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_fith_link (EvView *view, EvLink *link)
1100 {
1101         GdkPoint view_point;
1102         EvPoint doc_point;
1103         int height, page;
1104
1105         page = ev_link_get_page (link);
1106         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, NULL, &height);
1107
1108         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1109
1110         doc_point.x = 0;
1111         doc_point.y = height - ev_link_get_top (link);
1112         doc_point_to_view_point (view, page, &doc_point, &view_point);
1113
1114         gtk_adjustment_set_value (view->vadjustment, view_point.y);
1115 }
1116
1117 static void
1118 goto_xyz_link (EvView *view, EvLink *link)
1119 {
1120         GdkPoint view_point;
1121         EvPoint doc_point;
1122         int height, page;
1123         double zoom;
1124
1125         zoom = ev_link_get_zoom (link);
1126         page = ev_link_get_page (link);
1127         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, NULL, &height);
1128
1129         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1130         if (zoom != 0) {
1131                 ev_view_set_zoom (view, zoom, FALSE);
1132         }
1133
1134         doc_point.x = ev_link_get_left (link);
1135         doc_point.y = height - ev_link_get_top (link);
1136         doc_point_to_view_point (view, page, &doc_point, &view_point);
1137
1138         gtk_adjustment_set_value (view->hadjustment, view_point.x);
1139         gtk_adjustment_set_value (view->vadjustment, view_point.y);
1140 }
1141
1142 void
1143 ev_view_goto_link (EvView *view, EvLink *link)
1144 {
1145         EvLinkType type;
1146         const char *uri;
1147         int page;
1148
1149         type = ev_link_get_link_type (link);
1150
1151         switch (type) {
1152                 case EV_LINK_TYPE_TITLE:
1153                         break;
1154                 case EV_LINK_TYPE_PAGE:
1155                         page = ev_link_get_page (link);
1156                         ev_page_cache_set_current_page (view->page_cache, page);
1157                         break;
1158                 case EV_LINK_TYPE_PAGE_FIT:
1159                         page = ev_link_get_page (link);
1160                         ev_page_cache_set_current_page (view->page_cache, page);
1161                         ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT);
1162                         break;
1163                 case EV_LINK_TYPE_PAGE_FITH:
1164                         goto_fith_link (view, link);
1165                         break;
1166                 case EV_LINK_TYPE_PAGE_XYZ:
1167                         goto_xyz_link (view, link);
1168                         break;
1169                 case EV_LINK_TYPE_EXTERNAL_URI:
1170                         uri = ev_link_get_uri (link);
1171                         gnome_vfs_url_show (uri);
1172                         break;
1173         }
1174 }
1175
1176 static char *
1177 tip_from_link (EvView *view, EvLink *link)
1178 {
1179         EvLinkType type;
1180         char *msg = NULL;
1181         char *page_label;
1182
1183         type = ev_link_get_link_type (link);
1184
1185         switch (type) {
1186                 case EV_LINK_TYPE_TITLE:
1187                         if (ev_link_get_title (link))
1188                                 msg = g_strdup (ev_link_get_title (link));
1189                         break;
1190                 case EV_LINK_TYPE_PAGE:
1191                 case EV_LINK_TYPE_PAGE_XYZ:
1192                         page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link));
1193                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1194                         g_free (page_label);
1195                         break;
1196                 case EV_LINK_TYPE_EXTERNAL_URI:
1197                         msg = g_strdup (ev_link_get_uri (link));
1198                         break;
1199                 default:
1200                         break;
1201         }
1202
1203         return msg;
1204 }
1205
1206 static void
1207 handle_link_over_xy (EvView *view, gint x, gint y)
1208 {
1209         EvLink *link;
1210
1211         link = get_link_at_location (view, x + view->scroll_x, y + view->scroll_y);
1212
1213         if (view->link_tooltip == NULL) {
1214                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1215         }
1216
1217         if (view->hovered_link != link) {
1218                 view->hovered_link = link;
1219                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1220         }
1221
1222         if (link) {
1223                 char *msg = tip_from_link (view, link);
1224
1225                 ev_tooltip_set_position (EV_TOOLTIP (view->link_tooltip), x, y);
1226                 ev_tooltip_set_text (EV_TOOLTIP (view->link_tooltip), msg);
1227                 ev_tooltip_activate (EV_TOOLTIP (view->link_tooltip));
1228                 g_free (msg);
1229
1230                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1231         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1232                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1233         } else {
1234                 ev_view_set_status (view, NULL);
1235                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1236                     view->cursor == EV_VIEW_CURSOR_IBEAM)
1237                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1238         }
1239         return;
1240 }
1241
1242 /*** GtkWidget implementation ***/
1243
1244 static void
1245 ev_view_size_request_continuous_dual_page (EvView         *view,
1246                                            GtkRequisition *requisition)
1247 {
1248         int max_width;
1249         gint n_pages;
1250         GtkBorder border;
1251
1252         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1253                                      view->scale, &max_width);
1254         compute_border (view, max_width, max_width, &border);
1255
1256         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1257
1258         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1259         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1260
1261         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1262                 requisition->width = 1;
1263         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1264                 requisition->width = 1;
1265                 /* FIXME: This could actually be set on one page docs or docs
1266                  * with a strange aspect ratio. */
1267                 /* requisition->height = 1;*/
1268         }
1269 }
1270
1271 static void
1272 ev_view_size_request_continuous (EvView         *view,
1273                                  GtkRequisition *requisition)
1274 {
1275         int max_width;
1276         int n_pages;
1277         GtkBorder border;
1278
1279
1280         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1281                                      view->scale, &max_width);
1282         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1283         compute_border (view, max_width, max_width, &border);
1284
1285         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1286         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1287
1288         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1289                 requisition->width = 1;
1290         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1291                 requisition->width = 1;
1292                 /* FIXME: This could actually be set on one page docs or docs
1293                  * with a strange aspect ratio. */
1294                 /* requisition->height = 1;*/
1295         }
1296 }
1297
1298 static void
1299 ev_view_size_request_dual_page (EvView         *view,
1300                                 GtkRequisition *requisition)
1301 {
1302         GtkBorder border;
1303         gint width, height;
1304
1305         /* Find the largest of the two. */
1306         ev_page_cache_get_size (view->page_cache,
1307                                 view->current_page,
1308                                 view->rotation,
1309                                 view->scale,
1310                                 &width, &height);
1311         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1312                 gint width_2, height_2;
1313                 ev_page_cache_get_size (view->page_cache,
1314                                         view->current_page + 1,
1315                                         view->rotation,
1316                                         view->scale,
1317                                         &width_2, &height_2);
1318                 if (width_2 > width) {
1319                         width = width_2;
1320                         height = height_2;
1321                 }
1322         }
1323         compute_border (view, width, height, &border);
1324
1325         requisition->width = ((width + border.left + border.right) * 2) +
1326                 (view->spacing * 3);
1327         requisition->height = (height + border.top + border.bottom) +
1328                 (view->spacing * 2);
1329
1330         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1331                 requisition->width = 1;
1332         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1333                 requisition->width = 1;
1334                 requisition->height = 1;
1335         }
1336 }
1337
1338 static void
1339 ev_view_size_request_single_page (EvView         *view,
1340                                   GtkRequisition *requisition)
1341 {
1342         GtkBorder border;
1343         gint width, height;
1344
1345         ev_page_cache_get_size (view->page_cache,
1346                                 view->current_page,
1347                                 view->rotation,
1348                                 view->scale,
1349                                 &width, &height);
1350         compute_border (view, width, height, &border);
1351
1352         requisition->width = width + border.left + border.right + (2 * view->spacing);
1353         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1354
1355         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1356                 requisition->width = 1;
1357                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1358         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1359                 requisition->width = 1;
1360                 requisition->height = 1;
1361         }
1362 }
1363
1364 static void
1365 ev_view_size_request (GtkWidget      *widget,
1366                       GtkRequisition *requisition)
1367 {
1368         EvView *view = EV_VIEW (widget);
1369
1370         if (view->document == NULL) {
1371                 requisition->width = 1;
1372                 requisition->height = 1;
1373                 return;
1374         }
1375
1376         if (view->presentation) {
1377                 requisition->width = 1;
1378                 requisition->height = 1;
1379                 return;
1380         }
1381
1382         if (view->continuous && view->dual_page)
1383                 ev_view_size_request_continuous_dual_page (view, requisition);
1384         else if (view->continuous)
1385                 ev_view_size_request_continuous (view, requisition);
1386         else if (view->dual_page)
1387                 ev_view_size_request_dual_page (view, requisition);
1388         else
1389                 ev_view_size_request_single_page (view, requisition);
1390 }
1391
1392 static void
1393 ev_view_size_allocate (GtkWidget      *widget,
1394                        GtkAllocation  *allocation)
