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 <gtk/gtkalignment.h>
  23 #include <glib/gi18n.h>
  24 #include <gtk/gtkbindings.h>
  25 #include <gtk/gtkselection.h>
  26 #include <gtk/gtkclipboard.h>
  27 #include <gdk/gdkkeysyms.h>
  28 #include <libgnomevfs/gnome-vfs-utils.h>
  29
  30 #include "ev-marshal.h"
  31 #include "ev-view.h"
  32 #include "ev-utils.h"
  33 #include "ev-selection.h"
  34 #include "ev-document-find.h"
  35 #include "ev-document-misc.h"
  36 #include "ev-debug.h"
  37 #include "ev-job-queue.h"
  38 #include "ev-page-cache.h"
  39 #include "ev-pixbuf-cache.h"
  40 #include "ev-tooltip.h"
  41
  42 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  43 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  44 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  45
  46
  47 enum {
  48         PROP_0,
  49         PROP_STATUS,
  50         PROP_FIND_STATUS,
  51         PROP_CONTINUOUS,
  52         PROP_DUAL_PAGE,
  53         PROP_FULLSCREEN,
  54         PROP_PRESENTATION,
  55         PROP_SIZING_MODE,
  56         PROP_ZOOM,
  57         PROP_ROTATION,
  58 };
  59
  60 enum {
  61         SIGNAL_BINDING_ACTIVATED,
  62         SIGNAL_ZOOM_INVALID,
  63         SIGNAL_EXTERNAL_LINK,
  64         N_SIGNALS,
  65 };
  66
  67 enum {
  68         TARGET_STRING,
  69         TARGET_TEXT,
  70         TARGET_COMPOUND_TEXT,
  71         TARGET_UTF8_STRING,
  72         TARGET_TEXT_BUFFER_CONTENTS
  73 };
  74
  75 static const GtkTargetEntry targets[] = {
  76         { "STRING", 0, TARGET_STRING },
  77         { "TEXT",   0, TARGET_TEXT },
  78         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  79         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  80 };
  81
  82 static guint signals[N_SIGNALS];
  83
  84 typedef enum {
  85         EV_VIEW_CURSOR_NORMAL,
  86         EV_VIEW_CURSOR_IBEAM,
  87         EV_VIEW_CURSOR_LINK,
  88         EV_VIEW_CURSOR_WAIT,
  89         EV_VIEW_CURSOR_HIDDEN,
  90         EV_VIEW_CURSOR_DRAG
  91 } EvViewCursor;
  92
  93 typedef enum {
  94         EV_VIEW_FIND_NEXT,
  95         EV_VIEW_FIND_PREV
  96 } EvViewFindDirection;
  97
  98 #define ZOOM_IN_FACTOR  1.2
  99 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
 100
 101 #define MIN_SCALE 0.05409
 102 #define MAX_SCALE 4.0
 103
 104 /* Information for middle clicking and moving around the doc */
 105 typedef struct {
 106         gboolean in_drag;
 107         GdkPoint start;
 108         gdouble hadj;
 109         gdouble vadj;
 110 } DragInfo;
 111
 112 /* Information for handling selection */
 113 typedef struct {
 114         gboolean in_selection;
 115         GdkPoint start;
 116         GList *selections;
 117 } SelectionInfo;
 118
 119 typedef enum {
 120         SCROLL_TO_KEEP_POSITION,
 121         SCROLL_TO_CURRENT_PAGE,
 122         SCROLL_TO_CENTER
 123 } PendingScroll;
 124
 125 struct _EvView {
 126         GtkWidget parent_instance;
 127
 128         EvDocument *document;
 129
 130         char *status;
 131         char *find_status;
 132
 133         /* Scrolling */
 134         GtkAdjustment *hadjustment;
 135         GtkAdjustment *vadjustment;
 136
 137         gint scroll_x;
 138         gint scroll_y;
 139
 140         /* Information for middle clicking and dragging around. */
 141         DragInfo drag_info;
 142
 143         /* Selection */
 144         gint motion_x;
 145         gint motion_y;
 146         guint selection_update_id;
 147
 148         EvViewSelectionMode selection_mode;
 149         SelectionInfo selection_info;
 150
 151         int pressed_button;
 152         EvViewCursor cursor;
 153         GtkWidget *link_tooltip;
 154         EvLink *hovered_link;
 155
 156         EvPageCache *page_cache;
 157         EvPixbufCache *pixbuf_cache;
 158
 159         gint start_page;
 160         gint end_page;
 161         gint current_page;
 162
 163         EvJobRender *current_job;
 164
 165         int find_page;
 166         int find_result;
 167         int spacing;
 168
 169         int rotation;
 170         double scale;
 171
 172         gboolean continuous;
 173         gboolean dual_page;
 174         gboolean fullscreen;
 175         gboolean presentation;
 176         EvSizingMode sizing_mode;
 177
 178         PendingScroll pending_scroll;
 179         gboolean pending_resize;
 180 };
 181
 182 struct _EvViewClass {
 183         GtkWidgetClass parent_class;
 184
 185         void    (*set_scroll_adjustments) (EvView         *view,
 186                                            GtkAdjustment  *hadjustment,
 187                                            GtkAdjustment  *vadjustment);
 188         void    (*binding_activated)      (EvView         *view,
 189                                            GtkScrollType   scroll,
 190                                            gboolean        horizontal);
 191         void    (*zoom_invalid)           (EvView         *view);
 192         void    (*external_link)          (EvView         *view,
 193                                            EvLink         *link);
 194 };
 195
 196 /*** Scrolling ***/
 197 static void       scroll_to_current_page                     (EvView *view,
 198                                                               GtkOrientation orientation);
 199 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 200                                                               GtkAdjustment      *hadjustment,
 201                                                               GtkAdjustment      *vadjustment);
 202 static void       view_update_range_and_current_page         (EvView             *view);
 203 static void       set_scroll_adjustment                      (EvView             *view,
 204                                                               GtkOrientation      orientation,
 205                                                               GtkAdjustment      *adjustment);
 206 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 207                                                               GtkAdjustment      *hadjustment,
 208                                                               GtkAdjustment      *vadjustment);
 209 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 210                                                               guint               keyval,
 211                                                               GtkScrollType       scroll,
 212                                                               gboolean            horizontal);
 213 static void       ev_view_binding_activated                  (EvView             *view,
 214                                                               GtkScrollType       scroll,
 215                                                               gboolean            horizontal);
 216 static void       ensure_rectangle_is_visible                (EvView             *view,
 217                                                               GdkRectangle       *rect);
 218
 219 /*** Geometry computations ***/
 220 static void       compute_border                             (EvView             *view,
 221                                                               int                 width,
 222                                                               int                 height,
 223                                                               GtkBorder          *border);
 224 static void       get_page_y_offset                          (EvView *view,
 225                                                               int page,
 226                                                               double zoom,
 227                                                               int *y_offset);
 228 static gboolean   get_page_extents                           (EvView             *view,
 229                                                               gint                page,
 230                                                               GdkRectangle       *page_area,
 231                                                               GtkBorder          *border);
 232 static void       view_rect_to_doc_rect                      (EvView             *view,
 233                                                               GdkRectangle       *view_rect,
 234                                                               GdkRectangle       *page_area,
 235                                                               EvRectangle        *doc_rect);
 236 static void       doc_rect_to_view_rect                      (EvView             *view,
 237                                                               int                 page,
 238                                                               EvRectangle        *doc_rect,
 239                                                               GdkRectangle       *view_rect);
 240 static void       find_page_at_location                      (EvView             *view,
 241                                                               gdouble             x,
 242                                                               gdouble             y,
 243                                                               gint               *page,
 244                                                               gint               *x_offset,
 245                                                               gint               *y_offset);
 246
 247 /*** Hyperrefs ***/
 248 static EvLink*    get_link_at_location                       (EvView             *view,
 249                                                               gdouble             x,
 250                                                               gdouble             y);
 251 static char*      tip_from_link                              (EvView             *view,
 252                                                               EvLink             *link);
 253 static void       handle_link_over_xy                        (EvView *view,
 254                                                               gint x,
 255                                                               gint y);
 256 /*** GtkWidget implementation ***/
 257 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 258                                                               GtkRequisition     *requisition);
 259 static void       ev_view_size_request_continuous            (EvView             *view,
 260                                                               GtkRequisition     *requisition);
 261 static void       ev_view_size_request_dual_page             (EvView             *view,
 262                                                               GtkRequisition     *requisition);
 263 static void       ev_view_size_request_single_page           (EvView             *view,
 264                                                               GtkRequisition     *requisition);
 265 static void       ev_view_size_request                       (GtkWidget          *widget,
 266                                                               GtkRequisition     *requisition);
 267 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 268                                                               GtkAllocation      *allocation);
 269 static void       ev_view_realize                            (GtkWidget          *widget);
 270 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 271                                                               GdkEventScroll     *event);
 272 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 273                                                               GdkEventExpose     *event);
 274 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 275                                                               GdkEventButton     *event);
 276 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 277                                                               GdkEventMotion     *event);
 278 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 279                                                               GdkEventButton     *event);
 280 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 281                                                               GdkEventCrossing   *event);
 282 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 283                                                               GdkEventCrossing   *event);
 284 static void       ev_view_style_set                          (GtkWidget          *widget,
 285                                                               GtkStyle           *old_style);
 286
 287 /*** Drawing ***/
 288 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 289 static void       draw_rubberband                            (GtkWidget          *widget,
 290                                                               GdkWindow          *window,
 291                                                               const GdkRectangle *rect,
 292                                                               guchar              alpha);
 293 static void       highlight_find_results                     (EvView             *view,
 294                                                               int                 page);
 295 static void       draw_one_page                              (EvView             *view,
 296                                                               gint                page,
 297                                                               GdkRectangle       *page_area,
 298                                                               GtkBorder          *border,
 299                                                               GdkRectangle       *expose_area);
 300
 301 /*** Callbacks ***/
 302 static void       find_changed_cb                            (EvDocument         *document,
 303                                                               int                 page,
 304                                                               EvView             *view);
 305 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 306                                                               EvView             *view);
 307 static void       page_changed_cb                            (EvPageCache        *page_cache,
 308                                                               int                 new_page,
 309                                                               EvView             *view);
 310 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 311                                                               EvView             *view);
 312
 313 /*** GObject ***/
 314 static void       ev_view_finalize                           (GObject            *object);
 315 static void       ev_view_destroy                            (GtkObject          *object);
 316 static void       ev_view_set_property                       (GObject            *object,
 317                                                               guint               prop_id,
 318                                                               const GValue       *value,
 319                                                               GParamSpec         *pspec);
 320 static void       ev_view_get_property                       (GObject            *object,
 321                                                               guint               prop_id,
 322                                                               GValue             *value,
 323                                                               GParamSpec         *pspec);
 324 static void       ev_view_class_init                         (EvViewClass        *class);
 325 static void       ev_view_init                               (EvView             *view);
 326
 327 /*** Zoom and sizing ***/
 328 static double   zoom_for_size_fit_width                      (int doc_width,
 329                                                               int doc_height,
 330                                                               int target_width,
 331                                                               int target_height,
 332                                                               int vsb_width);
 333 static double   zoom_for_size_fit_height                     (int doc_width,
 334                                                               int doc_height,
 335                                                               int target_width,
 336                                                               int target_height,
 337                                                               int vsb_height);
 338 static double   zoom_for_size_best_fit                       (int doc_width,
 339                                                               int doc_height,
 340                                                               int target_width,
 341                                                               int target_height,
 342                                                               int vsb_width,
 343                                                               int hsb_width);
 344 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 345                                                               int     width,
 346                                                               int     height);
 347 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 348                                                                 int     width,
 349                                                                 int     height,
 350                                                                 int     vsb_width,
 351                                                                 int     hsb_height);
 352 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 353                                                                 int     width,
 354                                                                 int     height,
 355                                                                 int     vsb_width,
 356                                                                 int     hsb_height);
 357 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 358                                                                 int     width,
 359                                                                 int     height,
 360                                                                 int     vsb_width,
 361                                                                 int     hsb_height);
 362 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 363                                                                 int     width,
 364                                                                 int     height,
 365                                                                 int     vsb_width,
 366                                                                 int     hsb_height);
 367 /*** Cursors ***/
 368 static GdkCursor* ev_view_create_invisible_cursor            (void);
 369 static void       ev_view_set_cursor                         (EvView             *view,
 370                                                               EvViewCursor        new_cursor);
 371
 372 /*** Status messages ***/
 373 static void       ev_view_set_status                         (EvView             *view,
 374                                                               const char         *message);
 375 static void       update_find_status_message                 (EvView             *view);
 376 static void       ev_view_set_find_status                    (EvView             *view,
 377                                                               const char         *message);
 378 /*** Find ***/
 379 static void       jump_to_find_result                        (EvView             *view);
 380 static void       jump_to_find_page                          (EvView             *view,
 381                                                               EvViewFindDirection direction);
 382
 383 /*** Selection ***/
 384 static void       compute_selections                         (EvView             *view,
 385                                                               GdkPoint           *start,
 386                                                               GdkPoint           *stop);
 387 static void       clear_selection                            (EvView             *view);
 388 static void       selection_free                             (EvViewSelection    *selection);
 389 static char*      get_selected_text                          (EvView             *ev_view);
 390 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 391                                                               GtkSelectionData   *selection_data,
 392                                                               guint               info,
 393                                                               gpointer            data);
 394 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 395                                                               gpointer            data);
 396 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 397
 398
 399 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 400
 401 static void
 402 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 403 {
 404         GdkRectangle page_area;
 405         GtkBorder border;
 406
 407         if (view->document == NULL) {
 408                 return;
 409         }
 410
 411         get_page_extents (view, view->current_page, &page_area, &border);
 412
 413         if (orientation == GTK_ORIENTATION_VERTICAL) {
 414                 if (view->continuous) {
 415                         gtk_adjustment_clamp_page (view->vadjustment,
 416                                                    page_area.y - view->spacing,
 417                                                    page_area.y + view->vadjustment->page_size);
 418                 } else {
 419                         gtk_adjustment_set_value (view->vadjustment,
 420                                                   view->vadjustment->lower);
 421                 }
 422         } else {
 423                 if (view->dual_page) {
 424                         gtk_adjustment_clamp_page (view->hadjustment,
 425                                                    page_area.x,
 426                                                    page_area.x + view->hadjustment->page_size);
 427                 } else {
 428                         gtk_adjustment_set_value (view->hadjustment,
 429                                                   CLAMP (view->hadjustment->value,
 430                                                   view->hadjustment->lower,
 431                                                   view->hadjustment->upper -
 432                                                   view->hadjustment->page_size));
 433                 }
 434         }
 435 }
 436
 437 static void
 438 view_set_adjustment_values (EvView         *view,
 439                             GtkOrientation  orientation)
 440 {
 441         GtkWidget *widget = GTK_WIDGET (view);
 442         GtkAdjustment *adjustment;
 443         int requisition;
 444         int allocation;
 445
 446         double factor;
 447         gint new_value;
 448
 449         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 450                 requisition = widget->requisition.width;
 451                 allocation = widget->allocation.width;
 452                 adjustment = view->hadjustment;
 453         } else {
 454                 requisition = widget->requisition.height;
 455                 allocation = widget->allocation.height;
 456                 adjustment = view->vadjustment;
 457         }
 458
 459         if (!adjustment)
 460                 return;
 461
 462         factor = 1.0;
 463         switch (view->pending_scroll) {
 464                 case SCROLL_TO_KEEP_POSITION:
 465                         factor = (adjustment->value) / adjustment->upper;
 466                         break;
 467                 case SCROLL_TO_CURRENT_PAGE:
 468                         break;
 469                 case SCROLL_TO_CENTER:
 470                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 471                         break;
 472         }
 473
 474         adjustment->page_size = allocation;
 475         adjustment->step_increment = allocation * 0.1;
 476         adjustment->page_increment = allocation * 0.9;
 477         adjustment->lower = 0;
 478         adjustment->upper = MAX (allocation, requisition);
 479
 480         /*
 481          * We add 0.5 to the values before to average out our rounding errors.
