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 x, y, shift = 0;
1710         GtkWidget *widget = GTK_WIDGET (view);
1711
1712         gtk_widget_get_pointer (widget, &x, &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
1727         if (x > widget->allocation.width) {
1728                 shift = (x - widget->allocation.width) / 2;
1729         } else if (x < 0) {
1730                 shift = x / 2;
1731         }
1732
1733         if (shift)
1734                 gtk_adjustment_set_value (view->hadjustment,
1735                                           CLAMP (view->hadjustment->value + shift,
1736                                           view->hadjustment->lower,
1737                                           view->hadjustment->upper -
1738                                           view->hadjustment->page_size));
1739
1740         return TRUE;
1741 }
1742
1743 static gboolean
1744 ev_view_motion_notify_event (GtkWidget      *widget,
1745                              GdkEventMotion *event)
1746 {
1747         EvView *view = EV_VIEW (widget);
1748         gint x, y;
1749
1750         if (!view->document)
1751                 return FALSE;
1752
1753         if (event->is_hint || event->window != widget->window) {
1754             gtk_widget_get_pointer (widget, &x, &y);
1755         } else {
1756             x = event->x;
1757             y = event->y;
1758         }
1759
1760         if (view->selection_info.in_drag) {
1761                 if (gtk_drag_check_threshold (widget,
1762                                               view->selection_info.start.x,
1763                                               view->selection_info.start.y,
1764                                               x, y)) {
1765                         GdkDragContext *context;
1766                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
1767
1768                         gtk_target_list_add_text_targets (target_list, 0);
1769
1770                         context = gtk_drag_begin (widget, target_list,
1771                                                   GDK_ACTION_COPY,
1772                                                   1, (GdkEvent *)event);
1773
1774                         view->selection_info.in_drag = FALSE;
1775
1776                         gtk_target_list_unref (target_list);
1777
1778                         return TRUE;
1779                 }
1780         }
1781
1782         /* For the Evince 0.4.x release, we limit selection to un-rotated
1783          * documents only.
1784          */
1785         if (view->pressed_button == 1 && view->rotation == 0) {
1786
1787                 /* Schedule timeout to scroll during selection and additionally
1788                  * scroll once to allow arbitrary speed. */
1789                 if (!view->selection_scroll_id)
1790                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME, (GSourceFunc)selection_scroll_timeout_cb, view);
1791                 else
1792                     selection_scroll_timeout_cb (view);
1793
1794                 view->selection_info.in_selection = TRUE;
1795                 view->motion.x = x + view->scroll_x;
1796                 view->motion.y = y + view->scroll_y;
1797
1798                 /* Queue an idle to handle the motion.  We do this because
1799                  * handling any selection events in the motion could be slower
1800                  * than new motion events reach us.  We always put it in the
1801                  * idle to make sure we catch up and don't visibly lag the
1802                  * mouse. */
1803                 if (!view->selection_update_id)
1804                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
1805
1806                 return TRUE;
1807         } else if (view->pressed_button == 2) {
1808                 if (!view->drag_info.in_drag) {
1809                         gboolean start;
1810
1811                         start = gtk_drag_check_threshold (widget,
1812                                                           view->drag_info.start.x,
1813                                                           view->drag_info.start.y,
1814                                                           event->x_root,
1815                                                           event->y_root);
1816                         view->drag_info.in_drag = start;
1817                 }
1818
1819                 if (view->drag_info.in_drag) {
1820                         int dx, dy;
1821                         gdouble dhadj_value, dvadj_value;
1822
1823                         dx = event->x_root - view->drag_info.start.x;
1824                         dy = event->y_root - view->drag_info.start.y;
1825
1826                         dhadj_value = view->hadjustment->page_size *
1827                                       (gdouble)dx / widget->allocation.width;
1828                         dvadj_value = view->vadjustment->page_size *
1829                                       (gdouble)dy / widget->allocation.height;
1830
1831                         /* clamp scrolling to visible area */
1832                         gtk_adjustment_set_value (view->hadjustment,
1833                                                   MIN(view->drag_info.hadj - dhadj_value,
1834                                                       view->hadjustment->upper -
1835                                                       view->hadjustment->page_size));
1836                         gtk_adjustment_set_value (view->vadjustment,
1837                                                   MIN(view->drag_info.vadj - dvadj_value,
1838                                                       view->vadjustment->upper -
1839                                                       view->vadjustment->page_size));
1840
1841                         return TRUE;
1842                 }
1843         /* For the Evince 0.4.x release, we limit links to un-rotated documents
1844          * only.
1845          */
1846         } else if (view->pressed_button <= 0 &&
1847                    view->rotation == 0) {
1848                 handle_link_over_xy (view, x, y);
1849                 return TRUE;
1850         }
1851
1852         return FALSE;
1853 }
1854
1855 static gboolean
1856 ev_view_button_release_event (GtkWidget      *widget,
1857                               GdkEventButton *event)
1858 {
1859         EvView *view = EV_VIEW (widget);
1860         EvLink *link;
1861
1862         if (view->pressed_button == 2) {
1863                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1864         }
1865
1866         if (view->document) {
1867                 link = ev_view_get_link_at_location (view, event->x, event->y);
1868         } else {
1869                 link = NULL;
1870         }
1871
1872         view->pressed_button = -1;
1873         view->drag_info.in_drag = FALSE;
1874
1875         if (view->selection_scroll_id) {
1876             g_source_remove (view->selection_scroll_id);
1877             view->selection_scroll_id = 0;
1878         }
1879         if (view->selection_update_id) {
1880             g_source_remove (view->selection_update_id);
1881             view->selection_update_id = 0;
1882         }
1883
1884         if (view->selection_info.selections) {
1885                 ev_view_update_primary_selection (view);
1886
1887                 if (view->selection_info.in_drag) {
1888                         clear_selection (view);
1889                         gtk_widget_queue_draw (widget);
1890                 }
1891
1892                 view->selection_info.in_drag = FALSE;
1893         } else if (link) {
1894                 ev_view_goto_link (view, link);
1895         } else if (view->presentation) {
1896                 switch (event->button) {
1897                 case 1:
1898                         ev_view_next_page (view);
1899                         return TRUE;
1900                 case 3:
1901                         ev_view_previous_page (view);
1902                         return TRUE;
1903                 }
1904         }
1905
1906         return FALSE;
1907 }
1908
1909 static gint
1910 ev_view_focus_in (GtkWidget     *widget,
1911                   GdkEventFocus *event)
1912 {
1913         if (EV_VIEW (widget)->pixbuf_cache)
1914                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1915         gtk_widget_queue_draw (widget);
1916
1917         return FALSE;
1918 }
1919
1920 static gint
1921 ev_view_focus_out (GtkWidget     *widget,
1922                      GdkEventFocus *event)
1923 {
1924         if (EV_VIEW (widget)->pixbuf_cache)
1925                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1926         gtk_widget_queue_draw (widget);
1927
1928         return FALSE;
1929 }
1930
1931 static gboolean
1932 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
1933 {
1934         EvView *view = EV_VIEW (widget);
1935
1936         ev_view_set_status (view, NULL);
1937
1938         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1939             view->cursor == EV_VIEW_CURSOR_IBEAM)
1940                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1941
1942         if (view->link_tooltip) {
1943                 view->hovered_link = NULL;
1944                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1945         }
1946
1947         return FALSE;
1948 }
1949
1950 static gboolean
1951 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
1952 {
1953         EvView *view = EV_VIEW (widget);
1954
1955         handle_link_over_xy (view, event->x, event->y);
1956
1957         return FALSE;
1958 }
1959
1960 static void
1961 ev_view_style_set (GtkWidget *widget,
1962                    GtkStyle  *old_style)
1963 {
1964         if (EV_VIEW (widget)->pixbuf_cache)
1965                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1966
1967         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
1968 }
1969
1970 /*** Drawing ***/
1971
1972 static guint32
1973 ev_gdk_color_to_rgb (const GdkColor *color)
1974 {
1975   guint32 result;
1976   result = (0xff0000 | (color->red & 0xff00));
1977   result <<= 8;
1978   result |= ((color->green & 0xff00) | (color->blue >> 8));
1979   return result;
1980 }
1981
1982 static void
1983 draw_rubberband (GtkWidget *widget, GdkWindow *window,
1984                  const GdkRectangle *rect, guchar alpha)
1985 {
1986         GdkGC *gc;
1987         GdkPixbuf *pixbuf;
1988         GdkColor *fill_color_gdk;
1989         guint fill_color;
1990
1991         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
1992         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
1993
1994         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
1995                                  rect->width, rect->height);
1996         gdk_pixbuf_fill (pixbuf, fill_color);
1997
1998         gdk_draw_pixbuf (window, NULL, pixbuf,
1999                          0, 0,
2000                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2001                          rect->width, rect->height,
2002                          GDK_RGB_DITHER_NONE,
2003                          0, 0);
2004
2005         g_object_unref (pixbuf);
2006
2007         gc = gdk_gc_new (window);
2008         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
2009         gdk_draw_rectangle (window, gc, FALSE,
2010                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
2011                             rect->width - 1,
2012                             rect->height - 1);
2013         g_object_unref (gc);
2014
2015         gdk_color_free (fill_color_gdk);
2016 }
2017
2018
2019 static void
2020 highlight_find_results (EvView *view, int page)
2021 {
2022         EvDocumentFind *find;
2023         int i, results = 0;