1395 {
1396         EvView *view = EV_VIEW (widget);
1397
1398         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1399                   view->sizing_mode == EV_SIZING_BEST_FIT) {
1400
1401                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1402
1403                 ev_view_size_request (widget, &widget->requisition);
1404         }
1405
1406         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1407         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1408
1409         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1410         view->pending_resize = FALSE;
1411
1412         if (view->document)
1413                 view_update_range_and_current_page (view);
1414
1415         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1416 }
1417
1418 static void
1419 ev_view_realize (GtkWidget *widget)
1420 {
1421         EvView *view = EV_VIEW (widget);
1422         GdkWindowAttr attributes;
1423
1424         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1425
1426
1427         attributes.window_type = GDK_WINDOW_CHILD;
1428         attributes.wclass = GDK_INPUT_OUTPUT;
1429         attributes.visual = gtk_widget_get_visual (widget);
1430         attributes.colormap = gtk_widget_get_colormap (widget);
1431
1432         attributes.x = widget->allocation.x;
1433         attributes.y = widget->allocation.y;
1434         attributes.width = widget->allocation.width;
1435         attributes.height = widget->allocation.height;
1436         attributes.event_mask = GDK_EXPOSURE_MASK |
1437                                 GDK_BUTTON_PRESS_MASK |
1438                                 GDK_BUTTON_RELEASE_MASK |
1439                                 GDK_SCROLL_MASK |
1440                                 GDK_KEY_PRESS_MASK |
1441                                 GDK_POINTER_MOTION_MASK |
1442                                 GDK_ENTER_NOTIFY_MASK |
1443                                 GDK_LEAVE_NOTIFY_MASK;
1444
1445         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1446                                          &attributes,
1447                                          GDK_WA_X | GDK_WA_Y |
1448                                          GDK_WA_COLORMAP |
1449                                          GDK_WA_VISUAL);
1450         gdk_window_set_user_data (widget->window, widget);
1451         widget->style = gtk_style_attach (widget->style, widget->window);
1452
1453         if (view->presentation)
1454                 gdk_window_set_background (widget->window, &widget->style->black);
1455         else
1456                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1457 }
1458
1459 static gboolean
1460 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1461 {
1462         EvView *view = EV_VIEW (widget);
1463         guint state;
1464
1465         state = event->state & gtk_accelerator_get_default_mod_mask ();
1466
1467         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
1468                 ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1469
1470                 if (event->direction == GDK_SCROLL_UP ||
1471                     event->direction == GDK_SCROLL_LEFT) {
1472                         if (ev_view_can_zoom_in (view)) {
1473                                 ev_view_zoom_in (view);
1474                         }
1475                 } else {
1476                         if (ev_view_can_zoom_out (view)) {
1477                                 ev_view_zoom_out (view);
1478                         }
1479                 }
1480
1481                 return TRUE;
1482         }
1483
1484         /* Shift+Wheel scrolls the in the perpendicular direction */
1485         if (state & GDK_SHIFT_MASK) {
1486                 if (event->direction == GDK_SCROLL_UP)
1487                         event->direction = GDK_SCROLL_LEFT;
1488                 if (event->direction == GDK_SCROLL_LEFT)
1489                         event->direction = GDK_SCROLL_UP;
1490                 if (event->direction == GDK_SCROLL_DOWN)
1491                         event->direction = GDK_SCROLL_RIGHT;
1492                 if (event->direction == GDK_SCROLL_RIGHT)
1493                         event->direction = GDK_SCROLL_DOWN;
1494
1495                 event->state &= ~GDK_SHIFT_MASK;
1496                 state &= ~GDK_SHIFT_MASK;
1497         }
1498
1499         if (state == 0 && view->presentation) {
1500                 switch (event->direction) {
1501                 case GDK_SCROLL_DOWN:
1502                 case GDK_SCROLL_RIGHT:
1503                         ev_view_next_page (view);
1504                         break;
1505                 case GDK_SCROLL_UP:
1506                 case GDK_SCROLL_LEFT:
1507                         ev_view_previous_page (view);
1508                         break;
1509                 }
1510
1511                 return TRUE;
1512         }
1513
1514         return FALSE;
1515 }
1516
1517 static EvViewSelection *
1518 find_selection_for_page (EvView *view,
1519                          gint    page)
1520 {
1521         GList *list;
1522
1523         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1524                 EvViewSelection *selection;
1525
1526                 selection = (EvViewSelection *) list->data;
1527
1528                 if (selection->page == page)
1529                         return selection;
1530         }
1531
1532         return NULL;
1533 }
1534
1535 static gboolean
1536 ev_view_expose_event (GtkWidget      *widget,
1537                       GdkEventExpose *event)
1538 {
1539         EvView *view = EV_VIEW (widget);
1540         int i;
1541
1542         if (view->document == NULL)
1543                 return FALSE;
1544
1545         for (i = view->start_page; i <= view->end_page; i++) {
1546                 GdkRectangle page_area;
1547                 GtkBorder border;
1548
1549                 if (!get_page_extents (view, i, &page_area, &border))
1550                         continue;
1551
1552                 page_area.x -= view->scroll_x;
1553                 page_area.y -= view->scroll_y;
1554
1555                 draw_one_page (view, i, &page_area, &border, &(event->area));
1556
1557                 if (EV_IS_DOCUMENT_FIND (view->document))
1558                         highlight_find_results (view, i);
1559         }
1560
1561         return FALSE;
1562 }
1563
1564 static gboolean
1565 ev_view_button_press_event (GtkWidget      *widget,
1566                             GdkEventButton *event)
1567 {
1568         EvView *view = EV_VIEW (widget);
1569
1570         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1571                 gtk_widget_grab_focus (widget);
1572         }
1573
1574         view->pressed_button = event->button;
1575
1576         switch (event->button) {
1577                 case 1:
1578                         if (view->selection_info.selections) {
1579                                 clear_selection (view);
1580                                 gtk_widget_queue_draw (widget);
1581                         }
1582
1583                         view->selection_info.start.x = event->x + view->scroll_x;
1584                         view->selection_info.start.y = event->y + view->scroll_y;
1585                         return TRUE;
1586                 case 2:
1587                         /* use root coordinates as reference point because
1588                          * scrolling changes window relative coordinates */
1589                         view->drag_info.start.x = event->x_root;
1590                         view->drag_info.start.y = event->y_root;
1591                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1592                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1593
1594                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1595
1596                         return TRUE;
1597         }
1598
1599         return FALSE;
1600 }
1601
1602
1603 static gboolean
1604 selection_update_idle_cb (EvView *view)
1605 {
1606         GdkPoint point;
1607         point.x = view->motion_x;
1608         point.y = view->motion_y;
1609         compute_selections (view, &view->selection_info.start, &point);
1610
1611         view->selection_update_id = 0;
1612         return FALSE;
1613 }
1614
1615 static gboolean
1616 ev_view_motion_notify_event (GtkWidget      *widget,
1617                              GdkEventMotion *event)
1618 {
1619         EvView *view = EV_VIEW (widget);
1620
1621         if (!view->document)
1622                 return FALSE;
1623
1624         /* For the Evince 0.4.x release, we limit selection to un-rotated
1625          * documents only.
1626          */
1627         if (view->pressed_button == 1 &&
1628             view->rotation == 0) {
1629                 view->selection_info.in_selection = TRUE;
1630                 view->motion_x = event->x + view->scroll_x;
1631                 view->motion_y = event->y + view->scroll_y;
1632
1633                 /* Queue an idle to handle the motion.  We do this because
1634                  * handling any selection events in the motion could be slower
1635                  * than new motion events reach us.  We always put it in the
1636                  * idle to make sure we catch up and don't visibly lag the
1637                  * mouse. */
1638                 if (! view->selection_update_id)
1639                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
1640
1641                 return TRUE;
1642         } else if (view->pressed_button == 2) {
1643                 if (!view->drag_info.in_drag) {
1644                         gboolean start;
1645
1646                         start = gtk_drag_check_threshold (widget,
1647                                                           view->drag_info.start.x,
1648                                                           view->drag_info.start.y,
1649                                                           event->x_root,
1650                                                           event->y_root);
1651                         view->drag_info.in_drag = start;
1652                 }
1653
1654                 if (view->drag_info.in_drag) {
1655                         int dx, dy;
1656                         gdouble dhadj_value, dvadj_value;
1657
1658                         dx = event->x_root - view->drag_info.start.x;
1659                         dy = event->y_root - view->drag_info.start.y;
1660
1661                         dhadj_value = view->hadjustment->page_size *
1662                                       (gdouble)dx / widget->allocation.width;
1663                         dvadj_value = view->vadjustment->page_size *
1664                                       (gdouble)dy / widget->allocation.height;
1665
1666                         /* clamp scrolling to visible area */
1667                         gtk_adjustment_set_value (view->hadjustment,
1668                                                   MIN(view->drag_info.hadj - dhadj_value,
1669                                                       view->hadjustment->upper -
1670                                                       view->hadjustment->page_size));
1671                         gtk_adjustment_set_value (view->vadjustment,
1672                                                   MIN(view->drag_info.vadj - dvadj_value,
1673                                                       view->vadjustment->upper -
1674                                                       view->vadjustment->page_size));
1675
1676                         return TRUE;
1677                 }
1678         /* For the Evince 0.4.x release, we limit links to un-rotated documents
1679          * only.
