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 #include <libgnomevfs/gnome-vfs-utils.h>
  31
  32 #include "ev-marshal.h"
  33 #include "ev-view.h"
  34 #include "ev-view-private.h"
  35 #include "ev-utils.h"
  36 #include "ev-selection.h"
  37 #include "ev-document-links.h"
  38 #include "ev-document-find.h"
  39 #include "ev-document-misc.h"
  40 #include "ev-debug.h"
  41 #include "ev-job-queue.h"
  42 #include "ev-page-cache.h"
  43 #include "ev-pixbuf-cache.h"
  44 #include "ev-tooltip.h"
  45
  46 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  47 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  48 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  49
  50
  51 enum {
  52         PROP_0,
  53         PROP_STATUS,
  54         PROP_FIND_STATUS,
  55         PROP_CONTINUOUS,
  56         PROP_DUAL_PAGE,
  57         PROP_FULLSCREEN,
  58         PROP_PRESENTATION,
  59         PROP_SIZING_MODE,
  60         PROP_ZOOM,
  61         PROP_ROTATION,
  62         PROP_HAS_SELECTION,
  63 };
  64
  65 enum {
  66         SIGNAL_BINDING_ACTIVATED,
  67         SIGNAL_ZOOM_INVALID,
  68         SIGNAL_EXTERNAL_LINK,
  69         SIGNAL_POPUP_MENU,
  70         N_SIGNALS,
  71 };
  72
  73 enum {
  74         TARGET_STRING,
  75         TARGET_TEXT,
  76         TARGET_COMPOUND_TEXT,
  77         TARGET_UTF8_STRING,
  78         TARGET_TEXT_BUFFER_CONTENTS
  79 };
  80
  81 static const GtkTargetEntry targets[] = {
  82         { "STRING", 0, TARGET_STRING },
  83         { "TEXT",   0, TARGET_TEXT },
  84         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  85         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  86 };
  87
  88 static guint signals[N_SIGNALS];
  89
  90 typedef enum {
  91         EV_VIEW_FIND_NEXT,
  92         EV_VIEW_FIND_PREV
  93 } EvViewFindDirection;
  94
  95 #define ZOOM_IN_FACTOR  1.2
  96 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  97
  98 #define MIN_SCALE 0.05409
  99 #define MAX_SCALE 4.0
 100
 101 #define SCROLL_TIME 150
 102
 103 /*** Scrolling ***/
 104 static void       scroll_to_current_page                     (EvView *view,
 105                                                               GtkOrientation orientation);
 106 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 107                                                               GtkAdjustment      *hadjustment,
 108                                                               GtkAdjustment      *vadjustment);
 109 static void       view_update_range_and_current_page         (EvView             *view);
 110 static void       set_scroll_adjustment                      (EvView             *view,
 111                                                               GtkOrientation      orientation,
 112                                                               GtkAdjustment      *adjustment);
 113 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 114                                                               GtkAdjustment      *hadjustment,
 115                                                               GtkAdjustment      *vadjustment);
 116 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 117                                                               guint               keyval,
 118                                                               GdkModifierType modifiers,
 119                                                               EvScrollType       scroll,
 120                                                               gboolean            horizontal);
 121 static void       ensure_rectangle_is_visible                (EvView             *view,
 122                                                               GdkRectangle       *rect);
 123
 124 /*** Geometry computations ***/
 125 static void       compute_border                             (EvView             *view,
 126                                                               int                 width,
 127                                                               int                 height,
 128                                                               GtkBorder          *border);
 129 static void       get_page_y_offset                          (EvView *view,
 130                                                               int page,
 131                                                               double zoom,
 132                                                               int *y_offset);
 133 static gboolean   get_page_extents                           (EvView             *view,
 134                                                               gint                page,
 135                                                               GdkRectangle       *page_area,
 136                                                               GtkBorder          *border);
 137 static void       view_rect_to_doc_rect                      (EvView             *view,
 138                                                               GdkRectangle       *view_rect,
 139                                                               GdkRectangle       *page_area,
 140                                                               EvRectangle        *doc_rect);
 141 static void       doc_rect_to_view_rect                      (EvView             *view,
 142                                                               int                 page,
 143                                                               EvRectangle        *doc_rect,
 144                                                               GdkRectangle       *view_rect);
 145 static void       find_page_at_location                      (EvView             *view,
 146                                                               gdouble             x,
 147                                                               gdouble             y,
 148                                                               gint               *page,
 149                                                               gint               *x_offset,
 150                                                               gint               *y_offset);
 151 static gboolean  doc_point_to_view_point                     (EvView       *view,
 152                                                               int           page,
 153                                                               EvPoint      *doc_point,
 154                                                               GdkPoint     *view_point);
 155 /*** Hyperrefs ***/
 156 static EvLink *   ev_view_get_link_at_location               (EvView  *view,
 157                                                               gdouble  x,
 158                                                               gdouble  y);
 159 static char*      tip_from_link                              (EvView             *view,
 160                                                               EvLink             *link);
 161 static void       handle_link_over_xy                        (EvView *view,
 162                                                               gint x,
 163                                                               gint y);
 164 /*** GtkWidget implementation ***/
 165 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 166                                                               GtkRequisition     *requisition);
 167 static void       ev_view_size_request_continuous            (EvView             *view,
 168                                                               GtkRequisition     *requisition);
 169 static void       ev_view_size_request_dual_page             (EvView             *view,
 170                                                               GtkRequisition     *requisition);
 171 static void       ev_view_size_request_single_page           (EvView             *view,
 172                                                               GtkRequisition     *requisition);
 173 static void       ev_view_size_request                       (GtkWidget          *widget,
 174                                                               GtkRequisition     *requisition);
 175 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 176                                                               GtkAllocation      *allocation);
 177 static void       ev_view_realize                            (GtkWidget          *widget);
 178 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 179                                                               GdkEventScroll     *event);
 180 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 181                                                               GdkEventExpose     *event);
 182 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 183 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 184                                                               GdkEventButton     *event);
 185 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 186                                                               GdkEventMotion     *event);
 187 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 188                                                               GdkEventButton     *event);
 189 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 190                                                               GdkEventCrossing   *event);
 191 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 192                                                               GdkEventCrossing   *event);
 193 static void       ev_view_style_set                          (GtkWidget          *widget,
 194                                                               GtkStyle           *old_style);
 195
 196 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 197
 198 /*** Drawing ***/
 199 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 200 static void       draw_rubberband                            (GtkWidget          *widget,
 201                                                               GdkWindow          *window,
 202                                                               const GdkRectangle *rect,
 203                                                               guchar              alpha);
 204 static void       highlight_find_results                     (EvView             *view,
 205                                                               int                 page);
 206 static void       draw_one_page                              (EvView             *view,
 207                                                               gint                page,
 208                                                               GdkRectangle       *page_area,
 209                                                               GtkBorder          *border,
 210                                                               GdkRectangle       *expose_area,
 211                                                               gboolean           *page_ready);
 212 static void       draw_loading_text                          (EvView             *view,
 213                                                               GdkRectangle       *page_area,
 214                                                               GdkRectangle       *expose_area);
 215
 216 /*** Callbacks ***/
 217 static void       find_changed_cb                            (EvDocument         *document,
 218                                                               int                 page,
 219                                                               EvView             *view);
 220 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 221                                                               EvView             *view);
 222 static void       page_changed_cb                            (EvPageCache        *page_cache,
 223                                                               int                 new_page,
 224                                                               EvView             *view);
 225 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 226                                                               EvView             *view);
 227
 228 /*** GObject ***/
 229 static void       ev_view_finalize                           (GObject            *object);
 230 static void       ev_view_destroy                            (GtkObject          *object);
 231 static void       ev_view_set_property                       (GObject            *object,
 232                                                               guint               prop_id,
 233                                                               const GValue       *value,
 234                                                               GParamSpec         *pspec);
 235 static void       ev_view_get_property                       (GObject            *object,
 236                                                               guint               prop_id,
 237                                                               GValue             *value,
 238                                                               GParamSpec         *pspec);
 239 static void       ev_view_class_init                         (EvViewClass        *class);
 240 static void       ev_view_init                               (EvView             *view);
 241
 242 /*** Zoom and sizing ***/
 243 static double   zoom_for_size_fit_width                      (int doc_width,
 244                                                               int doc_height,
 245                                                               int target_width,
 246                                                               int target_height,
 247                                                               int vsb_width);
 248 static double   zoom_for_size_fit_height                     (int doc_width,
 249                                                               int doc_height,
 250                                                               int target_width,
 251                                                               int target_height,
 252                                                               int vsb_height);
 253 static double   zoom_for_size_best_fit                       (int doc_width,
 254                                                               int doc_height,
 255                                                               int target_width,
 256                                                               int target_height,
 257                                                               int vsb_width,
 258                                                               int hsb_width);
 259 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 260                                                               int     width,
 261                                                               int     height);
 262 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 263                                                                 int     width,
 264                                                                 int     height,
 265                                                                 int     vsb_width,
 266                                                                 int     hsb_height);
 267 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 268                                                                 int     width,
 269                                                                 int     height,
 270                                                                 int     vsb_width,
 271                                                                 int     hsb_height);
 272 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 273                                                                 int     width,
 274                                                                 int     height,
 275                                                                 int     vsb_width,
 276                                                                 int     hsb_height);
 277 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 278                                                                 int     width,
 279                                                                 int     height,
 280                                                                 int     vsb_width,
 281                                                                 int     hsb_height);
 282 /*** Cursors ***/
 283 static GdkCursor* ev_view_create_invisible_cursor            (void);
 284 static void       ev_view_set_cursor                         (EvView             *view,
 285                                                               EvViewCursor        new_cursor);
 286
 287 /*** Status messages ***/
 288 static void       ev_view_set_status                         (EvView             *view,
 289                                                               const char         *message);
 290 static void       update_find_status_message                 (EvView             *view,
 291                                                               gboolean            this_page);
 292 static void       ev_view_set_find_status                    (EvView             *view,
 293                                                               const char         *message);
 294 /*** Find ***/
 295 static void       jump_to_find_result                        (EvView             *view);
 296 static void       jump_to_find_page                          (EvView             *view,
 297                                                               EvViewFindDirection direction,
 298                                                               gint                shift);
 299
 300 /*** Selection ***/
 301 static void       compute_selections                         (EvView             *view,
 302                                                               GdkPoint           *start,
 303                                                               GdkPoint           *stop);
 304 static void       clear_selection                            (EvView             *view);
 305 static void       selection_free                             (EvViewSelection    *selection);
 306 static char*      get_selected_text                          (EvView             *ev_view);
 307 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 308                                                               GtkSelectionData   *selection_data,
 309                                                               guint               info,
 310                                                               gpointer            data);
 311 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 312                                                               gpointer            data);
 313 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 314
 315
 316 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 317
 318 static void
 319 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 320 {
 321         GdkPoint view_point;
 322
 323         if (view->document == NULL) {
 324                 return;
 325         }
 326
 327         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 328
 329         if (orientation == GTK_ORIENTATION_VERTICAL) {
 330                 view->pending_point.y = 0;
 331         } else {
 332                 view->pending_point.x = 0;
 333         }
 334
 335         if (orientation == GTK_ORIENTATION_VERTICAL) {
 336                 if (view->continuous) {
 337                         gtk_adjustment_clamp_page (view->vadjustment,
 338                                                    view_point.y - view->spacing / 2,
 339                                                    view_point.y + view->vadjustment->page_size);
 340                 } else {
 341                         gtk_adjustment_set_value (view->vadjustment,
 342                                                   CLAMP (view_point.y,
 343                                                   view->vadjustment->lower,
 344                                                   view->vadjustment->upper -
 345                                                   view->vadjustment->page_size));
 346                 }
 347         } else {
 348                 if (view->dual_page) {
 349                         gtk_adjustment_clamp_page (view->hadjustment,
 350                                                    view_point.x,
 351                                                    view_point.x + view->hadjustment->page_size);
 352                 } else {
 353                         gtk_adjustment_set_value (view->hadjustment,
 354                                                   CLAMP (view_point.x,
 355                                                   view->hadjustment->lower,
 356                                                   view->hadjustment->upper -
 357                                                   view->hadjustment->page_size));
 358                 }
 359         }
 360 }
 361
 362 static void
 363 view_set_adjustment_values (EvView         *view,
 364                             GtkOrientation  orientation)
 365 {
 366         GtkWidget *widget = GTK_WIDGET (view);
 367         GtkAdjustment *adjustment;
 368         int requisition;
 369         int allocation;
 370
 371         double factor;
 372         gint new_value;
 373
 374         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 375                 requisition = widget->requisition.width;
 376                 allocation = widget->allocation.width;
 377                 adjustment = view->hadjustment;
 378         } else {
 379                 requisition = widget->requisition.height;
 380                 allocation = widget->allocation.height;
 381                 adjustment = view->vadjustment;
 382         }
 383
 384         if (!adjustment)
 385                 return;
 386
 387         factor = 1.0;
 388         switch (view->pending_scroll) {
 389                 case SCROLL_TO_KEEP_POSITION:
 390                 case SCROLL_TO_FIND_LOCATION:
 391                         factor = (adjustment->value) / adjustment->upper;
 392                         break;
 393                 case SCROLL_TO_PAGE_POSITION:
 394                         break;
 395                 case SCROLL_TO_CENTER:
 396                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 397                         break;
 398         }
 399
 400         adjustment->page_size = allocation;
 401         adjustment->step_increment = allocation * 0.1;
 402         adjustment->page_increment = allocation * 0.9;
 403         adjustment->lower = 0;
 404         adjustment->upper = MAX (allocation, requisition);
 405
 406         /*
 407          * We add 0.5 to the values before to average out our rounding errors.