 482          */
 483         switch (view->pending_scroll) {
 484                 case SCROLL_TO_KEEP_POSITION:
 485                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 486                         gtk_adjustment_set_value (adjustment, (int)new_value);
 487                         break;
 488                 case SCROLL_TO_CURRENT_PAGE:
 489                         scroll_to_current_page (view, orientation);
 490                         break;
 491                 case SCROLL_TO_CENTER:
 492                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 493                                            0, adjustment->upper - adjustment->page_size);
 494                         gtk_adjustment_set_value (adjustment, (int)new_value);
 495                         break;
 496         }
 497
 498         gtk_adjustment_changed (adjustment);
 499 }
 500
 501 static void
 502 view_update_range_and_current_page (EvView *view)
 503 {
 504         if (view->pending_scroll != SCROLL_TO_KEEP_POSITION)
 505                 return;
 506
 507         /* Presentation trumps all other modes */
 508         if (view->presentation) {
 509                 view->start_page = view->current_page;
 510                 view->end_page = view->current_page;
 511         } else if (view->continuous) {
 512                 GdkRectangle current_area, unused, page_area;
 513                 GtkBorder border;
 514                 gint current_page;
 515                 gboolean found = FALSE;
 516                 int i;
 517
 518                 if (!(view->vadjustment && view->hadjustment))
 519                         return;
 520
 521                 current_area.x = view->hadjustment->value;
 522                 current_area.width = view->hadjustment->upper;
 523                 current_area.y = view->vadjustment->value;
 524                 current_area.height = view->vadjustment->page_size;
 525
 526                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 527
 528                         get_page_extents (view, i, &page_area, &border);
 529
 530                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 531                                 if (! found) {
 532                                         view->start_page = i;
 533                                         found = TRUE;
 534
 535                                 }
 536                                 view->end_page = i;
 537                         } else if (found) {
 538                                 break;
 539                         }
 540                 }
 541
 542                 current_page = ev_page_cache_get_current_page (view->page_cache);
 543
 544                 if (current_page < view->start_page || current_page > view->end_page) {
 545                         view->current_page = view->start_page;
 546                         ev_page_cache_set_current_page (view->page_cache, view->start_page);
 547                 }
 548         } else {
 549                 if (view->dual_page) {
 550                         if (view->current_page % 2 == 0) {
 551                                 view->start_page = view->current_page;
 552                                 if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 553                                         view->end_page = view->start_page + 1;
 554                                 else
 555                                         view->end_page = view->start_page;
 556                         } else {
 557                                 view->start_page = view->current_page - 1;
 558                                 view->end_page = view->current_page;
 559                         }
 560                 } else {
 561                         view->start_page = view->current_page;
 562                         view->end_page = view->current_page;
 563                 }
 564         }
 565
 566         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 567                                         view->start_page,
 568                                         view->end_page,
 569                                         view->rotation,
 570                                         view->scale,
 571                                         view->selection_info.selections);
 572 }
 573
 574 static void
 575 set_scroll_adjustment (EvView *view,
 576                        GtkOrientation  orientation,
 577                        GtkAdjustment  *adjustment)
 578 {
 579         GtkAdjustment **to_set;
 580
 581         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 582                 to_set = &view->hadjustment;
 583         else
 584                 to_set = &view->vadjustment;
 585
 586         if (*to_set != adjustment) {
 587                 if (*to_set) {
 588                         g_signal_handlers_disconnect_by_func (*to_set,
 589                                                               (gpointer) on_adjustment_value_changed,
 590                                                               view);
 591                         g_object_unref (*to_set);
 592                 }
 593
 594                 *to_set = adjustment;
 595                 view_set_adjustment_values (view, orientation);
 596
 597                 if (*to_set) {
 598                         g_object_ref (*to_set);
 599                         g_signal_connect (*to_set, "value_changed",
 600                                           G_CALLBACK (on_adjustment_value_changed), view);
 601                 }
 602         }
 603 }
 604
 605 static void
 606 ev_view_set_scroll_adjustments (EvView *view,
 607                                 GtkAdjustment  *hadjustment,
 608                                 GtkAdjustment  *vadjustment)
 609 {
 610         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 611         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 612
 613         on_adjustment_value_changed (NULL, view);
 614 }
 615
 616 static void
 617 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 618                            guint           keyval,
 619                            GtkScrollType   scroll,
 620                            gboolean        horizontal)
 621 {
 622   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 623
 624   gtk_binding_entry_add_signal (binding_set, keyval, 0,
 625                                 "binding_activated", 2,
 626                                 GTK_TYPE_SCROLL_TYPE, scroll,
 627                                 G_TYPE_BOOLEAN, horizontal);
 628   gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
 629                                 "binding_activated", 2,
 630                                 GTK_TYPE_SCROLL_TYPE, scroll,
 631                                 G_TYPE_BOOLEAN, horizontal);
 632 }
 633
 634 void
 635 ev_view_scroll (EvView        *view,
 636                 EvScrollType   scroll)
 637 {
 638         GtkAdjustment *adjustment;
 639         double value, increment;
 640         gboolean first_page = FALSE;
 641         gboolean last_page = FALSE;
 642
 643         /* Assign values for increment and vertical adjustment */
 644         adjustment = view->vadjustment;
 645         increment = adjustment->page_size * 0.75;
 646         value = adjustment->value;
 647
 648         /* Assign boolean for first and last page */
 649         if (view->current_page == 0)
 650                 first_page = TRUE;
 651         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 652                 last_page = TRUE;
 653
 654         switch (scroll) {
 655                 case EV_SCROLL_PAGE_BACKWARD:
 656                         /* Do not jump backwards if at the first page */
 657                         if (value == (adjustment->lower) && first_page) {
 658                                 /* Do nothing */
 659                                 /* At the top of a page, assign the upper bound limit of previous page */
 660                         } else if (value == (adjustment->lower)) {
 661                                 value = adjustment->upper - adjustment->page_size;
 662                                 ev_page_cache_set_current_page (view->page_cache, view->current_page - 1);
 663                                 /* Jump to the top */
 664                         } else {
 665                                 value = MAX (value - increment, adjustment->lower);
 666                         }
 667                         break;
 668                 case EV_SCROLL_PAGE_FORWARD:
 669                         /* Do not jump forward if at the last page */
 670                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 671                                 /* Do nothing */
 672                         /* At the bottom of a page, assign the lower bound limit of next page */
 673                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 674                                 value = 0;
 675                                 ev_page_cache_set_current_page (view->page_cache, view->current_page + 1);
 676                         /* Jump to the bottom */
 677                         } else {
 678                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 679                         }
 680                         break;
 681                 default:
 682                         break;
 683         }
 684
 685         gtk_adjustment_set_value (adjustment, value);
 686 }
 687
 688 static void
 689 ev_view_binding_activated (EvView *view,
 690                            GtkScrollType scroll,
 691                            gboolean horizontal)
 692 {
 693         GtkAdjustment *adjustment;
 694         double value;
 695
 696         if (view->presentation) {
 697                 switch (scroll) {
 698                         case GTK_SCROLL_STEP_BACKWARD:
 699                                 ev_view_previous_page (view);
 700                                 break;
 701                         case GTK_SCROLL_STEP_FORWARD:
 702                                 ev_view_next_page (view);
 703                                 break;
 704                         default:
 705                                 break;
 706                 }
 707                 return;
 708         }
 709
 710         if (horizontal) {
 711                 adjustment = view->hadjustment;
 712         } else {
 713                 adjustment = view->vadjustment;
 714         }
 715
 716         value = adjustment->value;
 717
 718         switch (scroll) {
 719                 case GTK_SCROLL_STEP_BACKWARD:
 720                         value -= adjustment->step_increment;
 721                         break;
 722                 case GTK_SCROLL_STEP_FORWARD:
 723                         value += adjustment->step_increment;
 724                         break;
 725                 default:
 726                         break;
 727         }
 728
 729         value = CLAMP (value, adjustment->lower,
 730                        adjustment->upper - adjustment->page_size);
 731
 732         gtk_adjustment_set_value (adjustment, value);
 733 }
 734
 735 #define MARGIN 5
 736
 737 static void
 738 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 739 {
 740         GtkWidget *widget = GTK_WIDGET (view);
 741         GtkAdjustment *adjustment;
 742         int value;
 743
 744         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
 745
 746         adjustment = view->vadjustment;
 747
 748         if (rect->y < adjustment->value) {
 749                 value = MAX (adjustment->lower, rect->y - MARGIN);
 750                 gtk_adjustment_set_value (view->vadjustment, value);
 751         } else if (rect->y + rect->height >
 752                    adjustment->value + widget->allocation.height) {
 753                 value = MIN (adjustment->upper, rect->y + rect->height -
 754                              widget->allocation.height + MARGIN);
 755                 gtk_adjustment_set_value (view->vadjustment, value);
 756         }
 757
 758         adjustment = view->hadjustment;
 759
 760         if (rect->x < adjustment->value) {
 761                 value = MAX (adjustment->lower, rect->x - MARGIN);
 762                 gtk_adjustment_set_value (view->hadjustment, value);
 763         } else if (rect->x + rect->height >
 764                    adjustment->value + widget->allocation.width) {
 765                 value = MIN (adjustment->upper, rect->x + rect->width -
 766                              widget->allocation.width + MARGIN);
 767                 gtk_adjustment_set_value (view->hadjustment, value);
 768         }
 769 }
 770
 771 /*** Geometry computations ***/
 772
 773 static void
 774 compute_border (EvView *view, int width, int height, GtkBorder *border)
 775 {
 776         if (view->presentation) {
 777                 border->left = 0;
 778                 border->right = 0;
 779                 border->top = 0;
 780                 border->bottom = 0;
 781         } else {
 782                 ev_document_misc_get_page_border_size (width, height, border);
 783         }
 784 }
 785
 786 static void
 787 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 788 {
 789         int max_width, offset;
 790         GtkBorder border;
 791
 792         g_return_if_fail (y_offset != NULL);
 793
 794         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 795
 796         compute_border (view, max_width, max_width, &border);
 797
 798         if (view->dual_page) {
 799                 ev_page_cache_get_height_to_page (view->page_cache, page,
 800                                                   view->rotation, zoom, NULL, &offset);
 801                 offset += (page / 2 + 1) * view->spacing + (page / 2) * (border.top + border.bottom);
 802         } else {
 803                 ev_page_cache_get_height_to_page (view->page_cache, page,
 804                                                   view->rotation, zoom, &offset, NULL);
 805                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 806         }
 807
 808         *y_offset = offset;
 809         return;
 810 }
 811
 812 static gboolean
 813 get_page_extents (EvView       *view,
 814                   gint          page,
 815                   GdkRectangle *page_area,
 816                   GtkBorder    *border)
 817 {
 818         GtkWidget *widget;
 819         int width, height;
 820
 821         widget = GTK_WIDGET (view);
 822
 823         /* Get the size of the page */
 824         ev_page_cache_get_size (view->page_cache, page,
 825                                 view->rotation,
 826                                 view->scale,
 827                                 &width, &height);
 828         compute_border (view, width, height, border);
 829         page_area->width = width + border->left + border->right;
 830         page_area->height = height + border->top + border->bottom;
 831
 832         if (view->presentation) {
 833                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 834                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 835         } else if (view->continuous) {
 836                 gint max_width;
 837                 gint x, y;
 838
 839                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 840                                              view->scale, &max_width);
 841                 max_width = max_width + border->left + border->right;
 842                 /* Get the location of the bounding box */
 843                 if (view->dual_page) {
 844                         x = view->spacing + (page % 2) * (max_width + view->spacing);
 845                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 846                         if (page % 2 == 0)
 847                                 x = x + (max_width - width - border->left - border->right);
 848                 } else {
 849                         x = view->spacing;
 850                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 851                 }
 852
 853                 get_page_y_offset (view, page, view->scale, &y);
 854
 855                 page_area->x = x;
 856                 page_area->y = y;
 857         } else {
 858                 gint x, y;
 859                 if (view->dual_page) {
 860                         gint width_2, height_2;
 861                         gint max_width = width;
 862                         gint max_height = height;
 863                         GtkBorder overall_border;
 864                         gint other_page;
 865
 866                         other_page = page ^ 1;
 867
 868                         /* First, we get the bounding box of the two pages */
 869                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
 870                                 ev_page_cache_get_size (view->page_cache,
 871                                                         other_page,
 872                                                         view->rotation,
 873                                                         view->scale,
 874                                                         &width_2, &height_2);
 875                                 if (width_2 > width)
 876                                         max_width = width_2;
 877                                 if (height_2 > height)
 878                                         max_height = height_2;
 879                         }
 880                         compute_border (view, max_width, max_height, &overall_border);
 881
 882                         /* Find the offsets */
 883                         x = view->spacing;
 884                         y = view->spacing;
 885
 886                         /* Adjust for being the left or right page */
