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 goto_xyz_link (EvView *view, EvLink *link)
1095 {
1096         GdkPoint view_point;
1097         EvPoint doc_point;
1098         int height, page;
1099         double zoom;
1100
1101         zoom = ev_link_get_zoom (link);
1102         page = ev_link_get_page (link);
1103         ev_page_cache_get_size (view->page_cache, page, 0, 1.0, NULL, &height);
1104
1105         ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1106         if (zoom != 0) {
1107                 ev_view_set_zoom (view, zoom, FALSE);
1108         }
1109
1110         doc_point.x = ev_link_get_left (link);
1111         doc_point.y = height - ev_link_get_top (link);
1112         doc_point_to_view_point (view, page, &doc_point, &view_point);
1113
1114         gtk_adjustment_set_value (view->hadjustment, view_point.x);
1115         gtk_adjustment_set_value (view->vadjustment, view_point.y);
1116 }
1117
1118 void
1119 ev_view_goto_link (EvView *view, EvLink *link)
1120 {
1121         EvLinkType type;
1122         const char *uri;
1123         int page;
1124
1125         type = ev_link_get_link_type (link);
1126
1127         switch (type) {
1128                 case EV_LINK_TYPE_TITLE:
1129                         break;
1130                 case EV_LINK_TYPE_PAGE:
1131                         page = ev_link_get_page (link);
1132                         ev_page_cache_set_current_page (view->page_cache, page);
1133                         break;
1134                 case EV_LINK_TYPE_PAGE_XYZ:
1135                         goto_xyz_link (view, link);
1136                         break;
1137                 case EV_LINK_TYPE_EXTERNAL_URI:
1138                         uri = ev_link_get_uri (link);
1139                         gnome_vfs_url_show (uri);
1140                         break;
1141         }
1142 }
1143
1144 static char *
1145 tip_from_link (EvView *view, EvLink *link)
1146 {
1147         EvLinkType type;
1148         char *msg = NULL;
1149         char *page_label;
1150
1151         type = ev_link_get_link_type (link);
1152
1153         switch (type) {
1154                 case EV_LINK_TYPE_TITLE:
1155                         if (ev_link_get_title (link))
1156                                 msg = g_strdup (ev_link_get_title (link));
1157                         break;
1158                 case EV_LINK_TYPE_PAGE:
1159                 case EV_LINK_TYPE_PAGE_XYZ:
1160                         page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link));
1161                         msg = g_strdup_printf (_("Go to page %s"), page_label);
1162                         g_free (page_label);
1163                         break;
1164                 case EV_LINK_TYPE_EXTERNAL_URI:
1165                         msg = g_strdup (ev_link_get_uri (link));
1166                         break;
1167                 default:
1168                         break;
1169         }
1170
1171         return msg;
1172 }
1173
1174
1175 /*** GtkWidget implementation ***/
1176
1177 static void
1178 ev_view_size_request_continuous_dual_page (EvView         *view,
1179                                            GtkRequisition *requisition)
1180 {
1181         int max_width;
1182         gint n_pages;
1183         GtkBorder border;
1184
1185         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1186                                      view->scale, &max_width);
1187         compute_border (view, max_width, max_width, &border);
1188
1189         n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1;
1190
1191         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
1192         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1193
1194         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1195                 requisition->width = 1;
1196         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1197                 requisition->width = 1;
1198                 /* FIXME: This could actually be set on one page docs or docs
1199                  * with a strange aspect ratio. */
1200                 /* requisition->height = 1;*/
1201         }
1202 }
1203
1204 static void
1205 ev_view_size_request_continuous (EvView         *view,
1206                                  GtkRequisition *requisition)
1207 {
1208         int max_width;
1209         int n_pages;
1210         GtkBorder border;
1211
1212
1213         ev_page_cache_get_max_width (view->page_cache, view->rotation,
1214                                      view->scale, &max_width);
1215         n_pages = ev_page_cache_get_n_pages (view->page_cache);
1216         compute_border (view, max_width, max_width, &border);
1217
1218         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
1219         get_page_y_offset (view, n_pages, view->scale, &requisition->height);
1220
1221         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1222                 requisition->width = 1;
1223         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1224                 requisition->width = 1;
1225                 /* FIXME: This could actually be set on one page docs or docs
1226                  * with a strange aspect ratio. */
1227                 /* requisition->height = 1;*/
1228         }
1229 }
1230
1231 static void
1232 ev_view_size_request_dual_page (EvView         *view,
1233                                 GtkRequisition *requisition)
1234 {
1235         GtkBorder border;
1236         gint width, height;
1237
1238         /* Find the largest of the two. */
1239         ev_page_cache_get_size (view->page_cache,
1240                                 view->current_page,
1241                                 view->rotation,
1242                                 view->scale,
1243                                 &width, &height);
1244         if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) {
1245                 gint width_2, height_2;
1246                 ev_page_cache_get_size (view->page_cache,
1247                                         view->current_page + 1,
1248                                         view->rotation,
1249                                         view->scale,
1250                                         &width_2, &height_2);
1251                 if (width_2 > width) {
1252                         width = width_2;
1253                         height = height_2;
1254                 }
1255         }
1256         compute_border (view, width, height, &border);
1257
1258         requisition->width = ((width + border.left + border.right) * 2) +
1259                 (view->spacing * 3);
1260         requisition->height = (height + border.top + border.bottom) +
1261                 (view->spacing * 2);
1262
1263         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1264                 requisition->width = 1;
1265         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1266                 requisition->width = 1;
1267                 requisition->height = 1;
1268         }
1269 }
1270
1271 static void
1272 ev_view_size_request_single_page (EvView         *view,
1273                                   GtkRequisition *requisition)
1274 {
1275         GtkBorder border;
1276         gint width, height;
1277
1278         ev_page_cache_get_size (view->page_cache,
1279                                 view->current_page,
1280                                 view->rotation,
1281                                 view->scale,
1282                                 &width, &height);
1283         compute_border (view, width, height, &border);
1284
1285         requisition->width = width + border.left + border.right + (2 * view->spacing);
1286         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1287
1288         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
1289                 requisition->width = 1;
1290                 requisition->height = height + border.top + border.bottom + (2 * view->spacing);
1291         } else if (view->sizing_mode == EV_SIZING_BEST_FIT) {
1292                 requisition->width = 1;
1293                 requisition->height = 1;
1294         }
1295 }
1296
1297 static void
1298 ev_view_size_request (GtkWidget      *widget,
1299                       GtkRequisition *requisition)
1300 {
1301         EvView *view = EV_VIEW (widget);
1302
1303         if (view->document == NULL) {
1304                 requisition->width = 1;
1305                 requisition->height = 1;
1306                 return;
1307         }
1308
1309         if (view->presentation) {
1310                 requisition->width = 1;
1311                 requisition->height = 1;
1312                 return;
1313         }
1314
1315         if (view->continuous && view->dual_page)
1316                 ev_view_size_request_continuous_dual_page (view, requisition);
1317         else if (view->continuous)
1318                 ev_view_size_request_continuous (view, requisition);
1319         else if (view->dual_page)
1320                 ev_view_size_request_dual_page (view, requisition);
1321         else
1322                 ev_view_size_request_single_page (view, requisition);
1323 }
1324
1325 static void
1326 ev_view_size_allocate (GtkWidget      *widget,
1327                        GtkAllocation  *allocation)
1328 {
1329         EvView *view = EV_VIEW (widget);
1330
1331         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
1332                   view->sizing_mode == EV_SIZING_BEST_FIT) {
1333
1334                 g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0);
1335
1336                 ev_view_size_request (widget, &widget->requisition);
1337         }
1338
1339         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
1340         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
1341
1342         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
1343         view->pending_resize = FALSE;
1344
1345         if (view->document)
1346                 view_update_range_and_current_page (view);
1347
1348         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
