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_rect_to_view_rect (EvView       *view,
 927                        int           page,
 928                        EvRectangle  *doc_rect,
 929                        GdkRectangle *view_rect)
 930 {
 931         GdkRectangle page_area;
 932         GtkBorder border;
 933         double x, y, w, h;
 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_rect->x1;
 943                 y = doc_rect->y1;
 944                 w = doc_rect->x2 - doc_rect->x1;
 945                 h = doc_rect->y2 - doc_rect->y1;
 946         } else if (view->rotation == 90) {
 947                 x = width - doc_rect->y2;
 948                 y = doc_rect->x1;
 949                 w = doc_rect->y2 - doc_rect->y1;
 950                 h = doc_rect->x2 - doc_rect->x1;
 951         } else if (view->rotation == 180) {
 952                 x = width - doc_rect->x2;
 953                 y = height - doc_rect->y2;
 954                 w = doc_rect->x2 - doc_rect->x1;
 955                 h = doc_rect->y2 - doc_rect->y1;
 956         } else if (view->rotation == 270) {
 957                 x = doc_rect->y1;
 958                 y = height - doc_rect->x2;
 959                 w = doc_rect->y2 - doc_rect->y1;
 960                 h = doc_rect->x2 - doc_rect->x1;
 961         } else {
 962                 g_assert_not_reached ();
 963         }
 964
 965         get_page_extents (view, page, &page_area, &border);
 966
 967         view_rect->x = x * view->scale + page_area.x;
 968         view_rect->y = y * view->scale + page_area.y;
 969         view_rect->width = w * view->scale;
 970         view_rect->height = h * view->scale;
 971 }
 972
 973 static void
 974 find_page_at_location (EvView  *view,
 975                        gdouble  x,
 976                        gdouble  y,
 977                        gint    *page,
 978                        gint    *x_offset,
 979                        gint    *y_offset)
 980 {
 981         int i;
 982
 983         if (view->document == NULL)
 984                 return;
 985
 986         g_assert (page);
 987         g_assert (x_offset);
 988         g_assert (y_offset);
 989
 990         for (i = view->start_page; i <= view->end_page; i++) {
 991                 GdkRectangle page_area;
 992                 GtkBorder border;
 993
 994                 if (! get_page_extents (view, i, &page_area, &border))
 995                         continue;
 996
 997                 if ((x >= page_area.x + border.left) &&
 998                     (x < page_area.x + page_area.width - border.right) &&
 999                     (y >= page_area.y + border.top) &&
1000                     (y < page_area.y + page_area.height - border.bottom)) {
1001                         *page = i;
1002                         *x_offset = x - (page_area.x + border.left);
1003                         *y_offset = y - (page_area.y + border.top);
1004                         return;
1005                 }
1006         }
1007
1008         *page = -1;
1009 }
1010
1011 static gboolean
1012 location_in_text (EvView  *view,
1013                   gdouble  x,
1014                   gdouble  y)
1015 {
1016         GdkRegion *region;
1017         gint page = -1;
1018         gint x_offset = 0, y_offset = 0;
1019
1020         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1021
1022         if (page == -1)
1023                 return FALSE;
1024
1025         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1026
1027         if (region)
1028                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1029         else
1030                 return FALSE;
1031 }
1032
1033 /*** Hyperref ***/
1034 static EvLink *
1035 get_link_at_location (EvView  *view,
1036                       gdouble  x,
1037                       gdouble  y)
1038 {
1039         gint page = -1;
1040         gint x_offset = 0, y_offset = 0;
1041         GList *link_mapping;
1042
1043         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1044
1045         if (page == -1)
1046                 return NULL;
1047
1048         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1049
1050         if (link_mapping)
1051                 return ev_link_mapping_find (link_mapping, x_offset / view->scale, y_offset / view->scale);
1052         else
1053                 return NULL;
1054 }
1055
1056 /* FIXME: standardize this sometime */
1057 static void
1058 go_to_link (EvView *view, EvLink *link)
1059 {
1060         EvLinkType type;
1061         const char *uri;
1062         int page;
1063
1064         type = ev_link_get_link_type (link);
1065
1066         switch (type) {
1067                 case EV_LINK_TYPE_TITLE:
1068                         break;
1069                 case EV_LINK_TYPE_PAGE:
1070                         page = ev_link_get_page (link);
1071                         ev_page_cache_set_current_page (view->page_cache, page);
1072                         break;
1073                 case EV_LINK_TYPE_EXTERNAL_URI:
1074                         uri = ev_link_get_uri (link);
1075                         gnome_vfs_url_show (uri);
1076                         break;
1077         }
1078 }
1079
1080 static char *
1081 tip_from_link (EvView *view, EvLink *link)
1082 {
1083         EvLinkType type;
1084         char *msg = NULL;
1085         char *page_label;
1086
1087         type = ev_link_get_link_type (link);
1088
1089         switch (type) {
1090                 case EV_LINK_TYPE_TITLE:
1091                         if (ev_link_get_title (link))
1092                                 msg = g_strdup (ev_link_get_title (link));
1093                         break;
1094                 case EV_LINK_TYPE_PAGE:
1095                         page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link));
1096                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1097                         g_free (page_label);
1098                         break;
1099                 case EV_LINK_TYPE_EXTERNAL_URI:
1100                         msg = g_strdup (ev_link_get_uri (link));
1101                         break;
1102                 default:
1103                         break;
1104         }
1105
1106         return msg;
1107 }
1108
1109
1110 /*** GtkWidget implementation ***/
1111
1112 static void
1113 ev_view_size_request_continuous_dual_page (EvView         *view,
1114                                            GtkRequisition *requisition)
1115 {
1116         int max_width;
1117         gint n_pages;
1118         GtkBorder border;
1119
1120         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1121                                      view->scale, &max_width);
1122         compute_border (view, max_width, max_width, &border);
1123
1124         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1125
1126         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1127         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1128
1129         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1130                 requisition->width = 1;
1131         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1132                 requisition->width = 1;
1133                 /* FIXME: This could actually be set on one page docs or docs
1134                  * with a strange aspect ratio. */
1135                 /* requisition->height = 1;*/
1136         }
1137 }
1138
1139 static void
1140 ev_view_size_request_continuous (EvView         *view,
1141                                  GtkRequisition *requisition)
1142 {
1143         int max_width;
1144         int n_pages;
1145         GtkBorder border;
1146
1147
1148         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1149                                      view->scale, &max_width);
1150         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1151         compute_border (view, max_width, max_width, &border);
1152
1153         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1154         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1155
1156         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1157                 requisition->width = 1;
1158         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1159                 requisition->width = 1;
1160                 /* FIXME: This could actually be set on one page docs or docs
1161                  * with a strange aspect ratio. */
1162                 /* requisition->height = 1;*/
1163         }
1164 }
1165
1166 static void
1167 ev_view_size_request_dual_page (EvView         *view,
1168                                 GtkRequisition *requisition)
1169 {
1170         GtkBorder border;
1171         gint width, height;
1172
1173         /* Find the largest of the two. */
1174         ev_page_cache_get_size (view->page_cache,
1175                                 view->current_page,
1176                                 view->rotation,
1177                                 view->scale,
1178                                 &width, &height);
1179         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1180                 gint width_2, height_2;
1181                 ev_page_cache_get_size (view->page_cache,
1182                                         view->current_page + 1,
1183                                         view->rotation,
1184                                         view->scale,
1185                                         &width_2, &height_2);
1186                 if (width_2 > width) {
1187                         width = width_2;
1188                         height = height_2;
1189                 }
1190         }
1191         compute_border (view, width, height, &border);
1192
1193         requisition->width = ((width + border.left + border.right) * 2) +
1194                 (view->spacing * 3);
1195         requisition->height = (height + border.top + border.bottom) +
1196                 (view->spacing * 2);
1197
1198         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1199                 requisition->width = 1;
1200         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1201                 requisition->width = 1;
1202                 requisition->height = 1;
1203         }
1204 }
1205
1206 static void
1207 ev_view_size_request_single_page (EvView         *view,
1208                                   GtkRequisition *requisition)
1209 {
1210         GtkBorder border;
1211         gint width, height;
1212
1213         ev_page_cache_get_size (view->page_cache,
1214                                 view->current_page,
1215                                 view->rotation,
1216                                 view->scale,
1217                                 &width, &height);
1218         compute_border (view, width, height, &border);
1219
1220         requisition->width = width + border.left + border.right + (2 * view->spacing);
1221         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1222
1223         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1224                 requisition->width = 1;
1225                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1226         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1227                 requisition->width = 1;
1228                 requisition->height = 1;
1229         }
1230 }
1231
1232 static void
1233 ev_view_size_request (GtkWidget      *widget,
1234                       GtkRequisition *requisition)
1235 {
1236         EvView *view = EV_VIEW (widget);
1237
1238         if (view->document == NULL) {
1239                 requisition->width = 1;
