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 <math.h>
  22 #include <string.h>
  23 #include <gtk/gtkalignment.h>
  24 #include <glib/gi18n.h>
  25 #include <gtk/gtkbindings.h>
  26 #include <gtk/gtkselection.h>
  27 #include <gtk/gtkclipboard.h>
  28 #include <gdk/gdkkeysyms.h>
  29 #include <libgnomevfs/gnome-vfs-utils.h>
  30
  31 #include "ev-marshal.h"
  32 #include "ev-view.h"
  33 #include "ev-view-private.h"
  34 #include "ev-utils.h"
  35 #include "ev-selection.h"
  36 #include "ev-document-find.h"
  37 #include "ev-document-misc.h"
  38 #include "ev-debug.h"
  39 #include "ev-job-queue.h"
  40 #include "ev-page-cache.h"
  41 #include "ev-pixbuf-cache.h"
  42 #include "ev-tooltip.h"
  43
  44 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  45 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  46 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  47
  48
  49 enum {
  50         PROP_0,
  51         PROP_STATUS,
  52         PROP_FIND_STATUS,
  53         PROP_CONTINUOUS,
  54         PROP_DUAL_PAGE,
  55         PROP_FULLSCREEN,
  56         PROP_PRESENTATION,
  57         PROP_SIZING_MODE,
  58         PROP_ZOOM,
  59         PROP_ROTATION,
  60         PROP_HAS_SELECTION,
  61 };
  62
  63 enum {
  64         SIGNAL_BINDING_ACTIVATED,
  65         SIGNAL_ZOOM_INVALID,
  66         SIGNAL_EXTERNAL_LINK,
  67         SIGNAL_POPUP_MENU,
  68         N_SIGNALS,
  69 };
  70
  71 enum {
  72         TARGET_STRING,
  73         TARGET_TEXT,
  74         TARGET_COMPOUND_TEXT,
  75         TARGET_UTF8_STRING,
  76         TARGET_TEXT_BUFFER_CONTENTS
  77 };
  78
  79 static const GtkTargetEntry targets[] = {
  80         { "STRING", 0, TARGET_STRING },
  81         { "TEXT",   0, TARGET_TEXT },
  82         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  83         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  84 };
  85
  86 static guint signals[N_SIGNALS];
  87
  88 typedef enum {
  89         EV_VIEW_FIND_NEXT,
  90         EV_VIEW_FIND_PREV
  91 } EvViewFindDirection;
  92
  93 #define ZOOM_IN_FACTOR  1.2
  94 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  95
  96 #define MIN_SCALE 0.05409
  97 #define MAX_SCALE 4.0
  98
  99 #define SCROLL_TIME 150
 100
 101 /*** Scrolling ***/
 102 static void       scroll_to_current_page                     (EvView *view,
 103                                                               GtkOrientation orientation);
 104 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 105                                                               GtkAdjustment      *hadjustment,
 106                                                               GtkAdjustment      *vadjustment);
 107 static void       view_update_range_and_current_page         (EvView             *view);
 108 static void       set_scroll_adjustment                      (EvView             *view,
 109                                                               GtkOrientation      orientation,
 110                                                               GtkAdjustment      *adjustment);
 111 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 112                                                               GtkAdjustment      *hadjustment,
 113                                                               GtkAdjustment      *vadjustment);
 114 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 115                                                               guint               keyval,
 116                                                               GdkModifierType modifiers,
 117                                                               GtkScrollType       scroll,
 118                                                               gboolean            horizontal);
 119 static void       ev_view_binding_activated                  (EvView             *view,
 120                                                               GtkScrollType       scroll,
 121                                                               gboolean            horizontal);
 122 static void       ensure_rectangle_is_visible                (EvView             *view,
 123                                                               GdkRectangle       *rect);
 124
 125 /*** Geometry computations ***/
 126 static void       compute_border                             (EvView             *view,
 127                                                               int                 width,
 128                                                               int                 height,
 129                                                               GtkBorder          *border);
 130 static void       get_page_y_offset                          (EvView *view,
 131                                                               int page,
 132                                                               double zoom,
 133                                                               int *y_offset);
 134 static gboolean   get_page_extents                           (EvView             *view,
 135                                                               gint                page,
 136                                                               GdkRectangle       *page_area,
 137                                                               GtkBorder          *border);
 138 static void       view_rect_to_doc_rect                      (EvView             *view,
 139                                                               GdkRectangle       *view_rect,
 140                                                               GdkRectangle       *page_area,
 141                                                               EvRectangle        *doc_rect);
 142 static void       doc_rect_to_view_rect                      (EvView             *view,
 143                                                               int                 page,
 144                                                               EvRectangle        *doc_rect,
 145                                                               GdkRectangle       *view_rect);
 146 static void       find_page_at_location                      (EvView             *view,
 147                                                               gdouble             x,
 148                                                               gdouble             y,
 149                                                               gint               *page,
 150                                                               gint               *x_offset,
 151                                                               gint               *y_offset);
 152 static gboolean  doc_point_to_view_point                     (EvView       *view,
 153                                                               int           page,
 154                                                               EvPoint      *doc_point,
 155                                                               GdkPoint     *view_point);
 156 /*** Hyperrefs ***/
 157 static EvLink *   ev_view_get_link_at_location               (EvView  *view,
 158                                                               gdouble  x,
 159                                                               gdouble  y);
 160 static char*      tip_from_link                              (EvView             *view,
 161                                                               EvLink             *link);
 162 static void       handle_link_over_xy                        (EvView *view,
 163                                                               gint x,
 164                                                               gint y);
 165 /*** GtkWidget implementation ***/
 166 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 167                                                               GtkRequisition     *requisition);
 168 static void       ev_view_size_request_continuous            (EvView             *view,
 169                                                               GtkRequisition     *requisition);
 170 static void       ev_view_size_request_dual_page             (EvView             *view,
 171                                                               GtkRequisition     *requisition);
 172 static void       ev_view_size_request_single_page           (EvView             *view,
 173                                                               GtkRequisition     *requisition);
 174 static void       ev_view_size_request                       (GtkWidget          *widget,
 175                                                               GtkRequisition     *requisition);
 176 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 177                                                               GtkAllocation      *allocation);
 178 static void       ev_view_realize                            (GtkWidget          *widget);
 179 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 180                                                               GdkEventScroll     *event);
 181 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 182                                                               GdkEventExpose     *event);
 183 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 184 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 185                                                               GdkEventButton     *event);
 186 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 187                                                               GdkEventMotion     *event);
 188 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 189                                                               GdkEventButton     *event);
 190 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 191                                                               GdkEventCrossing   *event);
 192 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 193                                                               GdkEventCrossing   *event);
 194 static void       ev_view_style_set                          (GtkWidget          *widget,
 195                                                               GtkStyle           *old_style);
 196
 197 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 198
 199 /*** Drawing ***/
 200 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 201 static void       draw_rubberband                            (GtkWidget          *widget,
 202                                                               GdkWindow          *window,
 203                                                               const GdkRectangle *rect,
 204                                                               guchar              alpha);
 205 static void       highlight_find_results                     (EvView             *view,
 206                                                               int                 page);
 207 static void       draw_one_page                              (EvView             *view,
 208                                                               gint                page,
 209                                                               GdkRectangle       *page_area,
 210                                                               GtkBorder          *border,
 211                                                               GdkRectangle       *expose_area);
 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                         factor = (adjustment->value) / adjustment->upper;
 391                         break;
 392                 case SCROLL_TO_PAGE_POSITION:
 393                         break;
 394                 case SCROLL_TO_CENTER:
 395                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 396                         break;
 397         }
 398
 399         adjustment->page_size = allocation;
 400         adjustment->step_increment = allocation * 0.1;
 401         adjustment->page_increment = allocation * 0.9;
 402         adjustment->lower = 0;
 403         adjustment->upper = MAX (allocation, requisition);
 404
 405         /*
 406          * We add 0.5 to the values before to average out our rounding errors.
 407          */
 408         switch (view->pending_scroll) {
 409                 case SCROLL_TO_KEEP_POSITION:
 410                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 411                         gtk_adjustment_set_value (adjustment, (int)new_value);
 412                         break;
 413                 case SCROLL_TO_PAGE_POSITION:
 414                         scroll_to_current_page (view, orientation);
 415                         break;
 416                 case SCROLL_TO_CENTER:
 417                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 418                                            0, adjustment->upper - adjustment->page_size);
 419                         gtk_adjustment_set_value (adjustment, (int)new_value);
 420                         break;
 421         }
 422
 423         gtk_adjustment_changed (adjustment);
 424 }
 425
 426 static void
 427 view_update_range_and_current_page (EvView *view)
 428 {
 429         gint current_page;
 430
 431         if (view->pending_scroll != SCROLL_TO_KEEP_POSITION)
 432                 return;
 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                 int i;
 443
 444                 if (!(view->vadjustment && view->hadjustment))
 445                         return;
 446
 447                 current_area.x = view->hadjustment->value;
 448                 current_area.width = view->hadjustment->upper;
 449                 current_area.y = view->vadjustment->value;
 450                 current_area.height = view->vadjustment->page_size;
 451
 452                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 453
 454                         get_page_extents (view, i, &page_area, &border);
 455
 456                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 457                                 if (! found) {
 458                                         view->start_page = i;
 459                                         found = TRUE;
 460
 461                                 }
 462                                 view->end_page = i;
 463                         } else if (found) {
 464                                 break;
 465                         }
 466                 }
 467
 468         } else {
 469                 if (view->dual_page) {
 470                         if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) {
 471                                 view->start_page = view->current_page;
 472                                 if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 473                                         view->end_page = view->start_page + 1;
 474                                 else
 475                                         view->end_page = view->start_page;
 476                         } else {
 477                                 if (view->current_page - 1 < 0)
 478                                         view->start_page = view->current_page;
 479                                 else
 480                                         view->start_page = view->current_page - 1;
 481                                 view->end_page = view->current_page;
 482                         }
 483                 } else {
 484                         view->start_page = view->current_page;
 485                         view->end_page = view->current_page;
 486                 }
 487
 488         }
 489
 490         current_page = ev_page_cache_get_current_page (view->page_cache);
 491
 492         if (current_page < view->start_page || current_page > view->end_page) {
 493                 ev_page_cache_set_current_page (view->page_cache, view->start_page);
 494         }
 495
 496         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 497                                         view->start_page,
 498                                         view->end_page,
 499                                         view->rotation,
 500                                         view->scale,
 501                                         view->selection_info.selections);
 502 }
 503
 504 static void
 505 set_scroll_adjustment (EvView *view,
 506                        GtkOrientation  orientation,
 507                        GtkAdjustment  *adjustment)
 508 {
 509         GtkAdjustment **to_set;
 510
 511         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 512                 to_set = &view->hadjustment;
 513         else
 514                 to_set = &view->vadjustment;
 515
 516         if (*to_set != adjustment) {
 517                 if (*to_set) {
 518                         g_signal_handlers_disconnect_by_func (*to_set,
 519                                                               (gpointer) on_adjustment_value_changed,
 520                                                               view);
 521                         g_object_unref (*to_set);
 522                 }
 523
 524                 *to_set = adjustment;
 525                 view_set_adjustment_values (view, orientation);
 526
 527                 if (*to_set) {
 528                         g_object_ref (*to_set);
 529                         g_signal_connect (*to_set, "value_changed",
 530                                           G_CALLBACK (on_adjustment_value_changed), view);
 531                 }
 532         }
 533 }
 534
 535 static void
 536 ev_view_set_scroll_adjustments (EvView *view,
 537                                 GtkAdjustment  *hadjustment,
 538                                 GtkAdjustment  *vadjustment)
 539 {
 540         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 541         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 542
 543         on_adjustment_value_changed (NULL, view);
 544 }
 545
 546 static void
 547 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 548                            guint           keyval,
 549                            GdkModifierType modifiers,
 550                            GtkScrollType   scroll,
 551                            gboolean        horizontal)
 552 {
 553   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 554
 555   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 556                                 "binding_activated", 2,
 557                                 GTK_TYPE_SCROLL_TYPE, scroll,
 558                                 G_TYPE_BOOLEAN, horizontal);
 559   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 560                                 "binding_activated", 2,
 561                                 GTK_TYPE_SCROLL_TYPE, scroll,
 562                                 G_TYPE_BOOLEAN, horizontal);
 563 }
 564
 565 void
 566 ev_view_scroll (EvView        *view,
 567                 EvScrollType   scroll)
 568 {
 569         GtkAdjustment *adjustment;
 570         double value, increment;
 571         gboolean first_page = FALSE;
 572         gboolean last_page = FALSE;
 573
 574         /* Assign values for increment and vertical adjustment */
 575         adjustment = view->vadjustment;
 576         increment = adjustment->page_size * 0.75;
 577         value = adjustment->value;
 578
 579         /* Assign boolean for first and last page */
 580         if (view->current_page == 0)
 581                 first_page = TRUE;
 582         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 583                 last_page = TRUE;
 584
 585         switch (scroll) {
 586                 case EV_SCROLL_PAGE_BACKWARD:
 587                         /* Do not jump backwards if at the first page */