1349 }
1350
1351 static void
1352 ev_view_realize (GtkWidget *widget)
1353 {
1354         EvView *view = EV_VIEW (widget);
1355         GdkWindowAttr attributes;
1356
1357         GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1358
1359
1360         attributes.window_type = GDK_WINDOW_CHILD;
1361         attributes.wclass = GDK_INPUT_OUTPUT;
1362         attributes.visual = gtk_widget_get_visual (widget);
1363         attributes.colormap = gtk_widget_get_colormap (widget);
1364
1365         attributes.x = widget->allocation.x;
1366         attributes.y = widget->allocation.y;
1367         attributes.width = widget->allocation.width;
1368         attributes.height = widget->allocation.height;
1369         attributes.event_mask = GDK_EXPOSURE_MASK |
1370                                 GDK_BUTTON_PRESS_MASK |
1371                                 GDK_BUTTON_RELEASE_MASK |
1372                                 GDK_SCROLL_MASK |
1373                                 GDK_KEY_PRESS_MASK |
1374                                 GDK_POINTER_MOTION_MASK |
1375                                 GDK_LEAVE_NOTIFY_MASK;
1376
1377         widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1378                                          &attributes,
1379                                          GDK_WA_X | GDK_WA_Y |
1380                                          GDK_WA_COLORMAP |
1381                                          GDK_WA_VISUAL);
1382         gdk_window_set_user_data (widget->window, widget);
1383         widget->style = gtk_style_attach (widget->style, widget->window);
1384
1385         if (view->presentation)
1386                 gdk_window_set_background (widget->window, &widget->style->black);
1387         else
1388                 gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]);
1389 }
1390
1391 static void
1392 ev_view_unrealize (GtkWidget *widget)
1393 {
1394         GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget);
1395 }
1396
1397 static gboolean
1398 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1399 {
1400         EvView *view = EV_VIEW (widget);
1401
1402         if ((event->state & GDK_CONTROL_MASK) != 0) {
1403
1404                  ev_view_set_sizing_mode (view, EV_SIZING_FREE);
1405
1406                  if (event->direction == GDK_SCROLL_UP ||
1407                         event->direction == GDK_SCROLL_LEFT) {
1408                             if (ev_view_can_zoom_in (view)) {
1409                                     ev_view_zoom_in (view);
1410                             }
1411                  } else {
1412                             if (ev_view_can_zoom_out (view)) {
1413                                     ev_view_zoom_out (view);
1414                             }
1415                  }
1416                  return TRUE;
1417         }
1418
1419         if ((event->state & GDK_SHIFT_MASK) != 0) {
1420                 if (event->direction == GDK_SCROLL_UP)
1421                         event->direction = GDK_SCROLL_LEFT;
1422                 if (event->direction == GDK_SCROLL_DOWN)
1423                         event->direction = GDK_SCROLL_RIGHT;
1424         }
1425
1426         return FALSE;
1427 }
1428
1429 static EvViewSelection *
1430 find_selection_for_page (EvView *view,
1431                          gint    page)
1432 {
1433         GList *list;
1434
1435         for (list = view->selection_info.selections; list != NULL; list = list->next) {
1436                 EvViewSelection *selection;
1437
1438                 selection = (EvViewSelection *) list->data;
1439
1440                 if (selection->page == page)
1441                         return selection;
1442         }
1443
1444         return NULL;
1445 }
1446
1447 static gboolean
1448 ev_view_expose_event (GtkWidget      *widget,
1449                       GdkEventExpose *event)
1450 {
1451         EvView *view = EV_VIEW (widget);
1452         int i;
1453
1454         if (view->document == NULL)
1455                 return FALSE;
1456
1457         for (i = view->start_page; i <= view->end_page; i++) {
1458                 GdkRectangle page_area;
1459                 GtkBorder border;
1460
1461                 if (!get_page_extents (view, i, &page_area, &border))
1462                         continue;
1463
1464                 page_area.x -= view->scroll_x;
1465                 page_area.y -= view->scroll_y;
1466
1467                 draw_one_page (view, i, &page_area, &border, &(event->area));
1468
1469                 if (EV_IS_DOCUMENT_FIND (view->document))
1470                         highlight_find_results (view, i);
1471         }
1472
1473         return FALSE;
1474 }
1475
1476 static gboolean
1477 ev_view_button_press_event (GtkWidget      *widget,
1478                             GdkEventButton *event)
1479 {
1480         EvView *view = EV_VIEW (widget);
1481
1482         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
1483                 gtk_widget_grab_focus (widget);
1484         }
1485
1486         view->pressed_button = event->button;
1487
1488         switch (event->button) {
1489                 case 1:
1490                         if (view->selection_info.selections) {
1491                                 clear_selection (view);
1492                                 gtk_widget_queue_draw (widget);
1493                         }
1494
1495                         view->selection_info.start.x = event->x + view->scroll_x;
1496                         view->selection_info.start.y = event->y + view->scroll_y;
1497                         return TRUE;
1498                 case 2:
1499                         /* use root coordinates as reference point because
1500                          * scrolling changes window relative coordinates */
1501                         view->drag_info.start.x = event->x_root;
1502                         view->drag_info.start.y = event->y_root;
1503                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
1504                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
1505
1506                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1507
1508                         return TRUE;
1509         }
1510
1511         return FALSE;
1512 }
1513
1514
1515 static gboolean
1516 selection_update_idle_cb (EvView *view)
1517 {
1518         GdkPoint point;
1519         point.x = view->motion_x;
1520         point.y = view->motion_y;
1521         compute_selections (view, &view->selection_info.start, &point);
1522
1523         view->selection_update_id = 0;
1524         return FALSE;
1525 }
1526
1527 static gboolean
1528 ev_view_motion_notify_event (GtkWidget      *widget,
1529                              GdkEventMotion *event)
1530 {
1531         EvView *view = EV_VIEW (widget);
1532
1533         if (!view->document)
1534                 return FALSE;
1535
1536         /* For the Evince 0.4.x release, we limit selection to un-rotated
1537          * documents only.
1538          */
1539         if (view->pressed_button == 1 &&
1540             view->rotation == 0) {
1541                 view->selection_info.in_selection = TRUE;
1542                 view->motion_x = event->x + view->scroll_x;
1543                 view->motion_y = event->y + view->scroll_y;
1544
1545                 /* Queue an idle to handle the motion.  We do this because
1546                  * handling any selection events in the motion could be slower
1547                  * than new motion events reach us.  We always put it in the
1548                  * idle to make sure we catch up and don't visibly lag the
1549                  * mouse. */
1550                 if (! view->selection_update_id)
1551                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
1552
1553                 return TRUE;
1554         } else if (view->pressed_button == 2) {
1555                 if (!view->drag_info.in_drag) {
1556                         gboolean start;
1557
1558                         start = gtk_drag_check_threshold (widget,
1559                                                           view->drag_info.start.x,
1560                                                           view->drag_info.start.y,
1561                                                           event->x_root,
1562                                                           event->y_root);
1563                         view->drag_info.in_drag = start;
1564                 }
1565
1566                 if (view->drag_info.in_drag) {
1567                         int dx, dy;
1568                         gdouble dhadj_value, dvadj_value;
1569
1570                         dx = event->x_root - view->drag_info.start.x;
1571                         dy = event->y_root - view->drag_info.start.y;
1572
1573                         dhadj_value = view->hadjustment->page_size *
1574                                       (gdouble)dx / widget->allocation.width;
1575                         dvadj_value = view->vadjustment->page_size *
1576                                       (gdouble)dy / widget->allocation.height;
1577
1578                         /* clamp scrolling to visible area */
1579                         gtk_adjustment_set_value (view->hadjustment,
1580                                                   MIN(view->drag_info.hadj - dhadj_value,
1581                                                       view->hadjustment->upper -
1582                                                       view->hadjustment->page_size));
1583                         gtk_adjustment_set_value (view->vadjustment,
1584                                                   MIN(view->drag_info.vadj - dvadj_value,
1585                                                       view->vadjustment->upper -
1586                                                       view->vadjustment->page_size));
1587
1588                         return TRUE;
1589                 }
1590         /* For the Evince 0.4.x release, we limit links to un-rotated documents
1591          * only.