2024
2025         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
2026
2027         find = EV_DOCUMENT_FIND (view->document);
2028
2029         results = ev_document_find_get_n_results (find, page);
2030
2031         for (i = 0; i < results; i++) {
2032                 EvRectangle rectangle;
2033                 GdkRectangle view_rectangle;
2034                 guchar alpha;
2035
2036                 if (i == view->find_result && page == view->find_page) {
2037                         alpha = 0x90;
2038                 } else {
2039                         alpha = 0x20;
2040                 }
2041
2042                 ev_document_find_get_result (find, page, i, &rectangle);
2043                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
2044                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
2045                                  &view_rectangle, alpha);
2046         }
2047 }
2048
2049 static void
2050 draw_loading_text (EvView       *view,
2051                    GdkRectangle *page_area,
2052                    GdkRectangle *expose_area)
2053 {
2054         PangoLayout *layout;
2055         PangoFontDescription *font_desc;
2056         PangoRectangle logical_rect;
2057         double real_scale;
2058         int target_width;
2059
2060         const char *loading_text = _("Loading...");
2061
2062         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
2063
2064         font_desc = pango_font_description_new ();
2065
2066
2067         /* We set the font to be 10 points, get the size, and scale appropriately */
2068         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2069         pango_layout_set_font_description (layout, font_desc);
2070         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2071
2072         /* Make sure we fit the middle of the page */
2073         target_width = MAX (page_area->width / 2, 1);
2074         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2075         pango_font_description_set_size (font_desc, (int)real_scale);
2076         pango_layout_set_font_description (layout, font_desc);
2077         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2078
2079         gtk_paint_layout (GTK_WIDGET (view)->style,
2080                           GTK_WIDGET (view)->window,
2081                           GTK_WIDGET_STATE (view),
2082                           FALSE,
2083                           page_area,
2084                           GTK_WIDGET (view),
2085                           NULL,
2086                           page_area->x + (target_width/2),
2087                           page_area->y + (page_area->height - logical_rect.height) / 2,
2088                           layout);
2089
2090         pango_font_description_free (font_desc);
2091         g_object_unref (layout);
2092 }
2093
2094 static void
2095 draw_one_page (EvView          *view,
2096                gint             page,
2097                GdkRectangle    *page_area,
2098                GtkBorder       *border,
2099                GdkRectangle    *expose_area)
2100 {
2101         gint width, height;
2102         GdkPixbuf *current_pixbuf;
2103         GdkRectangle overlap;
2104         GdkRectangle real_page_area;
2105         EvViewSelection *selection;
2106
2107         g_assert (view->document);
2108         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2109                 return;
2110
2111         selection = find_selection_for_page (view, page);
2112         ev_page_cache_get_size (view->page_cache,
2113                                 page, view->rotation,
2114                                 view->scale,
2115                                 &width, &height);
2116         /* Render the document itself */
2117         real_page_area = *page_area;
2118
2119         real_page_area.x += border->left;
2120         real_page_area.y += border->top;
2121         real_page_area.width -= (border->left + border->right);
2122         real_page_area.height -= (border->top + border->bottom);
2123
2124         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2125                                          GTK_WIDGET (view),
2126                                          page_area, border);
2127
2128         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2129                 GdkPixbuf *selection_pixbuf = NULL;
2130                 GdkPixbuf *scaled_image;
2131                 GdkPixbuf *scaled_selection;
2132
2133                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2134
2135                 /* Get the selection pixbuf iff we have something to draw */
2136                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2137                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2138                                                                                  page,
2139                                                                                  view->scale,
2140                                                                                  NULL);
2141
2142                 if (current_pixbuf == NULL)
2143                         scaled_image = NULL;
2144                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2145                          height == gdk_pixbuf_get_height (current_pixbuf))
2146                         scaled_image = g_object_ref (current_pixbuf);
2147                 else
2148                         /* FIXME: We don't want to scale the whole area, just the right
2149                          * area of it */
2150                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2151                                                                 width, height,
2152                                                                 GDK_INTERP_NEAREST);
2153
2154                 if (selection_pixbuf == NULL)
2155                         scaled_selection = NULL;
2156                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2157                          height == gdk_pixbuf_get_height (selection_pixbuf))
2158                         scaled_selection = g_object_ref (selection_pixbuf);
2159                 else
2160                         /* FIXME: We don't want to scale the whole area, just the right
2161                          * area of it */
2162                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2163                                                                     width, height,
2164                                                                     GDK_INTERP_NEAREST);
2165
2166                 if (scaled_image) {
2167                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2168                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2169                                          scaled_image,
2170                                          overlap.x - real_page_area.x,
2171                                          overlap.y - real_page_area.y,
2172                                          overlap.x, overlap.y,
2173                                          overlap.width, overlap.height,
2174                                          GDK_RGB_DITHER_NORMAL,
2175                                          0, 0);
2176                         g_object_unref (scaled_image);
2177                 } else {
2178                         draw_loading_text (view,
2179                                            &real_page_area,
2180                                            expose_area);
2181                 }
2182
2183                 if (scaled_selection) {
2184                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2185                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2186                                          scaled_selection,
2187                                          overlap.x - real_page_area.x,
2188                                          overlap.y - real_page_area.y,
2189                                          overlap.x, overlap.y,
2190                                          overlap.width, overlap.height,
2191                                          GDK_RGB_DITHER_NORMAL,
2192                                          0, 0);
2193                         g_object_unref (scaled_selection);
2194                 }
2195         }
2196 }
2197
2198 /*** GObject functions ***/
2199
2200 static void
2201 ev_view_finalize (GObject *object)
2202 {
2203         EvView *view = EV_VIEW (object);
2204
2205         LOG ("Finalize");
2206
2207         g_free (view->status);
2208         g_free (view->find_status);
2209
2210         clear_selection (view);
2211
2212         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2213 }
2214
2215 static void
2216 ev_view_destroy (GtkObject *object)
2217 {
2218         EvView *view = EV_VIEW (object);
2219
2220         if (view->document) {
2221                 g_object_unref (view->document);
2222                 view->document = NULL;
2223         }
2224
2225         if (view->pixbuf_cache) {
2226                 g_object_unref (view->pixbuf_cache);
2227                 view->pixbuf_cache = NULL;
2228         }
2229
2230         if (view->link_tooltip) {
2231                 gtk_widget_destroy (view->link_tooltip);
2232         }
2233
2234         if (view->selection_scroll_id) {
2235             g_source_remove (view->selection_scroll_id);
2236             view->selection_scroll_id = 0;
2237         }
2238
2239         if (view->selection_update_id) {
2240             g_source_remove (view->selection_update_id);
2241             view->selection_update_id = 0;
2242         }
2243
2244         ev_view_set_scroll_adjustments (view, NULL, NULL);
2245
2246         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
2247 }
2248
2249 static void
2250 ev_view_set_property (GObject      *object,
2251                       guint         prop_id,
2252                       const GValue *value,
2253                       GParamSpec   *pspec)
2254 {
2255         EvView *view = EV_VIEW (object);
2256
2257         switch (prop_id)
2258         {
2259         case PROP_CONTINUOUS:
2260                 ev_view_set_continuous (view, g_value_get_boolean (value));
2261                 break;
2262         case PROP_DUAL_PAGE:
2263                 ev_view_set_dual_page (view, g_value_get_boolean (value));
2264                 break;
2265         case PROP_FULLSCREEN:
2266                 ev_view_set_fullscreen (view, g_value_get_boolean (value));
2267                 break;
2268         case PROP_PRESENTATION:
2269                 ev_view_set_presentation (view, g_value_get_boolean (value));
2270                 break;
2271         case PROP_SIZING_MODE:
2272                 ev_view_set_sizing_mode (view, g_value_get_enum (value));
2273                 break;
2274         case PROP_ZOOM:
2275                 ev_view_set_zoom (view, g_value_get_double (value), FALSE);
2276                 break;
2277         case PROP_ROTATION:
2278                 ev_view_set_rotation (view, g_value_get_int (value));
2279                 break;
2280         default:
2281                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2282         }
2283 }
2284
2285 static AtkObject *
2286 ev_view_get_accessible (GtkWidget *widget)
2287 {
2288         static gboolean first_time = TRUE;
2289
2290         if (first_time) {
2291                 AtkObjectFactory *factory;
2292                 AtkRegistry *registry;
2293                 GType derived_type;
2294                 GType derived_atk_type;
2295
2296                 /*
2297                  * Figure out whether accessibility is enabled by looking at the
2298                  * type of the accessible object which would be created for
2299                  * the parent type of EvView.
