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