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