shell/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <math.h>
  22 #include <gtk/gtkalignment.h>
  23 #include <glib/gi18n.h>
  24 #include <gtk/gtkbindings.h>
  25 #include <gtk/gtkselection.h>
  26 #include <gtk/gtkclipboard.h>
  27 #include <gdk/gdkkeysyms.h>
  28 #include <libgnomevfs/gnome-vfs-utils.h>
  29
  30 #include "ev-marshal.h"
  31 #include "ev-view.h"
  32 #include "ev-utils.h"
  33 #include "ev-selection.h"
  34 #include "ev-document-find.h"
  35 #include "ev-document-misc.h"
  36 #include "ev-debug.h"
  37 #include "ev-job-queue.h"
  38 #include "ev-page-cache.h"
  39 #include "ev-pixbuf-cache.h"
  40 #include "ev-tooltip.h"
  41
  42 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  43 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  44 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  45
  46
  47 enum {
  48         PROP_0,
  49         PROP_STATUS,
  50         PROP_FIND_STATUS,
  51         PROP_CONTINUOUS,
  52         PROP_DUAL_PAGE,
  53         PROP_FULLSCREEN,
  54         PROP_PRESENTATION,
  55         PROP_SIZING_MODE,
  56         PROP_ZOOM,
  57         PROP_ROTATION,
  58 };
  59
  60 enum {
  61         SIGNAL_BINDING_ACTIVATED,
  62         SIGNAL_ZOOM_INVALID,
  63         N_SIGNALS,
  64 };
  65
  66 enum {
  67         TARGET_STRING,
  68         TARGET_TEXT,
  69         TARGET_COMPOUND_TEXT,
  70         TARGET_UTF8_STRING,
  71         TARGET_TEXT_BUFFER_CONTENTS
  72 };
  73
  74 static const GtkTargetEntry targets[] = {
  75         { "STRING", 0, TARGET_STRING },
  76         { "TEXT",   0, TARGET_TEXT },
  77         { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
  78         { "UTF8_STRING", 0, TARGET_UTF8_STRING },
  79 };
  80
  81 static guint signals[N_SIGNALS];
  82
  83 typedef enum {
  84         EV_VIEW_CURSOR_NORMAL,
  85         EV_VIEW_CURSOR_IBEAM,
  86         EV_VIEW_CURSOR_LINK,
  87         EV_VIEW_CURSOR_WAIT,
  88         EV_VIEW_CURSOR_HIDDEN,
  89         EV_VIEW_CURSOR_DRAG
  90 } EvViewCursor;
  91
  92 typedef enum {
  93         EV_VIEW_FIND_NEXT,
  94         EV_VIEW_FIND_PREV
  95 } EvViewFindDirection;
  96
  97 #define ZOOM_IN_FACTOR  1.2
  98 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  99
 100 #define MIN_SCALE 0.05409
 101 #define MAX_SCALE 4.0
 102
 103 /* Information for middle clicking and moving around the doc */
 104 typedef struct {
 105         gboolean in_drag;
 106         GdkPoint start;
 107         gdouble hadj;
 108         gdouble vadj;
 109 } DragInfo;
 110
 111 /* Information for handling selection */
 112 typedef struct {
 113         gboolean in_selection;
 114         GdkPoint start;
 115         GList *selections;
 116 } SelectionInfo;
 117
 118 typedef enum {
 119         SCROLL_TO_KEEP_POSITION,
 120         SCROLL_TO_CURRENT_PAGE,
 121         SCROLL_TO_CENTER
 122 } PendingScroll;
 123
 124 struct _EvView {
 125         GtkWidget parent_instance;
 126
 127         EvDocument *document;
 128
 129         char *status;
 130         char *find_status;
 131
 132         /* Scrolling */
 133         GtkAdjustment *hadjustment;
 134         GtkAdjustment *vadjustment;
 135
 136         gint scroll_x;
 137         gint scroll_y;
 138
 139         /* Information for middle clicking and dragging around. */
 140         DragInfo drag_info;
 141
 142         /* Selection */
 143         gint motion_x;
 144         gint motion_y;
 145         guint selection_update_id;
 146
 147         EvViewSelectionMode selection_mode;
 148         SelectionInfo selection_info;
 149
 150         int pressed_button;
 151         EvViewCursor cursor;
 152         GtkWidget *link_tooltip;
 153         EvLink *hovered_link;
 154
 155         EvPageCache *page_cache;
 156         EvPixbufCache *pixbuf_cache;
 157
 158         gint start_page;
 159         gint end_page;
 160         gint current_page;
 161
 162         EvJobRender *current_job;
 163
 164         int find_page;
 165         int find_result;
 166         int spacing;
 167
 168         int rotation;
 169         double scale;
 170
 171         gboolean continuous;
 172         gboolean dual_page;
 173         gboolean fullscreen;
 174         gboolean presentation;
 175         EvSizingMode sizing_mode;
 176
 177         PendingScroll pending_scroll;
 178         gboolean pending_resize;
 179 };
 180
 181 struct _EvViewClass {
 182         GtkWidgetClass parent_class;
 183
 184         void    (*set_scroll_adjustments) (EvView         *view,
 185                                            GtkAdjustment  *hadjustment,
 186                                            GtkAdjustment  *vadjustment);
 187         void    (*binding_activated)      (EvView         *view,
 188                                            GtkScrollType   scroll,
 189                                            gboolean        horizontal);
 190         void    (*zoom_invalid)           (EvView         *view);
 191 };
 192
 193 /*** Scrolling ***/
 194 static void       scroll_to_current_page                     (EvView *view,
 195                                                               GtkOrientation orientation);
 196 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 197                                                               GtkAdjustment      *hadjustment,
 198                                                               GtkAdjustment      *vadjustment);
 199 static void       view_update_range_and_current_page         (EvView             *view);
 200 static void       set_scroll_adjustment                      (EvView             *view,
 201                                                               GtkOrientation      orientation,
 202                                                               GtkAdjustment      *adjustment);
 203 static void       ev_view_set_scroll_adjustments             (EvView             *view,
 204                                                               GtkAdjustment      *hadjustment,
 205                                                               GtkAdjustment      *vadjustment);
 206 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
 207                                                               guint               keyval,
 208                                                               GtkScrollType       scroll,
 209                                                               gboolean            horizontal);
 210 static void       ev_view_binding_activated                  (EvView             *view,
 211                                                               GtkScrollType       scroll,
 212                                                               gboolean            horizontal);
 213 static void       ensure_rectangle_is_visible                (EvView             *view,
 214                                                               GdkRectangle       *rect);
 215
 216 /*** Geometry computations ***/
 217 static void       compute_border                             (EvView             *view,
 218                                                               int                 width,
 219                                                               int                 height,
 220                                                               GtkBorder          *border);
 221 static void       get_page_y_offset                          (EvView *view,
 222                                                               int page,
 223                                                               double zoom,
 224                                                               int *y_offset);
 225 static gboolean   get_page_extents                           (EvView             *view,
 226                                                               gint                page,
 227                                                               GdkRectangle       *page_area,
 228                                                               GtkBorder          *border);
 229 static void       view_rect_to_doc_rect                      (EvView             *view,
 230                                                               GdkRectangle       *view_rect,
 231                                                               GdkRectangle       *page_area,
 232                                                               EvRectangle        *doc_rect);
 233 static void       doc_rect_to_view_rect                      (EvView             *view,
 234                                                               int                 page,
 235                                                               EvRectangle        *doc_rect,
 236                                                               GdkRectangle       *view_rect);
 237 static void       find_page_at_location                      (EvView             *view,
 238                                                               gdouble             x,
 239                                                               gdouble             y,
 240                                                               gint               *page,
 241                                                               gint               *x_offset,
 242                                                               gint               *y_offset);
 243
 244 /*** Hyperrefs ***/
 245 static EvLink*    get_link_at_location                       (EvView             *view,
 246                                                               gdouble             x,
 247                                                               gdouble             y);
 248 static void       go_to_link                                 (EvView             *view,
 249                                                               EvLink             *link);
 250 static char*      tip_from_link                              (EvView             *view,
 251                                                               EvLink             *link);
 252
 253 /*** GtkWidget implementation ***/
 254 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 255                                                               GtkRequisition     *requisition);
 256 static void       ev_view_size_request_continuous            (EvView             *view,
 257                                                               GtkRequisition     *requisition);
 258 static void       ev_view_size_request_dual_page             (EvView             *view,
 259                                                               GtkRequisition     *requisition);
 260 static void       ev_view_size_request_single_page           (EvView             *view,
 261                                                               GtkRequisition     *requisition);
 262 static void       ev_view_size_request                       (GtkWidget          *widget,
 263                                                               GtkRequisition     *requisition);
 264 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 265                                                               GtkAllocation      *allocation);
 266 static void       ev_view_realize                            (GtkWidget          *widget);
 267 static void       ev_view_unrealize                          (GtkWidget          *widget);
 268 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 269                                                               GdkEventScroll     *event);
 270 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 271                                                               GdkEventExpose     *event);
 272 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 273                                                               GdkEventButton     *event);
 274 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 275                                                               GdkEventMotion     *event);
 276 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 277                                                               GdkEventButton     *event);
 278 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 279                                                               GdkEventCrossing   *event);
 280 static void       ev_view_style_set                          (GtkWidget          *widget,
 281                                                               GtkStyle           *old_style);
 282
 283 /*** Drawing ***/
 284 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 285 static void       draw_rubberband                            (GtkWidget          *widget,
 286                                                               GdkWindow          *window,
 287                                                               const GdkRectangle *rect,
 288                                                               guchar              alpha);
 289 static void       highlight_find_results                     (EvView             *view,
 290                                                               int                 page);
 291 static void       draw_one_page                              (EvView             *view,
 292                                                               gint                page,
 293                                                               GdkRectangle       *page_area,
 294                                                               GtkBorder          *border,
 295                                                               GdkRectangle       *expose_area);
 296
 297 /*** Callbacks ***/
 298 static void       find_changed_cb                            (EvDocument         *document,
 299                                                               int                 page,
 300                                                               EvView             *view);
 301 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 302                                                               EvView             *view);
 303 static void       page_changed_cb                            (EvPageCache        *page_cache,
 304                                                               int                 new_page,
 305                                                               EvView             *view);
 306 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 307                                                               EvView             *view);
 308
 309 /*** GObject ***/
 310 static void       ev_view_finalize                           (GObject            *object);
 311 static void       ev_view_destroy                            (GtkObject          *object);
 312 static void       ev_view_set_property                       (GObject            *object,
 313                                                               guint               prop_id,
 314                                                               const GValue       *value,
 315                                                               GParamSpec         *pspec);
 316 static void       ev_view_get_property                       (GObject            *object,
 317                                                               guint               prop_id,
 318                                                               GValue             *value,
 319                                                               GParamSpec         *pspec);
 320 static void       ev_view_class_init                         (EvViewClass        *class);
 321 static void       ev_view_init                               (EvView             *view);
 322
 323 /*** Zoom and sizing ***/
 324 static double   zoom_for_size_fit_width                      (int doc_width,
 325                                                               int doc_height,
 326                                                               int target_width,
 327                                                               int target_height,
 328                                                               int vsb_width);
 329 static double   zoom_for_size_best_fit                       (int doc_width,
 330                                                               int doc_height,
 331                                                               int target_width,
 332                                                               int target_height,
 333                                                               int vsb_width,
 334                                                               int hsb_width);
 335 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 336                                                               int     width,
 337                                                               int     height);
 338 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 339                                                                 int     width,
 340                                                                 int     height,
 341                                                                 int     vsb_width,
 342                                                                 int     hsb_height);
 343 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 344                                                                 int     width,
 345                                                                 int     height,
 346                                                                 int     vsb_width,
 347                                                                 int     hsb_height);
 348 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 349                                                                 int     width,
 350                                                                 int     height,
 351                                                                 int     vsb_width,
 352                                                                 int     hsb_height);
 353 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 354                                                                 int     width,
 355                                                                 int     height,
 356                                                                 int     vsb_width,
 357                                                                 int     hsb_height);
 358 /*** Cursors ***/
 359 static GdkCursor* ev_view_create_invisible_cursor            (void);
 360 static void       ev_view_set_cursor                         (EvView             *view,
 361                                                               EvViewCursor        new_cursor);
 362
 363 /*** Status messages ***/
 364 static void       ev_view_set_status                         (EvView             *view,
 365                                                               const char         *message);
 366 static void       update_find_status_message                 (EvView             *view);
 367 static void       ev_view_set_find_status                    (EvView             *view,
 368                                                               const char         *message);
 369 /*** Find ***/
 370 static void       jump_to_find_result                        (EvView             *view);
 371 static void       jump_to_find_page                          (EvView             *view,
 372                                                               EvViewFindDirection direction);
 373
 374 /*** Selection ***/
 375 static void       compute_selections                         (EvView             *view,
 376                                                               GdkPoint           *start,
 377                                                               GdkPoint           *stop);
 378 static void       clear_selection                            (EvView             *view);
 379 static void       selection_free                             (EvViewSelection    *selection);
 380 static char*      get_selected_text                          (EvView             *ev_view);
 381 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 382                                                               GtkSelectionData   *selection_data,
 383                                                               guint               info,
 384                                                               gpointer            data);
 385 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 386                                                               gpointer            data);
 387 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 388
 389
 390 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 391
 392 static void
 393 scroll_to_current_page (EvView *view, GtkOrientation orientation)
 394 {
 395         GdkRectangle page_area;
 396         GtkBorder border;
 397
 398         if (view->document == NULL) {
 399                 return;
 400         }
 401
 402         get_page_extents (view, view->current_page, &page_area, &border);
 403
 404         if (orientation == GTK_ORIENTATION_VERTICAL) {
 405                 if (view->continuous) {
 406                         gtk_adjustment_clamp_page (view->vadjustment,
 407                                                    page_area.y - view->spacing,
 408                                                    page_area.y + view->vadjustment->page_size);
 409                 } else {
 410                         gtk_adjustment_set_value (view->vadjustment,
 411                                                   view->vadjustment->lower);
 412                 }
 413         } else {
 414                 if (view->dual_page) {
 415                         gtk_adjustment_clamp_page (view->hadjustment,
 416                                                    page_area.x,
 417                                                    page_area.x + view->hadjustment->page_size);
 418                 } else {
 419                         gtk_adjustment_set_value (view->hadjustment,
 420                                                   CLAMP (view->hadjustment->value,
 421                                                   view->hadjustment->lower,
 422                                                   view->hadjustment->upper -
 423                                                   view->hadjustment->page_size));
 424                 }
 425         }
 426 }
 427
 428 static void
 429 view_set_adjustment_values (EvView         *view,
 430                             GtkOrientation  orientation)
 431 {
 432         GtkWidget *widget = GTK_WIDGET (view);
 433         GtkAdjustment *adjustment;
 434         int requisition;
 435         int allocation;
 436
 437         double factor;
 438         gint new_value;
 439
 440         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 441                 requisition = widget->requisition.width;
 442                 allocation = widget->allocation.width;
 443                 adjustment = view->hadjustment;
 444         } else {
 445                 requisition = widget->requisition.height;
 446                 allocation = widget->allocation.height;
 447                 adjustment = view->vadjustment;
 448         }
 449
 450         if (!adjustment)
 451                 return;
 452
 453         factor = 1.0;
 454         switch (view->pending_scroll) {
 455                 case SCROLL_TO_KEEP_POSITION:
 456                         factor = (adjustment->value) / adjustment->upper;
 457                         break;
 458                 case SCROLL_TO_CURRENT_PAGE:
 459                         break;
 460                 case SCROLL_TO_CENTER:
 461                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 462                         break;
 463         }
 464
 465         adjustment->page_size = allocation;
 466         adjustment->step_increment = allocation * 0.1;
 467         adjustment->page_increment = allocation * 0.9;
 468         adjustment->lower = 0;
 469         adjustment->upper = MAX (allocation, requisition);
 470
 471         /*
 472          * We add 0.5 to the values before to average out our rounding errors.