1592          */
1593         } else if (view->pressed_button <= 0 &&
1594                    view->rotation == 0) {
1595                 EvLink *link;
1596
1597                 link = get_link_at_location (view, event->x + view->scroll_x, event->y + view->scroll_y);
1598
1599                 if (view->link_tooltip == NULL) {
1600                         view->link_tooltip = ev_tooltip_new (GTK_WIDGET (view));
1601                 }
1602
1603                 if (view->hovered_link != link) {
1604                         view->hovered_link = link;
1605                         ev_tooltip_deactivate (EV_TOOLTIP (view->link_tooltip));
1606                 }
1607
1608                 if (link) {
1609                         char *msg = tip_from_link (view, link);
1610
1611                         ev_tooltip_set_position (EV_TOOLTIP (view->link_tooltip), event->x, event->y);
1612                         ev_tooltip_set_text (EV_TOOLTIP (view->link_tooltip), msg);
1613                         ev_tooltip_activate (EV_TOOLTIP (view->link_tooltip));
1614                         g_free (msg);
1615
1616                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1617                 } else if (location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y)) {
1618                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1619                 } else {
1620                         ev_view_set_status (view, NULL);
1621                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1622                             view->cursor == EV_VIEW_CURSOR_IBEAM)
1623                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1624                 }
1625                 return TRUE;
1626         }
1627
1628         return FALSE;
1629 }
1630
1631 static gboolean
1632 ev_view_button_release_event (GtkWidget      *widget,
1633                               GdkEventButton *event)
1634 {
1635         EvView *view = EV_VIEW (widget);
1636
1637         if (view->pressed_button == 2) {
1638                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1639         }
1640
1641         view->pressed_button = -1;
1642         view->drag_info.in_drag = FALSE;
1643
1644         if (view->selection_info.selections) {
1645                 ev_view_update_primary_selection (view);
1646         } else if (view->document) {
1647                 EvLink *link;
1648
1649                 link = get_link_at_location (view, event->x + view->scroll_x, event->y + view->scroll_y);
1650                 if (link) {
1651                         ev_view_goto_link (view, link);
1652                 }
1653         }
1654
1655         return FALSE;
1656 }
1657
1658 static gint
1659 ev_view_focus_in (GtkWidget     *widget,
1660                   GdkEventFocus *event)
1661 {
1662         if (EV_VIEW (widget)->pixbuf_cache)
1663                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1664         gtk_widget_queue_draw (widget);
1665
1666         return FALSE;
1667 }
1668
1669 static gint
1670 ev_view_focus_out (GtkWidget     *widget,
1671                      GdkEventFocus *event)
1672 {
1673         if (EV_VIEW (widget)->pixbuf_cache)
1674                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1675         gtk_widget_queue_draw (widget);
1676
1677         return FALSE;
1678 }
1679
1680 static gboolean
1681 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
1682 {
1683         EvView *view = EV_VIEW (widget);
1684
1685         ev_view_set_status (view, NULL);
1686
1687         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1688             view->cursor == EV_VIEW_CURSOR_IBEAM)
1689                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1690
1691         return FALSE;
1692 }
1693
1694 static void
1695 ev_view_style_set (GtkWidget *widget,
1696                    GtkStyle  *old_style)
1697 {
1698         if (EV_VIEW (widget)->pixbuf_cache)
1699                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
1700
1701         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
1702 }
1703
1704
1705 /*** Drawing ***/
1706
1707 static guint32
1708 ev_gdk_color_to_rgb (const GdkColor *color)
1709 {
1710   guint32 result;
1711   result = (0xff0000 | (color->red & 0xff00));
1712   result <<= 8;
1713   result |= ((color->green & 0xff00) | (color->blue >> 8));
1714   return result;
1715 }
1716
1717 static void
1718 draw_rubberband (GtkWidget *widget, GdkWindow *window,
1719                  const GdkRectangle *rect, guchar alpha)
1720 {
1721         GdkGC *gc;
1722         GdkPixbuf *pixbuf;
1723         GdkColor *fill_color_gdk;
1724         guint fill_color;
1725
1726         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
1727         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
1728
1729         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
1730                                  rect->width, rect->height);
1731         gdk_pixbuf_fill (pixbuf, fill_color);
1732
1733         gdk_draw_pixbuf (window, NULL, pixbuf,
1734                          0, 0,
1735                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1736                          rect->width, rect->height,
1737                          GDK_RGB_DITHER_NONE,
1738                          0, 0);
1739
1740         g_object_unref (pixbuf);
1741
1742         gc = gdk_gc_new (window);
1743         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
1744         gdk_draw_rectangle (window, gc, FALSE,
1745                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
1746                             rect->width - 1,
1747                             rect->height - 1);
1748         g_object_unref (gc);
1749
1750         gdk_color_free (fill_color_gdk);
1751 }
1752
1753
1754 static void
1755 highlight_find_results (EvView *view, int page)
1756 {
1757         EvDocumentFind *find;
1758         int i, results = 0;
1759
1760         g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
1761
1762         find = EV_DOCUMENT_FIND (view->document);
1763
1764         results = ev_document_find_get_n_results (find, page);
1765
1766         for (i = 0; i < results; i++) {
1767                 EvRectangle rectangle;
1768                 GdkRectangle view_rectangle;
1769                 guchar alpha;
1770
1771                 if (i == view->find_result && page == view->find_page) {
1772                         alpha = 0x90;
1773                 } else {
1774                         alpha = 0x20;
1775                 }
1776
1777                 ev_document_find_get_result (find, page, i, &rectangle);
1778                 doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle);
1779                 draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window,
1780                                  &view_rectangle, alpha);
1781         }
1782 }
1783
1784 static void
1785 draw_loading_text (EvView       *view,
1786                    GdkRectangle *page_area,
1787                    GdkRectangle *expose_area)
1788 {
1789         PangoLayout *layout;
1790         PangoFontDescription *font_desc;
1791         PangoRectangle logical_rect;
1792         double real_scale;
1793         int target_width;
1794
1795         const char *loading_text = _("Loading...");
1796
1797         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
1798
1799         font_desc = pango_font_description_new ();
1800
1801
1802         /* We set the font to be 10 points, get the size, and scale appropriately */
1803         pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
1804         pango_layout_set_font_description (layout, font_desc);
1805         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
1806
1807         /* Make sure we fit the middle of the page */
1808         target_width = MAX (page_area->width / 2, 1);
1809         real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
1810         pango_font_description_set_size (font_desc, (int)real_scale);
1811         pango_layout_set_font_description (layout, font_desc);
1812         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
1813
1814         gtk_paint_layout (GTK_WIDGET (view)->style,
1815                           GTK_WIDGET (view)->window,
1816                           GTK_WIDGET_STATE (view),
1817                           FALSE,
1818                           page_area,
1819                           GTK_WIDGET (view),
1820                           NULL,
1821                           page_area->x + (target_width/2),
1822                           page_area->y + (page_area->height - logical_rect.height) / 2,
1823                           layout);
1824
1825         pango_font_description_free (font_desc);
1826         g_object_unref (layout);
1827 }
1828
1829 static void