2300                  */
2301                 derived_type = g_type_parent (EV_TYPE_VIEW);
2302
2303                 registry = atk_get_default_registry ();
2304                 factory = atk_registry_get_factory (registry,
2305                                                     derived_type);
2306                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
2307                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
2308                         atk_registry_set_factory_type (registry,
2309                                                        EV_TYPE_VIEW,
2310                                                        ev_view_accessible_factory_get_type ());
2311                 first_time = FALSE;
2312         }
2313         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
2314 }
2315
2316 static void
2317 ev_view_get_property (GObject *object,
2318                       guint prop_id,
2319                       GValue *value,
2320                       GParamSpec *pspec)
2321 {
2322         EvView *view = EV_VIEW (object);
2323
2324         switch (prop_id)
2325         {
2326         case PROP_STATUS:
2327                 g_value_set_string (value, view->status);
2328                 break;
2329         case PROP_FIND_STATUS:
2330                 g_value_set_string (value, view->status);
2331                 break;
2332         case PROP_CONTINUOUS:
2333                 g_value_set_boolean (value, view->continuous);
2334                 break;
2335         case PROP_DUAL_PAGE:
2336                 g_value_set_boolean (value, view->dual_page);
2337                 break;
2338         case PROP_FULLSCREEN:
2339                 g_value_set_boolean (value, view->fullscreen);
2340                 break;
2341         case PROP_PRESENTATION:
2342                 g_value_set_boolean (value, view->presentation);
2343                 break;
2344         case PROP_SIZING_MODE:
2345                 g_value_set_enum (value, view->sizing_mode);
2346                 break;
2347         case PROP_ZOOM:
2348                 g_value_set_double (value, view->scale);
2349                 break;
2350         case PROP_ROTATION:
2351                 g_value_set_int (value, view->rotation);
2352                 break;
2353         case PROP_HAS_SELECTION:
2354                 g_value_set_boolean (value,
2355                                      view->selection_info.selections != NULL);
2356                 break;
2357         default:
2358                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2359         }
2360 }
2361
2362 static void
2363 ev_view_class_init (EvViewClass *class)
2364 {
2365         GObjectClass *object_class = G_OBJECT_CLASS (class);
2366         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
2367         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
2368         GtkBindingSet *binding_set;
2369
2370         object_class->finalize = ev_view_finalize;
2371         object_class->set_property = ev_view_set_property;
2372         object_class->get_property = ev_view_get_property;
2373
2374         widget_class->expose_event = ev_view_expose_event;
2375         widget_class->button_press_event = ev_view_button_press_event;
2376         widget_class->motion_notify_event = ev_view_motion_notify_event;
2377         widget_class->button_release_event = ev_view_button_release_event;
2378         widget_class->focus_in_event = ev_view_focus_in;
2379         widget_class->focus_out_event = ev_view_focus_out;
2380         widget_class->get_accessible = ev_view_get_accessible;
2381         widget_class->size_request = ev_view_size_request;
2382         widget_class->size_allocate = ev_view_size_allocate;
2383         widget_class->realize = ev_view_realize;
2384         widget_class->scroll_event = ev_view_scroll_event;
2385         widget_class->enter_notify_event = ev_view_enter_notify_event;
2386         widget_class->leave_notify_event = ev_view_leave_notify_event;
2387         widget_class->style_set = ev_view_style_set;
2388         widget_class->drag_data_get = ev_view_drag_data_get;
2389         gtk_object_class->destroy = ev_view_destroy;
2390
2391         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
2392         class->binding_activated = ev_view_binding_activated;
2393
2394         widget_class->set_scroll_adjustments_signal =
2395             g_signal_new ("set-scroll-adjustments",
2396                           G_OBJECT_CLASS_TYPE (object_class),
2397                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2398                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
2399                           NULL, NULL,
2400                           ev_marshal_VOID__OBJECT_OBJECT,
2401                           G_TYPE_NONE, 2,
2402                           GTK_TYPE_ADJUSTMENT,
2403                           GTK_TYPE_ADJUSTMENT);
2404
2405         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
2406                          G_TYPE_FROM_CLASS (object_class),
2407                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2408                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
2409                          NULL, NULL,
2410                          ev_marshal_VOID__ENUM_BOOLEAN,
2411                          G_TYPE_NONE, 2,
2412                          GTK_TYPE_SCROLL_TYPE,
2413                          G_TYPE_BOOLEAN);
2414
2415         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
2416                          G_TYPE_FROM_CLASS (object_class),
2417                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2418                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
2419                          NULL, NULL,
2420                          ev_marshal_VOID__VOID,
2421                          G_TYPE_NONE, 0, G_TYPE_NONE);
2422         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
2423                          G_TYPE_FROM_CLASS (object_class),
2424                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2425                          G_STRUCT_OFFSET (EvViewClass, external_link),
2426                          NULL, NULL,
2427                          g_cclosure_marshal_VOID__OBJECT,
2428                          G_TYPE_NONE, 1,
2429                          G_TYPE_OBJECT);
2430         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
2431                          G_TYPE_FROM_CLASS (object_class),
2432                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2433                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
2434                          NULL, NULL,
2435                          g_cclosure_marshal_VOID__OBJECT,
2436                          G_TYPE_NONE, 1,
2437                          G_TYPE_OBJECT);
2438
2439         g_object_class_install_property (object_class,
2440                                          PROP_STATUS,
2441                                          g_param_spec_string ("status",
2442                                                               "Status Message",
2443                                                               "The status message",
2444                                                               NULL,
2445                                                               G_PARAM_READABLE));
2446
2447         g_object_class_install_property (object_class,
2448                                          PROP_FIND_STATUS,
2449                                          g_param_spec_string ("find-status",
2450                                                               "Find Status Message",
2451                                                               "The find status message",
2452                                                               NULL,
2453                                                               G_PARAM_READABLE));
2454
2455         g_object_class_install_property (object_class,
2456                                          PROP_CONTINUOUS,
2457                                          g_param_spec_boolean ("continuous",
2458                                                                "Continuous",
2459                                                                "Continuous scrolling mode",
2460                                                                TRUE,
2461                                                                G_PARAM_READWRITE));
2462
2463         g_object_class_install_property (object_class,
2464                                          PROP_DUAL_PAGE,
2465                                          g_param_spec_boolean ("dual-page",
2466                                                                "Dual Page",
2467                                                                "Two pages visible at once",
2468                                                                FALSE,
2469                                                                G_PARAM_READWRITE));
2470         g_object_class_install_property (object_class,
2471                                          PROP_FULLSCREEN,
2472                                          g_param_spec_boolean ("fullscreen",
2473                                                                "Full Screen",
2474                                                                "Draw page in a fullscreen fashion",
2475                                                                FALSE,
2476                                                                G_PARAM_READWRITE));
2477         g_object_class_install_property (object_class,
2478                                          PROP_PRESENTATION,
2479                                          g_param_spec_boolean ("presentation",
2480                                                                "Presentation",
2481                                                                "Draw page in presentation mode",
2482                                                                TRUE,
2483                                                                G_PARAM_READWRITE));
2484
2485         g_object_class_install_property (object_class,
2486                                          PROP_SIZING_MODE,
2487                                          g_param_spec_enum ("sizing-mode",
2488                                                             "Sizing Mode",
2489                                                             "Sizing Mode",
