shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <math.h>
  22 #include <string.h>
  23 #include <gtk/gtkalignment.h>
  24 #include <glib/gi18n.h>
  25 #include <gtk/gtkbindings.h>
  26 #include <gtk/gtkselection.h>
  27 #include <gtk/gtkclipboard.h>
  28 #include <gdk/gdkkeysyms.h>
  29 #include <libgnomevfs/gnome-vfs-utils.h>
  30
  31 #include "ev-marshal.h"
  32 #include "ev-view.h"
  33 #include "ev-view-private.h"
  34 #include "ev-utils.h"
  35 #include "ev-selection.h"
  36 #include "ev-document-find.h"
  37 #include "ev-document-misc.h"
  38 #include "ev-debug.h"
  39 #include "ev-job-queue.h"
  40 #include "ev-page-cache.h"
  41 #include "ev-pixbuf-cache.h"
  42 #include "ev-tooltip.h"
  43
  44 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  45 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  46 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  47
  48
  49 enum {
  50         PROP_0,
  51         PROP_STATUS,
  52         PROP_FIND_STATUS,
  53         PROP_CONTINUOUS,
  54         PROP_DUAL_PAGE,
  55         PROP_FULLSCREEN,
  56         PROP_PRESENTATION,
  57         PROP_SIZING_MODE,
  58         PROP_ZOOM,
  59         PROP_ROTATION,
  60         PROP_HAS_SELECTION,
  61 };
  62
  63 enum {
  64         SIGNAL_BINDING_ACTIVATED,
  65         SIGNAL_ZOOM_INVALID,
  66         SIGNAL_EXTERNAL_LINK,
  67         SIGNAL_POPUP_MENU,
  68         N_SIGNALS,
  69 };
  70
  71 enum {
  72         TARGET_STRING,
  73         TARGET_TEXT,
  74         TARGET_COMPOUND_TEXT,
  75         TARGET_UTF8_STRING,
  76         TARGET_TEXT_BUFFER_CONTENTS
  77 };
  78
  79 static const GtkTargetEntry targets[] = {
  80         { "STRING", 0, TARGET_STRING },
  81         { "TEXT",   0, TARGET_TEXT },
  82         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  83         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  84 };
  85
  86 static guint signals[N_SIGNALS];
  87
  88 typedef enum {
  89         EV_VIEW_FIND_NEXT,
  90         EV_VIEW_FIND_PREV
  91 } EvViewFindDirection;
  92
  93 #define ZOOM_IN_FACTOR  1.2
  94 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  95
  96 #define MIN_SCALE 0.05409
  97 #define MAX_SCALE 4.0
  98
  99 #define SCROLL_TIME 150
 100
 101 /*** Scrolling ***/
 102 static void       scroll_to_current_page                     (EvView *view,
 103                                                               GtkOrientation orientation);
 104 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 105                                                               GtkAdjustment      *hadjustment,
 106                                                               GtkAdjustment      *vadjustment);
 107 static void       view_update_range_and_current_page         (EvView             *view);
 108 static void       set_scroll_adjustment                      (EvView             *view,
 109                                                               GtkOrientation      orientation,
 110                                                               GtkAdjustment      *adjustment);
 111 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 112                                                               GtkAdjustment      *hadjustment,
 113                                                               GtkAdjustment      *vadjustment);
 114 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 115                                                               guint               keyval,
 116                                                               GtkScrollType       scroll,
 117                                                               gboolean            horizontal);
 118 static void       ev_view_binding_activated                  (EvView             *view,
 119                                                               GtkScrollType       scroll,
 120                                                               gboolean            horizontal);
 121 static void       ensure_rectangle_is_visible                (EvView             *view,
 122                                                               GdkRectangle       *rect);
 123
 124 /*** Geometry computations ***/
 125 static void       compute_border                             (EvView             *view,
 126                                                               int                 width,
 127                                                               int                 height,
 128                                                               GtkBorder          *border);
 129 static void       get_page_y_offset                          (EvView *view,
 130                                                               int page,
 131                                                               double zoom,
 132                                                               int *y_offset);
 133 static gboolean   get_page_extents                           (EvView             *view,
 134                                                               gint                page,
 135                                                               GdkRectangle       *page_area,
 136                                                               GtkBorder          *border);
 137 static void       view_rect_to_doc_rect                      (EvView             *view,
 138                                                               GdkRectangle       *view_rect,
 139                                                               GdkRectangle       *page_area,
 140                                                               EvRectangle        *doc_rect);
 141 static void       doc_rect_to_view_rect                      (EvView             *view,
 142                                                               int                 page,
 143                                                               EvRectangle        *doc_rect,
 144                                                               GdkRectangle       *view_rect);
 145 static void       find_page_at_location                      (EvView             *view,
 146                                                               gdouble             x,
 147                                                               gdouble             y,
 148                                                               gint               *page,
 149                                                               gint               *x_offset,
 150                                                               gint               *y_offset);
 151 static gboolean  doc_point_to_view_point                     (EvView       *view,
 152                                                               int           page,
 153                                                               EvPoint      *doc_point,
 154                                                               GdkPoint     *view_point);
 155 /*** Hyperrefs ***/
 156 static EvLink *   ev_view_get_link_at_location               (EvView  *view,
 157                                                               gdouble  x,
 158                                                               gdouble  y);
 159 static char*      tip_from_link                              (EvView             *view,
 160                                                               EvLink             *link);
 161 static void       handle_link_over_xy                        (EvView *view,
 162                                                               gint x,
 163                                                               gint y);
 164 /*** GtkWidget implementation ***/
 165 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 166                                                               GtkRequisition     *requisition);
 167 static void       ev_view_size_request_continuous            (EvView             *view,
 168                                                               GtkRequisition     *requisition);
 169 static void       ev_view_size_request_dual_page             (EvView             *view,
 170                                                               GtkRequisition     *requisition);
 171 static void       ev_view_size_request_single_page           (EvView             *view,
 172                                                               GtkRequisition     *requisition);
 173 static void       ev_view_size_request                       (GtkWidget          *widget,
 174                                                               GtkRequisition     *requisition);
 175 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 176                                                               GtkAllocation      *allocation);
 177 static void       ev_view_realize                            (GtkWidget          *widget);
 178 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 179                                                               GdkEventScroll     *event);
 180 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 181                                                               GdkEventExpose     *event);
 182 static gboolean   ev_view_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
 211 /*** Callbacks ***/
 212 static void       find_changed_cb                            (EvDocument         *document,
 213                                                               int                 page,
 214                                                               EvView             *view);
 215 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 216                                                               EvView             *view);
 217 static void       page_changed_cb                            (EvPageCache        *page_cache,
 218                                                               int                 new_page,
 219                                                               EvView             *view);
 220 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 221                                                               EvView             *view);
 222
 223 /*** GObject ***/
 224 static void       ev_view_finalize                           (GObject            *object);
 225 static void       ev_view_destroy                            (GtkObject          *object);
 226 static void       ev_view_set_property                       (GObject            *object,
 227                                                               guint               prop_id,
 228                                                               const GValue       *value,
 229                                                               GParamSpec         *pspec);
 230 static void       ev_view_get_property                       (GObject            *object,
 231                                                               guint               prop_id,
 232                                                               GValue             *value,
 233                                                               GParamSpec         *pspec);
 234 static void       ev_view_class_init                         (EvViewClass        *class);
 235 static void       ev_view_init                               (EvView             *view);
 236
 237 /*** Zoom and sizing ***/
 238 static double   zoom_for_size_fit_width                      (int doc_width,
 239                                                               int doc_height,
 240                                                               int target_width,
 241                                                               int target_height,
 242                                                               int vsb_width);
 243 static double   zoom_for_size_fit_height                     (int doc_width,
 244                                                               int doc_height,
 245                                                               int target_width,
 246                                                               int target_height,
 247                                                               int vsb_height);
 248 static double   zoom_for_size_best_fit                       (int doc_width,
 249                                                               int doc_height,
 250                                                               int target_width,
 251                                                               int target_height,
 252                                                               int vsb_width,
 253                                                               int hsb_width);
 254 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 255                                                               int     width,
 256                                                               int     height);
 257 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 258                                                                 int     width,
 259                                                                 int     height,
 260                                                                 int     vsb_width,
 261                                                                 int     hsb_height);
 262 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 263                                                                 int     width,
 264                                                                 int     height,
 265                                                                 int     vsb_width,
 266                                                                 int     hsb_height);
 267 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 268                                                                 int     width,
 269                                                                 int     height,
 270                                                                 int     vsb_width,
 271                                                                 int     hsb_height);
 272 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 273                                                                 int     width,
 274                                                                 int     height,
 275                                                                 int     vsb_width,
 276                                                                 int     hsb_height);
 277 /*** Cursors ***/
 278 static GdkCursor* ev_view_create_invisible_cursor            (void);
 279 static void       ev_view_set_cursor                         (EvView             *view,
 280                                                               EvViewCursor        new_cursor);
 281
 282 /*** Status messages ***/
 283 static void       ev_view_set_status                         (EvView             *view,
 284                                                               const char         *message);
 285 static void       update_find_status_message                 (EvView             *view);
 286 static void       ev_view_set_find_status                    (EvView             *view,
 287                                                               const char         *message);
 288 /*** Find ***/
 289 static void       jump_to_find_result                        (EvView             *view);
 290 static void       jump_to_find_page                          (EvView             *view,
 291                                                               EvViewFindDirection direction);
 292
 293 /*** Selection ***/
 294 static void       compute_selections                         (EvView             *view,
 295                                                               GdkPoint           *start,
 296                                                               GdkPoint           *stop);
 297 static void       clear_selection                            (EvView             *view);
 298 static void       selection_free                             (EvViewSelection    *selection);
 299 static char*      get_selected_text                          (EvView             *ev_view);
 300 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 301                                                               GtkSelectionData   *selection_data,
 302                                                               guint               info,
 303                                                               gpointer            data);
 304 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 305                                                               gpointer            data);
 306 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 307
 308
 309 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 310
 311 static void
 312 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 313 {
 314         GdkPoint view_point;
 315
 316         if (view->document == NULL) {
 317                 return;
 318         }
 319
 320         doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point);
 321
 322         if (orientation == GTK_ORIENTATION_VERTICAL) {
 323                 view->pending_point.y = 0;
 324         } else {
 325                 view->pending_point.x = 0;
 326         }
 327
 328         if (orientation == GTK_ORIENTATION_VERTICAL) {
 329                 if (view->continuous) {
 330                         gtk_adjustment_clamp_page (view->vadjustment,
 331                                                    view_point.y - view->spacing,
 332                                                    view_point.y + view->vadjustment->page_size);
 333                 } else {
 334                         gtk_adjustment_set_value (view->vadjustment,
 335                                                   view_point.y);
 336                 }
 337         } else {
 338                 if (view->dual_page) {
 339                         gtk_adjustment_clamp_page (view->hadjustment,
 340                                                    view_point.x,
 341                                                    view_point.x + view->hadjustment->page_size);
 342                 } else {
 343                         gtk_adjustment_set_value (view->hadjustment,
 344                                                   CLAMP (view_point.x,
 345                                                   view->hadjustment->lower,
 346                                                   view->hadjustment->upper -
 347                                                   view->hadjustment->page_size));
 348                 }
 349         }
 350 }
 351
 352 static void
 353 view_set_adjustment_values (EvView         *view,
 354                             GtkOrientation  orientation)
 355 {
 356         GtkWidget *widget = GTK_WIDGET (view);
 357         GtkAdjustment *adjustment;
 358         int requisition;
 359         int allocation;
 360
 361         double factor;
 362         gint new_value;
 363
 364         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 365                 requisition = widget->requisition.width;
 366                 allocation = widget->allocation.width;
 367                 adjustment = view->hadjustment;
 368         } else {
 369                 requisition = widget->requisition.height;
 370                 allocation = widget->allocation.height;
 371                 adjustment = view->vadjustment;
 372         }
 373
 374         if (!adjustment)
 375                 return;
 376
 377         factor = 1.0;
 378         switch (view->pending_scroll) {
 379                 case SCROLL_TO_KEEP_POSITION:
 380                         factor = (adjustment->value) / adjustment->upper;
 381                         break;
 382                 case SCROLL_TO_PAGE_POSITION:
 383                         break;
 384                 case SCROLL_TO_CENTER:
 385                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 386                         break;
 387         }
 388
 389         adjustment->page_size = allocation;
 390         adjustment->step_increment = allocation * 0.1;
 391         adjustment->page_increment = allocation * 0.9;
 392         adjustment->lower = 0;
 393         adjustment->upper = MAX (allocation, requisition);
 394
 395         /*
 396          * We add 0.5 to the values before to average out our rounding errors.