1680          */
1681         } else if (view->pressed_button <= 0 &&
1682                    view->rotation == 0) {
1683                 handle_link_over_xy (view, event->x, event->y);
1684                 return TRUE;
1685         }
1686
1687         return FALSE;
1688 }
1689
1690 static gboolean
1691 ev_view_button_release_event (GtkWidget      *widget,
1692                               GdkEventButton *event)
1693 {
1694         EvView *view = EV_VIEW (widget);
1695         EvLink *link;
1696
1697         if (view->pressed_button == 2) {
1698                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1699         }
1700
1701         if (view->document) {
1702                 link = get_link_at_location (view, event->x + view->scroll_x,
1703                                              event->y + view->scroll_y);
1704         } else {
1705                 link = NULL;
1706         }
1707
1708         view->pressed_button = -1;
1709         view->drag_info.in_drag = FALSE;
1710
1711         if (view->selection_info.selections) {
1712                 ev_view_update_primary_selection (view);
1713         } else if (link) {
1714                 ev_view_goto_link (view, link);
1715         } else if (view->presentation) {
1716                 switch (event->button) {
1717                 case 1:
1718                         ev_view_next_page (view);
1719                         return TRUE;
1720                 case 3:
1721                         ev_view_previous_page (view);
1722                         return TRUE;
1723                 }
1724         }
1725
1726         return FALSE;
1727 }
1728
1729 static gint
1730 ev_view_focus_in (GtkWidget     *widget,
1731                   GdkEventFocus *event)
1732 {
1733         if (EV_VIEW (widget)->pixbuf_cache)
1734                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1735         gtk_widget_queue_draw (widget);
1736
1737         return FALSE;
1738 }
1739
1740 static gint
1741 ev_view_focus_out (GtkWidget     *widget,
1742                      GdkEventFocus *event)
1743 {
1744         if (EV_VIEW (widget)->pixbuf_cache)
1745                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1746         gtk_widget_queue_draw (widget);
1747
1748         return FALSE;
1749 }
1750
1751 static gboolean
1752 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
1753 {
1754         EvView *view = EV_VIEW (widget);
1755
1756         ev_view_set_status (view, NULL);
1757
1758         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1759             view->cursor == EV_VIEW_CURSOR_IBEAM)
1760                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1761
1762         if (view->link_tooltip) {
1763                 view->hovered_link = NULL;
1764                 ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1765         }
1766
1767         return FALSE;
1768 }
1769
1770 static gboolean
1771 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
1772 {
1773         EvView *view = EV_VIEW (widget);
1774
1775         handle_link_over_xy (view, event->x, event->y);
1776
1777         return FALSE;
1778 }
1779
1780 static void
1781 ev_view_style_set (GtkWidget *widget,
1782                    GtkStyle  *old_style)
1783 {
1784         if (EV_VIEW (widget)->pixbuf_cache)
1785                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1786
1787         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
1788 }
1789
1790
1791 /*** Drawing ***/
1792
1793 static guint32
1794 ev_gdk_color_to_rgb (const GdkColor *color)
1795 {
1796   guint32 result;
1797   result = (0xff0000 | (color->red & 0xff00));
1798   result <<= 8;
1799   result |= ((color->green & 0xff00) | (color->blue >> 8));
1800   return result;
1801 }
1802
1803 static void
1804 draw_rubberband (GtkWidget *widget, GdkWindow *window,
1805                  const GdkRectangle *rect, guchar alpha)
1806 {
1807         GdkGC *gc;
1808         GdkPixbuf *pixbuf;
1809         GdkColor *fill_color_gdk;
1810         guint fill_color;
1811
1812         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
1813         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
1814
1815         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
1816                                  rect->width, rect->height);
1817         gdk_pixbuf_fill (pixbuf, fill_color);
1818
1819         gdk_draw_pixbuf (window, NULL, pixbuf,
1820                          0, 0,
1821                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1822                          rect->width, rect->height,
1823                          GDK_RGB_DITHER_NONE,
1824                          0, 0);
1825
1826         g_object_unref (pixbuf);
1827
1828         gc = gdk_gc_new (window);
1829         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
1830         gdk_draw_rectangle (window, gc, FALSE,
1831                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1832                             rect->width - 1,
1833                             rect->height - 1);
1834         g_object_unref (gc);
1835
1836         gdk_color_free (fill_color_gdk);
1837 }
1838
1839
1840 static void
1841 highlight_find_results (EvView *view, int page)
1842 {
1843         EvDocumentFind *find;
1844         int i, results = 0;
1845
1846         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
1847
1848         find = EV_DOCUMENT_FIND (view->document);
1849
1850         results = ev_document_find_get_n_results (find, page);
1851
1852         for (i = 0; i < results; i++) {
1853                 EvRectangle rectangle;
1854                 GdkRectangle view_rectangle;
1855                 guchar alpha;
1856
1857                 if (i == view->find_result && page == view->find_page) {
1858                         alpha = 0x90;
1859                 } else {
1860                         alpha = 0x20;
1861                 }
1862
1863                 ev_document_find_get_result (find, page, i, &rectangle);
1864                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
1865                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
1866                                  &view_rectangle, alpha);
1867         }
1868 }
1869
1870 static void
1871 draw_loading_text (EvView       *view,
1872                    GdkRectangle *page_area,
1873                    GdkRectangle *expose_area)
1874 {
1875         PangoLayout *layout;
1876         PangoFontDescription *font_desc;
1877         PangoRectangle logical_rect;
1878         double real_scale;
1879         int target_width;
1880
1881         const char *loading_text = _("Loading...");
1882
1883         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
1884
1885         font_desc = pango_font_description_new ();
1886
1887
1888         /* We set the font to be 10 points, get the size, and scale appropriately */
1889         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
1890         pango_layout_set_font_description (layout, font_desc);
1891         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
1892
1893         /* Make sure we fit the middle of the page */
1894         target_width = MAX (page_area->width / 2, 1);
1895         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
1896         pango_font_description_set_size (font_desc, (int)real_scale);
1897         pango_layout_set_font_description (layout, font_desc);
1898         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
1899
1900         gtk_paint_layout (GTK_WIDGET (view)->style,
1901                           GTK_WIDGET (view)->window,
1902                           GTK_WIDGET_STATE (view),
1903                           FALSE,
1904                           page_area,
1905                           GTK_WIDGET (view),
1906                           NULL,
1907                           page_area->x + (target_width/2),
1908                           page_area->y + (page_area->height - logical_rect.height) / 2,
1909                           layout);
1910
1911         pango_font_description_free (font_desc);
1912         g_object_unref (layout);
1913 }
1914
1915 static void
1916 draw_one_page (EvView          *view,
1917                gint             page,
1918                GdkRectangle    *page_area,
1919                GtkBorder       *border,
1920                GdkRectangle    *expose_area)
1921 {
1922         gint width, height;
1923         GdkPixbuf *current_pixbuf;
1924         GdkRectangle overlap;
1925         GdkRectangle real_page_area;
1926         EvViewSelection *selection;
1927
1928         g_assert (view->document);
1929         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
1930                 return;
1931
1932         selection = find_selection_for_page (view, page);
1933         ev_page_cache_get_size (view->page_cache,
1934                                 page, view->rotation,
1935                                 view->scale,
1936                                 &width, &height);
1937         /* Render the document itself */
1938         real_page_area = *page_area;
1939
1940         real_page_area.x += border->left;
1941         real_page_area.y += border->top;
1942         real_page_area.width -= (border->left + border->right);
1943         real_page_area.height -= (border->top + border->bottom);
1944
1945         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
1946                                          GTK_WIDGET (view),
1947                                          page_area, border);
1948
1949         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
1950                 GdkPixbuf *selection_pixbuf = NULL;
1951                 GdkPixbuf *scaled_image;
1952                 GdkPixbuf *scaled_selection;
1953
1954                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
1955
1956                 /* Get the selection pixbuf iff we have something to draw */
1957                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
1958                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
1959                                                                                  page,
1960                                                                                  view->scale,
1961                                                                                  NULL);
1962
1963                 if (current_pixbuf == NULL)
1964                         scaled_image = NULL;
1965                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
1966                          height == gdk_pixbuf_get_height (current_pixbuf))
1967                         scaled_image = g_object_ref (current_pixbuf);
1968                 else
1969                         /* FIXME: We don't want to scale the whole area, just the right
1970                          * area of it */
1971                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
1972                                                                 width, height,
1973                                                                 GDK_INTERP_NEAREST);
1974
1975                 if (selection_pixbuf == NULL)
1976                         scaled_selection = NULL;
1977                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
1978                          height == gdk_pixbuf_get_height (selection_pixbuf))
1979                         scaled_selection = g_object_ref (selection_pixbuf);
1980                 else
1981                         /* FIXME: We don't want to scale the whole area, just the right
1982                          * area of it */
1983                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
1984                                                                     width, height,
1985                                                                     GDK_INTERP_NEAREST);
1986
1987                 if (scaled_image) {
1988                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
1989                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
1990                                          scaled_image,
1991                                          overlap.x - real_page_area.x,
1992                                          overlap.y - real_page_area.y,
1993                                          overlap.x, overlap.y,
1994                                          overlap.width, overlap.height,