 408          */
 409         switch (view->pending_scroll) {
 410                 case SCROLL_TO_KEEP_POSITION:
 411                 case SCROLL_TO_FIND_LOCATION:
 412                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 413                         gtk_adjustment_set_value (adjustment, (int)new_value);
 414                         break;
 415                 case SCROLL_TO_PAGE_POSITION:
 416                         scroll_to_current_page (view, orientation);
 417                         break;
 418                 case SCROLL_TO_CENTER:
 419                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 420                                            0, adjustment->upper - adjustment->page_size);
 421                         gtk_adjustment_set_value (adjustment, (int)new_value);
 422                         break;
 423         }
 424
 425         gtk_adjustment_changed (adjustment);
 426 }
 427
 428 static void
 429 view_update_range_and_current_page (EvView *view)
 430 {
 431         gint current_page;
 432         gint best_current_page = -1;
 433
 434         /* Presentation trumps all other modes */
 435         if (view->presentation) {
 436                 view->start_page = view->current_page;
 437                 view->end_page = view->current_page;
 438         } else if (view->continuous) {
 439                 GdkRectangle current_area, unused, page_area;
 440                 GtkBorder border;
 441                 gboolean found = FALSE;
 442                 gint area_max = -1, area;
 443                 int i;
 444
 445                 if (!(view->vadjustment && view->hadjustment))
 446                         return;
 447
 448                 current_area.x = view->hadjustment->value;
 449                 current_area.width = view->hadjustment->upper;
 450                 current_area.y = view->vadjustment->value;
 451                 current_area.height = view->vadjustment->page_size;
 452
 453                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 454
 455                         get_page_extents (view, i, &page_area, &border);
 456
 457                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 458                                 area = unused.width * unused.height;
 459
 460                                 if (!found) {
 461                                         area_max = area;
 462                                         view->start_page = i;
 463                                         found = TRUE;
 464                                         best_current_page = i;
 465                                 }
 466                                 if (area > area_max) {
 467                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 468                                         area_max = area;
 469                                 }
 470
 471                                 view->end_page = i;
 472                         } else if (found) {
 473                                 break;
 474                         }
 475                 }
 476
 477         } else if (view->dual_page) {
 478                 if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 479                         view->start_page = view->current_page;
 480                         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 481                                 view->end_page = view->start_page + 1;
 482                         else
 483                                 view->end_page = view->start_page;
 484                 } else {
 485                         if (view->current_page < 1)
 486                                 view->start_page = view->current_page;
 487                         else
 488                                 view->start_page = view->current_page - 1;
 489                         view->end_page = view->current_page;
 490                 }
 491         } else {
 492                 view->start_page = view->current_page;
 493                 view->end_page = view->current_page;
 494         }
 495
 496         best_current_page = MAX (best_current_page, view->start_page);
 497         current_page = ev_page_cache_get_current_page (view->page_cache);
 498
 499         if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) {
 500                 view->current_page = best_current_page;
 501                 ev_page_cache_set_current_page (view->page_cache, best_current_page);
 502         }
 503
 504         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 505                                         view->start_page,
 506                                         view->end_page,
 507                                         view->rotation,
 508                                         view->scale,
 509                                         view->selection_info.selections);
 510 }
 511
 512 static void
 513 set_scroll_adjustment (EvView *view,
 514                        GtkOrientation  orientation,
 515                        GtkAdjustment  *adjustment)
 516 {
 517         GtkAdjustment **to_set;
 518
 519         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 520                 to_set = &view->hadjustment;
 521         else
 522                 to_set = &view->vadjustment;
 523
 524         if (*to_set != adjustment) {
 525                 if (*to_set) {
 526                         g_signal_handlers_disconnect_by_func (*to_set,
 527                                                               (gpointer) on_adjustment_value_changed,
 528                                                               view);
 529                         g_object_unref (*to_set);
 530                 }
 531
 532                 *to_set = adjustment;
 533                 view_set_adjustment_values (view, orientation);
 534
 535                 if (*to_set) {
 536                         g_object_ref (*to_set);
 537                         g_signal_connect (*to_set, "value_changed",
 538                                           G_CALLBACK (on_adjustment_value_changed), view);
 539                 }
 540         }
 541 }
 542
 543 static void
 544 ev_view_set_scroll_adjustments (EvView *view,
 545                                 GtkAdjustment  *hadjustment,
 546                                 GtkAdjustment  *vadjustment)
 547 {
 548         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 549         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 550
 551         on_adjustment_value_changed (NULL, view);
 552 }
 553
 554 static void
 555 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 556                            guint           keyval,
 557                            GdkModifierType modifiers,
 558                            EvScrollType    scroll,
 559                            gboolean        horizontal)
 560 {
 561   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 562
 563   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 564                                 "binding_activated", 2,
 565                                 EV_TYPE_SCROLL_TYPE, scroll,
 566                                 G_TYPE_BOOLEAN, horizontal);
 567   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 568                                 "binding_activated", 2,
 569                                 EV_TYPE_SCROLL_TYPE, scroll,
 570                                 G_TYPE_BOOLEAN, horizontal);
 571 }
 572
 573 void
 574 ev_view_scroll (EvView        *view,
 575                 EvScrollType   scroll,
 576                 gboolean horizontal)
 577 {
 578         GtkAdjustment *adjustment;
 579         double value, increment;
 580         gboolean first_page = FALSE;
 581         gboolean last_page = FALSE;
 582
 583         view->jump_to_find_result = FALSE;
 584
 585         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 586                 switch (scroll) {
 587                         case EV_SCROLL_PAGE_BACKWARD:
 588                         case EV_SCROLL_STEP_BACKWARD:
 589                                 ev_view_previous_page (view);
 590                                 break;
 591                         case EV_SCROLL_PAGE_FORWARD:
 592                         case EV_SCROLL_STEP_FORWARD:
 593                                 ev_view_next_page (view);
 594                                 break;
 595                         default:
 596                                 break;
 597                 }
 598                 return;
 599         }
 600
 601         /* Assign values for increment and vertical adjustment */
 602         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 603         increment = adjustment->page_size * 0.75;
 604         value = adjustment->value;
 605
 606         /* Assign boolean for first and last page */
 607         if (view->current_page == 0)
 608                 first_page = TRUE;
 609         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 610                 last_page = TRUE;
 611
 612         switch (scroll) {
 613                 case EV_SCROLL_PAGE_BACKWARD:
 614                         /* Do not jump backwards if at the first page */
 615                         if (value == (adjustment->lower) && first_page) {
 616                                 /* Do nothing */
 617                                 /* At the top of a page, assign the upper bound limit of previous page */
 618                         } else if (value == (adjustment->lower)) {
 619                                 value = adjustment->upper - adjustment->page_size;
 620                                 ev_view_previous_page (view);
 621                                 /* Jump to the top */
 622                         } else {
 623                                 value = MAX (value - increment, adjustment->lower);
 624                         }
 625                         break;
 626                 case EV_SCROLL_PAGE_FORWARD:
 627                         /* Do not jump forward if at the last page */
 628                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 629                                 /* Do nothing */
 630                         /* At the bottom of a page, assign the lower bound limit of next page */
 631                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 632                                 value = 0;
 633                                 ev_view_next_page (view);
 634                         /* Jump to the bottom */
 635                         } else {
 636                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 637                         }
 638                         break;
 639                 case EV_SCROLL_STEP_BACKWARD:
 640                         value -= adjustment->step_increment;
 641                         break;
 642                 case EV_SCROLL_STEP_FORWARD:
 643                         value += adjustment->step_increment;
 644                         break;
 645                 case EV_SCROLL_STEP_DOWN:
 646                         value -= adjustment->step_increment / 10;
 647                         break;
 648                 case EV_SCROLL_STEP_UP:
 649                         value += adjustment->step_increment / 10;
 650                         break;
 651                 default:
 652                         break;
 653         }
 654
 655         value = CLAMP (value, adjustment->lower,
 656                        adjustment->upper - adjustment->page_size);
 657
 658         gtk_adjustment_set_value (adjustment, value);
 659 }
 660
 661 #define MARGIN 5
 662
 663 static void
 664 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 665 {
 666         GtkWidget *widget = GTK_WIDGET (view);
 667         GtkAdjustment *adjustment;
 668         int value;
 669
 670         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 671
 672         adjustment = view->vadjustment;
 673
 674         if (rect->y < adjustment->value) {
 675                 value = MAX (adjustment->lower, rect->y - MARGIN);
 676                 gtk_adjustment_set_value (view->vadjustment, value);
 677         } else if (rect->y + rect->height >
 678                    adjustment->value + widget->allocation.height) {
 679                 value = MIN (adjustment->upper, rect->y + rect->height -
 680                              widget->allocation.height + MARGIN);
 681                 gtk_adjustment_set_value (view->vadjustment, value);
 682         }
 683
 684         adjustment = view->hadjustment;
 685
 686         if (rect->x < adjustment->value) {
 687                 value = MAX (adjustment->lower, rect->x - MARGIN);
 688                 gtk_adjustment_set_value (view->hadjustment, value);
 689         } else if (rect->x + rect->height >
 690                    adjustment->value + widget->allocation.width) {
 691                 value = MIN (adjustment->upper, rect->x + rect->width -
 692                              widget->allocation.width + MARGIN);
 693                 gtk_adjustment_set_value (view->hadjustment, value);
 694         }
 695
 696         gtk_widget_queue_resize (GTK_WIDGET (view));
 697 }
 698
 699 /*** Geometry computations ***/
 700
 701 static void
 702 compute_border (EvView *view, int width, int height, GtkBorder *border)
 703 {
 704         if (view->presentation) {
 705                 border->left = 0;
 706                 border->right = 0;
 707                 border->top = 0;
 708                 border->bottom = 0;
 709         } else {
 710                 ev_document_misc_get_page_border_size (width, height, border);
 711         }
 712 }
 713
 714 static void
 715 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 716 {
 717         int max_width, offset;
 718         GtkBorder border;
 719
 720         g_return_if_fail (y_offset != NULL);
 721
 722         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 723
 724         compute_border (view, max_width, max_width, &border);
 725
 726         if (view->dual_page) {
 727                 ev_page_cache_get_height_to_page (view->page_cache, page,
 728                                                   view->rotation, zoom, NULL, &offset);
 729                 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);
 730         } else {
 731                 ev_page_cache_get_height_to_page (view->page_cache, page,
 732                                                   view->rotation, zoom, &offset, NULL);
 733                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 734         }
 735
 736         *y_offset = offset;
 737         return;
 738 }
 739
 740 static gboolean
 741 get_page_extents (EvView       *view,
 742                   gint          page,
 743                   GdkRectangle *page_area,
 744                   GtkBorder    *border)
 745 {
 746         GtkWidget *widget;
 747         int width, height;
 748
 749         widget = GTK_WIDGET (view);
 750
 751         /* Get the size of the page */
 752         ev_page_cache_get_size (view->page_cache, page,
 753                                 view->rotation,
 754                                 view->scale,
 755                                 &width, &height);
 756         compute_border (view, width, height, border);
 757         page_area->width = width + border->left + border->right;
 758         page_area->height = height + border->top + border->bottom;
 759
 760         if (view->presentation) {
 761                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 762                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 763         } else if (view->continuous) {
 764                 gint max_width;
 765                 gint x, y;
 766
 767                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 768                                              view->scale, &max_width);
 769                 max_width = max_width + border->left + border->right;
 770                 /* Get the location of the bounding box */
 771                 if (view->dual_page) {
 772                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 773                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 774                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 775                                 x = x + (max_width - width - border->left - border->right);
 776                 } else {
 777                         x = view->spacing;
 778                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 779                 }
 780
 781                 get_page_y_offset (view, page, view->scale, &y);
 782
 783                 page_area->x = x;
 784                 page_area->y = y;
 785         } else {
 786                 gint x, y;
 787                 if (view->dual_page) {
 788                         gint width_2, height_2;
 789                         gint max_width = width;
 790                         gint max_height = height;
 791                         GtkBorder overall_border;
 792                         gint other_page;
 793
 794                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 795
 796                         /* First, we get the bounding box of the two pages */
 797                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 798                             && (0 <= other_page)) {
 799                                 ev_page_cache_get_size (view->page_cache,
 800                                                         other_page,
 801                                                         view->rotation,
 802                                                         view->scale,
 803                                                         &width_2, &height_2);
 804                                 if (width_2 > width)
 805                                         max_width = width_2;
 806                                 if (height_2 > height)
 807                                         max_height = height_2;
 808                         }
 809                         compute_border (view, max_width, max_height, &overall_border);
 810
 811                         /* Find the offsets */
 812                         x = view->spacing;
 813                         y = view->spacing;
 814
 815                         /* Adjust for being the left or right page */
 816                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 817                                 x = x + max_width - width;
 818                         else
 819                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 820
 821                         y = y + (max_height - height)/2;
 822
 823                         /* Adjust for extra allocation */
 824                         x = x + MAX (0, widget->allocation.width -
 825                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 826                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 827                 } else {
 828                         x = view->spacing;
 829                         y = view->spacing;
 830
 831                         /* Adjust for extra allocation */
 832                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 833                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 834                 }
 835
 836                 page_area->x = x;
 837                 page_area->y = y;
 838         }
 839
 840         return TRUE;
 841 }
 842
 843 static void
 844 view_point_to_doc_point (EvView *view,
 845                          GdkPoint *view_point,
 846                          GdkRectangle *page_area,
 847                          double  *doc_point_x,
 848                          double  *doc_point_y)
 849 {
 850         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 851         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 852 }
 853
 854 static void
 855 view_rect_to_doc_rect (EvView *view,
 856                        GdkRectangle *view_rect,
 857                        GdkRectangle *page_area,
 858                        EvRectangle  *doc_rect)
 859 {
 860         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 861         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 862         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 863         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 864 }
 865
 866 static gboolean
 867 doc_point_to_view_point (EvView       *view,
 868                          int           page,
 869                          EvPoint      *doc_point,
 870                          GdkPoint     *view_point)
 871 {
 872         GdkRectangle page_area;
 873         GtkBorder border;
 874         double x, y, view_x, view_y;
 875         int width, height;
 876
 877         ev_page_cache_get_size (view->page_cache, page,
 878                                 view->rotation,
 879                                 1.0,
 880                                 &width, &height);
 881
 882         if (view->rotation == 0) {
 883                 x = doc_point->x;
 884                 y = doc_point->y;
 885         } else if (view->rotation == 90) {
 886                 x = width - doc_point->y;
 887                 y = doc_point->x;
 888         } else if (view->rotation == 180) {
 889                 x = width - doc_point->x;
 890                 y = height - doc_point->y;
 891         } else if (view->rotation == 270) {
 892                 x = doc_point->y;
 893                 y = height - doc_point->x;
 894         } else {
 895                 g_assert_not_reached ();
 896         }
 897
 898         get_page_extents (view, page, &page_area, &border);
 899
 900         view_x = x * view->scale;
 901         view_y = y * view->scale;
 902         view_point->x = view_x + page_area.x;
 903         view_point->y = view_y + page_area.y;
 904
 905         return (view_x > 0 && view_x <= page_area.width &&
 906                 view_y > 0 && view_y <= page_area.height);
 907 }
 908
 909 static void
 910 doc_rect_to_view_rect (EvView       *view,
 911                        int           page,
 912                        EvRectangle  *doc_rect,
 913                        GdkRectangle *view_rect)
 914 {
 915         GdkRectangle page_area;
 916         GtkBorder border;
 917         double x, y, w, h;
 918         int width, height;
 919
 920         ev_page_cache_get_size (view->page_cache, page,
 921                                 view->rotation,
 922                                 1.0,
 923                                 &width, &height);
 924
 925         if (view->rotation == 0) {
 926                 x = doc_rect->x1;
 927                 y = doc_rect->y1;
 928                 w = doc_rect->x2 - doc_rect->x1;
 929                 h = doc_rect->y2 - doc_rect->y1;
 930         } else if (view->rotation == 90) {
 931                 x = width - doc_rect->y2;
 932                 y = doc_rect->x1;
 933                 w = doc_rect->y2 - doc_rect->y1;
 934                 h = doc_rect->x2 - doc_rect->x1;
 935         } else if (view->rotation == 180) {
 936                 x = width - doc_rect->x2;
 937                 y = height - doc_rect->y2;
 938                 w = doc_rect->x2 - doc_rect->x1;
 939                 h = doc_rect->y2 - doc_rect->y1;
 940         } else if (view->rotation == 270) {
 941                 x = doc_rect->y1;
 942                 y = height - doc_rect->x2;
 943                 w = doc_rect->y2 - doc_rect->y1;
 944                 h = doc_rect->x2 - doc_rect->x1;
 945         } else {
 946                 g_assert_not_reached ();
 947         }
 948
 949         get_page_extents (view, page, &page_area, &border);
 950
 951         view_rect->x = x * view->scale + page_area.x;
 952         view_rect->y = y * view->scale + page_area.y;
 953         view_rect->width = w * view->scale;
 954         view_rect->height = h * view->scale;
 955 }
 956
 957 static void
 958 find_page_at_location (EvView  *view,
 959                        gdouble  x,
 960                        gdouble  y,
 961                        gint    *page,
 962                        gint    *x_offset,
 963                        gint    *y_offset)
 964 {
 965         int i;
 966
 967         if (view->document == NULL)
 968                 return;
 969
 970         g_assert (page);
 971         g_assert (x_offset);
 972         g_assert (y_offset);
 973
 974         for (i = view->start_page; i <= view->end_page; i++) {
 975                 GdkRectangle page_area;
 976                 GtkBorder border;
 977
 978                 if (! get_page_extents (view, i, &page_area, &border))
 979                         continue;