1240                 requisition->height = 1;
1241                 return;
1242         }
1243
1244         if (view->presentation) {
1245                 requisition->width = 1;
1246                 requisition->height = 1;
1247                 return;
1248         }
1249
1250         if (view->continuous && view->dual_page)
1251                 ev_view_size_request_continuous_dual_page (view, requisition);
1252         else if (view->continuous)
1253                 ev_view_size_request_continuous (view, requisition);
1254         else if (view->dual_page)
1255                 ev_view_size_request_dual_page (view, requisition);
1256         else
1257                 ev_view_size_request_single_page (view, requisition);
1258 }
1259
1260 static void
1261 ev_view_size_allocate (GtkWidget      *widget,
1262                        GtkAllocation  *allocation)
1263 {
1264         EvView *view = EV_VIEW (widget);
1265
1266         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1267                   view->sizing_mode == EV_SIZING_BEST_FIT) {
1268
1269                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1270
1271                 ev_view_size_request (widget, &widget->requisition);
1272         }
1273
1274         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1275         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1276
1277         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1278         view->pending_resize = FALSE;
1279
1280         if (view->document)
1281                 view_update_range_and_current_page (view);
1282
1283         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1284 }
1285
1286 static void
1287 ev_view_realize (GtkWidget *widget)
1288 {
1289         EvView *view = EV_VIEW (widget);
1290         GdkWindowAttr attributes;
1291
1292         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1293
1294
1295         attributes.window_type = GDK_WINDOW_CHILD;
1296         attributes.wclass = GDK_INPUT_OUTPUT;
1297         attributes.visual = gtk_widget_get_visual (widget);
1298         attributes.colormap = gtk_widget_get_colormap (widget);
1299
1300         attributes.x = widget->allocation.x;
1301         attributes.y = widget->allocation.y;
1302         attributes.width = widget->allocation.width;
1303         attributes.height = widget->allocation.height;
1304         attributes.event_mask = GDK_EXPOSURE_MASK |
1305                                 GDK_BUTTON_PRESS_MASK |
1306                                 GDK_BUTTON_RELEASE_MASK |
1307                                 GDK_SCROLL_MASK |
1308                                 GDK_KEY_PRESS_MASK |
1309                                 GDK_POINTER_MOTION_MASK |
1310                                 GDK_LEAVE_NOTIFY_MASK;
1311
1312         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1313                                          &attributes,
1314                                          GDK_WA_X | GDK_WA_Y |
1315                                          GDK_WA_COLORMAP |
1316                                          GDK_WA_VISUAL);
1317         gdk_window_set_user_data (widget->window, widget);
1318         widget->style = gtk_style_attach (widget->style, widget->window);
1319
1320         if (view->presentation)
1321                 gdk_window_set_background (widget->window, &widget->style->black);
1322         else
1323                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1324 }
1325
1326 static void
1327 ev_view_unrealize (GtkWidget *widget)
1328 {
1329         GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget);
1330 }
1331
1332 static gboolean
1333 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1334 {
1335         EvView *view = EV_VIEW (widget);
1336
1337         if ((event->state & GDK_CONTROL_MASK) != 0) {
1338
1339                  ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1340
1341                  if (event->direction == GDK_SCROLL_UP ||
1342                         event->direction == GDK_SCROLL_LEFT) {
1343                             if (ev_view_can_zoom_in (view)) {
1344                                     ev_view_zoom_in (view);
1345                             }
1346                  } else {
1347                             if (ev_view_can_zoom_out (view)) {
1348                                     ev_view_zoom_out (view);
1349                             }
1350                  }
1351                  return TRUE;
1352         }
1353
1354         if ((event->state & GDK_SHIFT_MASK) != 0) {
1355                 if (event->direction == GDK_SCROLL_UP)
1356                         event->direction = GDK_SCROLL_LEFT;
1357                 if (event->direction == GDK_SCROLL_DOWN)
1358                         event->direction = GDK_SCROLL_RIGHT;
1359         }
1360
1361         return FALSE;
1362 }
1363
1364 static EvViewSelection *
1365 find_selection_for_page (EvView *view,
1366                          gint    page)
1367 {
1368         GList *list;
1369
1370         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1371                 EvViewSelection *selection;
1372
1373                 selection = (EvViewSelection *) list->data;
1374
1375                 if (selection->page == page)
1376                         return selection;
1377         }
1378
1379         return NULL;
1380 }
1381
1382 static gboolean
1383 ev_view_expose_event (GtkWidget      *widget,
1384                       GdkEventExpose *event)
1385 {
1386         EvView *view = EV_VIEW (widget);
1387         int i;
1388
1389         if (view->document == NULL)
1390                 return FALSE;
1391
1392         for (i = view->start_page; i <= view->end_page; i++) {
1393                 GdkRectangle page_area;
1394                 GtkBorder border;
1395
1396                 if (!get_page_extents (view, i, &page_area, &border))
1397                         continue;
1398
1399                 page_area.x -= view->scroll_x;
1400                 page_area.y -= view->scroll_y;
1401
1402                 draw_one_page (view, i, &page_area, &border, &(event->area));
1403
1404                 if (EV_IS_DOCUMENT_FIND (view->document))
1405                         highlight_find_results (view, i);
1406         }
1407
1408         return FALSE;
1409 }
1410
1411 static gboolean
1412 ev_view_button_press_event (GtkWidget      *widget,
1413                             GdkEventButton *event)
1414 {
1415         EvView *view = EV_VIEW (widget);
1416
1417         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1418                 gtk_widget_grab_focus (widget);
1419         }
1420
1421         view->pressed_button = event->button;
1422
1423         switch (event->button) {
1424                 case 1:
1425                         if (view->selection_info.selections) {
1426                                 clear_selection (view);
1427                                 gtk_widget_queue_draw (widget);
1428                         }
1429
1430                         view->selection_info.start.x = event->x + view->scroll_x;
1431                         view->selection_info.start.y = event->y + view->scroll_y;
1432                         return TRUE;
1433                 case 2:
1434                         /* use root coordinates as reference point because
1435                          * scrolling changes window relative coordinates */
1436                         view->drag_info.start.x = event->x_root;
1437                         view->drag_info.start.y = event->y_root;
1438                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1439                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1440
1441                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1442
1443                         return TRUE;
1444         }
1445
1446         return FALSE;
1447 }
1448
1449
1450 static gboolean
1451 selection_update_idle_cb (EvView *view)
1452 {
1453         GdkPoint point;
1454         point.x = view->motion_x;
1455         point.y = view->motion_y;
1456         compute_selections (view, &view->selection_info.start, &point);
1457
1458         view->selection_update_id = 0;
1459         return FALSE;
1460 }
1461
1462 static gboolean
1463 ev_view_motion_notify_event (GtkWidget      *widget,
1464                              GdkEventMotion *event)
1465 {
1466         EvView *view = EV_VIEW (widget);
1467
1468         if (!view->document)
1469                 return FALSE;
1470
1471         /* For the Evince 0.4.x release, we limit selection to un-rotated
1472          * documents only.
1473          */
1474         if (view->pressed_button == 1 &&
1475             view->rotation == 0) {
1476                 view->selection_info.in_selection = TRUE;
1477                 view->motion_x = event->x + view->scroll_x;
1478                 view->motion_y = event->y + view->scroll_y;
1479
1480                 /* Queue an idle to handle the motion.  We do this because
1481                  * handling any selection events in the motion could be slower
1482                  * than new motion events reach us.  We always put it in the
1483                  * idle to make sure we catch up and don't visibly lag the
1484                  * mouse. */
1485                 if (! view->selection_update_id)
1486                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
1487
1488                 return TRUE;
1489         } else if (view->pressed_button == 2) {
1490                 if (!view->drag_info.in_drag) {
1491                         gboolean start;
1492
1493                         start = gtk_drag_check_threshold (widget,
1494                                                           view->drag_info.start.x,
1495                                                           view->drag_info.start.y,
1496                                                           event->x_root,
1497                                                           event->y_root);
1498                         view->drag_info.in_drag = start;
1499                 }
1500
1501                 if (view->drag_info.in_drag) {
1502                         int dx, dy;
1503                         gdouble dhadj_value, dvadj_value;
1504
1505                         dx = event->x_root - view->drag_info.start.x;
1506                         dy = event->y_root - view->drag_info.start.y;
1507
1508                         dhadj_value = view->hadjustment->page_size *
1509                                       (gdouble)dx / widget->allocation.width;
1510                         dvadj_value = view->vadjustment->page_size *
1511                                       (gdouble)dy / widget->allocation.height;
1512
1513                         /* clamp scrolling to visible area */
1514                         gtk_adjustment_set_value (view->hadjustment,
1515                                                   MIN(view->drag_info.hadj - dhadj_value,
1516                                                       view->hadjustment->upper -
1517                                                       view->hadjustment->page_size));
1518                         gtk_adjustment_set_value (view->vadjustment,
1519                                                   MIN(view->drag_info.vadj - dvadj_value,
1520                                                       view->vadjustment->upper -
1521                                                       view->vadjustment->page_size));
1522
1523                         return TRUE;
1524                 }
1525         /* For the Evince 0.4.x release, we limit links to un-rotated documents
1526          * only.