 887                         if (page % 2 == 0)
 888                                 x = x + max_width - width;
 889                         else
 890                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 891
 892                         y = y + (max_height - height)/2;
 893
 894                         /* Adjust for extra allocation */
 895                         x = x + MAX (0, widget->allocation.width -
 896                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 897                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 898                 } else {
 899                         x = view->spacing;
 900                         y = view->spacing;
 901
 902                         /* Adjust for extra allocation */
 903                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 904                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 905                 }
 906
 907                 page_area->x = x;
 908                 page_area->y = y;
 909         }
 910
 911         return TRUE;
 912 }
 913
 914 static void
 915 view_point_to_doc_point (EvView *view,
 916                          GdkPoint *view_point,
 917                          GdkRectangle *page_area,
 918                          double  *doc_point_x,
 919                          double  *doc_point_y)
 920 {
 921         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 922         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 923 }
 924
 925 static void
 926 view_rect_to_doc_rect (EvView *view,
 927                        GdkRectangle *view_rect,
 928                        GdkRectangle *page_area,
 929                        EvRectangle  *doc_rect)
 930 {
 931         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 932         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 933         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 934         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 935 }
 936
 937 static gboolean
 938 doc_point_to_view_point (EvView       *view,
 939                          int           page,
 940                          EvPoint      *doc_point,
 941                          GdkPoint     *view_point)
 942 {
 943         GdkRectangle page_area;
 944         GtkBorder border;
 945         double x, y, view_x, view_y;
 946         int width, height;
 947
 948         ev_page_cache_get_size (view->page_cache, page,
 949                                 view->rotation,
 950                                 1.0,
 951                                 &width, &height);
 952
 953         if (view->rotation == 0) {
 954                 x = doc_point->x;
 955                 y = doc_point->y;
 956         } else if (view->rotation == 90) {
 957                 x = width - doc_point->y;
 958                 y = doc_point->x;
 959         } else if (view->rotation == 180) {
 960                 x = width - doc_point->x;
 961                 y = height - doc_point->y;
 962         } else if (view->rotation == 270) {
 963                 x = doc_point->y;
 964                 y = height - doc_point->x;
 965         } else {
 966                 g_assert_not_reached ();
 967         }
 968
 969         get_page_extents (view, page, &page_area, &border);
 970
 971         view_x = x * view->scale;
 972         view_y = y * view->scale;
 973         view_point->x = view_x + page_area.x;
 974         view_point->y = view_y + page_area.y;
 975
 976         return (view_x > 0 && view_x <= page_area.width &&
 977                 view_y > 0 && view_y <= page_area.height);
 978 }
 979
 980 static void
 981 doc_rect_to_view_rect (EvView       *view,
 982                        int           page,
 983                        EvRectangle  *doc_rect,
 984                        GdkRectangle *view_rect)
 985 {
 986         GdkRectangle page_area;
 987         GtkBorder border;
 988         double x, y, w, h;
 989         int width, height;
 990
 991         ev_page_cache_get_size (view->page_cache, page,
 992                                 view->rotation,
 993                                 1.0,
 994                                 &width, &height);
 995
 996         if (view->rotation == 0) {
 997                 x = doc_rect->x1;
 998                 y = doc_rect->y1;
 999                 w = doc_rect->x2 - doc_rect->x1;
1000                 h = doc_rect->y2 - doc_rect->y1;
1001         } else if (view->rotation == 90) {
1002                 x = width - doc_rect->y2;
1003                 y = doc_rect->x1;
1004                 w = doc_rect->y2 - doc_rect->y1;
1005                 h = doc_rect->x2 - doc_rect->x1;
1006         } else if (view->rotation == 180) {
1007                 x = width - doc_rect->x2;
1008                 y = height - doc_rect->y2;
1009                 w = doc_rect->x2 - doc_rect->x1;
1010                 h = doc_rect->y2 - doc_rect->y1;
1011         } else if (view->rotation == 270) {
1012                 x = doc_rect->y1;
1013                 y = height - doc_rect->x2;
1014                 w = doc_rect->y2 - doc_rect->y1;
1015                 h = doc_rect->x2 - doc_rect->x1;
1016         } else {
1017                 g_assert_not_reached ();
1018         }
1019
1020         get_page_extents (view, page, &page_area, &border);
1021
1022         view_rect->x = x * view->scale + page_area.x;
1023         view_rect->y = y * view->scale + page_area.y;
1024         view_rect->width = w * view->scale;
1025         view_rect->height = h * view->scale;
1026 }
1027
1028 static void
1029 find_page_at_location (EvView  *view,
1030                        gdouble  x,
1031                        gdouble  y,
1032                        gint    *page,
1033                        gint    *x_offset,
1034                        gint    *y_offset)
1035 {
1036         int i;
1037
1038         if (view->document == NULL)
1039                 return;
1040
1041         g_assert (page);
1042         g_assert (x_offset);
1043         g_assert (y_offset);
1044
1045         for (i = view->start_page; i <= view->end_page; i++) {
1046                 GdkRectangle page_area;
1047                 GtkBorder border;
1048
1049                 if (! get_page_extents (view, i, &page_area, &border))
1050                         continue;
1051
1052                 if ((x >= page_area.x + border.left) &&
1053                     (x < page_area.x + page_area.width - border.right) &&
1054                     (y >= page_area.y + border.top) &&
1055                     (y < page_area.y + page_area.height - border.bottom)) {
1056                         *page = i;
1057                         *x_offset = x - (page_area.x + border.left);
1058                         *y_offset = y - (page_area.y + border.top);
1059                         return;
1060                 }
1061         }
1062
1063         *page = -1;
1064 }
1065
1066 static gboolean
1067 location_in_text (EvView  *view,
1068                   gdouble  x,
1069                   gdouble  y)
1070 {
1071         GdkRegion *region;
1072         gint page = -1;
1073         gint x_offset = 0, y_offset = 0;
1074
1075         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1076
1077         if (page == -1)
1078                 return FALSE;
1079
1080         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1081
1082         if (region)
1083                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1084         else
1085                 return FALSE;
1086 }
1087
1088 static int
1089 ev_view_get_width (EvView *view)
1090 {
1091         return GTK_WIDGET (view)->allocation.width;
1092 }
1093
1094 static int
1095 ev_view_get_height (EvView *view)
1096 {
1097         return GTK_WIDGET (view)->allocation.height;
1098 }
1099
1100 /*** Hyperref ***/
1101 static EvLink *
1102 get_link_at_location (EvView  *view,
1103                       gdouble  x,
1104                       gdouble  y)
1105 {
1106         gint page = -1;
1107         gint x_offset = 0, y_offset = 0;
1108         GList *link_mapping;
1109
1110         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1111
1112         if (page == -1)
1113                 return NULL;
1114
1115         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1116
1117         if (link_mapping)
1118                 return ev_link_mapping_find (link_mapping, x_offset / view->scale, y_offset / view->scale);
1119         else
1120                 return NULL;
1121 }
1122
1123 static void
1124 goto_fitr_link (EvView *view, EvLink *link)
1125 {
1126         GdkPoint view_point;
1127         EvPoint doc_point;
1128         int doc_width, doc_height, page;
1129         double zoom;
1130
1131         page = ev_link_get_page (link);
1132         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1133
1134         doc_point.x = ev_link_get_left (link);
1135         doc_point.y = ev_link_get_top (link);
1136
1137         zoom = zoom_for_size_best_fit (ev_link_get_right (link) - ev_link_get_left (link),
1138                                        ev_link_get_top (link) - ev_link_get_bottom (link),
1139                                        ev_view_get_width (view),
1140                                        ev_view_get_height (view), 0, 0);
1141
1142         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1143         ev_view_set_zoom (view, zoom, FALSE);
1144         ev_page_cache_set_current_page (view->page_cache, page);
1145
1146         if (doc_point_to_view_point (view, page, &doc_point, &view_point)) {
1147                 gtk_adjustment_set_value (view->hadjustment, view_point.x);
1148                 gtk_adjustment_set_value (view->vadjustment, view_point.y);
1149         }
1150 }
1151
1152 static void
1153 goto_fitv_link (EvView *view, EvLink *link)
1154 {
1155         GdkPoint view_point;
1156         EvPoint doc_point;
1157         int doc_width, doc_height, page;
1158         double zoom;
1159
1160         page = ev_link_get_page (link);
1161         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1162
1163         doc_point.x = ev_link_get_left (link);
1164         doc_point.y = 0;
1165
1166         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1167                                          ev_view_get_width (view),
1168                                          ev_view_get_height (view), 0);
1169
1170         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1171         ev_view_set_zoom (view, zoom, FALSE);
1172         ev_page_cache_set_current_page (view->page_cache, page);
1173
1174         if (doc_point_to_view_point (view, page, &doc_point, &view_point)) {
1175                 gtk_adjustment_set_value (view->hadjustment, view_point.x);
1176         }
1177 }
1178
1179 static void
1180 goto_fith_link (EvView *view, EvLink *link)
1181 {
1182         GdkPoint view_point;
1183         EvPoint doc_point;
1184         int doc_width, doc_height, page;
1185         double zoom;
1186
1187         page = ev_link_get_page (link);
1188         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1189
1190         doc_point.x = 0;
1191         doc_point.y = doc_height - ev_link_get_top (link);
1192
1193         zoom = zoom_for_size_fit_width (doc_width, ev_link_get_top (link),
1194                                         ev_view_get_width (view),
1195                                         ev_view_get_height (view), 0);
1196
1197         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1198         ev_view_set_zoom (view, zoom, FALSE);
1199
1200         if (doc_point_to_view_point (view, page, &doc_point, &view_point)) {
1201                 gtk_adjustment_set_value (view->vadjustment, view_point.y);
1202         } else {
1203                 ev_page_cache_set_current_page (view->page_cache, page);
1204         }
1205 }
1206
1207 static void
1208 goto_fit_link (EvView *view, EvLink *link)
1209 {
1210         double zoom;
1211         int doc_width, doc_height;
1212         int page;
1213
1214         page = ev_link_get_page (link);
1215         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height);
1216
1217         zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view),
1218                                        ev_view_get_height (view), 0, 0);
1219
1220         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1221         ev_view_set_zoom (view, zoom, FALSE);
1222         ev_page_cache_set_current_page (view->page_cache, page);
1223 }
1224
1225 static void
1226 goto_xyz_link (EvView *view, EvLink *link)
1227 {
1228         GdkPoint view_point;
1229         EvPoint doc_point;
1230         int height, page;
1231         double zoom;
1232
1233         zoom = ev_link_get_zoom (link);
1234         page = ev_link_get_page (link);
1235         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, NULL, &height);
1236
1237         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1238         if (zoom != 0) {
1239                 ev_view_set_zoom (view, zoom, FALSE);
1240         }
1241
1242         doc_point.x = ev_link_get_left (link);
1243         doc_point.y = height - ev_link_get_top (link);
1244
1245         if (doc_point_to_view_point (view, page, &doc_point, &view_point)) {
1246                 gtk_adjustment_set_value (view->hadjustment, view_point.x);
1247                 gtk_adjustment_set_value (view->vadjustment, view_point.y);
1248         } else {
1249                 ev_page_cache_set_current_page (view->page_cache, page);
1250         }
1251 }
1252
1253 void
1254 ev_view_goto_link (EvView *view, EvLink *link)
1255 {
1256         EvLinkType type;
1257         int page;
1258
1259         type = ev_link_get_link_type (link);
1260
1261         switch (type) {
1262                 case EV_LINK_TYPE_TITLE:
1263                         break;
1264                 case EV_LINK_TYPE_PAGE:
1265                         page = ev_link_get_page (link);
1266                         ev_page_cache_set_current_page (view->page_cache, page);
1267                         break;
1268                 case EV_LINK_TYPE_PAGE_FIT:
1269                         goto_fit_link (view, link);
1270                         break;
1271                 case EV_LINK_TYPE_PAGE_FITH:
1272                         goto_fith_link (view, link);
1273                         break;
1274                 case EV_LINK_TYPE_PAGE_FITV:
1275                         goto_fitv_link (view, link);
1276                         break;
1277                 case EV_LINK_TYPE_PAGE_FITR:
1278                         goto_fitr_link (view, link);
1279                         break;
1280                 case EV_LINK_TYPE_PAGE_XYZ:
1281                         goto_xyz_link (view, link);
1282                         break;
1283                 case EV_LINK_TYPE_EXTERNAL_URI:
1284                 case EV_LINK_TYPE_LAUNCH:
1285                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, link);
1286                         break;
1287         }
1288 }
1289
1290 static char *
1291 tip_from_link (EvView *view, EvLink *link)
1292 {
1293         EvLinkType type;
1294         char *msg = NULL;
1295         char *page_label;
1296
1297         type = ev_link_get_link_type (link);
1298
1299         switch (type) {
1300                 case EV_LINK_TYPE_TITLE:
1301                         if (ev_link_get_title (link))
1302                                 msg = g_strdup (ev_link_get_title (link));
1303                         break;
1304                 case EV_LINK_TYPE_PAGE:
1305                 case EV_LINK_TYPE_PAGE_XYZ:
1306                         page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link));
1307                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1308                         g_free (page_label);
1309                         break;
1310                 case EV_LINK_TYPE_EXTERNAL_URI:
1311                         msg = g_strdup (ev_link_get_uri (link));
1312                         break;
1313                 default:
1314                         break;
1315         }
1316
1317         return msg;
1318 }
1319
1320 static void
1321 handle_link_over_xy (EvView *view, gint x, gint y)
1322 {
1323         EvLink *link;
1324
1325         link = get_link_at_location (view, x + view->scroll_x, y + view->scroll_y);
1326
1327         if (view->link_tooltip == NULL) {
1328                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1329         }
1330
1331         if (view->hovered_link != link) {
1332                 view->hovered_link = link;
1333                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1334         }
1335
1336         if (link) {
1337                 char *msg = tip_from_link (view, link);
1338
1339                 ev_tooltip_set_position (EV_TOOLTIP (view->link_tooltip), x, y);
1340                 ev_tooltip_set_text (EV_TOOLTIP (view->link_tooltip), msg);
1341                 ev_tooltip_activate (EV_TOOLTIP (view->link_tooltip));
1342                 g_free (msg);
1343
1344                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1345         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1346                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1347         } else {
1348                 ev_view_set_status (view, NULL);
1349                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1350                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1351                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1352         }
1353         return;
1354 }
1355
1356 /*** GtkWidget implementation ***/
1357
1358 static void
1359 ev_view_size_request_continuous_dual_page (EvView         *view,
1360                                            GtkRequisition *requisition)