 397          */
 398         switch (view->pending_scroll) {
 399                 case SCROLL_TO_KEEP_POSITION:
 400                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 401                         gtk_adjustment_set_value (adjustment, (int)new_value);
 402                         break;
 403                 case SCROLL_TO_PAGE_POSITION:
 404                         scroll_to_current_page (view, orientation);
 405                         break;
 406                 case SCROLL_TO_CENTER:
 407                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 408                                            0, adjustment->upper - adjustment->page_size);
 409                         gtk_adjustment_set_value (adjustment, (int)new_value);
 410                         break;
 411         }
 412
 413         gtk_adjustment_changed (adjustment);
 414 }
 415
 416 static void
 417 view_update_range_and_current_page (EvView *view)
 418 {
 419         if (view->pending_scroll != SCROLL_TO_KEEP_POSITION)
 420                 return;
 421
 422         /* Presentation trumps all other modes */
 423         if (view->presentation) {
 424                 view->start_page = view->current_page;
 425                 view->end_page = view->current_page;
 426         } else if (view->continuous) {
 427                 GdkRectangle current_area, unused, page_area;
 428                 GtkBorder border;
 429                 gint current_page;
 430                 gboolean found = FALSE;
 431                 int i;
 432
 433                 if (!(view->vadjustment && view->hadjustment))
 434                         return;
 435
 436                 current_area.x = view->hadjustment->value;
 437                 current_area.width = view->hadjustment->upper;
 438                 current_area.y = view->vadjustment->value;
 439                 current_area.height = view->vadjustment->page_size;
 440
 441                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 442
 443                         get_page_extents (view, i, &page_area, &border);
 444
 445                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 446                                 if (! found) {
 447                                         view->start_page = i;
 448                                         found = TRUE;
 449
 450                                 }
 451                                 view->end_page = i;
 452                         } else if (found) {
 453                                 break;
 454                         }
 455                 }
 456
 457                 current_page = ev_page_cache_get_current_page (view->page_cache);
 458
 459                 if (current_page < view->start_page || current_page > view->end_page) {
 460                         view->current_page = view->start_page;
 461                         ev_page_cache_set_current_page (view->page_cache, view->start_page);
 462                 }
 463         } else {
 464                 if (view->dual_page) {
 465                         if (view->current_page % 2 == 0) {
 466                                 view->start_page = view->current_page;
 467                                 if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 468                                         view->end_page = view->start_page + 1;
 469                                 else
 470                                         view->end_page = view->start_page;
 471                         } else {
 472                                 view->start_page = view->current_page - 1;
 473                                 view->end_page = view->current_page;
 474                         }
 475                 } else {
 476                         view->start_page = view->current_page;
 477                         view->end_page = view->current_page;
 478                 }
 479         }
 480
 481         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 482                                         view->start_page,
 483                                         view->end_page,
 484                                         view->rotation,
 485                                         view->scale,
 486                                         view->selection_info.selections);
 487 }
 488
 489 static void
 490 set_scroll_adjustment (EvView *view,
 491                        GtkOrientation  orientation,
 492                        GtkAdjustment  *adjustment)
 493 {
 494         GtkAdjustment **to_set;
 495
 496         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 497                 to_set = &view->hadjustment;
 498         else
 499                 to_set = &view->vadjustment;
 500
 501         if (*to_set != adjustment) {
 502                 if (*to_set) {
 503                         g_signal_handlers_disconnect_by_func (*to_set,
 504                                                               (gpointer) on_adjustment_value_changed,
 505                                                               view);
 506                         g_object_unref (*to_set);
 507                 }
 508
 509                 *to_set = adjustment;
 510                 view_set_adjustment_values (view, orientation);
 511
 512                 if (*to_set) {
 513                         g_object_ref (*to_set);
 514                         g_signal_connect (*to_set, "value_changed",
 515                                           G_CALLBACK (on_adjustment_value_changed), view);
 516                 }
 517         }
 518 }
 519
 520 static void
 521 ev_view_set_scroll_adjustments (EvView *view,
 522                                 GtkAdjustment  *hadjustment,
 523                                 GtkAdjustment  *vadjustment)
 524 {
 525         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 526         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 527
 528         on_adjustment_value_changed (NULL, view);
 529 }
 530
 531 static void
 532 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 533                            guint           keyval,
 534                            GtkScrollType   scroll,
 535                            gboolean        horizontal)
 536 {
 537   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 538
 539   gtk_binding_entry_add_signal (binding_set, keyval, 0,
 540                                 "binding_activated", 2,
 541                                 GTK_TYPE_SCROLL_TYPE, scroll,
 542                                 G_TYPE_BOOLEAN, horizontal);
 543   gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
 544                                 "binding_activated", 2,
 545                                 GTK_TYPE_SCROLL_TYPE, scroll,
 546                                 G_TYPE_BOOLEAN, horizontal);
 547 }
 548
 549 void
 550 ev_view_scroll (EvView        *view,
 551                 EvScrollType   scroll)
 552 {
 553         GtkAdjustment *adjustment;
 554         double value, increment;
 555         gboolean first_page = FALSE;
 556         gboolean last_page = FALSE;
 557
 558         /* Assign values for increment and vertical adjustment */
 559         adjustment = view->vadjustment;
 560         increment = adjustment->page_size * 0.75;
 561         value = adjustment->value;
 562
 563         /* Assign boolean for first and last page */
 564         if (view->current_page == 0)
 565                 first_page = TRUE;
 566         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 567                 last_page = TRUE;
 568
 569         switch (scroll) {
 570                 case EV_SCROLL_PAGE_BACKWARD:
 571                         /* Do not jump backwards if at the first page */
 572                         if (value == (adjustment->lower) && first_page) {
 573                                 /* Do nothing */
 574                                 /* At the top of a page, assign the upper bound limit of previous page */
 575                         } else if (value == (adjustment->lower)) {
 576                                 value = adjustment->upper - adjustment->page_size;
 577                                 ev_page_cache_set_current_page (view->page_cache, view->current_page - 1);
 578                                 /* Jump to the top */
 579                         } else {
 580                                 value = MAX (value - increment, adjustment->lower);
 581                         }
 582                         break;
 583                 case EV_SCROLL_PAGE_FORWARD:
 584                         /* Do not jump forward if at the last page */
 585                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 586                                 /* Do nothing */
 587                         /* At the bottom of a page, assign the lower bound limit of next page */
 588                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 589                                 value = 0;
 590                                 ev_page_cache_set_current_page (view->page_cache, view->current_page + 1);
 591                         /* Jump to the bottom */
 592                         } else {
 593                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 594                         }
 595                         break;
 596                 default:
 597                         break;
 598         }
 599
 600         gtk_adjustment_set_value (adjustment, value);
 601 }
 602
 603 static void
 604 ev_view_binding_activated (EvView *view,
 605                            GtkScrollType scroll,
 606                            gboolean horizontal)
 607 {
 608         GtkAdjustment *adjustment;
 609         double value;
 610
 611         if (view->presentation) {
 612                 switch (scroll) {
 613                         case GTK_SCROLL_STEP_BACKWARD:
 614                                 ev_view_previous_page (view);
 615                                 break;
 616                         case GTK_SCROLL_STEP_FORWARD:
 617                                 ev_view_next_page (view);
 618                                 break;
 619                         default:
 620                                 break;
 621                 }
 622                 return;
 623         }
 624
 625         if (horizontal) {
 626                 adjustment = view->hadjustment;
 627         } else {
 628                 adjustment = view->vadjustment;
 629         }
 630
 631         value = adjustment->value;
 632
 633         switch (scroll) {
 634                 case GTK_SCROLL_STEP_BACKWARD:
 635                         value -= adjustment->step_increment;
 636                         break;
 637                 case GTK_SCROLL_STEP_FORWARD:
 638                         value += adjustment->step_increment;
 639                         break;
 640                 default:
 641                         break;
 642         }
 643
 644         value = CLAMP (value, adjustment->lower,
 645                        adjustment->upper - adjustment->page_size);
 646
 647         gtk_adjustment_set_value (adjustment, value);
 648 }
 649
 650 #define MARGIN 5
 651
 652 static void
 653 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 654 {
 655         GtkWidget *widget = GTK_WIDGET (view);
 656         GtkAdjustment *adjustment;
 657         int value;
 658
 659         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
 660
 661         adjustment = view->vadjustment;
 662
 663         if (rect->y < adjustment->value) {
 664                 value = MAX (adjustment->lower, rect->y - MARGIN);
 665                 gtk_adjustment_set_value (view->vadjustment, value);
 666         } else if (rect->y + rect->height >
 667                    adjustment->value + widget->allocation.height) {
 668                 value = MIN (adjustment->upper, rect->y + rect->height -
 669                              widget->allocation.height + MARGIN);
 670                 gtk_adjustment_set_value (view->vadjustment, value);
 671         }
 672
 673         adjustment = view->hadjustment;
 674
 675         if (rect->x < adjustment->value) {
 676                 value = MAX (adjustment->lower, rect->x - MARGIN);
 677                 gtk_adjustment_set_value (view->hadjustment, value);
 678         } else if (rect->x + rect->height >
 679                    adjustment->value + widget->allocation.width) {
 680                 value = MIN (adjustment->upper, rect->x + rect->width -
 681                              widget->allocation.width + MARGIN);
 682                 gtk_adjustment_set_value (view->hadjustment, value);
 683         }
 684 }
 685
 686 /*** Geometry computations ***/
 687
 688 static void
 689 compute_border (EvView *view, int width, int height, GtkBorder *border)
 690 {
 691         if (view->presentation) {
 692                 border->left = 0;
 693                 border->right = 0;
 694                 border->top = 0;
 695                 border->bottom = 0;
 696         } else {
 697                 ev_document_misc_get_page_border_size (width, height, border);
 698         }
 699 }
 700
 701 static void
 702 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 703 {
 704         int max_width, offset;
 705         GtkBorder border;
 706
 707         g_return_if_fail (y_offset != NULL);
 708
 709         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 710
 711         compute_border (view, max_width, max_width, &border);
 712
 713         if (view->dual_page) {
 714                 ev_page_cache_get_height_to_page (view->page_cache, page,
 715                                                   view->rotation, zoom, NULL, &offset);
 716                 offset += (page / 2 + 1) * view->spacing + (page / 2) * (border.top + border.bottom);
 717         } else {
 718                 ev_page_cache_get_height_to_page (view->page_cache, page,
 719                                                   view->rotation, zoom, &offset, NULL);
 720                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 721         }
 722
 723         *y_offset = offset;
 724         return;
 725 }
 726
 727 static gboolean
 728 get_page_extents (EvView       *view,
 729                   gint          page,
 730                   GdkRectangle *page_area,
 731                   GtkBorder    *border)
 732 {
 733         GtkWidget *widget;
 734         int width, height;
 735
 736         widget = GTK_WIDGET (view);
 737
 738         /* Get the size of the page */
 739         ev_page_cache_get_size (view->page_cache, page,
 740                                 view->rotation,
 741                                 view->scale,
 742                                 &width, &height);
 743         compute_border (view, width, height, border);
 744         page_area->width = width + border->left + border->right;
 745         page_area->height = height + border->top + border->bottom;
 746
 747         if (view->presentation) {
 748                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 749                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 750         } else if (view->continuous) {
 751                 gint max_width;
 752                 gint x, y;
 753
 754                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 755                                              view->scale, &max_width);
 756                 max_width = max_width + border->left + border->right;
 757                 /* Get the location of the bounding box */
 758                 if (view->dual_page) {
 759                         x = view->spacing + (page % 2) * (max_width + view->spacing);
 760                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 761                         if (page % 2 == 0)
 762                                 x = x + (max_width - width - border->left - border->right);
 763                 } else {
 764                         x = view->spacing;
 765                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 766                 }
 767
 768                 get_page_y_offset (view, page, view->scale, &y);
 769
 770                 page_area->x = x;
 771                 page_area->y = y;
 772         } else {
 773                 gint x, y;
 774                 if (view->dual_page) {
 775                         gint width_2, height_2;
 776                         gint max_width = width;
 777                         gint max_height = height;
 778                         GtkBorder overall_border;
 779                         gint other_page;
 780
 781                         other_page = page ^ 1;
 782
 783                         /* First, we get the bounding box of the two pages */
 784                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
 785                                 ev_page_cache_get_size (view->page_cache,
 786                                                         other_page,
 787                                                         view->rotation,
 788                                                         view->scale,
 789                                                         &width_2, &height_2);
 790                                 if (width_2 > width)
 791                                         max_width = width_2;
 792                                 if (height_2 > height)
 793                                         max_height = height_2;
 794                         }
 795                         compute_border (view, max_width, max_height, &overall_border);
 796
 797                         /* Find the offsets */
 798                         x = view->spacing;
 799                         y = view->spacing;
 800
 801                         /* Adjust for being the left or right page */
 802                         if (page % 2 == 0)
 803                                 x = x + max_width - width;
 804                         else
 805                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 806
 807                         y = y + (max_height - height)/2;
 808
 809                         /* Adjust for extra allocation */
 810                         x = x + MAX (0, widget->allocation.width -
 811                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 812                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 813                 } else {
 814                         x = view->spacing;
 815                         y = view->spacing;
 816
 817                         /* Adjust for extra allocation */
 818                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 819                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 820                 }
 821
 822                 page_area->x = x;
 823                 page_area->y = y;
 824         }
 825
 826         return TRUE;
 827 }
 828
 829 static void
 830 view_point_to_doc_point (EvView *view,
 831                          GdkPoint *view_point,
 832                          GdkRectangle *page_area,
 833                          double  *doc_point_x,
 834                          double  *doc_point_y)
 835 {
 836         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 837         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 838 }