1995                                          GDK_RGB_DITHER_NORMAL,
1996                                          0, 0);
1997                         g_object_unref (scaled_image);
1998                 } else {
1999                         draw_loading_text (view,
2000                                            &real_page_area,
2001                                            expose_area);
2002                 }
2003
2004                 if (scaled_selection) {
2005                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
2006                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
2007                                          scaled_selection,
2008                                          overlap.x - real_page_area.x,
2009                                          overlap.y - real_page_area.y,
2010                                          overlap.x, overlap.y,
2011                                          overlap.width, overlap.height,
2012                                          GDK_RGB_DITHER_NORMAL,
2013                                          0, 0);
2014                         g_object_unref (scaled_selection);
2015                 }
2016         }
2017 }
2018
2019 /*** GObject functions ***/
2020
2021 static void
2022 ev_view_finalize (GObject *object)
2023 {
2024         EvView *view = EV_VIEW (object);
2025
2026         LOG ("Finalize");
2027
2028         g_free (view->status);
2029         g_free (view->find_status);
2030
2031         clear_selection (view);
2032
2033         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
2034 }
2035
2036 static void
2037 ev_view_destroy (GtkObject *object)
2038 {
2039         EvView *view = EV_VIEW (object);
2040
2041         if (view->document) {
2042                 g_object_unref (view->document);
2043                 view->document = NULL;
2044         }
2045
2046         if (view->pixbuf_cache) {
2047                 g_object_unref (view->pixbuf_cache);
2048                 view->pixbuf_cache = NULL;
2049         }
2050
2051         if (view->link_tooltip) {
2052                 gtk_widget_destroy (view->link_tooltip);
2053         }
2054
2055         ev_view_set_scroll_adjustments (view, NULL, NULL);
2056
2057         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
2058 }
2059
2060 static void
2061 ev_view_set_property (GObject      *object,
2062                       guint         prop_id,
2063                       const GValue *value,
2064                       GParamSpec   *pspec)
2065 {
2066         EvView *view = EV_VIEW (object);
2067
2068         switch (prop_id)
2069         {
2070         case PROP_CONTINUOUS:
2071                 ev_view_set_continuous (view, g_value_get_boolean (value));
2072                 break;
2073         case PROP_DUAL_PAGE:
2074                 ev_view_set_dual_page (view, g_value_get_boolean (value));
2075                 break;
2076         case PROP_FULLSCREEN:
2077                 ev_view_set_fullscreen (view, g_value_get_boolean (value));
2078                 break;
2079         case PROP_PRESENTATION:
2080                 ev_view_set_presentation (view, g_value_get_boolean (value));
2081                 break;
2082         case PROP_SIZING_MODE:
2083                 ev_view_set_sizing_mode (view, g_value_get_enum (value));
2084                 break;
2085         case PROP_ZOOM:
2086                 ev_view_set_zoom (view, g_value_get_double (value), FALSE);
2087                 break;
2088         case PROP_ROTATION:
2089                 ev_view_set_rotation (view, g_value_get_int (value));
2090                 break;
2091         default:
2092                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2093         }
2094 }
2095
2096 static void
2097 ev_view_get_property (GObject *object,
2098                       guint prop_id,
2099                       GValue *value,
2100                       GParamSpec *pspec)
2101 {
2102         EvView *view = EV_VIEW (object);
2103
2104         switch (prop_id)
2105         {
2106         case PROP_STATUS:
2107                 g_value_set_string (value, view->status);
2108                 break;
2109         case PROP_FIND_STATUS:
2110                 g_value_set_string (value, view->status);
2111                 break;
2112         case PROP_CONTINUOUS:
2113                 g_value_set_boolean (value, view->continuous);
2114                 break;
2115         case PROP_DUAL_PAGE:
2116                 g_value_set_boolean (value, view->dual_page);
2117                 break;
2118         case PROP_FULLSCREEN:
2119                 g_value_set_boolean (value, view->fullscreen);
2120                 break;
2121         case PROP_PRESENTATION:
2122                 g_value_set_boolean (value, view->presentation);
2123                 break;
2124         case PROP_SIZING_MODE:
2125                 g_value_set_enum (value, view->sizing_mode);
2126                 break;
2127         case PROP_ZOOM:
2128                 g_value_set_double (value, view->scale);
2129                 break;
2130         case PROP_ROTATION:
2131                 g_value_set_int (value, view->rotation);
2132                 break;
2133         default:
2134                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2135         }
2136 }
2137
2138 static void
2139 ev_view_class_init (EvViewClass *class)
2140 {
2141         GObjectClass *object_class = G_OBJECT_CLASS (class);
2142         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
2143         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
2144         GtkBindingSet *binding_set;
2145
2146         object_class->finalize = ev_view_finalize;
2147         object_class->set_property = ev_view_set_property;
2148         object_class->get_property = ev_view_get_property;
2149
2150         widget_class->expose_event = ev_view_expose_event;
2151         widget_class->button_press_event = ev_view_button_press_event;
2152         widget_class->motion_notify_event = ev_view_motion_notify_event;
2153         widget_class->button_release_event = ev_view_button_release_event;
2154         widget_class->focus_in_event = ev_view_focus_in;
2155         widget_class->focus_out_event = ev_view_focus_out;
2156         widget_class->size_request = ev_view_size_request;
2157         widget_class->size_allocate = ev_view_size_allocate;
2158         widget_class->realize = ev_view_realize;
2159         widget_class->scroll_event = ev_view_scroll_event;
2160         widget_class->enter_notify_event = ev_view_enter_notify_event;
2161         widget_class->leave_notify_event = ev_view_leave_notify_event;
2162         widget_class->style_set = ev_view_style_set;
2163         gtk_object_class->destroy = ev_view_destroy;
2164
2165         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
2166         class->binding_activated = ev_view_binding_activated;
2167
2168         widget_class->set_scroll_adjustments_signal =
2169             g_signal_new ("set-scroll-adjustments",
2170                           G_OBJECT_CLASS_TYPE (object_class),
2171                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2172                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
2173                           NULL, NULL,
2174                           ev_marshal_VOID__OBJECT_OBJECT,
2175                           G_TYPE_NONE, 2,
2176                           GTK_TYPE_ADJUSTMENT,
2177                           GTK_TYPE_ADJUSTMENT);
2178
2179         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
2180                          G_TYPE_FROM_CLASS (object_class),
2181                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2182                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
2183                          NULL, NULL,
2184                          ev_marshal_VOID__ENUM_BOOLEAN,
2185                          G_TYPE_NONE, 2,
2186                          GTK_TYPE_SCROLL_TYPE,
2187                          G_TYPE_BOOLEAN);
2188
2189         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
2190                          G_TYPE_FROM_CLASS (object_class),
2191                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2192                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
2193                          NULL, NULL,
2194                          ev_marshal_VOID__VOID,
2195                          G_TYPE_NONE, 0, G_TYPE_NONE);
2196
2197         g_object_class_install_property (object_class,
2198                                          PROP_STATUS,
2199                                          g_param_spec_string ("status",
2200                                                               "Status Message",
2201                                                               "The status message",
2202                                                               NULL,
2203                                                               G_PARAM_READABLE));
2204
2205         g_object_class_install_property (object_class,
2206                                          PROP_FIND_STATUS,
2207                                          g_param_spec_string ("find-status",
2208                                                               "Find Status Message",
2209                                                               "The find status message",
2210                                                               NULL,
2211                                                               G_PARAM_READABLE));
2212
2213         g_object_class_install_property (object_class,
2214                                          PROP_CONTINUOUS,
2215                                          g_param_spec_boolean ("continuous",
2216                                                                "Continuous",
2217                                                                "Continuous scrolling mode",
2218                                                                TRUE,
2219                                                                G_PARAM_READWRITE));
2220
2221         g_object_class_install_property (object_class,
2222                                          PROP_DUAL_PAGE,
2223                                          g_param_spec_boolean ("dual-page",
2224                                                                "Dual Page",
2225                                                                "Two pages visible at once",
2226                                                                FALSE,
2227                                                                G_PARAM_READWRITE));
2228         g_object_class_install_property (object_class,
2229                                          PROP_FULLSCREEN,
2230                                          g_param_spec_boolean ("fullscreen",
2231                                                                "Full Screen",
2232                                                                "Draw page in a fullscreen fashion",
2233                                                                FALSE,
2234                                                                G_PARAM_READWRITE));
2235         g_object_class_install_property (object_class,
2236                                          PROP_PRESENTATION,
2237                                          g_param_spec_boolean ("presentation",
2238                                                                "Presentation",
2239                                                                "Draw page in presentation mode",
2240                                                                TRUE,
2241                                                                G_PARAM_READWRITE));
2242
2243         g_object_class_install_property (object_class,
2244                                          PROP_SIZING_MODE,
2245                                          g_param_spec_enum ("sizing-mode",
2246                                                             "Sizing Mode",
2247                                                             "Sizing Mode",
2248                                                             EV_TYPE_SIZING_MODE,
2249                                                             EV_SIZING_FIT_WIDTH,
2250                                                             G_PARAM_READWRITE));
2251
2252         g_object_class_install_property (object_class,
2253                                          PROP_ZOOM,