1830 draw_one_page (EvView          *view,
1831                gint             page,
1832                GdkRectangle    *page_area,
1833                GtkBorder       *border,
1834                GdkRectangle    *expose_area)
1835 {
1836         gint width, height;
1837         GdkPixbuf *current_pixbuf;
1838         GdkRectangle overlap;
1839         GdkRectangle real_page_area;
1840         EvViewSelection *selection;
1841
1842         g_assert (view->document);
1843         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
1844                 return;
1845
1846         selection = find_selection_for_page (view, page);
1847         ev_page_cache_get_size (view->page_cache,
1848                                 page, view->rotation,
1849                                 view->scale,
1850                                 &width, &height);
1851         /* Render the document itself */
1852         real_page_area = *page_area;
1853
1854         real_page_area.x += border->left;
1855         real_page_area.y += border->top;
1856         real_page_area.width -= (border->left + border->right);
1857         real_page_area.height -= (border->top + border->bottom);
1858
1859         ev_document_misc_paint_one_page (GTK_WIDGET(view)->window,
1860                                          GTK_WIDGET (view),
1861                                          page_area, border);
1862
1863         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
1864                 GdkPixbuf *selection_pixbuf = NULL;
1865                 GdkPixbuf *scaled_image;
1866                 GdkPixbuf *scaled_selection;
1867
1868                 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page);
1869
1870                 /* Get the selection pixbuf iff we have something to draw */
1871                 if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection)
1872                         selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
1873                                                                                  page,
1874                                                                                  view->scale,
1875                                                                                  NULL);
1876
1877                 if (current_pixbuf == NULL)
1878                         scaled_image = NULL;
1879                 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
1880                          height == gdk_pixbuf_get_height (current_pixbuf))
1881                         scaled_image = g_object_ref (current_pixbuf);
1882                 else
1883                         /* FIXME: We don't want to scale the whole area, just the right
1884                          * area of it */
1885                         scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
1886                                                                 width, height,
1887                                                                 GDK_INTERP_NEAREST);
1888
1889                 if (selection_pixbuf == NULL)
1890                         scaled_selection = NULL;
1891                 else if (width == gdk_pixbuf_get_width (selection_pixbuf) &&
1892                          height == gdk_pixbuf_get_height (selection_pixbuf))
1893                         scaled_selection = g_object_ref (selection_pixbuf);
1894                 else
1895                         /* FIXME: We don't want to scale the whole area, just the right
1896                          * area of it */
1897                         scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf,
1898                                                                     width, height,
1899                                                                     GDK_INTERP_NEAREST);
1900
1901                 if (scaled_image) {
1902                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
1903                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
1904                                          scaled_image,
1905                                          overlap.x - real_page_area.x,
1906                                          overlap.y - real_page_area.y,
1907                                          overlap.x, overlap.y,
1908                                          overlap.width, overlap.height,
1909                                          GDK_RGB_DITHER_NORMAL,
1910                                          0, 0);
1911                         g_object_unref (scaled_image);
1912                 } else {
1913                         draw_loading_text (view,
1914                                            &real_page_area,
1915                                            expose_area);
1916                 }
1917
1918                 if (scaled_selection) {
1919                         gdk_draw_pixbuf (GTK_WIDGET(view)->window,
1920                                          GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
1921                                          scaled_selection,
1922                                          overlap.x - real_page_area.x,
1923                                          overlap.y - real_page_area.y,
1924                                          overlap.x, overlap.y,
1925                                          overlap.width, overlap.height,
1926                                          GDK_RGB_DITHER_NORMAL,
1927                                          0, 0);
1928                         g_object_unref (scaled_selection);
1929                 }
1930         }
1931 }
1932
1933 /*** GObject functions ***/
1934
1935 static void
1936 ev_view_finalize (GObject *object)
1937 {
1938         EvView *view = EV_VIEW (object);
1939
1940         LOG ("Finalize");
1941
1942         g_free (view->status);
1943         g_free (view->find_status);
1944
1945         clear_selection (view);
1946
1947         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
1948 }
1949
1950 static void
1951 ev_view_destroy (GtkObject *object)
1952 {
1953         EvView *view = EV_VIEW (object);
1954
1955         if (view->document) {
1956                 g_object_unref (view->document);
1957                 view->document = NULL;
1958         }
1959
1960         if (view->pixbuf_cache) {
1961                 g_object_unref (view->pixbuf_cache);
1962                 view->pixbuf_cache = NULL;
1963         }
1964
1965         if (view->link_tooltip) {
1966                 gtk_widget_destroy (view->link_tooltip);
1967         }
1968
1969         ev_view_set_scroll_adjustments (view, NULL, NULL);
1970
1971         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
1972 }
1973
1974 static void
1975 ev_view_set_property (GObject      *object,
1976                       guint         prop_id,
1977                       const GValue *value,
1978                       GParamSpec   *pspec)
1979 {
1980         EvView *view = EV_VIEW (object);
1981
1982         switch (prop_id)
1983         {
1984         case PROP_CONTINUOUS:
1985                 ev_view_set_continuous (view, g_value_get_boolean (value));
1986                 break;
1987         case PROP_DUAL_PAGE:
1988                 ev_view_set_dual_page (view, g_value_get_boolean (value));
1989                 break;
1990         case PROP_FULLSCREEN:
1991                 ev_view_set_fullscreen (view, g_value_get_boolean (value));
1992                 break;
1993         case PROP_PRESENTATION:
1994                 ev_view_set_presentation (view, g_value_get_boolean (value));
1995                 break;
1996         case PROP_SIZING_MODE:
1997                 ev_view_set_sizing_mode (view, g_value_get_enum (value));
1998                 break;
1999         case PROP_ZOOM:
2000                 ev_view_set_zoom (view, g_value_get_double (value), FALSE);
2001                 break;
2002         case PROP_ROTATION:
2003                 ev_view_set_rotation (view, g_value_get_int (value));
2004                 break;
2005         default:
2006                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2007         }
2008 }
2009
2010 static void
2011 ev_view_get_property (GObject *object,
2012                       guint prop_id,
2013                       GValue *value,
2014                       GParamSpec *pspec)
2015 {
2016         EvView *view = EV_VIEW (object);
2017
2018         switch (prop_id)
2019         {
2020         case PROP_STATUS:
2021                 g_value_set_string (value, view->status);
2022                 break;
2023         case PROP_FIND_STATUS:
2024                 g_value_set_string (value, view->status);
2025                 break;
2026         case PROP_CONTINUOUS:
2027                 g_value_set_boolean (value, view->continuous);
2028                 break;
2029         case PROP_DUAL_PAGE:
2030                 g_value_set_boolean (value, view->dual_page);
2031                 break;
2032         case PROP_FULLSCREEN:
2033                 g_value_set_boolean (value, view->fullscreen);
2034                 break;
2035         case PROP_PRESENTATION:
2036                 g_value_set_boolean (value, view->presentation);
2037                 break;
2038         case PROP_SIZING_MODE:
2039                 g_value_set_enum (value, view->sizing_mode);
2040                 break;
2041         case PROP_ZOOM:
2042                 g_value_set_double (value, view->scale);
2043                 break;
2044         case PROP_ROTATION:
2045                 g_value_set_int (value, view->rotation);
2046                 break;
2047         default:
2048                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2049         }
2050 }
2051
2052 static void
2053 ev_view_class_init (EvViewClass *class)
2054 {
2055         GObjectClass *object_class = G_OBJECT_CLASS (class);
2056         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
2057         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
2058         GtkBindingSet *binding_set;
2059
2060         object_class->finalize = ev_view_finalize;
2061         object_class->set_property = ev_view_set_property;
2062         object_class->get_property = ev_view_get_property;
2063
2064         widget_class->expose_event = ev_view_expose_event;
2065         widget_class->button_press_event = ev_view_button_press_event;
2066         widget_class->motion_notify_event = ev_view_motion_notify_event;
2067         widget_class->button_release_event = ev_view_button_release_event;
2068         widget_class->focus_in_event = ev_view_focus_in;
2069         widget_class->focus_out_event = ev_view_focus_out;
2070         widget_class->size_request = ev_view_size_request;
2071         widget_class->size_allocate = ev_view_size_allocate;
2072         widget_class->realize = ev_view_realize;
2073         widget_class->unrealize = ev_view_unrealize;
2074         widget_class->scroll_event = ev_view_scroll_event;
2075         widget_class->leave_notify_event = ev_view_leave_notify_event;
2076         widget_class->style_set = ev_view_style_set;
2077         gtk_object_class->destroy = ev_view_destroy;
2078
2079         class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
2080         class->binding_activated = ev_view_binding_activated;
2081
2082         widget_class->set_scroll_adjustments_signal =
2083             g_signal_new ("set-scroll-adjustments",
2084                           G_OBJECT_CLASS_TYPE (object_class),
2085                           G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2086                           G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
2087                           NULL, NULL,
2088                           ev_marshal_VOID__OBJECT_OBJECT,
2089                           G_TYPE_NONE, 2,
2090                           GTK_TYPE_ADJUSTMENT,
2091                           GTK_TYPE_ADJUSTMENT);
2092
2093         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
2094                          G_TYPE_FROM_CLASS (object_class),
2095                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2096                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
2097                          NULL, NULL,
2098                          ev_marshal_VOID__ENUM_BOOLEAN,
2099                          G_TYPE_NONE, 2,
2100                          GTK_TYPE_SCROLL_TYPE,
2101                          G_TYPE_BOOLEAN);
2102
2103         signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid",
2104                          G_TYPE_FROM_CLASS (object_class),
2105                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
2106                          G_STRUCT_OFFSET (EvViewClass, zoom_invalid),
2107                          NULL, NULL,
2108                          ev_marshal_VOID__VOID,
2109                          G_TYPE_NONE, 0, G_TYPE_NONE);
2110
2111         g_object_class_install_property (object_class,
2112                                          PROP_STATUS,
2113                                          g_param_spec_string ("status",
2114                                                               "Status Message",
2115                                                               "The status message",
2116                                                               NULL,
2117                                                               G_PARAM_READABLE));
2118
2119         g_object_class_install_property (object_class,
2120                                          PROP_FIND_STATUS,
2121                                          g_param_spec_string ("find-status",
2122                                                               "Find Status Message",
2123                                                               "The find status message",
2124                                                               NULL,
2125                                                               G_PARAM_READABLE));
2126
2127         g_object_class_install_property (object_class,
2128                                          PROP_CONTINUOUS,
2129                                          g_param_spec_boolean ("continuous",
2130                                                                "Continuous",
2131                                                                "Continuous scrolling mode",
2132                                                                TRUE,
2133                                                                G_PARAM_READWRITE));
2134
2135         g_object_class_install_property (object_class,
2136                                          PROP_DUAL_PAGE,
2137                                          g_param_spec_boolean ("dual-page",
2138                                                                "Dual Page",
2139                                                                "Two pages visible at once",
2140                                                                FALSE,
2141                                                                G_PARAM_READWRITE));
2142         g_object_class_install_property (object_class,
2143                                          PROP_FULLSCREEN,
2144                                          g_param_spec_boolean ("fullscreen",
2145                                                                "Full Screen",
2146                                                                "Draw page in a fullscreen fashion",
2147                                                                FALSE,
2148                                                                G_PARAM_READWRITE));
2149         g_object_class_install_property (object_class,
2150                                          PROP_PRESENTATION,
2151                                          g_param_spec_boolean ("presentation",
2152                                                                "Presentation",
2153                                                                "Draw page in presentation mode",
2154                                                                TRUE,
2155                                                                G_PARAM_READWRITE));
2156
2157         g_object_class_install_property (object_class,
2158                                          PROP_SIZING_MODE,
2159                                          g_param_spec_enum ("sizing-mode",
2160                                                             "Sizing Mode",
2161                                                             "Sizing Mode",
2162                                                             EV_TYPE_SIZING_MODE,
2163                                                             EV_SIZING_FIT_WIDTH,
2164                                                             G_PARAM_READWRITE));
2165
2166         g_object_class_install_property (object_class,
2167                                          PROP_ZOOM,
2168                                          g_param_spec_double ("zoom",
2169                                                               "Zoom factor",
2170                                                                "Zoom factor",
2171                                                                MIN_SCALE,
2172                                                                MAX_SCALE,
2173                                                                1.0,
2174                                                                G_PARAM_READWRITE));
2175         g_object_class_install_property (object_class,
2176                                          PROP_ROTATION,
2177                                          g_param_spec_double ("rotation",