2490                                                             EV_TYPE_SIZING_MODE,
2491                                                             EV_SIZING_FIT_WIDTH,
2492                                                             G_PARAM_READWRITE));
2493
2494         g_object_class_install_property (object_class,
2495                                          PROP_ZOOM,
2496                                          g_param_spec_double ("zoom",
2497                                                               "Zoom factor",
2498                                                                "Zoom factor",
2499                                                                MIN_SCALE,
2500                                                                MAX_SCALE,
2501                                                                1.0,
2502                                                                G_PARAM_READWRITE));
2503         g_object_class_install_property (object_class,
2504                                          PROP_ROTATION,
2505                                          g_param_spec_double ("rotation",
2506                                                               "Rotation",
2507                                                                "Rotation",
2508                                                                0,
2509                                                                360,
2510                                                                0,
2511                                                                G_PARAM_READWRITE));
2512         g_object_class_install_property (object_class,
2513                                          PROP_HAS_SELECTION,
2514                                          g_param_spec_boolean ("has-selection",
2515                                                                "Has selection",
2516                                                                "The view has selections",
2517                                                                FALSE,
2518                                                                G_PARAM_READABLE));
2519
2520         binding_set = gtk_binding_set_by_class (class);
2521
2522         add_scroll_binding_keypad (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
2523         add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
2524         add_scroll_binding_keypad (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
2525         add_scroll_binding_keypad (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
2526 }
2527
2528 static void
2529 ev_view_init (EvView *view)
2530 {
2531         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
2532
2533         view->spacing = 5;
2534         view->scale = 1.0;
2535         view->current_page = 0;
2536         view->pressed_button = -1;
2537         view->cursor = EV_VIEW_CURSOR_NORMAL;
2538         view->drag_info.in_drag = FALSE;
2539         view->selection_info.selections = NULL;
2540         view->selection_info.in_selection = FALSE;
2541         view->selection_info.in_drag = FALSE;
2542         view->selection_mode = EV_VIEW_SELECTION_TEXT;
2543         view->continuous = TRUE;
2544         view->dual_page = FALSE;
2545         view->presentation = FALSE;
2546         view->fullscreen = FALSE;
2547         view->sizing_mode = EV_SIZING_FIT_WIDTH;
2548         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2549 }
2550
2551 /*** Callbacks ***/
2552
2553 static void
2554 find_changed_cb (EvDocument *document, int page, EvView *view)
2555 {
2556         jump_to_find_page (view, EV_VIEW_FIND_NEXT);
2557         jump_to_find_result (view);
2558         update_find_status_message (view);
2559
2560         if (view->current_page == page)
2561                 gtk_widget_queue_draw (GTK_WIDGET (view));
2562 }
2563
2564 static void
2565 job_finished_cb (EvPixbufCache *pixbuf_cache,
2566                  EvView        *view)
2567 {
2568         gtk_widget_queue_draw (GTK_WIDGET (view));
2569 }
2570
2571 static void
2572 page_changed_cb (EvPageCache *page_cache,
2573                  int          new_page,
2574                  EvView      *view)
2575 {
2576         if (view->current_page != new_page) {
2577
2578                 view->current_page = new_page;
2579                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2580                 gtk_widget_queue_resize (GTK_WIDGET (view));
2581
2582                 if (EV_IS_DOCUMENT_FIND (view->document)) {
2583                         view->find_page = new_page;
2584                         view->find_result = 0;
2585                         update_find_status_message (view);
2586                 }
2587         }
2588 }
2589
2590 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
2591                                          EvView *view)
2592 {
2593         int dx = 0, dy = 0;
2594
2595         if (! GTK_WIDGET_REALIZED (view))
2596                 return;
2597
2598         if (view->hadjustment) {
2599                 dx = view->scroll_x - (int) view->hadjustment->value;
2600                 view->scroll_x = (int) view->hadjustment->value;
2601         } else {
2602                 view->scroll_x = 0;
2603         }
2604
2605         if (view->vadjustment) {
2606                 dy = view->scroll_y - (int) view->vadjustment->value;
2607                 view->scroll_y = (int) view->vadjustment->value;
2608         } else {
2609                 view->scroll_y = 0;
2610         }
2611
2612
2613         if (view->pending_resize)
2614                 gtk_widget_queue_draw (GTK_WIDGET (view));
2615         else
2616                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
2617
2618
2619         if (view->document)
2620                 view_update_range_and_current_page (view);
2621 }
2622
2623 GtkWidget*
2624 ev_view_new (void)
2625 {
2626         GtkWidget *view;
2627
2628         view = g_object_new (EV_TYPE_VIEW, NULL);
2629
2630         return view;
2631 }
2632
2633 static void
2634 setup_caches (EvView *view)
2635 {
2636         view->page_cache = ev_page_cache_get (view->document);
2637         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
2638         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
2639         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
2640 }
2641
2642 static void
2643 clear_caches (EvView *view)
2644 {
2645         if (view->pixbuf_cache) {
2646                 g_object_unref (view->pixbuf_cache);
2647                 view->pixbuf_cache = NULL;
2648         }
2649
2650         if (view->page_cache) {
2651                 view->page_cache = NULL;
2652         }
2653 }
2654
2655 void
2656 ev_view_set_document (EvView     *view,
2657                       EvDocument *document)
2658 {
2659         g_return_if_fail (EV_IS_VIEW (view));
2660
2661         if (document != view->document) {
2662                 clear_caches (view);
2663
2664                 if (view->document) {
2665                         g_signal_handlers_disconnect_by_func (view->document,
2666                                                               find_changed_cb,
2667                                                               view);
2668                         g_object_unref (view->document);
2669                         view->page_cache = NULL;
2670
2671                 }
2672
2673                 view->document = document;
2674                 view->find_page = 0;
2675                 view->find_result = 0;
2676
2677                 if (view->document) {
2678                         g_object_ref (view->document);
2679                         if (EV_IS_DOCUMENT_FIND (view->document)) {
2680                                 g_signal_connect (view->document,
2681                                                   "find_changed",
2682                                                   G_CALLBACK (find_changed_cb),
2683                                                   view);
2684                         }
2685
2686                         setup_caches (view);
2687                 }
2688
2689                 gtk_widget_queue_resize (GTK_WIDGET (view));
2690         }
2691 }
2692
2693 /*** Zoom and sizing mode ***/
2694
2695 #define EPSILON 0.0000001
2696 void
2697 ev_view_set_zoom (EvView   *view,
2698                   double    factor,
2699                   gboolean  relative)
2700 {
2701         double scale;
2702
2703         if (relative)
2704                 scale = view->scale * factor;
2705         else
2706                 scale = factor;
2707
2708         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
2709
2710         if (ABS (view->scale - scale) < EPSILON)
2711                 return;
2712
2713         view->scale = scale;
2714         view->pending_resize = TRUE;
2715
2716         gtk_widget_queue_resize (GTK_WIDGET (view));
2717
2718         g_object_notify (G_OBJECT (view), "zoom");
2719 }
2720
2721 double
2722 ev_view_get_zoom (EvView *view)
2723 {
2724         return view->scale;
2725 }
2726
2727 gboolean
2728 ev_view_get_continuous (EvView *view)
2729 {
2730         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2731
2732         return view->continuous;
2733 }
2734
2735 void
2736 ev_view_set_continuous (EvView   *view,
2737                         gboolean  continuous)
2738 {
2739         g_return_if_fail (EV_IS_VIEW (view));
2740
2741         continuous = continuous != FALSE;
2742
2743         if (view->continuous != continuous) {
2744                 view->continuous = continuous;
2745                 view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2746                 gtk_widget_queue_resize (GTK_WIDGET (view));
2747         }
2748
2749         g_object_notify (G_OBJECT (view), "continuous");
2750 }
2751
2752 gboolean
2753 ev_view_get_dual_page (EvView *view)
2754 {
2755         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2756
2757         return view->dual_page;
2758 }
2759
2760 void
2761 ev_view_set_dual_page (EvView   *view,
2762                        gboolean  dual_page)
2763 {
2764         g_return_if_fail (EV_IS_VIEW (view));
2765
2766         dual_page = dual_page != FALSE;
2767
2768         if (view->dual_page == dual_page)
2769                 return;
2770
2771         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2772         view->dual_page = dual_page;
2773         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
2774          * preload_cache_size to be 2 if dual_page is set.