2254                                          g_param_spec_double ("zoom",
2255                                                               "Zoom factor",
2256                                                                "Zoom factor",
2257                                                                MIN_SCALE,
2258                                                                MAX_SCALE,
2259                                                                1.0,
2260                                                                G_PARAM_READWRITE));
2261         g_object_class_install_property (object_class,
2262                                          PROP_ROTATION,
2263                                          g_param_spec_double ("rotation",
2264                                                               "Rotation",
2265                                                                "Rotation",
2266                                                                0,
2267                                                                360,
2268                                                                0,
2269                                                                G_PARAM_READWRITE));
2270
2271         binding_set = gtk_binding_set_by_class (class);
2272
2273         add_scroll_binding_keypad (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
2274         add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
2275         add_scroll_binding_keypad (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
2276         add_scroll_binding_keypad (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
2277 }
2278
2279 static void
2280 ev_view_init (EvView *view)
2281 {
2282         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
2283
2284         view->spacing = 5;
2285         view->scale = 1.0;
2286         view->current_page = 0;
2287         view->pressed_button = -1;
2288         view->cursor = EV_VIEW_CURSOR_NORMAL;
2289         view->drag_info.in_drag = FALSE;
2290         view->selection_info.in_selection = FALSE;
2291         view->selection_mode = EV_VIEW_SELECTION_TEXT;
2292         view->continuous = TRUE;
2293         view->dual_page = FALSE;
2294         view->presentation = FALSE;
2295         view->fullscreen = FALSE;
2296         view->sizing_mode = EV_SIZING_FIT_WIDTH;
2297         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2298 }
2299
2300 /*** Callbacks ***/
2301
2302 static void
2303 find_changed_cb (EvDocument *document, int page, EvView *view)
2304 {
2305         jump_to_find_page (view, EV_VIEW_FIND_NEXT);
2306         jump_to_find_result (view);
2307         update_find_status_message (view);
2308
2309         if (view->current_page == page)
2310                 gtk_widget_queue_draw (GTK_WIDGET (view));
2311 }
2312
2313 static void
2314 job_finished_cb (EvPixbufCache *pixbuf_cache,
2315                  EvView        *view)
2316 {
2317         gtk_widget_queue_draw (GTK_WIDGET (view));
2318 }
2319
2320 static void
2321 page_changed_cb (EvPageCache *page_cache,
2322                  int          new_page,
2323                  EvView      *view)
2324 {
2325         if (view->current_page != new_page) {
2326
2327                 view->current_page = new_page;
2328                 view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2329                 gtk_widget_queue_resize (GTK_WIDGET (view));
2330
2331                 if (EV_IS_DOCUMENT_FIND (view->document)) {
2332                         view->find_page = new_page;
2333                         view->find_result = 0;
2334                         update_find_status_message (view);
2335                 }
2336         }
2337 }
2338
2339 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
2340                                          EvView *view)
2341 {
2342         int dx = 0, dy = 0;
2343
2344         if (! GTK_WIDGET_REALIZED (view))
2345                 return;
2346
2347         if (view->hadjustment) {
2348                 dx = view->scroll_x - (int) view->hadjustment->value;
2349                 view->scroll_x = (int) view->hadjustment->value;
2350         } else {
2351                 view->scroll_x = 0;
2352         }
2353
2354         if (view->vadjustment) {
2355                 dy = view->scroll_y - (int) view->vadjustment->value;
2356                 view->scroll_y = (int) view->vadjustment->value;
2357         } else {
2358                 view->scroll_y = 0;
2359         }
2360
2361
2362         if (view->pending_resize)
2363                 gtk_widget_queue_draw (GTK_WIDGET (view));
2364         else
2365                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
2366
2367
2368         if (view->document)
2369                 view_update_range_and_current_page (view);
2370 }
2371
2372 GtkWidget*
2373 ev_view_new (void)
2374 {
2375         GtkWidget *view;
2376
2377         view = g_object_new (EV_TYPE_VIEW, NULL);
2378
2379         return view;
2380 }
2381
2382 static void
2383 setup_caches (EvView *view)
2384 {
2385         view->page_cache = ev_page_cache_get (view->document);
2386         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
2387         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
2388         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
2389 }
2390
2391 static void
2392 clear_caches (EvView *view)
2393 {
2394         if (view->pixbuf_cache) {
2395                 g_object_unref (view->pixbuf_cache);
2396                 view->pixbuf_cache = NULL;
2397         }
2398
2399         if (view->page_cache) {
2400                 view->page_cache = NULL;
2401         }
2402 }
2403
2404 void
2405 ev_view_set_document (EvView     *view,
2406                       EvDocument *document)
2407 {
2408         g_return_if_fail (EV_IS_VIEW (view));
2409
2410         if (document != view->document) {
2411                 clear_caches (view);
2412
2413                 if (view->document) {
2414                         g_signal_handlers_disconnect_by_func (view->document,
2415                                                               find_changed_cb,
2416                                                               view);
2417                         g_object_unref (view->document);
2418                         view->page_cache = NULL;
2419
2420                 }
2421
2422                 view->document = document;
2423                 view->find_page = 0;
2424                 view->find_result = 0;
2425
2426                 if (view->document) {
2427                         g_object_ref (view->document);
2428                         if (EV_IS_DOCUMENT_FIND (view->document)) {
2429                                 g_signal_connect (view->document,
2430                                                   "find_changed",
2431                                                   G_CALLBACK (find_changed_cb),
2432                                                   view);
2433                         }
2434
2435                         setup_caches (view);
2436                 }
2437
2438                 gtk_widget_queue_resize (GTK_WIDGET (view));
2439         }
2440 }
2441
2442 /*** Zoom and sizing mode ***/
2443
2444 #define EPSILON 0.0000001
2445 void
2446 ev_view_set_zoom (EvView   *view,
2447                   double    factor,
2448                   gboolean  relative)
2449 {
2450         double scale;
2451
2452         if (relative)
2453                 scale = view->scale * factor;
2454         else
2455                 scale = factor;
2456
2457         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
2458
2459         if (ABS (view->scale - scale) < EPSILON)
2460                 return;
2461
2462         view->scale = scale;
2463         view->pending_resize = TRUE;
2464
2465         gtk_widget_queue_resize (GTK_WIDGET (view));
2466
2467         g_object_notify (G_OBJECT (view), "zoom");
2468 }
2469
2470 double
2471 ev_view_get_zoom (EvView *view)
2472 {
2473         return view->scale;
2474 }
2475
2476 gboolean
2477 ev_view_get_continuous (EvView *view)
2478 {
2479         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2480
2481         return view->continuous;
2482 }
2483
2484 void
2485 ev_view_set_continuous (EvView   *view,
2486                         gboolean  continuous)
2487 {
2488         g_return_if_fail (EV_IS_VIEW (view));
2489
2490         continuous = continuous != FALSE;
2491
2492         if (view->continuous != continuous) {
2493                 view->continuous = continuous;
2494                 view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2495                 gtk_widget_queue_resize (GTK_WIDGET (view));
2496         }
2497
2498         g_object_notify (G_OBJECT (view), "continuous");
2499 }
2500
2501 gboolean
2502 ev_view_get_dual_page (EvView *view)
2503 {
2504         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2505
2506         return view->dual_page;
2507 }
2508
2509 void
2510 ev_view_set_dual_page (EvView   *view,
2511                        gboolean  dual_page)
2512 {
2513         g_return_if_fail (EV_IS_VIEW (view));
2514
2515         dual_page = dual_page != FALSE;
2516
2517         if (view->dual_page == dual_page)
2518                 return;
2519
2520         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2521         view->dual_page = dual_page;
2522         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
2523          * preload_cache_size to be 2 if dual_page is set.
2524          */
2525         gtk_widget_queue_resize (GTK_WIDGET (view));
2526
2527         g_object_notify (G_OBJECT (view), "dual-page");
2528 }
2529
2530 void
2531 ev_view_set_fullscreen (EvView   *view,
2532                          gboolean  fullscreen)
2533 {
2534         g_return_if_fail (EV_IS_VIEW (view));
2535
2536         fullscreen = fullscreen != FALSE;
2537
2538         if (view->fullscreen == fullscreen)
2539                 return;
2540
2541         view->fullscreen = fullscreen;
2542         gtk_widget_queue_resize (GTK_WIDGET (view));
2543
2544         g_object_notify (G_OBJECT (view), "fullscreen");
2545 }
2546
2547 gboolean
2548 ev_view_get_fullscreen (EvView *view)
2549 {
2550         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2551
2552         return view->fullscreen;
2553 }
2554
2555 void
2556 ev_view_set_presentation (EvView   *view,
2557                           gboolean  presentation)
2558 {
2559         g_return_if_fail (EV_IS_VIEW (view));
2560
2561         presentation = presentation != FALSE;
2562
2563         if (view->presentation == presentation)
2564                 return;
2565
2566         view->presentation = presentation;
2567         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2568         gtk_widget_queue_resize (GTK_WIDGET (view));
2569
2570         if (GTK_WIDGET_REALIZED (view)) {
2571                 if (view->presentation)
2572                         gdk_window_set_background (GTK_WIDGET(view)->window,
2573                                                    &GTK_WIDGET (view)->style->black);
2574                 else
2575                         gdk_window_set_background (GTK_WIDGET(view)->window,
2576                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
2577         }
2578
2579
2580         g_object_notify (G_OBJECT (view), "presentation");
2581 }
2582
2583 gboolean
2584 ev_view_get_presentation (EvView *view)
2585 {
2586         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2587
2588         return view->presentation;
2589 }
2590
2591 void
2592 ev_view_set_sizing_mode (EvView       *view,
2593                          EvSizingMode  sizing_mode)
2594 {
2595         g_return_if_fail (EV_IS_VIEW (view));
2596
2597         if (view->sizing_mode == sizing_mode)
2598                 return;
2599
2600         view->sizing_mode = sizing_mode;
2601         gtk_widget_queue_resize (GTK_WIDGET (view));
2602
2603         g_object_notify (G_OBJECT (view), "sizing-mode");
2604 }
2605
2606 EvSizingMode
2607 ev_view_get_sizing_mode (EvView *view)
2608 {
2609         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
2610
2611         return view->sizing_mode;
2612 }
2613
2614 gboolean
2615 ev_view_can_zoom_in (EvView *view)
2616 {
2617         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
2618 }
2619
2620 gboolean
2621 ev_view_can_zoom_out (EvView *view)
2622 {
2623         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