1527          */
1528         } else if (view->pressed_button <= 0 &&
1529                    view->rotation == 0) {
1530                 EvLink *link;
1531
1532                 link = get_link_at_location (view, event->x + view->scroll_x, event->y + view->scroll_y);
1533
1534                 if (!link && view->link_tooltip) {
1535                         gtk_widget_hide (view->link_tooltip);
1536                 }
1537
1538                 if (link) {
1539                         char *msg = tip_from_link (view, link);
1540
1541                         if (view->link_tooltip == NULL) {
1542                                 view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1543                         }
1544                         ev_tooltip_set_position (EV_TOOLTIP (view->link_tooltip), event->x, event->y);
1545                         ev_tooltip_set_text (EV_TOOLTIP (view->link_tooltip), msg);
1546                         gtk_widget_show (view->link_tooltip);
1547                         g_free (msg);
1548
1549                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1550                 } else if (location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y)) {
1551                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1552                 } else {
1553                         ev_view_set_status (view, NULL);
1554                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1555                             view->cursor == EV_VIEW_CURSOR_IBEAM)
1556                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1557                 }
1558                 return TRUE;
1559         }
1560
1561         return FALSE;
1562 }
1563
1564 static gboolean
1565 ev_view_button_release_event (GtkWidget      *widget,
1566                               GdkEventButton *event)
1567 {
1568         EvView *view = EV_VIEW (widget);
1569
1570         if (view->pressed_button == 2) {
1571                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1572         }
1573
1574         view->pressed_button = -1;
1575         view->drag_info.in_drag = FALSE;
1576
1577         if (view->selection_info.selections) {
1578                 ev_view_update_primary_selection (view);
1579         } else if (view->document) {
1580                 EvLink *link;
1581
1582                 link = get_link_at_location (view, event->x + view->scroll_x, event->y + view->scroll_y);
1583                 if (link) {
1584                         go_to_link (view, link);
1585                 }
1586         }
1587
1588         return FALSE;
1589 }
1590
1591 static gint
1592 ev_view_focus_in (GtkWidget     *widget,
1593                   GdkEventFocus *event)
1594 {
1595         if (EV_VIEW (widget)->pixbuf_cache)
1596                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1597         gtk_widget_queue_draw (widget);
1598
1599         return FALSE;
1600 }
1601
1602 static gint
1603 ev_view_focus_out (GtkWidget     *widget,
1604                      GdkEventFocus *event)
1605 {
1606         if (EV_VIEW (widget)->pixbuf_cache)
1607                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1608         gtk_widget_queue_draw (widget);
1609
1610         return FALSE;
1611 }
1612
1613 static gboolean
1614 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
1615 {
1616         EvView *view = EV_VIEW (widget);
1617
1618         ev_view_set_status (view, NULL);
1619
1620         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1621             view->cursor == EV_VIEW_CURSOR_IBEAM)
1622                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1623
1624         return FALSE;
1625 }
1626
1627 static void
1628 ev_view_style_set (GtkWidget *widget,
1629                    GtkStyle  *old_style)
1630 {
1631         if (EV_VIEW (widget)->pixbuf_cache)
1632                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1633
1634         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
1635 }
1636
1637
1638 /*** Drawing ***/
1639
1640 static guint32
1641 ev_gdk_color_to_rgb (const GdkColor *color)
1642 {
1643   guint32 result;
1644   result = (0xff0000 | (color->red & 0xff00));
1645   result <<= 8;
1646   result |= ((color->green & 0xff00) | (color->blue >> 8));
1647   return result;
1648 }
1649
1650 static void
1651 draw_rubberband (GtkWidget *widget, GdkWindow *window,
1652                  const GdkRectangle *rect, guchar alpha)
1653 {
1654         GdkGC *gc;
1655         GdkPixbuf *pixbuf;
1656         GdkColor *fill_color_gdk;
1657         guint fill_color;
1658
1659         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
1660         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
1661
1662         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
1663                                  rect->width, rect->height);
1664         gdk_pixbuf_fill (pixbuf, fill_color);
1665
1666         gdk_draw_pixbuf (window, NULL, pixbuf,
1667                          0, 0,
1668                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1669                          rect->width, rect->height,
1670                          GDK_RGB_DITHER_NONE,
1671                          0, 0);
1672
1673         g_object_unref (pixbuf);
1674
1675         gc = gdk_gc_new (window);
1676         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
1677         gdk_draw_rectangle (window, gc, FALSE,
1678                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1679                             rect->width - 1,
1680                             rect->height - 1);
1681         g_object_unref (gc);
1682
1683         gdk_color_free (fill_color_gdk);
1684 }
1685
1686
1687 static void
1688 highlight_find_results (EvView *view, int page)
1689 {
1690         EvDocumentFind *find;
1691         int i, results = 0;
1692
1693         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
1694
1695         find = EV_DOCUMENT_FIND (view->document);
1696
1697         results = ev_document_find_get_n_results (find, page);
1698
1699         for (i = 0; i < results; i++) {
1700                 EvRectangle rectangle;
1701                 GdkRectangle view_rectangle;
1702                 guchar alpha;
1703
1704                 if (i == view->find_result && page == view->find_page) {
1705                         alpha = 0x90;
1706                 } else {
1707                         alpha = 0x20;
1708                 }
1709
1710                 ev_document_find_get_result (find, page, i, &rectangle);
1711                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
1712                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
1713                                  &view_rectangle, alpha);
1714         }
1715 }
1716
1717 static void
1718 draw_loading_text (EvView       *view,
1719                    GdkRectangle *page_area,
1720                    GdkRectangle *expose_area)
1721 {
1722         PangoLayout *layout;
1723         PangoFontDescription *font_desc;
1724         PangoRectangle logical_rect;
1725         double real_scale;
1726         int target_width;
1727
1728         const char *loading_text = _("Loading...");
1729
1730         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
1731
1732         font_desc = pango_font_description_new ();
1733
1734
1735         /* We set the font to be 10 points, get the size, and scale appropriately */
1736         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
1737         pango_layout_set_font_description (layout, font_desc);
1738         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
1739
1740         /* Make sure we fit the middle of the page */
1741         target_width = MAX (page_area->width / 2, 1);
1742         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
1743         pango_font_description_set_size (font_desc, (int)real_scale);
1744         pango_layout_set_font_description (layout, font_desc);
1745         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
1746
1747         gtk_paint_layout (GTK_WIDGET (view)->style,
1748                           GTK_WIDGET (view)->window,
1749                           GTK_WIDGET_STATE (view),
1750                           FALSE,
1751                           page_area,
1752                           GTK_WIDGET (view),
1753                           NULL,
1754                           page_area->x + (target_width/2),
1755                           page_area->y + (page_area->height - logical_rect.height) / 2,
1756                           layout);
1757
1758         pango_font_description_free (font_desc);
1759         g_object_unref (layout);
1760 }
1761
1762 static void
1763 draw_one_page (EvView          *view,
1764                gint             page,
1765                GdkRectangle    *page_area,
1766                GtkBorder       *border,
1767                GdkRectangle    *expose_area)
1768 {
1769         gint width, height;
1770         GdkPixbuf *current_pixbuf;
1771         GdkRectangle overlap;
1772         GdkRectangle real_page_area;
1773         EvViewSelection *selection;
1774
1775         g_assert (view->document);
1776         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
1777                 return;
1778
1779         selection = find_selection_for_page (view, page);
1780         ev_page_cache_get_size (view->page_cache,
1781                                 page, view->rotation,
1782                                 view->scale,
1783                                 &width, &height);
1784         /* Render the document itself */
1785         real_page_area = *page_area;
1786
1787         real_page_area.x += border->left;
1788         real_page_area.y += border->top;
1789         real_page_area.width -= (border->left + border->right);
1790         real_page_area.height -= (border->top + border->bottom);
1791
1792         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
1793                                          GTK_WIDGET (view),
1794                                          page_area, border);
1795
1796         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
1797                 GdkPixbuf *selection_pixbuf = NULL;
1798                 GdkPixbuf *scaled_image;
1799                 GdkPixbuf *scaled_selection;
1800
1801                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
1802
1803                 /* Get the selection pixbuf iff we have something to draw */
1804                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
1805                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
1806                                                                                  page,
1807                                                                                  view->scale,
1808                                                                                  NULL);
1809
1810                 if (current_pixbuf == NULL)
1811                         scaled_image = NULL;
1812                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
1813                          height == gdk_pixbuf_get_height (current_pixbuf))
1814                         scaled_image = g_object_ref (current_pixbuf);
1815                 else
1816                         /* FIXME: We don't want to scale the whole area, just the right
1817                          * area of it */
1818                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
1819                                                                 width, height,
1820                                                                 GDK_INTERP_NEAREST);
1821
1822                 if (selection_pixbuf == NULL)
1823                         scaled_selection = NULL;
1824                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
1825                          height == gdk_pixbuf_get_height (selection_pixbuf))
1826                         scaled_selection = g_object_ref (selection_pixbuf);
1827                 else
1828                         /* FIXME: We don't want to scale the whole area, just the right
1829                          * area of it */
1830                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
1831                                                                     width, height,
1832                                                                     GDK_INTERP_NEAREST);
1833
1834                 if (scaled_image) {
1835                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