 588                         if (value == (adjustment->lower) && first_page) {
 589                                 /* Do nothing */
 590                                 /* At the top of a page, assign the upper bound limit of previous page */
 591                         } else if (value == (adjustment->lower)) {
 592                                 value = adjustment->upper - adjustment->page_size;
 593                                 ev_view_previous_page (view);
 594                                 /* Jump to the top */
 595                         } else {
 596                                 value = MAX (value - increment, adjustment->lower);
 597                         }
 598                         break;
 599                 case EV_SCROLL_PAGE_FORWARD:
 600                         /* Do not jump forward if at the last page */
 601                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 602                                 /* Do nothing */
 603                         /* At the bottom of a page, assign the lower bound limit of next page */
 604                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 605                                 value = 0;
 606                                 ev_view_next_page (view);
 607                         /* Jump to the bottom */
 608                         } else {
 609                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 610                         }
 611                         break;
 612                 default:
 613                         break;
 614         }
 615
 616         gtk_adjustment_set_value (adjustment, value);
 617 }
 618
 619 static void
 620 ev_view_binding_activated (EvView *view,
 621                            GtkScrollType scroll,
 622                            gboolean horizontal)
 623 {
 624         GtkAdjustment *adjustment;
 625         double value;
 626
 627         if (view->presentation) {
 628                 switch (scroll) {
 629                         case GTK_SCROLL_STEP_BACKWARD:
 630                                 ev_view_previous_page (view);
 631                                 break;
 632                         case GTK_SCROLL_STEP_FORWARD:
 633                                 ev_view_next_page (view);
 634                                 break;
 635                         default:
 636                                 break;
 637                 }
 638                 return;
 639         }
 640
 641         if (horizontal) {
 642                 adjustment = view->hadjustment;
 643         } else {
 644                 adjustment = view->vadjustment;
 645         }
 646
 647         value = adjustment->value;
 648
 649         switch (scroll) {
 650                 case GTK_SCROLL_STEP_BACKWARD:
 651                         value -= adjustment->step_increment;
 652                         break;
 653                 case GTK_SCROLL_STEP_FORWARD:
 654                         value += adjustment->step_increment;
 655                         break;
 656                 case GTK_SCROLL_STEP_DOWN:
 657                         value -= adjustment->step_increment/10;
 658                         break;
 659                 case GTK_SCROLL_STEP_UP:
 660                         value += adjustment->step_increment/10;
 661                         break;
 662                 default:
 663                         break;
 664         }
 665
 666         value = CLAMP (value, adjustment->lower,
 667                        adjustment->upper - adjustment->page_size);
 668
 669         gtk_adjustment_set_value (adjustment, value);
 670 }
 671
 672 #define MARGIN 5
 673
 674 static void
 675 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 676 {
 677         GtkWidget *widget = GTK_WIDGET (view);
 678         GtkAdjustment *adjustment;
 679         int value;
 680
 681         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
 682
 683         adjustment = view->vadjustment;
 684
 685         if (rect->y < adjustment->value) {
 686                 value = MAX (adjustment->lower, rect->y - MARGIN);
 687                 gtk_adjustment_set_value (view->vadjustment, value);
 688         } else if (rect->y + rect->height >
 689                    adjustment->value + widget->allocation.height) {
 690                 value = MIN (adjustment->upper, rect->y + rect->height -
 691                              widget->allocation.height + MARGIN);
 692                 gtk_adjustment_set_value (view->vadjustment, value);
 693         }
 694
 695         adjustment = view->hadjustment;
 696
 697         if (rect->x < adjustment->value) {
 698                 value = MAX (adjustment->lower, rect->x - MARGIN);
 699                 gtk_adjustment_set_value (view->hadjustment, value);
 700         } else if (rect->x + rect->height >
 701                    adjustment->value + widget->allocation.width) {
 702                 value = MIN (adjustment->upper, rect->x + rect->width -
 703                              widget->allocation.width + MARGIN);
 704                 gtk_adjustment_set_value (view->hadjustment, value);
 705         }
 706 }
 707
 708 /*** Geometry computations ***/
 709
 710 static void
 711 compute_border (EvView *view, int width, int height, GtkBorder *border)
 712 {
 713         if (view->presentation) {
 714                 border->left = 0;
 715                 border->right = 0;
 716                 border->top = 0;
 717                 border->bottom = 0;
 718         } else {
 719                 ev_document_misc_get_page_border_size (width, height, border);
 720         }
 721 }
 722
 723 static void
 724 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 725 {
 726         int max_width, offset;
 727         GtkBorder border;
 728
 729         g_return_if_fail (y_offset != NULL);
 730
 731         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 732
 733         compute_border (view, max_width, max_width, &border);
 734
 735         if (view->dual_page) {
 736                 ev_page_cache_get_height_to_page (view->page_cache, page,
 737                                                   view->rotation, zoom, NULL, &offset);
 738                 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);
 739         } else {
 740                 ev_page_cache_get_height_to_page (view->page_cache, page,
 741                                                   view->rotation, zoom, &offset, NULL);
 742                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 743         }
 744
 745         *y_offset = offset;
 746         return;
 747 }
 748
 749 static gboolean
 750 get_page_extents (EvView       *view,
 751                   gint          page,
 752                   GdkRectangle *page_area,
 753                   GtkBorder    *border)
 754 {
 755         GtkWidget *widget;
 756         int width, height;
 757
 758         widget = GTK_WIDGET (view);
 759
 760         /* Get the size of the page */
 761         ev_page_cache_get_size (view->page_cache, page,
 762                                 view->rotation,
 763                                 view->scale,
 764                                 &width, &height);
 765         compute_border (view, width, height, border);
 766         page_area->width = width + border->left + border->right;
 767         page_area->height = height + border->top + border->bottom;
 768
 769         if (view->presentation) {
 770                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 771                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 772         } else if (view->continuous) {
 773                 gint max_width;
 774                 gint x, y;
 775
 776                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 777                                              view->scale, &max_width);
 778                 max_width = max_width + border->left + border->right;
 779                 /* Get the location of the bounding box */
 780                 if (view->dual_page) {
 781                         x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing);
 782                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 783                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 784                                 x = x + (max_width - width - border->left - border->right);
 785                 } else {
 786                         x = view->spacing;
 787                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 788                 }
 789
 790                 get_page_y_offset (view, page, view->scale, &y);
 791
 792                 page_area->x = x;
 793                 page_area->y = y;
 794         } else {
 795                 gint x, y;
 796                 if (view->dual_page) {
 797                         gint width_2, height_2;
 798                         gint max_width = width;
 799                         gint max_height = height;
 800                         GtkBorder overall_border;
 801                         gint other_page;
 802
 803                         other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1;
 804
 805                         /* First, we get the bounding box of the two pages */
 806                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)
 807                             && (0 <= other_page)) {
 808                                 ev_page_cache_get_size (view->page_cache,
 809                                                         other_page,
 810                                                         view->rotation,
 811                                                         view->scale,
 812                                                         &width_2, &height_2);
 813                                 if (width_2 > width)
 814                                         max_width = width_2;
 815                                 if (height_2 > height)
 816                                         max_height = height_2;
 817                         }
 818                         compute_border (view, max_width, max_height, &overall_border);
 819
 820                         /* Find the offsets */
 821                         x = view->spacing;
 822                         y = view->spacing;
 823
 824                         /* Adjust for being the left or right page */
 825                         if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache))
 826                                 x = x + max_width - width;
 827                         else
 828                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 829
 830                         y = y + (max_height - height)/2;
 831
 832                         /* Adjust for extra allocation */
 833                         x = x + MAX (0, widget->allocation.width -
 834                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 835                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 836                 } else {
 837                         x = view->spacing;
 838                         y = view->spacing;
 839
 840                         /* Adjust for extra allocation */
 841                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 842                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 843                 }
 844
 845                 page_area->x = x;
 846                 page_area->y = y;
 847         }
 848
 849         return TRUE;
 850 }
 851
 852 static void
 853 view_point_to_doc_point (EvView *view,
 854                          GdkPoint *view_point,
 855                          GdkRectangle *page_area,
 856                          double  *doc_point_x,
 857                          double  *doc_point_y)
 858 {
 859         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 860         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 861 }
 862
 863 static void
 864 view_rect_to_doc_rect (EvView *view,
 865                        GdkRectangle *view_rect,
 866                        GdkRectangle *page_area,
 867                        EvRectangle  *doc_rect)
 868 {
 869         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 870         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 871         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 872         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 873 }
 874
 875 static gboolean
 876 doc_point_to_view_point (EvView       *view,
 877                          int           page,
 878                          EvPoint      *doc_point,
 879                          GdkPoint     *view_point)
 880 {
 881         GdkRectangle page_area;
 882         GtkBorder border;
 883         double x, y, view_x, view_y;
 884         int width, height;
 885
 886         ev_page_cache_get_size (view->page_cache, page,
 887                                 view->rotation,
 888                                 1.0,
 889                                 &width, &height);
 890
 891         if (view->rotation == 0) {
 892                 x = doc_point->x;
 893                 y = doc_point->y;
 894         } else if (view->rotation == 90) {
 895                 x = width - doc_point->y;
 896                 y = doc_point->x;
 897         } else if (view->rotation == 180) {
 898                 x = width - doc_point->x;
 899                 y = height - doc_point->y;
 900         } else if (view->rotation == 270) {
 901                 x = doc_point->y;
 902                 y = height - doc_point->x;
 903         } else {
 904                 g_assert_not_reached ();
 905         }
 906
 907         get_page_extents (view, page, &page_area, &border);
 908
 909         view_x = x * view->scale;
 910         view_y = y * view->scale;
 911         view_point->x = view_x + page_area.x;
 912         view_point->y = view_y + page_area.y;
 913
 914         return (view_x > 0 && view_x <= page_area.width &&
 915                 view_y > 0 && view_y <= page_area.height);
 916 }
 917
 918 static void
 919 doc_rect_to_view_rect (EvView       *view,
 920                        int           page,
 921                        EvRectangle  *doc_rect,
 922                        GdkRectangle *view_rect)
 923 {
 924         GdkRectangle page_area;
 925         GtkBorder border;
 926         double x, y, w, h;
 927         int width, height;
 928
 929         ev_page_cache_get_size (view->page_cache, page,
 930                                 view->rotation,
 931                                 1.0,
 932                                 &width, &height);
 933
 934         if (view->rotation == 0) {
 935                 x = doc_rect->x1;
 936                 y = doc_rect->y1;
 937                 w = doc_rect->x2 - doc_rect->x1;
 938                 h = doc_rect->y2 - doc_rect->y1;
 939         } else if (view->rotation == 90) {
 940                 x = width - doc_rect->y2;
 941                 y = doc_rect->x1;
 942                 w = doc_rect->y2 - doc_rect->y1;
 943                 h = doc_rect->x2 - doc_rect->x1;
 944         } else if (view->rotation == 180) {
 945                 x = width - doc_rect->x2;
 946                 y = height - doc_rect->y2;
 947                 w = doc_rect->x2 - doc_rect->x1;
 948                 h = doc_rect->y2 - doc_rect->y1;
 949         } else if (view->rotation == 270) {
 950                 x = doc_rect->y1;
 951                 y = height - doc_rect->x2;
 952                 w = doc_rect->y2 - doc_rect->y1;
 953                 h = doc_rect->x2 - doc_rect->x1;
 954         } else {
 955                 g_assert_not_reached ();
 956         }
 957
 958         get_page_extents (view, page, &page_area, &border);
 959
 960         view_rect->x = x * view->scale + page_area.x;
 961         view_rect->y = y * view->scale + page_area.y;
 962         view_rect->width = w * view->scale;
 963         view_rect->height = h * view->scale;
 964 }
 965
 966 static void
 967 find_page_at_location (EvView  *view,
 968                        gdouble  x,
 969                        gdouble  y,
 970                        gint    *page,
 971                        gint    *x_offset,
 972                        gint    *y_offset)
 973 {
 974         int i;
 975
 976         if (view->document == NULL)
 977                 return;
 978
 979         g_assert (page);
 980         g_assert (x_offset);
 981         g_assert (y_offset);
 982
 983         for (i = view->start_page; i <= view->end_page; i++) {
 984                 GdkRectangle page_area;
 985                 GtkBorder border;
 986
 987                 if (! get_page_extents (view, i, &page_area, &border))
 988                         continue;
 989
 990                 if ((x >= page_area.x + border.left) &&
 991                     (x < page_area.x + page_area.width - border.right) &&
 992                     (y >= page_area.y + border.top) &&
 993                     (y < page_area.y + page_area.height - border.bottom)) {
 994                         *page = i;
 995                         *x_offset = x - (page_area.x + border.left);
 996                         *y_offset = y - (page_area.y + border.top);
 997                         return;
 998                 }
 999         }
1000
1001         *page = -1;
1002 }
1003
1004 static gboolean
1005 location_in_text (EvView  *view,
1006                   gdouble  x,
1007                   gdouble  y)
1008 {
1009         GdkRegion *region;
1010         gint page = -1;
1011         gint x_offset = 0, y_offset = 0;
1012
1013         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1014
1015         if (page == -1)
1016                 return FALSE;
1017
1018         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1019
1020         if (region)
1021                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1022         else
1023                 return FALSE;
1024 }
1025
1026 static int
1027 ev_view_get_width (EvView *view)
1028 {
1029         return GTK_WIDGET (view)->allocation.width;
1030 }
1031
1032 static int
1033 ev_view_get_height (EvView *view)
1034 {
1035         return GTK_WIDGET (view)->allocation.height;
1036 }
1037
1038 static gboolean
1039 location_in_selected_text (EvView  *view,
1040                            gdouble  x,
1041                            gdouble  y)
1042 {
1043         gint page = -1;
1044         gint x_offset = 0, y_offset = 0;
1045         EvViewSelection *selection;
1046         GList *l = NULL;
1047
1048         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1049                 selection = (EvViewSelection *)l->data;
1050
1051                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1052
1053                 if (page != selection->page)
1054                         continue;
1055
1056                 if (selection->covered_region &&
1057                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1058                         return TRUE;
1059         }
1060
1061         return FALSE;
1062 }
1063
1064 /*** Hyperref ***/
1065 static EvLink *
1066 ev_view_get_link_at_location (EvView  *view,
1067                               gdouble  x,
1068                               gdouble  y)
1069 {
1070         gint page = -1;
1071         gint x_offset = 0, y_offset = 0;
1072         GList *link_mapping;
1073
1074         x += view->scroll_x;
1075         y += view->scroll_y;
1076
1077         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1078
1079         if (page == -1)
1080                 return NULL;
1081
1082         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1083
1084         if (link_mapping)
1085                 return ev_link_mapping_find (link_mapping, x_offset / view->scale, y_offset / view->scale);
1086         else
1087                 return NULL;
1088 }
1089
1090 static void