 473          */
 474         switch (view->pending_scroll) {
 475                 case SCROLL_TO_KEEP_POSITION:
 476                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 477                         gtk_adjustment_set_value (adjustment, (int)new_value);
 478                         break;
 479                 case SCROLL_TO_CURRENT_PAGE:
 480                         scroll_to_current_page (view, orientation);
 481                         break;
 482                 case SCROLL_TO_CENTER:
 483                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 484                                            0, adjustment->upper - adjustment->page_size);
 485                         gtk_adjustment_set_value (adjustment, (int)new_value);
 486                         break;
 487         }
 488
 489         gtk_adjustment_changed (adjustment);
 490 }
 491
 492 static void
 493 view_update_range_and_current_page (EvView *view)
 494 {
 495         if (view->pending_scroll != SCROLL_TO_KEEP_POSITION)
 496                 return;
 497
 498         /* Presentation trumps all other modes */
 499         if (view->presentation) {
 500                 view->start_page = view->current_page;
 501                 view->end_page = view->current_page;
 502         } else if (view->continuous) {
 503                 GdkRectangle current_area, unused, page_area;
 504                 GtkBorder border;
 505                 gint current_page;
 506                 gboolean found = FALSE;
 507                 int i;
 508
 509                 if (!(view->vadjustment && view->hadjustment))
 510                         return;
 511
 512                 current_area.x = view->hadjustment->value;
 513                 current_area.width = view->hadjustment->upper;
 514                 current_area.y = view->vadjustment->value;
 515                 current_area.height = view->vadjustment->page_size;
 516
 517                 for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) {
 518
 519                         get_page_extents (view, i, &page_area, &border);
 520
 521                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 522                                 if (! found) {
 523                                         view->start_page = i;
 524                                         found = TRUE;
 525
 526                                 }
 527                                 view->end_page = i;
 528                         } else if (found) {
 529                                 break;
 530                         }
 531                 }
 532
 533                 current_page = ev_page_cache_get_current_page (view->page_cache);
 534
 535                 if (current_page < view->start_page || current_page > view->end_page) {
 536                         view->current_page = view->start_page;
 537                         ev_page_cache_set_current_page (view->page_cache, view->start_page);
 538                 }
 539         } else {
 540                 if (view->dual_page) {
 541                         if (view->current_page % 2 == 0) {
 542                                 view->start_page = view->current_page;
 543                                 if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache))
 544                                         view->end_page = view->start_page + 1;
 545                         } else {
 546                                 view->start_page = view->current_page - 1;
 547                                 view->end_page = view->current_page;
 548                         }
 549                 } else {
 550                         view->start_page = view->current_page;
 551                         view->end_page = view->current_page;
 552                 }
 553         }
 554
 555         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 556                                         view->start_page,
 557                                         view->end_page,
 558                                         view->rotation,
 559                                         view->scale,
 560                                         view->selection_info.selections);
 561 }
 562
 563 static void
 564 set_scroll_adjustment (EvView *view,
 565                        GtkOrientation  orientation,
 566                        GtkAdjustment  *adjustment)
 567 {
 568         GtkAdjustment **to_set;
 569
 570         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 571                 to_set = &view->hadjustment;
 572         else
 573                 to_set = &view->vadjustment;
 574
 575         if (*to_set != adjustment) {
 576                 if (*to_set) {
 577                         g_signal_handlers_disconnect_by_func (*to_set,
 578                                                               (gpointer) on_adjustment_value_changed,
 579                                                               view);
 580                         g_object_unref (*to_set);
 581                 }
 582
 583                 *to_set = adjustment;
 584                 view_set_adjustment_values (view, orientation);
 585
 586                 if (*to_set) {
 587                         g_object_ref (*to_set);
 588                         g_signal_connect (*to_set, "value_changed",
 589                                           G_CALLBACK (on_adjustment_value_changed), view);
 590                 }
 591         }
 592 }
 593
 594 static void
 595 ev_view_set_scroll_adjustments (EvView *view,
 596                                 GtkAdjustment  *hadjustment,
 597                                 GtkAdjustment  *vadjustment)
 598 {
 599         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 600         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 601
 602         on_adjustment_value_changed (NULL, view);
 603 }
 604
 605 static void
 606 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 607                            guint           keyval,
 608                            GtkScrollType   scroll,
 609                            gboolean        horizontal)
 610 {
 611   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 612
 613   gtk_binding_entry_add_signal (binding_set, keyval, 0,
 614                                 "binding_activated", 2,
 615                                 GTK_TYPE_SCROLL_TYPE, scroll,
 616                                 G_TYPE_BOOLEAN, horizontal);
 617   gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
 618                                 "binding_activated", 2,
 619                                 GTK_TYPE_SCROLL_TYPE, scroll,
 620                                 G_TYPE_BOOLEAN, horizontal);
 621 }
 622
 623 void
 624 ev_view_scroll (EvView        *view,
 625                 EvScrollType   scroll)
 626 {
 627         GtkAdjustment *adjustment;
 628         double value, increment;
 629         gboolean first_page = FALSE;
 630         gboolean last_page = FALSE;
 631
 632         /* Assign values for increment and vertical adjustment */
 633         adjustment = view->vadjustment;
 634         increment = adjustment->page_size * 0.75;
 635         value = adjustment->value;
 636
 637         /* Assign boolean for first and last page */
 638         if (view->current_page == 0)
 639                 first_page = TRUE;
 640         if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
 641                 last_page = TRUE;
 642
 643         switch (scroll) {
 644                 case EV_SCROLL_PAGE_BACKWARD:
 645                         /* Do not jump backwards if at the first page */
 646                         if (value == (adjustment->lower) && first_page) {
 647                                 /* Do nothing */
 648                                 /* At the top of a page, assign the upper bound limit of previous page */
 649                         } else if (value == (adjustment->lower)) {
 650                                 value = adjustment->upper - adjustment->page_size;
 651                                 ev_page_cache_set_current_page (view->page_cache, view->current_page - 1);
 652                                 /* Jump to the top */
 653                         } else {
 654                                 value = MAX (value - increment, adjustment->lower);
 655                         }
 656                         break;
 657                 case EV_SCROLL_PAGE_FORWARD:
 658                         /* Do not jump forward if at the last page */
 659                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 660                                 /* Do nothing */
 661                         /* At the bottom of a page, assign the lower bound limit of next page */
 662                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 663                                 value = 0;
 664                                 ev_page_cache_set_current_page (view->page_cache, view->current_page + 1);
 665                         /* Jump to the bottom */
 666                         } else {
 667                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 668                         }
 669                         break;
 670                 default:
 671                         break;
 672         }
 673
 674         gtk_adjustment_set_value (adjustment, value);
 675 }
 676
 677 static void
 678 ev_view_binding_activated (EvView *view,
 679                            GtkScrollType scroll,
 680                            gboolean horizontal)
 681 {
 682         GtkAdjustment *adjustment;
 683         double value;
 684
 685         if (view->presentation) {
 686                 switch (scroll) {
 687                         case GTK_SCROLL_STEP_BACKWARD:
 688                                 ev_page_cache_prev_page (view->page_cache);
 689                                 break;
 690                         case GTK_SCROLL_STEP_FORWARD:
 691                                 ev_page_cache_next_page (view->page_cache);
 692                                 break;
 693                         default:
 694                                 break;
 695                 }
 696                 return;
 697         }
 698
 699         if (horizontal) {
 700                 adjustment = view->hadjustment;
 701         } else {
 702                 adjustment = view->vadjustment;
 703         }
 704
 705         value = adjustment->value;
 706
 707         switch (scroll) {
 708                 case GTK_SCROLL_STEP_BACKWARD:
 709                         value -= adjustment->step_increment;
 710                         break;
 711                 case GTK_SCROLL_STEP_FORWARD:
 712                         value += adjustment->step_increment;
 713                         break;
 714                 default:
 715                         break;
 716         }
 717
 718         value = CLAMP (value, adjustment->lower,
 719                        adjustment->upper - adjustment->page_size);
 720
 721         gtk_adjustment_set_value (adjustment, value);
 722 }
 723
 724 #define MARGIN 5
 725
 726 static void
 727 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 728 {
 729         GtkWidget *widget = GTK_WIDGET (view);
 730         GtkAdjustment *adjustment;
 731         int value;
 732
 733         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
 734
 735         adjustment = view->vadjustment;
 736
 737         if (rect->y < adjustment->value) {
 738                 value = MAX (adjustment->lower, rect->y - MARGIN);
 739                 gtk_adjustment_set_value (view->vadjustment, value);
 740         } else if (rect->y + rect->height >
 741                    adjustment->value + widget->allocation.height) {
 742                 value = MIN (adjustment->upper, rect->y + rect->height -
 743                              widget->allocation.height + MARGIN);
 744                 gtk_adjustment_set_value (view->vadjustment, value);
 745         }
 746
 747         adjustment = view->hadjustment;
 748
 749         if (rect->x < adjustment->value) {
 750                 value = MAX (adjustment->lower, rect->x - MARGIN);
 751                 gtk_adjustment_set_value (view->hadjustment, value);
 752         } else if (rect->x + rect->height >
 753                    adjustment->value + widget->allocation.width) {
 754                 value = MIN (adjustment->upper, rect->x + rect->width -
 755                              widget->allocation.width + MARGIN);
 756                 gtk_adjustment_set_value (view->hadjustment, value);
 757         }
 758 }
 759
 760 /*** Geometry computations ***/
 761
 762 static void
 763 compute_border (EvView *view, int width, int height, GtkBorder *border)
 764 {
 765         if (view->presentation) {
 766                 border->left = 0;
 767                 border->right = 0;
 768                 border->top = 0;
 769                 border->bottom = 0;
 770         } else {
 771                 ev_document_misc_get_page_border_size (width, height, border);
 772         }
 773 }
 774
 775 static void
 776 get_page_y_offset (EvView *view, int page, double zoom, int *y_offset)
 777 {
 778         int max_width, offset;
 779         GtkBorder border;
 780
 781         g_return_if_fail (y_offset != NULL);
 782
 783         ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width);
 784
 785         compute_border (view, max_width, max_width, &border);
 786
 787         if (view->dual_page) {
 788                 ev_page_cache_get_height_to_page (view->page_cache, page,
 789                                                   view->rotation, zoom, NULL, &offset);
 790                 offset += (page / 2 + 1) * view->spacing + (page / 2) * (border.top + border.bottom);
 791         } else {
 792                 ev_page_cache_get_height_to_page (view->page_cache, page,
 793                                                   view->rotation, zoom, &offset, NULL);
 794                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
 795         }
 796
 797         *y_offset = offset;
 798         return;
 799 }
 800
 801 static gboolean
 802 get_page_extents (EvView       *view,
 803                   gint          page,
 804                   GdkRectangle *page_area,
 805                   GtkBorder    *border)
 806 {
 807         GtkWidget *widget;
 808         int width, height;
 809
 810         widget = GTK_WIDGET (view);
 811
 812         /* Get the size of the page */
 813         ev_page_cache_get_size (view->page_cache, page,
 814                                 view->rotation,
 815                                 view->scale,
 816                                 &width, &height);
 817         compute_border (view, width, height, border);
 818         page_area->width = width + border->left + border->right;
 819         page_area->height = height + border->top + border->bottom;
 820
 821         if (view->presentation) {
 822                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
 823                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
 824         } else if (view->continuous) {
 825                 gint max_width;