1836                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
1837                                          scaled_image,
1838                                          overlap.x - real_page_area.x,
1839                                          overlap.y - real_page_area.y,
1840                                          overlap.x, overlap.y,
1841                                          overlap.width, overlap.height,
1842                                          GDK_RGB_DITHER_NORMAL,
1843                                          0, 0);
1844                         g_object_unref (scaled_image);
1845                 } else {
1846                         draw_loading_text (view,
1847                                            &real_page_area,
1848                                            expose_area);
1849                 }
1850
1851                 if (scaled_selection) {
1852                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
1853                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
1854                                          scaled_selection,
1855                                          overlap.x - real_page_area.x,
1856                                          overlap.y - real_page_area.y,
1857                                          overlap.x, overlap.y,
1858                                          overlap.width, overlap.height,
1859                                          GDK_RGB_DITHER_NORMAL,
1860                                          0, 0);
1861                         g_object_unref (scaled_selection);
1862                 }
1863         }
1864 }
1865
1866 /*** GObject functions ***/
1867
1868 static void
1869 ev_view_finalize (GObject *object)
1870 {
1871         EvView *view = EV_VIEW (object);
1872
1873         LOG ("Finalize");
1874
1875         g_free (view->status);
1876         g_free (view->find_status);
1877
1878         clear_selection (view);
1879
1880         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
1881 }
1882
1883 static void
1884 ev_view_destroy (GtkObject *object)
1885 {
1886         EvView *view = EV_VIEW (object);
1887
1888         if (view->document) {
1889                 g_object_unref (view->document);
1890                 view->document = NULL;
1891         }
1892         if (view->pixbuf_cache) {
1893                 g_object_unref (view->pixbuf_cache);
1894                 view->pixbuf_cache = NULL;
1895         }
1896         if (view->link_tooltip) {
1897                 gtk_widget_destroy (view->link_tooltip);
1898                 view->link_tooltip = NULL;
1899         }
1900
1901         ev_view_set_scroll_adjustments (view, NULL, NULL);
1902
1903         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
1904 }
1905
1906 static void
1907 ev_view_set_property (GObject      *object,
1908                       guint         prop_id,
1909                       const GValue *value,
1910                       GParamSpec   *pspec)
1911 {
1912         EvView *view = EV_VIEW (object);
1913
1914         switch (prop_id)
1915         {
1916         case PROP_CONTINUOUS:
1917                 ev_view_set_continuous (view, g_value_get_boolean (value));
1918                 break;
1919         case PROP_DUAL_PAGE:
1920                 ev_view_set_dual_page (view, g_value_get_boolean (value));
1921                 break;
1922         case PROP_FULLSCREEN:
1923                 ev_view_set_fullscreen (view, g_value_get_boolean (value));
1924                 break;
1925         case PROP_PRESENTATION:
1926                 ev_view_set_presentation (view, g_value_get_boolean (value));
1927                 break;
1928         case PROP_SIZING_MODE:
1929                 ev_view_set_sizing_mode (view, g_value_get_enum (value));
1930                 break;
1931         case PROP_ZOOM:
1932                 ev_view_set_zoom (view, g_value_get_double (value), FALSE);
1933                 break;
1934         case PROP_ROTATION:
1935                 ev_view_set_rotation (view, g_value_get_int (value));
1936                 break;
1937         default:
1938                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1939         }
1940 }
1941
1942 static void
1943 ev_view_get_property (GObject *object,
1944                       guint prop_id,
1945                       GValue *value,
1946                       GParamSpec *pspec)
1947 {
1948         EvView *view = EV_VIEW (object);
1949
1950         switch (prop_id)
1951         {
1952         case PROP_STATUS:
1953                 g_value_set_string (value, view->status);
1954                 break;
1955         case PROP_FIND_STATUS:
1956                 g_value_set_string (value, view->status);
1957                 break;
1958         case PROP_CONTINUOUS:
1959                 g_value_set_boolean (value, view->continuous);
1960                 break;
1961         case PROP_DUAL_PAGE:
1962                 g_value_set_boolean (value, view->dual_page);
1963                 break;
1964         case PROP_FULLSCREEN:
1965                 g_value_set_boolean (value, view->fullscreen);
1966                 break;
1967         case PROP_PRESENTATION:
1968                 g_value_set_boolean (value, view->presentation);
1969                 break;
1970         case PROP_SIZING_MODE:
1971                 g_value_set_enum (value, view->sizing_mode);
1972                 break;
1973         case PROP_ZOOM:
1974                 g_value_set_double (value, view->scale);
1975                 break;
1976         case PROP_ROTATION:
1977                 g_value_set_int (value, view->rotation);
1978                 break;
1979         default:
1980                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1981         }
1982 }
1983
1984 static void
1985 ev_view_class_init (EvViewClass *class)
1986 {
1987         GObjectClass *object_class = G_OBJECT_CLASS (class);
1988         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
1989         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
1990         GtkBindingSet *binding_set;
1991
1992         object_class->finalize = ev_view_finalize;
1993         object_class->set_property = ev_view_set_property;
1994         object_class->get_property = ev_view_get_property;
1995
1996         widget_class->expose_event = ev_view_expose_event;
1997         widget_class->button_press_event = ev_view_button_press_event;
1998         widget_class->motion_notify_event = ev_view_motion_notify_event;
1999         widget_class->button_release_event = ev_view_button_release_event;
2000         widget_class->focus_in_event = ev_view_focus_in;
2001         widget_class->focus_out_event = ev_view_focus_out;
2002         widget_class->size_request = ev_view_size_request;
2003         widget_class->size_allocate = ev_view_size_allocate;
2004         widget_class->realize = ev_view_realize;
2005         widget_class->unrealize = ev_view_unrealize;
2006         widget_class->scroll_event = ev_view_scroll_event;
2007         widget_class->leave_notify_event = ev_view_leave_notify_event;
2008         widget_class->style_set = ev_view_style_set;
2009         gtk_object_class->destroy = ev_view_destroy;
2010
2011         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
2012         class->binding_activated = ev_view_binding_activated;
2013
2014         widget_class->set_scroll_adjustments_signal =
2015             g_signal_new ("set-scroll-adjustments",
2016                           G_OBJECT_CLASS_TYPE (object_class),
2017                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2018                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
2019                           NULL, NULL,
2020                           ev_marshal_VOID__OBJECT_OBJECT,
2021                           G_TYPE_NONE, 2,
2022                           GTK_TYPE_ADJUSTMENT,
2023                           GTK_TYPE_ADJUSTMENT);
2024
2025         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
2026                          G_TYPE_FROM_CLASS (object_class),
2027                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2028                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
2029                          NULL, NULL,
2030                          ev_marshal_VOID__ENUM_BOOLEAN,
2031                          G_TYPE_NONE, 2,
2032                          GTK_TYPE_SCROLL_TYPE,
2033                          G_TYPE_BOOLEAN);
2034
2035         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
2036                          G_TYPE_FROM_CLASS (object_class),
2037                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2038                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
2039                          NULL, NULL,
2040                          ev_marshal_VOID__VOID,
2041                          G_TYPE_NONE, 0, G_TYPE_NONE);
2042
2043         g_object_class_install_property (object_class,
2044                                          PROP_STATUS,
2045                                          g_param_spec_string ("status",
2046                                                               "Status Message",
2047                                                               "The status message",
2048                                                               NULL,
2049                                                               G_PARAM_READABLE));
2050
2051         g_object_class_install_property (object_class,
2052                                          PROP_FIND_STATUS,
2053                                          g_param_spec_string ("find-status",
2054                                                               "Find Status Message",
2055                                                               "The find status message",
2056                                                               NULL,
2057                                                               G_PARAM_READABLE));
2058
2059         g_object_class_install_property (object_class,
2060                                          PROP_CONTINUOUS,
2061                                          g_param_spec_boolean ("continuous",
2062                                                                "Continuous",
2063                                                                "Continuous scrolling mode",
2064                                                                TRUE,
2065                                                                G_PARAM_READWRITE));
2066
2067         g_object_class_install_property (object_class,
2068                                          PROP_DUAL_PAGE,
2069                                          g_param_spec_boolean ("dual-page",
2070                                                                "Dual Page",
2071                                                                "Two pages visible at once",
2072                                                                FALSE,
2073                                                                G_PARAM_READWRITE));
2074         g_object_class_install_property (object_class,
2075                                          PROP_FULLSCREEN,
2076                                          g_param_spec_boolean ("fullscreen",
2077                                                                "Full Screen",
2078                                                                "Draw page in a fullscreen fashion",
2079                                                                FALSE,
2080                                                                G_PARAM_READWRITE));
2081         g_object_class_install_property (object_class,
2082                                          PROP_PRESENTATION,
2083                                          g_param_spec_boolean ("presentation",
2084                                                                "Presentation",
2085                                                                "Draw page in presentation mode",
2086                                                                TRUE,
2087                                                                G_PARAM_READWRITE));
2088
2089         g_object_class_install_property (object_class,
2090                                          PROP_SIZING_MODE,
2091                                          g_param_spec_enum ("sizing-mode",
2092                                                             "Sizing Mode",