 839
 840 static void
 841 view_rect_to_doc_rect (EvView *view,
 842                        GdkRectangle *view_rect,
 843                        GdkRectangle *page_area,
 844                        EvRectangle  *doc_rect)
 845 {
 846         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 847         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 848         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 849         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 850 }
 851
 852 static gboolean
 853 doc_point_to_view_point (EvView       *view,
 854                          int           page,
 855                          EvPoint      *doc_point,
 856                          GdkPoint     *view_point)
 857 {
 858         GdkRectangle page_area;
 859         GtkBorder border;
 860         double x, y, view_x, view_y;
 861         int width, height;
 862
 863         ev_page_cache_get_size (view->page_cache, page,
 864                                 view->rotation,
 865                                 1.0,
 866                                 &width, &height);
 867
 868         if (view->rotation == 0) {
 869                 x = doc_point->x;
 870                 y = doc_point->y;
 871         } else if (view->rotation == 90) {
 872                 x = width - doc_point->y;
 873                 y = doc_point->x;
 874         } else if (view->rotation == 180) {
 875                 x = width - doc_point->x;
 876                 y = height - doc_point->y;
 877         } else if (view->rotation == 270) {
 878                 x = doc_point->y;
 879                 y = height - doc_point->x;
 880         } else {
 881                 g_assert_not_reached ();
 882         }
 883
 884         get_page_extents (view, page, &page_area, &border);
 885
 886         view_x = x * view->scale;
 887         view_y = y * view->scale;
 888         view_point->x = view_x + page_area.x;
 889         view_point->y = view_y + page_area.y;
 890
 891         return (view_x > 0 && view_x <= page_area.width &&
 892                 view_y > 0 && view_y <= page_area.height);
 893 }
 894
 895 static void
 896 doc_rect_to_view_rect (EvView       *view,
 897                        int           page,
 898                        EvRectangle  *doc_rect,
 899                        GdkRectangle *view_rect)
 900 {
 901         GdkRectangle page_area;
 902         GtkBorder border;
 903         double x, y, w, h;
 904         int width, height;
 905
 906         ev_page_cache_get_size (view->page_cache, page,
 907                                 view->rotation,
 908                                 1.0,
 909                                 &width, &height);
 910
 911         if (view->rotation == 0) {
 912                 x = doc_rect->x1;
 913                 y = doc_rect->y1;
 914                 w = doc_rect->x2 - doc_rect->x1;
 915                 h = doc_rect->y2 - doc_rect->y1;
 916         } else if (view->rotation == 90) {
 917                 x = width - doc_rect->y2;
 918                 y = doc_rect->x1;
 919                 w = doc_rect->y2 - doc_rect->y1;
 920                 h = doc_rect->x2 - doc_rect->x1;
 921         } else if (view->rotation == 180) {
 922                 x = width - doc_rect->x2;
 923                 y = height - doc_rect->y2;
 924                 w = doc_rect->x2 - doc_rect->x1;
 925                 h = doc_rect->y2 - doc_rect->y1;
 926         } else if (view->rotation == 270) {
 927                 x = doc_rect->y1;
 928                 y = height - doc_rect->x2;
 929                 w = doc_rect->y2 - doc_rect->y1;
 930                 h = doc_rect->x2 - doc_rect->x1;
 931         } else {
 932                 g_assert_not_reached ();
 933         }
 934
 935         get_page_extents (view, page, &page_area, &border);
 936
 937         view_rect->x = x * view->scale + page_area.x;
 938         view_rect->y = y * view->scale + page_area.y;
 939         view_rect->width = w * view->scale;
 940         view_rect->height = h * view->scale;
 941 }
 942
 943 static void
 944 find_page_at_location (EvView  *view,
 945                        gdouble  x,
 946                        gdouble  y,
 947                        gint    *page,
 948                        gint    *x_offset,
 949                        gint    *y_offset)
 950 {
 951         int i;
 952
 953         if (view->document == NULL)
 954                 return;
 955
 956         g_assert (page);
 957         g_assert (x_offset);
 958         g_assert (y_offset);
 959
 960         for (i = view->start_page; i <= view->end_page; i++) {
 961                 GdkRectangle page_area;
 962                 GtkBorder border;
 963
 964                 if (! get_page_extents (view, i, &page_area, &border))
 965                         continue;
 966
 967                 if ((x >= page_area.x + border.left) &&
 968                     (x < page_area.x + page_area.width - border.right) &&
 969                     (y >= page_area.y + border.top) &&
 970                     (y < page_area.y + page_area.height - border.bottom)) {
 971                         *page = i;
 972                         *x_offset = x - (page_area.x + border.left);
 973                         *y_offset = y - (page_area.y + border.top);
 974                         return;
 975                 }
 976         }
 977
 978         *page = -1;
 979 }
 980
 981 static gboolean
 982 location_in_text (EvView  *view,
 983                   gdouble  x,
 984                   gdouble  y)
 985 {
 986         GdkRegion *region;
 987         gint page = -1;
 988         gint x_offset = 0, y_offset = 0;
 989
 990         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
 991
 992         if (page == -1)
 993                 return FALSE;
 994
 995         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
 996
 997         if (region)
 998                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
 999         else
1000                 return FALSE;
1001 }
1002
1003 static int
1004 ev_view_get_width (EvView *view)
1005 {
1006         return GTK_WIDGET (view)->allocation.width;
1007 }
1008
1009 static int
1010 ev_view_get_height (EvView *view)
1011 {
1012         return GTK_WIDGET (view)->allocation.height;
1013 }
1014
1015 static gboolean
1016 location_in_selected_text (EvView  *view,
1017                            gdouble  x,
1018                            gdouble  y)
1019 {
1020         gint page = -1;
1021         gint x_offset = 0, y_offset = 0;
1022         EvViewSelection *selection;
1023         GList *l = NULL;
1024
1025         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1026                 selection = (EvViewSelection *)l->data;
1027
1028                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1029
1030                 if (page != selection->page)
1031                         continue;
1032
1033                 if (selection->covered_region &&
1034                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1035                         return TRUE;
1036         }
1037
1038         return FALSE;
1039 }
1040
1041 /*** Hyperref ***/
1042 static EvLink *
1043 ev_view_get_link_at_location (EvView  *view,
1044                               gdouble  x,
1045                               gdouble  y)
1046 {
1047         gint page = -1;
1048         gint x_offset = 0, y_offset = 0;
1049         GList *link_mapping;
1050
1051         x += view->scroll_x;
1052         y += view->scroll_y;
1053
1054         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1055
1056         if (page == -1)
1057                 return NULL;
1058
1059         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1060
1061         if (link_mapping)
1062                 return ev_link_mapping_find (link_mapping, x_offset / view->scale, y_offset / view->scale);
1063         else
1064                 return NULL;
1065 }
1066
1067 static void
1068 goto_fitr_link (EvView *view, EvLink *link)
1069 {
1070         EvPoint doc_point;
1071         int page;
1072         double zoom;
1073
1074         zoom = zoom_for_size_best_fit (ev_link_get_right (link) - ev_link_get_left (link),
1075                                        ev_link_get_top (link) - ev_link_get_bottom (link),
1076                                        ev_view_get_width (view),
1077                                        ev_view_get_height (view), 0, 0);
1078
1079         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1080         ev_view_set_zoom (view, zoom, FALSE);
1081
1082         page = ev_link_get_page (link);
1083         doc_point.x = ev_link_get_left (link);
1084         doc_point.y = ev_link_get_top (link);
1085
1086         view->current_page = page;
1087         view->pending_point = doc_point;
1088         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1089
1090         gtk_widget_queue_resize (GTK_WIDGET (view));
1091 }
1092
1093 static void
1094 goto_fitv_link (EvView *view, EvLink *link)
1095 {
1096         EvPoint doc_point;
1097         int doc_width, doc_height, page;
1098         double zoom;
1099
1100         page = ev_link_get_page (link);
1101         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1102
1103         doc_point.x = ev_link_get_left (link);
1104         doc_point.y = 0;
1105
1106         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1107                                          ev_view_get_width (view),
1108                                          ev_view_get_height (view), 0);
1109
1110         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1111         ev_view_set_zoom (view, zoom, FALSE);
1112
1113         view->current_page = page;
1114         view->pending_point = doc_point;
1115         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1116
1117         gtk_widget_queue_resize (GTK_WIDGET (view));
1118 }
1119
1120 static void
1121 goto_fith_link (EvView *view, EvLink *link)
1122 {
1123         EvPoint doc_point;
1124         int doc_width, doc_height, page;
1125         double zoom;
1126
1127         page = ev_link_get_page (link);
1128         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1129
1130         doc_point.x = 0;
1131         doc_point.y = doc_height - ev_link_get_top (link);
1132
1133         zoom = zoom_for_size_fit_width (doc_width, ev_link_get_top (link),
1134                                         ev_view_get_width (view),
1135                                         ev_view_get_height (view), 0);
1136
1137         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1138         ev_view_set_zoom (view, zoom, FALSE);
1139
1140         view->current_page = page;
1141         view->pending_point = doc_point;
1142         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1143
1144         gtk_widget_queue_resize (GTK_WIDGET (view));
1145 }
1146
1147 static void
1148 goto_fit_link (EvView *view, EvLink *link)
1149 {
1150         double zoom;
1151         int doc_width, doc_height;
1152         int page;
1153
1154         page = ev_link_get_page (link);
1155         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1156
1157         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1158                                        ev_view_get_height (view), 0, 0);
1159
1160         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1161         ev_view_set_zoom (view, zoom, FALSE);
1162
1163         view->current_page = page;
1164         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1165
1166         gtk_widget_queue_resize (GTK_WIDGET (view));
1167 }
1168
1169 static void
1170 goto_xyz_link (EvView *view, EvLink *link)
1171 {
1172         EvPoint doc_point;
1173         int height, page;
1174         double zoom;
1175
1176         zoom = ev_link_get_zoom (link);
1177         page = ev_link_get_page (link);
1178         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, NULL, &height);
1179
1180         if (zoom != 0) {
1181                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1182                 ev_view_set_zoom (view, zoom, FALSE);
1183         }
1184
1185         doc_point.x = ev_link_get_left (link);
1186         doc_point.y = height - ev_link_get_top (link);
1187
1188         view->current_page = page;
1189         view->pending_point = doc_point;
1190         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
1191
1192         gtk_widget_queue_resize (GTK_WIDGET (view));
1193 }
1194
1195 void
1196 ev_view_goto_link (EvView *view, EvLink *link)
1197 {
1198         EvLinkType type;
1199         int page;
1200
1201         type = ev_link_get_link_type (link);
1202
1203         switch (type) {
1204                 case EV_LINK_TYPE_TITLE:
1205                         break;
1206                 case EV_LINK_TYPE_PAGE:
1207                         page = ev_link_get_page (link);
1208                         ev_page_cache_set_current_page (view->page_cache, page);
1209                         break;
1210                 case EV_LINK_TYPE_PAGE_FIT:
1211                         goto_fit_link (view, link);
1212                         break;
1213                 case EV_LINK_TYPE_PAGE_FITH:
1214                         goto_fith_link (view, link);
1215                         break;
1216                 case EV_LINK_TYPE_PAGE_FITV:
1217                         goto_fitv_link (view, link);
1218                         break;
1219                 case EV_LINK_TYPE_PAGE_FITR:
1220                         goto_fitr_link (view, link);
1221                         break;
1222                 case EV_LINK_TYPE_PAGE_XYZ:
1223                         goto_xyz_link (view, link);
1224                         break;
1225                 case EV_LINK_TYPE_EXTERNAL_URI:
1226                 case EV_LINK_TYPE_LAUNCH:
1227                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, link);
1228                         break;
1229         }
1230 }
1231
1232 static char *
1233 tip_from_link (EvView *view, EvLink *link)
1234 {
1235         EvLinkType type;
1236         char *msg = NULL;
1237         char *page_label;
1238
1239         type = ev_link_get_link_type (link);
1240
1241         switch (type) {
1242                 case EV_LINK_TYPE_TITLE:
1243                         if (ev_link_get_title (link))
1244                                 msg = g_strdup (ev_link_get_title (link));
1245                         break;
1246                 case EV_LINK_TYPE_PAGE:
1247                 case EV_LINK_TYPE_PAGE_XYZ:
1248                         page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link));
1249                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1250                         g_free (page_label);
1251                         break;
1252                 case EV_LINK_TYPE_EXTERNAL_URI:
1253                         msg = g_strdup (ev_link_get_uri (link));
1254                         break;
1255                 default:
1256                         break;
1257         }
1258
1259         return msg;
1260 }
1261
1262 static void
1263 handle_link_over_xy (EvView *view, gint x, gint y)
1264 {
1265         EvLink *link;
1266
1267         link = ev_view_get_link_at_location (view, x, y);
1268
1269         if (view->link_tooltip == NULL) {
1270                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1271         }
1272
1273         if (view->hovered_link != link) {
1274                 view->hovered_link = link;
1275                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1276         }
1277
1278         if (link) {
1279                 char *msg = tip_from_link (view, link);
1280
1281                 if (msg && g_utf8_validate (msg, -1, NULL)) {
1282                         EvTooltip *tooltip = EV_TOOLTIP (view->link_tooltip);
1283
1284                         ev_tooltip_set_position (tooltip, x, y);
1285                         ev_tooltip_set_text (tooltip, msg);
1286                         ev_tooltip_activate (tooltip);
1287                 }
1288                 g_free (msg);
1289
1290                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1291         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1292                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1293         } else {
1294                 ev_view_set_status (view, NULL);
1295                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1296                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1297                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1298         }
1299         return;
1300 }
1301
1302 /*** GtkWidget implementation ***/
1303
1304 static void
1305 ev_view_size_request_continuous_dual_page (EvView         *view,
1306                                            GtkRequisition *requisition)
1307 {
1308         int max_width;
1309         gint n_pages;
1310         GtkBorder border;
1311
1312         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1313                                      view->scale, &max_width);
1314         compute_border (view, max_width, max_width, &border);
1315
1316         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1317
1318         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1319         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1320
1321         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1322                 requisition->width = 1;
1323         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1324                 requisition->width = 1;
1325                 /* FIXME: This could actually be set on one page docs or docs
1326                  * with a strange aspect ratio. */
1327                 /* requisition->height = 1;*/
1328         }
1329 }
1330
1331 static void
1332 ev_view_size_request_continuous (EvView         *view,
1333                                  GtkRequisition *requisition)
1334 {
1335         int max_width;
1336         int n_pages;
1337         GtkBorder border;
1338
1339
1340         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1341                                      view->scale, &max_width);
1342         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1343         compute_border (view, max_width, max_width, &border);
1344
1345         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1346         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1347
1348         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1349                 requisition->width = 1;
1350         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1351                 requisition->width = 1;
1352                 /* FIXME: This could actually be set on one page docs or docs
1353                  * with a strange aspect ratio. */
1354                 /* requisition->height = 1;*/
1355         }
1356 }
1357
1358 static void
1359 ev_view_size_request_dual_page (EvView         *view,
1360                                 GtkRequisition *requisition)
1361 {
1362         GtkBorder border;
1363         gint width, height;
1364
1365         /* Find the largest of the two. */
1366         ev_page_cache_get_size (view->page_cache,
1367                                 view->current_page,