2178                                                               "Rotation",
2179                                                                "Rotation",
2180                                                                0,
2181                                                                360,
2182                                                                0,
2183                                                                G_PARAM_READWRITE));
2184
2185         binding_set = gtk_binding_set_by_class (class);
2186
2187         add_scroll_binding_keypad (binding_set, GDK_Left,  GTK_SCROLL_STEP_BACKWARD, TRUE);
2188         add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD,  TRUE);
2189         add_scroll_binding_keypad (binding_set, GDK_Up,    GTK_SCROLL_STEP_BACKWARD, FALSE);
2190         add_scroll_binding_keypad (binding_set, GDK_Down,  GTK_SCROLL_STEP_FORWARD,  FALSE);
2191 }
2192
2193 static void
2194 ev_view_init (EvView *view)
2195 {
2196         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
2197
2198         view->spacing = 5;
2199         view->scale = 1.0;
2200         view->current_page = 0;
2201         view->pressed_button = -1;
2202         view->cursor = EV_VIEW_CURSOR_NORMAL;
2203         view->drag_info.in_drag = FALSE;
2204         view->selection_info.in_selection = FALSE;
2205         view->selection_mode = EV_VIEW_SELECTION_TEXT;
2206         view->continuous = TRUE;
2207         view->dual_page = FALSE;
2208         view->presentation = FALSE;
2209         view->fullscreen = FALSE;
2210         view->sizing_mode = EV_SIZING_FIT_WIDTH;
2211         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2212 }
2213
2214 /*** Callbacks ***/
2215
2216 static void
2217 find_changed_cb (EvDocument *document, int page, EvView *view)
2218 {
2219         jump_to_find_page (view, EV_VIEW_FIND_NEXT);
2220         jump_to_find_result (view);
2221         update_find_status_message (view);
2222
2223         if (view->current_page == page)
2224                 gtk_widget_queue_draw (GTK_WIDGET (view));
2225 }
2226
2227 static void
2228 job_finished_cb (EvPixbufCache *pixbuf_cache,
2229                  EvView        *view)
2230 {
2231         gtk_widget_queue_draw (GTK_WIDGET (view));
2232 }
2233
2234 static void
2235 page_changed_cb (EvPageCache *page_cache,
2236                  int          new_page,
2237                  EvView      *view)
2238 {
2239         if (view->current_page != new_page) {
2240
2241                 view->current_page = new_page;
2242                 view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2243                 gtk_widget_queue_resize (GTK_WIDGET (view));
2244
2245                 if (EV_IS_DOCUMENT_FIND (view->document)) {
2246                         view->find_page = new_page;
2247                         view->find_result = 0;
2248                         update_find_status_message (view);
2249                 }
2250         }
2251 }
2252
2253 static void on_adjustment_value_changed (GtkAdjustment  *adjustment,
2254                                          EvView *view)
2255 {
2256         int dx = 0, dy = 0;
2257
2258         if (! GTK_WIDGET_REALIZED (view))
2259                 return;
2260
2261         if (view->hadjustment) {
2262                 dx = view->scroll_x - (int) view->hadjustment->value;
2263                 view->scroll_x = (int) view->hadjustment->value;
2264         } else {
2265                 view->scroll_x = 0;
2266         }
2267
2268         if (view->vadjustment) {
2269                 dy = view->scroll_y - (int) view->vadjustment->value;
2270                 view->scroll_y = (int) view->vadjustment->value;
2271         } else {
2272                 view->scroll_y = 0;
2273         }
2274
2275
2276         if (view->pending_resize)
2277                 gtk_widget_queue_draw (GTK_WIDGET (view));
2278         else
2279                 gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy);
2280
2281
2282         if (view->document)
2283                 view_update_range_and_current_page (view);
2284 }
2285
2286 GtkWidget*
2287 ev_view_new (void)
2288 {
2289         GtkWidget *view;
2290
2291         view = g_object_new (EV_TYPE_VIEW, NULL);
2292
2293         return view;
2294 }
2295
2296 static void
2297 setup_caches (EvView *view)
2298 {
2299         view->page_cache = ev_page_cache_get (view->document);
2300         g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
2301         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
2302         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
2303 }
2304
2305 static void
2306 clear_caches (EvView *view)
2307 {
2308         if (view->pixbuf_cache) {
2309                 g_object_unref (view->pixbuf_cache);
2310                 view->pixbuf_cache = NULL;
2311         }
2312
2313         if (view->page_cache) {
2314                 view->page_cache = NULL;
2315         }
2316 }
2317
2318 void
2319 ev_view_set_document (EvView     *view,
2320                       EvDocument *document)
2321 {
2322         g_return_if_fail (EV_IS_VIEW (view));
2323
2324         if (document != view->document) {
2325                 clear_caches (view);
2326
2327                 if (view->document) {
2328                         g_signal_handlers_disconnect_by_func (view->document,
2329                                                               find_changed_cb,
2330                                                               view);
2331                         g_object_unref (view->document);
2332                         view->page_cache = NULL;
2333
2334                 }
2335
2336                 view->document = document;
2337                 view->find_page = 0;
2338                 view->find_result = 0;
2339
2340                 if (view->document) {
2341                         g_object_ref (view->document);
2342                         if (EV_IS_DOCUMENT_FIND (view->document)) {
2343                                 g_signal_connect (view->document,
2344                                                   "find_changed",
2345                                                   G_CALLBACK (find_changed_cb),
2346                                                   view);
2347                         }
2348
2349                         setup_caches (view);
2350                 }
2351
2352                 gtk_widget_queue_resize (GTK_WIDGET (view));
2353         }
2354 }
2355
2356 /*** Zoom and sizing mode ***/
2357
2358 #define EPSILON 0.0000001
2359 void
2360 ev_view_set_zoom (EvView   *view,
2361                   double    factor,
2362                   gboolean  relative)
2363 {
2364         double scale;
2365
2366         if (relative)
2367                 scale = view->scale * factor;
2368         else
2369                 scale = factor;
2370
2371         scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
2372
2373         if (ABS (view->scale - scale) < EPSILON)
2374                 return;
2375
2376         view->scale = scale;
2377         view->pending_resize = TRUE;
2378
2379         gtk_widget_queue_resize (GTK_WIDGET (view));
2380
2381         g_object_notify (G_OBJECT (view), "zoom");
2382 }
2383
2384 double
2385 ev_view_get_zoom (EvView *view)
2386 {
2387         return view->scale;
2388 }
2389
2390 gboolean
2391 ev_view_get_continuous (EvView *view)
2392 {
2393         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2394
2395         return view->continuous;
2396 }
2397
2398 void
2399 ev_view_set_continuous (EvView   *view,
2400                         gboolean  continuous)
2401 {
2402         g_return_if_fail (EV_IS_VIEW (view));
2403
2404         continuous = continuous != FALSE;
2405
2406         if (view->continuous != continuous) {
2407                 view->continuous = continuous;
2408                 view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2409                 gtk_widget_queue_resize (GTK_WIDGET (view));
2410         }
2411
2412         g_object_notify (G_OBJECT (view), "continuous");
2413 }
2414
2415 gboolean
2416 ev_view_get_dual_page (EvView *view)
2417 {
2418         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2419
2420         return view->dual_page;
2421 }
2422
2423 void
2424 ev_view_set_dual_page (EvView   *view,
2425                        gboolean  dual_page)
2426 {
2427         g_return_if_fail (EV_IS_VIEW (view));
2428
2429         dual_page = dual_page != FALSE;
2430
2431         if (view->dual_page == dual_page)
2432                 return;
2433
2434         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2435         view->dual_page = dual_page;
2436         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
2437          * preload_cache_size to be 2 if dual_page is set.