1091 goto_fitr_link (EvView *view, EvLink *link)
1092 {
1093         EvPoint doc_point;
1094         int page;
1095         double zoom;
1096
1097         zoom = zoom_for_size_best_fit (ev_link_get_right (link) - ev_link_get_left (link),
1098                                        ev_link_get_top (link) - ev_link_get_bottom (link),
1099                                        ev_view_get_width (view),
1100                                        ev_view_get_height (view), 0, 0);
1101
1102         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1103         ev_view_set_zoom (view, zoom, FALSE);
1104
1105         page = ev_link_get_page (link);
1106         doc_point.x = ev_link_get_left (link);
1107         doc_point.y = ev_link_get_top (link);
1108
1109         view->current_page = page;
1110         view->pending_point = doc_point;
1111         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1112
1113         gtk_widget_queue_resize (GTK_WIDGET (view));
1114 }
1115
1116 static void
1117 goto_fitv_link (EvView *view, EvLink *link)
1118 {
1119         EvPoint doc_point;
1120         int doc_width, doc_height, page;
1121         double zoom;
1122
1123         page = ev_link_get_page (link);
1124         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1125
1126         doc_point.x = ev_link_get_left (link);
1127         doc_point.y = 0;
1128
1129         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1130                                          ev_view_get_width (view),
1131                                          ev_view_get_height (view), 0);
1132
1133         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1134         ev_view_set_zoom (view, zoom, FALSE);
1135
1136         view->current_page = page;
1137         view->pending_point = doc_point;
1138         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1139
1140         gtk_widget_queue_resize (GTK_WIDGET (view));
1141 }
1142
1143 static void
1144 goto_fith_link (EvView *view, EvLink *link)
1145 {
1146         EvPoint doc_point;
1147         int doc_width, doc_height, page;
1148         double zoom;
1149
1150         page = ev_link_get_page (link);
1151         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1152
1153         doc_point.x = 0;
1154         doc_point.y = doc_height - ev_link_get_top (link);
1155
1156         zoom = zoom_for_size_fit_width (doc_width, ev_link_get_top (link),
1157                                         ev_view_get_width (view),
1158                                         ev_view_get_height (view), 0);
1159
1160         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1161         ev_view_set_zoom (view, zoom, FALSE);
1162
1163         view->current_page = page;
1164         view->pending_point = doc_point;
1165         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1166
1167         gtk_widget_queue_resize (GTK_WIDGET (view));
1168 }
1169
1170 static void
1171 goto_fit_link (EvView *view, EvLink *link)
1172 {
1173         double zoom;
1174         int doc_width, doc_height;
1175         int page;
1176
1177         page = ev_link_get_page (link);
1178         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1179
1180         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1181                                        ev_view_get_height (view), 0, 0);
1182
1183         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1184         ev_view_set_zoom (view, zoom, FALSE);
1185
1186         view->current_page = page;
1187         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1188
1189         gtk_widget_queue_resize (GTK_WIDGET (view));
1190 }
1191
1192 static void
1193 goto_xyz_link (EvView *view, EvLink *link)
1194 {
1195         EvPoint doc_point;
1196         int height, page;
1197         double zoom;
1198
1199         zoom = ev_link_get_zoom (link);
1200         page = ev_link_get_page (link);
1201         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, NULL, &height);
1202
1203         if (zoom != 0) {
1204                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1205                 ev_view_set_zoom (view, zoom, FALSE);
1206         }
1207
1208         doc_point.x = ev_link_get_left (link);
1209         doc_point.y = height - ev_link_get_top (link);
1210
1211         view->current_page = page;
1212         view->pending_point = doc_point;
1213         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1214
1215         gtk_widget_queue_resize (GTK_WIDGET (view));
1216 }
1217
1218 void
1219 ev_view_goto_link (EvView *view, EvLink *link)
1220 {
1221         EvLinkType type;
1222         int page;
1223
1224         type = ev_link_get_link_type (link);
1225
1226         switch (type) {
1227                 case EV_LINK_TYPE_TITLE:
1228                         break;
1229                 case EV_LINK_TYPE_PAGE:
1230                         page = ev_link_get_page (link);
1231                         ev_page_cache_set_current_page (view->page_cache, page);
1232                         break;
1233                 case EV_LINK_TYPE_PAGE_FIT:
1234                         goto_fit_link (view, link);
1235                         break;
1236                 case EV_LINK_TYPE_PAGE_FITH:
1237                         goto_fith_link (view, link);
1238                         break;
1239                 case EV_LINK_TYPE_PAGE_FITV:
1240                         goto_fitv_link (view, link);
1241                         break;
1242                 case EV_LINK_TYPE_PAGE_FITR:
1243                         goto_fitr_link (view, link);
1244                         break;
1245                 case EV_LINK_TYPE_PAGE_XYZ:
1246                         goto_xyz_link (view, link);
1247                         break;
1248                 case EV_LINK_TYPE_EXTERNAL_URI:
1249                 case EV_LINK_TYPE_LAUNCH:
1250                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, link);
1251                         break;
1252         }
1253 }
1254
1255 static char *
1256 tip_from_link (EvView *view, EvLink *link)
1257 {
1258         EvLinkType type;
1259         char *msg = NULL;
1260         char *page_label;
1261
1262         type = ev_link_get_link_type (link);
1263
1264         switch (type) {
1265                 case EV_LINK_TYPE_TITLE:
1266                         if (ev_link_get_title (link))
1267                                 msg = g_strdup (ev_link_get_title (link));
1268                         break;
1269                 case EV_LINK_TYPE_PAGE:
1270                 case EV_LINK_TYPE_PAGE_XYZ:
1271                         page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link));
1272                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1273                         g_free (page_label);
1274                         break;
1275                 case EV_LINK_TYPE_EXTERNAL_URI:
1276                         msg = g_strdup (ev_link_get_uri (link));
1277                         break;
1278                 default:
1279                         break;
1280         }
1281
1282         return msg;
1283 }
1284
1285 static void
1286 handle_link_over_xy (EvView *view, gint x, gint y)
1287 {
1288         EvLink *link;
1289
1290         link = ev_view_get_link_at_location (view, x, y);
1291
1292         if (view->link_tooltip == NULL) {
1293                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1294         }
1295
1296         if (view->hovered_link != link) {
1297                 view->hovered_link = link;
1298                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1299         }
1300
1301         if (link) {
1302                 char *msg = tip_from_link (view, link);
1303
1304                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1305                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1306
1307                         ev_tooltip_set_position (tooltip, x, y);
1308                         ev_tooltip_set_text (tooltip, msg);
1309                         ev_tooltip_activate (tooltip);
1310                 }
1311                 g_free (msg);
1312
1313                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1314         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1315                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1316         } else {
1317                 ev_view_set_status (view, NULL);
1318                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1319                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1320                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1321         }
1322         return;
1323 }
1324
1325 /*** GtkWidget implementation ***/
1326
1327 static void
1328 ev_view_size_request_continuous_dual_page (EvView         *view,
1329                                            GtkRequisition *requisition)
1330 {
1331         int max_width;
1332         gint n_pages;
1333         GtkBorder border;
1334
1335         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1336                                      view->scale, &max_width);
1337         compute_border (view, max_width, max_width, &border);
1338
1339         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1340
1341         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1342         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1343
1344         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1345                 requisition->width = 1;
1346         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1347                 requisition->width = 1;
1348                 /* FIXME: This could actually be set on one page docs or docs
1349                  * with a strange aspect ratio. */
1350                 /* requisition->height = 1;*/
1351         }
1352 }
1353
1354 static void
1355 ev_view_size_request_continuous (EvView         *view,
1356                                  GtkRequisition *requisition)
1357 {
1358         int max_width;
1359         int n_pages;
1360         GtkBorder border;
1361
1362
1363         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1364                                      view->scale, &max_width);
1365         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1366         compute_border (view, max_width, max_width, &border);
1367
1368         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1369         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1370
1371         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1372                 requisition->width = 1;
1373         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1374                 requisition->width = 1;
1375                 /* FIXME: This could actually be set on one page docs or docs
1376                  * with a strange aspect ratio. */
1377                 /* requisition->height = 1;*/
1378         }
1379 }
1380
1381 static void
1382 ev_view_size_request_dual_page (EvView         *view,
1383                                 GtkRequisition *requisition)
1384 {
1385         GtkBorder border;
1386         gint width, height;
1387
1388         /* Find the largest of the two. */
1389         ev_page_cache_get_size (view->page_cache,
1390                                 view->current_page,
1391                                 view->rotation,
1392                                 view->scale,
1393                                 &width, &height);
1394         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1395                 gint width_2, height_2;
1396                 ev_page_cache_get_size (view->page_cache,
1397                                         view->current_page + 1,
1398                                         view->rotation,
1399                                         view->scale,
1400                                         &width_2, &height_2);
1401                 if (width_2 > width) {
1402                         width = width_2;
1403                         height = height_2;
1404                 }
1405         }
1406         compute_border (view, width, height, &border);
1407
1408         requisition->width = ((width + border.left + border.right) * 2) +
1409                 (view->spacing * 3);
1410         requisition->height = (height + border.top + border.bottom) +
1411                 (view->spacing * 2);
1412
1413         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1414                 requisition->width = 1;
1415         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1416                 requisition->width = 1;
1417                 requisition->height = 1;
1418         }
1419 }
1420
1421 static void
1422 ev_view_size_request_single_page (EvView         *view,
1423                                   GtkRequisition *requisition)
1424 {
1425         GtkBorder border;
1426         gint width, height;
1427
1428         ev_page_cache_get_size (view->page_cache,
1429                                 view->current_page,
1430                                 view->rotation,
1431                                 view->scale,
1432                                 &width, &height);
1433         compute_border (view, width, height, &border);
1434
1435         requisition->width = width + border.left + border.right + (2 * view->spacing);
1436         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1437
1438         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1439                 requisition->width = 1;
1440                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1441         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1442                 requisition->width = 1;
1443                 requisition->height = 1;
1444         }
1445 }
1446
1447 static void
1448 ev_view_size_request (GtkWidget      *widget,
1449                       GtkRequisition *requisition)
1450 {
1451         EvView *view = EV_VIEW (widget);
1452
1453         if (view->document == NULL) {
1454                 requisition->width = 1;
1455                 requisition->height = 1;
1456                 return;
1457         }
1458
1459         if (view->presentation) {
1460                 requisition->width = 1;
1461                 requisition->height = 1;
1462                 return;
1463         }
1464
1465         if (view->continuous && view->dual_page)
1466                 ev_view_size_request_continuous_dual_page (view, requisition);
1467         else if (view->continuous)
1468                 ev_view_size_request_continuous (view, requisition);
1469         else if (view->dual_page)
1470                 ev_view_size_request_dual_page (view, requisition);
1471         else
1472                 ev_view_size_request_single_page (view, requisition);
1473 }
1474
1475 static void
1476 ev_view_size_allocate (GtkWidget      *widget,
1477                        GtkAllocation  *allocation)
1478 {
1479         EvView *view = EV_VIEW (widget);
1480
1481         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1482             view->sizing_mode == EV_SIZING_BEST_FIT) {
1483
1484                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1485
1486                 ev_view_size_request (widget, &widget->requisition);
1487         }
1488
1489         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1490         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1491
1492         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1493         view->pending_resize = FALSE;
1494
1495         if (view->document)
1496                 view_update_range_and_current_page (view);
1497
1498         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1499 }
1500
1501 static void
1502 ev_view_realize (GtkWidget *widget)
1503 {
1504         EvView *view = EV_VIEW (widget);
1505         GdkWindowAttr attributes;
1506
1507         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1508
1509
1510         attributes.window_type = GDK_WINDOW_CHILD;
1511         attributes.wclass = GDK_INPUT_OUTPUT;
1512         attributes.visual = gtk_widget_get_visual (widget);
1513         attributes.colormap = gtk_widget_get_colormap (widget);
1514
1515         attributes.x = widget->allocation.x;
1516         attributes.y = widget->allocation.y;
1517         attributes.width = widget->allocation.width;
1518         attributes.height = widget->allocation.height;
1519         attributes.event_mask = GDK_EXPOSURE_MASK |
1520                                 GDK_BUTTON_PRESS_MASK |
1521                                 GDK_BUTTON_RELEASE_MASK |
1522                                 GDK_SCROLL_MASK |
1523                                 GDK_KEY_PRESS_MASK |
1524                                 GDK_POINTER_MOTION_MASK |
1525                                 GDK_POINTER_MOTION_HINT_MASK |
1526                                 GDK_ENTER_NOTIFY_MASK |
1527                                 GDK_LEAVE_NOTIFY_MASK;
1528
1529         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1530                                          &attributes,
1531                                          GDK_WA_X | GDK_WA_Y |
1532                                          GDK_WA_COLORMAP |
1533                                          GDK_WA_VISUAL);
1534         gdk_window_set_user_data (widget->window, widget);
1535         widget->style = gtk_style_attach (widget->style, widget->window);
1536
1537         if (view->presentation)
1538                 gdk_window_set_background (widget->window, &widget->style->black);
1539         else
1540                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1541 }
1542
1543 static gboolean
1544 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1545 {
1546         EvView *view = EV_VIEW (widget);
1547         guint state;
1548
1549         state = event->state & gtk_accelerator_get_default_mod_mask ();
1550
1551         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1552                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1553
1554                 if (event->direction == GDK_SCROLL_UP ||
1555                     event->direction == GDK_SCROLL_LEFT) {
1556                         if (ev_view_can_zoom_in (view)) {
1557                                 ev_view_zoom_in (view);
1558                         }
1559                 } else {
1560                         if (ev_view_can_zoom_out (view)) {
1561                                 ev_view_zoom_out (view);
1562                         }
1563                 }
1564
1565                 return TRUE;
1566         }
1567
1568         /* Shift+Wheel scrolls the in the perpendicular direction */
1569         if (state & GDK_SHIFT_MASK) {
1570                 if (event->direction == GDK_SCROLL_UP)
1571                         event->direction = GDK_SCROLL_LEFT;
1572                 if (event->direction == GDK_SCROLL_LEFT)
1573                         event->direction = GDK_SCROLL_UP;
1574                 if (event->direction == GDK_SCROLL_DOWN)
1575                         event->direction = GDK_SCROLL_RIGHT;
1576                 if (event->direction == GDK_SCROLL_RIGHT)
1577                         event->direction = GDK_SCROLL_DOWN;
1578
1579                 event->state &= ~GDK_SHIFT_MASK;
1580                 state &= ~GDK_SHIFT_MASK;
1581         }
1582
1583         if (state == 0 && view->presentation) {
1584                 switch (event->direction) {
1585                 case GDK_SCROLL_DOWN:
1586                 case GDK_SCROLL_RIGHT:
1587                         ev_view_next_page (view);
1588                         break;
1589                 case GDK_SCROLL_UP:
1590                 case GDK_SCROLL_LEFT:
1591                         ev_view_previous_page (view);
1592                         break;
1593                 }
1594
1595                 return TRUE;
1596         }
1597
1598         return FALSE;