2775          */
2776         gtk_widget_queue_resize (GTK_WIDGET (view));
2777
2778         g_object_notify (G_OBJECT (view), "dual-page");
2779 }
2780
2781 void
2782 ev_view_set_fullscreen (EvView   *view,
2783                          gboolean  fullscreen)
2784 {
2785         g_return_if_fail (EV_IS_VIEW (view));
2786
2787         fullscreen = fullscreen != FALSE;
2788
2789         if (view->fullscreen == fullscreen)
2790                 return;
2791
2792         view->fullscreen = fullscreen;
2793         gtk_widget_queue_resize (GTK_WIDGET (view));
2794
2795         g_object_notify (G_OBJECT (view), "fullscreen");
2796 }
2797
2798 gboolean
2799 ev_view_get_fullscreen (EvView *view)
2800 {
2801         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2802
2803         return view->fullscreen;
2804 }
2805
2806 void
2807 ev_view_set_presentation (EvView   *view,
2808                           gboolean  presentation)
2809 {
2810         g_return_if_fail (EV_IS_VIEW (view));
2811
2812         presentation = presentation != FALSE;
2813
2814         if (view->presentation == presentation)
2815                 return;
2816
2817         view->presentation = presentation;
2818         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
2819         gtk_widget_queue_resize (GTK_WIDGET (view));
2820
2821         if (GTK_WIDGET_REALIZED (view)) {
2822                 if (view->presentation)
2823                         gdk_window_set_background (GTK_WIDGET(view)->window,
2824                                                    &GTK_WIDGET (view)->style->black);
2825                 else
2826                         gdk_window_set_background (GTK_WIDGET(view)->window,
2827                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
2828         }
2829
2830
2831         g_object_notify (G_OBJECT (view), "presentation");
2832 }
2833
2834 gboolean
2835 ev_view_get_presentation (EvView *view)
2836 {
2837         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2838
2839         return view->presentation;
2840 }
2841
2842 void
2843 ev_view_set_sizing_mode (EvView       *view,
2844                          EvSizingMode  sizing_mode)
2845 {
2846         g_return_if_fail (EV_IS_VIEW (view));
2847
2848         if (view->sizing_mode == sizing_mode)
2849                 return;
2850
2851         view->sizing_mode = sizing_mode;
2852         gtk_widget_queue_resize (GTK_WIDGET (view));
2853
2854         g_object_notify (G_OBJECT (view), "sizing-mode");
2855 }
2856
2857 EvSizingMode
2858 ev_view_get_sizing_mode (EvView *view)
2859 {
2860         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
2861
2862         return view->sizing_mode;
2863 }
2864
2865 gboolean
2866 ev_view_can_zoom_in (EvView *view)
2867 {
2868         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
2869 }
2870
2871 gboolean
2872 ev_view_can_zoom_out (EvView *view)
2873 {
2874         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
2875 }
2876
2877 void
2878 ev_view_zoom_in (EvView *view)
2879 {
2880         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2881
2882         view->pending_scroll = SCROLL_TO_CENTER;
2883         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
2884 }
2885
2886 void
2887 ev_view_zoom_out (EvView *view)
2888 {
2889         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2890
2891         view->pending_scroll = SCROLL_TO_CENTER;
2892         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
2893 }
2894
2895 void
2896 ev_view_rotate_right (EvView *view)
2897 {
2898         int rotation = view->rotation + 90;
2899
2900         if (rotation >= 360) {
2901                 rotation -= 360;
2902         }
2903
2904         ev_view_set_rotation (view, rotation);
2905 }
2906
2907 void
2908 ev_view_rotate_left (EvView *view)
2909 {
2910         int rotation = view->rotation - 90;
2911
2912         if (rotation < 0) {
2913                 rotation += 360;
2914         }
2915
2916         ev_view_set_rotation (view, rotation);
2917 }
2918
2919 void
2920 ev_view_set_rotation (EvView *view, int rotation)
2921 {
2922         view->rotation = rotation;
2923
2924         if (view->pixbuf_cache) {
2925                 ev_pixbuf_cache_clear (view->pixbuf_cache);
2926                 gtk_widget_queue_resize (GTK_WIDGET (view));
2927         }
2928
2929         if (rotation != 0)
2930                 clear_selection (view);
2931
2932         g_object_notify (G_OBJECT (view), "rotation");
2933 }
2934
2935 int
2936 ev_view_get_rotation (EvView *view)
2937 {
2938         return view->rotation;
2939 }
2940
2941 static double
2942 zoom_for_size_fit_width (int doc_width,
2943                          int doc_height,
2944                          int target_width,
2945                          int target_height,
2946                          int vsb_width)
2947 {
2948         double scale;
2949
2950         scale = (double)target_width / doc_width;
2951
2952         if (doc_height * scale > target_height)
2953                 scale = (double) (target_width - vsb_width) / doc_width;
2954
2955         return scale;
2956 }
2957
2958 static double
2959 zoom_for_size_fit_height (int doc_width,
2960                           int doc_height,
2961                           int target_width,
2962                           int target_height,
2963                           int vsb_height)
2964 {
2965         double scale;
2966
2967         scale = (double)target_height / doc_height;
2968
2969         if (doc_width * scale > target_width)
2970                 scale = (double) (target_height - vsb_height) / doc_height;
2971
2972         return scale;
2973 }
2974
2975 static double
2976 zoom_for_size_best_fit (int doc_width,
2977                         int doc_height,
2978                         int target_width,
2979                         int target_height,
2980                         int vsb_width,
2981                         int hsb_width)
2982 {
2983         double w_scale;
2984         double h_scale;
2985
2986         w_scale = (double)target_width / doc_width;
2987         h_scale = (double)target_height / doc_height;
2988
2989         if (doc_height * w_scale > target_height)
2990                 w_scale = (double) (target_width - vsb_width) / doc_width;
2991         if (doc_width * h_scale > target_width)
2992                 h_scale = (double) (target_height - hsb_width) / doc_height;
2993
2994         return MIN (w_scale, h_scale);
2995 }
2996
2997
2998 static void
2999 ev_view_zoom_for_size_presentation (EvView *view,
3000                                     int     width,
3001                                     int     height)
3002 {
3003         int doc_width, doc_height;
3004         gdouble scale;
3005
3006         ev_page_cache_get_size (view->page_cache,
3007                                 view->current_page,
3008                                 view->rotation,
3009                                 1.0,
3010                                 &doc_width,
3011                                 &doc_height);
3012         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
3013         ev_view_set_zoom (view, scale, FALSE);
3014 }
3015
3016 static void
3017 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
3018                            int     width,
3019                            int     height,
3020                            int     vsb_width,
3021                            int     hsb_height)
3022 {
3023         int doc_width, doc_height;
3024         GtkBorder border;
3025         gdouble scale;
3026
3027         ev_page_cache_get_max_width (view->page_cache,
3028                                      view->rotation,
3029                                      1.0,
3030                                      &doc_width);
3031         ev_page_cache_get_max_height (view->page_cache,
3032                                       view->rotation,
3033                                       1.0,
3034                                       &doc_height);
3035         compute_border (view, doc_width, doc_height, &border);
3036
3037         doc_width = doc_width * 2;
3038         width -= (2 * (border.left + border.right) + 3 * view->spacing);
3039         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3040
3041         /* FIXME: We really need to calculate the overall height here, not the
3042          * page height.  We assume there's always a vertical scrollbar for
3043          * now.  We need to fix this. */
3044         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3045                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3046         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3047                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3048         else
3049                 g_assert_not_reached ();
3050
3051         ev_view_set_zoom (view, scale, FALSE);
3052 }
3053
3054 static void
3055 ev_view_zoom_for_size_continuous (EvView *view,
3056                                   int     width,
3057                                   int     height,
3058                                   int     vsb_width,
3059                                   int     hsb_height)
3060 {
3061         int doc_width, doc_height;
3062         GtkBorder border;
3063         gdouble scale;
3064
3065         ev_page_cache_get_max_width (view->page_cache,
3066                                      view->rotation,
3067                                      1.0,
3068                                      &doc_width);
3069         ev_page_cache_get_max_height (view->page_cache,
3070                                       view->rotation,
3071                                       1.0,
3072                                       &doc_height);
3073         compute_border (view, doc_width, doc_height, &border);
3074
3075         width -= (border.left + border.right + 2 * view->spacing);
3076         height -= (border.top + border.bottom + 2 * view->spacing - 1);
3077
3078         /* FIXME: We really need to calculate the overall height here, not the
3079          * page height.  We assume there's always a vertical scrollbar for
3080          * now.  We need to fix this. */
3081         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3082                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
3083         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3084                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
3085         else
3086                 g_assert_not_reached ();
3087
3088         ev_view_set_zoom (view, scale, FALSE);
3089 }
3090
3091 static void
3092 ev_view_zoom_for_size_dual_page (EvView *view,
3093                                  int     width,
3094                                  int     height,
3095                                  int     vsb_width,
3096                                  int     hsb_height)
3097 {
3098         GtkBorder border;
3099         gint doc_width, doc_height;
3100         gdouble scale;
3101         gint other_page;
3102
3103         other_page = view->current_page ^ 1;
3104
3105         /* Find the largest of the two. */
3106         ev_page_cache_get_size (view->page_cache,
3107                                 view->current_page,
3108                                 view->rotation,
3109                                 1.0,
3110                                 &doc_width, &doc_height);
3111
3112         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
3113                 gint width_2, height_2;
3114                 ev_page_cache_get_size (view->page_cache,
