK ||
5612              view->presentation_state == EV_PRESENTATION_WHITE)) {
5613                 ev_view_reset_presentation_state (view);
5614                 return FALSE;
5615         }
5616
5617         ev_view_presentation_transition_stop (view);
5618         ev_view_reset_presentation_state (view);
5619
5620         page = ev_page_cache_get_current_page (view->page_cache);
5621         n_pages = ev_page_cache_get_n_pages (view->page_cache);
5622
5623         if (view->dual_page && !view->presentation)
5624                 page = page + 2;
5625         else
5626                 page = page + 1;
5627
5628         if (page < n_pages) {
5629                 ev_page_cache_set_current_page (view->page_cache, page);
5630                 return TRUE;
5631         } else if (view->presentation && page == n_pages) {
5632                 view->presentation_state = EV_PRESENTATION_END;
5633                 gtk_widget_queue_draw (GTK_WIDGET (view));
5634                 return TRUE;
5635         } else if (view->dual_page && page == n_pages) {
5636                 ev_page_cache_set_current_page (view->page_cache, page - 1);
5637                 return TRUE;
5638         } else {
5639                 return FALSE;
5640         }
5641 }
5642
5643 gboolean
5644 ev_view_previous_page (EvView *view)
5645 {
5646         int page;
5647
5648         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5649
5650         if (!view->page_cache)
5651                 return FALSE;
5652
5653         if (view->presentation &&
5654             view->presentation_state == EV_PRESENTATION_END) {
5655                 ev_view_reset_presentation_state (view);
5656                 return TRUE;
5657         }
5658
5659         if (view->presentation &&
5660             (view->presentation_state == EV_PRESENTATION_BLACK ||
5661              view->presentation_state == EV_PRESENTATION_WHITE)) {
5662                 ev_view_reset_presentation_state (view);
5663                 return FALSE;
5664         }
5665
5666         ev_view_reset_presentation_state (view);
5667
5668         page = ev_page_cache_get_current_page (view->page_cache);
5669
5670         if (view->dual_page && !view->presentation)
5671                 page = page - 2;
5672         else
5673                 page = page - 1;
5674
5675         if (page >= 0) {
5676                 ev_page_cache_set_current_page (view->page_cache, page);
5677                 return TRUE;
5678         } else if (ev_view_get_dual_page (view) && page == -1) {
5679                 ev_page_cache_set_current_page (view->page_cache, 0);
5680                 return TRUE;
5681         } else {
5682                 return FALSE;
5683         }
5684 }
5685
5686 /*** Enum description for usage in signal ***/
5687
5688 GType
5689 ev_sizing_mode_get_type (void)
5690 {
5691   static GType etype = 0;
5692   if (etype == 0) {
5693     static const GEnumValue values[] = {
5694       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
5695       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
5696       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
5697       { 0, NULL, NULL }
5698     };
5699     etype = g_enum_register_static ("EvSizingMode", values);
5700   }
5701   return etype;
5702 }
5703
5704 GType
5705 ev_scroll_type_get_type (void)
5706 {
5707   static GType etype = 0;
5708   if (etype == 0) {
5709     static const GEnumValue values[] = {
5710       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
5711       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
5712       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5713       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
5714       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
5715       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
5716       { 0, NULL, NULL }
5717     };
5718     etype = g_enum_register_static ("EvScrollType", values);
5719   }
5720   return etype;
5721 }
5722
5723 void
5724 ev_view_update_view_size (EvView *view, GtkScrolledWindow * scrolled_window)
5725 {
5726         int width, height;
5727         GtkRequisition vsb_requisition;
5728         GtkRequisition hsb_requisition;
5729         int scrollbar_spacing;
5730
5731         /* Calculate the width available for the content */
5732         width  = GTK_WIDGET (scrolled_window)->allocation.width;
5733         height = GTK_WIDGET (scrolled_window)->allocation.height;
5734
5735         if (gtk_scrolled_window_get_shadow_type (scrolled_window) == GTK_SHADOW_IN
5736             && view) {
5737                 width -=  2 * GTK_WIDGET(view)->style->xthickness;
5738                 height -= 2 * GTK_WIDGET(view)->style->ythickness;
5739         }
5740
5741         gtk_widget_size_request (scrolled_window->vscrollbar, &vsb_requisition);
5742         gtk_widget_size_request (scrolled_window->hscrollbar, &hsb_requisition);
5743         gtk_widget_style_get (GTK_WIDGET (scrolled_window),
5744                               "scrollbar_spacing",
5745                               &scrollbar_spacing,
5746                               NULL);
5747
5748         if (EV_IS_VIEW(view)) {
5749                 ev_view_set_zoom_for_size (EV_VIEW (view),
5750                                            MAX (1, width),
5751                                            MAX (1, height),
5752                                            vsb_requisition.width + scrollbar_spacing,
5753                                            hsb_requisition.height + scrollbar_spacing);
5754         }
5755 }