1599 }
1600
1601 static EvViewSelection *
1602 find_selection_for_page (EvView *view,
1603                          gint    page)
1604 {
1605         GList *list;
1606
1607         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1608                 EvViewSelection *selection;
1609
1610                 selection = (EvViewSelection *) list->data;
1611
1612                 if (selection->page == page)
1613                         return selection;
1614         }
1615
1616         return NULL;
1617 }
1618
1619 static gboolean
1620 ev_view_expose_event (GtkWidget      *widget,
1621                       GdkEventExpose *event)
1622 {
1623         EvView *view = EV_VIEW (widget);
1624         int i;
1625
1626         if (view->loading) {
1627                 draw_loading_text (view,
1628                                    &(widget->allocation),
1629                                    &(event->area));
1630         }
1631
1632         if (view->document == NULL)
1633                 return FALSE;
1634
1635         for (i = view->start_page; i <= view->end_page; i++) {
1636                 GdkRectangle page_area;
1637                 GtkBorder border;
1638
1639                 if (!get_page_extents (view, i, &page_area, &border))
1640                         continue;
1641
1642                 page_area.x -= view->scroll_x;
1643                 page_area.y -= view->scroll_y;
1644
1645                 draw_one_page (view, i, &page_area, &border, &(event->area));
1646
1647                 if (EV_IS_DOCUMENT_FIND (view->document))
1648                         highlight_find_results (view, i);
1649         }
1650
1651         return FALSE;
1652 }
1653
1654 static gboolean
1655 ev_view_popup_menu (GtkWidget *widget)
1656 {
1657     gint x, y;
1658     EvLink *link;
1659     EvView *view = EV_VIEW (widget);
1660
1661     gtk_widget_get_pointer (widget, &x, &y);
1662     link = ev_view_get_link_at_location (view, x, y);
1663     g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1664     return TRUE;
1665 }
1666
1667 static gboolean
1668 ev_view_button_press_event (GtkWidget      *widget,
1669                             GdkEventButton *event)
1670 {
1671         EvView *view = EV_VIEW (widget);
1672         EvLink *link;
1673
1674         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1675                 gtk_widget_grab_focus (widget);
1676         }
1677
1678         view->pressed_button = event->button;
1679         view->selection_info.in_drag = FALSE;
1680
1681         switch (event->button) {
1682                 case 1:
1683                         if (view->selection_info.selections) {
1684                                 if (location_in_selected_text (view,
1685                                                                event->x + view->scroll_x,
1686                                                                event->y + view->scroll_y)) {
1687                                         view->selection_info.in_drag = TRUE;
1688                                 } else {
1689                                         clear_selection (view);
1690                                 }
1691
1692                                 gtk_widget_queue_draw (widget);
1693                         }
1694
1695                         view->selection_info.start.x = event->x + view->scroll_x;
1696                         view->selection_info.start.y = event->y + view->scroll_y;
1697
1698                         return TRUE;
1699                 case 2:
1700                         /* use root coordinates as reference point because
1701                          * scrolling changes window relative coordinates */
1702                         view->drag_info.start.x = event->x_root;
1703                         view->drag_info.start.y = event->y_root;
1704                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1705                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1706
1707                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1708
1709                         return TRUE;
1710                 case 3:
1711                         link = ev_view_get_link_at_location (view, event->x, event->y);
1712                         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1713                         return TRUE;
1714         }
1715
1716         return FALSE;
1717 }
1718
1719 static void
1720 ev_view_drag_data_get (GtkWidget        *widget,
1721                        GdkDragContext   *context,
1722                        GtkSelectionData *selection_data,
1723                        guint             info,
1724                        guint             time)
1725 {
1726         EvView *view = EV_VIEW (widget);
1727
1728         if (view->selection_info.selections &&
1729             ev_document_can_get_text (view->document)) {
1730                 gchar *text;
1731
1732                 text = get_selected_text (view);
1733
1734                 gtk_selection_data_set_text (selection_data, text, strlen (text));
1735
1736                 g_free (text);
1737         }
1738 }
1739
1740 static gboolean
1741 selection_update_idle_cb (EvView *view)
1742 {
1743         compute_selections (view, &view->selection_info.start, &view->motion);
1744         view->selection_update_id = 0;
1745         return FALSE;
1746 }
1747
1748 static gboolean
1749 selection_scroll_timeout_cb (EvView *view)
1750 {
1751         gint x, y, shift = 0;
1752         GtkWidget *widget = GTK_WIDGET (view);
1753
1754         gtk_widget_get_pointer (widget, &x, &y);
1755
1756         if (y > widget->allocation.height) {
1757                 shift = (y - widget->allocation.height) / 2;
1758         } else if (y < 0) {
1759                 shift = y / 2;
1760         }
1761
1762         if (shift)
1763                 gtk_adjustment_set_value (view->vadjustment,
1764                                           CLAMP (view->vadjustment->value + shift,
1765                                           view->vadjustment->lower,
1766                                           view->vadjustment->upper -
1767                                           view->vadjustment->page_size));
1768
1769         if (x > widget->allocation.width) {
1770                 shift = (x - widget->allocation.width) / 2;
1771         } else if (x < 0) {
1772                 shift = x / 2;
1773         }
1774
1775         if (shift)
1776                 gtk_adjustment_set_value (view->hadjustment,
1777                                           CLAMP (view->hadjustment->value + shift,
1778                                           view->hadjustment->lower,
1779                                           view->hadjustment->upper -
1780                                           view->hadjustment->page_size));
1781
1782         return TRUE;
1783 }
1784
1785 static gboolean
1786 ev_view_motion_notify_event (GtkWidget      *widget,
1787                              GdkEventMotion *event)
1788 {
1789         EvView *view = EV_VIEW (widget);
1790         gint x, y;
1791
1792         if (!view->document)
1793                 return FALSE;
1794
1795         if (event->is_hint || event->window != widget->window) {
1796             gtk_widget_get_pointer (widget, &x, &y);
1797         } else {
1798             x = event->x;
1799             y = event->y;
1800         }
1801
1802         if (view->selection_info.in_drag) {
1803                 if (gtk_drag_check_threshold (widget,
1804                                               view->selection_info.start.x,
1805                                               view->selection_info.start.y,
1806                                               x, y)) {
1807                         GdkDragContext *context;
1808                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
1809
1810                         gtk_target_list_add_text_targets (target_list, 0);
1811
1812                         context = gtk_drag_begin (widget, target_list,
1813                                                   GDK_ACTION_COPY,
1814                                                   1, (GdkEvent *)event);
1815
1816                         view->selection_info.in_drag = FALSE;
1817
1818                         gtk_target_list_unref (target_list);
1819
1820                         return TRUE;
1821                 }
1822         }
1823
1824         /* For the Evince 0.4.x release, we limit selection to un-rotated
1825          * documents only.
1826          */
1827         if (view->pressed_button == 1 && view->rotation == 0) {
1828
1829                 /* Schedule timeout to scroll during selection and additionally
1830                  * scroll once to allow arbitrary speed. */
1831                 if (!view->selection_scroll_id)
1832                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
1833                 else
1834                     selection_scroll_timeout_cb (view);
1835
1836                 view->selection_info.in_selection = TRUE;
1837                 view->motion.x = x + view->scroll_x;
1838                 view->motion.y = y + view->scroll_y;
1839
1840                 /* Queue an idle to handle the motion.  We do this because
1841                  * handling any selection events in the motion could be slower
1842                  * than new motion events reach us.  We always put it in the
1843                  * idle to make sure we catch up and don't visibly lag the
1844                  * mouse. */
1845                 if (!view->selection_update_id)
1846                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
1847
1848                 return TRUE;
1849         } else if (view->pressed_button == 2) {
1850                 if (!view->drag_info.in_drag) {
1851                         gboolean start;
1852
1853                         start = gtk_drag_check_threshold (widget,
1854                                                           view->drag_info.start.x,
1855                                                           view->drag_info.start.y,
1856                                                           event->x_root,
1857                                                           event->y_root);
1858                         view->drag_info.in_drag = start;
1859                 }
1860
1861                 if (view->drag_info.in_drag) {
1862                         int dx, dy;
1863                         gdouble dhadj_value, dvadj_value;
1864
1865                         dx = event->x_root - view->drag_info.start.x;
1866                         dy = event->y_root - view->drag_info.start.y;
1867
1868                         dhadj_value = view->hadjustment->page_size *
1869                                       (gdouble)dx / widget->allocation.width;
1870                         dvadj_value = view->vadjustment->page_size *
1871                                       (gdouble)dy / widget->allocation.height;
1872
1873                         /* clamp scrolling to visible area */
1874                         gtk_adjustment_set_value (view->hadjustment,
1875                                                   MIN(view->drag_info.hadj - dhadj_value,
1876                                                       view->hadjustment->upper -
1877                                                       view->hadjustment->page_size));
1878                         gtk_adjustment_set_value (view->vadjustment,
1879                                                   MIN(view->drag_info.vadj - dvadj_value,
1880                                                       view->vadjustment->upper -
1881                                                       view->vadjustment->page_size));
1882
1883                         return TRUE;
1884                 }
1885         /* For the Evince 0.4.x release, we limit links to un-rotated documents
1886          * only.
1887          */
1888         } else if (view->pressed_button <= 0 &&
1889                    view->rotation == 0) {
1890                 handle_link_over_xy (view, x, y);
1891                 return TRUE;
1892         }
1893
1894         return FALSE;
1895 }
1896
1897 static gboolean
1898 ev_view_button_release_event (GtkWidget      *widget,
1899                               GdkEventButton *event)
1900 {
1901         EvView *view = EV_VIEW (widget);
1902         EvLink *link;
1903
1904         if (view->pressed_button == 2) {
1905                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1906         }
1907
1908         if (view->document) {
1909                 link = ev_view_get_link_at_location (view, event->x, event->y);
1910         } else {
1911                 link = NULL;
1912         }
1913
1914         view->pressed_button = -1;
1915         view->drag_info.in_drag = FALSE;
1916
1917         if (view->selection_scroll_id) {
1918             g_source_remove (view->selection_scroll_id);
1919             view->selection_scroll_id = 0;
1920         }
1921         if (view->selection_update_id) {
1922             g_source_remove (view->selection_update_id);
1923             view->selection_update_id = 0;
1924         }
1925
1926         if (view->selection_info.selections) {
1927                 ev_view_update_primary_selection (view);
1928
1929                 if (view->selection_info.in_drag) {
1930                         clear_selection (view);
1931                         gtk_widget_queue_draw (widget);
1932                 }
1933
1934                 view->selection_info.in_drag = FALSE;
1935         } else if (link) {
1936                 ev_view_goto_link (view, link);
1937         } else if (view->presentation) {
1938                 switch (event->button) {
1939                 case 1:
1940                         ev_view_next_page (view);
1941                         return TRUE;
1942                 case 3:
1943                         ev_view_previous_page (view);
1944                         return TRUE;
1945                 }
1946         }
1947
1948         return FALSE;
1949 }
1950
1951 static gint
1952 ev_view_focus_in (GtkWidget     *widget,
1953                   GdkEventFocus *event)
1954 {
1955         if (EV_VIEW (widget)->pixbuf_cache)
1956                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1957         gtk_widget_queue_draw (widget);
1958
1959         return FALSE;
1960 }
1961
1962 static gint
1963 ev_view_focus_out (GtkWidget     *widget,
1964                      GdkEventFocus *event)
1965 {
1966         if (EV_VIEW (widget)->pixbuf_cache)
1967                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1968         gtk_widget_queue_draw (widget);
1969
1970         return FALSE;
1971 }
1972
1973 static gboolean
1974 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
1975 {
1976         EvView *view = EV_VIEW (widget);
1977
1978         ev_view_set_status (view, NULL);
1979
1980         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1981             view->cursor == EV_VIEW_CURSOR_IBEAM)
1982                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1983
1984         if (view->link_tooltip) {
1985                 view->hovered_link = NULL;
1986                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1987         }
1988
1989         return FALSE;
1990 }
1991
1992 static gboolean
1993 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
1994 {
1995         EvView *view = EV_VIEW (widget);
1996
1997         handle_link_over_xy (view, event->x, event->y);
1998
1999         return FALSE;
2000 }
2001
2002 static void
2003 ev_view_style_set (GtkWidget *widget,
2004                    GtkStyle  *old_style)
2005 {
2006         if (EV_VIEW (widget)->pixbuf_cache)
2007                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
2008
2009         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
2010 }
2011
2012 /*** Drawing ***/
2013
2014 static guint32
2015 ev_gdk_color_to_rgb (const GdkColor *color)
2016 {
2017   guint32 result;
2018   result = (0xff0000 | (color->red & 0xff00));
2019   result <<= 8;
2020   result |= ((color->green & 0xff00) | (color->blue >> 8));
2021   return result;
2022 }
2023
2024 static void
2025 draw_rubberband (GtkWidget *widget, GdkWindow *window,
2026                  const GdkRectangle *rect, guchar alpha)
2027 {
2028         GdkGC *gc;
2029         GdkPixbuf *pixbuf;
2030         GdkColor *fill_color_gdk;
2031         guint fill_color;
2032
2033         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
2034         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
2035
2036         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
2037                                  rect->width, rect->height);
2038         gdk_pixbuf_fill (pixbuf, fill_color);
2039
2040         gdk_draw_pixbuf (window, NULL, pixbuf,
2041                          0, 0,
2042                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2043                          rect->width, rect->height,
2044                          GDK_RGB_DITHER_NONE,
2045                          0, 0);
2046
2047         g_object_unref (pixbuf);
2048
2049         gc = gdk_gc_new (window);
2050         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2051         gdk_draw_rectangle (window, gc, FALSE,
2052                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2053                             rect->width - 1,
2054                             rect->height - 1);
2055         g_object_unref (gc);
2056
2057         gdk_color_free (fill_color_gdk);
2058 }
2059
2060
2061 static void
2062 highlight_find_results (EvView *view, int page)
2063 {
2064         EvDocumentFind *find;
2065         int i, results = 0;
2066
2067         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2068
2069         find = EV_DOCUMENT_FIND (view->document);
2070
2071         results = ev_document_find_get_n_results (find, page);
2072
2073         for (i = 0; i < results; i++) {
2074                 EvRectangle rectangle;
2075                 GdkRectangle view_rectangle;
2076                 guchar alpha;
2077
2078                 if (i == view->find_result && page == view->current_page) {
2079                         alpha = 0x90;
2080                 } else {
2081                         alpha = 0x20;
2082                 }
2083
2084                 ev_document_find_get_result (find, page, i, &rectangle);
2085                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2086                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2087                                  &view_rectangle, alpha);
2088         }
2089 }
2090
2091 static void
2092 draw_loading_text (EvView       *view,
2093                    GdkRectangle *page_area,
2094                    GdkRectangle *expose_area)
2095 {
2096         PangoLayout *layout;
2097         PangoFontDescription *font_desc;
2098         PangoRectangle logical_rect;
2099         double real_scale;
2100         int target_width;
2101
2102         const char *loading_text = _("Loading...");
2103
2104         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2105
2106         font_desc = pango_font_description_new ();
2107
2108
2109         /* We set the font to be 10 points, get the size, and scale appropriately */
2110         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2111         pango_layout_set_font_description (layout, font_desc);
2112         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2113
2114         /* Make sure we fit the middle of the page */
2115         target_width = MAX (page_area->width / 2, 1);
2116         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2117         pango_font_description_set_size (font_desc, (int)real_scale);
2118         pango_layout_set_font_description (layout, font_desc);
2119         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2120