1361 {
1362         int max_width;
1363         gint n_pages;
1364         GtkBorder border;
1365
1366         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1367                                      view->scale, &max_width);
1368         compute_border (view, max_width, max_width, &border);
1369
1370         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1371
1372         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1373         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1374
1375         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1376                 requisition->width = 1;
1377         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1378                 requisition->width = 1;
1379                 /* FIXME: This could actually be set on one page docs or docs
1380                  * with a strange aspect ratio. */
1381                 /* requisition->height = 1;*/
1382         }
1383 }
1384
1385 static void
1386 ev_view_size_request_continuous (EvView         *view,
1387                                  GtkRequisition *requisition)
1388 {
1389         int max_width;
1390         int n_pages;
1391         GtkBorder border;
1392
1393
1394         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1395                                      view->scale, &max_width);
1396         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1397         compute_border (view, max_width, max_width, &border);
1398
1399         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1400         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1401
1402         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1403                 requisition->width = 1;
1404         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1405                 requisition->width = 1;
1406                 /* FIXME: This could actually be set on one page docs or docs
1407                  * with a strange aspect ratio. */
1408                 /* requisition->height = 1;*/
1409         }
1410 }
1411
1412 static void
1413 ev_view_size_request_dual_page (EvView         *view,
1414                                 GtkRequisition *requisition)
1415 {
1416         GtkBorder border;
1417         gint width, height;
1418
1419         /* Find the largest of the two. */
1420         ev_page_cache_get_size (view->page_cache,
1421                                 view->current_page,
1422                                 view->rotation,
1423                                 view->scale,
1424                                 &width, &height);
1425         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1426                 gint width_2, height_2;
1427                 ev_page_cache_get_size (view->page_cache,
1428                                         view->current_page + 1,
1429                                         view->rotation,
1430                                         view->scale,
1431                                         &width_2, &height_2);
1432                 if (width_2 > width) {
1433                         width = width_2;
1434                         height = height_2;
1435                 }
1436         }
1437         compute_border (view, width, height, &border);
1438
1439         requisition->width = ((width + border.left + border.right) * 2) +
1440                 (view->spacing * 3);
1441         requisition->height = (height + border.top + border.bottom) +
1442                 (view->spacing * 2);
1443
1444         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1445                 requisition->width = 1;
1446         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1447                 requisition->width = 1;
1448                 requisition->height = 1;
1449         }
1450 }
1451
1452 static void
1453 ev_view_size_request_single_page (EvView         *view,
1454                                   GtkRequisition *requisition)
1455 {
1456         GtkBorder border;
1457         gint width, height;
1458
1459         ev_page_cache_get_size (view->page_cache,
1460                                 view->current_page,
1461                                 view->rotation,
1462                                 view->scale,
1463                                 &width, &height);
1464         compute_border (view, width, height, &border);
1465
1466         requisition->width = width + border.left + border.right + (2 * view->spacing);
1467         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1468
1469         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1470                 requisition->width = 1;
1471                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1472         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1473                 requisition->width = 1;
1474                 requisition->height = 1;
1475         }
1476 }
1477
1478 static void
1479 ev_view_size_request (GtkWidget      *widget,
1480                       GtkRequisition *requisition)
1481 {
1482         EvView *view = EV_VIEW (widget);
1483
1484         if (view->document == NULL) {
1485                 requisition->width = 1;
1486                 requisition->height = 1;
1487                 return;
1488         }
1489
1490         if (view->presentation) {
1491                 requisition->width = 1;
1492                 requisition->height = 1;
1493                 return;
1494         }
1495
1496         if (view->continuous && view->dual_page)
1497                 ev_view_size_request_continuous_dual_page (view, requisition);
1498         else if (view->continuous)
1499                 ev_view_size_request_continuous (view, requisition);
1500         else if (view->dual_page)
1501                 ev_view_size_request_dual_page (view, requisition);
1502         else
1503                 ev_view_size_request_single_page (view, requisition);
1504 }
1505
1506 static void
1507 ev_view_size_allocate (GtkWidget      *widget,
1508                        GtkAllocation  *allocation)
1509 {
1510         EvView *view = EV_VIEW (widget);
1511
1512         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1513             view->sizing_mode == EV_SIZING_BEST_FIT) {
1514
1515                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1516
1517                 ev_view_size_request (widget, &widget->requisition);
1518         }
1519
1520         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1521         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1522
1523         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1524         view->pending_resize = FALSE;
1525
1526         if (view->document)
1527                 view_update_range_and_current_page (view);
1528
1529         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1530 }
1531
1532 static void
1533 ev_view_realize (GtkWidget *widget)
1534 {
1535         EvView *view = EV_VIEW (widget);
1536         GdkWindowAttr attributes;
1537
1538         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1539
1540
1541         attributes.window_type = GDK_WINDOW_CHILD;
1542         attributes.wclass = GDK_INPUT_OUTPUT;
1543         attributes.visual = gtk_widget_get_visual (widget);
1544         attributes.colormap = gtk_widget_get_colormap (widget);
1545
1546         attributes.x = widget->allocation.x;
1547         attributes.y = widget->allocation.y;
1548         attributes.width = widget->allocation.width;
1549         attributes.height = widget->allocation.height;
1550         attributes.event_mask = GDK_EXPOSURE_MASK |
1551                                 GDK_BUTTON_PRESS_MASK |
1552                                 GDK_BUTTON_RELEASE_MASK |
1553                                 GDK_SCROLL_MASK |
1554                                 GDK_KEY_PRESS_MASK |
1555                                 GDK_POINTER_MOTION_MASK |
1556                                 GDK_ENTER_NOTIFY_MASK |
1557                                 GDK_LEAVE_NOTIFY_MASK;
1558
1559         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1560                                          &attributes,
1561                                          GDK_WA_X | GDK_WA_Y |
1562                                          GDK_WA_COLORMAP |
1563                                          GDK_WA_VISUAL);
1564         gdk_window_set_user_data (widget->window, widget);
1565         widget->style = gtk_style_attach (widget->style, widget->window);
1566
1567         if (view->presentation)
1568                 gdk_window_set_background (widget->window, &widget->style->black);
1569         else
1570                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1571 }
1572
1573 static gboolean
1574 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1575 {
1576         EvView *view = EV_VIEW (widget);
1577         guint state;
1578
1579         state = event->state & gtk_accelerator_get_default_mod_mask ();
1580
1581         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1582                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1583
1584                 if (event->direction == GDK_SCROLL_UP ||
1585                     event->direction == GDK_SCROLL_LEFT) {
1586                         if (ev_view_can_zoom_in (view)) {
1587                                 ev_view_zoom_in (view);
1588                         }
1589                 } else {
1590                         if (ev_view_can_zoom_out (view)) {
1591                                 ev_view_zoom_out (view);
1592                         }
1593                 }
1594
1595                 return TRUE;
1596         }
1597
1598         /* Shift+Wheel scrolls the in the perpendicular direction */
1599         if (state & GDK_SHIFT_MASK) {
1600                 if (event->direction == GDK_SCROLL_UP)
1601                         event->direction = GDK_SCROLL_LEFT;
1602                 if (event->direction == GDK_SCROLL_LEFT)
1603                         event->direction = GDK_SCROLL_UP;
1604                 if (event->direction == GDK_SCROLL_DOWN)
1605                         event->direction = GDK_SCROLL_RIGHT;
1606                 if (event->direction == GDK_SCROLL_RIGHT)
1607                         event->direction = GDK_SCROLL_DOWN;
1608
1609                 event->state &= ~GDK_SHIFT_MASK;
1610                 state &= ~GDK_SHIFT_MASK;
1611         }
1612
1613         if (state == 0 && view->presentation) {
1614                 switch (event->direction) {
1615                 case GDK_SCROLL_DOWN:
1616                 case GDK_SCROLL_RIGHT:
1617                         ev_view_next_page (view);
1618                         break;
1619                 case GDK_SCROLL_UP:
1620                 case GDK_SCROLL_LEFT:
1621                         ev_view_previous_page (view);
1622                         break;
1623                 }
1624
1625                 return TRUE;
1626         }
1627
1628         return FALSE;
1629 }
1630
1631 static EvViewSelection *
1632 find_selection_for_page (EvView *view,
1633                          gint    page)
1634 {
1635         GList *list;
1636
1637         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1638                 EvViewSelection *selection;
1639
1640                 selection = (EvViewSelection *) list->data;
1641
1642                 if (selection->page == page)
1643                         return selection;
1644         }
1645
1646         return NULL;
1647 }
1648
1649 static gboolean
1650 ev_view_expose_event (GtkWidget      *widget,
1651                       GdkEventExpose *event)
1652 {
1653         EvView *view = EV_VIEW (widget);
1654         int i;
1655
1656         if (view->document == NULL)
1657                 return FALSE;
1658
1659         for (i = view->start_page; i <= view->end_page; i++) {
1660                 GdkRectangle page_area;
1661                 GtkBorder border;
1662
1663                 if (!get_page_extents (view, i, &page_area, &border))
1664                         continue;
1665
1666                 page_area.x -= view->scroll_x;
1667                 page_area.y -= view->scroll_y;
1668
1669                 draw_one_page (view, i, &page_area, &border, &(event->area));
1670
1671                 if (EV_IS_DOCUMENT_FIND (view->document))
1672                         highlight_find_results (view, i);
1673         }
1674
1675         return FALSE;
1676 }
1677
1678 static gboolean
1679 ev_view_button_press_event (GtkWidget      *widget,
1680                             GdkEventButton *event)
1681 {
1682         EvView *view = EV_VIEW (widget);
1683
1684         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1685                 gtk_widget_grab_focus (widget);
1686         }
1687
1688         view->pressed_button = event->button;
1689
1690         switch (event->button) {
1691                 case 1:
1692                         if (view->selection_info.selections) {
1693                                 clear_selection (view);
1694                                 gtk_widget_queue_draw (widget);
1695                         }
1696
1697                         view->selection_info.start.x = event->x + view->scroll_x;
1698                         view->selection_info.start.y = event->y + view->scroll_y;
1699                         return TRUE;
1700                 case 2:
1701                         /* use root coordinates as reference point because
1702                          * scrolling changes window relative coordinates */
1703                         view->drag_info.start.x = event->x_root;
1704                         view->drag_info.start.y = event->y_root;
1705                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1706                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1707
1708                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1709
1710                         return TRUE;
1711         }
1712
1713         return FALSE;
1714 }
1715
1716
1717 static gboolean
1718 selection_update_idle_cb (EvView *view)
1719 {
1720         GdkPoint point;
1721         point.x = view->motion_x;
1722         point.y = view->motion_y;
1723         compute_selections (view, &view->selection_info.start, &point);
1724
1725         view->selection_update_id = 0;
1726         return FALSE;
1727 }
1728
1729 static gboolean
1730 ev_view_motion_notify_event (GtkWidget      *widget,
1731                              GdkEventMotion *event)
1732 {
1733         EvView *view = EV_VIEW (widget);
1734
1735         if (!view->document)
1736                 return FALSE;
1737
1738         /* For the Evince 0.4.x release, we limit selection to un-rotated
1739          * documents only.
1740          */
1741         if (view->pressed_button == 1 &&
1742             view->rotation == 0) {
1743                 view->selection_info.in_selection = TRUE;
1744                 view->motion_x = event->x + view->scroll_x;
1745                 view->motion_y = event->y + view->scroll_y;
1746
1747                 /* Queue an idle to handle the motion.  We do this because
1748                  * handling any selection events in the motion could be slower
1749                  * than new motion events reach us.  We always put it in the
1750                  * idle to make sure we catch up and don't visibly lag the
1751                  * mouse. */
1752                 if (! view->selection_update_id)
1753                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
1754
1755                 return TRUE;
1756         } else if (view->pressed_button == 2) {
1757                 if (!view->drag_info.in_drag) {
1758                         gboolean start;
1759
1760                         start = gtk_drag_check_threshold (widget,
1761                                                           view->drag_info.start.x,
1762                                                           view->drag_info.start.y,
1763                                                           event->x_root,
1764                                                           event->y_root);
1765                         view->drag_info.in_drag = start;
1766                 }
1767
1768                 if (view->drag_info.in_drag) {
1769                         int dx, dy;
1770                         gdouble dhadj_value, dvadj_value;
1771
1772                         dx = event->x_root - view->drag_info.start.x;
1773                         dy = event->y_root - view->drag_info.start.y;
1774
1775                         dhadj_value = view->hadjustment->page_size *
1776                                       (gdouble)dx / widget->allocation.width;
1777                         dvadj_value = view->vadjustment->page_size *
1778                                       (gdouble)dy / widget->allocation.height;
1779
1780                         /* clamp scrolling to visible area */
1781                         gtk_adjustment_set_value (view->hadjustment,
1782                                                   MIN(view->drag_info.hadj - dhadj_value,
1783                                                       view->hadjustment->upper -
1784                                                       view->hadjustment->page_size));
1785                         gtk_adjustment_set_value (view->vadjustment,
1786                                                   MIN(view->drag_info.vadj - dvadj_value,
1787                                                       view->vadjustment->upper -
1788                                                       view->vadjustment->page_size));
1789
1790                         return TRUE;
1791                 }
1792         /* For the Evince 0.4.x release, we limit links to un-rotated documents
1793          * only.