 826                 gint x, y;
 827
 828                 ev_page_cache_get_max_width (view->page_cache, view->rotation,
 829                                              view->scale, &max_width);
 830                 max_width = max_width + border->left + border->right;
 831                 /* Get the location of the bounding box */
 832                 if (view->dual_page) {
 833                         x = view->spacing + (page % 2) * (max_width + view->spacing);
 834                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
 835                         if (page % 2 == 0)
 836                                 x = x + (max_width - width - border->left - border->right);
 837                 } else {
 838                         x = view->spacing;
 839                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
 840                 }
 841
 842                 get_page_y_offset (view, page, view->scale, &y);
 843
 844                 page_area->x = x;
 845                 page_area->y = y;
 846         } else {
 847                 gint x, y;
 848                 if (view->dual_page) {
 849                         gint width_2, height_2;
 850                         gint max_width = width;
 851                         gint max_height = height;
 852                         GtkBorder overall_border;
 853                         gint other_page;
 854
 855                         other_page = page ^ 1;
 856
 857                         /* First, we get the bounding box of the two pages */
 858                         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
 859                                 ev_page_cache_get_size (view->page_cache,
 860                                                         other_page,
 861                                                         view->rotation,
 862                                                         view->scale,
 863                                                         &width_2, &height_2);
 864                                 if (width_2 > width)
 865                                         max_width = width_2;
 866                                 if (height_2 > height)
 867                                         max_height = height_2;
 868                         }
 869                         compute_border (view, max_width, max_height, &overall_border);
 870
 871                         /* Find the offsets */
 872                         x = view->spacing;
 873                         y = view->spacing;
 874
 875                         /* Adjust for being the left or right page */
 876                         if (page % 2 == 0)
 877                                 x = x + max_width - width;
 878                         else
 879                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
 880
 881                         y = y + (max_height - height)/2;
 882
 883                         /* Adjust for extra allocation */
 884                         x = x + MAX (0, widget->allocation.width -
 885                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
 886                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
 887                 } else {
 888                         x = view->spacing;
 889                         y = view->spacing;
 890
 891                         /* Adjust for extra allocation */
 892                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
 893                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
 894                 }
 895
 896                 page_area->x = x;
 897                 page_area->y = y;
 898         }
 899
 900         return TRUE;
 901 }
 902
 903 static void
 904 view_point_to_doc_point (EvView *view,
 905                          GdkPoint *view_point,
 906                          GdkRectangle *page_area,
 907                          double  *doc_point_x,
 908                          double  *doc_point_y)
 909 {
 910         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
 911         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
 912 }
 913
 914 static void
 915 view_rect_to_doc_rect (EvView *view,
 916                        GdkRectangle *view_rect,
 917                        GdkRectangle *page_area,
 918                        EvRectangle  *doc_rect)
 919 {
 920         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
 921         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
 922         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
 923         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
 924 }
 925
 926 static void
 927 doc_point_to_view_point (EvView       *view,
 928                          int           page,
 929                          EvPoint      *doc_point,
 930                          GdkPoint     *view_point)
 931 {
 932         GdkRectangle page_area;
 933         GtkBorder border;
 934         double x, y;
 935         int width, height;
 936
 937         ev_page_cache_get_size (view->page_cache, page,
 938                                 view->rotation,
 939                                 1.0,
 940                                 &width, &height);
 941
 942         if (view->rotation == 0) {
 943                 x = doc_point->x;
 944                 y = doc_point->y;
 945         } else if (view->rotation == 90) {
 946                 x = width - doc_point->y;
 947                 y = doc_point->x;
 948         } else if (view->rotation == 180) {
 949                 x = width - doc_point->x;
 950                 y = height - doc_point->y;
 951         } else if (view->rotation == 270) {
 952                 x = doc_point->y;
 953                 y = height - doc_point->x;
 954         } else {
 955                 g_assert_not_reached ();
 956         }
 957
 958         get_page_extents (view, page, &page_area, &border);
 959
 960         view_point->x = x * view->scale + page_area.x;
 961         view_point->y = y * view->scale + page_area.y;
 962 }
 963
 964 static void
 965 doc_rect_to_view_rect (EvView       *view,
 966                        int           page,
 967                        EvRectangle  *doc_rect,
 968                        GdkRectangle *view_rect)
 969 {
 970         GdkRectangle page_area;
 971         GtkBorder border;
 972         double x, y, w, h;
 973         int width, height;
 974
 975         ev_page_cache_get_size (view->page_cache, page,
 976                                 view->rotation,
 977                                 1.0,
 978                                 &width, &height);
 979
 980         if (view->rotation == 0) {
 981                 x = doc_rect->x1;
 982                 y = doc_rect->y1;
 983                 w = doc_rect->x2 - doc_rect->x1;
 984                 h = doc_rect->y2 - doc_rect->y1;
 985         } else if (view->rotation == 90) {
 986                 x = width - doc_rect->y2;
 987                 y = doc_rect->x1;
 988                 w = doc_rect->y2 - doc_rect->y1;
 989                 h = doc_rect->x2 - doc_rect->x1;
 990         } else if (view->rotation == 180) {
 991                 x = width - doc_rect->x2;
 992                 y = height - doc_rect->y2;
 993                 w = doc_rect->x2 - doc_rect->x1;
 994                 h = doc_rect->y2 - doc_rect->y1;
 995         } else if (view->rotation == 270) {
 996                 x = doc_rect->y1;
 997                 y = height - doc_rect->x2;
 998                 w = doc_rect->y2 - doc_rect->y1;
 999                 h = doc_rect->x2 - doc_rect->x1;
1000         } else {
1001                 g_assert_not_reached ();
1002         }
1003
1004         get_page_extents (view, page, &page_area, &border);
1005
1006         view_rect->x = x * view->scale + page_area.x;
1007         view_rect->y = y * view->scale + page_area.y;
1008         view_rect->width = w * view->scale;
1009         view_rect->height = h * view->scale;
1010 }
1011
1012 static void
1013 find_page_at_location (EvView  *view,
1014                        gdouble  x,
1015                        gdouble  y,
1016                        gint    *page,
1017                        gint    *x_offset,
1018                        gint    *y_offset)
1019 {
1020         int i;
1021
1022         if (view->document == NULL)
1023                 return;
1024
1025         g_assert (page);
1026         g_assert (x_offset);
1027         g_assert (y_offset);
1028
1029         for (i = view->start_page; i <= view->end_page; i++) {
1030                 GdkRectangle page_area;
1031                 GtkBorder border;
1032
1033                 if (! get_page_extents (view, i, &page_area, &border))
1034                         continue;
1035
1036                 if ((x >= page_area.x + border.left) &&
1037                     (x < page_area.x + page_area.width - border.right) &&
1038                     (y >= page_area.y + border.top) &&
1039                     (y < page_area.y + page_area.height - border.bottom)) {
1040                         *page = i;
1041                         *x_offset = x - (page_area.x + border.left);
1042                         *y_offset = y - (page_area.y + border.top);
1043                         return;
1044                 }
1045         }
1046
1047         *page = -1;
1048 }
1049
1050 static gboolean
1051 location_in_text (EvView  *view,
1052                   gdouble  x,
1053                   gdouble  y)
1054 {
1055         GdkRegion *region;
1056         gint page = -1;
1057         gint x_offset = 0, y_offset = 0;
1058
1059         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1060
1061         if (page == -1)
1062                 return FALSE;
1063
1064         region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page);
1065
1066         if (region)
1067                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1068         else
1069                 return FALSE;
1070 }
1071
1072 /*** Hyperref ***/
1073 static EvLink *
1074 get_link_at_location (EvView  *view,
1075                       gdouble  x,
1076                       gdouble  y)
1077 {
1078         gint page = -1;
1079         gint x_offset = 0, y_offset = 0;
1080         GList *link_mapping;
1081
1082         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1083
1084         if (page == -1)
1085                 return NULL;
1086
1087         link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
1088
1089         if (link_mapping)
1090                 return ev_link_mapping_find (link_mapping, x_offset / view->scale, y_offset / view->scale);
1091         else
1092                 return NULL;
1093 }
1094
1095 static void
1096 scroll_to_xyz_link (EvView *view, EvLink *link)
1097 {
1098         GdkPoint view_point;
1099         EvPoint doc_point;
1100
1101         doc_point.x = ev_link_get_left (link);
1102         doc_point.y = ev_link_get_top (link);
1103
1104         doc_point_to_view_point (view, ev_link_get_page (link),
1105                                  &doc_point, &view_point);
1106
1107         gtk_adjustment_set_value (view->hadjustment, view_point.x);
1108         gtk_adjustment_set_value (view->vadjustment, view_point.y);
1109 }
1110
1111 static void
1112 go_to_link (EvView *view, EvLink *link)
1113 {
1114         EvLinkType type;
1115         const char *uri;
1116         int page;
1117
1118         type = ev_link_get_link_type (link);
1119
1120         switch (type) {
1121                 case EV_LINK_TYPE_TITLE:
1122                         break;
1123                 case EV_LINK_TYPE_PAGE:
1124                         page = ev_link_get_page (link);
1125                         ev_page_cache_set_current_page (view->page_cache, page);
1126                         break;
1127                 case EV_LINK_TYPE_PAGE_XYZ:
1128                         scroll_to_xyz_link (view, link);
1129                         break;
1130                 case EV_LINK_TYPE_EXTERNAL_URI:
1131                         uri = ev_link_get_uri (link);
1132                         gnome_vfs_url_show (uri);
1133                         break;
1134         }
1135 }
1136
1137 static char *
1138 tip_from_link (EvView *view, EvLink *link)
1139 {
1140         EvLinkType type;
1141         char *msg = NULL;
1142         char *page_label;
1143
1144         type = ev_link_get_link_type (link);
1145
1146         switch (type) {
1147                 case EV_LINK_TYPE_TITLE:
1148                         if (ev_link_get_title (link))
1149                                 msg = g_strdup (ev_link_get_title (link));
1150                         break;
1151                 case EV_LINK_TYPE_PAGE:
1152                 case EV_LINK_TYPE_PAGE_XYZ:
1153                         page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link));
1154                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1155                         g_free (page_label);
1156                         break;
1157                 case EV_LINK_TYPE_EXTERNAL_URI:
1158                         msg = g_strdup (ev_link_get_uri (link));
1159                         break;
1160                 default:
1161                         break;
1162         }
1163
1164         return msg;
1165 }
1166
1167
1168 /*** GtkWidget implementation ***/
1169
1170 static void
1171 ev_view_size_request_continuous_dual_page (EvView         *view,
1172                                            GtkRequisition *requisition)
1173 {
1174         int max_width;
1175         gint n_pages;
1176         GtkBorder border;
1177
1178         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1179                                      view->scale, &max_width);
1180         compute_border (view, max_width, max_width, &border);
1181
1182         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1183
1184         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1185         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1186
1187         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1188                 requisition->width = 1;
1189         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1190                 requisition->width = 1;
1191                 /* FIXME: This could actually be set on one page docs or docs
1192                  * with a strange aspect ratio. */
1193                 /* requisition->height = 1;*/
1194         }
1195 }
1196
1197 static void
1198 ev_view_size_request_continuous (EvView         *view,
1199                                  GtkRequisition *requisition)
1200 {
1201         int max_width;
1202         int n_pages;
1203         GtkBorder border;
1204
1205
1206         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1207                                      view->scale, &max_width);
1208         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1209         compute_border (view, max_width, max_width, &border);
1210
1211         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1212         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1213
1214         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1215                 requisition->width = 1;