2121         gtk_paint_layout (GTK_WIDGET (view)->style,
2122                           GTK_WIDGET (view)->window,
2123                           GTK_WIDGET_STATE (view),
2124                           FALSE,
2125                           page_area,
2126                           GTK_WIDGET (view),
2127                           NULL,
2128                           page_area->x + (target_width/2),
2129                           page_area->y + (page_area->height - logical_rect.height) / 2,
2130                           layout);
2131
2132         pango_font_description_free (font_desc);
2133         g_object_unref (layout);
2134 }
2135
2136 static void
2137 draw_one_page (EvView          *view,
2138                gint             page,
2139                GdkRectangle    *page_area,
2140                GtkBorder       *border,
2141                GdkRectangle    *expose_area)
2142 {
2143         gint width, height;
2144         GdkPixbuf *current_pixbuf;
2145         GdkRectangle overlap;
2146         GdkRectangle real_page_area;
2147         EvViewSelection *selection;
2148
2149         g_assert (view->document);
2150         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2151                 return;
2152
2153         selection = find_selection_for_page (view, page);
2154         ev_page_cache_get_size (view->page_cache,
2155                                 page, view->rotation,
2156                                 view->scale,
2157                                 &width, &height);
2158         /* Render the document itself */
2159         real_page_area = *page_area;
2160
2161         real_page_area.x += border->left;
2162         real_page_area.y += border->top;
2163         real_page_area.width -= (border->left + border->right);
2164         real_page_area.height -= (border->top + border->bottom);
2165
2166         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2167                                          GTK_WIDGET (view),
2168                                          page_area, border);
2169
2170         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2171                 GdkPixbuf *selection_pixbuf = NULL;
2172                 GdkPixbuf *scaled_image;
2173                 GdkPixbuf *scaled_selection;
2174
2175                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2176
2177                 /* Get the selection pixbuf iff we have something to draw */
2178                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2179                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2180                                                                                  page,
2181                                                                                  view->scale,
2182                                                                                  NULL);
2183
2184                 if (current_pixbuf == NULL)
2185                         scaled_image = NULL;
2186                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2187                          height == gdk_pixbuf_get_height (current_pixbuf))
2188                         scaled_image = g_object_ref (current_pixbuf);
2189                 else
2190                         /* FIXME: We don't want to scale the whole area, just the right
2191                          * area of it */
2192                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2193                                                                 width, height,
2194                                                                 GDK_INTERP_NEAREST);
2195
2196                 if (selection_pixbuf == NULL)
2197                         scaled_selection = NULL;
2198                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2199                          height == gdk_pixbuf_get_height (selection_pixbuf))
2200                         scaled_selection = g_object_ref (selection_pixbuf);
2201                 else
2202                         /* FIXME: We don't want to scale the whole area, just the right
2203                          * area of it */
2204                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2205                                                                     width, height,
2206                                                                     GDK_INTERP_NEAREST);
2207
2208                 if (scaled_image) {
2209                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2210                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2211                                          scaled_image,
2212                                          overlap.x - real_page_area.x,
2213                                          overlap.y - real_page_area.y,
2214                                          overlap.x, overlap.y,
2215                                          overlap.width, overlap.height,
2216                                          GDK_RGB_DITHER_NORMAL,
2217                                          0, 0);
2218                         g_object_unref (scaled_image);
2219                 } else {
2220                         draw_loading_text (view,
2221                                            &real_page_area,
2222                                            expose_area);
2223                 }
2224
2225                 if (scaled_selection) {
2226                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2227                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2228                                          scaled_selection,
2229                                          overlap.x - real_page_area.x,
2230                                          overlap.y - real_page_area.y,
2231                                          overlap.x, overlap.y,
2232                                          overlap.width, overlap.height,
2233                                          GDK_RGB_DITHER_NORMAL,
2234                                          0, 0);
2235                         g_object_unref (scaled_selection);
2236                 }
2237         }
2238 }
2239
2240 /*** GObject functions ***/
2241
2242 static void
2243 ev_view_finalize (GObject *object)
2244 {
2245         EvView *view = EV_VIEW (object);
2246
2247         LOG ("Finalize");
2248
2249         g_free (view->status);
2250         g_free (view->find_status);
2251
2252         clear_selection (view);
2253
2254         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2255 }
2256
2257 static void
2258 ev_view_destroy (GtkObject *object)
2259 {
2260         EvView *view = EV_VIEW (object);
2261
2262         if (view->document) {
2263                 g_object_unref (view->document);
2264                 view->document = NULL;
2265         }
2266
2267         if (view->pixbuf_cache) {
2268                 g_object_unref (view->pixbuf_cache);
2269                 view->pixbuf_cache = NULL;
2270         }
2271
2272         if (view->link_tooltip) {
2273                 gtk_widget_destroy (view->link_tooltip);
2274         }
2275
2276         if (view->selection_scroll_id) {
2277             g_source_remove (view->selection_scroll_id);
2278             view->selection_scroll_id = 0;
2279         }
2280
2281         if (view->selection_update_id) {
2282             g_source_remove (view->selection_update_id);
2283             view->selection_update_id = 0;
2284         }
2285
2286         ev_view_set_scroll_adjustments (view, NULL, NULL);
2287
2288         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
2289 }
2290
2291 static void
2292 ev_view_set_property (GObject      *object,
2293                       guint         prop_id,
2294                       const GValue *value,
2295                       GParamSpec   *pspec)
2296 {
2297         EvView *view = EV_VIEW (object);
2298
2299         switch (prop_id)
2300         {
2301         case PROP_CONTINUOUS:
2302                 ev_view_set_continuous (view, g_value_get_boolean (value));
2303                 break;
2304         case PROP_DUAL_PAGE:
2305                 ev_view_set_dual_page (view, g_value_get_boolean (value));
2306                 break;
2307         case PROP_FULLSCREEN:
2308                 ev_view_set_fullscreen (view, g_value_get_boolean (value));
2309                 break;
2310         case PROP_PRESENTATION:
2311                 ev_view_set_presentation (view, g_value_get_boolean (value));
2312                 break;
2313         case PROP_SIZING_MODE:
2314                 ev_view_set_sizing_mode (view, g_value_get_enum (value));
2315                 break;
2316         case PROP_ZOOM:
2317                 ev_view_set_zoom (view, g_value_get_double (value), FALSE);
2318                 break;
2319         case PROP_ROTATION:
2320                 ev_view_set_rotation (view, g_value_get_int (value));
2321                 break;
2322         default:
2323                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2324         }
2325 }
2326
2327 static AtkObject *
2328 ev_view_get_accessible (GtkWidget *widget)
2329 {
2330         static gboolean first_time = TRUE;
2331
2332         if (first_time) {
2333                 AtkObjectFactory *factory;
2334                 AtkRegistry *registry;
2335                 GType derived_type;
2336                 GType derived_atk_type;
2337
2338                 /*
2339                  * Figure out whether accessibility is enabled by looking at the
2340                  * type of the accessible object which would be created for
2341                  * the parent type of EvView.
2342                  */
2343                 derived_type = g_type_parent (EV_TYPE_VIEW);
2344
2345                 registry = atk_get_default_registry ();
2346                 factory = atk_registry_get_factory (registry,
2347                                                     derived_type);
2348                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
2349                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
2350                         atk_registry_set_factory_type (registry,
2351                                                        EV_TYPE_VIEW,
2352                                                        ev_view_accessible_factory_get_type ());
2353                 first_time = FALSE;
2354         }
2355         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
2356 }
2357
2358 static void
2359 ev_view_get_property (GObject *object,
2360                       guint prop_id,
2361                       GValue *value,
2362                       GParamSpec *pspec)
2363 {
2364         EvView *view = EV_VIEW (object);
2365
2366         switch (prop_id)
2367         {
2368         case PROP_STATUS:
2369                 g_value_set_string (value, view->status);
2370                 break;
2371         case PROP_FIND_STATUS:
2372                 g_value_set_string (value, view->status);
2373                 break;
2374         case PROP_CONTINUOUS:
2375                 g_value_set_boolean (value, view->continuous);
2376                 break;
2377         case PROP_DUAL_PAGE:
2378                 g_value_set_boolean (value, view->dual_page);
2379                 break;
2380         case PROP_FULLSCREEN:
2381                 g_value_set_boolean (value, view->fullscreen);
2382                 break;
2383         case PROP_PRESENTATION:
2384                 g_value_set_boolean (value, view->presentation);
2385                 break;
2386         case PROP_SIZING_MODE:
2387                 g_value_set_enum (value, view->sizing_mode);
2388                 break;
2389         case PROP_ZOOM:
2390                 g_value_set_double (value, view->scale);
2391                 break;
2392         case PROP_ROTATION:
2393                 g_value_set_int (value, view->rotation);
2394                 break;
2395         case PROP_HAS_SELECTION:
2396                 g_value_set_boolean (value,
2397                                      view->selection_info.selections != NULL);
2398                 break;
2399         default:
2400                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2401         }
2402 }
2403
2404 static void
2405 ev_view_class_init (EvViewClass *class)
2406 {
2407         GObjectClass *object_class = G_OBJECT_CLASS (class);
2408         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
2409         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
2410         GtkBindingSet *binding_set;
2411
2412         object_class->finalize = ev_view_finalize;
2413         object_class->set_property = ev_view_set_property;
2414         object_class->get_property = ev_view_get_property;
2415
2416         widget_class->expose_event = ev_view_expose_event;
2417         widget_class->button_press_event = ev_view_button_press_event;
2418         widget_class->motion_notify_event = ev_view_motion_notify_event;
2419         widget_class->button_release_event = ev_view_button_release_event;
2420         widget_class->focus_in_event = ev_view_focus_in;
2421         widget_class->focus_out_event = ev_view_focus_out;
2422         widget_class->get_accessible = ev_view_get_accessible;
2423         widget_class->size_request = ev_view_size_request;
2424         widget_class->size_allocate = ev_view_size_allocate;
2425         widget_class->realize = ev_view_realize;
2426         widget_class->scroll_event = ev_view_scroll_event;
2427         widget_class->enter_notify_event = ev_view_enter_notify_event;
2428         widget_class->leave_notify_event = ev_view_leave_notify_event;
2429         widget_class->style_set = ev_view_style_set;
2430         widget_class->drag_data_get = ev_view_drag_data_get;
2431         widget_class->popup_menu = ev_view_popup_menu;
2432         gtk_object_class->destroy = ev_view_destroy;
2433
2434         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
2435         class->binding_activated = ev_view_binding_activated;
2436
2437         widget_class->set_scroll_adjustments_signal =
2438             g_signal_new ("set-scroll-adjustments",
2439                           G_OBJECT_CLASS_TYPE (object_class),
2440                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2441                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
2442                           NULL, NULL,
2443                           ev_marshal_VOID__OBJECT_OBJECT,
2444                           G_TYPE_NONE, 2,
2445                           GTK_TYPE_ADJUSTMENT,
2446                           GTK_TYPE_ADJUSTMENT);
2447
2448         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
2449                          G_TYPE_FROM_CLASS (object_class),
2450                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2451                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
2452                          NULL, NULL,
2453                          ev_marshal_VOID__ENUM_BOOLEAN,
2454                          G_TYPE_NONE, 2,
2455                          GTK_TYPE_SCROLL_TYPE,
2456                          G_TYPE_BOOLEAN);
2457
2458         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
2459                          G_TYPE_FROM_CLASS (object_class),
2460                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2461                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
2462                          NULL, NULL,
2463                          ev_marshal_VOID__VOID,
2464                          G_TYPE_NONE, 0, G_TYPE_NONE);
2465         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
2466                          G_TYPE_FROM_CLASS (object_class),
2467                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2468                          G_STRUCT_OFFSET (EvViewClass, external_link),
2469                          NULL, NULL,
2470                          g_cclosure_marshal_VOID__OBJECT,
2471                          G_TYPE_NONE, 1,
2472                          G_TYPE_OBJECT);
2473         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
2474                          G_TYPE_FROM_CLASS (object_class),
2475                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2476                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
2477                          NULL, NULL,
2478                          g_cclosure_marshal_VOID__OBJECT,
2479                          G_TYPE_NONE, 1,
2480                          G_TYPE_OBJECT);
2481
2482         g_object_class_install_property (object_class,
2483                                          PROP_STATUS,
2484                                          g_param_spec_string ("status",
2485                                                               "Status Message",
2486                                                               "The status message",
2487                                                               NULL,
2488                                                               G_PARAM_READABLE));
2489
2490         g_object_class_install_property (object_class,
2491                                          PROP_FIND_STATUS,
2492                                          g_param_spec_string ("find-status",
2493                                                               "Find Status Message",
2494                                                               "The find status message",
2495                                                               NULL,
2496                                                               G_PARAM_READABLE));
2497
2498         g_object_class_install_property (object_class,
2499                                          PROP_CONTINUOUS,
2500                                          g_param_spec_boolean ("continuous",
2501                                                                "Continuous",
2502                                                                "Continuous scrolling mode",
2503                                                                TRUE,
2504                                                                G_PARAM_READWRITE));
2505
2506         g_object_class_install_property (object_class,
2507                                          PROP_DUAL_PAGE,
2508                                          g_param_spec_boolean ("dual-page",
2509                                                                "Dual Page",
2510                                                                "Two pages visible at once",
2511                                                                FALSE,
2512                                                                G_PARAM_READWRITE));
2513         g_object_class_install_property (object_class,
2514                                          PROP_FULLSCREEN,
2515                                          g_param_spec_boolean ("fullscreen",
2516                                                                "Full Screen",
2517                                                                "Draw page in a fullscreen fashion",
2518                                                                FALSE,
2519                                                                G_PARAM_READWRITE));
2520         g_object_class_install_property (object_class,
2521                                          PROP_PRESENTATION,
2522                                          g_param_spec_boolean ("presentation",
2523                                                                "Presentation",
2524                                                                "Draw page in presentation mode",
2525                                                                TRUE,
2526                                                                G_PARAM_READWRITE));
2527
2528         g_object_class_install_property (object_class,