2093                                                             "Sizing Mode",
2094                                                             EV_TYPE_SIZING_MODE,
2095                                                             EV_SIZING_FIT_WIDTH,
2096                                                             G_PARAM_READWRITE));
2097
2098         g_object_class_install_property (object_class,
2099                                          PROP_ZOOM,
2100                                          g_param_spec_double ("zoom",
2101                                                               "Zoom factor",
2102                                                                "Zoom factor",
2103                                                                MIN_SCALE,
2104                                                                MAX_SCALE,
2105                                                                1.0,
2106                                                                G_PARAM_READWRITE));
2107         g_object_class_install_property (object_class,
2108                                          PROP_ROTATION,
2109                                          g_param_spec_double ("rotation",
2110                                                               "Rotation",
2111                                                                "Rotation",
2112                                                                0,
2113                                                                360,
2114                                                                0,
2115                                                                G_PARAM_READWRITE));
2116
2117         binding_set = gtk_binding_set_by_class (class);
2118
2119         add_scroll_binding_keypad (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
2120         add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
2121         add_scroll_binding_keypad (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
2122         add_scroll_binding_keypad (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
2123 }
2124
2125 static void
2126 ev_view_init (EvView *view)
2127 {
2128         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
2129
2130         view->spacing = 5;
2131         view->scale = 1.0;
2132         view->current_page = 0;
2133         view->pressed_button = -1;
2134         view->cursor = EV_VIEW_CURSOR_NORMAL;
2135         view->drag_info.in_drag = FALSE;
2136         view->selection_info.in_selection = FALSE;
2137
2138         view->selection_mode = EV_VIEW_SELECTION_TEXT;
2139         view->continuous = TRUE;
2140         view->dual_page = FALSE;
2141         view->presentation = FALSE;
2142         view->fullscreen = FALSE;
2143         view->sizing_mode = EV_SIZING_FIT_WIDTH;
2144         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2145 }
2146
2147 /*** Callbacks ***/
2148
2149 static void
2150 find_changed_cb (EvDocument *document, int page, EvView *view)
2151 {
2152         jump_to_find_page (view, EV_VIEW_FIND_NEXT);
2153         jump_to_find_result (view);
2154         update_find_status_message (view);
2155
2156         if (view->current_page == page)
2157                 gtk_widget_queue_draw (GTK_WIDGET (view));
2158 }
2159
2160 static void
2161 job_finished_cb (EvPixbufCache *pixbuf_cache,
2162                  EvView        *view)
2163 {
2164         gtk_widget_queue_draw (GTK_WIDGET (view));
2165 }
2166
2167 static void
2168 page_changed_cb (EvPageCache *page_cache,
2169                  int          new_page,
2170                  EvView      *view)
2171 {
2172         if (view->current_page != new_page) {
2173
2174                 view->current_page = new_page;
2175                 view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2176                 gtk_widget_queue_resize (GTK_WIDGET (view));
2177
2178                 if (EV_IS_DOCUMENT_FIND (view->document)) {
2179                         view->find_page = new_page;
2180                         view->find_result = 0;
2181                         update_find_status_message (view);
2182                 }
2183         }
2184 }
2185
2186 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
2187                                          EvView *view)
2188 {
2189         int dx = 0, dy = 0;
2190
2191         if (! GTK_WIDGET_REALIZED (view))
2192                 return;
2193
2194         if (view->hadjustment) {
2195                 dx = view->scroll_x - (int) view->hadjustment->value;
2196                 view->scroll_x = (int) view->hadjustment->value;
2197         } else {
2198                 view->scroll_x = 0;
2199         }
2200
2201         if (view->vadjustment) {
2202                 dy = view->scroll_y - (int) view->vadjustment->value;
2203                 view->scroll_y = (int) view->vadjustment->value;
2204         } else {
2205                 view->scroll_y = 0;
2206         }
2207
2208
2209         if (view->pending_resize)
2210                 gtk_widget_queue_draw (GTK_WIDGET (view));
2211         else
2212                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
2213
2214
2215         if (view->document)
2216                 view_update_range_and_current_page (view);
2217 }
2218
2219 GtkWidget*
2220 ev_view_new (void)
2221 {
2222         GtkWidget *view;
2223
2224         view = g_object_new (EV_TYPE_VIEW, NULL);
2225
2226         return view;
2227 }
2228
2229 static void
2230 setup_caches (EvView *view)
2231 {
2232         view->page_cache = ev_page_cache_get (view->document);
2233         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
2234         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
2235         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
2236 }
2237
2238 static void
2239 clear_caches (EvView *view)
2240 {
2241         if (view->pixbuf_cache) {
2242                 g_object_unref (view->pixbuf_cache);
2243                 view->pixbuf_cache = NULL;
2244         }
2245
2246         if (view->page_cache) {
2247                 view->page_cache = NULL;
2248         }
2249 }
2250
2251 void
2252 ev_view_set_document (EvView     *view,
2253                       EvDocument *document)
2254 {
2255         g_return_if_fail (EV_IS_VIEW (view));
2256
2257         if (document != view->document) {
2258                 clear_caches (view);
2259
2260                 if (view->document) {
2261                         g_signal_handlers_disconnect_by_func (view->document,
2262                                                               find_changed_cb,
2263                                                               view);
2264                         g_object_unref (view->document);
2265                         view->page_cache = NULL;
2266
2267                 }
2268
2269                 view->document = document;
2270                 view->find_page = 0;
2271                 view->find_result = 0;
2272
2273                 if (view->document) {
2274                         g_object_ref (view->document);
2275                         if (EV_IS_DOCUMENT_FIND (view->document)) {
2276                                 g_signal_connect (view->document,
2277                                                   "find_changed",
2278                                                   G_CALLBACK (find_changed_cb),
2279                                                   view);
2280                         }
2281
2282                         setup_caches (view);
2283                 }
2284
2285                 gtk_widget_queue_resize (GTK_WIDGET (view));
2286         }
2287 }
2288
2289 /*** Zoom and sizing mode ***/
2290
2291 #define EPSILON 0.0000001
2292 void
2293 ev_view_set_zoom (EvView   *view,
2294                   double    factor,
2295                   gboolean  relative)
2296 {
2297         double scale;
2298
2299         if (relative)
2300                 scale = view->scale * factor;
2301         else
2302                 scale = factor;
2303
2304         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
2305
2306         if (ABS (view->scale - scale) < EPSILON)
2307                 return;
2308
2309         view->scale = scale;
2310         view->pending_resize = TRUE;
2311
2312         gtk_widget_queue_resize (GTK_WIDGET (view));
2313
2314         g_object_notify (G_OBJECT (view), "zoom");
2315 }
2316
2317 double
2318 ev_view_get_zoom (EvView *view)
2319 {
2320         return view->scale;
2321 }
2322
2323 gboolean
2324 ev_view_get_continuous (EvView *view)
2325 {
2326         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2327
2328         return view->continuous;
2329 }
2330
2331 void
2332 ev_view_set_continuous (EvView   *view,
2333                         gboolean  continuous)
2334 {
2335         g_return_if_fail (EV_IS_VIEW (view));
2336
2337         continuous = continuous != FALSE;
2338
2339         if (view->continuous != continuous) {
2340                 view->continuous = continuous;
2341                 view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2342                 gtk_widget_queue_resize (GTK_WIDGET (view));
2343         }
2344
2345         g_object_notify (G_OBJECT (view), "continuous");
2346 }
2347
2348 gboolean
2349 ev_view_get_dual_page (EvView *view)
2350 {
2351         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2352
2353         return view->dual_page;
2354 }
2355
2356 void
2357 ev_view_set_dual_page (EvView   *view,
2358                        gboolean  dual_page)
2359 {
2360         g_return_if_fail (EV_IS_VIEW (view));
2361
2362         dual_page = dual_page != FALSE;
2363
2364         if (view->dual_page == dual_page)
2365                 return;
2366
2367         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2368         view->dual_page = dual_page;
2369         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
2370          * preload_cache_size to be 2 if dual_page is set.
2371          */
2372         gtk_widget_queue_resize (GTK_WIDGET (view));
2373
2374         g_object_notify (G_OBJECT (view), "dual-page");
2375 }
2376
2377 void
2378 ev_view_set_fullscreen (EvView   *view,
2379                          gboolean  fullscreen)
2380 {
2381         g_return_if_fail (EV_IS_VIEW (view));
2382
2383         fullscreen = fullscreen != FALSE;
2384
2385         if (view->fullscreen == fullscreen)
2386                 return;
2387
2388         view->fullscreen = fullscreen;
2389         gtk_widget_queue_resize (GTK_WIDGET (view));
2390
2391         g_object_notify (G_OBJECT (view), "fullscreen");
2392 }
2393
2394 gboolean
2395 ev_view_get_fullscreen (EvView *view)
2396 {
2397         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2398
2399         return view->fullscreen;
2400 }
2401
2402 void
2403 ev_view_set_presentation (EvView   *view,
2404                           gboolean  presentation)
2405 {
2406         g_return_if_fail (EV_IS_VIEW (view));
2407
2408         presentation = presentation != FALSE;
2409
2410         if (view->presentation == presentation)
2411                 return;
2412
2413         view->presentation = presentation;
2414         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2415         gtk_widget_queue_resize (GTK_WIDGET (view));
2416
2417         if (GTK_WIDGET_REALIZED (view)) {
2418                 if (view->presentation)
2419                         gdk_window_set_background (GTK_WIDGET(view)->window,
2420                                                    &GTK_WIDGET (view)->style->black);
2421                 else
2422                         gdk_window_set_background (GTK_WIDGET(view)->window,
2423                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
2424         }
2425
2426
2427         g_object_notify (G_OBJECT (view), "presentation");
2428 }
2429
2430 gboolean
2431 ev_view_get_presentation (EvView *view)
2432 {
2433         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2434
2435         return view->presentation;
2436 }
2437
2438 void
2439 ev_view_set_sizing_mode (EvView       *view,
2440                          EvSizingMode  sizing_mode)
2441 {
2442         g_return_if_fail (EV_IS_VIEW (view));
2443
2444         if (view->sizing_mode == sizing_mode)
2445                 return;
2446
2447         view->sizing_mode = sizing_mode;
2448         gtk_widget_queue_resize (GTK_WIDGET (view));
2449
2450         g_object_notify (G_OBJECT (view), "sizing-mode");
2451 }
2452
2453 EvSizingMode
2454 ev_view_get_sizing_mode (EvView *view)
2455 {