1368                                 view->rotation,
1369                                 view->scale,
1370                                 &width, &height);
1371         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1372                 gint width_2, height_2;
1373                 ev_page_cache_get_size (view->page_cache,
1374                                         view->current_page + 1,
1375                                         view->rotation,
1376                                         view->scale,
1377                                         &width_2, &height_2);
1378                 if (width_2 > width) {
1379                         width = width_2;
1380                         height = height_2;
1381                 }
1382         }
1383         compute_border (view, width, height, &border);
1384
1385         requisition->width = ((width + border.left + border.right) * 2) +
1386                 (view->spacing * 3);
1387         requisition->height = (height + border.top + border.bottom) +
1388                 (view->spacing * 2);
1389
1390         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1391                 requisition->width = 1;
1392         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1393                 requisition->width = 1;
1394                 requisition->height = 1;
1395         }
1396 }
1397
1398 static void
1399 ev_view_size_request_single_page (EvView         *view,
1400                                   GtkRequisition *requisition)
1401 {
1402         GtkBorder border;
1403         gint width, height;
1404
1405         ev_page_cache_get_size (view->page_cache,
1406                                 view->current_page,
1407                                 view->rotation,
1408                                 view->scale,
1409                                 &width, &height);
1410         compute_border (view, width, height, &border);
1411
1412         requisition->width = width + border.left + border.right + (2 * view->spacing);
1413         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1414
1415         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1416                 requisition->width = 1;
1417                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1418         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1419                 requisition->width = 1;
1420                 requisition->height = 1;
1421         }
1422 }
1423
1424 static void
1425 ev_view_size_request (GtkWidget      *widget,
1426                       GtkRequisition *requisition)
1427 {
1428         EvView *view = EV_VIEW (widget);
1429
1430         if (view->document == NULL) {
1431                 requisition->width = 1;
1432                 requisition->height = 1;
1433                 return;
1434         }
1435
1436         if (view->presentation) {
1437                 requisition->width = 1;
1438                 requisition->height = 1;
1439                 return;
1440         }
1441
1442         if (view->continuous && view->dual_page)
1443                 ev_view_size_request_continuous_dual_page (view, requisition);
1444         else if (view->continuous)
1445                 ev_view_size_request_continuous (view, requisition);
1446         else if (view->dual_page)
1447                 ev_view_size_request_dual_page (view, requisition);
1448         else
1449                 ev_view_size_request_single_page (view, requisition);
1450 }
1451
1452 static void
1453 ev_view_size_allocate (GtkWidget      *widget,
1454                        GtkAllocation  *allocation)
1455 {
1456         EvView *view = EV_VIEW (widget);
1457
1458         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1459             view->sizing_mode == EV_SIZING_BEST_FIT) {
1460
1461                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1462
1463                 ev_view_size_request (widget, &widget->requisition);
1464         }
1465
1466         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1467         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1468
1469         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1470         view->pending_resize = FALSE;
1471
1472         if (view->document)
1473                 view_update_range_and_current_page (view);
1474
1475         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1476 }
1477
1478 static void
1479 ev_view_realize (GtkWidget *widget)
1480 {
1481         EvView *view = EV_VIEW (widget);
1482         GdkWindowAttr attributes;
1483
1484         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1485
1486
1487         attributes.window_type = GDK_WINDOW_CHILD;
1488         attributes.wclass = GDK_INPUT_OUTPUT;
1489         attributes.visual = gtk_widget_get_visual (widget);
1490         attributes.colormap = gtk_widget_get_colormap (widget);
1491
1492         attributes.x = widget->allocation.x;
1493         attributes.y = widget->allocation.y;
1494         attributes.width = widget->allocation.width;
1495         attributes.height = widget->allocation.height;
1496         attributes.event_mask = GDK_EXPOSURE_MASK |
1497                                 GDK_BUTTON_PRESS_MASK |
1498                                 GDK_BUTTON_RELEASE_MASK |
1499                                 GDK_SCROLL_MASK |
1500                                 GDK_KEY_PRESS_MASK |
1501                                 GDK_POINTER_MOTION_MASK |
1502                                 GDK_POINTER_MOTION_HINT_MASK |
1503                                 GDK_ENTER_NOTIFY_MASK |
1504                                 GDK_LEAVE_NOTIFY_MASK;
1505
1506         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1507                                          &attributes,
1508                                          GDK_WA_X | GDK_WA_Y |
1509                                          GDK_WA_COLORMAP |
1510                                          GDK_WA_VISUAL);
1511         gdk_window_set_user_data (widget->window, widget);
1512         widget->style = gtk_style_attach (widget->style, widget->window);
1513
1514         if (view->presentation)
1515                 gdk_window_set_background (widget->window, &widget->style->black);
1516         else
1517                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1518 }
1519
1520 static gboolean
1521 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1522 {
1523         EvView *view = EV_VIEW (widget);
1524         guint state;
1525
1526         state = event->state & gtk_accelerator_get_default_mod_mask ();
1527
1528         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1529                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1530
1531                 if (event->direction == GDK_SCROLL_UP ||
1532                     event->direction == GDK_SCROLL_LEFT) {
1533                         if (ev_view_can_zoom_in (view)) {
1534                                 ev_view_zoom_in (view);
1535                         }
1536                 } else {
1537                         if (ev_view_can_zoom_out (view)) {
1538                                 ev_view_zoom_out (view);
1539                         }
1540                 }
1541
1542                 return TRUE;
1543         }
1544
1545         /* Shift+Wheel scrolls the in the perpendicular direction */
1546         if (state & GDK_SHIFT_MASK) {
1547                 if (event->direction == GDK_SCROLL_UP)
1548                         event->direction = GDK_SCROLL_LEFT;
1549                 if (event->direction == GDK_SCROLL_LEFT)
1550                         event->direction = GDK_SCROLL_UP;
1551                 if (event->direction == GDK_SCROLL_DOWN)
1552                         event->direction = GDK_SCROLL_RIGHT;
1553                 if (event->direction == GDK_SCROLL_RIGHT)
1554                         event->direction = GDK_SCROLL_DOWN;
1555
1556                 event->state &= ~GDK_SHIFT_MASK;
1557                 state &= ~GDK_SHIFT_MASK;
1558         }
1559
1560         if (state == 0 && view->presentation) {
1561                 switch (event->direction) {
1562                 case GDK_SCROLL_DOWN:
1563                 case GDK_SCROLL_RIGHT:
1564                         ev_view_next_page (view);
1565                         break;
1566                 case GDK_SCROLL_UP:
1567                 case GDK_SCROLL_LEFT:
1568                         ev_view_previous_page (view);
1569                         break;
1570                 }
1571
1572                 return TRUE;
1573         }
1574
1575         return FALSE;
1576 }
1577
1578 static EvViewSelection *
1579 find_selection_for_page (EvView *view,
1580                          gint    page)
1581 {
1582         GList *list;
1583
1584         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1585                 EvViewSelection *selection;
1586
1587                 selection = (EvViewSelection *) list->data;
1588
1589                 if (selection->page == page)
1590                         return selection;
1591         }
1592
1593         return NULL;
1594 }
1595
1596 static gboolean
1597 ev_view_expose_event (GtkWidget      *widget,
1598                       GdkEventExpose *event)
1599 {
1600         EvView *view = EV_VIEW (widget);
1601         int i;
1602
1603         if (view->document == NULL)
1604                 return FALSE;
1605
1606         for (i = view->start_page; i <= view->end_page; i++) {
1607                 GdkRectangle page_area;
1608                 GtkBorder border;
1609
1610                 if (!get_page_extents (view, i, &page_area, &border))
1611                         continue;
1612
1613                 page_area.x -= view->scroll_x;
1614                 page_area.y -= view->scroll_y;
1615
1616                 draw_one_page (view, i, &page_area, &border, &(event->area));
1617
1618                 if (EV_IS_DOCUMENT_FIND (view->document))
1619                         highlight_find_results (view, i);
1620         }
1621
1622         return FALSE;
1623 }
1624
1625 static gboolean
1626 ev_view_button_press_event (GtkWidget      *widget,
1627                             GdkEventButton *event)
1628 {
1629         EvView *view = EV_VIEW (widget);
1630         EvLink *link;
1631
1632         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1633                 gtk_widget_grab_focus (widget);
1634         }
1635
1636         view->pressed_button = event->button;
1637         view->selection_info.in_drag = FALSE;
1638
1639         switch (event->button) {
1640                 case 1:
1641                         if (view->selection_info.selections) {
1642                                 if (location_in_selected_text (view,
1643                                                                event->x + view->scroll_x,
1644                                                                event->y + view->scroll_y)) {
1645                                         view->selection_info.in_drag = TRUE;
1646                                 } else {
1647                                         clear_selection (view);
1648                                 }
1649
1650                                 gtk_widget_queue_draw (widget);
1651                         }
1652
1653                         view->selection_info.start.x = event->x + view->scroll_x;
1654                         view->selection_info.start.y = event->y + view->scroll_y;
1655
1656                         return TRUE;
1657                 case 2:
1658                         /* use root coordinates as reference point because
1659                          * scrolling changes window relative coordinates */
1660                         view->drag_info.start.x = event->x_root;
1661                         view->drag_info.start.y = event->y_root;
1662                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1663                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1664
1665                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1666
1667                         return TRUE;
1668                 case 3:
1669                         link = ev_view_get_link_at_location (view, event->x, event->y);
1670                         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
1671                         return TRUE;
1672         }
1673
1674         return FALSE;
1675 }
1676
1677 static void
1678 ev_view_drag_data_get (GtkWidget        *widget,
1679                        GdkDragContext   *context,
1680                        GtkSelectionData *selection_data,
1681                        guint             info,
1682                        guint             time)
1683 {
1684         EvView *view = EV_VIEW (widget);
1685
1686         if (view->selection_info.selections &&
1687             ev_document_can_get_text (view->document)) {
1688                 gchar *text;
1689
1690                 text = get_selected_text (view);
1691
1692                 gtk_selection_data_set_text (selection_data, text, strlen (text));
1693
1694                 g_free (text);
1695         }
1696 }
1697
1698 static gboolean
1699 selection_update_idle_cb (EvView *view)
1700 {
1701         compute_selections (view, &view->selection_info.start, &view->motion);
1702         view->selection_update_id = 0;
1703         return FALSE;
1704 }
1705
1706 static gboolean
1707 selection_scroll_timeout_cb (EvView *view)
1708 {
1709         gint y, shift = 0;
1710         GtkWidget *widget = GTK_WIDGET (view);
1711
1712         gtk_widget_get_pointer (widget, NULL, &y);
1713
1714         if (y > widget->allocation.height) {
1715                 shift = (y - widget->allocation.height) / 2;
1716         } else if (y < 0) {
1717                 shift = y / 2;
1718         }
1719
1720         if (shift)
1721                 gtk_adjustment_set_value (view->vadjustment,
1722                                           CLAMP (view->vadjustment->value + shift,
1723                                           view->vadjustment->lower,
1724                                           view->vadjustment->upper -
1725                                           view->vadjustment->page_size));
1726         return TRUE;
1727 }
1728
1729 static gboolean
1730 ev_view_motion_notify_event (GtkWidget      *widget,
1731                              GdkEventMotion *event)
1732 {
1733         EvView *view = EV_VIEW (widget);
1734         gint x, y;
1735
1736         if (!view->document)
1737                 return FALSE;
1738
1739         if (event->is_hint || event->window != widget->window) {
1740             gtk_widget_get_pointer (widget, &x, &y);
1741         } else {
1742             x = event->x;
1743             y = event->y;
1744         }
1745
1746         if (view->selection_info.in_drag) {
1747                 if (gtk_drag_check_threshold (widget,
1748                                               view->selection_info.start.x,
1749                                               view->selection_info.start.y,
1750                                               x, y)) {
1751                         GdkDragContext *context;
1752                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
1753
1754                         gtk_target_list_add_text_targets (target_list, 0);
1755
1756                         context = gtk_drag_begin (widget, target_list,
1757                                                   GDK_ACTION_COPY,
1758                                                   1, (GdkEvent *)event);
1759
1760                         view->selection_info.in_drag = FALSE;
1761
1762                         gtk_target_list_unref (target_list);
1763
1764                         return TRUE;
1765                 }
1766         }
1767
1768         /* For the Evince 0.4.x release, we limit selection to un-rotated
1769          * documents only.
1770          */
1771         if (view->pressed_button == 1 && view->rotation == 0) {
1772
1773                 /* Schedule timeout to scroll during selection and additionally
1774                  * scroll once to allow arbitrary speed. */
1775                 if (!view->selection_scroll_id)
1776                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
1777                 else
1778                     selection_scroll_timeout_cb (view);
1779
1780                 view->selection_info.in_selection = TRUE;
1781                 view->motion.x = x + view->scroll_x;
1782                 view->motion.y = y + view->scroll_y;
1783
1784                 /* Queue an idle to handle the motion.  We do this because
1785                  * handling any selection events in the motion could be slower
1786                  * than new motion events reach us.  We always put it in the
1787                  * idle to make sure we catch up and don't visibly lag the
1788                  * mouse. */
1789                 if (!view->selection_update_id)
1790                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
1791
1792                 return TRUE;
1793         } else if (view->pressed_button == 2) {
1794                 if (!view->drag_info.in_drag) {
1795                         gboolean start;
1796
1797                         start = gtk_drag_check_threshold (widget,
1798                                                           view->drag_info.start.x,
1799                                                           view->drag_info.start.y,
1800                                                           event->x_root,
1801                                                           event->y_root);
1802                         view->drag_info.in_drag = start;
1803                 }
1804
1805                 if (view->drag_info.in_drag) {
1806                         int dx, dy;
1807                         gdouble dhadj_value, dvadj_value;
1808
1809                         dx = event->x_root - view->drag_info.start.x;
1810                         dy = event->y_root - view->drag_info.start.y;
1811
1812                         dhadj_value = view->hadjustment->page_size *
1813                                       (gdouble)dx / widget->allocation.width;
1814                         dvadj_value = view->vadjustment->page_size *
1815                                       (gdouble)dy / widget->allocation.height;
1816
1817                         /* clamp scrolling to visible area */
1818                         gtk_adjustment_set_value (view->hadjustment,
1819                                                   MIN(view->drag_info.hadj - dhadj_value,
1820                                                       view->hadjustment->upper -
1821                                                       view->hadjustment->page_size));
1822                         gtk_adjustment_set_value (view->vadjustment,
1823                                                   MIN(view->drag_info.vadj - dvadj_value,
1824                                                       view->vadjustment->upper -
1825                                                       view->vadjustment->page_size));
1826
1827                         return TRUE;
1828                 }
1829         /* For the Evince 0.4.x release, we limit links to un-rotated documents
1830          * only.