1794          */
1795         } else if (view->pressed_button <= 0 &&
1796                    view->rotation == 0) {
1797                 handle_link_over_xy (view, event->x, event->y);
1798                 return TRUE;
1799         }
1800
1801         return FALSE;
1802 }
1803
1804 static gboolean
1805 ev_view_button_release_event (GtkWidget      *widget,
1806                               GdkEventButton *event)
1807 {
1808         EvView *view = EV_VIEW (widget);
1809         EvLink *link;
1810
1811         if (view->pressed_button == 2) {
1812                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1813         }
1814
1815         if (view->document) {
1816                 link = get_link_at_location (view, event->x + view->scroll_x,
1817                                              event->y + view->scroll_y);
1818         } else {
1819                 link = NULL;
1820         }
1821
1822         view->pressed_button = -1;
1823         view->drag_info.in_drag = FALSE;
1824
1825         if (view->selection_info.selections) {
1826                 ev_view_update_primary_selection (view);
1827         } else if (link) {
1828                 ev_view_goto_link (view, link);
1829         } else if (view->presentation) {
1830                 switch (event->button) {
1831                 case 1:
1832                         ev_view_next_page (view);
1833                         return TRUE;
1834                 case 3:
1835                         ev_view_previous_page (view);
1836                         return TRUE;
1837                 }
1838         }
1839
1840         return FALSE;
1841 }
1842
1843 static gint
1844 ev_view_focus_in (GtkWidget     *widget,
1845                   GdkEventFocus *event)
1846 {
1847         if (EV_VIEW (widget)->pixbuf_cache)
1848                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1849         gtk_widget_queue_draw (widget);
1850
1851         return FALSE;
1852 }
1853
1854 static gint
1855 ev_view_focus_out (GtkWidget     *widget,
1856                      GdkEventFocus *event)
1857 {
1858         if (EV_VIEW (widget)->pixbuf_cache)
1859                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1860         gtk_widget_queue_draw (widget);
1861
1862         return FALSE;
1863 }
1864
1865 static gboolean
1866 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
1867 {
1868         EvView *view = EV_VIEW (widget);
1869
1870         ev_view_set_status (view, NULL);
1871
1872         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1873             view->cursor == EV_VIEW_CURSOR_IBEAM)
1874                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1875
1876         if (view->link_tooltip) {
1877                 view->hovered_link = NULL;
1878                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1879         }
1880
1881         return FALSE;
1882 }
1883
1884 static gboolean
1885 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
1886 {
1887         EvView *view = EV_VIEW (widget);
1888
1889         handle_link_over_xy (view, event->x, event->y);
1890
1891         return FALSE;
1892 }
1893
1894 static void
1895 ev_view_style_set (GtkWidget *widget,
1896                    GtkStyle  *old_style)
1897 {
1898         if (EV_VIEW (widget)->pixbuf_cache)
1899                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1900
1901         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
1902 }
1903
1904
1905 /*** Drawing ***/
1906
1907 static guint32
1908 ev_gdk_color_to_rgb (const GdkColor *color)
1909 {
1910   guint32 result;
1911   result = (0xff0000 | (color->red & 0xff00));
1912   result <<= 8;
1913   result |= ((color->green & 0xff00) | (color->blue >> 8));
1914   return result;
1915 }
1916
1917 static void
1918 draw_rubberband (GtkWidget *widget, GdkWindow *window,
1919                  const GdkRectangle *rect, guchar alpha)
1920 {
1921         GdkGC *gc;
1922         GdkPixbuf *pixbuf;
1923         GdkColor *fill_color_gdk;
1924         guint fill_color;
1925
1926         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
1927         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
1928
1929         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
1930                                  rect->width, rect->height);
1931         gdk_pixbuf_fill (pixbuf, fill_color);
1932
1933         gdk_draw_pixbuf (window, NULL, pixbuf,
1934                          0, 0,
1935                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1936                          rect->width, rect->height,
1937                          GDK_RGB_DITHER_NONE,
1938                          0, 0);
1939
1940         g_object_unref (pixbuf);
1941
1942         gc = gdk_gc_new (window);
1943         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
1944         gdk_draw_rectangle (window, gc, FALSE,
1945                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1946                             rect->width - 1,
1947                             rect->height - 1);
1948         g_object_unref (gc);
1949
1950         gdk_color_free (fill_color_gdk);
1951 }
1952
1953
1954 static void
1955 highlight_find_results (EvView *view, int page)
1956 {
1957         EvDocumentFind *find;
1958         int i, results = 0;
1959
1960         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
1961
1962         find = EV_DOCUMENT_FIND (view->document);
1963
1964         results = ev_document_find_get_n_results (find, page);
1965
1966         for (i = 0; i < results; i++) {
1967                 EvRectangle rectangle;
1968                 GdkRectangle view_rectangle;
1969                 guchar alpha;
1970
1971                 if (i == view->find_result && page == view->find_page) {
1972                         alpha = 0x90;
1973                 } else {
1974                         alpha = 0x20;
1975                 }
1976
1977                 ev_document_find_get_result (find, page, i, &rectangle);
1978                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
1979                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
1980                                  &view_rectangle, alpha);
1981         }
1982 }
1983
1984 static void
1985 draw_loading_text (EvView       *view,
1986                    GdkRectangle *page_area,
1987                    GdkRectangle *expose_area)
1988 {
1989         PangoLayout *layout;
1990         PangoFontDescription *font_desc;
1991         PangoRectangle logical_rect;
1992         double real_scale;
1993         int target_width;
1994
1995         const char *loading_text = _("Loading...");
1996
1997         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
1998
1999         font_desc = pango_font_description_new ();
2000
2001
2002         /* We set the font to be 10 points, get the size, and scale appropriately */
2003         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
2004         pango_layout_set_font_description (layout, font_desc);
2005         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2006
2007         /* Make sure we fit the middle of the page */
2008         target_width = MAX (page_area->width / 2, 1);
2009         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
2010         pango_font_description_set_size (font_desc, (int)real_scale);
2011         pango_layout_set_font_description (layout, font_desc);
2012         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2013
2014         gtk_paint_layout (GTK_WIDGET (view)->style,
2015                           GTK_WIDGET (view)->window,
2016                           GTK_WIDGET_STATE (view),
2017                           FALSE,
2018                           page_area,
2019                           GTK_WIDGET (view),
2020                           NULL,
2021                           page_area->x + (target_width/2),
2022                           page_area->y + (page_area->height - logical_rect.height) / 2,
2023                           layout);
2024
2025         pango_font_description_free (font_desc);
2026         g_object_unref (layout);
2027 }
2028
2029 static void
2030 draw_one_page (EvView          *view,
2031                gint             page,
2032                GdkRectangle    *page_area,
2033                GtkBorder       *border,
2034                GdkRectangle    *expose_area)
2035 {
2036         gint width, height;
2037         GdkPixbuf *current_pixbuf;
2038         GdkRectangle overlap;
2039         GdkRectangle real_page_area;
2040         EvViewSelection *selection;
2041
2042         g_assert (view->document);
2043         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
2044                 return;
2045
2046         selection = find_selection_for_page (view, page);
2047         ev_page_cache_get_size (view->page_cache,
2048                                 page, view->rotation,
2049                                 view->scale,
2050                                 &width, &height);
2051         /* Render the document itself */
2052         real_page_area = *page_area;
2053
2054         real_page_area.x += border->left;
2055         real_page_area.y += border->top;
2056         real_page_area.width -= (border->left + border->right);
2057         real_page_area.height -= (border->top + border->bottom);
2058
2059         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
2060                                          GTK_WIDGET (view),
2061                                          page_area, border);
2062
2063         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
2064                 GdkPixbuf *selection_pixbuf = NULL;
2065                 GdkPixbuf *scaled_image;
2066                 GdkPixbuf *scaled_selection;
2067
2068                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
2069
2070                 /* Get the selection pixbuf iff we have something to draw */
2071                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
2072                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
2073                                                                                  page,
2074                                                                                  view->scale,
2075                                                                                  NULL);
2076
2077                 if (current_pixbuf == NULL)
2078                         scaled_image = NULL;
2079                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
2080                          height == gdk_pixbuf_get_height (current_pixbuf))
2081                         scaled_image = g_object_ref (current_pixbuf);
2082                 else
2083                         /* FIXME: We don't want to scale the whole area, just the right
2084                          * area of it */
2085                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
2086                                                                 width, height,
2087                                                                 GDK_INTERP_NEAREST);
2088
2089                 if (selection_pixbuf == NULL)
2090                         scaled_selection = NULL;
2091                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
2092                          height == gdk_pixbuf_get_height (selection_pixbuf))
2093                         scaled_selection = g_object_ref (selection_pixbuf);
2094                 else
2095                         /* FIXME: We don't want to scale the whole area, just the right
2096                          * area of it */
2097                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
2098                                                                     width, height,
2099                                                                     GDK_INTERP_NEAREST);
2100
2101                 if (scaled_image) {
2102                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2103                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2104                                          scaled_image,
2105                                          overlap.x - real_page_area.x,
2106                                          overlap.y - real_page_area.y,
2107                                          overlap.x, overlap.y,
2108                                          overlap.width, overlap.height,
2109                                          GDK_RGB_DITHER_NORMAL,
2110                                          0, 0);
2111                         g_object_unref (scaled_image);
2112                 } else {
2113                         draw_loading_text (view,
2114                                            &real_page_area,
2115                                            expose_area);
2116                 }
2117
2118                 if (scaled_selection) {
2119                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2120                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2121                                          scaled_selection,
2122                                          overlap.x - real_page_area.x,
2123                                          overlap.y - real_page_area.y,
2124                                          overlap.x, overlap.y,
2125                                          overlap.width, overlap.height,
2126                                          GDK_RGB_DITHER_NORMAL,
2127                                          0, 0);
2128                         g_object_unref (scaled_selection);
2129                 }
2130         }
2131 }
2132
2133 /*** GObject functions ***/
2134
2135 static void
2136 ev_view_finalize (GObject *object)
2137 {
2138         EvView *view = EV_VIEW (object);
2139
2140         LOG ("Finalize");
2141
2142         g_free (view->status);
2143         g_free (view->find_status);
2144
2145         clear_selection (view);
2146
2147         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2148 }
2149
2150 static void
2151 ev_view_destroy (GtkObject *object)
2152 {
2153         EvView *view = EV_VIEW (object);
2154
2155         if (view->document) {
2156                 g_object_unref (view->document);
2157                 view->document = NULL;
2158         }
2159
2160         if (view->pixbuf_cache) {
2161                 g_object_unref (view->pixbuf_cache);
2162                 view->pixbuf_cache = NULL;
2163         }
2164
2165         if (view->link_tooltip) {
2166                 gtk_widget_destroy (view->link_tooltip);
2167         }
2168
2169         ev_view_set_scroll_adjustments (view, NULL, NULL);
2170
2171         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
2172 }
2173
2174 static void
2175 ev_view_set_property (GObject      *object,
2176                       guint         prop_id,
2177                       const GValue *value,
2178                       GParamSpec   *pspec)
2179 {
2180         EvView *view = EV_VIEW (object);
2181
2182         switch (prop_id)
2183         {
2184         case PROP_CONTINUOUS:
2185                 ev_view_set_continuous (view, g_value_get_boolean (value));
2186                 break;
2187         case PROP_DUAL_PAGE:
2188                 ev_view_set_dual_page (view, g_value_get_boolean (value));
2189                 break;
2190         case PROP_FULLSCREEN:
2191                 ev_view_set_fullscreen (view, g_value_get_boolean (value));
2192                 break;
2193         case PROP_PRESENTATION:
2194                 ev_view_set_presentation (view, g_value_get_boolean (value));
2195                 break;
2196         case PROP_SIZING_MODE:
2197                 ev_view_set_sizing_mode (view, g_value_get_enum (value));
2198                 break;
2199         case PROP_ZOOM:
2200                 ev_view_set_zoom (view, g_value_get_double (value), FALSE);
2201                 break;
2202         case PROP_ROTATION:
2203                 ev_view_set_rotation (view, g_value_get_int (value));
2204                 break;
2205         default:
2206                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2207         }
2208 }
2209
2210 static void
2211 ev_view_get_property (GObject *object,
2212                       guint prop_id,
2213                       GValue *value,
2214                       GParamSpec *pspec)
2215 {
2216         EvView *view = EV_VIEW (object);
2217
2218         switch (prop_id)
2219         {
2220         case PROP_STATUS:
2221                 g_value_set_string (value, view->status);
2222                 break;
2223         case PROP_FIND_STATUS:
2224                 g_value_set_string (value, view->status);
2225                 break;
2226         case PROP_CONTINUOUS:
2227                 g_value_set_boolean (value, view->continuous);
2228                 break;
2229         case PROP_DUAL_PAGE:
2230                 g_value_set_boolean (value, view->dual_page);
2231                 break;
2232         case PROP_FULLSCREEN:
2233                 g_value_set_boolean (value, view->fullscreen);
2234                 break;
2235         case PROP_PRESENTATION:
2236                 g_value_set_boolean (value, view->presentation);
2237                 break;
2238         case PROP_SIZING_MODE:
2239                 g_value_set_enum (value, view->sizing_mode);
2240                 break;
2241         case PROP_ZOOM:
2242                 g_value_set_double (value, view->scale);
2243                 break;
2244         case PROP_ROTATION:
2245                 g_value_set_int (value, view->rotation);
2246                 break;
2247         default:
2248                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2249         }
2250 }
2251
2252 static void
2253 ev_view_class_init (EvViewClass *class)
2254 {
2255         GObjectClass *object_class = G_OBJECT_CLASS (class);
2256         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
2257         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
2258         GtkBindingSet *binding_set;
2259
2260         object_class->finalize = ev_view_finalize;
2261         object_class->set_property = ev_view_set_property;
2262         object_class->get_property = ev_view_get_property;
2263
2264         widget_class->expose_event = ev_view_expose_event;
2265         widget_class->button_press_event = ev_view_button_press_event;
2266         widget_class->motion_notify_event = ev_view_motion_notify_event;
2267         widget_class->button_release_event = ev_view_button_release_event;
2268         widget_class->focus_in_event = ev_view_focus_in;
2269         widget_class->focus_out_event = ev_view_focus_out;
2270         widget_class->size_request = ev_view_size_request;
2271         widget_class->size_allocate = ev_view_size_allocate;
2272         widget_class->realize = ev_view_realize;
2273         widget_class->scroll_event = ev_view_scroll_event;
2274         widget_class->enter_notify_event = ev_view_enter_notify_event;
2275         widget_class->leave_notify_event = ev_view_leave_notify_event;
2276         widget_class->style_set = ev_view_style_set;
2277         gtk_object_class->destroy = ev_view_destroy;
2278
2279         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
2280         class->binding_activated = ev_view_binding_activated;
2281
2282         widget_class->set_scroll_adjustments_signal =
2283             g_signal_new ("set-scroll-adjustments",
2284                           G_OBJECT_CLASS_TYPE (object_class),
2285                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2286                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
2287                           NULL, NULL,
2288                           ev_marshal_VOID__OBJECT_OBJECT,
2289                           G_TYPE_NONE, 2,
2290                           GTK_TYPE_ADJUSTMENT,
2291                           GTK_TYPE_ADJUSTMENT);
2292
2293         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
2294                          G_TYPE_FROM_CLASS (object_class),
2295                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2296                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
2297                          NULL, NULL,
2298                          ev_marshal_VOID__ENUM_BOOLEAN,
2299                          G_TYPE_NONE, 2,
2300                          GTK_TYPE_SCROLL_TYPE,
2301                          G_TYPE_BOOLEAN);
2302
2303         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
2304                          G_TYPE_FROM_CLASS (object_class),
2305                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2306                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
2307                          NULL, NULL,
2308                          ev_marshal_VOID__VOID,
2309                          G_TYPE_NONE, 0, G_TYPE_NONE);
2310         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
2311                          G_TYPE_FROM_CLASS (object_class),
2312                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2313                          G_STRUCT_OFFSET (EvViewClass, external_link),