 980
 981                 if ((x >= page_area.x + border.left) &&
 982                     (x < page_area.x + page_area.width - border.right) &&
 983                     (y >= page_area.y + border.top) &&
 984                     (y < page_area.y + page_area.height - border.bottom)) {
 985                         *page = i;
 986                         *x_offset = x - (page_area.x + border.left);
 987                         *y_offset = y - (page_area.y + border.top);
 988                         return;
 989                 }
 990         }
 991
 992         *page = -1;
 993 }
 994
 995 static gboolean
 996 location_in_text (EvView  *view,
 997                   gdouble  x,
 998                   gdouble  y)
 999 {
1000         GdkRegion *region;
1001         gint page = -1;
1002         gint x_offset = 0, y_offset = 0;
1003
1004         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1005
1006         if (page == -1)
1007                 return FALSE;
1008
1009         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1010
1011         if (region)
1012                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1013         else
1014                 return FALSE;
1015 }
1016
1017 static int
1018 ev_view_get_width (EvView *view)
1019 {
1020         return GTK_WIDGET (view)->allocation.width;
1021 }
1022
1023 static int
1024 ev_view_get_height (EvView *view)
1025 {
1026         return GTK_WIDGET (view)->allocation.height;
1027 }
1028
1029 static gboolean
1030 location_in_selected_text (EvView  *view,
1031                            gdouble  x,
1032                            gdouble  y)
1033 {
1034         gint page = -1;
1035         gint x_offset = 0, y_offset = 0;
1036         EvViewSelection *selection;
1037         GList *l = NULL;
1038
1039         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1040                 selection = (EvViewSelection *)l->data;
1041
1042                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1043
1044                 if (page != selection->page)
1045                         continue;
1046
1047                 if (selection->covered_region &&
1048                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1049                         return TRUE;
1050         }
1051
1052         return FALSE;
1053 }
1054
1055 static gboolean
1056 get_doc_point_from_offset (EvView *view,
1057                            gint    page,
1058                            gint    x_offset,
1059                            gint    y_offset,
1060                            gint   *x_new,
1061                            gint   *y_new)
1062 {
1063         int width, height;
1064         double x, y;
1065
1066         ev_page_cache_get_size (view->page_cache, page,
1067                                 view->rotation,
1068                                 1.0,
1069                                 &width, &height);
1070
1071         x_offset = x_offset / view->scale;
1072         y_offset = y_offset / view->scale;
1073
1074         if (view->rotation == 0) {
1075                 x = x_offset;
1076                 y = y_offset;
1077         } else if (view->rotation == 90) {
1078                 x = y_offset;
1079                 y = width - x_offset;
1080         } else if (view->rotation == 180) {
1081                 x = width - x_offset;
1082                 y = height - y_offset;
1083         } else if (view->rotation == 270) {
1084                 x = height - y_offset;
1085                 y = x_offset;
1086         } else {
1087                 g_assert_not_reached ();
1088         }
1089
1090         *x_new = x;
1091         *y_new = y;
1092
1093         return TRUE;
1094 }
1095
1096 /*** Hyperref ***/
1097 static EvLink *
1098 ev_view_get_link_at_location (EvView  *view,
1099                               gdouble  x,
1100                               gdouble  y)
1101 {
1102         gint page = -1;
1103         gint x_offset = 0, y_offset = 0;
1104         gint x_new = 0, y_new = 0;
1105         GList *link_mapping;
1106
1107         x += view->scroll_x;
1108         y += view->scroll_y;
1109
1110         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1111
1112         if (page == -1)
1113                 return NULL;
1114
1115
1116         if (get_doc_point_from_offset (view, page, x_offset,
1117                                        y_offset, &x_new, &y_new) == FALSE)
1118                 return NULL;
1119
1120         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1121
1122         if (link_mapping)
1123                 return ev_link_mapping_find (link_mapping, x_new, y_new);
1124         else
1125                 return NULL;
1126 }
1127
1128 static void
1129 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1130 {
1131         EvPoint doc_point;
1132         double zoom;
1133
1134         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - ev_link_dest_get_left (dest),
1135                                        ev_link_dest_get_bottom (dest) - ev_link_dest_get_top (dest),
1136                                        ev_view_get_width (view),
1137                                        ev_view_get_height (view), 0, 0);
1138
1139         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1140         ev_view_set_zoom (view, zoom, FALSE);
1141
1142         doc_point.x = ev_link_dest_get_left (dest);
1143         doc_point.y = ev_link_dest_get_top (dest);
1144
1145         view->current_page = ev_link_dest_get_page (dest);
1146         view->pending_point = doc_point;
1147         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1148
1149         gtk_widget_queue_resize (GTK_WIDGET (view));
1150 }
1151
1152 static void
1153 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1154 {
1155         EvPoint doc_point;
1156         int doc_width, doc_height, page;
1157         double zoom;
1158
1159         page = ev_link_dest_get_page (dest);
1160         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1161
1162         doc_point.x = ev_link_dest_get_left (dest);
1163         doc_point.y = 0;
1164
1165         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1166                                          ev_view_get_width (view),
1167                                          ev_view_get_height (view), 0);
1168
1169         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1170         ev_view_set_zoom (view, zoom, FALSE);
1171
1172         view->current_page = page;
1173         view->pending_point = doc_point;
1174         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1175
1176         gtk_widget_queue_resize (GTK_WIDGET (view));
1177 }
1178
1179 static void
1180 goto_fith_dest (EvView *view, EvLinkDest *dest)
1181 {
1182         EvPoint doc_point;
1183         int doc_width, doc_height, page;
1184         double zoom;
1185
1186         page = ev_link_dest_get_page (dest);
1187         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1188
1189         doc_point.x = 0;
1190         doc_point.y = ev_link_dest_get_top (dest);
1191
1192         zoom = zoom_for_size_fit_width (doc_width, ev_link_dest_get_top (dest),
1193                                         ev_view_get_width (view),
1194                                         ev_view_get_height (view), 0);
1195
1196         ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH);
1197         ev_view_set_zoom (view, zoom, FALSE);
1198
1199         view->current_page = page;
1200         view->pending_point = doc_point;
1201         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1202
1203         gtk_widget_queue_resize (GTK_WIDGET (view));
1204 }
1205
1206 static void
1207 goto_fit_dest (EvView *view, EvLinkDest *dest)
1208 {
1209         double zoom;
1210         int doc_width, doc_height;
1211         int page;
1212
1213         page = ev_link_dest_get_page (dest);
1214         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1215
1216         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1217                                        ev_view_get_height (view), 0, 0);
1218
1219         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1220         ev_view_set_zoom (view, zoom, FALSE);
1221
1222         view->current_page = page;
1223         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1224
1225         gtk_widget_queue_resize (GTK_WIDGET (view));
1226 }
1227
1228 static void
1229 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1230 {
1231         EvPoint doc_point;
1232         gint page;
1233         double zoom;
1234
1235         zoom = ev_link_dest_get_zoom (dest);
1236         page = ev_link_dest_get_page (dest);
1237
1238         if (zoom > 1) {
1239                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1240                 ev_view_set_zoom (view, zoom, FALSE);
1241         }
1242
1243         doc_point.x = ev_link_dest_get_left (dest);
1244         doc_point.y = ev_link_dest_get_top (dest);
1245
1246         view->current_page = page;
1247         view->pending_point = doc_point;
1248         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1249
1250         gtk_widget_queue_resize (GTK_WIDGET (view));
1251 }
1252
1253 static void
1254 goto_dest (EvView *view, EvLinkDest *dest)
1255 {
1256         EvLinkDestType type;
1257         int page, n_pages;
1258
1259         page = ev_link_dest_get_page (dest);
1260         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1261
1262         if (page < 0 || page >= n_pages)
1263                 return;
1264
1265         type = ev_link_dest_get_dest_type (dest);
1266
1267         switch (type) {
1268                 case EV_LINK_DEST_TYPE_PAGE:
1269                         ev_page_cache_set_current_page (view->page_cache, page);
1270                         break;
1271                 case EV_LINK_DEST_TYPE_FIT:
1272                         goto_fit_dest (view, dest);
1273                         break;
1274                 case EV_LINK_DEST_TYPE_FITH:
1275                         goto_fith_dest (view, dest);
1276                         break;
1277                 case EV_LINK_DEST_TYPE_FITV:
1278                         goto_fitv_dest (view, dest);
1279                         break;
1280                 case EV_LINK_DEST_TYPE_FITR:
1281                         goto_fitr_dest (view, dest);
1282                         break;
1283                 case EV_LINK_DEST_TYPE_XYZ:
1284                         goto_xyz_dest (view, dest);
1285                         break;
1286                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1287                         ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest));
1288                         break;
1289                 default:
1290                         g_assert_not_reached ();
1291         }
1292 }
1293
1294 void
1295 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1296 {
1297         EvLinkDestType type;
1298
1299         type = ev_link_dest_get_dest_type (dest);
1300
1301         if (type == EV_LINK_DEST_TYPE_NAMED) {
1302                 EvLinkDest  *dest2;
1303                 const gchar *named_dest;
1304
1305                 named_dest = ev_link_dest_get_named_dest (dest);
1306                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1307                                                           named_dest);
1308                 if (dest2) {
1309                         goto_dest (view, dest2);
1310                         g_object_unref (dest2);
1311                 }
1312
1313                 return;
1314         }
1315
1316         goto_dest (view, dest);
1317 }
1318
1319 void
1320 ev_view_handle_link (EvView *view, EvLink *link)
1321 {
1322         EvLinkAction    *action = NULL;
1323         EvLinkActionType type;
1324
1325         action = ev_link_get_action (link);
1326         if (!action)
1327                 return;
1328
1329         type = ev_link_action_get_action_type (action);
1330
1331         switch (type) {
1332                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1333                         EvLinkDest *dest;
1334
1335                         dest = ev_link_action_get_dest (action);
1336                         ev_view_goto_dest (view, dest);
1337                 }
1338                         break;
1339                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1340                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1341                 case EV_LINK_ACTION_TYPE_LAUNCH:
1342                 case EV_LINK_ACTION_TYPE_NAMED:
1343                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1344                         break;
1345         }
1346 }
1347
1348 static gchar *
1349 page_label_from_dest (EvView *view, EvLinkDest *dest)
1350 {
1351         EvLinkDestType type;
1352         gchar *msg = NULL;
1353
1354         type = ev_link_dest_get_dest_type (dest);
1355
1356         switch (type) {
1357                 case EV_LINK_DEST_TYPE_NAMED: {
1358                         EvLinkDest  *dest2;
1359                         const gchar *named_dest;
1360
1361                         named_dest = ev_link_dest_get_named_dest (dest);
1362                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1363                                                                   named_dest);
1364                         if (dest2) {
1365                                 msg = ev_page_cache_get_page_label (view->page_cache,
1366                                                                     ev_link_dest_get_page (dest2));
1367                                 g_object_unref (dest2);
1368                         }
1369                 }
1370
1371                         break;
1372                 default:
1373                         msg = ev_page_cache_get_page_label (view->page_cache,
1374                                                             ev_link_dest_get_page (dest));
1375         }
1376
1377         return msg;
1378 }
1379
1380 static char *
1381 tip_from_action_named (EvLinkAction *action)
1382 {
1383         const gchar *name = ev_link_action_get_name (action);
1384
1385         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1386                 return g_strdup (_("Go to first page"));
1387         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1388                 return g_strdup (_("Go to previous page"));
1389         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1390                 return g_strdup (_("Go to next page"));
1391         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1392                 return g_strdup (_("Go to last page"));
1393         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1394                 return g_strdup (_("Go to page"));
1395         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1396                 return g_strdup (_("Find"));
1397         }
1398
1399         return NULL;
1400 }
1401
1402 static char *
1403 tip_from_link (EvView *view, EvLink *link)
1404 {
1405         EvLinkAction *action;
1406         EvLinkActionType type;
1407         char *msg = NULL;
1408         char *page_label;
1409         const char *title;
1410
1411         action = ev_link_get_action (link);
1412         title = ev_link_get_title (link);
1413
1414         if (!action)
1415                 return title ? g_strdup (title) : NULL;
1416
1417         type = ev_link_action_get_action_type (action);
1418
1419         switch (type) {
1420                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1421                         page_label = page_label_from_dest (view,
1422                                                            ev_link_action_get_dest (action));
1423                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1424                         g_free (page_label);
1425                         break;
1426                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1427                         if (title) {
1428                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1429                                                        ev_link_action_get_filename (action));
1430                         } else {
1431                                 msg = g_strdup_printf (_("Go to file “%s”"),
1432                                                        ev_link_action_get_filename (action));
1433                         }
1434
1435                         break;
1436                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1437                         msg = g_strdup (ev_link_action_get_uri (action));
1438                         break;
1439                 case EV_LINK_ACTION_TYPE_LAUNCH:
1440                         msg = g_strdup_printf (_("Launch %s"),
1441                                                ev_link_action_get_filename (action));
1442                         break;
1443                 case EV_LINK_ACTION_TYPE_NAMED:
1444                         msg = tip_from_action_named (action);
1445                         break;
1446                 default:
1447                         if (title)
1448                                 msg = g_strdup (title);
1449                         break;
1450         }
1451
1452         return msg;
1453 }
1454
1455 static void
1456 handle_link_over_xy (EvView *view, gint x, gint y)
1457 {
1458         EvLink *link;
1459
1460         link = ev_view_get_link_at_location (view, x, y);
1461
1462         if (view->link_tooltip == NULL) {
1463                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1464         }
1465
1466         if (view->hovered_link != link) {
1467                 view->hovered_link = link;
1468                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1469         }
1470
1471         if (link) {
1472                 char *msg = tip_from_link (view, link);
1473
1474                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1475                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1476
1477                         ev_tooltip_set_position (tooltip, x, y);
1478                         ev_tooltip_set_text (tooltip, msg);
1479                         ev_tooltip_activate (tooltip);
1480                 }
1481                 g_free (msg);
1482
1483                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1484         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1485                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1486         } else {
1487                 ev_view_set_status (view, NULL);
1488                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1489                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1490                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1491         }
1492         return;
1493 }
1494
1495 /*** GtkWidget implementation ***/
1496
1497 static void
1498 ev_view_size_request_continuous_dual_page (EvView         *view,
1499                                            GtkRequisition *requisition)
1500 {
1501         int max_width;
1502         gint n_pages;
1503         GtkBorder border;
1504
1505         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1506                                      view->scale, &max_width);
1507         compute_border (view, max_width, max_width, &border);
1508
1509         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1510
1511         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1512         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1513
1514         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1515                 requisition->width = 1;
1516         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1517                 requisition->width = 1;
1518                 /* FIXME: This could actually be set on one page docs or docs
1519                  * with a strange aspect ratio. */
1520                 /* requisition->height = 1;*/
1521         }
1522 }
1523
1524 static void
1525 ev_view_size_request_continuous (EvView         *view,
1526                                  GtkRequisition *requisition)
1527 {
1528         int max_width;
1529         int n_pages;
1530         GtkBorder border;
1531
1532
1533         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1534                                      view->scale, &max_width);
1535         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1536         compute_border (view, max_width, max_width, &border);
1537
1538         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1539         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1540
1541         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1542                 requisition->width = 1;
1543         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1544                 requisition->width = 1;
1545                 /* FIXME: This could actually be set on one page docs or docs
1546                  * with a strange aspect ratio. */
1547                 /* requisition->height = 1;*/
1548         }
1549 }
1550
1551 static void
1552 ev_view_size_request_dual_page (EvView         *view,
1553                                 GtkRequisition *requisition)
1554 {
1555         GtkBorder border;
1556         gint width, height;
1557
1558         /* Find the largest of the two. */
1559         ev_page_cache_get_size (view->page_cache,
1560                                 view->current_page,
1561                                 view->rotation,
1562                                 view->scale,
1563                                 &width, &height);
1564         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1565                 gint width_2, height_2;
1566                 ev_page_cache_get_size (view->page_cache,
1567                                         view->current_page + 1,
1568                                         view->rotation,
1569                                         view->scale,
1570                                         &width_2, &height_2);
1571                 if (width_2 > width) {
1572                         width = width_2;
1573                         height = height_2;
1574                 }
1575         }
1576         compute_border (view, width, height, &border);
1577
1578         requisition->width = ((width + border.left + border.right) * 2) +
1579                 (view->spacing * 3);
1580         requisition->height = (height + border.top + border.bottom) +
1581                 (view->spacing * 2);
1582
1583         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1584                 requisition->width = 1;
1585         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1586                 requisition->width = 1;
1587                 requisition->height = 1;
1588         }
1589 }
1590
1591 static void
1592 ev_view_size_request_single_page (EvView         *view,
1593                                   GtkRequisition *requisition)
1594 {
1595         GtkBorder border;
1596         gint width, height;
1597
1598         ev_page_cache_get_size (view->page_cache,
1599                                 view->current_page,
1600                                 view->rotation,
1601                                 view->scale,
1602                                 &width, &height);
1603         compute_border (view, width, height, &border);
1604
1605         requisition->width = width + border.left + border.right + (2 * view->spacing);
1606         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1607
1608         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1609                 requisition->width = 1;
1610                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1611         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1612                 requisition->width = 1;
1613                 requisition->height = 1;
1614         }
1615 }
1616
1617 static void
1618 ev_view_size_request (GtkWidget      *widget,
1619                       GtkRequisition *requisition)
1620 {
1621         EvView *view = EV_VIEW (widget);
1622
1623         if (view->document == NULL) {
1624                 requisition->width = 1;
1625                 requisition->height = 1;
1626                 return;
1627         }
1628
1629         if (view->presentation) {
1630                 requisition->width = 1;
1631                 requisition->height = 1;
1632                 return;
1633         }
1634
1635         if (view->continuous && view->dual_page)
1636                 ev_view_size_request_continuous_dual_page (view, requisition);