2529                                          PROP_SIZING_MODE,
2530                                          g_param_spec_enum ("sizing-mode",
2531                                                             "Sizing Mode",
2532                                                             "Sizing Mode",
2533                                                             EV_TYPE_SIZING_MODE,
2534                                                             EV_SIZING_FIT_WIDTH,
2535                                                             G_PARAM_READWRITE));
2536
2537         g_object_class_install_property (object_class,
2538                                          PROP_ZOOM,
2539                                          g_param_spec_double ("zoom",
2540                                                               "Zoom factor",
2541                                                                "Zoom factor",
2542                                                                MIN_SCALE,
2543                                                                MAX_SCALE,
2544                                                                1.0,
2545                                                                G_PARAM_READWRITE));
2546         g_object_class_install_property (object_class,
2547                                          PROP_ROTATION,
2548                                          g_param_spec_double ("rotation",
2549                                                               "Rotation",
2550                                                                "Rotation",
2551                                                                0,
2552                                                                360,
2553                                                                0,
2554                                                                G_PARAM_READWRITE));
2555         g_object_class_install_property (object_class,
2556                                          PROP_HAS_SELECTION,
2557                                          g_param_spec_boolean ("has-selection",
2558                                                                "Has selection",
2559                                                                "The view has selections",
2560                                                                FALSE,
2561                                                                G_PARAM_READABLE));
2562
2563         binding_set = gtk_binding_set_by_class (class);
2564
2565         add_scroll_binding_keypad (binding_set, GDK_Left,  0, GTK_SCROLL_STEP_BACKWARD, TRUE);
2566         add_scroll_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_STEP_FORWARD,  TRUE);
2567         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, TRUE);
2568         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  TRUE);
2569         add_scroll_binding_keypad (binding_set, GDK_Up,    0, GTK_SCROLL_STEP_BACKWARD, FALSE);
2570         add_scroll_binding_keypad (binding_set, GDK_Down,  0, GTK_SCROLL_STEP_FORWARD,  FALSE);
2571         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, FALSE);
2572         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  FALSE);
2573 }
2574
2575 static void
2576 ev_view_init (EvView *view)
2577 {
2578         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
2579
2580         view->spacing = 5;
2581         view->scale = 1.0;
2582         view->current_page = 0;
2583         view->pressed_button = -1;
2584         view->cursor = EV_VIEW_CURSOR_NORMAL;
2585         view->drag_info.in_drag = FALSE;
2586         view->selection_info.selections = NULL;
2587         view->selection_info.in_selection = FALSE;
2588         view->selection_info.in_drag = FALSE;
2589         view->selection_mode = EV_VIEW_SELECTION_TEXT;
2590         view->continuous = TRUE;
2591         view->dual_page = FALSE;
2592         view->presentation = FALSE;
2593         view->fullscreen = FALSE;
2594         view->sizing_mode = EV_SIZING_FIT_WIDTH;
2595         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2596 }
2597
2598 /*** Callbacks ***/
2599
2600 static void
2601 find_changed_cb (EvDocument *document, int page, EvView *view)
2602 {
2603         double percent;
2604         int n_pages;
2605
2606         percent = ev_document_find_get_progress
2607                         (EV_DOCUMENT_FIND (view->document));
2608         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2609         jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
2610         jump_to_find_result (view);
2611         update_find_status_message (view, percent * n_pages >= n_pages - 1 );
2612         if (view->current_page == page)
2613                 gtk_widget_queue_draw (GTK_WIDGET (view));
2614 }
2615
2616 static void
2617 job_finished_cb (EvPixbufCache *pixbuf_cache,
2618                  EvView        *view)
2619 {
2620         gtk_widget_queue_draw (GTK_WIDGET (view));
2621 }
2622
2623 static void
2624 page_changed_cb (EvPageCache *page_cache,
2625                  int          new_page,
2626                  EvView      *view)
2627 {
2628         if (view->current_page != new_page) {
2629
2630                 view->current_page = new_page;
2631                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2632                 gtk_widget_queue_resize (GTK_WIDGET (view));
2633
2634                 if (EV_IS_DOCUMENT_FIND (view->document)) {
2635                         view->find_result = 0;
2636                         update_find_status_message (view, TRUE);
2637                 }
2638         }
2639 }
2640
2641 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
2642                                          EvView *view)
2643 {
2644         int dx = 0, dy = 0;
2645
2646         if (! GTK_WIDGET_REALIZED (view))
2647                 return;
2648
2649         if (view->hadjustment) {
2650                 dx = view->scroll_x - (int) view->hadjustment->value;
2651                 view->scroll_x = (int) view->hadjustment->value;
2652         } else {
2653                 view->scroll_x = 0;
2654         }
2655
2656         if (view->vadjustment) {
2657                 dy = view->scroll_y - (int) view->vadjustment->value;
2658                 view->scroll_y = (int) view->vadjustment->value;
2659         } else {
2660                 view->scroll_y = 0;
2661         }
2662
2663
2664         if (view->pending_resize)
2665                 gtk_widget_queue_draw (GTK_WIDGET (view));
2666         else
2667                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
2668
2669
2670         if (view->document)
2671                 view_update_range_and_current_page (view);
2672 }
2673
2674 GtkWidget*
2675 ev_view_new (void)
2676 {
2677         GtkWidget *view;
2678
2679         view = g_object_new (EV_TYPE_VIEW, NULL);
2680
2681         return view;
2682 }
2683
2684 static void
2685 setup_caches (EvView *view)
2686 {
2687         view->page_cache = ev_page_cache_get (view->document);
2688         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
2689         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
2690         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
2691 }
2692
2693 static void
2694 clear_caches (EvView *view)
2695 {
2696         if (view->pixbuf_cache) {
2697                 g_object_unref (view->pixbuf_cache);
2698                 view->pixbuf_cache = NULL;
2699         }
2700
2701         if (view->page_cache) {
2702                 view->page_cache = NULL;
2703         }
2704 }
2705
2706 void
2707 ev_view_set_loading (EvView       *view,
2708                      gboolean      loading)
2709 {
2710         view->loading = loading;
2711         gtk_widget_queue_draw (GTK_WIDGET (view));
2712 }
2713
2714 void
2715 ev_view_set_document (EvView     *view,
2716                       EvDocument *document)
2717 {
2718         g_return_if_fail (EV_IS_VIEW (view));
2719
2720         view->loading = FALSE;
2721
2722         if (document != view->document) {
2723                 clear_caches (view);
2724
2725                 if (view->document) {
2726                         g_signal_handlers_disconnect_by_func (view->document,
2727                                                               find_changed_cb,
2728                                                               view);
2729                         g_object_unref (view->document);
2730                         view->page_cache = NULL;
2731
2732                 }
2733
2734                 view->document = document;
2735                 view->find_result = 0;
2736
2737                 if (view->document) {
2738                         g_object_ref (view->document);
2739                         if (EV_IS_DOCUMENT_FIND (view->document)) {
2740                                 g_signal_connect (view->document,
2741                                                   "find_changed",
2742                                                   G_CALLBACK (find_changed_cb),
2743                                                   view);
2744                         }
2745
2746                         setup_caches (view);
2747                 }
2748
2749                 gtk_widget_queue_resize (GTK_WIDGET (view));
2750         }
2751 }
2752
2753 /*** Zoom and sizing mode ***/
2754
2755 #define EPSILON 0.0000001
2756 void
2757 ev_view_set_zoom (EvView   *view,
2758                   double    factor,
2759                   gboolean  relative)
2760 {
2761         double scale;
2762
2763         if (relative)
2764                 scale = view->scale * factor;
2765         else
2766                 scale = factor;
2767
2768         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
2769
2770         if (ABS (view->scale - scale) < EPSILON)
2771                 return;
2772
2773         view->scale = scale;
2774         view->pending_resize = TRUE;
2775
2776         gtk_widget_queue_resize (GTK_WIDGET (view));
2777
2778         g_object_notify (G_OBJECT (view), "zoom");
2779 }
2780
2781 double
2782 ev_view_get_zoom (EvView *view)
2783 {
2784         return view->scale;
2785 }
2786
2787 gboolean
2788 ev_view_get_continuous (EvView *view)
2789 {
2790         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2791
2792         return view->continuous;
2793 }
2794
2795 void
2796 ev_view_set_continuous (EvView   *view,
2797                         gboolean  continuous)
2798 {
2799         g_return_if_fail (EV_IS_VIEW (view));
2800
2801         continuous = continuous != FALSE;
2802
2803         if (view->continuous != continuous) {
2804                 view->continuous = continuous;
2805                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2806                 gtk_widget_queue_resize (GTK_WIDGET (view));
2807         }
2808
2809         g_object_notify (G_OBJECT (view), "continuous");
2810 }
2811
2812 gboolean
2813 ev_view_get_dual_page (EvView *view)
2814 {
2815         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2816
2817         return view->dual_page;
2818 }
2819
2820 void
2821 ev_view_set_dual_page (EvView   *view,
2822                        gboolean  dual_page)
2823 {
2824         g_return_if_fail (EV_IS_VIEW (view));
2825
2826         dual_page = dual_page != FALSE;
2827
2828         if (view->dual_page == dual_page)
2829                 return;
2830
2831         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2832         view->dual_page = dual_page;
2833         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
2834          * preload_cache_size to be 2 if dual_page is set.
2835          */
2836         gtk_widget_queue_resize (GTK_WIDGET (view));
2837
2838         g_object_notify (G_OBJECT (view), "dual-page");
2839 }
2840
2841 void
2842 ev_view_set_fullscreen (EvView   *view,
2843                          gboolean  fullscreen)
2844 {
2845         g_return_if_fail (EV_IS_VIEW (view));
2846
2847         fullscreen = fullscreen != FALSE;
2848
2849         if (view->fullscreen == fullscreen)
2850                 return;
2851
2852         view->fullscreen = fullscreen;
2853         gtk_widget_queue_resize (GTK_WIDGET (view));
2854
2855         g_object_notify (G_OBJECT (view), "fullscreen");
2856 }
2857
2858 gboolean
2859 ev_view_get_fullscreen (EvView *view)
2860 {
2861         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2862
2863         return view->fullscreen;
2864 }
2865
2866 void
2867 ev_view_set_presentation (EvView   *view,
2868                           gboolean  presentation)
2869 {
2870         g_return_if_fail (EV_IS_VIEW (view));
2871
2872         presentation = presentation != FALSE;
2873
2874         if (view->presentation == presentation)
2875                 return;
2876
2877         view->presentation = presentation;
2878         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2879         gtk_widget_queue_resize (GTK_WIDGET (view));
2880
2881         if (GTK_WIDGET_REALIZED (view)) {
2882                 if (view->presentation)
2883                         gdk_window_set_background (GTK_WIDGET(view)->window,
2884                                                    &GTK_WIDGET (view)->style->black);
2885                 else
2886                         gdk_window_set_background (GTK_WIDGET(view)->window,
2887                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
2888         }
2889
2890
2891         g_object_notify (G_OBJECT (view), "presentation");
2892 }
2893
2894 gboolean
2895 ev_view_get_presentation (EvView *view)
2896 {
2897         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2898
2899         return view->presentation;
2900 }
2901
2902 void
2903 ev_view_set_sizing_mode (EvView       *view,
2904                          EvSizingMode  sizing_mode)
2905 {
2906         g_return_if_fail (EV_IS_VIEW (view));
2907
2908         if (view->sizing_mode == sizing_mode)
2909                 return;
2910
2911         view->sizing_mode = sizing_mode;
2912         gtk_widget_queue_resize (GTK_WIDGET (view));
2913
2914         g_object_notify (G_OBJECT (view), "sizing-mode");
2915 }
2916
2917 EvSizingMode
2918 ev_view_get_sizing_mode (EvView *view)
2919 {
2920         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
2921
2922         return view->sizing_mode;
2923 }
2924
2925 gboolean
2926 ev_view_can_zoom_in (EvView *view)
2927 {
2928         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
2929 }
2930
2931 gboolean
2932 ev_view_can_zoom_out (EvView *view)
2933 {
2934         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
2935 }
2936
2937 void
2938 ev_view_zoom_in (EvView *view)
2939 {
2940         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2941
2942         view->pending_scroll = SCROLL_TO_CENTER;
2943         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
2944 }
2945
2946 void
2947 ev_view_zoom_out (EvView *view)
2948 {
2949         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2950
2951         view->pending_scroll = SCROLL_TO_CENTER;
2952         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
2953 }
2954
2955 void
2956 ev_view_rotate_right (EvView *view)
2957 {
2958         int rotation = view->rotation + 90;
2959
2960         if (rotation >= 360) {
2961                 rotation -= 360;
2962         }
2963
2964         ev_view_set_rotation (view, rotation);
2965 }
2966
2967 void
2968 ev_view_rotate_left (EvView *view)
2969 {
2970         int rotation = view->rotation - 90;
2971
2972         if (rotation < 0) {
2973                 rotation += 360;
2974         }
2975
2976         ev_view_set_rotation (view, rotation);
2977 }
2978
2979 void
2980 ev_view_set_rotation (EvView *view, int rotation)
2981 {
2982         view->rotation = rotation;
2983
2984         if (view->pixbuf_cache) {
2985                 ev_pixbuf_cache_clear (view->pixbuf_cache);
2986                 gtk_widget_queue_resize (GTK_WIDGET (view));
2987         }
2988
2989         if (rotation != 0)
2990                 clear_selection (view);
2991
2992         g_object_notify (G_OBJECT (view), "rotation");
2993 }
2994
2995 int
2996 ev_view_get_rotation (EvView *view)
2997 {
2998         return view->rotation;
2999 }
3000
3001 static double
3002 zoom_for_size_fit_width (int doc_width,
3003                          int doc_height,
3004                          int target_width,
3005                          int target_height,
3006                          int vsb_width)
3007 {
3008         double scale;
3009
3010         scale = (double)target_width / doc_width;
3011
3012         if (doc_height * scale > target_height)
3013                 scale = (double) (target_width - vsb_width) / doc_width;
3014
3015         return scale;
3016 }
3017
3018 static double
3019 zoom_for_size_fit_height (int doc_width,
3020                           int doc_height,
3021                           int target_width,
3022                           int target_height,
3023                           int vsb_height)
3024 {
3025         double scale;
3026
3027         scale = (double)target_height / doc_height;
3028
3029         if (doc_width * scale > target_width)
3030                 scale = (double) (target_height - vsb_height) / doc_height;
3031
3032         return scale;
3033 }
3034
3035 static double
3036 zoom_for_size_best_fit (int doc_width,
3037                         int doc_height,
3038                         int target_width,
3039                         int target_height,
3040                         int vsb_width,
3041                         int hsb_width)
3042 {
3043         double w_scale;
3044         double h_scale;
3045
3046         w_scale = (double)target_width / doc_width;
3047         h_scale = (double)target_height / doc_height;
3048
3049         if (doc_height * w_scale > target_height)
3050                 w_scale = (double) (target_width - vsb_width) / doc_width;
3051         if (doc_width * h_scale > target_width)
3052                 h_scale = (double) (target_height - hsb_width) / doc_height;
3053
3054         return MIN (w_scale, h_scale);
3055 }
3056
3057
3058 static void
3059 ev_view_zoom_for_size_presentation (EvView *view,
3060                                     int     width,
3061                                     int     height)
3062 {
3063         int doc_width, doc_height;
3064         gdouble scale;
3065
3066         ev_page_cache_get_size (view->page_cache,
3067                                 view->current_page,
3068                                 view->rotation,
3069                                 1.0,
3070                                 &doc_width,
3071                                 &doc_height);
3072         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3073         ev_view_set_zoom (view, scale, FALSE);
3074 }
3075
3076 static void
3077 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3078                            int     width,
3079                            int     height,
3080                            int     vsb_width,
3081                            int     hsb_height)
3082 {
3083         int doc_width, doc_height;
3084         GtkBorder border;
3085         gdouble scale;
3086
3087         ev_page_cache_get_max_width (view->page_cache,
3088                                      view->rotation,
3089                                      1.0,
3090                                      &doc_width);
3091         ev_page_cache_get_max_height (view->page_cache,
3092                                       view->rotation,
3093                                       1.0,
3094                                       &doc_height);
3095         compute_border (view, doc_width, doc_height, &border);
3096
3097         doc_width = doc_width * 2;
3098         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3099         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3100