2456         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
2457
2458         return view->sizing_mode;
2459 }
2460
2461 gboolean
2462 ev_view_can_zoom_in (EvView *view)
2463 {
2464         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
2465 }
2466
2467 gboolean
2468 ev_view_can_zoom_out (EvView *view)
2469 {
2470         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
2471 }
2472
2473 void
2474 ev_view_zoom_in (EvView *view)
2475 {
2476         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2477
2478         view->pending_scroll = SCROLL_TO_CENTER;
2479         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
2480 }
2481
2482 void
2483 ev_view_zoom_out (EvView *view)
2484 {
2485         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2486
2487         view->pending_scroll = SCROLL_TO_CENTER;
2488         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
2489 }
2490
2491 void
2492 ev_view_rotate_right (EvView *view)
2493 {
2494         int rotation = view->rotation + 90;
2495
2496         if (rotation >= 360) {
2497                 rotation -= 360;
2498         }
2499
2500         ev_view_set_rotation (view, rotation);
2501 }
2502
2503 void
2504 ev_view_rotate_left (EvView *view)
2505 {
2506         int rotation = view->rotation - 90;
2507
2508         if (rotation < 0) {
2509                 rotation += 360;
2510         }
2511
2512         ev_view_set_rotation (view, rotation);
2513 }
2514
2515 void
2516 ev_view_set_rotation (EvView *view, int rotation)
2517 {
2518         view->rotation = rotation;
2519
2520         if (view->pixbuf_cache) {
2521                 ev_pixbuf_cache_clear (view->pixbuf_cache);
2522                 gtk_widget_queue_resize (GTK_WIDGET (view));
2523         }
2524
2525         if (rotation != 0)
2526                 clear_selection (view);
2527
2528         g_object_notify (G_OBJECT (view), "rotation");
2529 }
2530
2531 int
2532 ev_view_get_rotation (EvView *view)
2533 {
2534         return view->rotation;
2535 }
2536
2537 static double
2538 zoom_for_size_fit_width (int doc_width,
2539                          int doc_height,
2540                          int target_width,
2541                          int target_height,
2542                          int vsb_width)
2543 {
2544         double scale;
2545
2546         scale = (double)target_width / doc_width;
2547
2548         if (doc_height * scale > target_height)
2549                 scale = (double) (target_width - vsb_width) / doc_width;
2550
2551         return scale;
2552 }
2553
2554 static double
2555 zoom_for_size_best_fit (int doc_width,
2556                         int doc_height,
2557                         int target_width,
2558                         int target_height,
2559                         int vsb_width,
2560                         int hsb_width)
2561 {
2562         double w_scale;
2563         double h_scale;
2564
2565         w_scale = (double)target_width / doc_width;
2566         h_scale = (double)target_height / doc_height;
2567
2568         if (doc_height * w_scale > target_height)
2569                 w_scale = (double) (target_width - vsb_width) / doc_width;
2570         if (doc_width * h_scale > target_width)
2571                 h_scale = (double) (target_height - hsb_width) / doc_height;
2572
2573         return MIN (w_scale, h_scale);
2574 }
2575
2576
2577 static void
2578 ev_view_zoom_for_size_presentation (EvView *view,
2579                                     int     width,
2580                                     int     height)
2581 {
2582         int doc_width, doc_height;
2583         gdouble scale;
2584
2585         ev_page_cache_get_size (view->page_cache,
2586                                 view->current_page,
2587                                 view->rotation,
2588                                 1.0,
2589                                 &doc_width,
2590                                 &doc_height);
2591         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
2592         ev_view_set_zoom (view, scale, FALSE);
2593 }
2594
2595 static void
2596 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
2597                            int     width,
2598                            int     height,
2599                            int     vsb_width,
2600                            int     hsb_height)
2601 {
2602         int doc_width, doc_height;
2603         GtkBorder border;
2604         gdouble scale;
2605
2606         ev_page_cache_get_max_width (view->page_cache,
2607                                      view->rotation,
2608                                      1.0,
2609                                      &doc_width);
2610         ev_page_cache_get_max_height (view->page_cache,
2611                                       view->rotation,
2612                                       1.0,
2613                                       &doc_height);
2614         compute_border (view, doc_width, doc_height, &border);
2615
2616         doc_width = doc_width * 2;
2617         width -= (2 * (border.left + border.right) + 3 * view->spacing);
2618         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2619
2620         /* FIXME: We really need to calculate the overall height here, not the
2621          * page height.  We assume there's always a vertical scrollbar for
2622          * now.  We need to fix this. */
2623         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2624                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2625         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2626                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2627         else
2628                 g_assert_not_reached ();
2629
2630         ev_view_set_zoom (view, scale, FALSE);
2631 }
2632
2633 static void
2634 ev_view_zoom_for_size_continuous (EvView *view,
2635                                   int     width,
2636                                   int     height,
2637                                   int     vsb_width,
2638                                   int     hsb_height)
2639 {
2640         int doc_width, doc_height;
2641         GtkBorder border;
2642         gdouble scale;
2643
2644         ev_page_cache_get_max_width (view->page_cache,
2645                                      view->rotation,
2646                                      1.0,
2647                                      &doc_width);
2648         ev_page_cache_get_max_height (view->page_cache,
2649                                       view->rotation,
2650                                       1.0,
2651                                       &doc_height);
2652         compute_border (view, doc_width, doc_height, &border);
2653
2654         width -= (border.left + border.right + 2 * view->spacing);
2655         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2656
2657         /* FIXME: We really need to calculate the overall height here, not the
2658          * page height.  We assume there's always a vertical scrollbar for
2659          * now.  We need to fix this. */
2660         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2661                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2662         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2663                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2664         else
2665                 g_assert_not_reached ();
2666
2667         ev_view_set_zoom (view, scale, FALSE);
2668 }
2669
2670 static void
2671 ev_view_zoom_for_size_dual_page (EvView *view,
2672                                  int     width,
2673                                  int     height,
2674                                  int     vsb_width,
2675                                  int     hsb_height)
2676 {
2677         GtkBorder border;
2678         gint doc_width, doc_height;
2679         gdouble scale;
2680         gint other_page;
2681
2682         other_page = view->current_page ^ 1;
2683
2684         /* Find the largest of the two. */
2685         ev_page_cache_get_size (view->page_cache,
2686                                 view->current_page,
2687                                 view->rotation,
2688                                 1.0,
2689                                 &doc_width, &doc_height);
2690
2691         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
2692                 gint width_2, height_2;
2693                 ev_page_cache_get_size (view->page_cache,
2694                                         other_page,
2695                                         view->rotation,
2696                                         1.0,
2697                                         &width_2, &height_2);
2698                 if (width_2 > doc_width)
2699                         doc_width = width_2;
2700                 if (height_2 > doc_height)
2701                         doc_height = height_2;
2702         }
2703         compute_border (view, doc_width, doc_height, &border);
2704
2705         doc_width = doc_width * 2;
2706         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
2707         height -= (border.top + border.bottom + 2 * view->spacing);
2708
2709         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2710                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
2711         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2712                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
2713         else
2714                 g_assert_not_reached ();
2715
2716         ev_view_set_zoom (view, scale, FALSE);
2717 }
2718
2719 static void
2720 ev_view_zoom_for_size_single_page (EvView *view,
2721                                    int     width,
2722                                    int     height,
2723                                    int     vsb_width,
2724                                    int     hsb_height)
2725 {
2726         int doc_width, doc_height;
2727         GtkBorder border;
2728         gdouble scale;
2729
2730         ev_page_cache_get_size (view->page_cache,
2731                                 view->current_page,
2732                                 view->rotation,
2733                                 1.0,
2734                                 &doc_width,
2735                                 &doc_height);
2736         /* Get an approximate border */
2737         compute_border (view, width, height, &border);
2738
2739         width -= (border.left + border.right + 2 * view->spacing);
2740         height -= (border.top + border.bottom + 2 * view->spacing);
2741
2742         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2743                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
2744         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2745                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
2746         else
2747                 g_assert_not_reached ();
2748
2749         ev_view_set_zoom (view, scale, FALSE);
2750 }
2751
2752 void
2753 ev_view_set_zoom_for_size (EvView *view,
2754                            int     width,
2755                            int     height,
2756                            int     vsb_width,
2757                            int     hsb_height)
2758 {
2759         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2760                           view->sizing_mode == EV_SIZING_BEST_FIT);
2761         g_return_if_fail (width >= 0);
2762         g_return_if_fail (height >= 0);
2763
2764         if (view->document == NULL)
2765                 return;
2766
2767         if (view->presentation)
2768                 ev_view_zoom_for_size_presentation (view, width, height);
2769         else if (view->continuous && view->dual_page)
2770                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
2771         else if (view->continuous)
2772                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
2773         else if (view->dual_page)
2774                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
2775         else
2776                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
2777 }
2778
2779 /*** Status text messages ***/
2780
2781 const char *
2782 ev_view_get_status (EvView *view)
2783 {
2784         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
2785
2786         return view->status;
2787 }
2788
2789 static void
2790 ev_view_set_status (EvView *view, const char *message)
2791 {
2792         g_return_if_fail (EV_IS_VIEW (view));
2793
2794         if (message != view->status) {