1216         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1217                 requisition->width = 1;
1218                 /* FIXME: This could actually be set on one page docs or docs
1219                  * with a strange aspect ratio. */
1220                 /* requisition->height = 1;*/
1221         }
1222 }
1223
1224 static void
1225 ev_view_size_request_dual_page (EvView         *view,
1226                                 GtkRequisition *requisition)
1227 {
1228         GtkBorder border;
1229         gint width, height;
1230
1231         /* Find the largest of the two. */
1232         ev_page_cache_get_size (view->page_cache,
1233                                 view->current_page,
1234                                 view->rotation,
1235                                 view->scale,
1236                                 &width, &height);
1237         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1238                 gint width_2, height_2;
1239                 ev_page_cache_get_size (view->page_cache,
1240                                         view->current_page + 1,
1241                                         view->rotation,
1242                                         view->scale,
1243                                         &width_2, &height_2);
1244                 if (width_2 > width) {
1245                         width = width_2;
1246                         height = height_2;
1247                 }
1248         }
1249         compute_border (view, width, height, &border);
1250
1251         requisition->width = ((width + border.left + border.right) * 2) +
1252                 (view->spacing * 3);
1253         requisition->height = (height + border.top + border.bottom) +
1254                 (view->spacing * 2);
1255
1256         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1257                 requisition->width = 1;
1258         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1259                 requisition->width = 1;
1260                 requisition->height = 1;
1261         }
1262 }
1263
1264 static void
1265 ev_view_size_request_single_page (EvView         *view,
1266                                   GtkRequisition *requisition)
1267 {
1268         GtkBorder border;
1269         gint width, height;
1270
1271         ev_page_cache_get_size (view->page_cache,
1272                                 view->current_page,
1273                                 view->rotation,
1274                                 view->scale,
1275                                 &width, &height);
1276         compute_border (view, width, height, &border);
1277
1278         requisition->width = width + border.left + border.right + (2 * view->spacing);
1279         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1280
1281         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1282                 requisition->width = 1;
1283                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1284         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1285                 requisition->width = 1;
1286                 requisition->height = 1;
1287         }
1288 }
1289
1290 static void
1291 ev_view_size_request (GtkWidget      *widget,
1292                       GtkRequisition *requisition)
1293 {
1294         EvView *view = EV_VIEW (widget);
1295
1296         if (view->document == NULL) {
1297                 requisition->width = 1;
1298                 requisition->height = 1;
1299                 return;
1300         }
1301
1302         if (view->presentation) {
1303                 requisition->width = 1;
1304                 requisition->height = 1;
1305                 return;
1306         }
1307
1308         if (view->continuous && view->dual_page)
1309                 ev_view_size_request_continuous_dual_page (view, requisition);
1310         else if (view->continuous)
1311                 ev_view_size_request_continuous (view, requisition);
1312         else if (view->dual_page)
1313                 ev_view_size_request_dual_page (view, requisition);
1314         else
1315                 ev_view_size_request_single_page (view, requisition);
1316 }
1317
1318 static void
1319 ev_view_size_allocate (GtkWidget      *widget,
1320                        GtkAllocation  *allocation)
1321 {
1322         EvView *view = EV_VIEW (widget);
1323
1324         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1325                   view->sizing_mode == EV_SIZING_BEST_FIT) {
1326
1327                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1328
1329                 ev_view_size_request (widget, &widget->requisition);
1330         }
1331
1332         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1333         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1334
1335         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1336         view->pending_resize = FALSE;
1337
1338         if (view->document)
1339                 view_update_range_and_current_page (view);
1340
1341         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1342 }
1343
1344 static void
1345 ev_view_realize (GtkWidget *widget)
1346 {
1347         EvView *view = EV_VIEW (widget);
1348         GdkWindowAttr attributes;
1349
1350         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1351
1352
1353         attributes.window_type = GDK_WINDOW_CHILD;
1354         attributes.wclass = GDK_INPUT_OUTPUT;
1355         attributes.visual = gtk_widget_get_visual (widget);
1356         attributes.colormap = gtk_widget_get_colormap (widget);
1357
1358         attributes.x = widget->allocation.x;
1359         attributes.y = widget->allocation.y;
1360         attributes.width = widget->allocation.width;
1361         attributes.height = widget->allocation.height;
1362         attributes.event_mask = GDK_EXPOSURE_MASK |
1363                                 GDK_BUTTON_PRESS_MASK |
1364                                 GDK_BUTTON_RELEASE_MASK |
1365                                 GDK_SCROLL_MASK |
1366                                 GDK_KEY_PRESS_MASK |
1367                                 GDK_POINTER_MOTION_MASK |
1368                                 GDK_LEAVE_NOTIFY_MASK;
1369
1370         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1371                                          &attributes,
1372                                          GDK_WA_X | GDK_WA_Y |
1373                                          GDK_WA_COLORMAP |
1374                                          GDK_WA_VISUAL);
1375         gdk_window_set_user_data (widget->window, widget);
1376         widget->style = gtk_style_attach (widget->style, widget->window);
1377
1378         if (view->presentation)
1379                 gdk_window_set_background (widget->window, &widget->style->black);
1380         else
1381                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1382 }
1383
1384 static void
1385 ev_view_unrealize (GtkWidget *widget)
1386 {
1387         GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget);
1388 }
1389
1390 static gboolean
1391 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1392 {
1393         EvView *view = EV_VIEW (widget);
1394
1395         if ((event->state & GDK_CONTROL_MASK) != 0) {
1396
1397                  ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1398
1399                  if (event->direction == GDK_SCROLL_UP ||
1400                         event->direction == GDK_SCROLL_LEFT) {
1401                             if (ev_view_can_zoom_in (view)) {
1402                                     ev_view_zoom_in (view);
1403                             }
1404                  } else {
1405                             if (ev_view_can_zoom_out (view)) {
1406                                     ev_view_zoom_out (view);
1407                             }
1408                  }
1409                  return TRUE;
1410         }
1411
1412         if ((event->state & GDK_SHIFT_MASK) != 0) {
1413                 if (event->direction == GDK_SCROLL_UP)
1414                         event->direction = GDK_SCROLL_LEFT;
1415                 if (event->direction == GDK_SCROLL_DOWN)
1416                         event->direction = GDK_SCROLL_RIGHT;
1417         }
1418
1419         return FALSE;
1420 }
1421
1422 static EvViewSelection *
1423 find_selection_for_page (EvView *view,
1424                          gint    page)
1425 {
1426         GList *list;
1427
1428         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1429                 EvViewSelection *selection;
1430
1431                 selection = (EvViewSelection *) list->data;
1432
1433                 if (selection->page == page)
1434                         return selection;
1435         }
1436
1437         return NULL;
1438 }
1439
1440 static gboolean
1441 ev_view_expose_event (GtkWidget      *widget,
1442                       GdkEventExpose *event)
1443 {
1444         EvView *view = EV_VIEW (widget);
1445         int i;
1446
1447         if (view->document == NULL)
1448                 return FALSE;
1449
1450         for (i = view->start_page; i <= view->end_page; i++) {
1451                 GdkRectangle page_area;
1452                 GtkBorder border;
1453
1454                 if (!get_page_extents (view, i, &page_area, &border))
1455                         continue;
1456
1457                 page_area.x -= view->scroll_x;
1458                 page_area.y -= view->scroll_y;
1459
1460                 draw_one_page (view, i, &page_area, &border, &(event->area));
1461
1462                 if (EV_IS_DOCUMENT_FIND (view->document))
1463                         highlight_find_results (view, i);
1464         }
1465
1466         return FALSE;
1467 }
1468
1469 static gboolean
1470 ev_view_button_press_event (GtkWidget      *widget,
1471                             GdkEventButton *event)
1472 {
1473         EvView *view = EV_VIEW (widget);
1474
1475         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1476                 gtk_widget_grab_focus (widget);
1477         }
1478
1479         view->pressed_button = event->button;
1480
1481         switch (event->button) {
1482                 case 1:
1483                         if (view->selection_info.selections) {
1484                                 clear_selection (view);
1485                                 gtk_widget_queue_draw (widget);
1486                         }
1487
1488                         view->selection_info.start.x = event->x + view->scroll_x;
1489                         view->selection_info.start.y = event->y + view->scroll_y;
1490                         return TRUE;
1491                 case 2:
1492                         /* use root coordinates as reference point because
1493                          * scrolling changes window relative coordinates */
1494                         view->drag_info.start.x = event->x_root;
1495                         view->drag_info.start.y = event->y_root;
1496                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1497                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1498
1499                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1500
1501                         return TRUE;
1502         }
1503
1504         return FALSE;
1505 }
1506
1507
1508 static gboolean
1509 selection_update_idle_cb (EvView *view)
1510 {
1511         GdkPoint point;
1512         point.x = view->motion_x;
1513         point.y = view->motion_y;
1514         compute_selections (view, &view->selection_info.start, &point);
1515
1516         view->selection_update_id = 0;
1517         return FALSE;
1518 }
1519
1520 static gboolean
1521 ev_view_motion_notify_event (GtkWidget      *widget,
1522                              GdkEventMotion *event)
1523 {
1524         EvView *view = EV_VIEW (widget);
1525
1526         if (!view->document)
1527                 return FALSE;
1528
1529         /* For the Evince 0.4.x release, we limit selection to un-rotated
1530          * documents only.
1531          */
1532         if (view->pressed_button == 1 &&
1533             view->rotation == 0) {
1534                 view->selection_info.in_selection = TRUE;
1535                 view->motion_x = event->x + view->scroll_x;
1536                 view->motion_y = event->y + view->scroll_y;
1537
1538                 /* Queue an idle to handle the motion.  We do this because
1539                  * handling any selection events in the motion could be slower
1540                  * than new motion events reach us.  We always put it in the
1541                  * idle to make sure we catch up and don't visibly lag the
1542                  * mouse. */
1543                 if (! view->selection_update_id)
1544                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
1545
1546                 return TRUE;
1547         } else if (view->pressed_button == 2) {
1548                 if (!view->drag_info.in_drag) {
1549                         gboolean start;
1550
1551                         start = gtk_drag_check_threshold (widget,
1552                                                           view->drag_info.start.x,
1553                                                           view->drag_info.start.y,
1554                                                           event->x_root,
1555                                                           event->y_root);
1556                         view->drag_info.in_drag = start;
1557                 }
1558
1559                 if (view->drag_info.in_drag) {
1560                         int dx, dy;
1561                         gdouble dhadj_value, dvadj_value;
1562
1563                         dx = event->x_root - view->drag_info.start.x;
1564                         dy = event->y_root - view->drag_info.start.y;
1565
1566                         dhadj_value = view->hadjustment->page_size *
1567                                       (gdouble)dx / widget->allocation.width;
1568                         dvadj_value = view->vadjustment->page_size *
1569                                       (gdouble)dy / widget->allocation.height;
1570
1571                         /* clamp scrolling to visible area */
1572                         gtk_adjustment_set_value (view->hadjustment,
1573                                                   MIN(view->drag_info.hadj - dhadj_value,
1574                                                       view->hadjustment->upper -
1575                                                       view->hadjustment->page_size));
1576                         gtk_adjustment_set_value (view->vadjustment,
1577                                                   MIN(view->drag_info.vadj - dvadj_value,
1578                                                       view->vadjustment->upper -
1579                                                       view->vadjustment->page_size));
1580
1581                         return TRUE;
1582                 }
1583         /* For the Evince 0.4.x release, we limit links to un-rotated documents
1584          * only.