2624 }
2625
2626 void
2627 ev_view_zoom_in (EvView *view)
2628 {
2629         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2630
2631         view->pending_scroll = SCROLL_TO_CENTER;
2632         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
2633 }
2634
2635 void
2636 ev_view_zoom_out (EvView *view)
2637 {
2638         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2639
2640         view->pending_scroll = SCROLL_TO_CENTER;
2641         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
2642 }
2643
2644 void
2645 ev_view_rotate_right (EvView *view)
2646 {
2647         int rotation = view->rotation + 90;
2648
2649         if (rotation >= 360) {
2650                 rotation -= 360;
2651         }
2652
2653         ev_view_set_rotation (view, rotation);
2654 }
2655
2656 void
2657 ev_view_rotate_left (EvView *view)
2658 {
2659         int rotation = view->rotation - 90;
2660
2661         if (rotation < 0) {
2662                 rotation += 360;
2663         }
2664
2665         ev_view_set_rotation (view, rotation);
2666 }
2667
2668 void
2669 ev_view_set_rotation (EvView *view, int rotation)
2670 {
2671         view->rotation = rotation;
2672
2673         if (view->pixbuf_cache) {
2674                 ev_pixbuf_cache_clear (view->pixbuf_cache);
2675                 gtk_widget_queue_resize (GTK_WIDGET (view));
2676         }
2677
2678         if (rotation != 0)
2679                 clear_selection (view);
2680
2681         g_object_notify (G_OBJECT (view), "rotation");
2682 }
2683
2684 int
2685 ev_view_get_rotation (EvView *view)
2686 {
2687         return view->rotation;
2688 }
2689
2690 static double
2691 zoom_for_size_fit_width (int doc_width,
2692                          int doc_height,
2693                          int target_width,
2694                          int target_height,
2695                          int vsb_width)
2696 {
2697         double scale;
2698
2699         scale = (double)target_width / doc_width;
2700
2701         if (doc_height * scale > target_height)
2702                 scale = (double) (target_width - vsb_width) / doc_width;
2703
2704         return scale;
2705 }
2706
2707 static double
2708 zoom_for_size_best_fit (int doc_width,
2709                         int doc_height,
2710                         int target_width,
2711                         int target_height,
2712                         int vsb_width,
2713                         int hsb_width)
2714 {
2715         double w_scale;
2716         double h_scale;
2717
2718         w_scale = (double)target_width / doc_width;
2719         h_scale = (double)target_height / doc_height;
2720
2721         if (doc_height * w_scale > target_height)
2722                 w_scale = (double) (target_width - vsb_width) / doc_width;
2723         if (doc_width * h_scale > target_width)
2724                 h_scale = (double) (target_height - hsb_width) / doc_height;
2725
2726         return MIN (w_scale, h_scale);
2727 }
2728
2729
2730 static void
2731 ev_view_zoom_for_size_presentation (EvView *view,
2732                                     int     width,
2733                                     int     height)
2734 {
2735         int doc_width, doc_height;
2736         gdouble scale;
2737
2738         ev_page_cache_get_size (view->page_cache,
2739                                 view->current_page,
2740                                 view->rotation,
2741                                 1.0,
2742                                 &doc_width,
2743                                 &doc_height);
2744         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
2745         ev_view_set_zoom (view, scale, FALSE);
2746 }
2747
2748 static void
2749 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
2750                            int     width,
2751                            int     height,
2752                            int     vsb_width,
2753                            int     hsb_height)
2754 {
2755         int doc_width, doc_height;
2756         GtkBorder border;
2757         gdouble scale;
2758
2759         ev_page_cache_get_max_width (view->page_cache,
2760                                      view->rotation,
2761                                      1.0,
2762                                      &doc_width);
2763         ev_page_cache_get_max_height (view->page_cache,
2764                                       view->rotation,
2765                                       1.0,
2766                                       &doc_height);
2767         compute_border (view, doc_width, doc_height, &border);
2768
2769         doc_width = doc_width * 2;
2770         width -= (2 * (border.left + border.right) + 3 * view->spacing);
2771         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2772
2773         /* FIXME: We really need to calculate the overall height here, not the
2774          * page height.  We assume there's always a vertical scrollbar for
2775          * now.  We need to fix this. */
2776         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2777                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2778         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2779                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2780         else
2781                 g_assert_not_reached ();
2782
2783         ev_view_set_zoom (view, scale, FALSE);
2784 }
2785
2786 static void
2787 ev_view_zoom_for_size_continuous (EvView *view,
2788                                   int     width,
2789                                   int     height,
2790                                   int     vsb_width,
2791                                   int     hsb_height)
2792 {
2793         int doc_width, doc_height;
2794         GtkBorder border;
2795         gdouble scale;
2796
2797         ev_page_cache_get_max_width (view->page_cache,
2798                                      view->rotation,
2799                                      1.0,
2800                                      &doc_width);
2801         ev_page_cache_get_max_height (view->page_cache,
2802                                       view->rotation,
2803                                       1.0,
2804                                       &doc_height);
2805         compute_border (view, doc_width, doc_height, &border);
2806
2807         width -= (border.left + border.right + 2 * view->spacing);
2808         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2809
2810         /* FIXME: We really need to calculate the overall height here, not the
2811          * page height.  We assume there's always a vertical scrollbar for
2812          * now.  We need to fix this. */
2813         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2814                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2815         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2816                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2817         else
2818                 g_assert_not_reached ();
2819
2820         ev_view_set_zoom (view, scale, FALSE);
2821 }
2822
2823 static void
2824 ev_view_zoom_for_size_dual_page (EvView *view,
2825                                  int     width,
2826                                  int     height,
2827                                  int     vsb_width,
2828                                  int     hsb_height)
2829 {
2830         GtkBorder border;
2831         gint doc_width, doc_height;
2832         gdouble scale;
2833         gint other_page;
2834
2835         other_page = view->current_page ^ 1;
2836
2837         /* Find the largest of the two. */
2838         ev_page_cache_get_size (view->page_cache,
2839                                 view->current_page,
2840                                 view->rotation,
2841                                 1.0,
2842                                 &doc_width, &doc_height);
2843
2844         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
2845                 gint width_2, height_2;
2846                 ev_page_cache_get_size (view->page_cache,
2847                                         other_page,
2848                                         view->rotation,
2849                                         1.0,
2850                                         &width_2, &height_2);
2851                 if (width_2 > doc_width)
2852                         doc_width = width_2;
2853                 if (height_2 > doc_height)
2854                         doc_height = height_2;
2855         }
2856         compute_border (view, doc_width, doc_height, &border);
2857
2858         doc_width = doc_width * 2;
2859         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
2860         height -= (border.top + border.bottom + 2 * view->spacing);
2861
2862         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2863                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
2864         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2865                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
2866         else
2867                 g_assert_not_reached ();
2868
2869         ev_view_set_zoom (view, scale, FALSE);
2870 }
2871
2872 static void
2873 ev_view_zoom_for_size_single_page (EvView *view,
2874                                    int     width,
2875                                    int     height,
2876                                    int     vsb_width,
2877                                    int     hsb_height)
2878 {
2879         int doc_width, doc_height;
2880         GtkBorder border;
2881         gdouble scale;
2882
2883         ev_page_cache_get_size (view->page_cache,
2884                                 view->current_page,
2885                                 view->rotation,
2886                                 1.0,
2887                                 &doc_width,
2888                                 &doc_height);
2889         /* Get an approximate border */
2890         compute_border (view, width, height, &border);
2891
2892         width -= (border.left + border.right + 2 * view->spacing);
2893         height -= (border.top + border.bottom + 2 * view->spacing);
2894
2895         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2896                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
2897         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2898                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
2899         else
2900                 g_assert_not_reached ();
2901
2902         ev_view_set_zoom (view, scale, FALSE);
2903 }
2904
2905 void
2906 ev_view_set_zoom_for_size (EvView *view,
2907                            int     width,
2908                            int     height,
2909                            int     vsb_width,
2910                            int     hsb_height)
2911 {
2912         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2913                           view->sizing_mode == EV_SIZING_BEST_FIT);
2914         g_return_if_fail (width >= 0);
2915         g_return_if_fail (height >= 0);
2916
2917         if (view->document == NULL)
2918                 return;
2919
2920         if (view->presentation)
2921                 ev_view_zoom_for_size_presentation (view, width, height);
2922         else if (view->continuous && view->dual_page)
2923                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
2924         else if (view->continuous)
2925                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
2926         else if (view->dual_page)
2927                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
2928         else
2929                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
2930 }
2931
2932 /*** Status text messages ***/
2933
2934 const char *
2935 ev_view_get_status (EvView *view)
2936 {
2937         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
2938
2939         return view->status;
2940 }
2941
2942 static void
2943 ev_view_set_status (EvView *view, const char *message)
2944 {
2945         g_return_if_fail (EV_IS_VIEW (view));
2946
2947         if (message != view->status) {
2948                 g_free (view->status);
2949                 view->status = g_strdup (message);
2950                 g_object_notify (G_OBJECT (view), "status");
2951         }
2952 }
2953
2954 static void
2955 update_find_status_message (EvView *view)
2956 {
2957         char *message;