2314                          NULL, NULL,
2315                          g_cclosure_marshal_VOID__OBJECT,
2316                          G_TYPE_NONE, 1,
2317                          G_TYPE_OBJECT);
2318
2319         g_object_class_install_property (object_class,
2320                                          PROP_STATUS,
2321                                          g_param_spec_string ("status",
2322                                                               "Status Message",
2323                                                               "The status message",
2324                                                               NULL,
2325                                                               G_PARAM_READABLE));
2326
2327         g_object_class_install_property (object_class,
2328                                          PROP_FIND_STATUS,
2329                                          g_param_spec_string ("find-status",
2330                                                               "Find Status Message",
2331                                                               "The find status message",
2332                                                               NULL,
2333                                                               G_PARAM_READABLE));
2334
2335         g_object_class_install_property (object_class,
2336                                          PROP_CONTINUOUS,
2337                                          g_param_spec_boolean ("continuous",
2338                                                                "Continuous",
2339                                                                "Continuous scrolling mode",
2340                                                                TRUE,
2341                                                                G_PARAM_READWRITE));
2342
2343         g_object_class_install_property (object_class,
2344                                          PROP_DUAL_PAGE,
2345                                          g_param_spec_boolean ("dual-page",
2346                                                                "Dual Page",
2347                                                                "Two pages visible at once",
2348                                                                FALSE,
2349                                                                G_PARAM_READWRITE));
2350         g_object_class_install_property (object_class,
2351                                          PROP_FULLSCREEN,
2352                                          g_param_spec_boolean ("fullscreen",
2353                                                                "Full Screen",
2354                                                                "Draw page in a fullscreen fashion",
2355                                                                FALSE,
2356                                                                G_PARAM_READWRITE));
2357         g_object_class_install_property (object_class,
2358                                          PROP_PRESENTATION,
2359                                          g_param_spec_boolean ("presentation",
2360                                                                "Presentation",
2361                                                                "Draw page in presentation mode",
2362                                                                TRUE,
2363                                                                G_PARAM_READWRITE));
2364
2365         g_object_class_install_property (object_class,
2366                                          PROP_SIZING_MODE,
2367                                          g_param_spec_enum ("sizing-mode",
2368                                                             "Sizing Mode",
2369                                                             "Sizing Mode",
2370                                                             EV_TYPE_SIZING_MODE,
2371                                                             EV_SIZING_FIT_WIDTH,
2372                                                             G_PARAM_READWRITE));
2373
2374         g_object_class_install_property (object_class,
2375                                          PROP_ZOOM,
2376                                          g_param_spec_double ("zoom",
2377                                                               "Zoom factor",
2378                                                                "Zoom factor",
2379                                                                MIN_SCALE,
2380                                                                MAX_SCALE,
2381                                                                1.0,
2382                                                                G_PARAM_READWRITE));
2383         g_object_class_install_property (object_class,
2384                                          PROP_ROTATION,
2385                                          g_param_spec_double ("rotation",
2386                                                               "Rotation",
2387                                                                "Rotation",
2388                                                                0,
2389                                                                360,
2390                                                                0,
2391                                                                G_PARAM_READWRITE));
2392
2393         binding_set = gtk_binding_set_by_class (class);
2394
2395         add_scroll_binding_keypad (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
2396         add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
2397         add_scroll_binding_keypad (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
2398         add_scroll_binding_keypad (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
2399 }
2400
2401 static void
2402 ev_view_init (EvView *view)
2403 {
2404         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
2405
2406         view->spacing = 5;
2407         view->scale = 1.0;
2408         view->current_page = 0;
2409         view->pressed_button = -1;
2410         view->cursor = EV_VIEW_CURSOR_NORMAL;
2411         view->drag_info.in_drag = FALSE;
2412         view->selection_info.in_selection = FALSE;
2413         view->selection_mode = EV_VIEW_SELECTION_TEXT;
2414         view->continuous = TRUE;
2415         view->dual_page = FALSE;
2416         view->presentation = FALSE;
2417         view->fullscreen = FALSE;
2418         view->sizing_mode = EV_SIZING_FIT_WIDTH;
2419         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2420 }
2421
2422 /*** Callbacks ***/
2423
2424 static void
2425 find_changed_cb (EvDocument *document, int page, EvView *view)
2426 {
2427         jump_to_find_page (view, EV_VIEW_FIND_NEXT);
2428         jump_to_find_result (view);
2429         update_find_status_message (view);
2430
2431         if (view->current_page == page)
2432                 gtk_widget_queue_draw (GTK_WIDGET (view));
2433 }
2434
2435 static void
2436 job_finished_cb (EvPixbufCache *pixbuf_cache,
2437                  EvView        *view)
2438 {
2439         gtk_widget_queue_draw (GTK_WIDGET (view));
2440 }
2441
2442 static void
2443 page_changed_cb (EvPageCache *page_cache,
2444                  int          new_page,
2445                  EvView      *view)
2446 {
2447         if (view->current_page != new_page) {
2448
2449                 view->current_page = new_page;
2450                 view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2451                 gtk_widget_queue_resize (GTK_WIDGET (view));
2452
2453                 if (EV_IS_DOCUMENT_FIND (view->document)) {
2454                         view->find_page = new_page;
2455                         view->find_result = 0;
2456                         update_find_status_message (view);
2457                 }
2458         }
2459 }
2460
2461 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
2462                                          EvView *view)
2463 {
2464         int dx = 0, dy = 0;
2465
2466         if (! GTK_WIDGET_REALIZED (view))
2467                 return;
2468
2469         if (view->hadjustment) {
2470                 dx = view->scroll_x - (int) view->hadjustment->value;
2471                 view->scroll_x = (int) view->hadjustment->value;
2472         } else {
2473                 view->scroll_x = 0;
2474         }
2475
2476         if (view->vadjustment) {
2477                 dy = view->scroll_y - (int) view->vadjustment->value;
2478                 view->scroll_y = (int) view->vadjustment->value;
2479         } else {
2480                 view->scroll_y = 0;
2481         }
2482
2483
2484         if (view->pending_resize)
2485                 gtk_widget_queue_draw (GTK_WIDGET (view));
2486         else
2487                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
2488
2489
2490         if (view->document)
2491                 view_update_range_and_current_page (view);
2492 }
2493
2494 GtkWidget*
2495 ev_view_new (void)
2496 {
2497         GtkWidget *view;
2498
2499         view = g_object_new (EV_TYPE_VIEW, NULL);
2500
2501         return view;
2502 }
2503
2504 static void
2505 setup_caches (EvView *view)
2506 {
2507         view->page_cache = ev_page_cache_get (view->document);
2508         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
2509         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
2510         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
2511 }
2512
2513 static void
2514 clear_caches (EvView *view)
2515 {
2516         if (view->pixbuf_cache) {
2517                 g_object_unref (view->pixbuf_cache);
2518                 view->pixbuf_cache = NULL;
2519         }
2520
2521         if (view->page_cache) {
2522                 view->page_cache = NULL;
2523         }
2524 }
2525
2526 void
2527 ev_view_set_document (EvView     *view,
2528                       EvDocument *document)
2529 {
2530         g_return_if_fail (EV_IS_VIEW (view));
2531
2532         if (document != view->document) {
2533                 clear_caches (view);
2534
2535                 if (view->document) {
2536                         g_signal_handlers_disconnect_by_func (view->document,
2537                                                               find_changed_cb,
2538                                                               view);
2539                         g_object_unref (view->document);
2540                         view->page_cache = NULL;
2541
2542                 }
2543
2544                 view->document = document;
2545                 view->find_page = 0;
2546                 view->find_result = 0;
2547
2548                 if (view->document) {
2549                         g_object_ref (view->document);
2550                         if (EV_IS_DOCUMENT_FIND (view->document)) {
2551                                 g_signal_connect (view->document,
2552                                                   "find_changed",
2553                                                   G_CALLBACK (find_changed_cb),
2554                                                   view);
2555                         }
2556
2557                         setup_caches (view);
2558                 }
2559
2560                 gtk_widget_queue_resize (GTK_WIDGET (view));
2561         }
2562 }
2563
2564 /*** Zoom and sizing mode ***/
2565
2566 #define EPSILON 0.0000001
2567 void
2568 ev_view_set_zoom (EvView   *view,
2569                   double    factor,
2570                   gboolean  relative)
2571 {
2572         double scale;
2573
2574         if (relative)
2575                 scale = view->scale * factor;
2576         else
2577                 scale = factor;
2578
2579         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
2580
2581         if (ABS (view->scale - scale) < EPSILON)
2582                 return;
2583
2584         view->scale = scale;
2585         view->pending_resize = TRUE;
2586
2587         gtk_widget_queue_resize (GTK_WIDGET (view));
2588
2589         g_object_notify (G_OBJECT (view), "zoom");
2590 }
2591
2592 double
2593 ev_view_get_zoom (EvView *view)
2594 {
2595         return view->scale;
2596 }
2597
2598 gboolean
2599 ev_view_get_continuous (EvView *view)
2600 {
2601         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2602
2603         return view->continuous;
2604 }
2605
2606 void
2607 ev_view_set_continuous (EvView   *view,
2608                         gboolean  continuous)
2609 {
2610         g_return_if_fail (EV_IS_VIEW (view));
2611
2612         continuous = continuous != FALSE;
2613
2614         if (view->continuous != continuous) {
2615                 view->continuous = continuous;
2616                 view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2617                 gtk_widget_queue_resize (GTK_WIDGET (view));
2618         }
2619
2620         g_object_notify (G_OBJECT (view), "continuous");
2621 }
2622
2623 gboolean
2624 ev_view_get_dual_page (EvView *view)
2625 {
2626         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2627
2628         return view->dual_page;
2629 }
2630
2631 void
2632 ev_view_set_dual_page (EvView   *view,
2633                        gboolean  dual_page)
2634 {
2635         g_return_if_fail (EV_IS_VIEW (view));
2636
2637         dual_page = dual_page != FALSE;
2638
2639         if (view->dual_page == dual_page)
2640                 return;
2641
2642         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2643         view->dual_page = dual_page;
2644         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
2645          * preload_cache_size to be 2 if dual_page is set.
2646          */
2647         gtk_widget_queue_resize (GTK_WIDGET (view));
2648
2649         g_object_notify (G_OBJECT (view), "dual-page");
2650 }
2651
2652 void
2653 ev_view_set_fullscreen (EvView   *view,
2654                          gboolean  fullscreen)
2655 {
2656         g_return_if_fail (EV_IS_VIEW (view));
2657
2658         fullscreen = fullscreen != FALSE;
2659
2660         if (view->fullscreen == fullscreen)
2661                 return;
2662
2663         view->fullscreen = fullscreen;
2664         gtk_widget_queue_resize (GTK_WIDGET (view));
2665
2666         g_object_notify (G_OBJECT (view), "fullscreen");
2667 }
2668
2669 gboolean
2670 ev_view_get_fullscreen (EvView *view)
2671 {
2672         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2673
2674         return view->fullscreen;
2675 }
2676
2677 void
2678 ev_view_set_presentation (EvView   *view,
2679                           gboolean  presentation)
2680 {
2681         g_return_if_fail (EV_IS_VIEW (view));
2682
2683         presentation = presentation != FALSE;
2684
2685         if (view->presentation == presentation)
2686                 return;
2687
2688         view->presentation = presentation;
2689         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2690         gtk_widget_queue_resize (GTK_WIDGET (view));
2691
2692         if (GTK_WIDGET_REALIZED (view)) {
2693                 if (view->presentation)
2694                         gdk_window_set_background (GTK_WIDGET(view)->window,
2695                                                    &GTK_WIDGET (view)->style->black);
2696                 else
2697                         gdk_window_set_background (GTK_WIDGET(view)->window,
2698                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
2699         }
2700
2701
2702         g_object_notify (G_OBJECT (view), "presentation");
2703 }
2704
2705 gboolean
2706 ev_view_get_presentation (EvView *view)
2707 {
2708         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2709
2710         return view->presentation;
2711 }
2712
2713 void
2714 ev_view_set_sizing_mode (EvView       *view,
2715                          EvSizingMode  sizing_mode)
2716 {
2717         g_return_if_fail (EV_IS_VIEW (view));
2718
2719         if (view->sizing_mode == sizing_mode)
2720                 return;
2721
2722         view->sizing_mode = sizing_mode;
2723         gtk_widget_queue_resize (GTK_WIDGET (view));
2724
2725         g_object_notify (G_OBJECT (view), "sizing-mode");
2726 }
2727
2728 EvSizingMode
2729 ev_view_get_sizing_mode (EvView *view)
2730 {
2731         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
2732
2733         return view->sizing_mode;
2734 }
2735
2736 gboolean
2737 ev_view_can_zoom_in (EvView *view)
2738 {
2739         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
2740 }
2741
2742 gboolean
2743 ev_view_can_zoom_out (EvView *view)
2744 {
2745         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
2746 }
2747
2748 void
2749 ev_view_zoom_in (EvView *view)
2750 {
2751         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2752
2753         view->pending_scroll = SCROLL_TO_CENTER;
2754         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
2755 }
2756
2757 void
2758 ev_view_zoom_out (EvView *view)
2759 {
2760         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2761
2762         view->pending_scroll = SCROLL_TO_CENTER;
2763         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
2764 }
2765
2766 void
2767 ev_view_rotate_right (EvView *view)
2768 {
2769         int rotation = view->rotation + 90;
2770
2771         if (rotation >= 360) {
2772                 rotation -= 360;
2773         }
2774
2775         ev_view_set_rotation (view, rotation);
2776 }
2777
2778 void
2779 ev_view_rotate_left (EvView *view)
2780 {
2781         int rotation = view->rotation - 90;
2782
2783         if (rotation < 0) {
2784                 rotation += 360;
2785         }
2786
2787         ev_view_set_rotation (view, rotation);
2788 }
2789
2790 void
2791 ev_view_set_rotation (EvView *view, int rotation)
2792 {
2793         view->rotation = rotation;
2794
2795         if (view->pixbuf_cache) {
2796                 ev_pixbuf_cache_clear (view->pixbuf_cache);
2797                 gtk_widget_queue_resize (GTK_WIDGET (view));
2798         }
2799
2800         if (rotation != 0)
2801                 clear_selection (view);
2802
2803         g_object_notify (G_OBJECT (view), "rotation");
2804 }
2805
2806 int
2807 ev_view_get_rotation (EvView *view)
2808 {
2809         return view->rotation;
2810 }
2811
2812 static double
2813 zoom_for_size_fit_width (int doc_width,
2814                          int doc_height,
2815                          int target_width,
2816                          int target_height,
2817                          int vsb_width)
2818 {
2819         double scale;
2820
2821         scale = (double)target_width / doc_width;
2822
2823         if (doc_height * scale > target_height)
2824                 scale = (double) (target_width - vsb_width) / doc_width;
2825
2826         return scale;
2827 }
2828
2829 static double
2830 zoom_for_size_fit_height (int doc_width,
2831                           int doc_height,
2832                           int target_width,
2833                           int target_height,
2834                           int vsb_height)
2835 {
2836         double scale;
2837
2838         scale = (double)target_height / doc_height;
2839
2840         if (doc_width * scale > target_width)
2841                 scale = (double) (target_height - vsb_height) / doc_height;
2842
2843         return scale;
2844 }
2845
2846 static double
2847 zoom_for_size_best_fit (int doc_width,
2848                         int doc_height,
2849                         int target_width,
2850                         int target_height,
2851                         int vsb_width,
2852                         int hsb_width)
2853 {
2854         double w_scale;
2855         double h_scale;
2856
2857         w_scale = (double)target_width / doc_width;
2858         h_scale = (double)target_height / doc_height;
2859
2860         if (doc_height * w_scale > target_height)
2861                 w_scale = (double) (target_width - vsb_width) / doc_width;
2862         if (doc_width * h_scale > target_width)
2863                 h_scale = (double) (target_height - hsb_width) / doc_height;
2864
2865         return MIN (w_scale, h_scale);
2866 }
2867
2868
2869 static void
2870 ev_view_zoom_for_size_presentation (EvView *view,
2871                                     int     width,
2872                                     int     height)
2873 {
2874         int doc_width, doc_height;
2875         gdouble scale;
2876
2877         ev_page_cache_get_size (view->page_cache,
2878                                 view->current_page,
2879                                 view->rotation,
2880                                 1.0,
2881                                 &doc_width,
2882                                 &doc_height);
2883         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
2884         ev_view_set_zoom (view, scale, FALSE);
2885 }
2886
2887 static void
2888 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
2889                            int     width,