1585          */
1586         } else if (view->pressed_button <= 0 &&
1587                    view->rotation == 0) {
1588                 EvLink *link;
1589
1590                 link = get_link_at_location (view, event->x + view->scroll_x, event->y + view->scroll_y);
1591
1592                 if (view->link_tooltip == NULL) {
1593                         view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1594                 }
1595
1596                 if (view->hovered_link != link) {
1597                         view->hovered_link = link;
1598                         ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1599                 }
1600
1601                 if (link) {
1602                         char *msg = tip_from_link (view, link);
1603
1604                         ev_tooltip_set_position (EV_TOOLTIP (view->link_tooltip), event->x, event->y);
1605                         ev_tooltip_set_text (EV_TOOLTIP (view->link_tooltip), msg);
1606                         ev_tooltip_activate (EV_TOOLTIP (view->link_tooltip));
1607                         g_free (msg);
1608
1609                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1610                 } else if (location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y)) {
1611                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1612                 } else {
1613                         ev_view_set_status (view, NULL);
1614                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1615                             view->cursor == EV_VIEW_CURSOR_IBEAM)
1616                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1617                 }
1618                 return TRUE;
1619         }
1620
1621         return FALSE;
1622 }
1623
1624 static gboolean
1625 ev_view_button_release_event (GtkWidget      *widget,
1626                               GdkEventButton *event)
1627 {
1628         EvView *view = EV_VIEW (widget);
1629
1630         if (view->pressed_button == 2) {
1631                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1632         }
1633
1634         view->pressed_button = -1;
1635         view->drag_info.in_drag = FALSE;
1636
1637         if (view->selection_info.selections) {
1638                 ev_view_update_primary_selection (view);
1639         } else if (view->document) {
1640                 EvLink *link;
1641
1642                 link = get_link_at_location (view, event->x + view->scroll_x, event->y + view->scroll_y);
1643                 if (link) {
1644                         go_to_link (view, link);
1645                 }
1646         }
1647
1648         return FALSE;
1649 }
1650
1651 static gint
1652 ev_view_focus_in (GtkWidget     *widget,
1653                   GdkEventFocus *event)
1654 {
1655         if (EV_VIEW (widget)->pixbuf_cache)
1656                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1657         gtk_widget_queue_draw (widget);
1658
1659         return FALSE;
1660 }
1661
1662 static gint
1663 ev_view_focus_out (GtkWidget     *widget,
1664                      GdkEventFocus *event)
1665 {
1666         if (EV_VIEW (widget)->pixbuf_cache)
1667                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1668         gtk_widget_queue_draw (widget);
1669
1670         return FALSE;
1671 }
1672
1673 static gboolean
1674 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
1675 {
1676         EvView *view = EV_VIEW (widget);
1677
1678         ev_view_set_status (view, NULL);
1679
1680         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1681             view->cursor == EV_VIEW_CURSOR_IBEAM)
1682                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1683
1684         return FALSE;
1685 }
1686
1687 static void
1688 ev_view_style_set (GtkWidget *widget,
1689                    GtkStyle  *old_style)
1690 {
1691         if (EV_VIEW (widget)->pixbuf_cache)
1692                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1693
1694         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
1695 }
1696
1697
1698 /*** Drawing ***/
1699
1700 static guint32
1701 ev_gdk_color_to_rgb (const GdkColor *color)
1702 {
1703   guint32 result;
1704   result = (0xff0000 | (color->red & 0xff00));
1705   result <<= 8;
1706   result |= ((color->green & 0xff00) | (color->blue >> 8));
1707   return result;
1708 }
1709
1710 static void
1711 draw_rubberband (GtkWidget *widget, GdkWindow *window,
1712                  const GdkRectangle *rect, guchar alpha)
1713 {
1714         GdkGC *gc;
1715         GdkPixbuf *pixbuf;
1716         GdkColor *fill_color_gdk;
1717         guint fill_color;
1718
1719         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
1720         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
1721
1722         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
1723                                  rect->width, rect->height);
1724         gdk_pixbuf_fill (pixbuf, fill_color);
1725
1726         gdk_draw_pixbuf (window, NULL, pixbuf,
1727                          0, 0,
1728                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1729                          rect->width, rect->height,
1730                          GDK_RGB_DITHER_NONE,
1731                          0, 0);
1732
1733         g_object_unref (pixbuf);
1734
1735         gc = gdk_gc_new (window);
1736         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
1737         gdk_draw_rectangle (window, gc, FALSE,
1738                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1739                             rect->width - 1,
1740                             rect->height - 1);
1741         g_object_unref (gc);
1742
1743         gdk_color_free (fill_color_gdk);
1744 }
1745
1746
1747 static void
1748 highlight_find_results (EvView *view, int page)
1749 {
1750         EvDocumentFind *find;
1751         int i, results = 0;
1752
1753         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
1754
1755         find = EV_DOCUMENT_FIND (view->document);
1756
1757         results = ev_document_find_get_n_results (find, page);
1758
1759         for (i = 0; i < results; i++) {
1760                 EvRectangle rectangle;
1761                 GdkRectangle view_rectangle;
1762                 guchar alpha;
1763
1764                 if (i == view->find_result && page == view->find_page) {
1765                         alpha = 0x90;
1766                 } else {
1767                         alpha = 0x20;
1768                 }
1769
1770                 ev_document_find_get_result (find, page, i, &rectangle);
1771                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
1772                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
1773                                  &view_rectangle, alpha);
1774         }
1775 }
1776
1777 static void
1778 draw_loading_text (EvView       *view,
1779                    GdkRectangle *page_area,
1780                    GdkRectangle *expose_area)
1781 {
1782         PangoLayout *layout;
1783         PangoFontDescription *font_desc;
1784         PangoRectangle logical_rect;
1785         double real_scale;
1786         int target_width;
1787
1788         const char *loading_text = _("Loading...");
1789
1790         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
1791
1792         font_desc = pango_font_description_new ();
1793
1794
1795         /* We set the font to be 10 points, get the size, and scale appropriately */
1796         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
1797         pango_layout_set_font_description (layout, font_desc);
1798         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
1799
1800         /* Make sure we fit the middle of the page */
1801         target_width = MAX (page_area->width / 2, 1);
1802         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
1803         pango_font_description_set_size (font_desc, (int)real_scale);
1804         pango_layout_set_font_description (layout, font_desc);
1805         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
1806
1807         gtk_paint_layout (GTK_WIDGET (view)->style,
1808                           GTK_WIDGET (view)->window,
1809                           GTK_WIDGET_STATE (view),
1810                           FALSE,
1811                           page_area,
1812                           GTK_WIDGET (view),
1813                           NULL,
1814                           page_area->x + (target_width/2),
1815                           page_area->y + (page_area->height - logical_rect.height) / 2,
1816                           layout);
1817
1818         pango_font_description_free (font_desc);
1819         g_object_unref (layout);
1820 }
1821
1822 static void
1823 draw_one_page (EvView          *view,
1824                gint             page,
1825                GdkRectangle    *page_area,
1826                GtkBorder       *border,
1827                GdkRectangle    *expose_area)
1828 {
1829         gint width, height;
1830         GdkPixbuf *current_pixbuf;
1831         GdkRectangle overlap;
1832         GdkRectangle real_page_area;
1833         EvViewSelection *selection;
1834
1835         g_assert (view->document);
1836         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
1837                 return;
1838
1839         selection = find_selection_for_page (view, page);
1840         ev_page_cache_get_size (view->page_cache,
1841                                 page, view->rotation,
1842                                 view->scale,
1843                                 &width, &height);
1844         /* Render the document itself */
1845         real_page_area = *page_area;
1846
1847         real_page_area.x += border->left;
1848         real_page_area.y += border->top;
1849         real_page_area.width -= (border->left + border->right);
1850         real_page_area.height -= (border->top + border->bottom);
1851
1852         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
1853                                          GTK_WIDGET (view),
1854                                          page_area, border);
1855
1856         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
1857                 GdkPixbuf *selection_pixbuf = NULL;
1858                 GdkPixbuf *scaled_image;
1859                 GdkPixbuf *scaled_selection;
1860
1861                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
1862
1863                 /* Get the selection pixbuf iff we have something to draw */
1864                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
1865                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
1866                                                                                  page,
1867                                                                                  view->scale,
1868                                                                                  NULL);
1869
1870                 if (current_pixbuf == NULL)
1871                         scaled_image = NULL;
1872                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
1873                          height == gdk_pixbuf_get_height (current_pixbuf))
1874                         scaled_image = g_object_ref (current_pixbuf);
1875                 else
1876                         /* FIXME: We don't want to scale the whole area, just the right
1877                          * area of it */
1878                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
1879                                                                 width, height,
1880                                                                 GDK_INTERP_NEAREST);
1881
1882                 if (selection_pixbuf == NULL)
1883                         scaled_selection = NULL;
1884                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
1885                          height == gdk_pixbuf_get_height (selection_pixbuf))
1886                         scaled_selection = g_object_ref (selection_pixbuf);
1887                 else
1888                         /* FIXME: We don't want to scale the whole area, just the right
1889                          * area of it */
1890                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
1891                                                                     width, height,
1892                                                                     GDK_INTERP_NEAREST);
1893
1894                 if (scaled_image) {
1895                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
1896                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
1897                                          scaled_image,
1898                                          overlap.x - real_page_area.x,
1899                                          overlap.y - real_page_area.y,
1900                                          overlap.x, overlap.y,
1901                                          overlap.width, overlap.height,
1902                                          GDK_RGB_DITHER_NORMAL,
1903                                          0, 0);
1904                         g_object_unref (scaled_image);
1905                 } else {
1906                         draw_loading_text (view,
1907                                            &real_page_area,
1908                                            expose_area);
1909                 }
1910
1911                 if (scaled_selection) {
1912                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
1913                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
1914                                          scaled_selection,
1915                                          overlap.x - real_page_area.x,
1916                                          overlap.y - real_page_area.y,
1917                                          overlap.x, overlap.y,
1918                                          overlap.width, overlap.height,
1919                                          GDK_RGB_DITHER_NORMAL,
1920                                          0, 0);
1921                         g_object_unref (scaled_selection);
1922                 }
1923         }
1924 }
1925
1926 /*** GObject functions ***/
1927
1928 static void
1929 ev_view_finalize (GObject *object)
1930 {
1931         EvView *view = EV_VIEW (object);
1932
1933         LOG ("Finalize");
1934
1935         g_free (view->status);
1936         g_free (view->find_status);
1937
1938         clear_selection (view);
1939
1940         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
1941 }
1942
1943 static void
1944 ev_view_destroy (GtkObject *object)
1945 {
1946         EvView *view = EV_VIEW (object);
1947
1948         if (view->document) {
1949                 g_object_unref (view->document);
1950                 view->document = NULL;
1951         }
1952
1953         if (view->pixbuf_cache) {
1954                 g_object_unref (view->pixbuf_cache);
1955                 view->pixbuf_cache = NULL;
1956         }
1957
1958         if (view->link_tooltip) {
1959                 gtk_widget_destroy (view->link_tooltip);
1960         }
1961
1962         ev_view_set_scroll_adjustments (view, NULL, NULL);
1963
1964         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
1965 }
1966
1967 static void
1968 ev_view_set_property (GObject      *object,
1969                       guint         prop_id,
1970                       const GValue *value,
1971                       GParamSpec   *pspec)
1972 {
1973         EvView *view = EV_VIEW (object);
1974
1975         switch (prop_id)
1976         {
1977         case PROP_CONTINUOUS:
1978                 ev_view_set_continuous (view, g_value_get_boolean (value));
1979                 break;
1980         case PROP_DUAL_PAGE:
1981                 ev_view_set_dual_page (view, g_value_get_boolean (value));
1982                 break;
1983         case PROP_FULLSCREEN:
1984                 ev_view_set_fullscreen (view, g_value_get_boolean (value));
1985                 break;
1986         case PROP_PRESENTATION:
1987                 ev_view_set_presentation (view, g_value_get_boolean (value));
1988                 break;
1989         case PROP_SIZING_MODE:
1990                 ev_view_set_sizing_mode (view, g_value_get_enum (value));
1991                 break;
1992         case PROP_ZOOM:
1993                 ev_view_set_zoom (view, g_value_get_double (value), FALSE);
1994                 break;
1995         case PROP_ROTATION:
1996                 ev_view_set_rotation (view, g_value_get_int (value));
1997                 break;
1998         default:
1999                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2000         }
2001 }
2002
2003 static void
2004 ev_view_get_property (GObject *object,
2005                       guint prop_id,
2006                       GValue *value,
2007                       GParamSpec *pspec)
2008 {
2009         EvView *view = EV_VIEW (object);
2010
2011         switch (prop_id)
2012         {
2013         case PROP_STATUS:
2014                 g_value_set_string (value, view->status);
2015                 break;
2016         case PROP_FIND_STATUS:
2017                 g_value_set_string (value, view->status);
2018                 break;
2019         case PROP_CONTINUOUS:
2020                 g_value_set_boolean (value, view->continuous);
2021                 break;
2022         case PROP_DUAL_PAGE:
2023                 g_value_set_boolean (value, view->dual_page);
2024                 break;
2025         case PROP_FULLSCREEN:
2026                 g_value_set_boolean (value, view->fullscreen);
2027                 break;
2028         case PROP_PRESENTATION:
2029                 g_value_set_boolean (value, view->presentation);
2030                 break;
2031         case PROP_SIZING_MODE:
2032                 g_value_set_enum (value, view->sizing_mode);
2033                 break;
2034         case PROP_ZOOM:
2035                 g_value_set_double (value, view->scale);
2036                 break;
2037         case PROP_ROTATION:
2038                 g_value_set_int (value, view->rotation);
2039                 break;
2040         default:
2041                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2042         }
2043 }
2044
2045 static void
2046 ev_view_class_init (EvViewClass *class)
2047 {
2048         GObjectClass *object_class = G_OBJECT_CLASS (class);
2049         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
2050         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
2051         GtkBindingSet *binding_set;
2052
2053         object_class->finalize = ev_view_finalize;
2054         object_class->set_property = ev_view_set_property;
2055         object_class->get_property = ev_view_get_property;
2056
2057         widget_class->expose_event = ev_view_expose_event;
2058         widget_class->button_press_event = ev_view_button_press_event;
2059         widget_class->motion_notify_event = ev_view_motion_notify_event;
2060         widget_class->button_release_event = ev_view_button_release_event;
2061         widget_class->focus_in_event = ev_view_focus_in;
2062         widget_class->focus_out_event = ev_view_focus_out;
2063         widget_class->size_request = ev_view_size_request;
2064         widget_class->size_allocate = ev_view_size_allocate;
2065         widget_class->realize = ev_view_realize;
2066         widget_class->unrealize = ev_view_unrealize;
2067         widget_class->scroll_event = ev_view_scroll_event;
2068         widget_class->leave_notify_event = ev_view_leave_notify_event;
2069         widget_class->style_set = ev_view_style_set;
2070         gtk_object_class->destroy = ev_view_destroy;
2071
2072         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
2073         class->binding_activated = ev_view_binding_activated;
2074
2075         widget_class->set_scroll_adjustments_signal =
2076             g_signal_new ("set-scroll-adjustments",
2077                           G_OBJECT_CLASS_TYPE (object_class),
2078                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2079                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
2080                           NULL, NULL,
2081                           ev_marshal_VOID__OBJECT_OBJECT,
2082                           G_TYPE_NONE, 2,
2083                           GTK_TYPE_ADJUSTMENT,
2084                           GTK_TYPE_ADJUSTMENT);
2085
2086         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
2087                          G_TYPE_FROM_CLASS (object_class),
2088                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2089                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
2090                          NULL, NULL,
2091                          ev_marshal_VOID__ENUM_BOOLEAN,