2958
2959         if (view->current_page == view->find_page) {
2960                 int results;
2961
2962                 results = ev_document_find_get_n_results
2963                                 (EV_DOCUMENT_FIND (view->document),
2964                                  view->current_page);
2965                 /* TRANS: Sometimes this could be better translated as
2966                    "%d hit(s) on this page".  Therefore this string
2967                    contains plural cases. */
2968                 message = g_strdup_printf (ngettext ("%d found on this page",
2969                                                      "%d found on this page",
2970                                                      results),
2971                                            results);
2972         } else {
2973                 double percent;
2974
2975                 percent = ev_document_find_get_progress
2976                                 (EV_DOCUMENT_FIND (view->document));
2977                 if (percent >= (1.0 - 1e-10)) {
2978                         message = g_strdup (_("Not found"));
2979                 } else {
2980                         message = g_strdup_printf (_("%3d%% remaining to search"),
2981                                                    (int) ((1.0 - percent) * 100));
2982                 }
2983
2984         }
2985         ev_view_set_find_status (view, message);
2986         g_free (message);
2987 }
2988
2989 const char *
2990 ev_view_get_find_status (EvView *view)
2991 {
2992         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
2993
2994         return view->find_status;
2995 }
2996
2997 static void
2998 ev_view_set_find_status (EvView *view, const char *message)
2999 {
3000         g_return_if_fail (EV_IS_VIEW (view));
3001
3002         g_free (view->find_status);
3003         view->find_status = g_strdup (message);
3004         g_object_notify (G_OBJECT (view), "find-status");
3005 }
3006
3007 /*** Find ***/
3008
3009 static void
3010 jump_to_find_result (EvView *view)
3011 {
3012         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3013         EvRectangle rect;
3014         GdkRectangle view_rect;
3015         int n_results;
3016         int page = view->find_page;
3017
3018         n_results = ev_document_find_get_n_results (find, page);
3019
3020         if (n_results > 0  && view->find_result < n_results) {
3021                 ev_document_find_get_result
3022                         (find, page, view->find_result, &rect);
3023
3024                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
3025                 ensure_rectangle_is_visible (view, &view_rect);
3026         }
3027 }
3028
3029 static void
3030 jump_to_find_page (EvView *view, EvViewFindDirection direction)
3031 {
3032         int n_pages, i;
3033
3034         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3035
3036         for (i = 0; i < n_pages; i++) {
3037                 int has_results;
3038                 int page;
3039
3040                 if (direction == EV_VIEW_FIND_NEXT)
3041                         page = view->find_page + i;
3042                 else
3043                         page = view->find_page - i;
3044
3045
3046                 if (page >= n_pages) {
3047                         page = page - n_pages;
3048                 }
3049                 if (page < 0)
3050                         page = page + n_pages;
3051
3052                 has_results = ev_document_find_page_has_results
3053                                 (EV_DOCUMENT_FIND (view->document), page);
3054                 if (has_results == -1) {
3055                         view->find_page = page;
3056                         break;
3057                 } else if (has_results == 1) {
3058                         ev_page_cache_set_current_page (view->page_cache, page);
3059                         break;
3060                 }
3061         }
3062 }
3063
3064 gboolean
3065 ev_view_can_find_next (EvView *view)
3066 {
3067         if (EV_IS_DOCUMENT_FIND (view->document)) {
3068                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3069                 int i, n_pages;
3070
3071                 n_pages = ev_page_cache_get_n_pages (view->page_cache);
3072                 for (i = 0; i < n_pages; i++) {
3073                         if (ev_document_find_get_n_results (find, i) > 0) {
3074                                 return TRUE;
3075                         }
3076                 }
3077         }
3078
3079         return FALSE;
3080 }
3081
3082 void
3083 ev_view_find_next (EvView *view)
3084 {
3085         int n_results, n_pages;
3086         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3087
3088         n_results = ev_document_find_get_n_results (find, view->current_page);
3089
3090         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3091
3092         view->find_result++;
3093
3094         if (view->find_result >= n_results) {
3095
3096                 view->find_result = 0;
3097                 view->find_page++;
3098                 if (view->find_page >= n_pages) {
3099                         view->find_page = 0;
3100                 }
3101
3102                 jump_to_find_page (view, EV_VIEW_FIND_NEXT);
3103                 jump_to_find_result (view);
3104         } else {
3105                 jump_to_find_result (view);
3106                 gtk_widget_queue_draw (GTK_WIDGET (view));
3107         }
3108 }
3109
3110 void
3111 ev_view_find_previous (EvView *view)
3112 {
3113         int n_results, n_pages;
3114         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3115         EvPageCache *page_cache;
3116
3117         page_cache = ev_page_cache_get (view->document);
3118
3119         n_results = ev_document_find_get_n_results (find, view->current_page);
3120
3121         n_pages = ev_page_cache_get_n_pages (page_cache);
3122
3123         view->find_result--;
3124
3125         if (view->find_result < 0) {
3126
3127                 view->find_page--;
3128                 if (view->find_page < 0) {
3129                         view->find_page = n_pages - 1;
3130                 }
3131
3132                 jump_to_find_page (view, EV_VIEW_FIND_PREV);
3133                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
3134                 jump_to_find_result (view);
3135         } else {
3136                 jump_to_find_result (view);
3137                 gtk_widget_queue_draw (GTK_WIDGET (view));
3138         }
3139 }
3140
3141 /*** Selections ***/
3142
3143 /* compute_new_selection_rect/text calculates the area currently selected by
3144  * view_rect.  each handles a different mode;
3145  */
3146 static GList *
3147 compute_new_selection_rect (EvView       *view,
3148                             GdkPoint     *start,
3149                             GdkPoint     *stop)
3150 {
3151         GdkRectangle view_rect;
3152         int n_pages, i;
3153         GList *list = NULL;
3154
3155         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
3156
3157         view_rect.x = MIN (start->x, stop->x);
3158         view_rect.y = MIN (start->y, stop->y);
3159         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
3160         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
3161
3162         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3163
3164         for (i = 0; i < n_pages; i++) {
3165                 GdkRectangle page_area;
3166                 GtkBorder border;
3167
3168                 if (get_page_extents (view, i, &page_area, &border)) {
3169                         GdkRectangle overlap;
3170
3171                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
3172                                 EvViewSelection *selection;
3173
3174                                 selection = g_new0 (EvViewSelection, 1);
3175                                 selection->page = i;
3176                                 view_rect_to_doc_rect (view, &overlap, &page_area,
3177                                                        &(selection->rect));
3178
3179                                 list = g_list_append (list, selection);
3180                         }
3181                 }
3182         }
3183
3184         return list;
3185 }
3186
3187 static gboolean
3188 gdk_rectangle_point_in (GdkRectangle *rectangle,
3189                         GdkPoint     *point)
3190 {
3191         return rectangle->x <= point->x &&
3192                 rectangle->y <= point->y &&
3193                 point->x < rectangle->x + rectangle->width &&
3194                 point->y < rectangle->y + rectangle->height;
3195 }
3196
3197 static GList *
3198 compute_new_selection_text (EvView   *view,
3199                             GdkPoint *start,
3200                             GdkPoint *stop)
3201 {
3202         int n_pages, i, first, last;
3203         GList *list = NULL;
3204         EvViewSelection *selection;
3205         gint width, height;
3206         int start_page, end_page;
3207
3208         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
3209
3210         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3211
3212         /* First figure out the range of pages the selection
3213          * affects. */
3214         first = n_pages;
3215         last = 0;
3216         if (view->continuous) {
3217                 start_page = 0;
3218                 end_page = n_pages;
3219         } else if (view->dual_page) {
3220                 start_page = view->start_page;
3221                 end_page = view->end_page + 1;
3222         } else {
3223                 start_page = view->current_page;
3224                 end_page = view->current_page + 1;
3225         }
3226
3227         for (i = start_page; i < end_page; i++) {
3228                 GdkRectangle page_area;
3229                 GtkBorder border;
3230
3231                 get_page_extents (view, i, &page_area, &border);
3232                 if (gdk_rectangle_point_in (&page_area, start) ||
3233                     gdk_rectangle_point_in (&page_area, stop)) {
3234                         if (first == n_pages)
3235                                 first = i;
3236                         last = i;
3237                 }
3238
3239         }
3240
3241
3242
3243         /* Now create a list of EvViewSelection's for the affected
3244          * pages.  This could be an empty list, a list of just one
3245          * page or a number of pages.*/
3246         for (i = first; i < last + 1; i++) {
3247                 GdkRectangle page_area;
3248                 GtkBorder border;
3249                 GdkPoint *point;
3250
3251                 ev_page_cache_get_size (view->page_cache, i,
3252                                         view->rotation,
3253                                         1.0, &width, &height);
3254
3255                 selection = g_new0 (EvViewSelection, 1);
3256                 selection->page = i;
3257                 selection->rect.x1 = selection->rect.y1 = 0;
3258                 selection->rect.x2 = width;
3259                 selection->rect.y2 = height;
3260
3261                 get_page_extents (view, i, &page_area, &border);
3262
3263                 if (gdk_rectangle_point_in (&page_area, start))
3264                         point = start;
3265                 else
3266                         point = stop;
3267
3268                 if (i == first)
3269                         view_point_to_doc_point (view, point, &page_area,
3270                                                  &selection->rect.x1,
3271                                                  &selection->rect.y1);
3272
3273                 /* If the selection is contained within just one page,
3274                  * make sure we don't write 'start' into both points
3275                  * in selection->rect. */
3276                 if (first == last)
3277                         point = stop;
3278
3279                 if (i == last)
3280                         view_point_to_doc_point (view, point, &page_area,
3281                                                  &selection->rect.x2,
3282                                                  &selection->rect.y2);
3283
3284                 list = g_list_append (list, selection);
3285         }
3286
3287         return list;
3288 }
3289
3290 /* This function takes the newly calculated list, and figures out which regions
3291  * have changed.  It then queues a redraw approporiately.