3101         /* FIXME: We really need to calculate the overall height here, not the
3102          * page height.  We assume there's always a vertical scrollbar for
3103          * now.  We need to fix this. */
3104         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3105                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3106         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3107                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3108         else
3109                 g_assert_not_reached ();
3110
3111         ev_view_set_zoom (view, scale, FALSE);
3112 }
3113
3114 static void
3115 ev_view_zoom_for_size_continuous (EvView *view,
3116                                   int     width,
3117                                   int     height,
3118                                   int     vsb_width,
3119                                   int     hsb_height)
3120 {
3121         int doc_width, doc_height;
3122         GtkBorder border;
3123         gdouble scale;
3124
3125         ev_page_cache_get_max_width (view->page_cache,
3126                                      view->rotation,
3127                                      1.0,
3128                                      &doc_width);
3129         ev_page_cache_get_max_height (view->page_cache,
3130                                       view->rotation,
3131                                       1.0,
3132                                       &doc_height);
3133         compute_border (view, doc_width, doc_height, &border);
3134
3135         width -= (border.left + border.right + 2 * view->spacing);
3136         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3137
3138         /* FIXME: We really need to calculate the overall height here, not the
3139          * page height.  We assume there's always a vertical scrollbar for
3140          * now.  We need to fix this. */
3141         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3142                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3143         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3144                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3145         else
3146                 g_assert_not_reached ();
3147
3148         ev_view_set_zoom (view, scale, FALSE);
3149 }
3150
3151 static void
3152 ev_view_zoom_for_size_dual_page (EvView *view,
3153                                  int     width,
3154                                  int     height,
3155                                  int     vsb_width,
3156                                  int     hsb_height)
3157 {
3158         GtkBorder border;
3159         gint doc_width, doc_height;
3160         gdouble scale;
3161         gint other_page;
3162
3163         other_page = view->current_page ^ 1;
3164
3165         /* Find the largest of the two. */
3166         ev_page_cache_get_size (view->page_cache,
3167                                 view->current_page,
3168                                 view->rotation,
3169                                 1.0,
3170                                 &doc_width, &doc_height);
3171
3172         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
3173                 gint width_2, height_2;
3174                 ev_page_cache_get_size (view->page_cache,
3175                                         other_page,
3176                                         view->rotation,
3177                                         1.0,
3178                                         &width_2, &height_2);
3179                 if (width_2 > doc_width)
3180                         doc_width = width_2;
3181                 if (height_2 > doc_height)
3182                         doc_height = height_2;
3183         }
3184         compute_border (view, doc_width, doc_height, &border);
3185
3186         doc_width = doc_width * 2;
3187         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
3188         height -= (border.top + border.bottom + 2 * view->spacing);
3189
3190         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3191                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3192         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3193                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3194         else
3195                 g_assert_not_reached ();
3196
3197         ev_view_set_zoom (view, scale, FALSE);
3198 }
3199
3200 static void
3201 ev_view_zoom_for_size_single_page (EvView *view,
3202                                    int     width,
3203                                    int     height,
3204                                    int     vsb_width,
3205                                    int     hsb_height)
3206 {
3207         int doc_width, doc_height;
3208         GtkBorder border;
3209         gdouble scale;
3210
3211         ev_page_cache_get_size (view->page_cache,
3212                                 view->current_page,
3213                                 view->rotation,
3214                                 1.0,
3215                                 &doc_width,
3216                                 &doc_height);
3217         /* Get an approximate border */
3218         compute_border (view, width, height, &border);
3219
3220         width -= (border.left + border.right + 2 * view->spacing);
3221         height -= (border.top + border.bottom + 2 * view->spacing);
3222
3223         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3224                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3225         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3226                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3227         else
3228                 g_assert_not_reached ();
3229
3230         ev_view_set_zoom (view, scale, FALSE);
3231 }
3232
3233 void
3234 ev_view_set_zoom_for_size (EvView *view,
3235                            int     width,
3236                            int     height,
3237                            int     vsb_width,
3238                            int     hsb_height)
3239 {
3240         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
3241                           view->sizing_mode == EV_SIZING_BEST_FIT);
3242         g_return_if_fail (width >= 0);
3243         g_return_if_fail (height >= 0);
3244
3245         if (view->document == NULL)
3246                 return;
3247
3248         if (view->presentation)
3249                 ev_view_zoom_for_size_presentation (view, width, height);
3250         else if (view->continuous && view->dual_page)
3251                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
3252         else if (view->continuous)
3253                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
3254         else if (view->dual_page)
3255                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
3256         else
3257                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
3258 }
3259
3260 /*** Status text messages ***/
3261
3262 const char *
3263 ev_view_get_status (EvView *view)
3264 {
3265         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3266
3267         return view->status;
3268 }
3269
3270 static void
3271 ev_view_set_status (EvView *view, const char *message)
3272 {
3273         g_return_if_fail (EV_IS_VIEW (view));
3274
3275         if (message != view->status) {
3276                 g_free (view->status);
3277                 view->status = g_strdup (message);
3278                 g_object_notify (G_OBJECT (view), "status");
3279         }
3280 }
3281
3282 static void
3283 update_find_status_message (EvView *view, gboolean this_page)
3284 {
3285         char *message;
3286
3287         if (this_page) {
3288                 int results;
3289
3290                 results = ev_document_find_get_n_results
3291                                 (EV_DOCUMENT_FIND (view->document),
3292                                  view->current_page);
3293                 /* TRANS: Sometimes this could be better translated as
3294                    "%d hit(s) on this page".  Therefore this string
3295                    contains plural cases. */
3296                 message = g_strdup_printf (ngettext ("%d found on this page",
3297                                                      "%d found on this page",
3298                                                      results),
3299                                            results);
3300         } else {
3301                 double percent;
3302
3303                 percent = ev_document_find_get_progress
3304                                 (EV_DOCUMENT_FIND (view->document));
3305                 message = g_strdup_printf (_("%3d%% remaining to search"),
3306                                            (int) ((1.0 - percent) * 100));
3307
3308         }
3309         ev_view_set_find_status (view, message);
3310         g_free (message);
3311 }
3312
3313 const char *
3314 ev_view_get_find_status (EvView *view)
3315 {
3316         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3317
3318         return view->find_status;
3319 }
3320
3321 static void
3322 ev_view_set_find_status (EvView *view, const char *message)
3323 {
3324         g_return_if_fail (EV_IS_VIEW (view));
3325
3326         g_free (view->find_status);
3327         view->find_status = g_strdup (message);
3328         g_object_notify (G_OBJECT (view), "find-status");
3329 }
3330
3331 /*** Find ***/
3332
3333 static void
3334 jump_to_find_result (EvView *view)
3335 {
3336         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3337         EvRectangle rect;
3338         GdkRectangle view_rect;
3339         int n_results;
3340         int page = view->current_page;
3341
3342         n_results = ev_document_find_get_n_results (find, page);
3343
3344         if (n_results > 0  && view->find_result < n_results) {
3345                 ev_document_find_get_result
3346                         (find, page, view->find_result, &rect);
3347
3348                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
3349                 ensure_rectangle_is_visible (view, &view_rect);
3350         }
3351 }
3352
3353 /**
3354  * jump_to_find_page
3355  * @view: #EvView instance
3356  * @direction: Direction to look
3357  * @shift: Shift from current page
3358  *
3359  * Jumps to the first page that has occurences of searched word.
3360  * Uses a direction where to look and a shift from current page.
3361  *
3362  */
3363 static void
3364 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
3365 {
3366         int n_pages, i;
3367
3368         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3369
3370         for (i = 0; i < n_pages; i++) {
3371                 int has_results;
3372                 int page;
3373
3374                 if (direction == EV_VIEW_FIND_NEXT)
3375                         page = view->current_page + i;
3376                 else
3377                         page = view->current_page - i;
3378                 page += shift;
3379
3380                 if (page >= n_pages) {
3381                         page = page - n_pages;
3382                 }
3383                 if (page < 0)
3384                         page = page + n_pages;
3385
3386                 has_results = ev_document_find_page_has_results
3387                                 (EV_DOCUMENT_FIND (view->document), page);
3388                 if (has_results == -1) {
3389                         break;
3390                 } else if (has_results == 1) {
3391                         ev_page_cache_set_current_page (view->page_cache, page);
3392                         break;
3393                 }
3394         }
3395 }
3396
3397 gboolean
3398 ev_view_can_find_next (EvView *view)
3399 {
3400         if (EV_IS_DOCUMENT_FIND (view->document)) {
3401                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3402                 int i, n_pages;
3403
3404                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
3405                 for (i = 0; i < n_pages; i++) {
3406                         if (ev_document_find_get_n_results (find, i) > 0) {
3407                                 return TRUE;
3408                         }
3409                 }
3410         }
3411
3412         return FALSE;
3413 }
3414
3415 void
3416 ev_view_find_next (EvView *view)
3417 {
3418         int n_results, n_pages;
3419         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3420
3421         n_results = ev_document_find_get_n_results (find, view->current_page);
3422
3423         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3424
3425         view->find_result++;
3426
3427         if (view->find_result >= n_results) {
3428
3429                 view->find_result = 0;
3430                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
3431                 jump_to_find_result (view);
3432         } else {
3433                 jump_to_find_result (view);
3434                 gtk_widget_queue_draw (GTK_WIDGET (view));
3435         }
3436 }
3437
3438 void
3439 ev_view_find_previous (EvView *view)
3440 {
3441         int n_results, n_pages;
3442         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3443         EvPageCache *page_cache;
3444
3445         page_cache = ev_page_cache_get (view->document);
3446
3447         n_results = ev_document_find_get_n_results (find, view->current_page);
3448
3449         n_pages = ev_page_cache_get_n_pages (page_cache);
3450
3451         view->find_result--;
3452
3453         if (view->find_result < 0) {
3454
3455                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
3456                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
3457                 jump_to_find_result (view);
3458         } else {
3459                 jump_to_find_result (view);
3460                 gtk_widget_queue_draw (GTK_WIDGET (view));
3461         }
3462 }
3463
3464 /*** Selections ***/
3465
3466 /* compute_new_selection_rect/text calculates the area currently selected by
3467  * view_rect.  each handles a different mode;
3468  */
3469 static GList *
3470 compute_new_selection_rect (EvView       *view,
3471                             GdkPoint     *start,
3472                             GdkPoint     *stop)
3473 {
3474         GdkRectangle view_rect;
3475         int n_pages, i;
3476         GList *list = NULL;
3477
3478         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
3479
3480         view_rect.x = MIN (start->x, stop->x);
3481         view_rect.y = MIN (start->y, stop->y);
3482         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
3483         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
3484
3485         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3486
3487         for (i = 0; i < n_pages; i++) {
3488                 GdkRectangle page_area;
3489                 GtkBorder border;
3490
3491                 if (get_page_extents (view, i, &page_area, &border)) {
3492                         GdkRectangle overlap;
3493
3494                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
3495                                 EvViewSelection *selection;
3496
3497                                 selection = g_new0 (EvViewSelection, 1);
3498                                 selection->page = i;
3499                                 view_rect_to_doc_rect (view, &overlap, &page_area,
3500                                                        &(selection->rect));
3501
3502                                 list = g_list_append (list, selection);
3503                         }
3504                 }
3505         }
3506
3507         return list;
3508 }
3509
3510 static gboolean
3511 gdk_rectangle_point_in (GdkRectangle *rectangle,
3512                         GdkPoint     *point)
3513 {
3514         return rectangle->x <= point->x &&
3515                 rectangle->y <= point->y &&
3516                 point->x < rectangle->x + rectangle->width &&
3517                 point->y < rectangle->y + rectangle->height;
3518 }
3519
3520 static GList *
3521 compute_new_selection_text (EvView   *view,
3522                             GdkPoint *start,
3523                             GdkPoint *stop)
3524 {
3525         int n_pages, i, first, last;
3526         GList *list = NULL;
3527         EvViewSelection *selection;
3528         gint width, height;
3529         int start_page, end_page;
3530
3531         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
3532
3533         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3534
3535         /* First figure out the range of pages the selection
3536          * affects. */
3537         first = n_pages;
3538         last = 0;
3539         if (view->continuous) {
3540                 start_page = 0;
3541                 end_page = n_pages;
3542         } else if (view->dual_page) {
3543                 start_page = view->start_page;
3544                 end_page = view->end_page + 1;
3545         } else {
3546                 start_page = view->current_page;
3547                 end_page = view->current_page + 1;
3548         }
3549
3550         for (i = start_page; i < end_page; i++) {
3551                 GdkRectangle page_area;
3552                 GtkBorder border;
3553
3554                 get_page_extents (view, i, &page_area, &border);
3555                 if (gdk_rectangle_point_in (&page_area, start) ||
3556                     gdk_rectangle_point_in (&page_area, stop)) {
3557                         if (first == n_pages)
3558                                 first = i;
3559                         last = i;
3560                 }
3561
3562         }
3563
3564
3565
3566         /* Now create a list of EvViewSelection's for the affected
3567          * pages.  This could be an empty list, a list of just one
3568          * page or a number of pages.*/
3569         for (i = first; i < last + 1; i++) {
3570                 GdkRectangle page_area;
3571                 GtkBorder border;
3572                 GdkPoint *point;
3573
3574                 ev_page_cache_get_size (view->page_cache, i,
3575                                         view->rotation,
3576                                         1.0, &width, &height);
3577
3578                 selection = g_new0 (EvViewSelection, 1);
3579                 selection->page = i;
3580                 selection->rect.x1 = selection->rect.y1 = 0;
3581                 selection->rect.x2 = width;
3582                 selection->rect.y2 = height;
3583
3584                 get_page_extents (view, i, &page_area, &border);
3585
3586                 if (gdk_rectangle_point_in (&page_area, start))
3587                         point = start;
3588                 else
3589                         point = stop;
3590
3591                 if (i == first)
3592                         view_point_to_doc_point (view, point, &page_area,
3593                                                  &selection->rect.x1,
3594                                                  &selection->rect.y1);
3595
3596                 /* If the selection is contained within just one page,
3597                  * make sure we don't write 'start' into both points
3598                  * in selection->rect. */
3599                 if (first == last)
3600                         point = stop;
3601
3602                 if (i == last)
3603                         view_point_to_doc_point (view, point, &page_area,
3604                                                  &selection->rect.x2,
3605                                                  &selection->rect.y2);
3606
3607                 list = g_list_append (list, selection);
3608         }
3609
3610         return list;
3611 }
3612
3613 /* This function takes the newly calculated list, and figures out which regions
3614  * have changed.  It then queues a redraw approporiately.