2795                 g_free (view->status);
2796                 view->status = g_strdup (message);
2797                 g_object_notify (G_OBJECT (view), "status");
2798         }
2799 }
2800
2801 static void
2802 update_find_status_message (EvView *view)
2803 {
2804         char *message;
2805
2806         if (view->current_page == view->find_page) {
2807                 int results;
2808
2809                 results = ev_document_find_get_n_results
2810                                 (EV_DOCUMENT_FIND (view->document),
2811                                  view->current_page);
2812                 /* TRANS: Sometimes this could be better translated as
2813                    "%d hit(s) on this page".  Therefore this string
2814                    contains plural cases. */
2815                 message = g_strdup_printf (ngettext ("%d found on this page",
2816                                                      "%d found on this page",
2817                                                      results),
2818                                            results);
2819         } else {
2820                 double percent;
2821
2822                 percent = ev_document_find_get_progress
2823                                 (EV_DOCUMENT_FIND (view->document));
2824                 if (percent >= (1.0 - 1e-10)) {
2825                         message = g_strdup (_("Not found"));
2826                 } else {
2827                         message = g_strdup_printf (_("%3d%% remaining to search"),
2828                                                    (int) ((1.0 - percent) * 100));
2829                 }
2830
2831         }
2832         ev_view_set_find_status (view, message);
2833         g_free (message);
2834 }
2835
2836 const char *
2837 ev_view_get_find_status (EvView *view)
2838 {
2839         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
2840
2841         return view->find_status;
2842 }
2843
2844 static void
2845 ev_view_set_find_status (EvView *view, const char *message)
2846 {
2847         g_return_if_fail (EV_IS_VIEW (view));
2848
2849         g_free (view->find_status);
2850         view->find_status = g_strdup (message);
2851         g_object_notify (G_OBJECT (view), "find-status");
2852 }
2853
2854 /*** Find ***/
2855
2856 static void
2857 jump_to_find_result (EvView *view)
2858 {
2859         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2860         EvRectangle rect;
2861         GdkRectangle view_rect;
2862         int n_results;
2863         int page = view->find_page;
2864
2865         n_results = ev_document_find_get_n_results (find, page);
2866
2867         if (n_results > 0  && view->find_result < n_results) {
2868                 ev_document_find_get_result
2869                         (find, page, view->find_result, &rect);
2870
2871                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
2872                 ensure_rectangle_is_visible (view, &view_rect);
2873         }
2874 }
2875
2876 static void
2877 jump_to_find_page (EvView *view, EvViewFindDirection direction)
2878 {
2879         int n_pages, i;
2880
2881         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2882
2883         for (i = 0; i < n_pages; i++) {
2884                 int has_results;
2885                 int page;
2886
2887                 if (direction == EV_VIEW_FIND_NEXT)
2888                         page = view->find_page + i;
2889                 else
2890                         page = view->find_page - i;
2891
2892
2893                 if (page >= n_pages) {
2894                         page = page - n_pages;
2895                 }
2896                 if (page < 0)
2897                         page = page + n_pages;
2898
2899                 has_results = ev_document_find_page_has_results
2900                                 (EV_DOCUMENT_FIND (view->document), page);
2901                 if (has_results == -1) {
2902                         view->find_page = page;
2903                         break;
2904                 } else if (has_results == 1) {
2905                         ev_page_cache_set_current_page (view->page_cache, page);
2906                         break;
2907                 }
2908         }
2909 }
2910
2911 gboolean
2912 ev_view_can_find_next (EvView *view)
2913 {
2914         int n_results = 0;
2915
2916         if (EV_IS_DOCUMENT_FIND (view->document)) {
2917                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2918
2919                 n_results = ev_document_find_get_n_results (find, view->current_page);
2920         }
2921
2922         return n_results > 0;
2923 }
2924
2925 void
2926 ev_view_find_next (EvView *view)
2927 {
2928         int n_results, n_pages;
2929         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2930
2931         n_results = ev_document_find_get_n_results (find, view->current_page);
2932
2933         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2934
2935         view->find_result++;
2936
2937         if (view->find_result >= n_results) {
2938
2939                 view->find_result = 0;
2940                 view->find_page++;
2941                 if (view->find_page >= n_pages) {
2942                         view->find_page = 0;
2943                 }
2944
2945                 jump_to_find_page (view, EV_VIEW_FIND_NEXT);
2946                 jump_to_find_result (view);
2947         } else {
2948                 jump_to_find_result (view);
2949                 gtk_widget_queue_draw (GTK_WIDGET (view));
2950         }
2951 }
2952
2953 void
2954 ev_view_find_previous (EvView *view)
2955 {
2956         int n_results, n_pages;
2957         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2958         EvPageCache *page_cache;
2959
2960         page_cache = ev_page_cache_get (view->document);
2961
2962         n_results = ev_document_find_get_n_results (find, view->current_page);
2963
2964         n_pages = ev_page_cache_get_n_pages (page_cache);
2965
2966         view->find_result--;
2967
2968         if (view->find_result < 0) {
2969
2970                 view->find_page--;
2971                 if (view->find_page < 0) {
2972                         view->find_page = n_pages - 1;
2973                 }
2974
2975                 jump_to_find_page (view, EV_VIEW_FIND_PREV);
2976                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
2977                 jump_to_find_result (view);
2978         } else {
2979                 jump_to_find_result (view);
2980                 gtk_widget_queue_draw (GTK_WIDGET (view));
2981         }
2982 }
2983
2984 /*** Selections ***/
2985
2986 /* compute_new_selection_rect/text calculates the area currently selected by
2987  * view_rect.  each handles a different mode;
2988  */
2989 static GList *
2990 compute_new_selection_rect (EvView       *view,
2991                             GdkPoint     *start,
2992                             GdkPoint     *stop)
2993 {
2994         GdkRectangle view_rect;
2995         int n_pages, i;
2996         GList *list = NULL;
2997
2998         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
2999
3000         view_rect.x = MIN (start->x, stop->x);
3001         view_rect.y = MIN (start->y, stop->y);
3002         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
3003         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
3004
3005         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3006
3007         for (i = 0; i < n_pages; i++) {
3008                 GdkRectangle page_area;
3009                 GtkBorder border;
3010
3011                 if (get_page_extents (view, i, &page_area, &border)) {
3012                         GdkRectangle overlap;
3013
3014                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
3015                                 EvViewSelection *selection;
3016
3017                                 selection = g_new0 (EvViewSelection, 1);
3018                                 selection->page = i;
3019                                 view_rect_to_doc_rect (view, &overlap, &page_area,
3020                                                        &(selection->rect));
3021
3022                                 list = g_list_append (list, selection);
3023                         }
3024                 }
3025         }
3026
3027         return list;
3028 }
3029
3030 static gboolean
3031 gdk_rectangle_point_in (GdkRectangle *rectangle,
3032                         GdkPoint     *point)
3033 {
3034         return rectangle->x <= point->x &&
3035                 rectangle->y <= point->y &&
3036                 point->x < rectangle->x + rectangle->width &&
3037                 point->y < rectangle->y + rectangle->height;
3038 }
3039
3040 static GList *
3041 compute_new_selection_text (EvView   *view,
3042                             GdkPoint *start,
3043                             GdkPoint *stop)
3044 {
3045         int n_pages, i, first, last;
3046         GList *list = NULL;
3047         EvViewSelection *selection;
3048         gint width, height;
3049         int start_page, end_page;
3050
3051         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
3052
3053         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3054
3055         /* First figure out the range of pages the selection
3056          * affects. */
3057         first = n_pages;
3058         last = 0;
3059         if (view->continuous) {
3060                 start_page = 0;
3061                 end_page = n_pages;
3062         } else if (view->dual_page) {
3063                 start_page = view->start_page;
3064                 end_page = view->end_page + 1;
3065         } else {
3066                 start_page = view->current_page;
3067                 end_page = view->current_page + 1;
3068         }
3069
3070         for (i = start_page; i < end_page; i++) {
3071                 GdkRectangle page_area;
3072                 GtkBorder border;
3073
3074                 get_page_extents (view, i, &page_area, &border);
3075                 if (gdk_rectangle_point_in (&page_area, start) ||
3076                     gdk_rectangle_point_in (&page_area, stop)) {
3077                         if (first == n_pages)
3078                                 first = i;
3079                         last = i;
3080                 }
3081
3082         }
3083
3084
3085
3086         /* Now create a list of EvViewSelection's for the affected
3087          * pages.  This could be an empty list, a list of just one
3088          * page or a number of pages.*/
3089         for (i = first; i < last + 1; i++) {
3090                 GdkRectangle page_area;
3091                 GtkBorder border;
3092                 GdkPoint *point;
3093
3094                 ev_page_cache_get_size (view->page_cache, i,
3095                                         view->rotation,
3096                                         1.0, &width, &height);
3097
3098                 selection = g_new0 (EvViewSelection, 1);
3099                 selection->page = i;
3100                 selection->rect.x1 = selection->rect.y1 = 0;
3101                 selection->rect.x2 = width;
3102                 selection->rect.y2 = height;
3103
3104                 get_page_extents (view, i, &page_area, &border);
3105
3106                 if (gdk_rectangle_point_in (&page_area, start))
3107                         point = start;
3108                 else
3109                         point = stop;
3110
3111                 if (i == first)
3112                         view_point_to_doc_point (view, point, &page_area,
3113                                                  &selection->rect.x1,
3114                                                  &selection->rect.y1);
3115
3116                 /* If the selection is contained within just one page,
3117                  * make sure we don't write 'start' into both points
3118                  * in selection->rect. */
3119                 if (first == last)
3120                         point = stop;
3121
3122                 if (i == last)
3123                         view_point_to_doc_point (view, point, &page_area,
3124                                                  &selection->rect.x2,
3125                                                  &selection->rect.y2);
3126
3127                 list = g_list_append (list, selection);
3128         }
3129
3130         return list;
3131 }
3132
3133 /* This function takes the newly calculated list, and figures out which regions
3134  * have changed.  It then queues a redraw approporiately.