1637         else if (view->continuous)
1638                 ev_view_size_request_continuous (view, requisition);
1639         else if (view->dual_page)
1640                 ev_view_size_request_dual_page (view, requisition);
1641         else
1642                 ev_view_size_request_single_page (view, requisition);
1643 }
1644
1645 static void
1646 ev_view_size_allocate (GtkWidget      *widget,
1647                        GtkAllocation  *allocation)
1648 {
1649         EvView *view = EV_VIEW (widget);
1650
1651         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1652             view->sizing_mode == EV_SIZING_BEST_FIT) {
1653
1654                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1655
1656                 ev_view_size_request (widget, &widget->requisition);
1657         }
1658
1659         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1660         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1661
1662         if (view->document)
1663                 view_update_range_and_current_page (view);
1664
1665         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1666         view->pending_resize = FALSE;
1667
1668         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1669 }
1670
1671 static void
1672 ev_view_realize (GtkWidget *widget)
1673 {
1674         EvView *view = EV_VIEW (widget);
1675         GdkWindowAttr attributes;
1676
1677         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1678
1679
1680         attributes.window_type = GDK_WINDOW_CHILD;
1681         attributes.wclass = GDK_INPUT_OUTPUT;
1682         attributes.visual = gtk_widget_get_visual (widget);
1683         attributes.colormap = gtk_widget_get_colormap (widget);
1684
1685         attributes.x = widget->allocation.x;
1686         attributes.y = widget->allocation.y;
1687         attributes.width = widget->allocation.width;
1688         attributes.height = widget->allocation.height;
1689         attributes.event_mask = GDK_EXPOSURE_MASK |
1690                                 GDK_BUTTON_PRESS_MASK |
1691                                 GDK_BUTTON_RELEASE_MASK |
1692                                 GDK_SCROLL_MASK |
1693                                 GDK_KEY_PRESS_MASK |
1694                                 GDK_POINTER_MOTION_MASK |
1695                                 GDK_POINTER_MOTION_HINT_MASK |
1696                                 GDK_ENTER_NOTIFY_MASK |
1697                                 GDK_LEAVE_NOTIFY_MASK;
1698
1699         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1700                                          &attributes,
1701                                          GDK_WA_X | GDK_WA_Y |
1702                                          GDK_WA_COLORMAP |
1703                                          GDK_WA_VISUAL);
1704         gdk_window_set_user_data (widget->window, widget);
1705         widget->style = gtk_style_attach (widget->style, widget->window);
1706
1707         if (view->presentation)
1708                 gdk_window_set_background (widget->window, &widget->style->black);
1709         else
1710                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1711 }
1712
1713 static gboolean
1714 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1715 {
1716         EvView *view = EV_VIEW (widget);
1717         guint state;
1718
1719         state = event->state & gtk_accelerator_get_default_mod_mask ();
1720
1721         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1722                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1723
1724                 if (event->direction == GDK_SCROLL_UP ||
1725                     event->direction == GDK_SCROLL_LEFT) {
1726                         if (ev_view_can_zoom_in (view)) {
1727                                 ev_view_zoom_in (view);
1728                         }
1729                 } else {
1730                         if (ev_view_can_zoom_out (view)) {
1731                                 ev_view_zoom_out (view);
1732                         }
1733                 }
1734
1735                 return TRUE;
1736         }
1737
1738         view->jump_to_find_result = FALSE;
1739         /* Shift+Wheel scrolls the in the perpendicular direction */
1740         if (state & GDK_SHIFT_MASK) {
1741                 if (event->direction == GDK_SCROLL_UP)
1742                         event->direction = GDK_SCROLL_LEFT;
1743                 if (event->direction == GDK_SCROLL_LEFT)
1744                         event->direction = GDK_SCROLL_UP;
1745                 if (event->direction == GDK_SCROLL_DOWN)
1746                         event->direction = GDK_SCROLL_RIGHT;
1747                 if (event->direction == GDK_SCROLL_RIGHT)
1748                         event->direction = GDK_SCROLL_DOWN;
1749
1750                 event->state &= ~GDK_SHIFT_MASK;
1751                 state &= ~GDK_SHIFT_MASK;
1752         }
1753
1754         if (state == 0 && view->presentation) {
1755                 switch (event->direction) {
1756                         case GDK_SCROLL_DOWN:
1757                         case GDK_SCROLL_RIGHT:
1758                                 ev_view_next_page (view);
1759                                 break;
1760                         case GDK_SCROLL_UP:
1761                         case GDK_SCROLL_LEFT:
1762                                 ev_view_previous_page (view);
1763                                 break;
1764                 }
1765
1766                 return TRUE;
1767         }
1768
1769         return FALSE;
1770 }
1771
1772 static EvViewSelection *
1773 find_selection_for_page (EvView *view,
1774                          gint    page)
1775 {
1776         GList *list;
1777
1778         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1779                 EvViewSelection *selection;
1780
1781                 selection = (EvViewSelection *) list->data;
1782
1783                 if (selection->page == page)
1784                         return selection;
1785         }
1786
1787         return NULL;
1788 }
1789
1790 static void
1791 draw_end_presentation_page (EvView       *view,
1792                             GdkRectangle *page_area)
1793 {
1794         PangoLayout *layout;
1795         PangoFontDescription *font_desc;
1796         gchar *markup;
1797         const gchar *text = _("End of presentation. Press Escape to exit.");
1798
1799         if (view->presentation_state != EV_PRESENTATION_END)
1800                 return;
1801
1802         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
1803         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
1804         pango_layout_set_markup (layout, markup, -1);
1805         g_free (markup);
1806
1807         font_desc = pango_font_description_new ();
1808         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
1809         pango_layout_set_font_description (layout, font_desc);
1810
1811         gtk_paint_layout (GTK_WIDGET (view)->style,
1812                           GTK_WIDGET (view)->window,
1813                           GTK_WIDGET_STATE (view),
1814                           FALSE,
1815                           page_area,
1816                           GTK_WIDGET (view),
1817                           NULL,
1818                           page_area->x + 15,
1819                           page_area->y + 15,
1820                           layout);
1821
1822         pango_font_description_free (font_desc);
1823         g_object_unref (layout);
1824 }
1825
1826 static gboolean
1827 ev_view_expose_event (GtkWidget      *widget,
1828                       GdkEventExpose *event)
1829 {
1830         EvView *view = EV_VIEW (widget);
1831         int i;
1832
1833         if (view->presentation) {
1834                 switch (view->presentation_state) {
1835                         case EV_PRESENTATION_END: {
1836                                 GdkRectangle area = {0};
1837
1838                                 area.width = widget->allocation.width;
1839                                 area.height = widget->allocation.height;
1840
1841                                 draw_end_presentation_page (view, &area);
1842                         }
1843                                 return FALSE;
1844                         case EV_PRESENTATION_BLACK:
1845                         case EV_PRESENTATION_WHITE:
1846                                 return FALSE;
1847                         case EV_PRESENTATION_NORMAL:
1848                         default:
1849                                 break;
1850                 }
1851         }
1852
1853         if (view->loading) {
1854                 GdkRectangle area = {0};
1855
1856                 area.width = widget->allocation.width;
1857                 area.height = widget->allocation.height;
1858
1859                 draw_loading_text (view,
1860                                    &area,
1861                                    &(event->area));
1862         }
1863
1864         if (view->document == NULL)
1865                 return FALSE;
1866
1867         for (i = view->start_page; i <= view->end_page; i++) {
1868                 GdkRectangle page_area;
1869                 GtkBorder border;
1870                 gboolean page_ready = TRUE;
1871
1872                 if (!get_page_extents (view, i, &page_area, &border))
1873                         continue;
1874
1875                 page_area.x -= view->scroll_x;
1876                 page_area.y -= view->scroll_y;
1877
1878                 draw_one_page (view, i, &page_area, &border, &(event->area), &page_ready);
1879
1880                 if (page_ready && EV_IS_DOCUMENT_FIND (view->document))
1881                         highlight_find_results (view, i);
1882         }
1883
1884         return FALSE;
1885 }
1886
1887 static gboolean
1888 ev_view_popup_menu (GtkWidget *widget)
1889 {
1890     gint x, y;
1891     EvLink *link;
1892     EvView *view = EV_VIEW (widget);
1893
1894     gtk_widget_get_pointer (widget, &x, &y);
1895     link = ev_view_get_link_at_location (view, x, y);
1896     g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1897     return TRUE;
1898 }
1899
1900 static gboolean
1901 ev_view_button_press_event (GtkWidget      *widget,
1902                             GdkEventButton *event)
1903 {
1904         EvView *view = EV_VIEW (widget);
1905         EvLink *link;
1906
1907         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1908                 gtk_widget_grab_focus (widget);
1909         }
1910
1911         view->pressed_button = event->button;
1912         view->selection_info.in_drag = FALSE;
1913
1914         switch (event->button) {
1915                 case 1:
1916                         if (view->selection_info.selections) {
1917                                 if (location_in_selected_text (view,
1918                                                                event->x + view->scroll_x,
1919                                                                event->y + view->scroll_y)) {
1920                                         view->selection_info.in_drag = TRUE;
1921                                 } else {
1922                                         clear_selection (view);
1923                                 }
1924
1925                                 gtk_widget_queue_draw (widget);
1926                         }
1927
1928                         view->selection_info.start.x = event->x + view->scroll_x;
1929                         view->selection_info.start.y = event->y + view->scroll_y;
1930
1931                         return TRUE;
1932                 case 2:
1933                         /* use root coordinates as reference point because
1934                          * scrolling changes window relative coordinates */
1935                         view->drag_info.start.x = event->x_root;
1936                         view->drag_info.start.y = event->y_root;
1937                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1938                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1939
1940                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1941
1942                         return TRUE;
1943                 case 3:
1944                         link = ev_view_get_link_at_location (view, event->x, event->y);
1945                         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1946                         return TRUE;
1947         }
1948
1949         return FALSE;
1950 }
1951
1952 static void
1953 ev_view_drag_data_get (GtkWidget        *widget,
1954                        GdkDragContext   *context,
1955                        GtkSelectionData *selection_data,
1956                        guint             info,
1957                        guint             time)
1958 {
1959         EvView *view = EV_VIEW (widget);
1960
1961         if (view->selection_info.selections &&
1962             ev_document_can_get_text (view->document)) {
1963                 gchar *text;
1964
1965                 text = get_selected_text (view);
1966
1967                 gtk_selection_data_set_text (selection_data, text, strlen (text));
1968
1969                 g_free (text);
1970         }
1971 }
1972
1973 static gboolean
1974 selection_update_idle_cb (EvView *view)
1975 {
1976         compute_selections (view, &view->selection_info.start, &view->motion);
1977         view->selection_update_id = 0;
1978         return FALSE;
1979 }
1980
1981 static gboolean
1982 selection_scroll_timeout_cb (EvView *view)
1983 {
1984         gint x, y, shift = 0;
1985         GtkWidget *widget = GTK_WIDGET (view);
1986
1987         gtk_widget_get_pointer (widget, &x, &y);
1988
1989         if (y > widget->allocation.height) {
1990                 shift = (y - widget->allocation.height) / 2;
1991         } else if (y < 0) {
1992                 shift = y / 2;
1993         }
1994
1995         if (shift)
1996                 gtk_adjustment_set_value (view->vadjustment,
1997                                           CLAMP (view->vadjustment->value + shift,
1998                                           view->vadjustment->lower,
1999                                           view->vadjustment->upper -
2000                                           view->vadjustment->page_size));
2001
2002         if (x > widget->allocation.width) {
2003                 shift = (x - widget->allocation.width) / 2;
2004         } else if (x < 0) {
2005                 shift = x / 2;
2006         }
2007
2008         if (shift)
2009                 gtk_adjustment_set_value (view->hadjustment,
2010                                           CLAMP (view->hadjustment->value + shift,
2011                                           view->hadjustment->lower,
2012                                           view->hadjustment->upper -
2013                                           view->hadjustment->page_size));
2014
2015         return TRUE;
2016 }
2017
2018 static gboolean
2019 ev_view_motion_notify_event (GtkWidget      *widget,
2020                              GdkEventMotion *event)
2021 {
2022         EvView *view = EV_VIEW (widget);
2023         gint x, y;
2024
2025         if (!view->document)
2026                 return FALSE;
2027
2028         if (event->is_hint || event->window != widget->window) {
2029             gtk_widget_get_pointer (widget, &x, &y);
2030         } else {
2031             x = event->x;
2032             y = event->y;
2033         }
2034
2035         if (view->selection_info.in_drag) {
2036                 if (gtk_drag_check_threshold (widget,
2037                                               view->selection_info.start.x,
2038                                               view->selection_info.start.y,
2039                                               x, y)) {
2040                         GdkDragContext *context;
2041                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
2042
2043                         gtk_target_list_add_text_targets (target_list, 0);
2044
2045                         context = gtk_drag_begin (widget, target_list,
2046                                                   GDK_ACTION_COPY,
2047                                                   1, (GdkEvent *)event);
2048
2049                         view->selection_info.in_drag = FALSE;
2050
2051                         gtk_target_list_unref (target_list);
2052
2053                         return TRUE;
2054                 }
2055         }
2056
2057         /* For the Evince 0.4.x release, we limit selection to un-rotated
2058          * documents only.
2059          */
2060         if (view->pressed_button == 1 && view->rotation == 0) {
2061
2062                 /* Schedule timeout to scroll during selection and additionally
2063                  * scroll once to allow arbitrary speed. */
2064                 if (!view->selection_scroll_id)
2065                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
2066                 else
2067                     selection_scroll_timeout_cb (view);
2068
2069                 view->selection_info.in_selection = TRUE;
2070                 view->motion.x = x + view->scroll_x;
2071                 view->motion.y = y + view->scroll_y;
2072
2073                 /* Queue an idle to handle the motion.  We do this because
2074                  * handling any selection events in the motion could be slower
2075                  * than new motion events reach us.  We always put it in the
2076                  * idle to make sure we catch up and don't visibly lag the
2077                  * mouse. */
2078                 if (!view->selection_update_id)
2079                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
2080
2081                 return TRUE;
2082         } else if (view->pressed_button == 2) {
2083                 if (!view->drag_info.in_drag) {
2084                         gboolean start;
2085
2086                         start = gtk_drag_check_threshold (widget,
2087                                                           view->drag_info.start.x,
2088                                                           view->drag_info.start.y,
2089                                                           event->x_root,
2090                                                           event->y_root);
2091                         view->drag_info.in_drag = start;
2092                 }
2093
2094                 if (view->drag_info.in_drag) {
2095                         int dx, dy;
2096                         gdouble dhadj_value, dvadj_value;
2097
2098                         dx = event->x_root - view->drag_info.start.x;
2099                         dy = event->y_root - view->drag_info.start.y;
2100
2101                         dhadj_value = view->hadjustment->page_size *
2102                                       (gdouble)dx / widget->allocation.width;
2103                         dvadj_value = view->vadjustment->page_size *
2104                                       (gdouble)dy / widget->allocation.height;
2105
2106                         /* clamp scrolling to visible area */
2107                         gtk_adjustment_set_value (view->hadjustment,
2108                                                   MIN(view->drag_info.hadj - dhadj_value,
2109                                                       view->hadjustment->upper -
2110                                                       view->hadjustment->page_size));
2111                         gtk_adjustment_set_value (view->vadjustment,
2112                                                   MIN(view->drag_info.vadj - dvadj_value,
2113                                                       view->vadjustment->upper -
2114                                                       view->vadjustment->page_size));
2115
2116                         return TRUE;
2117                 }
2118         } else if (view->pressed_button <= 0) {
2119                 handle_link_over_xy (view, x, y);
2120                 return TRUE;
2121         }
2122
2123         return FALSE;
2124 }
2125
2126 static gboolean
2127 ev_view_button_release_event (GtkWidget      *widget,
2128                               GdkEventButton *event)
2129 {
2130         EvView *view = EV_VIEW (widget);
2131         EvLink *link;
2132
2133         if (view->pressed_button == 2) {
2134                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2135         }
2136
2137         if (view->document && view->pressed_button == 1) {
2138                 link = ev_view_get_link_at_location (view, event->x, event->y);
2139         } else {
2140                 link = NULL;
2141         }
2142
2143         view->pressed_button = -1;
2144         view->drag_info.in_drag = FALSE;
2145
2146         if (view->selection_scroll_id) {
2147             g_source_remove (view->selection_scroll_id);
2148             view->selection_scroll_id = 0;
2149         }
2150         if (view->selection_update_id) {
2151             g_source_remove (view->selection_update_id);
2152             view->selection_update_id = 0;
2153         }
2154
2155         if (view->selection_info.selections) {
2156                 ev_view_update_primary_selection (view);
2157
2158                 if (view->selection_info.in_drag) {
2159                         clear_selection (view);
2160                         gtk_widget_queue_draw (widget);
2161                 }
2162
2163                 view->selection_info.in_drag = FALSE;
2164         } else if (link) {
2165                 ev_view_handle_link (view, link);
2166         } else if (view->presentation) {
2167                 switch (event->button) {
2168                         case 1:
2169                                 ev_view_next_page (view);
2170                                 return TRUE;
2171                         case 3:
2172                                 ev_view_previous_page (view);
2173                                 return TRUE;
2174                 }
2175         }
2176
2177         return FALSE;
2178 }
2179
2180 /* Goto Window */
2181 /* Cut and paste from gtkwindow.c */
2182 static void
2183 send_focus_change (GtkWidget *widget,
2184                    gboolean   in)
2185 {
2186         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
2187
2188         g_object_ref (widget);
2189
2190         if (in)
2191                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2192         else
2193                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
2194
2195         fevent->focus_change.type = GDK_FOCUS_CHANGE;
2196         fevent->focus_change.window = g_object_ref (widget->window);
2197         fevent->focus_change.in = in;
2198
2199         gtk_widget_event (widget, fevent);
2200
2201         g_object_notify (G_OBJECT (widget), "has-focus");
2202
2203         g_object_unref (widget);
2204         gdk_event_free (fevent);
2205 }
2206
2207 static void
2208 ev_view_goto_window_hide (EvView *view)
2209 {
2210         /* send focus-in event */
2211         send_focus_change (view->goto_entry, FALSE);
2212         gtk_widget_hide (view->goto_window);
2213         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
2214 }
2215
2216 static gboolean
2217 ev_view_goto_window_delete_event (GtkWidget   *widget,
2218                                   GdkEventAny *event,
2219                                   EvView      *view)
2220 {
2221         ev_view_goto_window_hide (view);
2222
2223         return TRUE;
2224 }
2225
2226 static gboolean
2227 key_is_numeric (guint keyval)
2228 {
2229         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
2230                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
2231 }
2232
2233 static gboolean
2234 ev_view_goto_window_key_press_event (GtkWidget   *widget,
2235                                      GdkEventKey *event,
2236                                      EvView      *view)
2237 {
2238         switch (event->keyval) {
2239                 case GDK_Escape:
2240                 case GDK_Tab:
2241                 case GDK_KP_Tab:
2242                 case GDK_ISO_Left_Tab:
2243                         ev_view_goto_window_hide (view);
2244                         return TRUE;
2245                 case GDK_Return:
2246                 case GDK_KP_Enter:
2247                 case GDK_ISO_Enter:
2248                         return FALSE;
2249                 default:
2250                         if (!key_is_numeric (event->keyval))
2251                                 return TRUE;
2252         }
2253
2254         return FALSE;
2255 }