3292  */
3293 static void
3294 merge_selection_region (EvView *view,
3295                         GList  *new_list)
3296 {
3297         GList *old_list;
3298         GList *new_list_ptr, *old_list_ptr;
3299
3300         /* Update the selection */
3301         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
3302         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3303         view->selection_info.selections = new_list;
3304         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
3305
3306         new_list_ptr = new_list;
3307         old_list_ptr = old_list;
3308
3309         while (new_list_ptr || old_list_ptr) {
3310                 EvViewSelection *old_sel, *new_sel;
3311                 int cur_page;
3312                 GdkRegion *region = NULL;
3313
3314                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
3315                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
3316
3317                 /* Assume that the lists are in order, and we run through them
3318                  * comparing them, one page at a time.  We come out with the
3319                  * first page we see. */
3320                 if (new_sel && old_sel) {
3321                         if (new_sel->page < old_sel->page) {
3322                                 new_list_ptr = new_list_ptr->next;
3323                                 old_sel = NULL;
3324                         } else if (new_sel->page > old_sel->page) {
3325                                 old_list_ptr = old_list_ptr->next;
3326                                 new_sel = NULL;
3327                         } else {
3328                                 new_list_ptr = new_list_ptr->next;
3329                                 old_list_ptr = old_list_ptr->next;
3330                         }
3331                 } else if (new_sel) {
3332                         new_list_ptr = new_list_ptr->next;
3333                 } else if (old_sel) {
3334                         old_list_ptr = old_list_ptr->next;
3335                 }
3336
3337                 g_assert (new_sel || old_sel);
3338
3339                 /* is the page we're looking at on the screen?*/
3340                 cur_page = new_sel ? new_sel->page : old_sel->page;
3341                 if (cur_page < view->start_page || cur_page > view->end_page)
3342                         continue;
3343
3344                 /* seed the cache with a new page.  We are going to need the new
3345                  * region too. */
3346                 if (new_sel) {
3347                         GdkRegion *tmp_region = NULL;
3348                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
3349                                                               cur_page,
3350                                                               view->scale,
3351                                                               &tmp_region);
3352                         if (tmp_region) {
3353                                 new_sel->covered_region = gdk_region_copy (tmp_region);
3354                         }
3355                 }
3356
3357                 /* Now we figure out what needs redrawing */
3358                 if (old_sel && new_sel) {
3359                         if (old_sel->covered_region &&
3360                             new_sel->covered_region) {
3361                                 /* We only want to redraw the areas that have
3362                                  * changed, so we xor the old and new regions
3363                                  * and redraw if it's different */
3364                                 region = gdk_region_copy (old_sel->covered_region);
3365                                 gdk_region_xor (region, new_sel->covered_region);
3366                                 if (gdk_region_empty (region)) {
3367                                         gdk_region_destroy (region);
3368                                         region = NULL;
3369                                 }
3370                         } else if (old_sel->covered_region) {
3371                                 region = gdk_region_copy (old_sel->covered_region);
3372                         } else if (new_sel->covered_region) {
3373                                 region = gdk_region_copy (new_sel->covered_region);
3374                         }
3375                 } else if (old_sel && !new_sel) {
3376                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
3377                                 region = gdk_region_copy (old_sel->covered_region);
3378                         }
3379                 } else if (!old_sel && new_sel) {
3380                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
3381                                 region = gdk_region_copy (new_sel->covered_region);
3382                         }
3383                 } else {
3384                         g_assert_not_reached ();
3385                 }
3386
3387                 /* Redraw the damaged region! */
3388                 if (region) {
3389                         GdkRectangle page_area;
3390                         GtkBorder border;
3391
3392                         get_page_extents (view, cur_page, &page_area, &border);
3393                         gdk_region_offset (region,
3394                                            page_area.x + border.left - view->scroll_x,
3395                                            page_area.y + border.top - view->scroll_y);
3396                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
3397                         gdk_region_destroy (region);
3398                 }
3399         }
3400
3401         /* Free the old list, now that we're done with it. */
3402         g_list_foreach (old_list, (GFunc) selection_free, NULL);
3403 }
3404
3405 static void
3406 compute_selections (EvView   *view,
3407                     GdkPoint *start,
3408                     GdkPoint *stop)
3409 {
3410         GList *list;
3411
3412         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
3413                 list = compute_new_selection_rect (view, start, stop);
3414         else
3415                 list = compute_new_selection_text (view, start, stop);
3416         merge_selection_region (view, list);
3417 }
3418
3419 /* Free's the selection.  It's up to the caller to queue redraws if needed.
3420  */
3421 static void
3422 selection_free (EvViewSelection *selection)
3423 {
3424         if (selection->covered_region)
3425                 gdk_region_destroy (selection->covered_region);
3426         g_free (selection);
3427 }
3428
3429 static void
3430 clear_selection (EvView *view)
3431 {
3432         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3433         view->selection_info.selections = NULL;
3434         view->selection_info.in_selection = FALSE;
3435 }
3436
3437
3438 void
3439 ev_view_select_all (EvView *view)
3440 {
3441         int n_pages, i;
3442
3443         /* Disable selection on rotated pages for the 0.4.0 series */
3444         if (view->rotation != 0)
3445                 return;
3446
3447         clear_selection (view);
3448
3449         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3450         for (i = 0; i < n_pages; i++) {
3451                 int width, height;
3452                 EvViewSelection *selection;
3453
3454                 ev_page_cache_get_size (view->page_cache,
3455                                         i,
3456                                         view->rotation,
3457                                         1.0, &width, &height);
3458
3459                 selection = g_new0 (EvViewSelection, 1);
3460                 selection->page = i;
3461                 selection->rect.x1 = selection->rect.y1 = 0;
3462                 selection->rect.x2 = width;
3463                 selection->rect.y2 = height;
3464
3465                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
3466         }
3467
3468         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
3469         gtk_widget_queue_draw (GTK_WIDGET (view));
3470 }
3471
3472 static char *
3473 get_selected_text (EvView *ev_view)
3474 {
3475         GString *text;
3476         GList *l;
3477
3478         text = g_string_new (NULL);
3479
3480         ev_document_doc_mutex_lock ();
3481
3482         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
3483                 EvViewSelection *selection = (EvViewSelection *)l->data;
3484                 char *tmp;
3485
3486                 tmp = ev_document_get_text (ev_view->document,
3487                                             selection->page,
3488                                             &selection->rect);
3489                 g_string_append (text, tmp);
3490                 g_free (tmp);
3491         }
3492
3493         ev_document_doc_mutex_unlock ();
3494
3495         return g_string_free (text, FALSE);
3496 }
3497
3498 void
3499 ev_view_copy (EvView *ev_view)
3500 {
3501         GtkClipboard *clipboard;
3502         char *text;
3503
3504         if (!ev_document_can_get_text (ev_view->document)) {
3505                 return;
3506         }
3507
3508         text = get_selected_text (ev_view);
3509         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3510                                               GDK_SELECTION_CLIPBOARD);
3511         gtk_clipboard_set_text (clipboard, text, -1);
3512         g_free (text);
3513 }
3514
3515 static void
3516 ev_view_primary_get_cb (GtkClipboard     *clipboard,
3517                         GtkSelectionData *selection_data,
3518                         guint             info,
3519                         gpointer          data)
3520 {
3521         EvView *ev_view = EV_VIEW (data);
3522         char *text;
3523
3524         if (!ev_document_can_get_text (ev_view->document)) {
3525                 return;
3526         }
3527
3528         text = get_selected_text (ev_view);
3529         gtk_selection_data_set_text (selection_data, text, -1);
3530         g_free (text);
3531 }
3532
3533 static void
3534 ev_view_primary_clear_cb (GtkClipboard *clipboard,
3535                           gpointer      data)
3536 {
3537         EvView *view = EV_VIEW (data);
3538
3539         clear_selection (view);
3540 }
3541
3542 static void
3543 ev_view_update_primary_selection (EvView *ev_view)
3544 {
3545         GtkClipboard *clipboard;
3546
3547         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3548                                               GDK_SELECTION_PRIMARY);
3549
3550         if (ev_view->selection_info.selections) {
3551                 if (!gtk_clipboard_set_with_owner (clipboard,
3552                                                    targets,
3553                                                    G_N_ELEMENTS (targets),
3554                                                    ev_view_primary_get_cb,
3555                                                    ev_view_primary_clear_cb,
3556                                                    G_OBJECT (ev_view)))
3557                         ev_view_primary_clear_cb (clipboard, ev_view);
3558         } else {
3559                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
3560                         gtk_clipboard_clear (clipboard);
3561         }
3562 }
3563
3564 /*** Cursor operations ***/
3565
3566 static GdkCursor *
3567 ev_view_create_invisible_cursor(void)
3568 {
3569        GdkBitmap *empty;
3570        GdkColor black = { 0, 0, 0, 0 };
3571        static char bits[] = { 0x00 };
3572
3573        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
3574
3575        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
3576 }
3577
3578 static void
3579 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
3580 {
3581         GdkCursor *cursor = NULL;
3582         GdkDisplay *display;
3583         GtkWidget *widget;
3584
3585         if (view->cursor == new_cursor) {
3586                 return;
3587         }
3588
3589         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
3590         display = gtk_widget_get_display (widget);
3591         view->cursor = new_cursor;
3592
3593         switch (new_cursor) {
3594                 case EV_VIEW_CURSOR_NORMAL:
3595                         gdk_window_set_cursor (widget->window, NULL);
3596                         break;
3597                 case EV_VIEW_CURSOR_IBEAM:
3598                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
3599                         break;
3600                 case EV_VIEW_CURSOR_LINK:
3601                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
3602                         break;
3603                 case EV_VIEW_CURSOR_WAIT:
3604                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
3605                         break;
3606                 case EV_VIEW_CURSOR_HIDDEN:
3607                         cursor = ev_view_create_invisible_cursor ();
3608                         break;
3609                 case EV_VIEW_CURSOR_DRAG:
3610                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
3611                         break;
3612         }
3613
3614         if (cursor) {
3615                 gdk_window_set_cursor (widget->window, cursor);
3616                 gdk_cursor_unref (cursor);
3617                 gdk_flush();
3618         }
3619 }
3620
3621 void
3622 ev_view_hide_cursor (EvView *view)
3623 {
3624        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
3625 }
3626
3627 void
3628 ev_view_show_cursor (EvView *view)
3629 {
3630        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3631 }
3632
3633 gboolean
3634 ev_view_next_page (EvView *view)
3635 {
3636         int page;
3637
3638         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3639
3640         page = ev_page_cache_get_current_page (view->page_cache);
3641         page = ev_view_get_dual_page (view) ? page + 2 : page + 1;
3642
3643         if (page < ev_page_cache_get_n_pages (view->page_cache)) {
3644                 ev_page_cache_set_current_page (view->page_cache, page);
3645                 return TRUE;
3646         } else {
3647                 return FALSE;
3648         }
3649 }
3650
3651 gboolean
3652 ev_view_previous_page (EvView *view)
3653 {
3654         int page;
3655
3656         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
3657
3658         page = ev_page_cache_get_current_page (view->page_cache);
3659         page = ev_view_get_dual_page (view) ? page - 2 : page - 1;
3660
3661         if (page >= 0) {
3662                 ev_page_cache_set_current_page (view->page_cache, page);
3663                 return TRUE;
3664         } else {
3665                 return FALSE;
3666         }
3667 }
3668
3669 /*** Enum description for usage in signal ***/
3670
3671 GType
3672 ev_sizing_mode_get_type (void)
3673 {
3674   static GType etype = 0;
3675   if (etype == 0) {
3676     static const GEnumValue values[] = {
3677       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
3678       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
3679       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
3680       { 0, NULL, NULL }
3681     };
3682     etype = g_enum_register_static ("EvSizingMode", values);
3683   }
3684   return etype;
3685 }