1831          */
1832         } else if (view->pressed_button <= 0 &&
1833                    view->rotation == 0) {
1834                 handle_link_over_xy (view, x, y);
1835                 return TRUE;
1836         }
1837
1838         return FALSE;
1839 }
1840
1841 static gboolean
1842 ev_view_button_release_event (GtkWidget      *widget,
1843                               GdkEventButton *event)
1844 {
1845         EvView *view = EV_VIEW (widget);
1846         EvLink *link;
1847
1848         if (view->pressed_button == 2) {
1849                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1850         }
1851
1852         if (view->document) {
1853                 link = ev_view_get_link_at_location (view, event->x, event->y);
1854         } else {
1855                 link = NULL;
1856         }
1857
1858         view->pressed_button = -1;
1859         view->drag_info.in_drag = FALSE;
1860
1861         if (view->selection_scroll_id) {
1862             g_source_remove (view->selection_scroll_id);
1863             view->selection_scroll_id = 0;
1864         }
1865         if (view->selection_update_id) {
1866             g_source_remove (view->selection_update_id);
1867             view->selection_update_id = 0;
1868         }
1869
1870         if (view->selection_info.selections) {
1871                 ev_view_update_primary_selection (view);
1872
1873                 if (view->selection_info.in_drag) {
1874                         clear_selection (view);
1875                         gtk_widget_queue_draw (widget);
1876                 }
1877
1878                 view->selection_info.in_drag = FALSE;
1879         } else if (link) {
1880                 ev_view_goto_link (view, link);
1881         } else if (view->presentation) {
1882                 switch (event->button) {
1883                 case 1:
1884                         ev_view_next_page (view);
1885                         return TRUE;
1886                 case 3:
1887                         ev_view_previous_page (view);
1888                         return TRUE;
1889                 }
1890         }
1891
1892         return FALSE;
1893 }
1894
1895 static gint
1896 ev_view_focus_in (GtkWidget     *widget,
1897                   GdkEventFocus *event)
1898 {
1899         if (EV_VIEW (widget)->pixbuf_cache)
1900                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1901         gtk_widget_queue_draw (widget);
1902
1903         return FALSE;
1904 }
1905
1906 static gint
1907 ev_view_focus_out (GtkWidget     *widget,
1908                      GdkEventFocus *event)
1909 {
1910         if (EV_VIEW (widget)->pixbuf_cache)
1911                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1912         gtk_widget_queue_draw (widget);
1913
1914         return FALSE;
1915 }
1916
1917 static gboolean
1918 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
1919 {
1920         EvView *view = EV_VIEW (widget);
1921
1922         ev_view_set_status (view, NULL);
1923
1924         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1925             view->cursor == EV_VIEW_CURSOR_IBEAM)
1926                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1927
1928         if (view->link_tooltip) {
1929                 view->hovered_link = NULL;
1930                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1931         }
1932
1933         return FALSE;
1934 }
1935
1936 static gboolean
1937 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
1938 {
1939         EvView *view = EV_VIEW (widget);
1940
1941         handle_link_over_xy (view, event->x, event->y);
1942
1943         return FALSE;
1944 }
1945
1946 static void
1947 ev_view_style_set (GtkWidget *widget,
1948                    GtkStyle  *old_style)
1949 {
1950         if (EV_VIEW (widget)->pixbuf_cache)
1951                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1952
1953         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
1954 }
1955
1956 /*** Drawing ***/
1957
1958 static guint32
1959 ev_gdk_color_to_rgb (const GdkColor *color)
1960 {
1961   guint32 result;
1962   result = (0xff0000 | (color->red & 0xff00));
1963   result <<= 8;
1964   result |= ((color->green & 0xff00) | (color->blue >> 8));
1965   return result;
1966 }
1967
1968 static void
1969 draw_rubberband (GtkWidget *widget, GdkWindow *window,
1970                  const GdkRectangle *rect, guchar alpha)
1971 {
1972         GdkGC *gc;
1973         GdkPixbuf *pixbuf;
1974         GdkColor *fill_color_gdk;
1975         guint fill_color;
1976
1977         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
1978         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
1979
1980         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
1981                                  rect->width, rect->height);
1982         gdk_pixbuf_fill (pixbuf, fill_color);
1983
1984         gdk_draw_pixbuf (window, NULL, pixbuf,
1985                          0, 0,
1986                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1987                          rect->width, rect->height,
1988                          GDK_RGB_DITHER_NONE,
1989                          0, 0);
1990
1991         g_object_unref (pixbuf);
1992
1993         gc = gdk_gc_new (window);
1994         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
1995         gdk_draw_rectangle (window, gc, FALSE,
1996                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1997                             rect->width - 1,
1998                             rect->height - 1);
1999         g_object_unref (gc);
2000
2001         gdk_color_free (fill_color_gdk);
2002 }
2003
2004
2005 static void
2006 highlight_find_results (EvView *view, int page)
2007 {
2008         EvDocumentFind *find;
2009         int i, results = 0;
2010
2011         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2012
2013         find = EV_DOCUMENT_FIND (view->document);
2014
2015         results = ev_document_find_get_n_results (find, page);
2016
2017         for (i = 0; i < results; i++) {
2018                 EvRectangle rectangle;
2019                 GdkRectangle view_rectangle;
2020                 guchar alpha;
2021
2022                 if (i == view->find_result && page == view->find_page) {
2023                         alpha = 0x90;
2024                 } else {
2025                         alpha = 0x20;
2026                 }
2027
2028                 ev_document_find_get_result (find, page, i, &rectangle);
2029                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2030                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2031                                  &view_rectangle, alpha);
2032         }
2033 }
2034
2035 static void
2036 draw_loading_text (EvView       *view,
2037                    GdkRectangle *page_area,
2038                    GdkRectangle *expose_area)
2039 {
2040         PangoLayout *layout;
2041         PangoFontDescription *font_desc;
2042         PangoRectangle logical_rect;
2043         double real_scale;
2044         int target_width;
2045
2046         const char *loading_text = _("Loading...");
2047
2048         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2049
2050         font_desc = pango_font_description_new ();
2051
2052
2053         /* We set the font to be 10 points, get the size, and scale appropriately */
2054         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2055         pango_layout_set_font_description (layout, font_desc);
2056         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2057
2058         /* Make sure we fit the middle of the page */
2059         target_width = MAX (page_area->width / 2, 1);
2060         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2061         pango_font_description_set_size (font_desc, (int)real_scale);
2062         pango_layout_set_font_description (layout, font_desc);
2063         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2064
2065         gtk_paint_layout (GTK_WIDGET (view)->style,
2066                           GTK_WIDGET (view)->window,
2067                           GTK_WIDGET_STATE (view),
2068                           FALSE,
2069                           page_area,
2070                           GTK_WIDGET (view),
2071                           NULL,
2072                           page_area->x + (target_width/2),
2073                           page_area->y + (page_area->height - logical_rect.height) / 2,
2074                           layout);
2075
2076         pango_font_description_free (font_desc);
2077         g_object_unref (layout);
2078 }
2079
2080 static void
2081 draw_one_page (EvView          *view,
2082                gint             page,
2083                GdkRectangle    *page_area,
2084                GtkBorder       *border,
2085                GdkRectangle    *expose_area)
2086 {
2087         gint width, height;
2088         GdkPixbuf *current_pixbuf;
2089         GdkRectangle overlap;
2090         GdkRectangle real_page_area;
2091         EvViewSelection *selection;
2092
2093         g_assert (view->document);
2094         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2095                 return;
2096
2097         selection = find_selection_for_page (view, page);
2098         ev_page_cache_get_size (view->page_cache,
2099                                 page, view->rotation,
2100                                 view->scale,
2101                                 &width, &height);
2102         /* Render the document itself */
2103         real_page_area = *page_area;
2104
2105         real_page_area.x += border->left;
2106         real_page_area.y += border->top;
2107         real_page_area.width -= (border->left + border->right);
2108         real_page_area.height -= (border->top + border->bottom);
2109
2110         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2111                                          GTK_WIDGET (view),
2112                                          page_area, border);
2113
2114         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2115                 GdkPixbuf *selection_pixbuf = NULL;
2116                 GdkPixbuf *scaled_image;
2117                 GdkPixbuf *scaled_selection;
2118
2119                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2120
2121                 /* Get the selection pixbuf iff we have something to draw */
2122                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2123                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2124                                                                                  page,
2125                                                                                  view->scale,
2126                                                                                  NULL);
2127
2128                 if (current_pixbuf == NULL)
2129                         scaled_image = NULL;
2130                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2131                          height == gdk_pixbuf_get_height (current_pixbuf))
2132                         scaled_image = g_object_ref (current_pixbuf);
2133                 else
2134                         /* FIXME: We don't want to scale the whole area, just the right
2135                          * area of it */
2136                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2137                                                                 width, height,
2138                                                                 GDK_INTERP_NEAREST);
2139
2140                 if (selection_pixbuf == NULL)
2141                         scaled_selection = NULL;
2142                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2143                          height == gdk_pixbuf_get_height (selection_pixbuf))
2144                         scaled_selection = g_object_ref (selection_pixbuf);
2145                 else
2146                         /* FIXME: We don't want to scale the whole area, just the right
2147                          * area of it */
2148                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2149                                                                     width, height,
2150                                                                     GDK_INTERP_NEAREST);
2151
2152                 if (scaled_image) {
2153                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2154                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2155                                          scaled_image,
2156                                          overlap.x - real_page_area.x,
2157                                          overlap.y - real_page_area.y,
2158                                          overlap.x, overlap.y,
2159                                          overlap.width, overlap.height,
2160                                          GDK_RGB_DITHER_NORMAL,
2161                                          0, 0);
2162                         g_object_unref (scaled_image);
2163                 } else {
2164                         draw_loading_text (view,
2165                                            &real_page_area,
2166                                            expose_area);
2167                 }
2168
2169                 if (scaled_selection) {
2170                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2171                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2172                                          scaled_selection,
2173                                          overlap.x - real_page_area.x,
2174                                          overlap.y - real_page_area.y,
2175                                          overlap.x, overlap.y,
2176                                          overlap.width, overlap.height,
2177                                          GDK_RGB_DITHER_NORMAL,
2178                                          0, 0);
2179                         g_object_unref (scaled_selection);
2180                 }
2181         }
2182 }
2183
2184 /*** GObject functions ***/
2185
2186 static void
2187 ev_view_finalize (GObject *object)
2188 {
2189         EvView *view = EV_VIEW (object);
2190
2191         LOG ("Finalize");
2192
2193         g_free (view->status);
2194         g_free (view->find_status);
2195
2196         clear_selection (view);
2197
2198         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2199 }
2200
2201 static void
2202 ev_view_destroy (GtkObject *object)
2203 {
2204         EvView *view = EV_VIEW (object);
2205
2206         if (view->document) {
2207                 g_object_unref (view->document);
2208                 view->document = NULL;
2209         }
2210
2211         if (view->pixbuf_cache) {
2212                 g_object_unref (view->pixbuf_cache);
2213                 view->pixbuf_cache = NULL;
2214         }
2215
2216         if (view->link_tooltip) {
2217                 gtk_widget_destroy (view->link_tooltip);
2218         }
2219
2220         if (view->selection_scroll_id) {
2221             g_source_remove (view->selection_scroll_id);
2222             view->selection_scroll_id = 0;
2223         }
2224
2225         if (view->selection_update_id) {
2226             g_source_remove (view->selection_update_id);
2227             view->selection_update_id = 0;
2228         }
2229
2230         ev_view_set_scroll_adjustments (view, NULL, NULL);
2231
2232         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
2233 }
2234
2235 static void
2236 ev_view_set_property (GObject      *object,
2237                       guint         prop_id,
2238                       const GValue *value,
2239                       GParamSpec   *pspec)
2240 {
2241         EvView *view = EV_VIEW (object);
2242
2243         switch (prop_id)
2244         {
2245         case PROP_CONTINUOUS:
2246                 ev_view_set_continuous (view, g_value_get_boolean (value));
2247                 break;
2248         case PROP_DUAL_PAGE:
2249                 ev_view_set_dual_page (view, g_value_get_boolean (value));
2250                 break;
2251         case PROP_FULLSCREEN:
2252                 ev_view_set_fullscreen (view, g_value_get_boolean (value));
2253                 break;
2254         case PROP_PRESENTATION:
2255                 ev_view_set_presentation (view, g_value_get_boolean (value));
2256                 break;
2257         case PROP_SIZING_MODE:
2258                 ev_view_set_sizing_mode (view, g_value_get_enum (value));
2259                 break;
2260         case PROP_ZOOM:
2261                 ev_view_set_zoom (view, g_value_get_double (value), FALSE);
2262                 break;
2263         case PROP_ROTATION:
2264                 ev_view_set_rotation (view, g_value_get_int (value));
2265                 break;
2266         default:
2267                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2268         }
2269 }
2270
2271 static AtkObject *
2272 ev_view_get_accessible (GtkWidget *widget)
2273 {
2274         static gboolean first_time = TRUE;
2275
2276         if (first_time) {
2277                 AtkObjectFactory *factory;
2278                 AtkRegistry *registry;
2279                 GType derived_type;
2280                 GType derived_atk_type;
2281
2282                 /*
2283                  * Figure out whether accessibility is enabled by looking at the
2284                  * type of the accessible object which would be created for
2285                  * the parent type of EvView.
2286                  */
2287                 derived_type = g_type_parent (EV_TYPE_VIEW);
2288
2289                 registry = atk_get_default_registry ();
2290                 factory = atk_registry_get_factory (registry,
2291                                                     derived_type);
2292                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
2293                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
2294                         atk_registry_set_factory_type (registry,
2295                                                        EV_TYPE_VIEW,
2296                                                        ev_view_accessible_factory_get_type ());
2297                 first_time = FALSE;
2298         }
2299         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
2300 }
2301
2302 static void
2303 ev_view_get_property (GObject *object,
2304                       guint prop_id,
2305                       GValue *value,
2306                       GParamSpec *pspec)
2307 {
2308         EvView *view = EV_VIEW (object);
2309
2310         switch (prop_id)
2311         {
2312         case PROP_STATUS:
2313                 g_value_set_string (value, view->status);
2314                 break;
2315         case PROP_FIND_STATUS:
2316                 g_value_set_string (value, view->status);
2317                 break;
2318         case PROP_CONTINUOUS:
2319                 g_value_set_boolean (value, view->continuous);
2320                 break;
2321         case PROP_DUAL_PAGE:
2322                 g_value_set_boolean (value, view->dual_page);
2323                 break;
2324         case PROP_FULLSCREEN:
2325                 g_value_set_boolean (value, view->fullscreen);