2890                            int     height,
2891                            int     vsb_width,
2892                            int     hsb_height)
2893 {
2894         int doc_width, doc_height;
2895         GtkBorder border;
2896         gdouble scale;
2897
2898         ev_page_cache_get_max_width (view->page_cache,
2899                                      view->rotation,
2900                                      1.0,
2901                                      &doc_width);
2902         ev_page_cache_get_max_height (view->page_cache,
2903                                       view->rotation,
2904                                       1.0,
2905                                       &doc_height);
2906         compute_border (view, doc_width, doc_height, &border);
2907
2908         doc_width = doc_width * 2;
2909         width -= (2 * (border.left + border.right) + 3 * view->spacing);
2910         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2911
2912         /* FIXME: We really need to calculate the overall height here, not the
2913          * page height.  We assume there's always a vertical scrollbar for
2914          * now.  We need to fix this. */
2915         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2916                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2917         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2918                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2919         else
2920                 g_assert_not_reached ();
2921
2922         ev_view_set_zoom (view, scale, FALSE);
2923 }
2924
2925 static void
2926 ev_view_zoom_for_size_continuous (EvView *view,
2927                                   int     width,
2928                                   int     height,
2929                                   int     vsb_width,
2930                                   int     hsb_height)
2931 {
2932         int doc_width, doc_height;
2933         GtkBorder border;
2934         gdouble scale;
2935
2936         ev_page_cache_get_max_width (view->page_cache,
2937                                      view->rotation,
2938                                      1.0,
2939                                      &doc_width);
2940         ev_page_cache_get_max_height (view->page_cache,
2941                                       view->rotation,
2942                                       1.0,
2943                                       &doc_height);
2944         compute_border (view, doc_width, doc_height, &border);
2945
2946         width -= (border.left + border.right + 2 * view->spacing);
2947         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2948
2949         /* FIXME: We really need to calculate the overall height here, not the
2950          * page height.  We assume there's always a vertical scrollbar for
2951          * now.  We need to fix this. */
2952         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2953                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2954         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2955                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2956         else
2957                 g_assert_not_reached ();
2958
2959         ev_view_set_zoom (view, scale, FALSE);
2960 }
2961
2962 static void
2963 ev_view_zoom_for_size_dual_page (EvView *view,
2964                                  int     width,
2965                                  int     height,
2966                                  int     vsb_width,
2967                                  int     hsb_height)
2968 {
2969         GtkBorder border;
2970         gint doc_width, doc_height;
2971         gdouble scale;
2972         gint other_page;
2973
2974         other_page = view->current_page ^ 1;
2975
2976         /* Find the largest of the two. */
2977         ev_page_cache_get_size (view->page_cache,
2978                                 view->current_page,
2979                                 view->rotation,
2980                                 1.0,
2981                                 &doc_width, &doc_height);
2982
2983         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
2984                 gint width_2, height_2;
2985                 ev_page_cache_get_size (view->page_cache,
2986                                         other_page,
2987                                         view->rotation,
2988                                         1.0,
2989                                         &width_2, &height_2);
2990                 if (width_2 > doc_width)
2991                         doc_width = width_2;
2992                 if (height_2 > doc_height)
2993                         doc_height = height_2;
2994         }
2995         compute_border (view, doc_width, doc_height, &border);
2996
2997         doc_width = doc_width * 2;
2998         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
2999         height -= (border.top + border.bottom + 2 * view->spacing);
3000
3001         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3002                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3003         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3004                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3005         else
3006                 g_assert_not_reached ();
3007
3008         ev_view_set_zoom (view, scale, FALSE);
3009 }
3010
3011 static void
3012 ev_view_zoom_for_size_single_page (EvView *view,
3013                                    int     width,
3014                                    int     height,
3015                                    int     vsb_width,
3016                                    int     hsb_height)
3017 {
3018         int doc_width, doc_height;
3019         GtkBorder border;
3020         gdouble scale;
3021
3022         ev_page_cache_get_size (view->page_cache,
3023                                 view->current_page,
3024                                 view->rotation,
3025                                 1.0,
3026                                 &doc_width,
3027                                 &doc_height);
3028         /* Get an approximate border */
3029         compute_border (view, width, height, &border);
3030
3031         width -= (border.left + border.right + 2 * view->spacing);
3032         height -= (border.top + border.bottom + 2 * view->spacing);
3033
3034         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
3035                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
3036         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
3037                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
3038         else
3039                 g_assert_not_reached ();
3040
3041         ev_view_set_zoom (view, scale, FALSE);
3042 }
3043
3044 void
3045 ev_view_set_zoom_for_size (EvView *view,
3046                            int     width,
3047                            int     height,
3048                            int     vsb_width,
3049                            int     hsb_height)
3050 {
3051         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
3052                           view->sizing_mode == EV_SIZING_BEST_FIT);
3053         g_return_if_fail (width >= 0);
3054         g_return_if_fail (height >= 0);
3055
3056         if (view->document == NULL)
3057                 return;
3058
3059         if (view->presentation)
3060                 ev_view_zoom_for_size_presentation (view, width, height);
3061         else if (view->continuous && view->dual_page)
3062                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
3063         else if (view->continuous)
3064                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
3065         else if (view->dual_page)
3066                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
3067         else
3068                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
3069 }
3070
3071 /*** Status text messages ***/
3072
3073 const char *
3074 ev_view_get_status (EvView *view)
3075 {
3076         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3077
3078         return view->status;
3079 }
3080
3081 static void
3082 ev_view_set_status (EvView *view, const char *message)
3083 {
3084         g_return_if_fail (EV_IS_VIEW (view));
3085
3086         if (message != view->status) {
3087                 g_free (view->status);
3088                 view->status = g_strdup (message);
3089                 g_object_notify (G_OBJECT (view), "status");
3090         }
3091 }
3092
3093 static void
3094 update_find_status_message (EvView *view)
3095 {
3096         char *message;
3097
3098         if (view->current_page == view->find_page) {
3099                 int results;
3100
3101                 results = ev_document_find_get_n_results
3102                                 (EV_DOCUMENT_FIND (view->document),
3103                                  view->current_page);
3104                 /* TRANS: Sometimes this could be better translated as
3105                    "%d hit(s) on this page".  Therefore this string
3106                    contains plural cases. */
3107                 message = g_strdup_printf (ngettext ("%d found on this page",
3108                                                      "%d found on this page",
3109                                                      results),
3110                                            results);
3111         } else {
3112                 double percent;
3113
3114                 percent = ev_document_find_get_progress
3115                                 (EV_DOCUMENT_FIND (view->document));
3116                 if (percent >= (1.0 - 1e-10)) {
3117                         message = g_strdup (_("Not found"));
3118                 } else {
3119                         message = g_strdup_printf (_("%3d%% remaining to search"),
3120                                                    (int) ((1.0 - percent) * 100));
3121                 }
3122
3123         }
3124         ev_view_set_find_status (view, message);
3125         g_free (message);
3126 }
3127
3128 const char *
3129 ev_view_get_find_status (EvView *view)
3130 {
3131         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
3132
3133         return view->find_status;
3134 }
3135
3136 static void
3137 ev_view_set_find_status (EvView *view, const char *message)
3138 {
3139         g_return_if_fail (EV_IS_VIEW (view));
3140
3141         g_free (view->find_status);
3142         view->find_status = g_strdup (message);
3143         g_object_notify (G_OBJECT (view), "find-status");
3144 }
3145
3146 /*** Find ***/
3147
3148 static void
3149 jump_to_find_result (EvView *view)
3150 {
3151         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3152         EvRectangle rect;
3153         GdkRectangle view_rect;
3154         int n_results;
3155         int page = view->find_page;
3156
3157         n_results = ev_document_find_get_n_results (find, page);
3158
3159         if (n_results > 0  && view->find_result < n_results) {
3160                 ev_document_find_get_result
3161                         (find, page, view->find_result, &rect);
3162
3163                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
3164                 ensure_rectangle_is_visible (view, &view_rect);
3165         }
3166 }
3167
3168 static void
3169 jump_to_find_page (EvView *view, EvViewFindDirection direction)
3170 {
3171         int n_pages, i;
3172
3173         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3174
3175         for (i = 0; i < n_pages; i++) {
3176                 int has_results;
3177                 int page;
3178
3179                 if (direction == EV_VIEW_FIND_NEXT)
3180                         page = view->find_page + i;
3181                 else
3182                         page = view->find_page - i;
3183
3184
3185                 if (page >= n_pages) {
3186                         page = page - n_pages;
3187                 }
3188                 if (page < 0)
3189                         page = page + n_pages;
3190
3191                 has_results = ev_document_find_page_has_results
3192                                 (EV_DOCUMENT_FIND (view->document), page);
3193                 if (has_results == -1) {
3194                         view->find_page = page;
3195                         break;
3196                 } else if (has_results == 1) {
3197                         ev_page_cache_set_current_page (view->page_cache, page);
3198                         break;
3199                 }
3200         }
3201 }
3202
3203 gboolean
3204 ev_view_can_find_next (EvView *view)
3205 {
3206         if (EV_IS_DOCUMENT_FIND (view->document)) {
3207                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3208                 int i, n_pages;
3209
3210                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
3211                 for (i = 0; i < n_pages; i++) {
3212                         if (ev_document_find_get_n_results (find, i) > 0) {
3213                                 return TRUE;
3214                         }
3215                 }
3216         }
3217
3218         return FALSE;
3219 }
3220
3221 void
3222 ev_view_find_next (EvView *view)
3223 {
3224         int n_results, n_pages;
3225         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3226
3227         n_results = ev_document_find_get_n_results (find, view->current_page);
3228
3229         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3230
3231         view->find_result++;
3232
3233         if (view->find_result >= n_results) {
3234
3235                 view->find_result = 0;
3236                 view->find_page++;
3237                 if (view->find_page >= n_pages) {
3238                         view->find_page = 0;
3239                 }
3240
3241                 jump_to_find_page (view, EV_VIEW_FIND_NEXT);
3242                 jump_to_find_result (view);
3243         } else {
3244                 jump_to_find_result (view);
3245                 gtk_widget_queue_draw (GTK_WIDGET (view));
3246         }
3247 }
3248
3249 void
3250 ev_view_find_previous (EvView *view)
3251 {
3252         int n_results, n_pages;
3253         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3254         EvPageCache *page_cache;
3255
3256         page_cache = ev_page_cache_get (view->document);
3257
3258         n_results = ev_document_find_get_n_results (find, view->current_page);
3259
3260         n_pages = ev_page_cache_get_n_pages (page_cache);
3261
3262         view->find_result--;
3263
3264         if (view->find_result < 0) {
3265
3266                 view->find_page--;
3267                 if (view->find_page < 0) {
3268                         view->find_page = n_pages - 1;
3269                 }
3270
3271                 jump_to_find_page (view, EV_VIEW_FIND_PREV);
3272                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
3273                 jump_to_find_result (view);
3274         } else {
3275                 jump_to_find_result (view);
3276                 gtk_widget_queue_draw (GTK_WIDGET (view));
3277         }
3278 }
3279
3280 /*** Selections ***/
3281
3282 /* compute_new_selection_rect/text calculates the area currently selected by
3283  * view_rect.  each handles a different mode;
3284  */
3285 static GList *
3286 compute_new_selection_rect (EvView       *view,
3287                             GdkPoint     *start,
3288                             GdkPoint     *stop)
3289 {
3290         GdkRectangle view_rect;
3291         int n_pages, i;
3292         GList *list = NULL;
3293
3294         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
3295
3296         view_rect.x = MIN (start->x, stop->x);
3297         view_rect.y = MIN (start->y, stop->y);
3298         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
3299         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
3300
3301         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3302
3303         for (i = 0; i < n_pages; i++) {
3304                 GdkRectangle page_area;
3305                 GtkBorder border;
3306
3307                 if (get_page_extents (view, i, &page_area, &border)) {
3308                         GdkRectangle overlap;
3309
3310                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
3311                                 EvViewSelection *selection;
3312
3313                                 selection = g_new0 (EvViewSelection, 1);
3314                                 selection->page = i;
3315                                 view_rect_to_doc_rect (view, &overlap, &page_area,
3316                                                        &(selection->rect));
3317
3318                                 list = g_list_append (list, selection);
3319                         }
3320                 }
3321         }
3322
3323         return list;
3324 }
3325
3326 static gboolean
3327 gdk_rectangle_point_in (GdkRectangle *rectangle,
3328                         GdkPoint     *point)
3329 {
3330         return rectangle->x <= point->x &&
3331                 rectangle->y <= point->y &&
3332                 point->x < rectangle->x + rectangle->width &&
3333                 point->y < rectangle->y + rectangle->height;
3334 }
3335
3336 static GList *
3337 compute_new_selection_text (EvView   *view,
3338                             GdkPoint *start,
3339                             GdkPoint *stop)
3340 {
3341         int n_pages, i, first, last;
3342         GList *list = NULL;
3343         EvViewSelection *selection;
3344         gint width, height;
3345         int start_page, end_page;
3346
3347         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
3348
3349         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3350
3351         /* First figure out the range of pages the selection
3352          * affects. */
3353         first = n_pages;
3354         last = 0;
3355         if (view->continuous) {
3356                 start_page = 0;
3357                 end_page = n_pages;
3358         } else if (view->dual_page) {
3359                 start_page = view->start_page;
3360                 end_page = view->end_page + 1;
3361         } else {
3362                 start_page = view->current_page;
3363                 end_page = view->current_page + 1;
3364         }
3365
3366         for (i = start_page; i < end_page; i++) {
3367                 GdkRectangle page_area;
3368                 GtkBorder border;
3369
3370                 get_page_extents (view, i, &page_area, &border);
3371                 if (gdk_rectangle_point_in (&page_area, start) ||
3372                     gdk_rectangle_point_in (&page_area, stop)) {
3373                         if (first == n_pages)
3374                                 first = i;
3375                         last = i;
3376                 }
3377
3378         }
3379
3380
3381
3382         /* Now create a list of EvViewSelection's for the affected
3383          * pages.  This could be an empty list, a list of just one
3384          * page or a number of pages.*/
3385         for (i = first; i < last + 1; i++) {
3386                 GdkRectangle page_area;
3387                 GtkBorder border;
3388                 GdkPoint *point;
3389
3390                 ev_page_cache_get_size (view->page_cache, i,
3391                                         view->rotation,
3392                                         1.0, &width, &height);
3393
3394                 selection = g_new0 (EvViewSelection, 1);
3395                 selection->page = i;
3396                 selection->rect.x1 = selection->rect.y1 = 0;
3397                 selection->rect.x2 = width;
3398                 selection->rect.y2 = height;
3399
3400                 get_page_extents (view, i, &page_area, &border);
3401
3402                 if (gdk_rectangle_point_in (&page_area, start))
3403                         point = start;
3404                 else
3405                         point = stop;
3406
3407                 if (i == first)
3408                         view_point_to_doc_point (view, point, &page_area,
3409                                                  &selection->rect.x1,
3410                                                  &selection->rect.y1);
3411
3412                 /* If the selection is contained within just one page,
3413                  * make sure we don't write 'start' into both points
3414                  * in selection->rect. */
3415                 if (first == last)
3416                         point = stop;
3417
3418                 if (i == last)
3419                         view_point_to_doc_point (view, point, &page_area,
3420                                                  &selection->rect.x2,
3421                                                  &selection->rect.y2);
3422
3423                 list = g_list_append (list, selection);
3424         }
3425
3426         return list;
3427 }
3428
3429 /* This function takes the newly calculated list, and figures out which regions
3430  * have changed.  It then queues a redraw approporiately.