2256
2257 static gboolean
2258 ev_view_goto_window_button_press_event (GtkWidget      *widget,
2259                                         GdkEventButton *event,
2260                                         EvView         *view)
2261 {
2262         ev_view_goto_window_hide (view);
2263
2264         return TRUE;
2265 }
2266
2267 static void
2268 ev_view_goto_entry_activate (GtkEntry *entry,
2269                              EvView   *view)
2270 {
2271         const gchar *text;
2272         gint         page;
2273
2274         text = gtk_entry_get_text (entry);
2275         page = atoi (text) - 1;
2276
2277         ev_view_goto_window_hide (view);
2278
2279         if (page >= 0 &&
2280             page < ev_page_cache_get_n_pages (view->page_cache))
2281                 ev_page_cache_set_current_page (view->page_cache, page);
2282 }
2283
2284 static void
2285 ev_view_goto_window_create (EvView *view)
2286 {
2287         GtkWidget *frame, *hbox, *toplevel, *label;
2288
2289         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
2290
2291         if (view->goto_window) {
2292                 if (GTK_WINDOW (toplevel)->group)
2293                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2294                                                      GTK_WINDOW (view->goto_window));
2295                 else if (GTK_WINDOW (view->goto_window)->group)
2296                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
2297                                                         GTK_WINDOW (view->goto_window));
2298                 return;
2299         }
2300
2301         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
2302
2303         if (GTK_WINDOW (toplevel)->group)
2304                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
2305                                              GTK_WINDOW (view->goto_window));
2306
2307         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
2308
2309         g_signal_connect (view->goto_window, "delete_event",
2310                           G_CALLBACK (ev_view_goto_window_delete_event),
2311                           view);
2312         g_signal_connect (view->goto_window, "key_press_event",
2313                           G_CALLBACK (ev_view_goto_window_key_press_event),
2314                           view);
2315         g_signal_connect (view->goto_window, "button_press_event",
2316                           G_CALLBACK (ev_view_goto_window_button_press_event),
2317                           view);
2318
2319         frame = gtk_frame_new (NULL);
2320         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
2321         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
2322         gtk_widget_show (frame);
2323
2324         hbox = gtk_hbox_new (FALSE, 0);
2325         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
2326         gtk_container_add (GTK_CONTAINER (frame), hbox);
2327         gtk_widget_show (hbox);
2328
2329         label = gtk_label_new(_("Jump to page:"));
2330         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
2331         gtk_widget_show (label);
2332         gtk_widget_realize (label);
2333
2334         view->goto_entry = gtk_entry_new ();
2335         g_signal_connect (view->goto_entry, "activate",
2336                           G_CALLBACK (ev_view_goto_entry_activate),
2337                           view);
2338         gtk_box_pack_start_defaults (GTK_BOX (hbox), view->goto_entry);
2339         gtk_widget_show (view->goto_entry);
2340         gtk_widget_realize (view->goto_entry);
2341 }
2342
2343 static void
2344 ev_view_goto_entry_grab_focus (EvView *view)
2345 {
2346         GtkWidgetClass *entry_parent_class;
2347
2348         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
2349         (entry_parent_class->grab_focus) (view->goto_entry);
2350
2351         send_focus_change (view->goto_entry, TRUE);
2352 }
2353
2354 static void
2355 ev_view_goto_window_send_key_event (EvView   *view,
2356                                     GdkEvent *event)
2357 {
2358         GdkEventKey *new_event;
2359         GdkScreen   *screen;
2360
2361         /* Move goto window off screen */
2362         screen = gtk_widget_get_screen (GTK_WIDGET (view));
2363         gtk_window_move (GTK_WINDOW (view->goto_window),
2364                          gdk_screen_get_width (screen) + 1,
2365                          gdk_screen_get_height (screen) + 1);
2366         gtk_widget_show (view->goto_window);
2367
2368         new_event = (GdkEventKey *) gdk_event_copy (event);
2369         g_object_unref (new_event->window);
2370         new_event->window = g_object_ref (view->goto_window->window);
2371         gtk_widget_realize (view->goto_window);
2372
2373         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
2374         gdk_event_free ((GdkEvent *)new_event);
2375         gtk_widget_hide (view->goto_window);
2376 }
2377
2378 static gboolean
2379 ev_view_key_press_event (GtkWidget   *widget,
2380                          GdkEventKey *event)
2381 {
2382         EvView *view = EV_VIEW (widget);
2383         EvPresentationState current;
2384
2385         if (!view->presentation ||
2386             view->presentation_state == EV_PRESENTATION_END)
2387                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2388
2389
2390         current = view->presentation_state;
2391
2392         switch (event->keyval) {
2393                 case GDK_b:
2394                 case GDK_B:
2395                         view->presentation_state =
2396                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
2397                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
2398                         break;
2399                 case GDK_w:
2400                 case GDK_W:
2401                         view->presentation_state =
2402                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
2403                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
2404                         break;
2405                 default:
2406                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
2407                             view->presentation_state == EV_PRESENTATION_WHITE) {
2408                                 view->presentation_state = EV_PRESENTATION_NORMAL;
2409                         }
2410         }
2411
2412         if (current == view->presentation_state) {
2413                 if (ev_page_cache_get_n_pages (view->page_cache) > 1 &&
2414                     key_is_numeric (event->keyval)) {
2415                         gint x, y;
2416
2417                         ev_view_goto_window_create (view);
2418                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
2419                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
2420                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
2421                         gtk_widget_show (view->goto_window);
2422                         ev_view_goto_entry_grab_focus (view);
2423
2424                         return TRUE;
2425                 }
2426
2427                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2428         }
2429
2430         switch (view->presentation_state) {
2431                 case EV_PRESENTATION_NORMAL:
2432                 case EV_PRESENTATION_BLACK:
2433                         gdk_window_set_background (widget->window,
2434                                                    &widget->style->black);
2435                         break;
2436                 case EV_PRESENTATION_WHITE:
2437                         gdk_window_set_background (widget->window,
2438                                                    &widget->style->white);
2439                         break;
2440                 default:
2441                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
2442         }
2443
2444         gtk_widget_queue_draw (widget);
2445         return TRUE;
2446 }
2447
2448 static gint
2449 ev_view_focus_in (GtkWidget     *widget,
2450                   GdkEventFocus *event)
2451 {
2452         if (EV_VIEW (widget)->pixbuf_cache)
2453                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2454         gtk_widget_queue_draw (widget);
2455
2456         return FALSE;
2457 }
2458
2459 static gint
2460 ev_view_focus_out (GtkWidget     *widget,
2461                      GdkEventFocus *event)
2462 {
2463         if (EV_VIEW (widget)->goto_window)
2464                 ev_view_goto_window_hide (EV_VIEW (widget));
2465
2466         if (EV_VIEW (widget)->pixbuf_cache)
2467                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2468         gtk_widget_queue_draw (widget);
2469
2470         return FALSE;
2471 }
2472
2473 static gboolean
2474 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2475 {
2476         EvView *view = EV_VIEW (widget);
2477
2478         ev_view_set_status (view, NULL);
2479
2480         if (view->cursor == EV_VIEW_CURSOR_LINK ||
2481             view->cursor == EV_VIEW_CURSOR_IBEAM)
2482                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
2483
2484         if (view->link_tooltip) {
2485                 view->hovered_link = NULL;
2486                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
2487         }
2488
2489         return FALSE;
2490 }
2491
2492 static gboolean
2493 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
2494 {
2495         EvView *view = EV_VIEW (widget);
2496
2497         handle_link_over_xy (view, event->x, event->y);
2498
2499         return FALSE;
2500 }
2501
2502 static void
2503 ev_view_style_set (GtkWidget *widget,
2504                    GtkStyle  *old_style)
2505 {
2506         if (EV_VIEW (widget)->pixbuf_cache)
2507                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2508
2509         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2510 }
2511
2512 /*** Drawing ***/
2513
2514 static guint32
2515 ev_gdk_color_to_rgb (const GdkColor *color)
2516 {
2517   guint32 result;
2518   result = (0xff0000 | (color->red & 0xff00));
2519   result <<= 8;
2520   result |= ((color->green & 0xff00) | (color->blue >> 8));
2521   return result;
2522 }
2523
2524 static void
2525 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2526                  const GdkRectangle *rect, guchar alpha)
2527 {
2528         GdkGC *gc;
2529         GdkPixbuf *pixbuf;
2530         GdkColor *fill_color_gdk;
2531         guint fill_color;
2532
2533         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2534         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2535
2536         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2537                                  rect->width, rect->height);
2538         gdk_pixbuf_fill (pixbuf, fill_color);
2539
2540         gdk_draw_pixbuf (window, NULL, pixbuf,
2541                          0, 0,
2542                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2543                          rect->width, rect->height,
2544                          GDK_RGB_DITHER_NONE,
2545                          0, 0);
2546
2547         g_object_unref (pixbuf);
2548
2549         gc = gdk_gc_new (window);
2550         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2551         gdk_draw_rectangle (window, gc, FALSE,
2552                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2553                             rect->width - 1,
2554                             rect->height - 1);
2555         g_object_unref (gc);
2556
2557         gdk_color_free (fill_color_gdk);
2558 }
2559
2560
2561 static void
2562 highlight_find_results (EvView *view, int page)
2563 {
2564         EvDocumentFind *find;
2565         int i, results = 0;
2566
2567         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2568
2569         find = EV_DOCUMENT_FIND (view->document);
2570
2571         results = ev_document_find_get_n_results (find, page);
2572
2573         for (i = 0; i < results; i++) {
2574                 EvRectangle rectangle;
2575                 GdkRectangle view_rectangle;
2576                 guchar alpha;
2577
2578                 if (i == view->find_result && page == view->current_page) {
2579                         alpha = 0x90;
2580                 } else {
2581                         alpha = 0x20;
2582                 }
2583
2584                 ev_document_find_get_result (find, page, i, &rectangle);
2585                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2586                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2587                                  &view_rectangle, alpha);
2588         }
2589 }
2590
2591 static void
2592 draw_loading_text (EvView       *view,
2593                    GdkRectangle *page_area,
2594                    GdkRectangle *expose_area)
2595 {
2596         const char *loading_text;
2597         PangoLayout *layout;
2598         PangoFontDescription *font_desc;
2599         PangoRectangle logical_rect;
2600         double real_scale;
2601         int target_width;
2602
2603         /* Don't annoy users with loading messages during presentations.
2604          * FIXME: Temporary "workaround" for
2605          * http://bugzilla.gnome.org/show_bug.cgi?id=320352 */
2606         if (view->presentation)
2607                 return;
2608
2609         loading_text = _("Loading...");
2610
2611         ev_document_fc_mutex_lock ();
2612
2613         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2614
2615         font_desc = pango_font_description_new ();
2616
2617
2618         /* We set the font to be 10 points, get the size, and scale appropriately */
2619         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2620         pango_layout_set_font_description (layout, font_desc);
2621         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2622
2623         /* Make sure we fit the middle of the page */
2624         target_width = MAX (page_area->width / 2, 1);
2625         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2626         pango_font_description_set_size (font_desc, (int)real_scale);
2627         pango_layout_set_font_description (layout, font_desc);
2628         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2629
2630         gtk_paint_layout (GTK_WIDGET (view)->style,
2631                           GTK_WIDGET (view)->window,
2632                           GTK_WIDGET_STATE (view),
2633                           FALSE,
2634                           page_area,
2635                           GTK_WIDGET (view),
2636                           NULL,
2637                           page_area->x + (target_width/2),
2638                           page_area->y + (page_area->height - logical_rect.height) / 2,
2639                           layout);
2640
2641         pango_font_description_free (font_desc);
2642         g_object_unref (layout);
2643
2644         ev_document_fc_mutex_unlock ();
2645 }
2646
2647 static void
2648 draw_one_page (EvView          *view,
2649                gint             page,
2650                GdkRectangle    *page_area,
2651                GtkBorder       *border,
2652                GdkRectangle    *expose_area,
2653                gboolean        *page_ready)
2654 {
2655         gint width, height;
2656         GdkPixbuf *current_pixbuf;
2657         GdkRectangle overlap;
2658         GdkRectangle real_page_area;
2659         EvViewSelection *selection;
2660         gint current_page;
2661
2662         g_assert (view->document);
2663
2664         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2665                 return;
2666
2667         current_page = ev_page_cache_get_current_page (view->page_cache);
2668         selection = find_selection_for_page (view, page);
2669         ev_page_cache_get_size (view->page_cache,
2670                                 page, view->rotation,
2671                                 view->scale,
2672                                 &width, &height);
2673         /* Render the document itself */
2674         real_page_area = *page_area;
2675
2676         real_page_area.x += border->left;
2677         real_page_area.y += border->top;
2678         real_page_area.width -= (border->left + border->right);
2679         real_page_area.height -= (border->top + border->bottom);
2680         *page_ready = TRUE;
2681
2682         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2683                                          GTK_WIDGET (view),
2684                                          page_area, border,
2685                                          page == current_page);
2686
2687         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2688                 GdkPixbuf *selection_pixbuf = NULL;
2689                 GdkPixbuf *scaled_image;
2690                 GdkPixbuf *scaled_selection;
2691
2692                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2693
2694                 /* Get the selection pixbuf iff we have something to draw */
2695                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2696                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2697                                                                                  page,
2698                                                                                  view->scale,
2699                                                                                  NULL);
2700
2701                 if (current_pixbuf == NULL)
2702                         scaled_image = NULL;
2703                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2704                          height == gdk_pixbuf_get_height (current_pixbuf))
2705                         scaled_image = g_object_ref (current_pixbuf);
2706                 else
2707                         /* FIXME: We don't want to scale the whole area, just the right
2708                          * area of it */
2709                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2710                                                                 width, height,
2711                                                                 GDK_INTERP_NEAREST);
2712
2713                 if (selection_pixbuf == NULL)
2714                         scaled_selection = NULL;
2715                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2716                          height == gdk_pixbuf_get_height (selection_pixbuf))
2717                         scaled_selection = g_object_ref (selection_pixbuf);
2718                 else
2719                         /* FIXME: We don't want to scale the whole area, just the right
2720                          * area of it */
2721                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2722                                                                     width, height,
2723                                                                     GDK_INTERP_NEAREST);
2724
2725                 if (scaled_image) {
2726                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2727                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2728                                          scaled_image,
2729                                          overlap.x - real_page_area.x,
2730                                          overlap.y - real_page_area.y,
2731                                          overlap.x, overlap.y,
2732                                          overlap.width, overlap.height,
2733                                          GDK_RGB_DITHER_NORMAL,
2734                                          0, 0);
2735                         g_object_unref (scaled_image);
2736                 } else {
2737                         draw_loading_text (view,
2738                                            &real_page_area,
2739                                            expose_area);
2740                         *page_ready = FALSE;
2741                 }
2742
2743                 if (scaled_selection) {
2744                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2745                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2746                                          scaled_selection,
2747                                          overlap.x - real_page_area.x,
2748                                          overlap.y - real_page_area.y,
2749                                          overlap.x, overlap.y,
2750                                          overlap.width, overlap.height,
2751                                          GDK_RGB_DITHER_NORMAL,
2752                                          0, 0);
2753                         g_object_unref (scaled_selection);
2754                 }
2755         }
2756 }
2757
2758 /*** GObject functions ***/
2759
2760 static void
2761 ev_view_finalize (GObject *object)
2762 {
2763         EvView *view = EV_VIEW (object);
2764
2765         LOG ("Finalize");
2766
2767         g_free (view->status);
2768         g_free (view->find_status);
2769
2770         clear_selection (view);
2771
2772         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2773 }
2774
2775 static void
2776 ev_view_destroy (GtkObject *object)
2777 {
2778         EvView *view = EV_VIEW (object);
2779
2780         if (view->document) {
2781                 g_object_unref (view->document);
2782                 view->document = NULL;
2783         }
2784
2785         if (view->pixbuf_cache) {
2786                 g_object_unref (view->pixbuf_cache);
2787                 view->pixbuf_cache = NULL;
2788         }
2789
2790         if (view->link_tooltip) {
2791                 gtk_widget_destroy (view->link_tooltip);
2792                 view->link_tooltip = NULL;
2793         }
2794
2795         if (view->goto_window) {
2796                 gtk_widget_destroy (view->goto_window);
2797                 view->goto_window = NULL;
2798                 view->goto_entry = NULL;
2799         }
2800
2801         if (view->selection_scroll_id) {
2802             g_source_remove (view->selection_scroll_id);
2803             view->selection_scroll_id = 0;
2804         }
2805
2806         if (view->selection_update_id) {
2807             g_source_remove (view->selection_update_id);
2808             view->selection_update_id = 0;
2809         }
2810
2811         ev_view_set_scroll_adjustments (view, NULL, NULL);
2812
2813         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
2814 }
2815
2816 static void
2817 ev_view_set_property (GObject      *object,
2818                       guint         prop_id,
2819                       const GValue *value,
2820                       GParamSpec   *pspec)
2821 {
2822         EvView *view = EV_VIEW (object);
2823
2824         switch (prop_id) {
2825                 case PROP_CONTINUOUS:
2826                         ev_view_set_continuous (view, g_value_get_boolean (value));
2827                         break;
2828                 case PROP_DUAL_PAGE:
2829                         ev_view_set_dual_page (view, g_value_get_boolean (value));
2830                         break;
2831                 case PROP_FULLSCREEN:
2832                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
2833                         break;
2834                 case PROP_PRESENTATION:
2835                         ev_view_set_presentation (view, g_value_get_boolean (value));
2836                         break;
2837                 case PROP_SIZING_MODE:
2838                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
2839                         break;
2840                 case PROP_ZOOM:
2841                         ev_view_set_zoom (view, g_value_get_double (value), FALSE);
2842                         break;
2843                 case PROP_ROTATION:
2844                         ev_view_set_rotation (view, g_value_get_int (value));
2845                         break;
2846                 default:
2847                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2848         }
2849 }
2850
2851 static AtkObject *
2852 ev_view_get_accessible (GtkWidget *widget)
2853 {
2854         static gboolean first_time = TRUE;
2855
2856         if (first_time) {
2857                 AtkObjectFactory *factory;
2858                 AtkRegistry *registry;
2859                 GType derived_type;
2860                 GType derived_atk_type;
2861
2862                 /*
2863                  * Figure out whether accessibility is enabled by looking at the
2864                  * type of the accessible object which would be created for
2865                  * the parent type of EvView.