2326                 break;
2327         case PROP_PRESENTATION:
2328                 g_value_set_boolean (value, view->presentation);
2329                 break;
2330         case PROP_SIZING_MODE:
2331                 g_value_set_enum (value, view->sizing_mode);
2332                 break;
2333         case PROP_ZOOM:
2334                 g_value_set_double (value, view->scale);
2335                 break;
2336         case PROP_ROTATION:
2337                 g_value_set_int (value, view->rotation);
2338                 break;
2339         case PROP_HAS_SELECTION:
2340                 g_value_set_boolean (value,
2341                                      view->selection_info.selections != NULL);
2342                 break;
2343         default:
2344                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2345         }
2346 }
2347
2348 static void
2349 ev_view_class_init (EvViewClass *class)
2350 {
2351         GObjectClass *object_class = G_OBJECT_CLASS (class);
2352         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
2353         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
2354         GtkBindingSet *binding_set;
2355
2356         object_class->finalize = ev_view_finalize;
2357         object_class->set_property = ev_view_set_property;
2358         object_class->get_property = ev_view_get_property;
2359
2360         widget_class->expose_event = ev_view_expose_event;
2361         widget_class->button_press_event = ev_view_button_press_event;
2362         widget_class->motion_notify_event = ev_view_motion_notify_event;
2363         widget_class->button_release_event = ev_view_button_release_event;
2364         widget_class->focus_in_event = ev_view_focus_in;
2365         widget_class->focus_out_event = ev_view_focus_out;
2366         widget_class->get_accessible = ev_view_get_accessible;
2367         widget_class->size_request = ev_view_size_request;
2368         widget_class->size_allocate = ev_view_size_allocate;
2369         widget_class->realize = ev_view_realize;
2370         widget_class->scroll_event = ev_view_scroll_event;
2371         widget_class->enter_notify_event = ev_view_enter_notify_event;
2372         widget_class->leave_notify_event = ev_view_leave_notify_event;
2373         widget_class->style_set = ev_view_style_set;
2374         widget_class->drag_data_get = ev_view_drag_data_get;
2375         gtk_object_class->destroy = ev_view_destroy;
2376
2377         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
2378         class->binding_activated = ev_view_binding_activated;
2379
2380         widget_class->set_scroll_adjustments_signal =
2381             g_signal_new ("set-scroll-adjustments",
2382                           G_OBJECT_CLASS_TYPE (object_class),
2383                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2384                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
2385                           NULL, NULL,
2386                           ev_marshal_VOID__OBJECT_OBJECT,
2387                           G_TYPE_NONE, 2,
2388                           GTK_TYPE_ADJUSTMENT,
2389                           GTK_TYPE_ADJUSTMENT);
2390
2391         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
2392                          G_TYPE_FROM_CLASS (object_class),
2393                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2394                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
2395                          NULL, NULL,
2396                          ev_marshal_VOID__ENUM_BOOLEAN,
2397                          G_TYPE_NONE, 2,
2398                          GTK_TYPE_SCROLL_TYPE,
2399                          G_TYPE_BOOLEAN);
2400
2401         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
2402                          G_TYPE_FROM_CLASS (object_class),
2403                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2404                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
2405                          NULL, NULL,
2406                          ev_marshal_VOID__VOID,
2407                          G_TYPE_NONE, 0, G_TYPE_NONE);
2408         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
2409                          G_TYPE_FROM_CLASS (object_class),
2410                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2411                          G_STRUCT_OFFSET (EvViewClass, external_link),
2412                          NULL, NULL,
2413                          g_cclosure_marshal_VOID__OBJECT,
2414                          G_TYPE_NONE, 1,
2415                          G_TYPE_OBJECT);
2416         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
2417                          G_TYPE_FROM_CLASS (object_class),
2418                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2419                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
2420                          NULL, NULL,
2421                          g_cclosure_marshal_VOID__OBJECT,
2422                          G_TYPE_NONE, 1,
2423                          G_TYPE_OBJECT);
2424
2425         g_object_class_install_property (object_class,
2426                                          PROP_STATUS,
2427                                          g_param_spec_string ("status",
2428                                                               "Status Message",
2429                                                               "The status message",
2430                                                               NULL,
2431                                                               G_PARAM_READABLE));
2432
2433         g_object_class_install_property (object_class,
2434                                          PROP_FIND_STATUS,
2435                                          g_param_spec_string ("find-status",
2436                                                               "Find Status Message",
2437                                                               "The find status message",
2438                                                               NULL,
2439                                                               G_PARAM_READABLE));
2440
2441         g_object_class_install_property (object_class,
2442                                          PROP_CONTINUOUS,
2443                                          g_param_spec_boolean ("continuous",
2444                                                                "Continuous",
2445                                                                "Continuous scrolling mode",
2446                                                                TRUE,
2447                                                                G_PARAM_READWRITE));
2448
2449         g_object_class_install_property (object_class,
2450                                          PROP_DUAL_PAGE,
2451                                          g_param_spec_boolean ("dual-page",
2452                                                                "Dual Page",
2453                                                                "Two pages visible at once",
2454                                                                FALSE,
2455                                                                G_PARAM_READWRITE));
2456         g_object_class_install_property (object_class,
2457                                          PROP_FULLSCREEN,
2458                                          g_param_spec_boolean ("fullscreen",
2459                                                                "Full Screen",
2460                                                                "Draw page in a fullscreen fashion",
2461                                                                FALSE,
2462                                                                G_PARAM_READWRITE));
2463         g_object_class_install_property (object_class,
2464                                          PROP_PRESENTATION,
2465                                          g_param_spec_boolean ("presentation",
2466                                                                "Presentation",
2467                                                                "Draw page in presentation mode",
2468                                                                TRUE,
2469                                                                G_PARAM_READWRITE));
2470
2471         g_object_class_install_property (object_class,
2472                                          PROP_SIZING_MODE,
2473                                          g_param_spec_enum ("sizing-mode",
2474                                                             "Sizing Mode",
2475                                                             "Sizing Mode",
2476                                                             EV_TYPE_SIZING_MODE,
2477                                                             EV_SIZING_FIT_WIDTH,
2478                                                             G_PARAM_READWRITE));
2479
2480         g_object_class_install_property (object_class,
2481                                          PROP_ZOOM,
2482                                          g_param_spec_double ("zoom",
2483                                                               "Zoom factor",
2484                                                                "Zoom factor",
2485                                                                MIN_SCALE,
2486                                                                MAX_SCALE,
2487                                                                1.0,
2488                                                                G_PARAM_READWRITE));
2489         g_object_class_install_property (object_class,
2490                                          PROP_ROTATION,
2491                                          g_param_spec_double ("rotation",
2492                                                               "Rotation",
2493                                                                "Rotation",
2494                                                                0,
2495                                                                360,
2496                                                                0,
2497                                                                G_PARAM_READWRITE));
2498         g_object_class_install_property (object_class,
2499                                          PROP_HAS_SELECTION,
2500                                          g_param_spec_boolean ("has-selection",
2501                                                                "Has selection",
2502                                                                "The view has selections",
2503                                                                FALSE,
2504                                                                G_PARAM_READABLE));
2505
2506         binding_set = gtk_binding_set_by_class (class);
2507
2508         add_scroll_binding_keypad (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
2509         add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
2510         add_scroll_binding_keypad (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
2511         add_scroll_binding_keypad (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
2512 }
2513
2514 static void
2515 ev_view_init (EvView *view)
2516 {
2517         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
2518
2519         view->spacing = 5;
2520         view->scale = 1.0;
2521         view->current_page = 0;
2522         view->pressed_button = -1;
2523         view->cursor = EV_VIEW_CURSOR_NORMAL;
2524         view->drag_info.in_drag = FALSE;
2525         view->selection_info.selections = NULL;
2526         view->selection_info.in_selection = FALSE;
2527         view->selection_info.in_drag = FALSE;
2528         view->selection_mode = EV_VIEW_SELECTION_TEXT;
2529         view->continuous = TRUE;
2530         view->dual_page = FALSE;
2531         view->presentation = FALSE;
2532         view->fullscreen = FALSE;
2533         view->sizing_mode = EV_SIZING_FIT_WIDTH;
2534         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2535 }
2536
2537 /*** Callbacks ***/
2538
2539 static void
2540 find_changed_cb (EvDocument *document, int page, EvView *view)
2541 {
2542         jump_to_find_page (view, EV_VIEW_FIND_NEXT);
2543         jump_to_find_result (view);
2544         update_find_status_message (view);
2545
2546         if (view->current_page == page)
2547                 gtk_widget_queue_draw (GTK_WIDGET (view));
2548 }
2549
2550 static void
2551 job_finished_cb (EvPixbufCache *pixbuf_cache,
2552                  EvView        *view)
2553 {
2554         gtk_widget_queue_draw (GTK_WIDGET (view));
2555 }
2556
2557 static void
2558 page_changed_cb (EvPageCache *page_cache,
2559                  int          new_page,
2560                  EvView      *view)
2561 {
2562         if (view->current_page != new_page) {
2563
2564                 view->current_page = new_page;
2565                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2566                 gtk_widget_queue_resize (GTK_WIDGET (view));
2567
2568                 if (EV_IS_DOCUMENT_FIND (view->document)) {
2569                         view->find_page = new_page;
2570                         view->find_result = 0;
2571                         update_find_status_message (view);
2572                 }
2573         }
2574 }
2575
2576 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
2577                                          EvView *view)
2578 {
2579         int dx = 0, dy = 0;
2580
2581         if (! GTK_WIDGET_REALIZED (view))
2582                 return;
2583
2584         if (view->hadjustment) {
2585                 dx = view->scroll_x - (int) view->hadjustment->value;
2586                 view->scroll_x = (int) view->hadjustment->value;
2587         } else {
2588                 view->scroll_x = 0;
2589         }
2590
2591         if (view->vadjustment) {
2592                 dy = view->scroll_y - (int) view->vadjustment->value;
2593                 view->scroll_y = (int) view->vadjustment->value;
2594         } else {
2595                 view->scroll_y = 0;
2596         }
2597
2598
2599         if (view->pending_resize)
2600                 gtk_widget_queue_draw (GTK_WIDGET (view));
2601         else
2602                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
2603
2604
2605         if (view->document)
2606                 view_update_range_and_current_page (view);
2607 }
2608
2609 GtkWidget*
2610 ev_view_new (void)
2611 {
2612         GtkWidget *view;
2613
2614         view = g_object_new (EV_TYPE_VIEW, NULL);
2615
2616         return view;
2617 }
2618
2619 static void
2620 setup_caches (EvView *view)
2621 {
2622         view->page_cache = ev_page_cache_get (view->document);
2623         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
2624         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
2625         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
2626 }
2627
2628 static void
2629 clear_caches (EvView *view)
2630 {
2631         if (view->pixbuf_cache) {
2632                 g_object_unref (view->pixbuf_cache);
2633                 view->pixbuf_cache = NULL;
2634         }
2635
2636         if (view->page_cache) {
2637                 view->page_cache = NULL;
2638         }
2639 }
2640
2641 void
2642 ev_view_set_document (EvView     *view,
2643                       EvDocument *document)
2644 {
2645         g_return_if_fail (EV_IS_VIEW (view));
2646
2647         if (document != view->document) {
2648                 clear_caches (view);
2649
2650                 if (view->document) {
2651                         g_signal_handlers_disconnect_by_func (view->document,
2652                                                               find_changed_cb,
2653                                                               view);
2654                         g_object_unref (view->document);
2655                         view->page_cache = NULL;
2656
2657                 }
2658
2659                 view->document = document;
2660                 view->find_page = 0;
2661                 view->find_result = 0;
2662
2663                 if (view->document) {
2664                         g_object_ref (view->document);
2665                         if (EV_IS_DOCUMENT_FIND (view->document)) {
2666                                 g_signal_connect (view->document,
2667                                                   "find_changed",
2668                                                   G_CALLBACK (find_changed_cb),
2669                                                   view);
2670                         }
2671
2672                         setup_caches (view);
2673                 }
2674
2675                 gtk_widget_queue_resize (GTK_WIDGET (view));
2676         }
2677 }
2678
2679 /*** Zoom and sizing mode ***/
2680
2681 #define EPSILON 0.0000001
2682 void
2683 ev_view_set_zoom (EvView   *view,
2684                   double    factor,
2685                   gboolean  relative)
2686 {
2687         double scale;
2688
2689         if (relative)
2690                 scale = view->scale * factor;
2691         else
2692                 scale = factor;
2693
2694         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
2695
2696         if (ABS (view->scale - scale) < EPSILON)
2697                 return;
2698
2699         view->scale = scale;
2700         view->pending_resize = TRUE;
2701
2702         gtk_widget_queue_resize (GTK_WIDGET (view));
2703
2704         g_object_notify (G_OBJECT (view), "zoom");
2705 }
2706
2707 double
2708 ev_view_get_zoom (EvView *view)
2709 {
2710         return view->scale;
2711 }
2712
2713 gboolean
2714 ev_view_get_continuous (EvView *view)
2715 {
2716         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2717
2718         return view->continuous;
2719 }
2720
2721 void
2722 ev_view_set_continuous (EvView   *view,
2723                         gboolean  continuous)
2724 {
2725         g_return_if_fail (EV_IS_VIEW (view));
2726
2727         continuous = continuous != FALSE;
2728
2729         if (view->continuous != continuous) {
2730                 view->continuous = continuous;
2731                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2732                 gtk_widget_queue_resize (GTK_WIDGET (view));
2733         }
2734
2735         g_object_notify (G_OBJECT (view), "continuous");
2736 }
2737
2738 gboolean
2739 ev_view_get_dual_page (EvView *view)
2740 {
2741         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2742
2743         return view->dual_page;
2744 }
2745
2746 void
2747 ev_view_set_dual_page (EvView   *view,
2748                        gboolean  dual_page)
2749 {
2750         g_return_if_fail (EV_IS_VIEW (view));
2751
2752         dual_page = dual_page != FALSE;
2753
2754         if (view->dual_page == dual_page)
2755                 return;
2756
2757         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2758         view->dual_page = dual_page;
2759         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
2760          * preload_cache_size to be 2 if dual_page is set.