2438          */
2439         gtk_widget_queue_resize (GTK_WIDGET (view));
2440
2441         g_object_notify (G_OBJECT (view), "dual-page");
2442 }
2443
2444 void
2445 ev_view_set_fullscreen (EvView   *view,
2446                          gboolean  fullscreen)
2447 {
2448         g_return_if_fail (EV_IS_VIEW (view));
2449
2450         fullscreen = fullscreen != FALSE;
2451
2452         if (view->fullscreen == fullscreen)
2453                 return;
2454
2455         view->fullscreen = fullscreen;
2456         gtk_widget_queue_resize (GTK_WIDGET (view));
2457
2458         g_object_notify (G_OBJECT (view), "fullscreen");
2459 }
2460
2461 gboolean
2462 ev_view_get_fullscreen (EvView *view)
2463 {
2464         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2465
2466         return view->fullscreen;
2467 }
2468
2469 void
2470 ev_view_set_presentation (EvView   *view,
2471                           gboolean  presentation)
2472 {
2473         g_return_if_fail (EV_IS_VIEW (view));
2474
2475         presentation = presentation != FALSE;
2476
2477         if (view->presentation == presentation)
2478                 return;
2479
2480         view->presentation = presentation;
2481         view->pending_scroll = SCROLL_TO_CURRENT_PAGE;
2482         gtk_widget_queue_resize (GTK_WIDGET (view));
2483
2484         if (GTK_WIDGET_REALIZED (view)) {
2485                 if (view->presentation)
2486                         gdk_window_set_background (GTK_WIDGET(view)->window,
2487                                                    &GTK_WIDGET (view)->style->black);
2488                 else
2489                         gdk_window_set_background (GTK_WIDGET(view)->window,
2490                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
2491         }
2492
2493
2494         g_object_notify (G_OBJECT (view), "presentation");
2495 }
2496
2497 gboolean
2498 ev_view_get_presentation (EvView *view)
2499 {
2500         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
2501
2502         return view->presentation;
2503 }
2504
2505 void
2506 ev_view_set_sizing_mode (EvView       *view,
2507                          EvSizingMode  sizing_mode)
2508 {
2509         g_return_if_fail (EV_IS_VIEW (view));
2510
2511         if (view->sizing_mode == sizing_mode)
2512                 return;
2513
2514         view->sizing_mode = sizing_mode;
2515         gtk_widget_queue_resize (GTK_WIDGET (view));
2516
2517         g_object_notify (G_OBJECT (view), "sizing-mode");
2518 }
2519
2520 EvSizingMode
2521 ev_view_get_sizing_mode (EvView *view)
2522 {
2523         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
2524
2525         return view->sizing_mode;
2526 }
2527
2528 gboolean
2529 ev_view_can_zoom_in (EvView *view)
2530 {
2531         return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE;
2532 }
2533
2534 gboolean
2535 ev_view_can_zoom_out (EvView *view)
2536 {
2537         return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE;
2538 }
2539
2540 void
2541 ev_view_zoom_in (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_IN_FACTOR, TRUE);
2547 }
2548
2549 void
2550 ev_view_zoom_out (EvView *view)
2551 {
2552         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
2553
2554         view->pending_scroll = SCROLL_TO_CENTER;
2555         ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE);
2556 }
2557
2558 void
2559 ev_view_rotate_right (EvView *view)
2560 {
2561         int rotation = view->rotation + 90;
2562
2563         if (rotation >= 360) {
2564                 rotation -= 360;
2565         }
2566
2567         ev_view_set_rotation (view, rotation);
2568 }
2569
2570 void
2571 ev_view_rotate_left (EvView *view)
2572 {
2573         int rotation = view->rotation - 90;
2574
2575         if (rotation < 0) {
2576                 rotation += 360;
2577         }
2578
2579         ev_view_set_rotation (view, rotation);
2580 }
2581
2582 void
2583 ev_view_set_rotation (EvView *view, int rotation)
2584 {
2585         view->rotation = rotation;
2586
2587         if (view->pixbuf_cache) {
2588                 ev_pixbuf_cache_clear (view->pixbuf_cache);
2589                 gtk_widget_queue_resize (GTK_WIDGET (view));
2590         }
2591
2592         if (rotation != 0)
2593                 clear_selection (view);
2594
2595         g_object_notify (G_OBJECT (view), "rotation");
2596 }
2597
2598 int
2599 ev_view_get_rotation (EvView *view)
2600 {
2601         return view->rotation;
2602 }
2603
2604 static double
2605 zoom_for_size_fit_width (int doc_width,
2606                          int doc_height,
2607                          int target_width,
2608                          int target_height,
2609                          int vsb_width)
2610 {
2611         double scale;
2612
2613         scale = (double)target_width / doc_width;
2614
2615         if (doc_height * scale > target_height)
2616                 scale = (double) (target_width - vsb_width) / doc_width;
2617
2618         return scale;
2619 }
2620
2621 static double
2622 zoom_for_size_best_fit (int doc_width,
2623                         int doc_height,
2624                         int target_width,
2625                         int target_height,
2626                         int vsb_width,
2627                         int hsb_width)
2628 {
2629         double w_scale;
2630         double h_scale;
2631
2632         w_scale = (double)target_width / doc_width;
2633         h_scale = (double)target_height / doc_height;
2634
2635         if (doc_height * w_scale > target_height)
2636                 w_scale = (double) (target_width - vsb_width) / doc_width;
2637         if (doc_width * h_scale > target_width)
2638                 h_scale = (double) (target_height - hsb_width) / doc_height;
2639
2640         return MIN (w_scale, h_scale);
2641 }
2642
2643
2644 static void
2645 ev_view_zoom_for_size_presentation (EvView *view,
2646                                     int     width,
2647                                     int     height)
2648 {
2649         int doc_width, doc_height;
2650         gdouble scale;
2651
2652         ev_page_cache_get_size (view->page_cache,
2653                                 view->current_page,
2654                                 view->rotation,
2655                                 1.0,
2656                                 &doc_width,
2657                                 &doc_height);
2658         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0);
2659         ev_view_set_zoom (view, scale, FALSE);
2660 }
2661
2662 static void
2663 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
2664                            int     width,
2665                            int     height,
2666                            int     vsb_width,
2667                            int     hsb_height)
2668 {
2669         int doc_width, doc_height;
2670         GtkBorder border;
2671         gdouble scale;
2672
2673         ev_page_cache_get_max_width (view->page_cache,
2674                                      view->rotation,
2675                                      1.0,
2676                                      &doc_width);
2677         ev_page_cache_get_max_height (view->page_cache,
2678                                       view->rotation,
2679                                       1.0,
2680                                       &doc_height);
2681         compute_border (view, doc_width, doc_height, &border);
2682
2683         doc_width = doc_width * 2;
2684         width -= (2 * (border.left + border.right) + 3 * view->spacing);
2685         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2686
2687         /* FIXME: We really need to calculate the overall height here, not the
2688          * page height.  We assume there's always a vertical scrollbar for
2689          * now.  We need to fix this. */
2690         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2691                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2692         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2693                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2694         else
2695                 g_assert_not_reached ();
2696
2697         ev_view_set_zoom (view, scale, FALSE);
2698 }
2699
2700 static void
2701 ev_view_zoom_for_size_continuous (EvView *view,
2702                                   int     width,
2703                                   int     height,
2704                                   int     vsb_width,
2705                                   int     hsb_height)
2706 {
2707         int doc_width, doc_height;
2708         GtkBorder border;
2709         gdouble scale;
2710
2711         ev_page_cache_get_max_width (view->page_cache,
2712                                      view->rotation,
2713                                      1.0,
2714                                      &doc_width);
2715         ev_page_cache_get_max_height (view->page_cache,
2716                                       view->rotation,
2717                                       1.0,
2718                                       &doc_height);
2719         compute_border (view, doc_width, doc_height, &border);
2720
2721         width -= (border.left + border.right + 2 * view->spacing);
2722         height -= (border.top + border.bottom + 2 * view->spacing - 1);
2723
2724         /* FIXME: We really need to calculate the overall height here, not the
2725          * page height.  We assume there's always a vertical scrollbar for
2726          * now.  We need to fix this. */
2727         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2728                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0);
2729         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2730                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height);
2731         else
2732                 g_assert_not_reached ();
2733
2734         ev_view_set_zoom (view, scale, FALSE);
2735 }
2736
2737 static void
2738 ev_view_zoom_for_size_dual_page (EvView *view,
2739                                  int     width,
2740                                  int     height,
2741                                  int     vsb_width,
2742                                  int     hsb_height)