2866                  */
2867                 derived_type = g_type_parent (EV_TYPE_VIEW);
2868
2869                 registry = atk_get_default_registry ();
2870                 factory = atk_registry_get_factory (registry,
2871                                                     derived_type);
2872                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
2873                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
2874                         atk_registry_set_factory_type (registry,
2875                                                        EV_TYPE_VIEW,
2876                                                        ev_view_accessible_factory_get_type ());
2877                 first_time = FALSE;
2878         }
2879         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
2880 }
2881
2882 static void
2883 ev_view_get_property (GObject *object,
2884                       guint prop_id,
2885                       GValue *value,
2886                       GParamSpec *pspec)
2887 {
2888         EvView *view = EV_VIEW (object);
2889
2890         switch (prop_id) {
2891                 case PROP_STATUS:
2892                         g_value_set_string (value, view->status);
2893                         break;
2894                 case PROP_FIND_STATUS:
2895                         g_value_set_string (value, view->status);
2896                         break;
2897                 case PROP_CONTINUOUS:
2898                         g_value_set_boolean (value, view->continuous);
2899                         break;
2900                 case PROP_DUAL_PAGE:
2901                         g_value_set_boolean (value, view->dual_page);
2902                         break;
2903                 case PROP_FULLSCREEN:
2904                         g_value_set_boolean (value, view->fullscreen);
2905                         break;
2906                 case PROP_PRESENTATION:
2907                         g_value_set_boolean (value, view->presentation);
2908                         break;
2909                 case PROP_SIZING_MODE:
2910                         g_value_set_enum (value, view->sizing_mode);
2911                         break;
2912                 case PROP_ZOOM:
2913                         g_value_set_double (value, view->scale);
2914                         break;
2915                 case PROP_ROTATION:
2916                         g_value_set_int (value, view->rotation);
2917                         break;
2918                 case PROP_HAS_SELECTION:
2919                         g_value_set_boolean (value,
2920                                              view->selection_info.selections != NULL);
2921                         break;
2922                 default:
2923                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2924         }
2925 }
2926
2927 static void
2928 ev_view_class_init (EvViewClass *class)
2929 {
2930         GObjectClass *object_class = G_OBJECT_CLASS (class);
2931         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
2932         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
2933         GtkBindingSet *binding_set;
2934
2935         object_class->finalize = ev_view_finalize;
2936         object_class->set_property = ev_view_set_property;
2937         object_class->get_property = ev_view_get_property;
2938
2939         widget_class->expose_event = ev_view_expose_event;
2940         widget_class->button_press_event = ev_view_button_press_event;
2941         widget_class->motion_notify_event = ev_view_motion_notify_event;
2942         widget_class->button_release_event = ev_view_button_release_event;
2943         widget_class->key_press_event = ev_view_key_press_event;
2944         widget_class->focus_in_event = ev_view_focus_in;
2945         widget_class->focus_out_event = ev_view_focus_out;
2946         widget_class->get_accessible = ev_view_get_accessible;
2947         widget_class->size_request = ev_view_size_request;
2948         widget_class->size_allocate = ev_view_size_allocate;
2949         widget_class->realize = ev_view_realize;
2950         widget_class->scroll_event = ev_view_scroll_event;
2951         widget_class->enter_notify_event = ev_view_enter_notify_event;
2952         widget_class->leave_notify_event = ev_view_leave_notify_event;
2953         widget_class->style_set = ev_view_style_set;
2954         widget_class->drag_data_get = ev_view_drag_data_get;
2955         widget_class->popup_menu = ev_view_popup_menu;
2956         gtk_object_class->destroy = ev_view_destroy;
2957
2958         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
2959         class->binding_activated = ev_view_scroll;
2960
2961         widget_class->set_scroll_adjustments_signal =
2962             g_signal_new ("set-scroll-adjustments",
2963                           G_OBJECT_CLASS_TYPE (object_class),
2964                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2965                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
2966                           NULL, NULL,
2967                           ev_marshal_VOID__OBJECT_OBJECT,
2968                           G_TYPE_NONE, 2,
2969                           GTK_TYPE_ADJUSTMENT,
2970                           GTK_TYPE_ADJUSTMENT);
2971
2972         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
2973                          G_TYPE_FROM_CLASS (object_class),
2974                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2975                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
2976                          NULL, NULL,
2977                          ev_marshal_VOID__ENUM_BOOLEAN,
2978                          G_TYPE_NONE, 2,
2979                          GTK_TYPE_SCROLL_TYPE,
2980                          G_TYPE_BOOLEAN);
2981
2982         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
2983                          G_TYPE_FROM_CLASS (object_class),
2984                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2985                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
2986                          NULL, NULL,
2987                          ev_marshal_VOID__VOID,
2988                          G_TYPE_NONE, 0, G_TYPE_NONE);
2989         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
2990                          G_TYPE_FROM_CLASS (object_class),
2991                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2992                          G_STRUCT_OFFSET (EvViewClass, external_link),
2993                          NULL, NULL,
2994                          g_cclosure_marshal_VOID__OBJECT,
2995                          G_TYPE_NONE, 1,
2996                          G_TYPE_OBJECT);
2997         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
2998                          G_TYPE_FROM_CLASS (object_class),
2999                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
3000                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
3001                          NULL, NULL,
3002                          g_cclosure_marshal_VOID__OBJECT,
3003                          G_TYPE_NONE, 1,
3004                          G_TYPE_OBJECT);
3005
3006         g_object_class_install_property (object_class,
3007                                          PROP_STATUS,
3008                                          g_param_spec_string ("status",
3009                                                               "Status Message",
3010                                                               "The status message",
3011                                                               NULL,
3012                                                               G_PARAM_READABLE));
3013
3014         g_object_class_install_property (object_class,
3015                                          PROP_FIND_STATUS,
3016                                          g_param_spec_string ("find-status",
3017                                                               "Find Status Message",
3018                                                               "The find status message",
3019                                                               NULL,
3020                                                               G_PARAM_READABLE));
3021
3022         g_object_class_install_property (object_class,
3023                                          PROP_CONTINUOUS,
3024                                          g_param_spec_boolean ("continuous",
3025                                                                "Continuous",
3026                                                                "Continuous scrolling mode",
3027                                                                TRUE,
3028                                                                G_PARAM_READWRITE));
3029
3030         g_object_class_install_property (object_class,
3031                                          PROP_DUAL_PAGE,
3032                                          g_param_spec_boolean ("dual-page",
3033                                                                "Dual Page",
3034                                                                "Two pages visible at once",
3035                                                                FALSE,
3036                                                                G_PARAM_READWRITE));
3037         g_object_class_install_property (object_class,
3038                                          PROP_FULLSCREEN,
3039                                          g_param_spec_boolean ("fullscreen",
3040                                                                "Full Screen",
3041                                                                "Draw page in a fullscreen fashion",
3042                                                                FALSE,
3043                                                                G_PARAM_READWRITE));
3044         g_object_class_install_property (object_class,
3045                                          PROP_PRESENTATION,
3046                                          g_param_spec_boolean ("presentation",
3047                                                                "Presentation",
3048                                                                "Draw page in presentation mode",
3049                                                                TRUE,
3050                                                                G_PARAM_READWRITE));
3051
3052         g_object_class_install_property (object_class,
3053                                          PROP_SIZING_MODE,
3054                                          g_param_spec_enum ("sizing-mode",
3055                                                             "Sizing Mode",
3056                                                             "Sizing Mode",
3057                                                             EV_TYPE_SIZING_MODE,
3058                                                             EV_SIZING_FIT_WIDTH,
3059                                                             G_PARAM_READWRITE));
3060
3061         g_object_class_install_property (object_class,
3062                                          PROP_ZOOM,
3063                                          g_param_spec_double ("zoom",
3064                                                               "Zoom factor",
3065                                                                "Zoom factor",
3066                                                                MIN_SCALE,
3067                                                                MAX_SCALE,
3068                                                                1.0,
3069                                                                G_PARAM_READWRITE));
3070         g_object_class_install_property (object_class,
3071                                          PROP_ROTATION,
3072                                          g_param_spec_double ("rotation",
3073                                                               "Rotation",
3074                                                                "Rotation",
3075                                                                0,
3076                                                                360,
3077                                                                0,
3078                                                                G_PARAM_READWRITE));
3079         g_object_class_install_property (object_class,
3080                                          PROP_HAS_SELECTION,
3081                                          g_param_spec_boolean ("has-selection",
3082                                                                "Has selection",
3083                                                                "The view has selections",
3084                                                                FALSE,
3085                                                                G_PARAM_READABLE));
3086
3087         binding_set = gtk_binding_set_by_class (class);
3088
3089         add_scroll_binding_keypad (binding_set, GDK_Left,  0, EV_SCROLL_STEP_BACKWARD, TRUE);
3090         add_scroll_binding_keypad (binding_set, GDK_Right, 0, EV_SCROLL_STEP_FORWARD,  TRUE);
3091         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, TRUE);
3092         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  TRUE);
3093         add_scroll_binding_keypad (binding_set, GDK_Up,    0, EV_SCROLL_STEP_BACKWARD, FALSE);
3094         add_scroll_binding_keypad (binding_set, GDK_Down,  0, EV_SCROLL_STEP_FORWARD,  FALSE);
3095         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, EV_SCROLL_STEP_DOWN, FALSE);
3096         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, EV_SCROLL_STEP_UP,  FALSE);
3097 }
3098
3099 static void
3100 ev_view_init (EvView *view)
3101 {
3102         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
3103
3104         view->spacing = 5;
3105         view->scale = 1.0;
3106         view->current_page = 0;
3107         view->pressed_button = -1;
3108         view->cursor = EV_VIEW_CURSOR_NORMAL;
3109         view->drag_info.in_drag = FALSE;
3110         view->selection_info.selections = NULL;
3111         view->selection_info.in_selection = FALSE;
3112         view->selection_info.in_drag = FALSE;
3113         view->selection_mode = EV_VIEW_SELECTION_TEXT;
3114         view->continuous = TRUE;
3115         view->dual_page = FALSE;
3116         view->presentation = FALSE;
3117         view->presentation_state = EV_PRESENTATION_NORMAL;
3118         view->fullscreen = FALSE;
3119         view->sizing_mode = EV_SIZING_FIT_WIDTH;
3120         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
3121         view->jump_to_find_result = TRUE;
3122 }
3123
3124 /*** Callbacks ***/
3125
3126 static void
3127 find_changed_cb (EvDocument *document, int page, EvView *view)
3128 {
3129         double percent;
3130         int n_pages;
3131
3132         percent = ev_document_find_get_progress
3133                         (EV_DOCUMENT_FIND (view->document));
3134         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3135
3136         if (view->jump_to_find_result == TRUE) {
3137                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
3138                 jump_to_find_result (view);
3139         }
3140         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
3141         if (view->current_page == page)
3142                 gtk_widget_queue_draw (GTK_WIDGET (view));
3143 }
3144
3145 static void
3146 job_finished_cb (EvPixbufCache *pixbuf_cache,
3147                  EvView        *view)
3148 {
3149         gtk_widget_queue_draw (GTK_WIDGET (view));
3150 }
3151
3152 static void
3153 page_changed_cb (EvPageCache *page_cache,
3154                  int          new_page,
3155                  EvView      *view)
3156 {
3157         if (view->current_page != new_page) {
3158                 view->current_page = new_page;
3159                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3160                 gtk_widget_queue_resize (GTK_WIDGET (view));
3161         } else {
3162                 gtk_widget_queue_draw (GTK_WIDGET (view));
3163         }
3164
3165         if (EV_IS_DOCUMENT_FIND (view->document)) {
3166                 view->find_result = 0;
3167                 update_find_status_message (view, TRUE);
3168         }
3169 }
3170
3171 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
3172                                          EvView *view)
3173 {
3174         int dx = 0, dy = 0;
3175
3176         if (! GTK_WIDGET_REALIZED (view))
3177                 return;
3178
3179         if (view->hadjustment) {
3180                 dx = view->scroll_x - (int) view->hadjustment->value;
3181                 view->scroll_x = (int) view->hadjustment->value;
3182         } else {
3183                 view->scroll_x = 0;
3184         }
3185
3186         if (view->vadjustment) {
3187                 dy = view->scroll_y - (int) view->vadjustment->value;
3188                 view->scroll_y = (int) view->vadjustment->value;
3189         } else {
3190                 view->scroll_y = 0;
3191         }
3192
3193
3194         if (view->pending_resize)
3195                 gtk_widget_queue_draw (GTK_WIDGET (view));
3196         else
3197                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
3198
3199
3200         if (view->document)
3201                 view_update_range_and_current_page (view);
3202 }
3203
3204 GtkWidget*
3205 ev_view_new (void)
3206 {
3207         GtkWidget *view;
3208
3209         view = g_object_new (EV_TYPE_VIEW, NULL);
3210
3211         return view;
3212 }
3213
3214 static void
3215 setup_caches (EvView *view)
3216 {
3217         view->page_cache = ev_page_cache_get (view->document);
3218         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
3219         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
3220         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
3221 }
3222
3223 static void
3224 clear_caches (EvView *view)
3225 {
3226         if (view->pixbuf_cache) {
3227                 g_object_unref (view->pixbuf_cache);
3228                 view->pixbuf_cache = NULL;
3229         }
3230
3231         if (view->page_cache) {
3232                 view->page_cache = NULL;
3233         }
3234 }
3235
3236 void
3237 ev_view_set_loading (EvView       *view,
3238                      gboolean      loading)
3239 {
3240         view->loading = loading;
3241         gtk_widget_queue_draw (GTK_WIDGET (view));
3242 }
3243
3244 void
3245 ev_view_set_document (EvView     *view,
3246                       EvDocument *document)
3247 {
3248         g_return_if_fail (EV_IS_VIEW (view));
3249
3250         view->loading = FALSE;
3251
3252         if (document != view->document) {
3253                 clear_caches (view);
3254
3255                 if (view->document) {
3256                         g_signal_handlers_disconnect_by_func (view->document,
3257                                                               find_changed_cb,
3258                                                               view);
3259                         g_object_unref (view->document);
3260                         view->page_cache = NULL;
3261
3262                 }
3263
3264                 view->document = document;
3265                 view->find_result = 0;
3266
3267                 if (view->document) {
3268                         g_object_ref (view->document);
3269                         if (EV_IS_DOCUMENT_FIND (view->document)) {
3270                                 g_signal_connect (view->document,
3271                                                   "find_changed",
3272                                                   G_CALLBACK (find_changed_cb),
3273                                                   view);
3274                         }
3275
3276                         setup_caches (view);
3277                 }
3278
3279                 gtk_widget_queue_resize (GTK_WIDGET (view));
3280         }
3281 }
3282
3283 /*** Zoom and sizing mode ***/
3284
3285 #define EPSILON 0.0000001
3286 void
3287 ev_view_set_zoom (EvView   *view,
3288                   double    factor,
3289                   gboolean  relative)
3290 {
3291         double scale;
3292
3293         if (relative)
3294                 scale = view->scale * factor;
3295         else
3296                 scale = factor;
3297
3298         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
3299
3300         if (ABS (view->scale - scale) < EPSILON)
3301                 return;
3302
3303         view->scale = scale;
3304         view->pending_resize = TRUE;
3305
3306         gtk_widget_queue_resize (GTK_WIDGET (view));
3307
3308         g_object_notify (G_OBJECT (view), "zoom");
3309 }
3310
3311 double
3312 ev_view_get_zoom (EvView *view)
3313 {
3314         return view->scale;
3315 }
3316
3317 gboolean
3318 ev_view_get_continuous (EvView *view)
3319 {
3320         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3321
3322         return view->continuous;
3323 }
3324
3325 void
3326 ev_view_set_continuous (EvView   *view,
3327                         gboolean  continuous)
3328 {
3329         g_return_if_fail (EV_IS_VIEW (view));
3330
3331         continuous = continuous != FALSE;
3332
3333         if (view->continuous != continuous) {
3334                 view->continuous = continuous;
3335                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3336                 gtk_widget_queue_resize (GTK_WIDGET (view));
3337         }
3338
3339         g_object_notify (G_OBJECT (view), "continuous");
3340 }
3341
3342 gboolean
3343 ev_view_get_dual_page (EvView *view)
3344 {
3345         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3346
3347         return view->dual_page;
3348 }
3349
3350 void
3351 ev_view_set_dual_page (EvView   *view,
3352                        gboolean  dual_page)
3353 {
3354         g_return_if_fail (EV_IS_VIEW (view));
3355
3356         dual_page = dual_page != FALSE;
3357
3358         if (view->dual_page == dual_page)
3359                 return;
3360
3361         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3362         view->dual_page = dual_page;
3363         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
3364          * preload_cache_size to be 2 if dual_page is set.