3431  */
3432 static void
3433 merge_selection_region (EvView *view,
3434                         GList  *new_list)
3435 {
3436         GList *old_list;
3437         GList *new_list_ptr, *old_list_ptr;
3438
3439         /* Update the selection */
3440         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
3441         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3442         view->selection_info.selections = new_list;
3443         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
3444
3445         new_list_ptr = new_list;
3446         old_list_ptr = old_list;
3447
3448         while (new_list_ptr || old_list_ptr) {
3449                 EvViewSelection *old_sel, *new_sel;
3450                 int cur_page;
3451                 GdkRegion *region = NULL;
3452
3453                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
3454                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
3455
3456                 /* Assume that the lists are in order, and we run through them
3457                  * comparing them, one page at a time.  We come out with the
3458                  * first page we see. */
3459                 if (new_sel && old_sel) {
3460                         if (new_sel->page < old_sel->page) {
3461                                 new_list_ptr = new_list_ptr->next;
3462                                 old_sel = NULL;
3463                         } else if (new_sel->page > old_sel->page) {
3464                                 old_list_ptr = old_list_ptr->next;
3465                                 new_sel = NULL;
3466                         } else {
3467                                 new_list_ptr = new_list_ptr->next;
3468                                 old_list_ptr = old_list_ptr->next;
3469                         }
3470                 } else if (new_sel) {
3471                         new_list_ptr = new_list_ptr->next;
3472                 } else if (old_sel) {
3473                         old_list_ptr = old_list_ptr->next;
3474                 }
3475
3476                 g_assert (new_sel || old_sel);
3477
3478                 /* is the page we're looking at on the screen?*/
3479                 cur_page = new_sel ? new_sel->page : old_sel->page;
3480                 if (cur_page < view->start_page || cur_page > view->end_page)
3481                         continue;
3482
3483                 /* seed the cache with a new page.  We are going to need the new
3484                  * region too. */
3485                 if (new_sel) {
3486                         GdkRegion *tmp_region = NULL;
3487                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
3488                                                               cur_page,
3489                                                               view->scale,
3490                                                               &tmp_region);
3491                         if (tmp_region) {
3492                                 new_sel->covered_region = gdk_region_copy (tmp_region);
3493                         }
3494                 }
3495
3496                 /* Now we figure out what needs redrawing */
3497                 if (old_sel && new_sel) {
3498                         if (old_sel->covered_region &&
3499                             new_sel->covered_region) {
3500                                 /* We only want to redraw the areas that have
3501                                  * changed, so we xor the old and new regions
3502                                  * and redraw if it's different */
3503                                 region = gdk_region_copy (old_sel->covered_region);
3504                                 gdk_region_xor (region, new_sel->covered_region);
3505                                 if (gdk_region_empty (region)) {
3506                                         gdk_region_destroy (region);
3507                                         region = NULL;
3508                                 }
3509                         } else if (old_sel->covered_region) {
3510                                 region = gdk_region_copy (old_sel->covered_region);
3511                         } else if (new_sel->covered_region) {
3512                                 region = gdk_region_copy (new_sel->covered_region);
3513                         }
3514                 } else if (old_sel && !new_sel) {
3515                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
3516                                 region = gdk_region_copy (old_sel->covered_region);
3517                         }
3518                 } else if (!old_sel && new_sel) {
3519                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
3520                                 region = gdk_region_copy (new_sel->covered_region);
3521                         }
3522                 } else {
3523                         g_assert_not_reached ();
3524                 }
3525
3526                 /* Redraw the damaged region! */
3527                 if (region) {
3528                         GdkRectangle page_area;
3529                         GtkBorder border;
3530
3531                         get_page_extents (view, cur_page, &page_area, &border);
3532                         gdk_region_offset (region,
3533                                            page_area.x + border.left - view->scroll_x,
3534                                            page_area.y + border.top - view->scroll_y);
3535                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
3536                         gdk_region_destroy (region);
3537                 }
3538         }
3539
3540         /* Free the old list, now that we're done with it. */
3541         g_list_foreach (old_list, (GFunc) selection_free, NULL);
3542 }
3543
3544 static void
3545 compute_selections (EvView   *view,
3546                     GdkPoint *start,
3547                     GdkPoint *stop)
3548 {
3549         GList *list;
3550
3551         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
3552                 list = compute_new_selection_rect (view, start, stop);
3553         else
3554                 list = compute_new_selection_text (view, start, stop);
3555         merge_selection_region (view, list);
3556 }
3557
3558 /* Free's the selection.  It's up to the caller to queue redraws if needed.
3559  */
3560 static void
3561 selection_free (EvViewSelection *selection)
3562 {
3563         if (selection->covered_region)
3564                 gdk_region_destroy (selection->covered_region);
3565         g_free (selection);
3566 }
3567
3568 static void
3569 clear_selection (EvView *view)
3570 {
3571         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3572         view->selection_info.selections = NULL;
3573         view->selection_info.in_selection = FALSE;
3574 }
3575
3576
3577 void
3578 ev_view_select_all (EvView *view)
3579 {
3580         int n_pages, i;
3581
3582         /* Disable selection on rotated pages for the 0.4.0 series */
3583         if (view->rotation != 0)
3584                 return;
3585
3586         clear_selection (view);
3587
3588         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3589         for (i = 0; i < n_pages; i++) {
3590                 int width, height;
3591                 EvViewSelection *selection;
3592
3593                 ev_page_cache_get_size (view->page_cache,
3594                                         i,
3595                                         view->rotation,
3596                                         1.0, &width, &height);
3597
3598                 selection = g_new0 (EvViewSelection, 1);
3599                 selection->page = i;
3600                 selection->rect.x1 = selection->rect.y1 = 0;
3601                 selection->rect.x2 = width;
3602                 selection->rect.y2 = height;
3603
3604                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
3605         }
3606
3607         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
3608         gtk_widget_queue_draw (GTK_WIDGET (view));
3609 }
3610
3611 static char *
3612 get_selected_text (EvView *ev_view)
3613 {
3614         GString *text;
3615         GList *l;
3616
3617         text = g_string_new (NULL);
3618
3619         ev_document_doc_mutex_lock ();
3620
3621         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
3622                 EvViewSelection *selection = (EvViewSelection *)l->data;
3623                 char *tmp;
3624
3625                 tmp = ev_document_get_text (ev_view->document,
3626                                             selection->page,
3627                                             &selection->rect);
3628                 g_string_append (text, tmp);
3629                 g_free (tmp);
3630         }
3631
3632         ev_document_doc_mutex_unlock ();
3633
3634         return g_string_free (text, FALSE);
3635 }
3636
3637 void
3638 ev_view_copy (EvView *ev_view)
3639 {
3640         GtkClipboard *clipboard;
3641         char *text;
3642
3643         if (!ev_document_can_get_text (ev_view->document)) {
3644                 return;
3645         }
3646
3647         text = get_selected_text (ev_view);
3648         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3649                                               GDK_SELECTION_CLIPBOARD);
3650         gtk_clipboard_set_text (clipboard, text, -1);
3651         g_free (text);
3652 }
3653
3654 static void
3655 ev_view_primary_get_cb (GtkClipboard     *clipboard,
3656                         GtkSelectionData *selection_data,
3657                         guint             info,
3658                         gpointer          data)
3659 {
3660         EvView *ev_view = EV_VIEW (data);
3661         char *text;
3662
3663         if (!ev_document_can_get_text (ev_view->document)) {
3664                 return;
3665         }
3666
3667         text = get_selected_text (ev_view);
3668         gtk_selection_data_set_text (selection_data, text, -1);
3669         g_free (text);
3670 }
3671
3672 static void
3673 ev_view_primary_clear_cb (GtkClipboard *clipboard,
3674                           gpointer      data)
3675 {
3676         EvView *view = EV_VIEW (data);
3677
3678         clear_selection (view);
3679 }
3680
3681 static void
3682 ev_view_update_primary_selection (EvView *ev_view)
3683 {
3684         GtkClipboard *clipboard;
3685
3686         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3687                                               GDK_SELECTION_PRIMARY);
3688
3689         if (ev_view->selection_info.selections) {
3690                 if (!gtk_clipboard_set_with_owner (clipboard,
3691                                                    targets,
3692                                                    G_N_ELEMENTS (targets),
3693                                                    ev_view_primary_get_cb,
3694                                                    ev_view_primary_clear_cb,
3695                                                    G_OBJECT (ev_view)))
3696                         ev_view_primary_clear_cb (clipboard, ev_view);
3697         } else {
3698                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
3699                         gtk_clipboard_clear (clipboard);
3700         }
3701 }
3702
3703 /*** Cursor operations ***/
3704
3705 static GdkCursor *
3706 ev_view_create_invisible_cursor(void)
3707 {
3708        GdkBitmap *empty;
3709        GdkColor black = { 0, 0, 0, 0 };
3710        static char bits[] = { 0x00 };
3711
3712        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
3713
3714        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
3715 }
3716
3717 static void
3718 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
3719 {
3720         GdkCursor *cursor = NULL;
3721         GdkDisplay *display;
3722         GtkWidget *widget;
3723
3724         if (view->cursor == new_cursor) {
3725                 return;
3726         }
3727
3728         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
3729         display = gtk_widget_get_display (widget);
3730         view->cursor = new_cursor;
3731
3732         switch (new_cursor) {
3733                 case EV_VIEW_CURSOR_NORMAL:
3734                         gdk_window_set_cursor (widget->window, NULL);
3735                         break;
3736                 case EV_VIEW_CURSOR_IBEAM:
3737                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
3738                         break;
3739                 case EV_VIEW_CURSOR_LINK:
3740                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
3741                         break;
3742                 case EV_VIEW_CURSOR_WAIT:
3743                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
3744                         break;
3745                 case EV_VIEW_CURSOR_HIDDEN:
3746                         cursor = ev_view_create_invisible_cursor ();
3747                         break;
3748                 case EV_VIEW_CURSOR_DRAG:
3749                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
3750                         break;
3751         }
3752
3753         if (cursor) {
3754                 gdk_window_set_cursor (widget->window, cursor);
3755                 gdk_cursor_unref (cursor);
3756                 gdk_flush();
3757         }
3758 }
3759
3760 void
3761 ev_view_hide_cursor (EvView *view)
3762 {
3763        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
3764 }
3765
3766 void
3767 ev_view_show_cursor (EvView *view)
3768 {
3769        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3770 }
3771
3772 gboolean
3773 ev_view_next_page (EvView *view)
3774 {
3775         int page;
3776
3777         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3778
3779         page = ev_page_cache_get_current_page (view->page_cache);
3780         page = ev_view_get_dual_page (view) ? page + 2 : page + 1;
3781
3782         if (page < ev_page_cache_get_n_pages (view->page_cache)) {
3783                 ev_page_cache_set_current_page (view->page_cache, page);
3784                 return TRUE;
3785         } else {
3786                 return FALSE;
3787         }
3788 }
3789
3790 gboolean
3791 ev_view_previous_page (EvView *view)
3792 {
3793         int page;
3794
3795         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3796
3797         page = ev_page_cache_get_current_page (view->page_cache);
3798         page = ev_view_get_dual_page (view) ? page - 2 : page - 1;
3799
3800         if (page >= 0) {
3801                 ev_page_cache_set_current_page (view->page_cache, page);
3802                 return TRUE;
3803         } else {
3804                 return FALSE;
3805         }
3806 }
3807
3808 /*** Enum description for usage in signal ***/
3809
3810 GType
3811 ev_sizing_mode_get_type (void)
3812 {
3813   static GType etype = 0;
3814   if (etype == 0) {
3815     static const GEnumValue values[] = {
3816       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
3817       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
3818       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
3819       { 0, NULL, NULL }
3820     };
3821     etype = g_enum_register_static ("EvSizingMode", values);
3822   }
3823   return etype;
3824 }