3115                                         other_page,
3116                                         view->rotation,
3117                                         1.0,
3118                                         &width_2, &height_2);
3119                 if (width_2 > doc_width)
3120                         doc_width = width_2;
3121                 if (height_2 > doc_height)
3122                         doc_height = height_2;
3123         }
3124         compute_border (view, doc_width, doc_height, &border);
3125
3126         doc_width = doc_width * 2;
3127         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
3128         height -= (border.top + border.bottom + 2 * view->spacing);
3129
3130         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3131                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3132         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3133                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3134         else
3135                 g_assert_not_reached ();
3136
3137         ev_view_set_zoom (view, scale, FALSE);
3138 }
3139
3140 static void
3141 ev_view_zoom_for_size_single_page (EvView *view,
3142                                    int     width,
3143                                    int     height,
3144                                    int     vsb_width,
3145                                    int     hsb_height)
3146 {
3147         int doc_width, doc_height;
3148         GtkBorder border;
3149         gdouble scale;
3150
3151         ev_page_cache_get_size (view->page_cache,
3152                                 view->current_page,
3153                                 view->rotation,
3154                                 1.0,
3155                                 &doc_width,
3156                                 &doc_height);
3157         /* Get an approximate border */
3158         compute_border (view, width, height, &border);
3159
3160         width -= (border.left + border.right + 2 * view->spacing);
3161         height -= (border.top + border.bottom + 2 * view->spacing);
3162
3163         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3164                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3165         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3166                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3167         else
3168                 g_assert_not_reached ();
3169
3170         ev_view_set_zoom (view, scale, FALSE);
3171 }
3172
3173 void
3174 ev_view_set_zoom_for_size (EvView *view,
3175                            int     width,
3176                            int     height,
3177                            int     vsb_width,
3178                            int     hsb_height)
3179 {
3180         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
3181                           view->sizing_mode == EV_SIZING_BEST_FIT);
3182         g_return_if_fail (width >= 0);
3183         g_return_if_fail (height >= 0);
3184
3185         if (view->document == NULL)
3186                 return;
3187
3188         if (view->presentation)
3189                 ev_view_zoom_for_size_presentation (view, width, height);
3190         else if (view->continuous && view->dual_page)
3191                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
3192         else if (view->continuous)
3193                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
3194         else if (view->dual_page)
3195                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
3196         else
3197                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
3198 }
3199
3200 /*** Status text messages ***/
3201
3202 const char *
3203 ev_view_get_status (EvView *view)
3204 {
3205         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3206
3207         return view->status;
3208 }
3209
3210 static void
3211 ev_view_set_status (EvView *view, const char *message)
3212 {
3213         g_return_if_fail (EV_IS_VIEW (view));
3214
3215         if (message != view->status) {
3216                 g_free (view->status);
3217                 view->status = g_strdup (message);
3218                 g_object_notify (G_OBJECT (view), "status");
3219         }
3220 }
3221
3222 static void
3223 update_find_status_message (EvView *view)
3224 {
3225         char *message;
3226
3227         if (view->current_page == view->find_page) {
3228                 int results;
3229
3230                 results = ev_document_find_get_n_results
3231                                 (EV_DOCUMENT_FIND (view->document),
3232                                  view->current_page);
3233                 /* TRANS: Sometimes this could be better translated as
3234                    "%d hit(s) on this page".  Therefore this string
3235                    contains plural cases. */
3236                 message = g_strdup_printf (ngettext ("%d found on this page",
3237                                                      "%d found on this page",
3238                                                      results),
3239                                            results);
3240         } else {
3241                 double percent;
3242
3243                 percent = ev_document_find_get_progress
3244                                 (EV_DOCUMENT_FIND (view->document));
3245                 if (percent >= (1.0 - 1e-10)) {
3246                         message = g_strdup (_("Not found"));
3247                 } else {
3248                         message = g_strdup_printf (_("%3d%% remaining to search"),
3249                                                    (int) ((1.0 - percent) * 100));
3250                 }
3251
3252         }
3253         ev_view_set_find_status (view, message);
3254         g_free (message);
3255 }
3256
3257 const char *
3258 ev_view_get_find_status (EvView *view)
3259 {
3260         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3261
3262         return view->find_status;
3263 }
3264
3265 static void
3266 ev_view_set_find_status (EvView *view, const char *message)
3267 {
3268         g_return_if_fail (EV_IS_VIEW (view));
3269
3270         g_free (view->find_status);
3271         view->find_status = g_strdup (message);
3272         g_object_notify (G_OBJECT (view), "find-status");
3273 }
3274
3275 /*** Find ***/
3276
3277 static void
3278 jump_to_find_result (EvView *view)
3279 {
3280         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3281         EvRectangle rect;
3282         GdkRectangle view_rect;
3283         int n_results;
3284         int page = view->find_page;
3285
3286         n_results = ev_document_find_get_n_results (find, page);
3287
3288         if (n_results > 0  && view->find_result < n_results) {
3289                 ev_document_find_get_result
3290                         (find, page, view->find_result, &rect);
3291
3292                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
3293                 ensure_rectangle_is_visible (view, &view_rect);
3294         }
3295 }
3296
3297 static void
3298 jump_to_find_page (EvView *view, EvViewFindDirection direction)
3299 {
3300         int n_pages, i;
3301
3302         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3303
3304         for (i = 0; i < n_pages; i++) {
3305                 int has_results;
3306                 int page;
3307
3308                 if (direction == EV_VIEW_FIND_NEXT)
3309                         page = view->find_page + i;
3310                 else
3311                         page = view->find_page - i;
3312
3313
3314                 if (page >= n_pages) {
3315                         page = page - n_pages;
3316                 }
3317                 if (page < 0)
3318                         page = page + n_pages;
3319
3320                 has_results = ev_document_find_page_has_results
3321                                 (EV_DOCUMENT_FIND (view->document), page);
3322                 if (has_results == -1) {
3323                         view->find_page = page;
3324                         break;
3325                 } else if (has_results == 1) {
3326                         ev_page_cache_set_current_page (view->page_cache, page);
3327                         break;
3328                 }
3329         }
3330 }
3331
3332 gboolean
3333 ev_view_can_find_next (EvView *view)
3334 {
3335         if (EV_IS_DOCUMENT_FIND (view->document)) {
3336                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3337                 int i, n_pages;
3338
3339                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
3340                 for (i = 0; i < n_pages; i++) {
3341                         if (ev_document_find_get_n_results (find, i) > 0) {
3342                                 return TRUE;
3343                         }
3344                 }
3345         }
3346
3347         return FALSE;
3348 }
3349
3350 void
3351 ev_view_find_next (EvView *view)
3352 {
3353         int n_results, n_pages;
3354         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3355
3356         n_results = ev_document_find_get_n_results (find, view->current_page);
3357
3358         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3359
3360         view->find_result++;
3361
3362         if (view->find_result >= n_results) {
3363
3364                 view->find_result = 0;
3365                 view->find_page++;
3366                 if (view->find_page >= n_pages) {
3367                         view->find_page = 0;
3368                 }
3369
3370                 jump_to_find_page (view, EV_VIEW_FIND_NEXT);
3371                 jump_to_find_result (view);
3372         } else {
3373                 jump_to_find_result (view);
3374                 gtk_widget_queue_draw (GTK_WIDGET (view));
3375         }
3376 }
3377
3378 void
3379 ev_view_find_previous (EvView *view)
3380 {
3381         int n_results, n_pages;
3382         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3383         EvPageCache *page_cache;
3384
3385         page_cache = ev_page_cache_get (view->document);
3386
3387         n_results = ev_document_find_get_n_results (find, view->current_page);
3388
3389         n_pages = ev_page_cache_get_n_pages (page_cache);
3390
3391         view->find_result--;
3392
3393         if (view->find_result < 0) {
3394
3395                 view->find_page--;
3396                 if (view->find_page < 0) {
3397                         view->find_page = n_pages - 1;
3398                 }
3399
3400                 jump_to_find_page (view, EV_VIEW_FIND_PREV);
3401                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
3402                 jump_to_find_result (view);
3403         } else {
3404                 jump_to_find_result (view);
3405                 gtk_widget_queue_draw (GTK_WIDGET (view));
3406         }
3407 }
3408
3409 /*** Selections ***/
3410
3411 /* compute_new_selection_rect/text calculates the area currently selected by
3412  * view_rect.  each handles a different mode;
3413  */
3414 static GList *
3415 compute_new_selection_rect (EvView       *view,
3416                             GdkPoint     *start,
3417                             GdkPoint     *stop)
3418 {
3419         GdkRectangle view_rect;
3420         int n_pages, i;
3421         GList *list = NULL;
3422
3423         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
3424
3425         view_rect.x = MIN (start->x, stop->x);
3426         view_rect.y = MIN (start->y, stop->y);
3427         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
3428         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