3365          */
3366         gtk_widget_queue_resize (GTK_WIDGET (view));
3367
3368         g_object_notify (G_OBJECT (view), "dual-page");
3369 }
3370
3371 void
3372 ev_view_set_fullscreen (EvView   *view,
3373                          gboolean  fullscreen)
3374 {
3375         g_return_if_fail (EV_IS_VIEW (view));
3376
3377         fullscreen = fullscreen != FALSE;
3378
3379         if (view->fullscreen == fullscreen)
3380                 return;
3381
3382         view->fullscreen = fullscreen;
3383         gtk_widget_queue_resize (GTK_WIDGET (view));
3384
3385         g_object_notify (G_OBJECT (view), "fullscreen");
3386 }
3387
3388 gboolean
3389 ev_view_get_fullscreen (EvView *view)
3390 {
3391         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3392
3393         return view->fullscreen;
3394 }
3395
3396 void
3397 ev_view_set_presentation (EvView   *view,
3398                           gboolean  presentation)
3399 {
3400         g_return_if_fail (EV_IS_VIEW (view));
3401
3402         presentation = presentation != FALSE;
3403
3404         if (view->presentation == presentation)
3405                 return;
3406
3407         if (!presentation)
3408                 view->presentation_state = EV_PRESENTATION_NORMAL;
3409
3410         view->presentation = presentation;
3411         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
3412
3413         if (presentation) {
3414                 view->sizing_mode_saved = view->sizing_mode;
3415                 view->scale_saved = view->scale;
3416                 ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
3417         } else {
3418                 ev_view_set_sizing_mode (view, view->sizing_mode_saved);
3419                 ev_view_set_zoom (view, view->scale_saved, FALSE);
3420         }
3421
3422         gtk_widget_queue_resize (GTK_WIDGET (view));
3423
3424         if (GTK_WIDGET_REALIZED (view)) {
3425                 if (view->presentation)
3426                         gdk_window_set_background (GTK_WIDGET(view)->window,
3427                                                    &GTK_WIDGET (view)->style->black);
3428                 else
3429                         gdk_window_set_background (GTK_WIDGET(view)->window,
3430                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
3431         }
3432
3433         g_object_notify (G_OBJECT (view), "presentation");
3434 }
3435
3436 gboolean
3437 ev_view_get_presentation (EvView *view)
3438 {
3439         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3440
3441         return view->presentation;
3442 }
3443
3444 void
3445 ev_view_set_sizing_mode (EvView       *view,
3446                          EvSizingMode  sizing_mode)
3447 {
3448         g_return_if_fail (EV_IS_VIEW (view));
3449
3450         if (view->sizing_mode == sizing_mode)
3451                 return;
3452
3453         view->sizing_mode = sizing_mode;
3454         gtk_widget_queue_resize (GTK_WIDGET (view));
3455
3456         g_object_notify (G_OBJECT (view), "sizing-mode");
3457 }
3458
3459 EvSizingMode
3460 ev_view_get_sizing_mode (EvView *view)
3461 {
3462         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
3463
3464         return view->sizing_mode;
3465 }
3466
3467 gboolean
3468 ev_view_can_zoom_in (EvView *view)
3469 {
3470         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
3471 }
3472
3473 gboolean
3474 ev_view_can_zoom_out (EvView *view)
3475 {
3476         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
3477 }
3478
3479 void
3480 ev_view_zoom_in (EvView *view)
3481 {
3482         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3483
3484         view->pending_scroll = SCROLL_TO_CENTER;
3485         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
3486 }
3487
3488 void
3489 ev_view_zoom_out (EvView *view)
3490 {
3491         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
3492
3493         view->pending_scroll = SCROLL_TO_CENTER;
3494         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
3495 }
3496
3497 void
3498 ev_view_rotate_right (EvView *view)
3499 {
3500         int rotation = view->rotation + 90;
3501
3502         if (rotation >= 360) {
3503                 rotation -= 360;
3504         }
3505
3506         ev_view_set_rotation (view, rotation);
3507 }
3508
3509 void
3510 ev_view_rotate_left (EvView *view)
3511 {
3512         int rotation = view->rotation - 90;
3513
3514         if (rotation < 0) {
3515                 rotation += 360;
3516         }
3517
3518         ev_view_set_rotation (view, rotation);
3519 }
3520
3521 void
3522 ev_view_set_rotation (EvView *view, int rotation)
3523 {
3524         view->rotation = rotation;
3525
3526         if (view->pixbuf_cache) {
3527                 ev_pixbuf_cache_clear (view->pixbuf_cache);
3528                 gtk_widget_queue_resize (GTK_WIDGET (view));
3529         }
3530
3531         if (rotation != 0)
3532                 clear_selection (view);
3533
3534         g_object_notify (G_OBJECT (view), "rotation");
3535 }
3536
3537 int
3538 ev_view_get_rotation (EvView *view)
3539 {
3540         return view->rotation;
3541 }
3542
3543 static double
3544 zoom_for_size_fit_width (int doc_width,
3545                          int doc_height,
3546                          int target_width,
3547                          int target_height,
3548                          int vsb_width)
3549 {
3550         double scale;
3551
3552         scale = (double)target_width / doc_width;
3553
3554         if (doc_height * scale > target_height)
3555                 scale = (double) (target_width - vsb_width) / doc_width;
3556
3557         return scale;
3558 }
3559
3560 static double
3561 zoom_for_size_fit_height (int doc_width,
3562                           int doc_height,
3563                           int target_width,
3564                           int target_height,
3565                           int vsb_height)
3566 {
3567         double scale;
3568
3569         scale = (double)target_height / doc_height;
3570
3571         if (doc_width * scale > target_width)
3572                 scale = (double) (target_height - vsb_height) / doc_height;
3573
3574         return scale;
3575 }
3576
3577 static double
3578 zoom_for_size_best_fit (int doc_width,
3579                         int doc_height,
3580                         int target_width,
3581                         int target_height,
3582                         int vsb_width,
3583                         int hsb_width)
3584 {
3585         double w_scale;
3586         double h_scale;
3587
3588         w_scale = (double)target_width / doc_width;
3589         h_scale = (double)target_height / doc_height;
3590
3591         if (doc_height * w_scale > target_height)
3592                 w_scale = (double) (target_width - vsb_width) / doc_width;
3593         if (doc_width * h_scale > target_width)
3594                 h_scale = (double) (target_height - hsb_width) / doc_height;
3595
3596         return MIN (w_scale, h_scale);
3597 }
3598
3599
3600 static void
3601 ev_view_zoom_for_size_presentation (EvView *view,
3602                                     int     width,
3603                                     int     height)
3604 {
3605         int doc_width, doc_height;
3606         gdouble scale;
3607
3608         ev_page_cache_get_size (view->page_cache,
3609                                 view->current_page,
3610                                 view->rotation,
3611                                 1.0,
3612                                 &doc_width,
3613                                 &doc_height);
3614         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3615         ev_view_set_zoom (view, scale, FALSE);
3616 }
3617
3618 static void
3619 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3620                            int     width,
3621                            int     height,
3622                            int     vsb_width,
3623                            int     hsb_height)
3624 {
3625         int doc_width, doc_height;
3626         GtkBorder border;
3627         gdouble scale;
3628
3629         ev_page_cache_get_max_width (view->page_cache,
3630                                      view->rotation,
3631                                      1.0,
3632                                      &doc_width);
3633         ev_page_cache_get_max_height (view->page_cache,
3634                                       view->rotation,
3635                                       1.0,
3636                                       &doc_height);
3637         compute_border (view, doc_width, doc_height, &border);
3638
3639         doc_width = doc_width * 2;
3640         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3641         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3642
3643         /* FIXME: We really need to calculate the overall height here, not the
3644          * page height.  We assume there's always a vertical scrollbar for
3645          * now.  We need to fix this. */
3646         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3647                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3648         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3649                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3650         else
3651                 g_assert_not_reached ();
3652
3653         ev_view_set_zoom (view, scale, FALSE);
3654 }
3655
3656 static void
3657 ev_view_zoom_for_size_continuous (EvView *view,
3658                                   int     width,
3659                                   int     height,
3660                                   int     vsb_width,
3661                                   int     hsb_height)
3662 {
3663         int doc_width, doc_height;
3664         GtkBorder border;
3665         gdouble scale;
3666
3667         ev_page_cache_get_max_width (view->page_cache,
3668                                      view->rotation,
3669                                      1.0,
3670                                      &doc_width);
3671         ev_page_cache_get_max_height (view->page_cache,
3672                                       view->rotation,
3673                                       1.0,
3674                                       &doc_height);
3675         compute_border (view, doc_width, doc_height, &border);
3676
3677         width -= (border.left + border.right + 2 * view->spacing);
3678         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3679
3680         /* FIXME: We really need to calculate the overall height here, not the
3681          * page height.  We assume there's always a vertical scrollbar for
3682          * now.  We need to fix this. */
3683         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3684                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3685         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3686                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3687         else
3688                 g_assert_not_reached ();
3689
3690         ev_view_set_zoom (view, scale, FALSE);
3691 }
3692
3693 static void
3694 ev_view_zoom_for_size_dual_page (EvView *view,
3695                                  int     width,
3696                                  int     height,
3697                                  int     vsb_width,
3698                                  int     hsb_height)
3699 {
3700         GtkBorder border;
3701         gint doc_width, doc_height;
3702         gdouble scale;
3703         gint other_page;
3704
3705         other_page = view->current_page ^ 1;
3706
3707         /* Find the largest of the two. */
3708         ev_page_cache_get_size (view->page_cache,
3709                                 view->current_page,
3710                                 view->rotation,
3711                                 1.0,
3712                                 &doc_width, &doc_height);
3713
3714         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
3715                 gint width_2, height_2;
3716                 ev_page_cache_get_size (view->page_cache,
3717                                         other_page,
3718                                         view->rotation,
3719                                         1.0,
3720                                         &width_2, &height_2);
3721                 if (width_2 > doc_width)
3722                         doc_width = width_2;
3723                 if (height_2 > doc_height)
3724                         doc_height = height_2;
3725         }
3726         compute_border (view, doc_width, doc_height, &border);
3727
3728         doc_width = doc_width * 2;
3729         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
3730         height -= (border.top + border.bottom + 2 * view->spacing);
3731
3732         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3733                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3734         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3735                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3736         else
3737                 g_assert_not_reached ();
3738
3739         ev_view_set_zoom (view, scale, FALSE);
3740 }
3741
3742 static void
3743 ev_view_zoom_for_size_single_page (EvView *view,
3744                                    int     width,
3745                                    int     height,
3746                                    int     vsb_width,
3747                                    int     hsb_height)
3748 {
3749         int doc_width, doc_height;
3750         GtkBorder border;
3751         gdouble scale;
3752
3753         ev_page_cache_get_size (view->page_cache,
3754                                 view->current_page,
3755                                 view->rotation,
3756                                 1.0,
3757                                 &doc_width,
3758                                 &doc_height);
3759         /* Get an approximate border */
3760         compute_border (view, width, height, &border);
3761
3762         width -= (border.left + border.right + 2 * view->spacing);
3763         height -= (border.top + border.bottom + 2 * view->spacing);
3764
3765         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3766                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3767         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3768                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3769         else
3770                 g_assert_not_reached ();
3771
3772         ev_view_set_zoom (view, scale, FALSE);
3773 }
3774
3775 void
3776 ev_view_set_zoom_for_size (EvView *view,
3777                            int     width,
3778                            int     height,
3779                            int     vsb_width,
3780                            int     hsb_height)
3781 {
3782         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
3783                           view->sizing_mode == EV_SIZING_BEST_FIT);
3784         g_return_if_fail (width >= 0);
3785         g_return_if_fail (height >= 0);
3786
3787         if (view->document == NULL)
3788                 return;
3789
3790         if (view->presentation)
3791                 ev_view_zoom_for_size_presentation (view, width, height);
3792         else if (view->continuous && view->dual_page)
3793                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
3794         else if (view->continuous)
3795                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
3796         else if (view->dual_page)
3797                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
3798         else
3799                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
3800 }
3801
3802 /*** Status text messages ***/
3803
3804 const char *
3805 ev_view_get_status (EvView *view)
3806 {
3807         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3808
3809         return view->status;
3810 }
3811
3812 static void
3813 ev_view_set_status (EvView *view, const char *message)
3814 {
3815         g_return_if_fail (EV_IS_VIEW (view));
3816
3817         if (message != view->status) {
3818                 g_free (view->status);
3819                 view->status = g_strdup (message);
3820                 g_object_notify (G_OBJECT (view), "status");
3821         }
3822 }
3823
3824 static void
3825 update_find_status_message (EvView *view, gboolean this_page)
3826 {
3827         char *message;
3828
3829         if (this_page) {
3830                 int results;
3831
3832                 results = ev_document_find_get_n_results
3833                                 (EV_DOCUMENT_FIND (view->document),
3834                                  view->current_page);
3835                 /* TRANS: Sometimes this could be better translated as
3836                    "%d hit(s) on this page".  Therefore this string
3837                    contains plural cases. */
3838                 message = g_strdup_printf (ngettext ("%d found on this page",
3839                                                      "%d found on this page",
3840                                                      results),
3841                                            results);
3842         } else {
3843                 double percent;
3844
3845                 percent = ev_document_find_get_progress
3846                                 (EV_DOCUMENT_FIND (view->document));
3847                 message = g_strdup_printf (_("%3d%% remaining to search"),
3848                                            (int) ((1.0 - percent) * 100));
3849
3850         }
3851         ev_view_set_find_status (view, message);
3852         g_free (message);
3853 }
3854
3855 const char *
3856 ev_view_get_find_status (EvView *view)
3857 {
3858         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3859
3860         return view->find_status;
3861 }
3862
3863 static void
3864 ev_view_set_find_status (EvView *view, const char *message)
3865 {
3866         g_return_if_fail (EV_IS_VIEW (view));
3867
3868         g_free (view->find_status);
3869         view->find_status = g_strdup (message);
3870         g_object_notify (G_OBJECT (view), "find-status");
3871 }
3872
3873 /*** Find ***/
3874
3875 static void
3876 jump_to_find_result (EvView *view)
3877 {
3878         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3879         EvRectangle rect;
3880         GdkRectangle view_rect;
3881         int n_results;
3882         int page = view->current_page;
3883
3884         n_results = ev_document_find_get_n_results (find, page);
3885
3886         if (n_results > 0  && view->find_result < n_results) {
3887                 ev_document_find_get_result
3888                         (find, page, view->find_result, &rect);
3889
3890                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
3891                 ensure_rectangle_is_visible (view, &view_rect);
3892         }
3893 }
3894
3895 /**
3896  * jump_to_find_page
3897  * @view: #EvView instance
3898  * @direction: Direction to look
3899  * @shift: Shift from current page
3900  *
3901  * Jumps to the first page that has occurences of searched word.
3902  * Uses a direction where to look and a shift from current page.
3903  *
3904  */
3905 static void
3906 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
3907 {
3908         int n_pages, i;
3909
3910         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3911
3912         for (i = 0; i < n_pages; i++) {
3913                 int has_results;
3914                 int page;
3915
3916                 if (direction == EV_VIEW_FIND_NEXT)
3917                         page = view->current_page + i;
3918                 else
3919                         page = view->current_page - i;
3920                 page += shift;
3921
3922                 if (page >= n_pages) {
3923                         page = page - n_pages;
3924                 }
3925                 if (page < 0)
3926                         page = page + n_pages;
3927
3928                 has_results = ev_document_find_page_has_results
3929                                 (EV_DOCUMENT_FIND (view->document), page);
3930                 if (has_results == -1) {
3931                         break;
3932                 } else if (has_results == 1) {
3933                         ev_page_cache_set_current_page (view->page_cache, page);
3934                         break;
3935                 }
3936         }
3937 }
3938
3939 gboolean
3940 ev_view_can_find_next (EvView *view)
3941 {
3942         if (EV_IS_DOCUMENT_FIND (view->document)) {
3943                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3944                 int i, n_pages;
3945
3946                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
3947                 for (i = 0; i < n_pages; i++) {
3948                         if (ev_document_find_get_n_results (find, i) > 0) {
3949                                 return TRUE;
3950                         }
3951                 }
3952         }
3953
3954         return FALSE;
3955 }
3956
3957 void
3958 ev_view_find_next (EvView *view)
3959 {
3960         int n_results, n_pages;
3961         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3962
3963         n_results = ev_document_find_get_n_results (find, view->current_page);
3964
3965         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3966
3967         view->find_result++;
3968
3969         if (view->find_result >= n_results) {
3970
3971                 view->find_result = 0;
3972                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
3973                 jump_to_find_result (view);
3974         } else {
3975                 jump_to_find_result (view);
3976                 gtk_widget_queue_draw (GTK_WIDGET (view));
3977         }
3978 }
3979
3980 gboolean
3981 ev_view_can_find_previous (EvView *view)
3982 {
3983         if (EV_IS_DOCUMENT_FIND (view->document)) {
3984                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3985                 int i, n_pages;
3986
3987                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
3988                 for (i = n_pages - 1; i >= 0; i--) {
3989                         if (ev_document_find_get_n_results (find, i) > 0) {
3990                                 return TRUE;
3991                         }
3992                 }
3993         }
3994
3995         return FALSE;
3996 }
3997 void
3998 ev_view_find_previous (EvView *view)
3999 {
4000         int n_results, n_pages;
4001         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
4002         EvPageCache *page_cache;
4003
4004         page_cache = ev_page_cache_get (view->document);
4005
4006         n_results = ev_document_find_get_n_results (find, view->current_page);
4007
4008         n_pages = ev_page_cache_get_n_pages (page_cache);
4009
4010         view->find_result--;
4011
4012         if (view->find_result < 0) {
4013
4014                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
4015                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
4016                 jump_to_find_result (view);
4017         } else {
4018                 jump_to_find_result (view);
4019                 gtk_widget_queue_draw (GTK_WIDGET (view));
4020         }
4021 }
4022
4023 void ev_view_search_changed (EvView *view)
4024 {
4025         /* search string has changed, focus on new search result */
4026         view->jump_to_find_result = TRUE;
4027 }
4028
4029 /*** Selections ***/
4030
4031 /* compute_new_selection_rect/text calculates the area currently selected by
4032  * view_rect.  each handles a different mode;
4033  */
4034 static GList *
4035 compute_new_selection_rect (EvView       *view,
4036                             GdkPoint     *start,
4037                             GdkPoint     *stop)
4038 {
4039         GdkRectangle view_rect;
4040         int n_pages, i;
4041         GList *list = NULL;
4042
4043         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
4044
4045         view_rect.x = MIN (start->x, stop->x);
4046         view_rect.y = MIN (start->y, stop->y);
4047         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
4048         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
4049
4050         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4051
4052         for (i = 0; i < n_pages; i++) {
4053                 GdkRectangle page_area;
4054                 GtkBorder border;
4055
4056                 if (get_page_extents (view, i, &page_area, &border)) {
4057                         GdkRectangle overlap;
4058
4059                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
4060                                 EvViewSelection *selection;
4061
4062                                 selection = g_new0 (EvViewSelection, 1);
4063                                 selection->page = i;
4064                                 view_rect_to_doc_rect (view, &overlap, &page_area,
4065                                                        &(selection->rect));
4066
4067                                 list = g_list_append (list, selection);
4068                         }
4069                 }
4070         }
4071
4072         return list;
4073 }
4074
4075 static gboolean
4076 gdk_rectangle_point_in (GdkRectangle *rectangle,
4077                         GdkPoint     *point)
4078 {
4079         return rectangle->x <= point->x &&
4080                 rectangle->y <= point->y &&
4081                 point->x < rectangle->x + rectangle->width &&
4082                 point->y < rectangle->y + rectangle->height;
4083 }
4084
4085 static GList *
4086 compute_new_selection_text (EvView   *view,
4087                             GdkPoint *start,
4088                             GdkPoint *stop)
4089 {
4090         int n_pages, i, first, last;
4091         GList *list = NULL;
4092         EvViewSelection *selection;
4093         gint width, height;
4094         int start_page, end_page;
4095
4096         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
4097
4098         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4099
4100         /* First figure out the range of pages the selection
4101          * affects. */
4102         first = n_pages;
4103         last = 0;
4104         if (view->continuous) {
4105                 start_page = 0;
4106                 end_page = n_pages;
4107         } else if (view->dual_page) {
4108                 start_page = view->start_page;
4109                 end_page = view->end_page + 1;
4110         } else {
4111                 start_page = view->current_page;
4112                 end_page = view->current_page + 1;
4113         }
4114
4115         for (i = start_page; i < end_page; i++) {
4116                 GdkRectangle page_area;
4117                 GtkBorder border;
4118
4119                 get_page_extents (view, i, &page_area, &border);
4120                 if (gdk_rectangle_point_in (&page_area, start) ||
4121                     gdk_rectangle_point_in (&page_area, stop)) {
4122                         if (first == n_pages)
4123                                 first = i;
4124                         last = i;
4125                 }
4126
4127         }
4128
4129
4130
4131         /* Now create a list of EvViewSelection's for the affected
4132          * pages.  This could be an empty list, a list of just one
4133          * page or a number of pages.*/
4134         for (i = first; i < last + 1; i++) {
4135                 GdkRectangle page_area;
4136                 GtkBorder border;
4137                 GdkPoint *point;
4138
4139                 ev_page_cache_get_size (view->page_cache, i,
4140                                         view->rotation,
4141                                         1.0, &width, &height);
4142
4143                 selection = g_new0 (EvViewSelection, 1);
4144                 selection->page = i;
4145                 selection->rect.x1 = selection->rect.y1 = 0;
4146                 selection->rect.x2 = width;
4147                 selection->rect.y2 = height;
4148
4149                 get_page_extents (view, i, &page_area, &border);
4150
4151                 if (gdk_rectangle_point_in (&page_area, start))
4152                         point = start;
4153                 else
4154                         point = stop;
4155
4156                 if (i == first)
4157                         view_point_to_doc_point (view, point, &page_area,
4158                                                  &selection->rect.x1,
4159                                                  &selection->rect.y1);
4160
4161                 /* If the selection is contained within just one page,
4162                  * make sure we don't write 'start' into both points
4163                  * in selection->rect. */
4164                 if (first == last)
4165                         point = stop;
4166
4167                 if (i == last)
4168                         view_point_to_doc_point (view, point, &page_area,
4169                                                  &selection->rect.x2,
4170                                                  &selection->rect.y2);
4171
4172                 list = g_list_append (list, selection);
4173         }
4174
4175         return list;
4176 }
4177
4178 /* This function takes the newly calculated list, and figures out which regions
4179  * have changed.  It then queues a redraw approporiately.
