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