2092                          G_TYPE_NONE, 2,
2093                          GTK_TYPE_SCROLL_TYPE,
2094                          G_TYPE_BOOLEAN);
2095
2096         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
2097                          G_TYPE_FROM_CLASS (object_class),
2098                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2099                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
2100                          NULL, NULL,
2101                          ev_marshal_VOID__VOID,
2102                          G_TYPE_NONE, 0, G_TYPE_NONE);
2103
2104         g_object_class_install_property (object_class,
2105                                          PROP_STATUS,
2106                                          g_param_spec_string ("status",
2107                                                               "Status Message",
2108                                                               "The status message",
2109                                                               NULL,
2110                                                               G_PARAM_READABLE));
2111
2112         g_object_class_install_property (object_class,
2113                                          PROP_FIND_STATUS,
2114                                          g_param_spec_string ("find-status",
2115                                                               "Find Status Message",
2116                                                               "The find status message",
2117                                                               NULL,
2118                                                               G_PARAM_READABLE));
2119
2120         g_object_class_install_property (object_class,
2121                                          PROP_CONTINUOUS,
2122                                          g_param_spec_boolean ("continuous",
2123                                                                "Continuous",
2124                                                                "Continuous scrolling mode",
2125                                                                TRUE,
2126                                                                G_PARAM_READWRITE));
2127
2128         g_object_class_install_property (object_class,
2129                                          PROP_DUAL_PAGE,
2130                                          g_param_spec_boolean ("dual-page",
2131                                                                "Dual Page",
2132                                                                "Two pages visible at once",
2133                                                                FALSE,
2134                                                                G_PARAM_READWRITE));
2135         g_object_class_install_property (object_class,
2136                                          PROP_FULLSCREEN,
2137                                          g_param_spec_boolean ("fullscreen",
2138                                                                "Full Screen",
2139                                                                "Draw page in a fullscreen fashion",
2140                                                                FALSE,
2141                                                                G_PARAM_READWRITE));
2142         g_object_class_install_property (object_class,
2143                                          PROP_PRESENTATION,
2144                                          g_param_spec_boolean ("presentation",
2145                                                                "Presentation",
2146                                                                "Draw page in presentation mode",
2147                                                                TRUE,
2148                                                                G_PARAM_READWRITE));
2149
2150         g_object_class_install_property (object_class,
2151                                          PROP_SIZING_MODE,
2152                                          g_param_spec_enum ("sizing-mode",
2153                                                             "Sizing Mode",
2154                                                             "Sizing Mode",
2155                                                             EV_TYPE_SIZING_MODE,
2156                                                             EV_SIZING_FIT_WIDTH,
2157                                                             G_PARAM_READWRITE));
2158
2159         g_object_class_install_property (object_class,
2160                                          PROP_ZOOM,
2161                                          g_param_spec_double ("zoom",
2162                                                               "Zoom factor",
2163                                                                "Zoom factor",
2164                                                                MIN_SCALE,
2165                                                                MAX_SCALE,
2166                                                                1.0,
2167                                                                G_PARAM_READWRITE));
2168         g_object_class_install_property (object_class,
2169                                          PROP_ROTATION,
2170                                          g_param_spec_double ("rotation",
2171                                                               "Rotation",
2172                                                                "Rotation",
2173                                                                0,
2174                                                                360,
2175                                                                0,
2176                                                                G_PARAM_READWRITE));
2177
2178         binding_set = gtk_binding_set_by_class (class);
2179
2180         add_scroll_binding_keypad (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
2181         add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
2182         add_scroll_binding_keypad (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
2183         add_scroll_binding_keypad (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
2184 }
2185
2186 static void
2187 ev_view_init (EvView *view)
2188 {
2189         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
2190
2191         view->spacing = 5;
2192         view->scale = 1.0;
2193         view->current_page = 0;
2194         view->pressed_button = -1;
2195         view->cursor = EV_VIEW_CURSOR_NORMAL;
2196         view->drag_info.in_drag = FALSE;
2197         view->selection_info.in_selection = FALSE;
2198         view->selection_mode = EV_VIEW_SELECTION_TEXT;
2199         view->continuous = TRUE;
2200         view->dual_page = FALSE;
2201         view->presentation = FALSE;
2202         view->fullscreen = FALSE;
2203         view->sizing_mode = EV_SIZING_FIT_WIDTH;
2204         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2205 }
2206
2207 /*** Callbacks ***/
2208
2209 static void
2210 find_changed_cb (EvDocument *document, int page, EvView *view)
2211 {
2212         jump_to_find_page (view, EV_VIEW_FIND_NEXT);
2213         jump_to_find_result (view);
2214         update_find_status_message (view);
2215
2216         if (view->current_page == page)
2217                 gtk_widget_queue_draw (GTK_WIDGET (view));
2218 }
2219
2220 static void
2221 job_finished_cb (EvPixbufCache *pixbuf_cache,
2222                  EvView        *view)
2223 {
2224         gtk_widget_queue_draw (GTK_WIDGET (view));
2225 }
2226
2227 static void
2228 page_changed_cb (EvPageCache *page_cache,
2229                  int          new_page,
2230                  EvView      *view)
2231 {
2232         if (view->current_page != new_page) {
2233
2234                 view->current_page = new_page;
2235                 view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2236                 gtk_widget_queue_resize (GTK_WIDGET (view));
2237
2238                 if (EV_IS_DOCUMENT_FIND (view->document)) {
2239                         view->find_page = new_page;
2240                         view->find_result = 0;
2241                         update_find_status_message (view);
2242                 }
2243         }
2244 }
2245
2246 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
2247                                          EvView *view)
2248 {
2249         int dx = 0, dy = 0;
2250
2251         if (! GTK_WIDGET_REALIZED (view))
2252                 return;
2253
2254         if (view->hadjustment) {
2255                 dx = view->scroll_x - (int) view->hadjustment->value;
2256                 view->scroll_x = (int) view->hadjustment->value;
2257         } else {
2258                 view->scroll_x = 0;
2259         }
2260
2261         if (view->vadjustment) {
2262                 dy = view->scroll_y - (int) view->vadjustment->value;
2263                 view->scroll_y = (int) view->vadjustment->value;
2264         } else {
2265                 view->scroll_y = 0;
2266         }
2267
2268
2269         if (view->pending_resize)
2270                 gtk_widget_queue_draw (GTK_WIDGET (view));
2271         else
2272                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
2273
2274
2275         if (view->document)
2276                 view_update_range_and_current_page (view);
2277 }
2278
2279 GtkWidget*
2280 ev_view_new (void)
2281 {
2282         GtkWidget *view;
2283
2284         view = g_object_new (EV_TYPE_VIEW, NULL);
2285
2286         return view;
2287 }
2288
2289 static void
2290 setup_caches (EvView *view)
2291 {
2292         view->page_cache = ev_page_cache_get (view->document);
2293         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
2294         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
2295         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
2296 }
2297
2298 static void
2299 clear_caches (EvView *view)
2300 {
2301         if (view->pixbuf_cache) {
2302                 g_object_unref (view->pixbuf_cache);
2303                 view->pixbuf_cache = NULL;
2304         }
2305
2306         if (view->page_cache) {
2307                 view->page_cache = NULL;
2308         }
2309 }
2310
2311 void
2312 ev_view_set_document (EvView     *view,
2313                       EvDocument *document)
2314 {
2315         g_return_if_fail (EV_IS_VIEW (view));
2316
2317         if (document != view->document) {
2318                 clear_caches (view);
2319
2320                 if (view->document) {
2321                         g_signal_handlers_disconnect_by_func (view->document,
2322                                                               find_changed_cb,
2323                                                               view);
2324                         g_object_unref (view->document);
2325                         view->page_cache = NULL;
2326
2327                 }
2328
2329                 view->document = document;
2330                 view->find_page = 0;
2331                 view->find_result = 0;
2332
2333                 if (view->document) {
2334                         g_object_ref (view->document);
2335                         if (EV_IS_DOCUMENT_FIND (view->document)) {
2336                                 g_signal_connect (view->document,
2337                                                   "find_changed",
2338                                                   G_CALLBACK (find_changed_cb),
2339                                                   view);
2340                         }
2341
2342                         setup_caches (view);
2343                 }
2344
2345                 gtk_widget_queue_resize (GTK_WIDGET (view));
2346         }
2347 }
2348
2349 /*** Zoom and sizing mode ***/
2350
2351 #define EPSILON 0.0000001
2352 void
2353 ev_view_set_zoom (EvView   *view,
2354                   double    factor,
2355                   gboolean  relative)
2356 {
2357         double scale;
2358
2359         if (relative)
2360                 scale = view->scale * factor;
2361         else
2362                 scale = factor;
2363
2364         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
2365
2366         if (ABS (view->scale - scale) < EPSILON)
2367                 return;
2368
2369         view->scale = scale;
2370         view->pending_resize = TRUE;
2371
2372         gtk_widget_queue_resize (GTK_WIDGET (view));
2373
2374         g_object_notify (G_OBJECT (view), "zoom");
2375 }
2376
2377 double
2378 ev_view_get_zoom (EvView *view)
2379 {
2380         return view->scale;
2381 }
2382
2383 gboolean
2384 ev_view_get_continuous (EvView *view)
2385 {
2386         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2387
2388         return view->continuous;
2389 }
2390
2391 void
2392 ev_view_set_continuous (EvView   *view,
2393                         gboolean  continuous)
2394 {
2395         g_return_if_fail (EV_IS_VIEW (view));
2396
2397         continuous = continuous != FALSE;
2398
2399         if (view->continuous != continuous) {
2400                 view->continuous = continuous;
2401                 view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2402                 gtk_widget_queue_resize (GTK_WIDGET (view));
2403         }
2404
2405         g_object_notify (G_OBJECT (view), "continuous");
2406 }
2407
2408 gboolean
2409 ev_view_get_dual_page (EvView *view)
2410 {
2411         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2412
2413         return view->dual_page;
2414 }
2415
2416 void
2417 ev_view_set_dual_page (EvView   *view,
2418                        gboolean  dual_page)
2419 {
2420         g_return_if_fail (EV_IS_VIEW (view));
2421
2422         dual_page = dual_page != FALSE;
2423
2424         if (view->dual_page == dual_page)
2425                 return;
2426
2427         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2428         view->dual_page = dual_page;
2429         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
2430          * preload_cache_size to be 2 if dual_page is set.
2431          */
2432         gtk_widget_queue_resize (GTK_WIDGET (view));
2433
2434         g_object_notify (G_OBJECT (view), "dual-page");
2435 }
2436
2437 void
2438 ev_view_set_fullscreen (EvView   *view,
2439                          gboolean  fullscreen)
2440 {
2441         g_return_if_fail (EV_IS_VIEW (view));
2442
2443         fullscreen = fullscreen != FALSE;
2444
2445         if (view->fullscreen == fullscreen)
2446                 return;
2447
2448         view->fullscreen = fullscreen;
2449         gtk_widget_queue_resize (GTK_WIDGET (view));
2450
2451         g_object_notify (G_OBJECT (view), "fullscreen");
2452 }
2453
2454 gboolean
2455 ev_view_get_fullscreen (EvView *view)
2456 {
2457         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2458
2459         return view->fullscreen;
2460 }
2461
2462 void
2463 ev_view_set_presentation (EvView   *view,
2464                           gboolean  presentation)
2465 {
2466         g_return_if_fail (EV_IS_VIEW (view));
2467
2468         presentation = presentation != FALSE;
2469
2470         if (view->presentation == presentation)
2471                 return;
2472
2473         view->presentation = presentation;
2474         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2475         gtk_widget_queue_resize (GTK_WIDGET (view));
2476
2477         if (GTK_WIDGET_REALIZED (view)) {
2478                 if (view->presentation)
2479                         gdk_window_set_background (GTK_WIDGET(view)->window,
2480                                                    &GTK_WIDGET (view)->style->black);
2481                 else
2482                         gdk_window_set_background (GTK_WIDGET(view)->window,
2483                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
2484         }
2485
2486
2487         g_object_notify (G_OBJECT (view), "presentation");
2488 }
2489
2490 gboolean
2491 ev_view_get_presentation (EvView *view)
2492 {
2493         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2494
2495         return view->presentation;
2496 }
2497
2498 void
2499 ev_view_set_sizing_mode (EvView       *view,
2500                          EvSizingMode  sizing_mode)
2501 {
2502         g_return_if_fail (EV_IS_VIEW (view));
2503
2504         if (view->sizing_mode == sizing_mode)
2505                 return;
2506
2507         view->sizing_mode = sizing_mode;
2508         gtk_widget_queue_resize (GTK_WIDGET (view));
2509
2510         g_object_notify (G_OBJECT (view), "sizing-mode");
2511 }
2512
2513 EvSizingMode
2514 ev_view_get_sizing_mode (EvView *view)
2515 {
2516         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
2517
2518         return view->sizing_mode;
2519 }
2520
2521 gboolean
2522 ev_view_can_zoom_in (EvView *view)
2523 {
2524         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
2525 }
2526
2527 gboolean
2528 ev_view_can_zoom_out (EvView *view)
2529 {
2530         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
2531 }
2532
2533 void
2534 ev_view_zoom_in (EvView *view)
2535 {
2536         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2537
2538         view->pending_scroll = SCROLL_TO_CENTER;
2539         ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE);
2540 }
2541
2542 void
2543 ev_view_zoom_out (EvView *view)
2544 {
2545         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2546
2547         view->pending_scroll = SCROLL_TO_CENTER;
2548         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
2549 }
2550
2551 void
2552 ev_view_rotate_right (EvView *view)
2553 {
2554         int rotation = view->rotation + 90;
2555
2556         if (rotation >= 360) {
2557                 rotation -= 360;
2558         }
2559
2560         ev_view_set_rotation (view, rotation);
2561 }
2562
2563 void
2564 ev_view_rotate_left (EvView *view)
2565 {
2566         int rotation = view->rotation - 90;
2567
2568         if (rotation < 0) {
2569                 rotation += 360;
2570         }
2571
2572         ev_view_set_rotation (view, rotation);
2573 }
2574
2575 void
2576 ev_view_set_rotation (EvView *view, int rotation)
2577 {
2578         view->rotation = rotation;
2579
2580         if (view->pixbuf_cache) {
2581                 ev_pixbuf_cache_clear (view->pixbuf_cache);
2582                 gtk_widget_queue_resize (GTK_WIDGET (view));
2583         }
2584
2585         if (rotation != 0)
2586                 clear_selection (view);
2587
2588         g_object_notify (G_OBJECT (view), "rotation");
2589 }
2590
2591 int
2592 ev_view_get_rotation (EvView *view)
2593 {
2594         return view->rotation;
2595 }
2596
2597 static double
2598 zoom_for_size_fit_width (int doc_width,
2599                          int doc_height,
2600                          int target_width,
2601                          int target_height,
2602                          int vsb_width)
2603 {
2604         double scale;
2605
2606         scale = (double)target_width / doc_width;
2607
2608         if (doc_height * scale > target_height)
2609                 scale = (double) (target_width - vsb_width) / doc_width;
2610
2611         return scale;
2612 }
2613
2614 static double
2615 zoom_for_size_best_fit (int doc_width,
2616                         int doc_height,
2617                         int target_width,
2618                         int target_height,
2619                         int vsb_width,
2620                         int hsb_width)
2621 {
2622         double w_scale;
2623         double h_scale;
2624
2625         w_scale = (double)target_width / doc_width;
2626         h_scale = (double)target_height / doc_height;
2627
2628         if (doc_height * w_scale > target_height)
2629                 w_scale = (double) (target_width - vsb_width) / doc_width;
2630         if (doc_width * h_scale > target_width)
2631                 h_scale = (double) (target_height - hsb_width) / doc_height;
2632
2633         return MIN (w_scale, h_scale);
2634 }
2635
2636
2637 static void
2638 ev_view_zoom_for_size_presentation (EvView *view,
2639                                     int     width,
2640                                     int     height)
2641 {
2642         int doc_width, doc_height;
2643         gdouble scale;
2644
2645         ev_page_cache_get_size (view->page_cache,
2646                                 view->current_page,
2647                                 view->rotation,
2648                                 1.0,
2649                                 &doc_width,
2650                                 &doc_height);
2651         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
2652         ev_view_set_zoom (view, scale, FALSE);
2653 }
2654
2655 static void
2656 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
2657                            int     width,