4180  */
4181 static void
4182 merge_selection_region (EvView *view,
4183                         GList  *new_list)
4184 {
4185         GList *old_list;
4186         GList *new_list_ptr, *old_list_ptr;
4187
4188         /* Update the selection */
4189         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
4190         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4191         view->selection_info.selections = new_list;
4192         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
4193         g_object_notify (G_OBJECT (view), "has-selection");
4194
4195         new_list_ptr = new_list;
4196         old_list_ptr = old_list;
4197
4198         while (new_list_ptr || old_list_ptr) {
4199                 EvViewSelection *old_sel, *new_sel;
4200                 int cur_page;
4201                 GdkRegion *region = NULL;
4202
4203                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
4204                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
4205
4206                 /* Assume that the lists are in order, and we run through them
4207                  * comparing them, one page at a time.  We come out with the
4208                  * first page we see. */
4209                 if (new_sel && old_sel) {
4210                         if (new_sel->page < old_sel->page) {
4211                                 new_list_ptr = new_list_ptr->next;
4212                                 old_sel = NULL;
4213                         } else if (new_sel->page > old_sel->page) {
4214                                 old_list_ptr = old_list_ptr->next;
4215                                 new_sel = NULL;
4216                         } else {
4217                                 new_list_ptr = new_list_ptr->next;
4218                                 old_list_ptr = old_list_ptr->next;
4219                         }
4220                 } else if (new_sel) {
4221                         new_list_ptr = new_list_ptr->next;
4222                 } else if (old_sel) {
4223                         old_list_ptr = old_list_ptr->next;
4224                 }
4225
4226                 g_assert (new_sel || old_sel);
4227
4228                 /* is the page we're looking at on the screen?*/
4229                 cur_page = new_sel ? new_sel->page : old_sel->page;
4230                 if (cur_page < view->start_page || cur_page > view->end_page)
4231                         continue;
4232
4233                 /* seed the cache with a new page.  We are going to need the new
4234                  * region too. */
4235                 if (new_sel) {
4236                         GdkRegion *tmp_region = NULL;
4237                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
4238                                                               cur_page,
4239                                                               view->scale,
4240                                                               &tmp_region);
4241                         if (tmp_region) {
4242                                 new_sel->covered_region = gdk_region_copy (tmp_region);
4243                         }
4244                 }
4245
4246                 /* Now we figure out what needs redrawing */
4247                 if (old_sel && new_sel) {
4248                         if (old_sel->covered_region &&
4249                             new_sel->covered_region) {
4250                                 /* We only want to redraw the areas that have
4251                                  * changed, so we xor the old and new regions
4252                                  * and redraw if it's different */
4253                                 region = gdk_region_copy (old_sel->covered_region);
4254                                 gdk_region_xor (region, new_sel->covered_region);
4255                                 if (gdk_region_empty (region)) {
4256                                         gdk_region_destroy (region);
4257                                         region = NULL;
4258                                 }
4259                         } else if (old_sel->covered_region) {
4260                                 region = gdk_region_copy (old_sel->covered_region);
4261                         } else if (new_sel->covered_region) {
4262                                 region = gdk_region_copy (new_sel->covered_region);
4263                         }
4264                 } else if (old_sel && !new_sel) {
4265                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
4266                                 region = gdk_region_copy (old_sel->covered_region);
4267                         }
4268                 } else if (!old_sel && new_sel) {
4269                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
4270                                 region = gdk_region_copy (new_sel->covered_region);
4271                         }
4272                 } else {
4273                         g_assert_not_reached ();
4274                 }
4275
4276                 /* Redraw the damaged region! */
4277                 if (region) {
4278                         GdkRectangle page_area;
4279                         GtkBorder border;
4280
4281                         get_page_extents (view, cur_page, &page_area, &border);
4282                         gdk_region_offset (region,
4283                                            page_area.x + border.left - view->scroll_x,
4284                                            page_area.y + border.top - view->scroll_y);
4285                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
4286                         gdk_region_destroy (region);
4287                 }
4288         }
4289
4290         /* Free the old list, now that we're done with it. */
4291         g_list_foreach (old_list, (GFunc) selection_free, NULL);
4292 }
4293
4294 static void
4295 compute_selections (EvView   *view,
4296                     GdkPoint *start,
4297                     GdkPoint *stop)
4298 {
4299         GList *list;
4300
4301         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
4302                 list = compute_new_selection_rect (view, start, stop);
4303         else
4304                 list = compute_new_selection_text (view, start, stop);
4305         merge_selection_region (view, list);
4306 }
4307
4308 /* Free's the selection.  It's up to the caller to queue redraws if needed.
4309  */
4310 static void
4311 selection_free (EvViewSelection *selection)
4312 {
4313         if (selection->covered_region)
4314                 gdk_region_destroy (selection->covered_region);
4315         g_free (selection);
4316 }
4317
4318 static void
4319 clear_selection (EvView *view)
4320 {
4321         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
4322         view->selection_info.selections = NULL;
4323         view->selection_info.in_selection = FALSE;
4324         g_object_notify (G_OBJECT (view), "has-selection");
4325 }
4326
4327
4328 void
4329 ev_view_select_all (EvView *view)
4330 {
4331         int n_pages, i;
4332
4333         /* Disable selection on rotated pages for the 0.4.0 series */
4334         if (view->rotation != 0)
4335                 return;
4336
4337         clear_selection (view);
4338
4339         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4340         for (i = 0; i < n_pages; i++) {
4341                 int width, height;
4342                 EvViewSelection *selection;
4343
4344                 ev_page_cache_get_size (view->page_cache,
4345                                         i,
4346                                         view->rotation,
4347                                         1.0, &width, &height);
4348
4349                 selection = g_new0 (EvViewSelection, 1);
4350                 selection->page = i;
4351                 selection->rect.x1 = selection->rect.y1 = 0;
4352                 selection->rect.x2 = width;
4353                 selection->rect.y2 = height;
4354
4355                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
4356         }
4357
4358         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
4359         g_object_notify (G_OBJECT (view), "has-selection");
4360         gtk_widget_queue_draw (GTK_WIDGET (view));
4361 }
4362
4363 gboolean
4364 ev_view_get_has_selection (EvView *view)
4365 {
4366         return view->selection_info.selections != NULL;
4367 }
4368
4369 static char *
4370 get_selected_text (EvView *ev_view)
4371 {
4372         GString *text;
4373         GList *l;
4374
4375         text = g_string_new (NULL);
4376
4377         ev_document_doc_mutex_lock ();
4378
4379         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
4380                 EvViewSelection *selection = (EvViewSelection *)l->data;
4381                 char *tmp;
4382
4383                 tmp = ev_document_get_text (ev_view->document,
4384                                             selection->page,
4385                                             &selection->rect);
4386                 g_string_append (text, tmp);
4387                 g_free (tmp);
4388         }
4389
4390         ev_document_doc_mutex_unlock ();
4391
4392         return g_string_free (text, FALSE);
4393 }
4394
4395 void
4396 ev_view_copy (EvView *ev_view)
4397 {
4398         GtkClipboard *clipboard;
4399         char *text;
4400
4401         if (!ev_document_can_get_text (ev_view->document)) {
4402                 return;
4403         }
4404
4405         text = get_selected_text (ev_view);
4406         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4407                                               GDK_SELECTION_CLIPBOARD);
4408         gtk_clipboard_set_text (clipboard, text, -1);
4409         g_free (text);
4410 }
4411
4412 static void
4413 ev_view_primary_get_cb (GtkClipboard     *clipboard,
4414                         GtkSelectionData *selection_data,
4415                         guint             info,
4416                         gpointer          data)
4417 {
4418         EvView *ev_view = EV_VIEW (data);
4419         char *text;
4420
4421         if (!ev_document_can_get_text (ev_view->document)) {
4422                 return;
4423         }
4424
4425         text = get_selected_text (ev_view);
4426         gtk_selection_data_set_text (selection_data, text, -1);
4427         g_free (text);
4428 }
4429
4430 static void
4431 ev_view_primary_clear_cb (GtkClipboard *clipboard,
4432                           gpointer      data)
4433 {
4434         EvView *view = EV_VIEW (data);
4435
4436         clear_selection (view);
4437 }
4438
4439 static void
4440 ev_view_update_primary_selection (EvView *ev_view)
4441 {
4442         GtkClipboard *clipboard;
4443
4444         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
4445                                               GDK_SELECTION_PRIMARY);
4446
4447         if (ev_view->selection_info.selections) {
4448                 if (!gtk_clipboard_set_with_owner (clipboard,
4449                                                    targets,
4450                                                    G_N_ELEMENTS (targets),
4451                                                    ev_view_primary_get_cb,
4452                                                    ev_view_primary_clear_cb,
4453                                                    G_OBJECT (ev_view)))
4454                         ev_view_primary_clear_cb (clipboard, ev_view);
4455         } else {
4456                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
4457                         gtk_clipboard_clear (clipboard);
4458         }
4459 }
4460
4461 /*** Cursor operations ***/
4462
4463 static GdkCursor *
4464 ev_view_create_invisible_cursor(void)
4465 {
4466        GdkBitmap *empty;
4467        GdkColor black = { 0, 0, 0, 0 };
4468        static char bits[] = { 0x00 };
4469
4470        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
4471
4472        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
4473 }
4474
4475 static void
4476 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
4477 {
4478         GdkCursor *cursor = NULL;
4479         GdkDisplay *display;
4480         GtkWidget *widget;
4481
4482         if (view->cursor == new_cursor) {
4483                 return;
4484         }
4485
4486         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
4487         display = gtk_widget_get_display (widget);
4488         view->cursor = new_cursor;
4489
4490         switch (new_cursor) {
4491                 case EV_VIEW_CURSOR_NORMAL:
4492                         gdk_window_set_cursor (widget->window, NULL);
4493                         break;
4494                 case EV_VIEW_CURSOR_IBEAM:
4495                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
4496                         break;
4497                 case EV_VIEW_CURSOR_LINK:
4498                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
4499                         break;
4500                 case EV_VIEW_CURSOR_WAIT:
4501                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
4502                         break;
4503                 case EV_VIEW_CURSOR_HIDDEN:
4504                         cursor = ev_view_create_invisible_cursor ();
4505                         break;
4506                 case EV_VIEW_CURSOR_DRAG:
4507                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
4508                         break;
4509         }
4510
4511         if (cursor) {
4512                 gdk_window_set_cursor (widget->window, cursor);
4513                 gdk_cursor_unref (cursor);
4514                 gdk_flush();
4515         }
4516 }
4517
4518 void
4519 ev_view_hide_cursor (EvView *view)
4520 {
4521        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
4522 }
4523
4524 void
4525 ev_view_show_cursor (EvView *view)
4526 {
4527        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4528 }
4529
4530 static void
4531 ev_view_reset_presentation_state (EvView *view)
4532 {
4533         if (!view->presentation ||
4534             view->presentation_state == EV_PRESENTATION_NORMAL)
4535                 return;
4536
4537         view->presentation_state = EV_PRESENTATION_NORMAL;
4538         gdk_window_set_background (GTK_WIDGET (view)->window,
4539                                    &GTK_WIDGET (view)->style->black);
4540         gtk_widget_queue_draw (GTK_WIDGET (view));
4541 }
4542
4543 gboolean
4544 ev_view_next_page (EvView *view)
4545 {
4546         int page, n_pages;
4547
4548         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4549
4550         if (!view->page_cache)
4551                 return FALSE;
4552
4553         ev_view_reset_presentation_state (view);
4554
4555         page = ev_page_cache_get_current_page (view->page_cache);
4556         n_pages = ev_page_cache_get_n_pages (view->page_cache);
4557
4558         if (view->dual_page && !view->presentation)
4559                 page = page + 2;
4560         else
4561                 page = page + 1;
4562
4563         if (page < n_pages) {
4564                 ev_page_cache_set_current_page (view->page_cache, page);
4565                 return TRUE;
4566         } else if (view->presentation && page == n_pages) {
4567                 view->presentation_state = EV_PRESENTATION_END;
4568                 gtk_widget_queue_draw (GTK_WIDGET (view));
4569                 return TRUE;
4570         } else if (view->dual_page && page == n_pages) {
4571                 ev_page_cache_set_current_page (view->page_cache, page - 1);
4572                 return TRUE;
4573         } else {
4574                 return FALSE;
4575         }
4576 }
4577
4578 gboolean
4579 ev_view_previous_page (EvView *view)
4580 {
4581         int page;
4582
4583         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
4584
4585         if (!view->page_cache)
4586                 return FALSE;
4587
4588         if (view->presentation &&
4589             view->presentation_state == EV_PRESENTATION_END) {
4590                 ev_view_reset_presentation_state (view);
4591                 return TRUE;
4592         }
4593
4594         ev_view_reset_presentation_state (view);
4595
4596         page = ev_page_cache_get_current_page (view->page_cache);
4597
4598         if (view->dual_page && !view->presentation)
4599                 page = page - 2;
4600         else
4601                 page = page - 1;
4602
4603         if (page >= 0) {
4604                 ev_page_cache_set_current_page (view->page_cache, page);
4605                 return TRUE;
4606         } else if (ev_view_get_dual_page (view) && page == -1) {
4607                 ev_page_cache_set_current_page (view->page_cache, 0);
4608                 return TRUE;
4609         } else {
4610                 return FALSE;
4611         }
4612 }
4613
4614 /*** Enum description for usage in signal ***/
4615
4616 GType
4617 ev_sizing_mode_get_type (void)
4618 {
4619   static GType etype = 0;
4620   if (etype == 0) {
4621     static const GEnumValue values[] = {
4622       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4623       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4624       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4625       { 0, NULL, NULL }
4626     };
4627     etype = g_enum_register_static ("EvSizingMode", values);
4628   }
4629   return etype;
4630 }
4631
4632 GType
4633 ev_scroll_type_get_type (void)
4634 {
4635   static GType etype = 0;
4636   if (etype == 0) {
4637     static const GEnumValue values[] = {
4638       { EV_SCROLL_PAGE_FORWARD, "EV_SCROLL_PAGE_FORWARD", "scroll-page-forward" },
4639       { EV_SCROLL_PAGE_BACKWARD, "EV_SCROLL_PAGE_BACKWARD", "scroll-page-backward" },
4640       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4641       { EV_SCROLL_STEP_FORWARD, "EV_SCROLL_STEP_FORWARD", "scroll-step-forward" },
4642       { EV_SCROLL_STEP_UP, "EV_SCROLL_STEP_UP", "scroll-step-up" },
4643       { EV_SCROLL_STEP_DOWN, "EV_SCROLL_STEP_DOWN", "scroll-step-down" },
4644       { 0, NULL, NULL }
4645     };
4646     etype = g_enum_register_static ("EvScrollType", values);
4647   }
4648   return etype;
4649 }