2761          */
2762         gtk_widget_queue_resize (GTK_WIDGET (view));
2763
2764         g_object_notify (G_OBJECT (view), "dual-page");
2765 }
2766
2767 void
2768 ev_view_set_fullscreen (EvView   *view,
2769                          gboolean  fullscreen)
2770 {
2771         g_return_if_fail (EV_IS_VIEW (view));
2772
2773         fullscreen = fullscreen != FALSE;
2774
2775         if (view->fullscreen == fullscreen)
2776                 return;
2777
2778         view->fullscreen = fullscreen;
2779         gtk_widget_queue_resize (GTK_WIDGET (view));
2780
2781         g_object_notify (G_OBJECT (view), "fullscreen");
2782 }
2783
2784 gboolean
2785 ev_view_get_fullscreen (EvView *view)
2786 {
2787         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2788
2789         return view->fullscreen;
2790 }
2791
2792 void
2793 ev_view_set_presentation (EvView   *view,
2794                           gboolean  presentation)
2795 {
2796         g_return_if_fail (EV_IS_VIEW (view));
2797
2798         presentation = presentation != FALSE;
2799
2800         if (view->presentation == presentation)
2801                 return;
2802
2803         view->presentation = presentation;
2804         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2805         gtk_widget_queue_resize (GTK_WIDGET (view));
2806
2807         if (GTK_WIDGET_REALIZED (view)) {
2808                 if (view->presentation)
2809                         gdk_window_set_background (GTK_WIDGET(view)->window,
2810                                                    &GTK_WIDGET (view)->style->black);
2811                 else
2812                         gdk_window_set_background (GTK_WIDGET(view)->window,
2813                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
2814         }
2815
2816
2817         g_object_notify (G_OBJECT (view), "presentation");
2818 }
2819
2820 gboolean
2821 ev_view_get_presentation (EvView *view)
2822 {
2823         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2824
2825         return view->presentation;
2826 }
2827
2828 void
2829 ev_view_set_sizing_mode (EvView       *view,
2830                          EvSizingMode  sizing_mode)
2831 {
2832         g_return_if_fail (EV_IS_VIEW (view));
2833
2834         if (view->sizing_mode == sizing_mode)
2835                 return;
2836
2837         view->sizing_mode = sizing_mode;
2838         gtk_widget_queue_resize (GTK_WIDGET (view));
2839
2840         g_object_notify (G_OBJECT (view), "sizing-mode");
2841 }
2842
2843 EvSizingMode
2844 ev_view_get_sizing_mode (EvView *view)
2845 {
2846         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
2847
2848         return view->sizing_mode;
2849 }
2850
2851 gboolean
2852 ev_view_can_zoom_in (EvView *view)
2853 {
2854         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
2855 }
2856
2857 gboolean
2858 ev_view_can_zoom_out (EvView *view)
2859 {
2860         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
2861 }
2862
2863 void
2864 ev_view_zoom_in (EvView *view)
2865 {
2866         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2867
2868         view->pending_scroll = SCROLL_TO_CENTER;
2869         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
2870 }
2871
2872 void
2873 ev_view_zoom_out (EvView *view)
2874 {
2875         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2876
2877         view->pending_scroll = SCROLL_TO_CENTER;
2878         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
2879 }
2880
2881 void
2882 ev_view_rotate_right (EvView *view)
2883 {
2884         int rotation = view->rotation + 90;
2885
2886         if (rotation >= 360) {
2887                 rotation -= 360;
2888         }
2889
2890         ev_view_set_rotation (view, rotation);
2891 }
2892
2893 void
2894 ev_view_rotate_left (EvView *view)
2895 {
2896         int rotation = view->rotation - 90;
2897
2898         if (rotation < 0) {
2899                 rotation += 360;
2900         }
2901
2902         ev_view_set_rotation (view, rotation);
2903 }
2904
2905 void
2906 ev_view_set_rotation (EvView *view, int rotation)
2907 {
2908         view->rotation = rotation;
2909
2910         if (view->pixbuf_cache) {
2911                 ev_pixbuf_cache_clear (view->pixbuf_cache);
2912                 gtk_widget_queue_resize (GTK_WIDGET (view));
2913         }
2914
2915         if (rotation != 0)
2916                 clear_selection (view);
2917
2918         g_object_notify (G_OBJECT (view), "rotation");
2919 }
2920
2921 int
2922 ev_view_get_rotation (EvView *view)
2923 {
2924         return view->rotation;
2925 }
2926
2927 static double
2928 zoom_for_size_fit_width (int doc_width,
2929                          int doc_height,
2930                          int target_width,
2931                          int target_height,
2932                          int vsb_width)
2933 {
2934         double scale;
2935
2936         scale = (double)target_width / doc_width;
2937
2938         if (doc_height * scale > target_height)
2939                 scale = (double) (target_width - vsb_width) / doc_width;
2940
2941         return scale;
2942 }
2943
2944 static double
2945 zoom_for_size_fit_height (int doc_width,
2946                           int doc_height,
2947                           int target_width,
2948                           int target_height,
2949                           int vsb_height)
2950 {
2951         double scale;
2952
2953         scale = (double)target_height / doc_height;
2954
2955         if (doc_width * scale > target_width)
2956                 scale = (double) (target_height - vsb_height) / doc_height;
2957
2958         return scale;
2959 }
2960
2961 static double
2962 zoom_for_size_best_fit (int doc_width,
2963                         int doc_height,
2964                         int target_width,
2965                         int target_height,
2966                         int vsb_width,
2967                         int hsb_width)
2968 {
2969         double w_scale;
2970         double h_scale;
2971
2972         w_scale = (double)target_width / doc_width;
2973         h_scale = (double)target_height / doc_height;
2974
2975         if (doc_height * w_scale > target_height)
2976                 w_scale = (double) (target_width - vsb_width) / doc_width;
2977         if (doc_width * h_scale > target_width)
2978                 h_scale = (double) (target_height - hsb_width) / doc_height;
2979
2980         return MIN (w_scale, h_scale);
2981 }
2982
2983
2984 static void
2985 ev_view_zoom_for_size_presentation (EvView *view,
2986                                     int     width,
2987                                     int     height)
2988 {
2989         int doc_width, doc_height;
2990         gdouble scale;
2991
2992         ev_page_cache_get_size (view->page_cache,
2993                                 view->current_page,
2994                                 view->rotation,
2995                                 1.0,
2996                                 &doc_width,
2997                                 &doc_height);
2998         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
2999         ev_view_set_zoom (view, scale, FALSE);
3000 }
3001
3002 static void
3003 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3004                            int     width,
3005                            int     height,
3006                            int     vsb_width,
3007                            int     hsb_height)
3008 {
3009         int doc_width, doc_height;
3010         GtkBorder border;
3011         gdouble scale;
3012
3013         ev_page_cache_get_max_width (view->page_cache,
3014                                      view->rotation,
3015                                      1.0,
3016                                      &doc_width);
3017         ev_page_cache_get_max_height (view->page_cache,
3018                                       view->rotation,
3019                                       1.0,
3020                                       &doc_height);
3021         compute_border (view, doc_width, doc_height, &border);
3022
3023         doc_width = doc_width * 2;
3024         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3025         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3026
3027         /* FIXME: We really need to calculate the overall height here, not the
3028          * page height.  We assume there's always a vertical scrollbar for
3029          * now.  We need to fix this. */
3030         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3031                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3032         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3033                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3034         else
3035                 g_assert_not_reached ();
3036
3037         ev_view_set_zoom (view, scale, FALSE);
3038 }
3039
3040 static void
3041 ev_view_zoom_for_size_continuous (EvView *view,
3042                                   int     width,
3043                                   int     height,
3044                                   int     vsb_width,
3045                                   int     hsb_height)
3046 {
3047         int doc_width, doc_height;
3048         GtkBorder border;
3049         gdouble scale;
3050
3051         ev_page_cache_get_max_width (view->page_cache,
3052                                      view->rotation,
3053                                      1.0,
3054                                      &doc_width);
3055         ev_page_cache_get_max_height (view->page_cache,
3056                                       view->rotation,
3057                                       1.0,
3058                                       &doc_height);
3059         compute_border (view, doc_width, doc_height, &border);
3060
3061         width -= (border.left + border.right + 2 * view->spacing);
3062         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3063
3064         /* FIXME: We really need to calculate the overall height here, not the
3065          * page height.  We assume there's always a vertical scrollbar for
3066          * now.  We need to fix this. */
3067         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3068                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3069         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3070                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3071         else
3072                 g_assert_not_reached ();
3073
3074         ev_view_set_zoom (view, scale, FALSE);
3075 }
3076
3077 static void
3078 ev_view_zoom_for_size_dual_page (EvView *view,
3079                                  int     width,
3080                                  int     height,
3081                                  int     vsb_width,
3082                                  int     hsb_height)
3083 {
3084         GtkBorder border;
3085         gint doc_width, doc_height;
3086         gdouble scale;
3087         gint other_page;
3088
3089         other_page = view->current_page ^ 1;
3090
3091         /* Find the largest of the two. */
3092         ev_page_cache_get_size (view->page_cache,
3093                                 view->current_page,
3094                                 view->rotation,
3095                                 1.0,
3096                                 &doc_width, &doc_height);
3097
3098         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
3099                 gint width_2, height_2;
3100                 ev_page_cache_get_size (view->page_cache,
3101                                         other_page,
3102                                         view->rotation,
3103                                         1.0,
3104                                         &width_2, &height_2);
3105                 if (width_2 > doc_width)
3106                         doc_width = width_2;
3107                 if (height_2 > doc_height)
3108                         doc_height = height_2;
3109         }
3110         compute_border (view, doc_width, doc_height, &border);
3111
3112         doc_width = doc_width * 2;
3113         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
3114         height -= (border.top + border.bottom + 2 * view->spacing);
3115
3116         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3117                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3118         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3119                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3120         else
3121                 g_assert_not_reached ();
3122
3123         ev_view_set_zoom (view, scale, FALSE);
3124 }
3125
3126 static void
3127 ev_view_zoom_for_size_single_page (EvView *view,
3128                                    int     width,
3129                                    int     height,
3130                                    int     vsb_width,
3131                                    int     hsb_height)
3132 {
3133         int doc_width, doc_height;
3134         GtkBorder border;
3135         gdouble scale;
3136
3137         ev_page_cache_get_size (view->page_cache,
3138                                 view->current_page,
3139                                 view->rotation,
3140                                 1.0,
3141                                 &doc_width,
3142                                 &doc_height);
3143         /* Get an approximate border */
3144         compute_border (view, width, height, &border);
3145
3146         width -= (border.left + border.right + 2 * view->spacing);
3147         height -= (border.top + border.bottom + 2 * view->spacing);
3148
3149         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3150                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3151         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3152                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3153         else
3154                 g_assert_not_reached ();
3155
3156         ev_view_set_zoom (view, scale, FALSE);
3157 }
3158
3159 void
3160 ev_view_set_zoom_for_size (EvView *view,
3161                            int     width,
3162                            int     height,
3163                            int     vsb_width,
3164                            int     hsb_height)
3165 {
3166         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
3167                           view->sizing_mode == EV_SIZING_BEST_FIT);
3168         g_return_if_fail (width >= 0);
3169         g_return_if_fail (height >= 0);
3170
3171         if (view->document == NULL)
3172                 return;
3173
3174         if (view->presentation)
3175                 ev_view_zoom_for_size_presentation (view, width, height);
3176         else if (view->continuous && view->dual_page)
3177                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
3178         else if (view->continuous)
3179                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
3180         else if (view->dual_page)
3181                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
3182         else
3183                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
3184 }
3185
3186 /*** Status text messages ***/
3187
3188 const char *
3189 ev_view_get_status (EvView *view)
3190 {
3191         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3192
3193         return view->status;
3194 }
3195
3196 static void
3197 ev_view_set_status (EvView *view, const char *message)
3198 {
3199         g_return_if_fail (EV_IS_VIEW (view));
3200
3201         if (message != view->status) {
3202                 g_free (view->status);
3203                 view->status = g_strdup (message);
3204                 g_object_notify (G_OBJECT (view), "status");
3205         }
3206 }
3207
3208 static void
3209 update_find_status_message (EvView *view)
3210 {
3211         char *message;
3212
3213         if (view->current_page == view->find_page) {
3214                 int results;
3215
3216                 results = ev_document_find_get_n_results
3217                                 (EV_DOCUMENT_FIND (view->document),
3218                                  view->current_page);
3219                 /* TRANS: Sometimes this could be better translated as
3220                    "%d hit(s) on this page".  Therefore this string
3221                    contains plural cases. */
3222                 message = g_strdup_printf (ngettext ("%d found on this page",
3223                                                      "%d found on this page",
3224                                                      results),
3225                                            results);
3226         } else {
3227                 double percent;
3228
3229                 percent = ev_document_find_get_progress
3230                                 (EV_DOCUMENT_FIND (view->document));
3231                 if (percent >= (1.0 - 1e-10)) {
3232                         message = g_strdup (_("Not found"));
3233                 } else {
3234                         message = g_strdup_printf (_("%3d%% remaining to search"),
3235                                                    (int) ((1.0 - percent) * 100));
3236                 }
3237
3238         }
3239         ev_view_set_find_status (view, message);
3240         g_free (message);
3241 }
3242
3243 const char *
3244 ev_view_get_find_status (EvView *view)
3245 {
3246         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3247
3248         return view->find_status;
3249 }
3250
3251 static void
3252 ev_view_set_find_status (EvView *view, const char *message)
3253 {
3254         g_return_if_fail (EV_IS_VIEW (view));
3255
3256         g_free (view->find_status);
3257         view->find_status = g_strdup (message);
3258         g_object_notify (G_OBJECT (view), "find-status");
3259 }
3260
3261 /*** Find ***/
3262
3263 static void
3264 jump_to_find_result (EvView *view)
3265 {
3266         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3267         EvRectangle rect;
3268         GdkRectangle view_rect;
3269         int n_results;
3270         int page = view->find_page;
3271
3272         n_results = ev_document_find_get_n_results (find, page);
3273
3274         if (n_results > 0  && view->find_result < n_results) {
3275                 ev_document_find_get_result
3276                         (find, page, view->find_result, &rect);
3277
3278                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
3279                 ensure_rectangle_is_visible (view, &view_rect);
3280         }
3281 }
3282
3283 static void
3284 jump_to_find_page (EvView *view, EvViewFindDirection direction)
3285 {
3286         int n_pages, i;
3287
3288         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3289
3290         for (i = 0; i < n_pages; i++) {
3291                 int has_results;
3292                 int page;
3293
3294                 if (direction == EV_VIEW_FIND_NEXT)
3295                         page = view->find_page + i;
3296                 else
3297                         page = view->find_page - i;
3298
3299
3300                 if (page >= n_pages) {
3301                         page = page - n_pages;
3302                 }
3303                 if (page < 0)
3304                         page = page + n_pages;
3305
3306                 has_results = ev_document_find_page_has_results
3307                                 (EV_DOCUMENT_FIND (view->document), page);
3308                 if (has_results == -1) {
3309                         view->find_page = page;
3310                         break;
3311                 } else if (has_results == 1) {
3312                         ev_page_cache_set_current_page (view->page_cache, page);
3313                         break;
3314                 }
3315         }
3316 }
3317
3318 gboolean
3319 ev_view_can_find_next (EvView *view)
3320 {
3321         if (EV_IS_DOCUMENT_FIND (view->document)) {
3322                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3323                 int i, n_pages;
3324
3325                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
3326                 for (i = 0; i < n_pages; i++) {
3327                         if (ev_document_find_get_n_results (find, i) > 0) {
3328                                 return TRUE;
3329                         }
3330                 }
3331         }
3332
3333         return FALSE;
3334 }
3335
3336 void
3337 ev_view_find_next (EvView *view)
3338 {
3339         int n_results, n_pages;
3340         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3341
3342         n_results = ev_document_find_get_n_results (find, view->current_page);
3343
3344         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3345
3346         view->find_result++;
3347
3348         if (view->find_result >= n_results) {
3349
3350                 view->find_result = 0;
3351                 view->find_page++;
3352                 if (view->find_page >= n_pages) {
3353                         view->find_page = 0;
3354                 }
3355
3356                 jump_to_find_page (view, EV_VIEW_FIND_NEXT);
3357                 jump_to_find_result (view);
3358         } else {
3359                 jump_to_find_result (view);
3360                 gtk_widget_queue_draw (GTK_WIDGET (view));
3361         }
3362 }
3363
3364 void
3365 ev_view_find_previous (EvView *view)
3366 {
3367         int n_results, n_pages;
3368         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3369         EvPageCache *page_cache;
3370
3371         page_cache = ev_page_cache_get (view->document);
3372
3373         n_results = ev_document_find_get_n_results (find, view->current_page);
3374
3375         n_pages = ev_page_cache_get_n_pages (page_cache);
3376
3377         view->find_result--;
3378
3379         if (view->find_result < 0) {
3380
3381                 view->find_page--;
3382                 if (view->find_page < 0) {
3383                         view->find_page = n_pages - 1;
3384                 }
3385
3386                 jump_to_find_page (view, EV_VIEW_FIND_PREV);
3387                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
3388                 jump_to_find_result (view);
3389         } else {
3390                 jump_to_find_result (view);
3391                 gtk_widget_queue_draw (GTK_WIDGET (view));
3392         }
3393 }
3394
3395 /*** Selections ***/
3396
3397 /* compute_new_selection_rect/text calculates the area currently selected by
3398  * view_rect.  each handles a different mode;
3399  */
3400 static GList *
3401 compute_new_selection_rect (EvView       *view,
3402                             GdkPoint     *start,
3403                             GdkPoint     *stop)
3404 {
3405         GdkRectangle view_rect;
3406         int n_pages, i;
3407         GList *list = NULL;
3408
3409         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
3410
3411         view_rect.x = MIN (start->x, stop->x);
3412         view_rect.y = MIN (start->y, stop->y);
3413         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
3414         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
3415
3416         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3417
3418         for (i = 0; i < n_pages; i++) {
3419                 GdkRectangle page_area;
3420                 GtkBorder border;
3421
3422                 if (get_page_extents (view, i, &page_area, &border)) {
3423                         GdkRectangle overlap;
3424
3425                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
3426                                 EvViewSelection *selection;
3427
3428                                 selection = g_new0 (EvViewSelection, 1);
3429                                 selection->page = i;
3430                                 view_rect_to_doc_rect (view, &overlap, &page_area,
3431                                                        &(selection->rect));
3432
3433                                 list = g_list_append (list, selection);
3434                         }
3435                 }
3436         }
3437
3438         return list;
3439 }
3440
3441 static gboolean
3442 gdk_rectangle_point_in (GdkRectangle *rectangle,
3443                         GdkPoint     *point)
3444 {
3445         return rectangle->x <= point->x &&
3446                 rectangle->y <= point->y &&
3447                 point->x < rectangle->x + rectangle->width &&
3448                 point->y < rectangle->y + rectangle->height;
3449 }
3450
3451 static GList *
3452 compute_new_selection_text (EvView   *view,
3453                             GdkPoint *start,
3454                             GdkPoint *stop)
3455 {
3456         int n_pages, i, first, last;
3457         GList *list = NULL;
3458         EvViewSelection *selection;
3459         gint width, height;
3460         int start_page, end_page;
3461
3462         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
3463
3464         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3465
3466         /* First figure out the range of pages the selection
3467          * affects. */
3468         first = n_pages;
3469         last = 0;
3470         if (view->continuous) {
3471                 start_page = 0;
3472                 end_page = n_pages;
3473         } else if (view->dual_page) {
3474                 start_page = view->start_page;
3475                 end_page = view->end_page + 1;
3476         } else {
3477                 start_page = view->current_page;
3478                 end_page = view->current_page + 1;
3479         }
3480
3481         for (i = start_page; i < end_page; i++) {
3482                 GdkRectangle page_area;
3483                 GtkBorder border;
3484
3485                 get_page_extents (view, i, &page_area, &border);
3486                 if (gdk_rectangle_point_in (&page_area, start) ||
3487                     gdk_rectangle_point_in (&page_area, stop)) {
3488                         if (first == n_pages)
3489                                 first = i;
3490                         last = i;
3491                 }
3492
3493         }
3494
3495
3496
3497         /* Now create a list of EvViewSelection's for the affected
3498          * pages.  This could be an empty list, a list of just one
3499          * page or a number of pages.*/
3500         for (i = first; i < last + 1; i++) {
3501                 GdkRectangle page_area;
3502                 GtkBorder border;
3503                 GdkPoint *point;
3504
3505                 ev_page_cache_get_size (view->page_cache, i,
3506                                         view->rotation,
3507                                         1.0, &width, &height);
3508
3509                 selection = g_new0 (EvViewSelection, 1);
3510                 selection->page = i;
3511                 selection->rect.x1 = selection->rect.y1 = 0;
3512                 selection->rect.x2 = width;
3513                 selection->rect.y2 = height;
3514
3515                 get_page_extents (view, i, &page_area, &border);
3516
3517                 if (gdk_rectangle_point_in (&page_area, start))
3518                         point = start;
3519                 else
3520                         point = stop;
3521
3522                 if (i == first)
3523                         view_point_to_doc_point (view, point, &page_area,
3524                                                  &selection->rect.x1,
3525                                                  &selection->rect.y1);
3526
3527                 /* If the selection is contained within just one page,
3528                  * make sure we don't write 'start' into both points
3529                  * in selection->rect. */
3530                 if (first == last)
3531                         point = stop;
3532
3533                 if (i == last)
3534                         view_point_to_doc_point (view, point, &page_area,
3535                                                  &selection->rect.x2,
3536                                                  &selection->rect.y2);
3537
3538                 list = g_list_append (list, selection);
3539         }
3540
3541         return list;
3542 }
3543
3544 /* This function takes the newly calculated list, and figures out which regions
3545  * have changed.  It then queues a redraw approporiately.