3615  */
3616 static void
3617 merge_selection_region (EvView *view,
3618                         GList  *new_list)
3619 {
3620         GList *old_list;
3621         GList *new_list_ptr, *old_list_ptr;
3622
3623         /* Update the selection */
3624         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
3625         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3626         view->selection_info.selections = new_list;
3627         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
3628         g_object_notify (G_OBJECT (view), "has-selection");
3629
3630         new_list_ptr = new_list;
3631         old_list_ptr = old_list;
3632
3633         while (new_list_ptr || old_list_ptr) {
3634                 EvViewSelection *old_sel, *new_sel;
3635                 int cur_page;
3636                 GdkRegion *region = NULL;
3637
3638                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
3639                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
3640
3641                 /* Assume that the lists are in order, and we run through them
3642                  * comparing them, one page at a time.  We come out with the
3643                  * first page we see. */
3644                 if (new_sel && old_sel) {
3645                         if (new_sel->page < old_sel->page) {
3646                                 new_list_ptr = new_list_ptr->next;
3647                                 old_sel = NULL;
3648                         } else if (new_sel->page > old_sel->page) {
3649                                 old_list_ptr = old_list_ptr->next;
3650                                 new_sel = NULL;
3651                         } else {
3652                                 new_list_ptr = new_list_ptr->next;
3653                                 old_list_ptr = old_list_ptr->next;
3654                         }
3655                 } else if (new_sel) {
3656                         new_list_ptr = new_list_ptr->next;
3657                 } else if (old_sel) {
3658                         old_list_ptr = old_list_ptr->next;
3659                 }
3660
3661                 g_assert (new_sel || old_sel);
3662
3663                 /* is the page we're looking at on the screen?*/
3664                 cur_page = new_sel ? new_sel->page : old_sel->page;
3665                 if (cur_page < view->start_page || cur_page > view->end_page)
3666                         continue;
3667
3668                 /* seed the cache with a new page.  We are going to need the new
3669                  * region too. */
3670                 if (new_sel) {
3671                         GdkRegion *tmp_region = NULL;
3672                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
3673                                                               cur_page,
3674                                                               view->scale,
3675                                                               &tmp_region);
3676                         if (tmp_region) {
3677                                 new_sel->covered_region = gdk_region_copy (tmp_region);
3678                         }
3679                 }
3680
3681                 /* Now we figure out what needs redrawing */
3682                 if (old_sel && new_sel) {
3683                         if (old_sel->covered_region &&
3684                             new_sel->covered_region) {
3685                                 /* We only want to redraw the areas that have
3686                                  * changed, so we xor the old and new regions
3687                                  * and redraw if it's different */
3688                                 region = gdk_region_copy (old_sel->covered_region);
3689                                 gdk_region_xor (region, new_sel->covered_region);
3690                                 if (gdk_region_empty (region)) {
3691                                         gdk_region_destroy (region);
3692                                         region = NULL;
3693                                 }
3694                         } else if (old_sel->covered_region) {
3695                                 region = gdk_region_copy (old_sel->covered_region);
3696                         } else if (new_sel->covered_region) {
3697                                 region = gdk_region_copy (new_sel->covered_region);
3698                         }
3699                 } else if (old_sel && !new_sel) {
3700                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
3701                                 region = gdk_region_copy (old_sel->covered_region);
3702                         }
3703                 } else if (!old_sel && new_sel) {
3704                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
3705                                 region = gdk_region_copy (new_sel->covered_region);
3706                         }
3707                 } else {
3708                         g_assert_not_reached ();
3709                 }
3710
3711                 /* Redraw the damaged region! */
3712                 if (region) {
3713                         GdkRectangle page_area;
3714                         GtkBorder border;
3715
3716                         get_page_extents (view, cur_page, &page_area, &border);
3717                         gdk_region_offset (region,
3718                                            page_area.x + border.left - view->scroll_x,
3719                                            page_area.y + border.top - view->scroll_y);
3720                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
3721                         gdk_region_destroy (region);
3722                 }
3723         }
3724
3725         /* Free the old list, now that we're done with it. */
3726         g_list_foreach (old_list, (GFunc) selection_free, NULL);
3727 }
3728
3729 static void
3730 compute_selections (EvView   *view,
3731                     GdkPoint *start,
3732                     GdkPoint *stop)
3733 {
3734         GList *list;
3735
3736         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
3737                 list = compute_new_selection_rect (view, start, stop);
3738         else
3739                 list = compute_new_selection_text (view, start, stop);
3740         merge_selection_region (view, list);
3741 }
3742
3743 /* Free's the selection.  It's up to the caller to queue redraws if needed.
3744  */
3745 static void
3746 selection_free (EvViewSelection *selection)
3747 {
3748         if (selection->covered_region)
3749                 gdk_region_destroy (selection->covered_region);
3750         g_free (selection);
3751 }
3752
3753 static void
3754 clear_selection (EvView *view)
3755 {
3756         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3757         view->selection_info.selections = NULL;
3758         view->selection_info.in_selection = FALSE;
3759         g_object_notify (G_OBJECT (view), "has-selection");
3760 }
3761
3762
3763 void
3764 ev_view_select_all (EvView *view)
3765 {
3766         int n_pages, i;
3767
3768         /* Disable selection on rotated pages for the 0.4.0 series */
3769         if (view->rotation != 0)
3770                 return;
3771
3772         clear_selection (view);
3773
3774         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3775         for (i = 0; i < n_pages; i++) {
3776                 int width, height;
3777                 EvViewSelection *selection;
3778
3779                 ev_page_cache_get_size (view->page_cache,
3780                                         i,
3781                                         view->rotation,
3782                                         1.0, &width, &height);
3783
3784                 selection = g_new0 (EvViewSelection, 1);
3785                 selection->page = i;
3786                 selection->rect.x1 = selection->rect.y1 = 0;
3787                 selection->rect.x2 = width;
3788                 selection->rect.y2 = height;
3789
3790                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
3791         }
3792
3793         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
3794         g_object_notify (G_OBJECT (view), "has-selection");
3795         gtk_widget_queue_draw (GTK_WIDGET (view));
3796 }
3797
3798 gboolean
3799 ev_view_get_has_selection (EvView *view)
3800 {
3801         return view->selection_info.selections != NULL;
3802 }
3803
3804 static char *
3805 get_selected_text (EvView *ev_view)
3806 {
3807         GString *text;
3808         GList *l;
3809
3810         text = g_string_new (NULL);
3811
3812         ev_document_doc_mutex_lock ();
3813
3814         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
3815                 EvViewSelection *selection = (EvViewSelection *)l->data;
3816                 char *tmp;
3817
3818                 tmp = ev_document_get_text (ev_view->document,
3819                                             selection->page,
3820                                             &selection->rect);
3821                 g_string_append (text, tmp);
3822                 g_free (tmp);
3823         }
3824
3825         ev_document_doc_mutex_unlock ();
3826
3827         return g_string_free (text, FALSE);
3828 }
3829
3830 void
3831 ev_view_copy (EvView *ev_view)
3832 {
3833         GtkClipboard *clipboard;
3834         char *text;
3835
3836         if (!ev_document_can_get_text (ev_view->document)) {
3837                 return;
3838         }
3839
3840         text = get_selected_text (ev_view);
3841         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3842                                               GDK_SELECTION_CLIPBOARD);
3843         gtk_clipboard_set_text (clipboard, text, -1);
3844         g_free (text);
3845 }
3846
3847 static void
3848 ev_view_primary_get_cb (GtkClipboard     *clipboard,
3849                         GtkSelectionData *selection_data,
3850                         guint             info,
3851                         gpointer          data)
3852 {
3853         EvView *ev_view = EV_VIEW (data);
3854         char *text;
3855
3856         if (!ev_document_can_get_text (ev_view->document)) {
3857                 return;
3858         }
3859
3860         text = get_selected_text (ev_view);
3861         gtk_selection_data_set_text (selection_data, text, -1);
3862         g_free (text);
3863 }
3864
3865 static void
3866 ev_view_primary_clear_cb (GtkClipboard *clipboard,
3867                           gpointer      data)
3868 {
3869         EvView *view = EV_VIEW (data);
3870
3871         clear_selection (view);
3872 }
3873
3874 static void
3875 ev_view_update_primary_selection (EvView *ev_view)
3876 {
3877         GtkClipboard *clipboard;
3878
3879         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3880                                               GDK_SELECTION_PRIMARY);
3881
3882         if (ev_view->selection_info.selections) {
3883                 if (!gtk_clipboard_set_with_owner (clipboard,
3884                                                    targets,
3885                                                    G_N_ELEMENTS (targets),
3886                                                    ev_view_primary_get_cb,
3887                                                    ev_view_primary_clear_cb,
3888                                                    G_OBJECT (ev_view)))
3889                         ev_view_primary_clear_cb (clipboard, ev_view);
3890         } else {
3891                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
3892                         gtk_clipboard_clear (clipboard);
3893         }
3894 }
3895
3896 /*** Cursor operations ***/
3897
3898 static GdkCursor *
3899 ev_view_create_invisible_cursor(void)
3900 {
3901        GdkBitmap *empty;
3902        GdkColor black = { 0, 0, 0, 0 };
3903        static char bits[] = { 0x00 };
3904
3905        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
3906
3907        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
3908 }
3909
3910 static void
3911 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
3912 {
3913         GdkCursor *cursor = NULL;
3914         GdkDisplay *display;
3915         GtkWidget *widget;
3916
3917         if (view->cursor == new_cursor) {
3918                 return;
3919         }
3920
3921         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
3922         display = gtk_widget_get_display (widget);
3923         view->cursor = new_cursor;
3924
3925         switch (new_cursor) {
3926                 case EV_VIEW_CURSOR_NORMAL:
3927                         gdk_window_set_cursor (widget->window, NULL);
3928                         break;
3929                 case EV_VIEW_CURSOR_IBEAM:
3930                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
3931                         break;
3932                 case EV_VIEW_CURSOR_LINK:
3933                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
3934                         break;
3935                 case EV_VIEW_CURSOR_WAIT:
3936                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
3937                         break;
3938                 case EV_VIEW_CURSOR_HIDDEN:
3939                         cursor = ev_view_create_invisible_cursor ();
3940                         break;
3941                 case EV_VIEW_CURSOR_DRAG:
3942                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
3943                         break;
3944         }
3945
3946         if (cursor) {
3947                 gdk_window_set_cursor (widget->window, cursor);
3948                 gdk_cursor_unref (cursor);
3949                 gdk_flush();
3950         }
3951 }
3952
3953 void
3954 ev_view_hide_cursor (EvView *view)
3955 {
3956        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
3957 }
3958
3959 void
3960 ev_view_show_cursor (EvView *view)
3961 {
3962        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3963 }
3964
3965 gboolean
3966 ev_view_next_page (EvView *view)
3967 {
3968         int page;
3969
3970         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3971
3972         page = ev_page_cache_get_current_page (view->page_cache);
3973         page = ev_view_get_dual_page (view) ? page + 2 : page + 1;
3974
3975         if (page < ev_page_cache_get_n_pages (view->page_cache)) {
3976                 ev_page_cache_set_current_page (view->page_cache, page);
3977                 return TRUE;
3978         } else if (ev_view_get_dual_page (view) && page == ev_page_cache_get_n_pages (view->page_cache)) {
3979                 ev_page_cache_set_current_page (view->page_cache, page - 1);
3980                 return TRUE;
3981         } else {
3982                 return FALSE;
3983         }
3984 }
3985
3986 gboolean
3987 ev_view_previous_page (EvView *view)
3988 {
3989         int page;
3990
3991         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3992
3993         page = ev_page_cache_get_current_page (view->page_cache);
3994         page = ev_view_get_dual_page (view) ? page - 2 : page - 1;
3995
3996         if (page >= 0) {
3997                 ev_page_cache_set_current_page (view->page_cache, page);
3998                 return TRUE;
3999         } else if (ev_view_get_dual_page (view) && page == -1) {
4000                 ev_page_cache_set_current_page (view->page_cache, 0);
4001                 return TRUE;
4002         } else {
4003                 return FALSE;
4004         }
4005 }
4006
4007 /*** Enum description for usage in signal ***/
4008
4009 GType
4010 ev_sizing_mode_get_type (void)
4011 {
4012   static GType etype = 0;
4013   if (etype == 0) {
4014     static const GEnumValue values[] = {
4015       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
4016       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
4017       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
4018       { 0, NULL, NULL }
4019     };
4020     etype = g_enum_register_static ("EvSizingMode", values);
4021   }
4022   return etype;
4023 }