3429
3430         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3431
3432         for (i = 0; i < n_pages; i++) {
3433                 GdkRectangle page_area;
3434                 GtkBorder border;
3435
3436                 if (get_page_extents (view, i, &page_area, &border)) {
3437                         GdkRectangle overlap;
3438
3439                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
3440                                 EvViewSelection *selection;
3441
3442                                 selection = g_new0 (EvViewSelection, 1);
3443                                 selection->page = i;
3444                                 view_rect_to_doc_rect (view, &overlap, &page_area,
3445                                                        &(selection->rect));
3446
3447                                 list = g_list_append (list, selection);
3448                         }
3449                 }
3450         }
3451
3452         return list;
3453 }
3454
3455 static gboolean
3456 gdk_rectangle_point_in (GdkRectangle *rectangle,
3457                         GdkPoint     *point)
3458 {
3459         return rectangle->x <= point->x &&
3460                 rectangle->y <= point->y &&
3461                 point->x < rectangle->x + rectangle->width &&
3462                 point->y < rectangle->y + rectangle->height;
3463 }
3464
3465 static GList *
3466 compute_new_selection_text (EvView   *view,
3467                             GdkPoint *start,
3468                             GdkPoint *stop)
3469 {
3470         int n_pages, i, first, last;
3471         GList *list = NULL;
3472         EvViewSelection *selection;
3473         gint width, height;
3474         int start_page, end_page;
3475
3476         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
3477
3478         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3479
3480         /* First figure out the range of pages the selection
3481          * affects. */
3482         first = n_pages;
3483         last = 0;
3484         if (view->continuous) {
3485                 start_page = 0;
3486                 end_page = n_pages;
3487         } else if (view->dual_page) {
3488                 start_page = view->start_page;
3489                 end_page = view->end_page + 1;
3490         } else {
3491                 start_page = view->current_page;
3492                 end_page = view->current_page + 1;
3493         }
3494
3495         for (i = start_page; i < end_page; i++) {
3496                 GdkRectangle page_area;
3497                 GtkBorder border;
3498
3499                 get_page_extents (view, i, &page_area, &border);
3500                 if (gdk_rectangle_point_in (&page_area, start) ||
3501                     gdk_rectangle_point_in (&page_area, stop)) {
3502                         if (first == n_pages)
3503                                 first = i;
3504                         last = i;
3505                 }
3506
3507         }
3508
3509
3510
3511         /* Now create a list of EvViewSelection's for the affected
3512          * pages.  This could be an empty list, a list of just one
3513          * page or a number of pages.*/
3514         for (i = first; i < last + 1; i++) {
3515                 GdkRectangle page_area;
3516                 GtkBorder border;
3517                 GdkPoint *point;
3518
3519                 ev_page_cache_get_size (view->page_cache, i,
3520                                         view->rotation,
3521                                         1.0, &width, &height);
3522
3523                 selection = g_new0 (EvViewSelection, 1);
3524                 selection->page = i;
3525                 selection->rect.x1 = selection->rect.y1 = 0;
3526                 selection->rect.x2 = width;
3527                 selection->rect.y2 = height;
3528
3529                 get_page_extents (view, i, &page_area, &border);
3530
3531                 if (gdk_rectangle_point_in (&page_area, start))
3532                         point = start;
3533                 else
3534                         point = stop;
3535
3536                 if (i == first)
3537                         view_point_to_doc_point (view, point, &page_area,
3538                                                  &selection->rect.x1,
3539                                                  &selection->rect.y1);
3540
3541                 /* If the selection is contained within just one page,
3542                  * make sure we don't write 'start' into both points
3543                  * in selection->rect. */
3544                 if (first == last)
3545                         point = stop;
3546
3547                 if (i == last)
3548                         view_point_to_doc_point (view, point, &page_area,
3549                                                  &selection->rect.x2,
3550                                                  &selection->rect.y2);
3551
3552                 list = g_list_append (list, selection);
3553         }
3554
3555         return list;
3556 }
3557
3558 /* This function takes the newly calculated list, and figures out which regions
3559  * have changed.  It then queues a redraw approporiately.
3560  */
3561 static void
3562 merge_selection_region (EvView *view,
3563                         GList  *new_list)
3564 {
3565         GList *old_list;
3566         GList *new_list_ptr, *old_list_ptr;
3567
3568         /* Update the selection */
3569         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
3570         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3571         view->selection_info.selections = new_list;
3572         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
3573         g_object_notify (G_OBJECT (view), "has-selection");
3574
3575         new_list_ptr = new_list;
3576         old_list_ptr = old_list;
3577
3578         while (new_list_ptr || old_list_ptr) {
3579                 EvViewSelection *old_sel, *new_sel;
3580                 int cur_page;
3581                 GdkRegion *region = NULL;
3582
3583                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
3584                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
3585
3586                 /* Assume that the lists are in order, and we run through them
3587                  * comparing them, one page at a time.  We come out with the
3588                  * first page we see. */
3589                 if (new_sel && old_sel) {
3590                         if (new_sel->page < old_sel->page) {
3591                                 new_list_ptr = new_list_ptr->next;
3592                                 old_sel = NULL;
3593                         } else if (new_sel->page > old_sel->page) {
3594                                 old_list_ptr = old_list_ptr->next;
3595                                 new_sel = NULL;
3596                         } else {
3597                                 new_list_ptr = new_list_ptr->next;
3598                                 old_list_ptr = old_list_ptr->next;
3599                         }
3600                 } else if (new_sel) {
3601                         new_list_ptr = new_list_ptr->next;
3602                 } else if (old_sel) {
3603                         old_list_ptr = old_list_ptr->next;
3604                 }
3605
3606                 g_assert (new_sel || old_sel);
3607
3608                 /* is the page we're looking at on the screen?*/
3609                 cur_page = new_sel ? new_sel->page : old_sel->page;
3610                 if (cur_page < view->start_page || cur_page > view->end_page)
3611                         continue;
3612
3613                 /* seed the cache with a new page.  We are going to need the new
3614                  * region too. */
3615                 if (new_sel) {
3616                         GdkRegion *tmp_region = NULL;
3617                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
3618                                                               cur_page,
3619                                                               view->scale,
3620                                                               &tmp_region);
3621                         if (tmp_region) {
3622                                 new_sel->covered_region = gdk_region_copy (tmp_region);
3623                         }
3624                 }
3625
3626                 /* Now we figure out what needs redrawing */
3627                 if (old_sel && new_sel) {
3628                         if (old_sel->covered_region &&
3629                             new_sel->covered_region) {
3630                                 /* We only want to redraw the areas that have
3631                                  * changed, so we xor the old and new regions
3632                                  * and redraw if it's different */
3633                                 region = gdk_region_copy (old_sel->covered_region);
3634                                 gdk_region_xor (region, new_sel->covered_region);
3635                                 if (gdk_region_empty (region)) {
3636                                         gdk_region_destroy (region);
3637                                         region = NULL;
3638                                 }
3639                         } else if (old_sel->covered_region) {
3640                                 region = gdk_region_copy (old_sel->covered_region);
3641                         } else if (new_sel->covered_region) {
3642                                 region = gdk_region_copy (new_sel->covered_region);
3643                         }
3644                 } else if (old_sel && !new_sel) {
3645                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
3646                                 region = gdk_region_copy (old_sel->covered_region);
3647                         }
3648                 } else if (!old_sel && new_sel) {
3649                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
3650                                 region = gdk_region_copy (new_sel->covered_region);
3651                         }
3652                 } else {
3653                         g_assert_not_reached ();
3654                 }
3655
3656                 /* Redraw the damaged region! */
3657                 if (region) {
3658                         GdkRectangle page_area;
3659                         GtkBorder border;
3660
3661                         get_page_extents (view, cur_page, &page_area, &border);
3662                         gdk_region_offset (region,
3663                                            page_area.x + border.left - view->scroll_x,
3664                                            page_area.y + border.top - view->scroll_y);
3665                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
3666                         gdk_region_destroy (region);
3667                 }
3668         }
3669
3670         /* Free the old list, now that we're done with it. */
3671         g_list_foreach (old_list, (GFunc) selection_free, NULL);
3672 }
3673
3674 static void
3675 compute_selections (EvView   *view,
3676                     GdkPoint *start,
3677                     GdkPoint *stop)
3678 {
3679         GList *list;
3680
3681         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
3682                 list = compute_new_selection_rect (view, start, stop);
3683         else
3684                 list = compute_new_selection_text (view, start, stop);
3685         merge_selection_region (view, list);
3686 }
3687
3688 /* Free's the selection.  It's up to the caller to queue redraws if needed.