2658                            int     height,
2659                            int     vsb_width,
2660                            int     hsb_height)
2661 {
2662         int doc_width, doc_height;
2663         GtkBorder border;
2664         gdouble scale;
2665
2666         ev_page_cache_get_max_width (view->page_cache,
2667                                      view->rotation,
2668                                      1.0,
2669                                      &doc_width);
2670         ev_page_cache_get_max_height (view->page_cache,
2671                                       view->rotation,
2672                                       1.0,
2673                                       &doc_height);
2674         compute_border (view, doc_width, doc_height, &border);
2675
2676         doc_width = doc_width * 2;
2677         width -= (2 * (border.left + border.right) + 3 * view->spacing);
2678         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2679
2680         /* FIXME: We really need to calculate the overall height here, not the
2681          * page height.  We assume there's always a vertical scrollbar for
2682          * now.  We need to fix this. */
2683         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2684                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2685         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2686                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2687         else
2688                 g_assert_not_reached ();
2689
2690         ev_view_set_zoom (view, scale, FALSE);
2691 }
2692
2693 static void
2694 ev_view_zoom_for_size_continuous (EvView *view,
2695                                   int     width,
2696                                   int     height,
2697                                   int     vsb_width,
2698                                   int     hsb_height)
2699 {
2700         int doc_width, doc_height;
2701         GtkBorder border;
2702         gdouble scale;
2703
2704         ev_page_cache_get_max_width (view->page_cache,
2705                                      view->rotation,
2706                                      1.0,
2707                                      &doc_width);
2708         ev_page_cache_get_max_height (view->page_cache,
2709                                       view->rotation,
2710                                       1.0,
2711                                       &doc_height);
2712         compute_border (view, doc_width, doc_height, &border);
2713
2714         width -= (border.left + border.right + 2 * view->spacing);
2715         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2716
2717         /* FIXME: We really need to calculate the overall height here, not the
2718          * page height.  We assume there's always a vertical scrollbar for
2719          * now.  We need to fix this. */
2720         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2721                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2722         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2723                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2724         else
2725                 g_assert_not_reached ();
2726
2727         ev_view_set_zoom (view, scale, FALSE);
2728 }
2729
2730 static void
2731 ev_view_zoom_for_size_dual_page (EvView *view,
2732                                  int     width,
2733                                  int     height,
2734                                  int     vsb_width,
2735                                  int     hsb_height)
2736 {
2737         GtkBorder border;
2738         gint doc_width, doc_height;
2739         gdouble scale;
2740         gint other_page;
2741
2742         other_page = view->current_page ^ 1;
2743
2744         /* Find the largest of the two. */
2745         ev_page_cache_get_size (view->page_cache,
2746                                 view->current_page,
2747                                 view->rotation,
2748                                 1.0,
2749                                 &doc_width, &doc_height);
2750
2751         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
2752                 gint width_2, height_2;
2753                 ev_page_cache_get_size (view->page_cache,
2754                                         other_page,
2755                                         view->rotation,
2756                                         1.0,
2757                                         &width_2, &height_2);
2758                 if (width_2 > doc_width)
2759                         doc_width = width_2;
2760                 if (height_2 > doc_height)
2761                         doc_height = height_2;
2762         }
2763         compute_border (view, doc_width, doc_height, &border);
2764
2765         doc_width = doc_width * 2;
2766         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
2767         height -= (border.top + border.bottom + 2 * view->spacing);
2768
2769         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2770                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
2771         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2772                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
2773         else
2774                 g_assert_not_reached ();
2775
2776         ev_view_set_zoom (view, scale, FALSE);
2777 }
2778
2779 static void
2780 ev_view_zoom_for_size_single_page (EvView *view,
2781                                    int     width,
2782                                    int     height,
2783                                    int     vsb_width,
2784                                    int     hsb_height)
2785 {
2786         int doc_width, doc_height;
2787         GtkBorder border;
2788         gdouble scale;
2789
2790         ev_page_cache_get_size (view->page_cache,
2791                                 view->current_page,
2792                                 view->rotation,
2793                                 1.0,
2794                                 &doc_width,
2795                                 &doc_height);
2796         /* Get an approximate border */
2797         compute_border (view, width, height, &border);
2798
2799         width -= (border.left + border.right + 2 * view->spacing);
2800         height -= (border.top + border.bottom + 2 * view->spacing);
2801
2802         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2803                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
2804         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2805                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
2806         else
2807                 g_assert_not_reached ();
2808
2809         ev_view_set_zoom (view, scale, FALSE);
2810 }
2811
2812 void
2813 ev_view_set_zoom_for_size (EvView *view,
2814                            int     width,
2815                            int     height,
2816                            int     vsb_width,
2817                            int     hsb_height)
2818 {
2819         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2820                           view->sizing_mode == EV_SIZING_BEST_FIT);
2821         g_return_if_fail (width >= 0);
2822         g_return_if_fail (height >= 0);
2823
2824         if (view->document == NULL)
2825                 return;
2826
2827         if (view->presentation)
2828                 ev_view_zoom_for_size_presentation (view, width, height);
2829         else if (view->continuous && view->dual_page)
2830                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
2831         else if (view->continuous)
2832                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
2833         else if (view->dual_page)
2834                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
2835         else
2836                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
2837 }
2838
2839 /*** Status text messages ***/
2840
2841 const char *
2842 ev_view_get_status (EvView *view)
2843 {
2844         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
2845
2846         return view->status;
2847 }
2848
2849 static void
2850 ev_view_set_status (EvView *view, const char *message)
2851 {
2852         g_return_if_fail (EV_IS_VIEW (view));
2853
2854         if (message != view->status) {
2855                 g_free (view->status);
2856                 view->status = g_strdup (message);
2857                 g_object_notify (G_OBJECT (view), "status");
2858         }
2859 }
2860
2861 static void
2862 update_find_status_message (EvView *view)
2863 {
2864         char *message;
2865
2866         if (view->current_page == view->find_page) {
2867                 int results;
2868
2869                 results = ev_document_find_get_n_results
2870                                 (EV_DOCUMENT_FIND (view->document),
2871                                  view->current_page);
2872                 /* TRANS: Sometimes this could be better translated as
2873                    "%d hit(s) on this page".  Therefore this string
2874                    contains plural cases. */
2875                 message = g_strdup_printf (ngettext ("%d found on this page",
2876                                                      "%d found on this page",
2877                                                      results),
2878                                            results);
2879         } else {
2880                 double percent;
2881
2882                 percent = ev_document_find_get_progress
2883                                 (EV_DOCUMENT_FIND (view->document));
2884                 if (percent >= (1.0 - 1e-10)) {
2885                         message = g_strdup (_("Not found"));
2886                 } else {
2887                         message = g_strdup_printf (_("%3d%% remaining to search"),
2888                                                    (int) ((1.0 - percent) * 100));
2889                 }
2890
2891         }
2892         ev_view_set_find_status (view, message);
2893         g_free (message);
2894 }
2895
2896 const char *
2897 ev_view_get_find_status (EvView *view)
2898 {
2899         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
2900
2901         return view->find_status;
2902 }
2903
2904 static void
2905 ev_view_set_find_status (EvView *view, const char *message)
2906 {
2907         g_return_if_fail (EV_IS_VIEW (view));
2908
2909         g_free (view->find_status);
2910         view->find_status = g_strdup (message);
2911         g_object_notify (G_OBJECT (view), "find-status");
2912 }
2913
2914 /*** Find ***/
2915
2916 static void
2917 jump_to_find_result (EvView *view)
2918 {
2919         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2920         EvRectangle rect;
2921         GdkRectangle view_rect;
2922         int n_results;
2923         int page = view->find_page;
2924
2925         n_results = ev_document_find_get_n_results (find, page);
2926
2927         if (n_results > 0  && view->find_result < n_results) {
2928                 ev_document_find_get_result
2929                         (find, page, view->find_result, &rect);
2930
2931                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
2932                 ensure_rectangle_is_visible (view, &view_rect);
2933         }
2934 }
2935
2936 static void
2937 jump_to_find_page (EvView *view, EvViewFindDirection direction)
2938 {
2939         int n_pages, i;
2940
2941         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2942
2943         for (i = 0; i < n_pages; i++) {
2944                 int has_results;
2945                 int page;
2946
2947                 if (direction == EV_VIEW_FIND_NEXT)
2948                         page = view->find_page + i;
2949                 else
2950                         page = view->find_page - i;
2951
2952
2953                 if (page >= n_pages) {
2954                         page = page - n_pages;
2955                 }
2956                 if (page < 0)
2957                         page = page + n_pages;
2958
2959                 has_results = ev_document_find_page_has_results
2960                                 (EV_DOCUMENT_FIND (view->document), page);
2961                 if (has_results == -1) {
2962                         view->find_page = page;
2963                         break;
2964                 } else if (has_results == 1) {
2965                         ev_page_cache_set_current_page (view->page_cache, page);
2966                         break;
2967                 }
2968         }
2969 }
2970
2971 gboolean
2972 ev_view_can_find_next (EvView *view)
2973 {
2974         int n_results = 0;
2975
2976         if (EV_IS_DOCUMENT_FIND (view->document)) {
2977                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2978
2979                 n_results = ev_document_find_get_n_results (find, view->current_page);
2980         }
2981
2982         return n_results > 0;
2983 }
2984
2985 void
2986 ev_view_find_next (EvView *view)
2987 {
2988         int n_results, n_pages;
2989         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2990
2991         n_results = ev_document_find_get_n_results (find, view->current_page);
2992
2993         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2994
2995         view->find_result++;
2996
2997         if (view->find_result >= n_results) {
2998
2999                 view->find_result = 0;
3000                 view->find_page++;
3001                 if (view->find_page >= n_pages) {
3002                         view->find_page = 0;
3003                 }
3004
3005                 jump_to_find_page (view, EV_VIEW_FIND_NEXT);
3006                 jump_to_find_result (view);
3007         } else {
3008                 jump_to_find_result (view);
3009                 gtk_widget_queue_draw (GTK_WIDGET (view));
3010         }
3011 }
3012
3013 void
3014 ev_view_find_previous (EvView *view)
3015 {
3016         int n_results, n_pages;
3017         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3018         EvPageCache *page_cache;
3019
3020         page_cache = ev_page_cache_get (view->document);
3021
3022         n_results = ev_document_find_get_n_results (find, view->current_page);
3023
3024         n_pages = ev_page_cache_get_n_pages (page_cache);
3025
3026         view->find_result--;
3027
3028         if (view->find_result < 0) {
3029
3030                 view->find_page--;
3031                 if (view->find_page < 0) {
3032                         view->find_page = n_pages - 1;
3033                 }
3034
3035                 jump_to_find_page (view, EV_VIEW_FIND_PREV);
3036                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
3037                 jump_to_find_result (view);
3038         } else {
3039                 jump_to_find_result (view);
3040                 gtk_widget_queue_draw (GTK_WIDGET (view));
3041         }
3042 }
3043
3044 /*** Selections ***/
3045
3046 /* compute_new_selection_rect/text calculates the area currently selected by
3047  * view_rect.  each handles a different mode;
3048  */
3049 static GList *
3050 compute_new_selection_rect (EvView       *view,
3051                             GdkPoint     *start,
3052                             GdkPoint     *stop)
3053 {
3054         GdkRectangle view_rect;
3055         int n_pages, i;
3056         GList *list = NULL;
3057
3058         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
3059
3060         view_rect.x = MIN (start->x, stop->x);
3061         view_rect.y = MIN (start->y, stop->y);
3062         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
3063         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
3064
3065         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3066
3067         for (i = 0; i < n_pages; i++) {
3068                 GdkRectangle page_area;
3069                 GtkBorder border;
3070
3071                 if (get_page_extents (view, i, &page_area, &border)) {
3072                         GdkRectangle overlap;
3073
3074                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
3075                                 EvViewSelection *selection;
3076
3077                                 selection = g_new0 (EvViewSelection, 1);
3078                                 selection->page = i;
3079                                 view_rect_to_doc_rect (view, &overlap, &page_area,
3080                                                        &(selection->rect));
3081
3082                                 list = g_list_append (list, selection);
3083                         }
3084                 }
3085         }
3086
3087         return list;
3088 }
3089
3090 static gboolean
3091 gdk_rectangle_point_in (GdkRectangle *rectangle,
3092                         GdkPoint     *point)
3093 {
3094         return rectangle->x <= point->x &&
3095                 rectangle->y <= point->y &&
3096                 point->x < rectangle->x + rectangle->width &&
3097                 point->y < rectangle->y + rectangle->height;
3098 }
3099
3100 static GList *
3101 compute_new_selection_text (EvView   *view,
3102                             GdkPoint *start,
3103                             GdkPoint *stop)
3104 {
3105         int n_pages, i, first, last;
3106         GList *list = NULL;
3107         EvViewSelection *selection;
3108         gint width, height;
3109         int start_page, end_page;
3110
3111         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
3112
3113         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3114
3115         /* First figure out the range of pages the selection
3116          * affects. */
3117         first = n_pages;
3118         last = 0;
3119         if (view->continuous) {
3120                 start_page = 0;
3121                 end_page = n_pages;
3122         } else if (view->dual_page) {
3123                 start_page = view->start_page;
3124                 end_page = view->end_page + 1;
3125         } else {
3126                 start_page = view->current_page;
3127                 end_page = view->current_page + 1;
3128         }
3129
3130         for (i = start_page; i < end_page; i++) {
3131                 GdkRectangle page_area;
3132                 GtkBorder border;
3133
3134                 get_page_extents (view, i, &page_area, &border);
3135                 if (gdk_rectangle_point_in (&page_area, start) ||
3136                     gdk_rectangle_point_in (&page_area, stop)) {
3137                         if (first == n_pages)
3138                                 first = i;
3139                         last = i;
3140                 }
3141
3142         }
3143
3144
3145
3146         /* Now create a list of EvViewSelection's for the affected
3147          * pages.  This could be an empty list, a list of just one
3148          * page or a number of pages.*/
3149         for (i = first; i < last + 1; i++) {
3150                 GdkRectangle page_area;
3151                 GtkBorder border;
3152                 GdkPoint *point;
3153
3154                 ev_page_cache_get_size (view->page_cache, i,
3155                                         view->rotation,
3156                                         1.0, &width, &height);
3157
3158                 selection = g_new0 (EvViewSelection, 1);
3159                 selection->page = i;
3160                 selection->rect.x1 = selection->rect.y1 = 0;
3161                 selection->rect.x2 = width;
3162                 selection->rect.y2 = height;
3163
3164                 get_page_extents (view, i, &page_area, &border);
3165
3166                 if (gdk_rectangle_point_in (&page_area, start))
3167                         point = start;
3168                 else
3169                         point = stop;
3170
3171                 if (i == first)
3172                         view_point_to_doc_point (view, point, &page_area,
3173                                                  &selection->rect.x1,
3174                                                  &selection->rect.y1);
3175
3176                 /* If the selection is contained within just one page,
3177                  * make sure we don't write 'start' into both points
3178                  * in selection->rect. */
3179                 if (first == last)
3180                         point = stop;
3181
3182                 if (i == last)
3183                         view_point_to_doc_point (view, point, &page_area,
3184                                                  &selection->rect.x2,
3185                                                  &selection->rect.y2);
3186
3187                 list = g_list_append (list, selection);
3188         }
3189
3190         return list;
3191 }
3192
3193 /* This function takes the newly calculated list, and figures out which regions
3194  * have changed.  It then queues a redraw approporiately.
