shell/ev-view.c

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