3689  */
3690 static void
3691 selection_free (EvViewSelection *selection)
3692 {
3693         if (selection->covered_region)
3694                 gdk_region_destroy (selection->covered_region);
3695         g_free (selection);
3696 }
3697
3698 static void
3699 clear_selection (EvView *view)
3700 {
3701         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3702         view->selection_info.selections = NULL;
3703         view->selection_info.in_selection = FALSE;
3704         g_object_notify (G_OBJECT (view), "has-selection");
3705 }
3706
3707
3708 void
3709 ev_view_select_all (EvView *view)
3710 {
3711         int n_pages, i;
3712
3713         /* Disable selection on rotated pages for the 0.4.0 series */
3714         if (view->rotation != 0)
3715                 return;
3716
3717         clear_selection (view);
3718
3719         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3720         for (i = 0; i < n_pages; i++) {
3721                 int width, height;
3722                 EvViewSelection *selection;
3723
3724                 ev_page_cache_get_size (view->page_cache,
3725                                         i,
3726                                         view->rotation,
3727                                         1.0, &width, &height);
3728
3729                 selection = g_new0 (EvViewSelection, 1);
3730                 selection->page = i;
3731                 selection->rect.x1 = selection->rect.y1 = 0;
3732                 selection->rect.x2 = width;
3733                 selection->rect.y2 = height;
3734
3735                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
3736         }
3737
3738         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
3739         g_object_notify (G_OBJECT (view), "has-selection");
3740         gtk_widget_queue_draw (GTK_WIDGET (view));
3741 }
3742
3743 gboolean
3744 ev_view_get_has_selection (EvView *view)
3745 {
3746         return view->selection_info.selections != NULL;
3747 }
3748
3749 static char *
3750 get_selected_text (EvView *ev_view)
3751 {
3752         GString *text;
3753         GList *l;
3754
3755         text = g_string_new (NULL);
3756
3757         ev_document_doc_mutex_lock ();
3758
3759         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
3760                 EvViewSelection *selection = (EvViewSelection *)l->data;
3761                 char *tmp;
3762
3763                 tmp = ev_document_get_text (ev_view->document,
3764                                             selection->page,
3765                                             &selection->rect);
3766                 g_string_append (text, tmp);
3767                 g_free (tmp);
3768         }
3769
3770         ev_document_doc_mutex_unlock ();
3771
3772         return g_string_free (text, FALSE);
3773 }
3774
3775 void
3776 ev_view_copy (EvView *ev_view)
3777 {
3778         GtkClipboard *clipboard;
3779         char *text;
3780
3781         if (!ev_document_can_get_text (ev_view->document)) {
3782                 return;
3783         }
3784
3785         text = get_selected_text (ev_view);
3786         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3787                                               GDK_SELECTION_CLIPBOARD);
3788         gtk_clipboard_set_text (clipboard, text, -1);
3789         g_free (text);
3790 }
3791
3792 static void
3793 ev_view_primary_get_cb (GtkClipboard     *clipboard,
3794                         GtkSelectionData *selection_data,
3795                         guint             info,
3796                         gpointer          data)
3797 {
3798         EvView *ev_view = EV_VIEW (data);
3799         char *text;
3800
3801         if (!ev_document_can_get_text (ev_view->document)) {
3802                 return;
3803         }
3804
3805         text = get_selected_text (ev_view);
3806         gtk_selection_data_set_text (selection_data, text, -1);
3807         g_free (text);
3808 }
3809
3810 static void
3811 ev_view_primary_clear_cb (GtkClipboard *clipboard,
3812                           gpointer      data)
3813 {
3814         EvView *view = EV_VIEW (data);
3815
3816         clear_selection (view);
3817 }
3818
3819 static void
3820 ev_view_update_primary_selection (EvView *ev_view)
3821 {
3822         GtkClipboard *clipboard;
3823
3824         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3825                                               GDK_SELECTION_PRIMARY);
3826
3827         if (ev_view->selection_info.selections) {
3828                 if (!gtk_clipboard_set_with_owner (clipboard,
3829                                                    targets,
3830                                                    G_N_ELEMENTS (targets),
3831                                                    ev_view_primary_get_cb,
3832                                                    ev_view_primary_clear_cb,
3833                                                    G_OBJECT (ev_view)))
3834                         ev_view_primary_clear_cb (clipboard, ev_view);
3835         } else {
3836                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
3837                         gtk_clipboard_clear (clipboard);
3838         }
3839 }
3840
3841 /*** Cursor operations ***/
3842
3843 static GdkCursor *
3844 ev_view_create_invisible_cursor(void)
3845 {
3846        GdkBitmap *empty;
3847        GdkColor black = { 0, 0, 0, 0 };
3848        static char bits[] = { 0x00 };
3849
3850        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
3851
3852        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
3853 }
3854
3855 static void
3856 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
3857 {
3858         GdkCursor *cursor = NULL;
3859         GdkDisplay *display;
3860         GtkWidget *widget;
3861
3862         if (view->cursor == new_cursor) {
3863                 return;
3864         }
3865
3866         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
3867         display = gtk_widget_get_display (widget);
3868         view->cursor = new_cursor;
3869
3870         switch (new_cursor) {
3871                 case EV_VIEW_CURSOR_NORMAL:
3872                         gdk_window_set_cursor (widget->window, NULL);
3873                         break;
3874                 case EV_VIEW_CURSOR_IBEAM:
3875                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
3876                         break;
3877                 case EV_VIEW_CURSOR_LINK:
3878                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
3879                         break;
3880                 case EV_VIEW_CURSOR_WAIT:
3881                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
3882                         break;
3883                 case EV_VIEW_CURSOR_HIDDEN:
3884                         cursor = ev_view_create_invisible_cursor ();
3885                         break;
3886                 case EV_VIEW_CURSOR_DRAG:
3887                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
3888                         break;
3889         }
3890
3891         if (cursor) {
3892                 gdk_window_set_cursor (widget->window, cursor);
3893                 gdk_cursor_unref (cursor);
3894                 gdk_flush();
3895         }
3896 }
3897
3898 void
3899 ev_view_hide_cursor (EvView *view)
3900 {
3901        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
3902 }
3903
3904 void
3905 ev_view_show_cursor (EvView *view)
3906 {
3907        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3908 }
3909
3910 gboolean
3911 ev_view_next_page (EvView *view)
3912 {
3913         int page;
3914
3915         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3916
3917         page = ev_page_cache_get_current_page (view->page_cache);
3918         page = ev_view_get_dual_page (view) ? page + 2 : page + 1;
3919
3920         if (page < ev_page_cache_get_n_pages (view->page_cache)) {
3921                 ev_page_cache_set_current_page (view->page_cache, page);
3922                 return TRUE;
3923         } else {
3924                 return FALSE;
3925         }
3926 }
3927
3928 gboolean
3929 ev_view_previous_page (EvView *view)
3930 {
3931         int page;
3932
3933         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3934
3935         page = ev_page_cache_get_current_page (view->page_cache);
3936         page = ev_view_get_dual_page (view) ? page - 2 : page - 1;
3937
3938         if (page >= 0) {
3939                 ev_page_cache_set_current_page (view->page_cache, page);
3940                 return TRUE;
3941         } else {
3942                 return FALSE;
3943         }
3944 }
3945
3946 /*** Enum description for usage in signal ***/
3947
3948 GType
3949 ev_sizing_mode_get_type (void)
3950 {
3951   static GType etype = 0;
3952   if (etype == 0) {
3953     static const GEnumValue values[] = {
3954       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
3955       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
3956       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
3957       { 0, NULL, NULL }
3958     };
3959     etype = g_enum_register_static ("EvSizingMode", values);
3960   }
3961   return etype;
3962 }