3135  */
3136 static void
3137 merge_selection_region (EvView *view,
3138                         GList  *new_list)
3139 {
3140         GList *old_list;
3141         GList *new_list_ptr, *old_list_ptr;
3142
3143         /* Update the selection */
3144         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
3145         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3146         view->selection_info.selections = new_list;
3147         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
3148
3149         new_list_ptr = new_list;
3150         old_list_ptr = old_list;
3151
3152         while (new_list_ptr || old_list_ptr) {
3153                 EvViewSelection *old_sel, *new_sel;
3154                 int cur_page;
3155                 GdkRegion *region = NULL;
3156
3157                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
3158                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
3159
3160                 /* Assume that the lists are in order, and we run through them
3161                  * comparing them, one page at a time.  We come out with the
3162                  * first page we see. */
3163                 if (new_sel && old_sel) {
3164                         if (new_sel->page < old_sel->page) {
3165                                 new_list_ptr = new_list_ptr->next;
3166                                 old_sel = NULL;
3167                         } else if (new_sel->page > old_sel->page) {
3168                                 old_list_ptr = old_list_ptr->next;
3169                                 new_sel = NULL;
3170                         } else {
3171                                 new_list_ptr = new_list_ptr->next;
3172                                 old_list_ptr = old_list_ptr->next;
3173                         }
3174                 } else if (new_sel) {
3175                         new_list_ptr = new_list_ptr->next;
3176                 } else if (old_sel) {
3177                         old_list_ptr = old_list_ptr->next;
3178                 }
3179
3180                 g_assert (new_sel || old_sel);
3181
3182                 /* is the page we're looking at on the screen?*/
3183                 cur_page = new_sel ? new_sel->page : old_sel->page;
3184                 if (cur_page < view->start_page || cur_page > view->end_page)
3185                         continue;
3186
3187                 /* seed the cache with a new page.  We are going to need the new
3188                  * region too. */
3189                 if (new_sel) {
3190                         GdkRegion *tmp_region = NULL;
3191                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
3192                                                               cur_page,
3193                                                               view->scale,
3194                                                               &tmp_region);
3195                         if (tmp_region) {
3196                                 new_sel->covered_region = gdk_region_copy (tmp_region);
3197                         }
3198                 }
3199
3200                 /* Now we figure out what needs redrawing */
3201                 if (old_sel && new_sel) {
3202                         if (old_sel->covered_region &&
3203                             new_sel->covered_region) {
3204                                 /* We only want to redraw the areas that have
3205                                  * changed, so we xor the old and new regions
3206                                  * and redraw if it's different */
3207                                 region = gdk_region_copy (old_sel->covered_region);
3208                                 gdk_region_xor (region, new_sel->covered_region);
3209                                 if (gdk_region_empty (region)) {
3210                                         gdk_region_destroy (region);
3211                                         region = NULL;
3212                                 }
3213                         } else if (old_sel->covered_region) {
3214                                 region = gdk_region_copy (old_sel->covered_region);
3215                         } else if (new_sel->covered_region) {
3216                                 region = gdk_region_copy (new_sel->covered_region);
3217                         }
3218                 } else if (old_sel && !new_sel) {
3219                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
3220                                 region = gdk_region_copy (old_sel->covered_region);
3221                         }
3222                 } else if (!old_sel && new_sel) {
3223                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
3224                                 region = gdk_region_copy (new_sel->covered_region);
3225                         }
3226                 } else {
3227                         g_assert_not_reached ();
3228                 }
3229
3230                 /* Redraw the damaged region! */
3231                 if (region) {
3232                         GdkRectangle page_area;
3233                         GtkBorder border;
3234
3235                         get_page_extents (view, cur_page, &page_area, &border);
3236                         gdk_region_offset (region,
3237                                            page_area.x + border.left - view->scroll_x,
3238                                            page_area.y + border.top - view->scroll_y);
3239                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
3240                         gdk_region_destroy (region);
3241                 }
3242         }
3243
3244         /* Free the old list, now that we're done with it. */
3245         g_list_foreach (old_list, (GFunc) selection_free, NULL);
3246 }
3247
3248 static void
3249 compute_selections (EvView   *view,
3250                     GdkPoint *start,
3251                     GdkPoint *stop)
3252 {
3253         GList *list;
3254
3255         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
3256                 list = compute_new_selection_rect (view, start, stop);
3257         else
3258                 list = compute_new_selection_text (view, start, stop);
3259         merge_selection_region (view, list);
3260 }
3261
3262 /* Free's the selection.  It's up to the caller to queue redraws if needed.
3263  */
3264 static void
3265 selection_free (EvViewSelection *selection)
3266 {
3267         if (selection->covered_region)
3268                 gdk_region_destroy (selection->covered_region);
3269         g_free (selection);
3270 }
3271
3272 static void
3273 clear_selection (EvView *view)
3274 {
3275         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3276         view->selection_info.selections = NULL;
3277         view->selection_info.in_selection = FALSE;
3278 }
3279
3280
3281 void
3282 ev_view_select_all (EvView *view)
3283 {
3284         int n_pages, i;
3285
3286         /* Disable selection on rotated pages for the 0.4.0 series */
3287         if (view->rotation != 0)
3288                 return;
3289
3290         clear_selection (view);
3291
3292         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3293         for (i = 0; i < n_pages; i++) {
3294                 int width, height;
3295                 EvViewSelection *selection;
3296
3297                 ev_page_cache_get_size (view->page_cache,
3298                                         i,
3299                                         view->rotation,
3300                                         1.0, &width, &height);
3301
3302                 selection = g_new0 (EvViewSelection, 1);
3303                 selection->page = i;
3304                 selection->rect.x1 = selection->rect.y1 = 0;
3305                 selection->rect.x2 = width;
3306                 selection->rect.y2 = height;
3307
3308                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
3309         }
3310
3311         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
3312         gtk_widget_queue_draw (GTK_WIDGET (view));
3313 }
3314
3315 static char *
3316 get_selected_text (EvView *ev_view)
3317 {
3318         GString *text;
3319         GList *l;
3320
3321         text = g_string_new (NULL);
3322
3323         ev_document_doc_mutex_lock ();
3324
3325         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
3326                 EvViewSelection *selection = (EvViewSelection *)l->data;
3327                 char *tmp;
3328
3329                 tmp = ev_document_get_text (ev_view->document,
3330                                             selection->page,
3331                                             &selection->rect);
3332                 g_string_append (text, tmp);
3333                 g_free (tmp);
3334         }
3335
3336         ev_document_doc_mutex_unlock ();
3337
3338         return g_string_free (text, FALSE);
3339 }
3340
3341 void
3342 ev_view_copy (EvView *ev_view)
3343 {
3344         GtkClipboard *clipboard;
3345         char *text;
3346
3347         if (!ev_document_can_get_text (ev_view->document)) {
3348                 return;
3349         }
3350
3351         text = get_selected_text (ev_view);
3352         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3353                                               GDK_SELECTION_CLIPBOARD);
3354         gtk_clipboard_set_text (clipboard, text, -1);
3355         g_free (text);
3356 }
3357
3358 static void
3359 ev_view_primary_get_cb (GtkClipboard     *clipboard,
3360                         GtkSelectionData *selection_data,
3361                         guint             info,
3362                         gpointer          data)
3363 {
3364         EvView *ev_view = EV_VIEW (data);
3365         char *text;
3366
3367         if (!ev_document_can_get_text (ev_view->document)) {
3368                 return;
3369         }
3370
3371         text = get_selected_text (ev_view);
3372         gtk_selection_data_set_text (selection_data, text, -1);
3373         g_free (text);
3374 }
3375
3376 static void
3377 ev_view_primary_clear_cb (GtkClipboard *clipboard,
3378                           gpointer      data)
3379 {
3380         EvView *view = EV_VIEW (data);
3381
3382         clear_selection (view);
3383 }
3384
3385 static void
3386 ev_view_update_primary_selection (EvView *ev_view)
3387 {
3388         GtkClipboard *clipboard;
3389
3390         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3391                                               GDK_SELECTION_PRIMARY);
3392
3393         if (ev_view->selection_info.selections) {
3394                 if (!gtk_clipboard_set_with_owner (clipboard,
3395                                                    targets,
3396                                                    G_N_ELEMENTS (targets),
3397                                                    ev_view_primary_get_cb,
3398                                                    ev_view_primary_clear_cb,
3399                                                    G_OBJECT (ev_view)))
3400                         ev_view_primary_clear_cb (clipboard, ev_view);
3401         } else {
3402                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
3403                         gtk_clipboard_clear (clipboard);
3404         }
3405 }
3406
3407 /*** Cursor operations ***/
3408
3409 static GdkCursor *
3410 ev_view_create_invisible_cursor(void)
3411 {
3412        GdkBitmap *empty;
3413        GdkColor black = { 0, 0, 0, 0 };
3414        static char bits[] = { 0x00 };
3415
3416        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
3417
3418        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
3419 }
3420
3421 static void
3422 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
3423 {
3424         GdkCursor *cursor = NULL;
3425         GdkDisplay *display;
3426         GtkWidget *widget;
3427
3428         if (view->cursor == new_cursor) {
3429                 return;
3430         }
3431
3432         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
3433         display = gtk_widget_get_display (widget);
3434         view->cursor = new_cursor;
3435
3436         switch (new_cursor) {
3437                 case EV_VIEW_CURSOR_NORMAL:
3438                         gdk_window_set_cursor (widget->window, NULL);
3439                         break;
3440                 case EV_VIEW_CURSOR_IBEAM:
3441                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
3442                         break;
3443                 case EV_VIEW_CURSOR_LINK:
3444                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
3445                         break;
3446                 case EV_VIEW_CURSOR_WAIT:
3447                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
3448                         break;
3449                 case EV_VIEW_CURSOR_HIDDEN:
3450                         cursor = ev_view_create_invisible_cursor ();
3451                         break;
3452                 case EV_VIEW_CURSOR_DRAG:
3453                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
3454                         break;
3455         }
3456
3457         if (cursor) {
3458                 gdk_window_set_cursor (widget->window, cursor);
3459                 gdk_cursor_unref (cursor);
3460                 gdk_flush();
3461         }
3462 }
3463
3464 void
3465 ev_view_hide_cursor (EvView *view)
3466 {
3467        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
3468 }
3469
3470 void
3471 ev_view_show_cursor (EvView *view)
3472 {
3473        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3474 }
3475
3476 /*** Enum description for usage in signal ***/
3477
3478 GType
3479 ev_sizing_mode_get_type (void)
3480 {
3481   static GType etype = 0;
3482   if (etype == 0) {
3483     static const GEnumValue values[] = {
3484       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
3485       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
3486       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
3487       { 0, NULL, NULL }
3488     };
3489     etype = g_enum_register_static ("EvSizingMode", values);
3490   }
3491   return etype;
3492 }
3493