3546  */
3547 static void
3548 merge_selection_region (EvView *view,
3549                         GList  *new_list)
3550 {
3551         GList *old_list;
3552         GList *new_list_ptr, *old_list_ptr;
3553
3554         /* Update the selection */
3555         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
3556         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3557         view->selection_info.selections = new_list;
3558         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
3559         g_object_notify (G_OBJECT (view), "has-selection");
3560
3561         new_list_ptr = new_list;
3562         old_list_ptr = old_list;
3563
3564         while (new_list_ptr || old_list_ptr) {
3565                 EvViewSelection *old_sel, *new_sel;
3566                 int cur_page;
3567                 GdkRegion *region = NULL;
3568
3569                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
3570                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
3571
3572                 /* Assume that the lists are in order, and we run through them
3573                  * comparing them, one page at a time.  We come out with the
3574                  * first page we see. */
3575                 if (new_sel && old_sel) {
3576                         if (new_sel->page < old_sel->page) {
3577                                 new_list_ptr = new_list_ptr->next;
3578                                 old_sel = NULL;
3579                         } else if (new_sel->page > old_sel->page) {
3580                                 old_list_ptr = old_list_ptr->next;
3581                                 new_sel = NULL;
3582                         } else {
3583                                 new_list_ptr = new_list_ptr->next;
3584                                 old_list_ptr = old_list_ptr->next;
3585                         }
3586                 } else if (new_sel) {
3587                         new_list_ptr = new_list_ptr->next;
3588                 } else if (old_sel) {
3589                         old_list_ptr = old_list_ptr->next;
3590                 }
3591
3592                 g_assert (new_sel || old_sel);
3593
3594                 /* is the page we're looking at on the screen?*/
3595                 cur_page = new_sel ? new_sel->page : old_sel->page;
3596                 if (cur_page < view->start_page || cur_page > view->end_page)
3597                         continue;
3598
3599                 /* seed the cache with a new page.  We are going to need the new
3600                  * region too. */
3601                 if (new_sel) {
3602                         GdkRegion *tmp_region = NULL;
3603                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
3604                                                               cur_page,
3605                                                               view->scale,
3606                                                               &tmp_region);
3607                         if (tmp_region) {
3608                                 new_sel->covered_region = gdk_region_copy (tmp_region);
3609                         }
3610                 }
3611
3612                 /* Now we figure out what needs redrawing */
3613                 if (old_sel && new_sel) {
3614                         if (old_sel->covered_region &&
3615                             new_sel->covered_region) {
3616                                 /* We only want to redraw the areas that have
3617                                  * changed, so we xor the old and new regions
3618                                  * and redraw if it's different */
3619                                 region = gdk_region_copy (old_sel->covered_region);
3620                                 gdk_region_xor (region, new_sel->covered_region);
3621                                 if (gdk_region_empty (region)) {
3622                                         gdk_region_destroy (region);
3623                                         region = NULL;
3624                                 }
3625                         } else if (old_sel->covered_region) {
3626                                 region = gdk_region_copy (old_sel->covered_region);
3627                         } else if (new_sel->covered_region) {
3628                                 region = gdk_region_copy (new_sel->covered_region);
3629                         }
3630                 } else if (old_sel && !new_sel) {
3631                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
3632                                 region = gdk_region_copy (old_sel->covered_region);
3633                         }
3634                 } else if (!old_sel && new_sel) {
3635                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
3636                                 region = gdk_region_copy (new_sel->covered_region);
3637                         }
3638                 } else {
3639                         g_assert_not_reached ();
3640                 }
3641
3642                 /* Redraw the damaged region! */
3643                 if (region) {
3644                         GdkRectangle page_area;
3645                         GtkBorder border;
3646
3647                         get_page_extents (view, cur_page, &page_area, &border);
3648                         gdk_region_offset (region,
3649                                            page_area.x + border.left - view->scroll_x,
3650                                            page_area.y + border.top - view->scroll_y);
3651                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
3652                         gdk_region_destroy (region);
3653                 }
3654         }
3655
3656         /* Free the old list, now that we're done with it. */
3657         g_list_foreach (old_list, (GFunc) selection_free, NULL);
3658 }
3659
3660 static void
3661 compute_selections (EvView   *view,
3662                     GdkPoint *start,
3663                     GdkPoint *stop)
3664 {
3665         GList *list;
3666
3667         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
3668                 list = compute_new_selection_rect (view, start, stop);
3669         else
3670                 list = compute_new_selection_text (view, start, stop);
3671         merge_selection_region (view, list);
3672 }
3673
3674 /* Free's the selection.  It's up to the caller to queue redraws if needed.
3675  */
3676 static void
3677 selection_free (EvViewSelection *selection)
3678 {
3679         if (selection->covered_region)
3680                 gdk_region_destroy (selection->covered_region);
3681         g_free (selection);
3682 }
3683
3684 static void
3685 clear_selection (EvView *view)
3686 {
3687         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3688         view->selection_info.selections = NULL;
3689         view->selection_info.in_selection = FALSE;
3690         g_object_notify (G_OBJECT (view), "has-selection");
3691 }
3692
3693
3694 void
3695 ev_view_select_all (EvView *view)
3696 {
3697         int n_pages, i;
3698
3699         /* Disable selection on rotated pages for the 0.4.0 series */
3700         if (view->rotation != 0)
3701                 return;
3702
3703         clear_selection (view);
3704
3705         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3706         for (i = 0; i < n_pages; i++) {
3707                 int width, height;
3708                 EvViewSelection *selection;
3709
3710                 ev_page_cache_get_size (view->page_cache,
3711                                         i,
3712                                         view->rotation,
3713                                         1.0, &width, &height);
3714
3715                 selection = g_new0 (EvViewSelection, 1);
3716                 selection->page = i;
3717                 selection->rect.x1 = selection->rect.y1 = 0;
3718                 selection->rect.x2 = width;
3719                 selection->rect.y2 = height;
3720
3721                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
3722         }
3723
3724         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
3725         g_object_notify (G_OBJECT (view), "has-selection");
3726         gtk_widget_queue_draw (GTK_WIDGET (view));
3727 }
3728
3729 gboolean
3730 ev_view_get_has_selection (EvView *view)
3731 {
3732         return view->selection_info.selections != NULL;
3733 }
3734
3735 static char *
3736 get_selected_text (EvView *ev_view)
3737 {
3738         GString *text;
3739         GList *l;
3740
3741         text = g_string_new (NULL);
3742
3743         ev_document_doc_mutex_lock ();
3744
3745         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
3746                 EvViewSelection *selection = (EvViewSelection *)l->data;
3747                 char *tmp;
3748
3749                 tmp = ev_document_get_text (ev_view->document,
3750                                             selection->page,
3751                                             &selection->rect);
3752                 g_string_append (text, tmp);
3753                 g_free (tmp);
3754         }
3755
3756         ev_document_doc_mutex_unlock ();
3757
3758         return g_string_free (text, FALSE);
3759 }
3760
3761 void
3762 ev_view_copy (EvView *ev_view)
3763 {
3764         GtkClipboard *clipboard;
3765         char *text;
3766
3767         if (!ev_document_can_get_text (ev_view->document)) {
3768                 return;
3769         }
3770
3771         text = get_selected_text (ev_view);
3772         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3773                                               GDK_SELECTION_CLIPBOARD);
3774         gtk_clipboard_set_text (clipboard, text, -1);
3775         g_free (text);
3776 }
3777
3778 static void
3779 ev_view_primary_get_cb (GtkClipboard     *clipboard,
3780                         GtkSelectionData *selection_data,
3781                         guint             info,
3782                         gpointer          data)
3783 {
3784         EvView *ev_view = EV_VIEW (data);
3785         char *text;
3786
3787         if (!ev_document_can_get_text (ev_view->document)) {
3788                 return;
3789         }
3790
3791         text = get_selected_text (ev_view);
3792         gtk_selection_data_set_text (selection_data, text, -1);
3793         g_free (text);
3794 }
3795
3796 static void
3797 ev_view_primary_clear_cb (GtkClipboard *clipboard,
3798                           gpointer      data)
3799 {
3800         EvView *view = EV_VIEW (data);
3801
3802         clear_selection (view);
3803 }
3804
3805 static void
3806 ev_view_update_primary_selection (EvView *ev_view)
3807 {
3808         GtkClipboard *clipboard;
3809
3810         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3811                                               GDK_SELECTION_PRIMARY);
3812
3813         if (ev_view->selection_info.selections) {
3814                 if (!gtk_clipboard_set_with_owner (clipboard,
3815                                                    targets,
3816                                                    G_N_ELEMENTS (targets),
3817                                                    ev_view_primary_get_cb,
3818                                                    ev_view_primary_clear_cb,
3819                                                    G_OBJECT (ev_view)))
3820                         ev_view_primary_clear_cb (clipboard, ev_view);
3821         } else {
3822                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
3823                         gtk_clipboard_clear (clipboard);
3824         }
3825 }
3826
3827 /*** Cursor operations ***/
3828
3829 static GdkCursor *
3830 ev_view_create_invisible_cursor(void)
3831 {
3832        GdkBitmap *empty;
3833        GdkColor black = { 0, 0, 0, 0 };
3834        static char bits[] = { 0x00 };
3835
3836        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
3837
3838        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
3839 }
3840
3841 static void
3842 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
3843 {
3844         GdkCursor *cursor = NULL;
3845         GdkDisplay *display;
3846         GtkWidget *widget;
3847
3848         if (view->cursor == new_cursor) {
3849                 return;
3850         }
3851
3852         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
3853         display = gtk_widget_get_display (widget);
3854         view->cursor = new_cursor;
3855
3856         switch (new_cursor) {
3857                 case EV_VIEW_CURSOR_NORMAL:
3858                         gdk_window_set_cursor (widget->window, NULL);
3859                         break;
3860                 case EV_VIEW_CURSOR_IBEAM:
3861                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
3862                         break;
3863                 case EV_VIEW_CURSOR_LINK:
3864                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
3865                         break;
3866                 case EV_VIEW_CURSOR_WAIT:
3867                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
3868                         break;
3869                 case EV_VIEW_CURSOR_HIDDEN:
3870                         cursor = ev_view_create_invisible_cursor ();
3871                         break;
3872                 case EV_VIEW_CURSOR_DRAG:
3873                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
3874                         break;
3875         }
3876
3877         if (cursor) {
3878                 gdk_window_set_cursor (widget->window, cursor);
3879                 gdk_cursor_unref (cursor);
3880                 gdk_flush();
3881         }
3882 }
3883
3884 void
3885 ev_view_hide_cursor (EvView *view)
3886 {
3887        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
3888 }
3889
3890 void
3891 ev_view_show_cursor (EvView *view)
3892 {
3893        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3894 }
3895
3896 gboolean
3897 ev_view_next_page (EvView *view)
3898 {
3899         int page;
3900
3901         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3902
3903         page = ev_page_cache_get_current_page (view->page_cache);
3904         page = ev_view_get_dual_page (view) ? page + 2 : page + 1;
3905
3906         if (page < ev_page_cache_get_n_pages (view->page_cache)) {
3907                 ev_page_cache_set_current_page (view->page_cache, page);
3908                 return TRUE;
3909         } else {
3910                 return FALSE;
3911         }
3912 }
3913
3914 gboolean
3915 ev_view_previous_page (EvView *view)
3916 {
3917         int page;
3918
3919         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3920
3921         page = ev_page_cache_get_current_page (view->page_cache);
3922         page = ev_view_get_dual_page (view) ? page - 2 : page - 1;
3923
3924         if (page >= 0) {
3925                 ev_page_cache_set_current_page (view->page_cache, page);
3926                 return TRUE;
3927         } else {
3928                 return FALSE;
3929         }
3930 }
3931
3932 /*** Enum description for usage in signal ***/
3933
3934 GType
3935 ev_sizing_mode_get_type (void)
3936 {
3937   static GType etype = 0;
3938   if (etype == 0) {
3939     static const GEnumValue values[] = {
3940       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
3941       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
3942       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
3943       { 0, NULL, NULL }
3944     };
3945     etype = g_enum_register_static ("EvSizingMode", values);
3946   }
3947   return etype;
3948 }