3195  */
3196 static void
3197 merge_selection_region (EvView *view,
3198                         GList  *new_list)
3199 {
3200         GList *old_list;
3201         GList *new_list_ptr, *old_list_ptr;
3202
3203         /* Update the selection */
3204         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
3205         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3206         view->selection_info.selections = new_list;
3207         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
3208
3209         new_list_ptr = new_list;
3210         old_list_ptr = old_list;
3211
3212         while (new_list_ptr || old_list_ptr) {
3213                 EvViewSelection *old_sel, *new_sel;
3214                 int cur_page;
3215                 GdkRegion *region = NULL;
3216
3217                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
3218                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
3219
3220                 /* Assume that the lists are in order, and we run through them
3221                  * comparing them, one page at a time.  We come out with the
3222                  * first page we see. */
3223                 if (new_sel && old_sel) {
3224                         if (new_sel->page < old_sel->page) {
3225                                 new_list_ptr = new_list_ptr->next;
3226                                 old_sel = NULL;
3227                         } else if (new_sel->page > old_sel->page) {
3228                                 old_list_ptr = old_list_ptr->next;
3229                                 new_sel = NULL;
3230                         } else {
3231                                 new_list_ptr = new_list_ptr->next;
3232                                 old_list_ptr = old_list_ptr->next;
3233                         }
3234                 } else if (new_sel) {
3235                         new_list_ptr = new_list_ptr->next;
3236                 } else if (old_sel) {
3237                         old_list_ptr = old_list_ptr->next;
3238                 }
3239
3240                 g_assert (new_sel || old_sel);
3241
3242                 /* is the page we're looking at on the screen?*/
3243                 cur_page = new_sel ? new_sel->page : old_sel->page;
3244                 if (cur_page < view->start_page || cur_page > view->end_page)
3245                         continue;
3246
3247                 /* seed the cache with a new page.  We are going to need the new
3248                  * region too. */
3249                 if (new_sel) {
3250                         GdkRegion *tmp_region = NULL;
3251                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
3252                                                               cur_page,
3253                                                               view->scale,
3254                                                               &tmp_region);
3255                         if (tmp_region) {
3256                                 new_sel->covered_region = gdk_region_copy (tmp_region);
3257                         }
3258                 }
3259
3260                 /* Now we figure out what needs redrawing */
3261                 if (old_sel && new_sel) {
3262                         if (old_sel->covered_region &&
3263                             new_sel->covered_region) {
3264                                 /* We only want to redraw the areas that have
3265                                  * changed, so we xor the old and new regions
3266                                  * and redraw if it's different */
3267                                 region = gdk_region_copy (old_sel->covered_region);
3268                                 gdk_region_xor (region, new_sel->covered_region);
3269                                 if (gdk_region_empty (region)) {
3270                                         gdk_region_destroy (region);
3271                                         region = NULL;
3272                                 }
3273                         } else if (old_sel->covered_region) {
3274                                 region = gdk_region_copy (old_sel->covered_region);
3275                         } else if (new_sel->covered_region) {
3276                                 region = gdk_region_copy (new_sel->covered_region);
3277                         }
3278                 } else if (old_sel && !new_sel) {
3279                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
3280                                 region = gdk_region_copy (old_sel->covered_region);
3281                         }
3282                 } else if (!old_sel && new_sel) {
3283                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
3284                                 region = gdk_region_copy (new_sel->covered_region);
3285                         }
3286                 } else {
3287                         g_assert_not_reached ();
3288                 }
3289
3290                 /* Redraw the damaged region! */
3291                 if (region) {
3292                         GdkRectangle page_area;
3293                         GtkBorder border;
3294
3295                         get_page_extents (view, cur_page, &page_area, &border);
3296                         gdk_region_offset (region,
3297                                            page_area.x + border.left - view->scroll_x,
3298                                            page_area.y + border.top - view->scroll_y);
3299                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
3300                         gdk_region_destroy (region);
3301                 }
3302         }
3303
3304         /* Free the old list, now that we're done with it. */
3305         g_list_foreach (old_list, (GFunc) selection_free, NULL);
3306 }
3307
3308 static void
3309 compute_selections (EvView   *view,
3310                     GdkPoint *start,
3311                     GdkPoint *stop)
3312 {
3313         GList *list;
3314
3315         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
3316                 list = compute_new_selection_rect (view, start, stop);
3317         else
3318                 list = compute_new_selection_text (view, start, stop);
3319         merge_selection_region (view, list);
3320 }
3321
3322 /* Free's the selection.  It's up to the caller to queue redraws if needed.
3323  */
3324 static void
3325 selection_free (EvViewSelection *selection)
3326 {
3327         if (selection->covered_region)
3328                 gdk_region_destroy (selection->covered_region);
3329         g_free (selection);
3330 }
3331
3332 static void
3333 clear_selection (EvView *view)
3334 {
3335         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3336         view->selection_info.selections = NULL;
3337         view->selection_info.in_selection = FALSE;
3338 }
3339
3340
3341 void
3342 ev_view_select_all (EvView *view)
3343 {
3344         int n_pages, i;
3345
3346         /* Disable selection on rotated pages for the 0.4.0 series */
3347         if (view->rotation != 0)
3348                 return;
3349
3350         clear_selection (view);
3351
3352         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3353         for (i = 0; i < n_pages; i++) {
3354                 int width, height;
3355                 EvViewSelection *selection;
3356
3357                 ev_page_cache_get_size (view->page_cache,
3358                                         i,
3359                                         view->rotation,
3360                                         1.0, &width, &height);
3361
3362                 selection = g_new0 (EvViewSelection, 1);
3363                 selection->page = i;
3364                 selection->rect.x1 = selection->rect.y1 = 0;
3365                 selection->rect.x2 = width;
3366                 selection->rect.y2 = height;
3367
3368                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
3369         }
3370
3371         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
3372         gtk_widget_queue_draw (GTK_WIDGET (view));
3373 }
3374
3375 static char *
3376 get_selected_text (EvView *ev_view)
3377 {
3378         GString *text;
3379         GList *l;
3380
3381         text = g_string_new (NULL);
3382
3383         ev_document_doc_mutex_lock ();
3384
3385         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
3386                 EvViewSelection *selection = (EvViewSelection *)l->data;
3387                 char *tmp;
3388
3389                 tmp = ev_document_get_text (ev_view->document,
3390                                             selection->page,
3391                                             &selection->rect);
3392                 g_string_append (text, tmp);
3393                 g_free (tmp);
3394         }
3395
3396         ev_document_doc_mutex_unlock ();
3397
3398         return g_string_free (text, FALSE);
3399 }
3400
3401 void
3402 ev_view_copy (EvView *ev_view)
3403 {
3404         GtkClipboard *clipboard;
3405         char *text;
3406
3407         if (!ev_document_can_get_text (ev_view->document)) {
3408                 return;
3409         }
3410
3411         text = get_selected_text (ev_view);
3412         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3413                                               GDK_SELECTION_CLIPBOARD);
3414         gtk_clipboard_set_text (clipboard, text, -1);
3415         g_free (text);
3416 }
3417
3418 static void
3419 ev_view_primary_get_cb (GtkClipboard     *clipboard,
3420                         GtkSelectionData *selection_data,
3421                         guint             info,
3422                         gpointer          data)
3423 {
3424         EvView *ev_view = EV_VIEW (data);
3425         char *text;
3426
3427         if (!ev_document_can_get_text (ev_view->document)) {
3428                 return;
3429         }
3430
3431         text = get_selected_text (ev_view);
3432         gtk_selection_data_set_text (selection_data, text, -1);
3433         g_free (text);
3434 }
3435
3436 static void
3437 ev_view_primary_clear_cb (GtkClipboard *clipboard,
3438                           gpointer      data)
3439 {
3440         EvView *view = EV_VIEW (data);
3441
3442         clear_selection (view);
3443 }
3444
3445 static void
3446 ev_view_update_primary_selection (EvView *ev_view)
3447 {
3448         GtkClipboard *clipboard;
3449
3450         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3451                                               GDK_SELECTION_PRIMARY);
3452
3453         if (ev_view->selection_info.selections) {
3454                 if (!gtk_clipboard_set_with_owner (clipboard,
3455                                                    targets,
3456                                                    G_N_ELEMENTS (targets),
3457                                                    ev_view_primary_get_cb,
3458                                                    ev_view_primary_clear_cb,
3459                                                    G_OBJECT (ev_view)))
3460                         ev_view_primary_clear_cb (clipboard, ev_view);
3461         } else {
3462                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
3463                         gtk_clipboard_clear (clipboard);
3464         }
3465 }
3466
3467 /*** Cursor operations ***/
3468
3469 static GdkCursor *
3470 ev_view_create_invisible_cursor(void)
3471 {
3472        GdkBitmap *empty;
3473        GdkColor black = { 0, 0, 0, 0 };
3474        static char bits[] = { 0x00 };
3475
3476        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
3477
3478        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
3479 }
3480
3481 static void
3482 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
3483 {
3484         GdkCursor *cursor = NULL;
3485         GdkDisplay *display;
3486         GtkWidget *widget;
3487
3488         if (view->cursor == new_cursor) {
3489                 return;
3490         }
3491
3492         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
3493         display = gtk_widget_get_display (widget);
3494         view->cursor = new_cursor;
3495
3496         switch (new_cursor) {
3497                 case EV_VIEW_CURSOR_NORMAL:
3498                         gdk_window_set_cursor (widget->window, NULL);
3499                         break;
3500                 case EV_VIEW_CURSOR_IBEAM:
3501                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
3502                         break;
3503                 case EV_VIEW_CURSOR_LINK:
3504                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
3505                         break;
3506                 case EV_VIEW_CURSOR_WAIT:
3507                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
3508                         break;
3509                 case EV_VIEW_CURSOR_HIDDEN:
3510                         cursor = ev_view_create_invisible_cursor ();
3511                         break;
3512                 case EV_VIEW_CURSOR_DRAG:
3513                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
3514                         break;
3515         }
3516
3517         if (cursor) {
3518                 gdk_window_set_cursor (widget->window, cursor);
3519                 gdk_cursor_unref (cursor);
3520                 gdk_flush();
3521         }
3522 }
3523
3524 void
3525 ev_view_hide_cursor (EvView *view)
3526 {
3527        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
3528 }
3529
3530 void
3531 ev_view_show_cursor (EvView *view)
3532 {
3533        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3534 }
3535
3536 /*** Enum description for usage in signal ***/
3537
3538 GType
3539 ev_sizing_mode_get_type (void)
3540 {
3541   static GType etype = 0;
3542   if (etype == 0) {
3543     static const GEnumValue values[] = {
3544       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
3545       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
3546       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
3547       { 0, NULL, NULL }
3548     };
3549     etype = g_enum_register_static ("EvSizingMode", values);
3550   }
3551   return etype;
3552 }
3553