2743 {
2744         GtkBorder border;
2745         gint doc_width, doc_height;
2746         gdouble scale;
2747         gint other_page;
2748
2749         other_page = view->current_page ^ 1;
2750
2751         /* Find the largest of the two. */
2752         ev_page_cache_get_size (view->page_cache,
2753                                 view->current_page,
2754                                 view->rotation,
2755                                 1.0,
2756                                 &doc_width, &doc_height);
2757
2758         if (other_page < ev_page_cache_get_n_pages (view->page_cache)) {
2759                 gint width_2, height_2;
2760                 ev_page_cache_get_size (view->page_cache,
2761                                         other_page,
2762                                         view->rotation,
2763                                         1.0,
2764                                         &width_2, &height_2);
2765                 if (width_2 > doc_width)
2766                         doc_width = width_2;
2767                 if (height_2 > doc_height)
2768                         doc_height = height_2;
2769         }
2770         compute_border (view, doc_width, doc_height, &border);
2771
2772         doc_width = doc_width * 2;
2773         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
2774         height -= (border.top + border.bottom + 2 * view->spacing);
2775
2776         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2777                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
2778         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2779                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
2780         else
2781                 g_assert_not_reached ();
2782
2783         ev_view_set_zoom (view, scale, FALSE);
2784 }
2785
2786 static void
2787 ev_view_zoom_for_size_single_page (EvView *view,
2788                                    int     width,
2789                                    int     height,
2790                                    int     vsb_width,
2791                                    int     hsb_height)
2792 {
2793         int doc_width, doc_height;
2794         GtkBorder border;
2795         gdouble scale;
2796
2797         ev_page_cache_get_size (view->page_cache,
2798                                 view->current_page,
2799                                 view->rotation,
2800                                 1.0,
2801                                 &doc_width,
2802                                 &doc_height);
2803         /* Get an approximate border */
2804         compute_border (view, width, height, &border);
2805
2806         width -= (border.left + border.right + 2 * view->spacing);
2807         height -= (border.top + border.bottom + 2 * view->spacing);
2808
2809         if (view->sizing_mode == EV_SIZING_FIT_WIDTH)
2810                 scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width);
2811         else if (view->sizing_mode == EV_SIZING_BEST_FIT)
2812                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height);
2813         else
2814                 g_assert_not_reached ();
2815
2816         ev_view_set_zoom (view, scale, FALSE);
2817 }
2818
2819 void
2820 ev_view_set_zoom_for_size (EvView *view,
2821                            int     width,
2822                            int     height,
2823                            int     vsb_width,
2824                            int     hsb_height)
2825 {
2826         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2827                           view->sizing_mode == EV_SIZING_BEST_FIT);
2828         g_return_if_fail (width >= 0);
2829         g_return_if_fail (height >= 0);
2830
2831         if (view->document == NULL)
2832                 return;
2833
2834         if (view->presentation)
2835                 ev_view_zoom_for_size_presentation (view, width, height);
2836         else if (view->continuous && view->dual_page)
2837                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height);
2838         else if (view->continuous)
2839                 ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height);
2840         else if (view->dual_page)
2841                 ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height);
2842         else
2843                 ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height);
2844 }
2845
2846 /*** Status text messages ***/
2847
2848 const char *
2849 ev_view_get_status (EvView *view)
2850 {
2851         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
2852
2853         return view->status;
2854 }
2855
2856 static void
2857 ev_view_set_status (EvView *view, const char *message)
2858 {
2859         g_return_if_fail (EV_IS_VIEW (view));
2860
2861         if (message != view->status) {
2862                 g_free (view->status);
2863                 view->status = g_strdup (message);
2864                 g_object_notify (G_OBJECT (view), "status");
2865         }
2866 }
2867
2868 static void
2869 update_find_status_message (EvView *view)
2870 {
2871         char *message;
2872
2873         if (view->current_page == view->find_page) {
2874                 int results;
2875
2876                 results = ev_document_find_get_n_results
2877                                 (EV_DOCUMENT_FIND (view->document),
2878                                  view->current_page);
2879                 /* TRANS: Sometimes this could be better translated as
2880                    "%d hit(s) on this page".  Therefore this string
2881                    contains plural cases. */
2882                 message = g_strdup_printf (ngettext ("%d found on this page",
2883                                                      "%d found on this page",
2884                                                      results),
2885                                            results);
2886         } else {
2887                 double percent;
2888
2889                 percent = ev_document_find_get_progress
2890                                 (EV_DOCUMENT_FIND (view->document));
2891                 if (percent >= (1.0 - 1e-10)) {
2892                         message = g_strdup (_("Not found"));
2893                 } else {
2894                         message = g_strdup_printf (_("%3d%% remaining to search"),
2895                                                    (int) ((1.0 - percent) * 100));
2896                 }
2897
2898         }
2899         ev_view_set_find_status (view, message);
2900         g_free (message);
2901 }
2902
2903 const char *
2904 ev_view_get_find_status (EvView *view)
2905 {
2906         g_return_val_if_fail (EV_IS_VIEW (view), NULL);
2907
2908         return view->find_status;
2909 }
2910
2911 static void
2912 ev_view_set_find_status (EvView *view, const char *message)
2913 {
2914         g_return_if_fail (EV_IS_VIEW (view));
2915
2916         g_free (view->find_status);
2917         view->find_status = g_strdup (message);
2918         g_object_notify (G_OBJECT (view), "find-status");
2919 }
2920
2921 /*** Find ***/
2922
2923 static void
2924 jump_to_find_result (EvView *view)
2925 {
2926         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2927         EvRectangle rect;
2928         GdkRectangle view_rect;
2929         int n_results;
2930         int page = view->find_page;
2931
2932         n_results = ev_document_find_get_n_results (find, page);
2933
2934         if (n_results > 0  && view->find_result < n_results) {
2935                 ev_document_find_get_result
2936                         (find, page, view->find_result, &rect);
2937
2938                 doc_rect_to_view_rect (view, page, &rect, &view_rect);
2939                 ensure_rectangle_is_visible (view, &view_rect);
2940         }
2941 }
2942
2943 static void
2944 jump_to_find_page (EvView *view, EvViewFindDirection direction)
2945 {
2946         int n_pages, i;
2947
2948         n_pages = ev_page_cache_get_n_pages (view->page_cache);
2949
2950         for (i = 0; i < n_pages; i++) {
2951                 int has_results;
2952                 int page;
2953
2954                 if (direction == EV_VIEW_FIND_NEXT)
2955                         page = view->find_page + i;
2956                 else
2957                         page = view->find_page - i;
2958
2959
2960                 if (page >= n_pages) {
2961                         page = page - n_pages;
2962                 }
2963                 if (page < 0)
2964                         page = page + n_pages;
2965
2966                 has_results = ev_document_find_page_has_results
2967                                 (EV_DOCUMENT_FIND (view->document), page);
2968                 if (has_results == -1) {
2969                         view->find_page = page;
2970                         break;
2971                 } else if (has_results == 1) {
2972                         ev_page_cache_set_current_page (view->page_cache, page);
2973                         break;
2974                 }
2975         }
2976 }
2977
2978 gboolean
2979 ev_view_can_find_next (EvView *view)
2980 {
2981         int n_results = 0;
2982
2983         if (EV_IS_DOCUMENT_FIND (view->document)) {
2984                 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2985
2986                 n_results = ev_document_find_get_n_results (find, view->current_page);
2987         }
2988
2989         return n_results > 0;
2990 }
2991
2992 void
2993 ev_view_find_next (EvView *view)
2994 {
2995         int n_results, n_pages;
2996         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
2997
2998         n_results = ev_document_find_get_n_results (find, view->current_page);
2999
3000         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3001
3002         view->find_result++;
3003
3004         if (view->find_result >= n_results) {
3005
3006                 view->find_result = 0;
3007                 view->find_page++;
3008                 if (view->find_page >= n_pages) {
3009                         view->find_page = 0;
3010                 }
3011
3012                 jump_to_find_page (view, EV_VIEW_FIND_NEXT);
3013                 jump_to_find_result (view);
3014         } else {
3015                 jump_to_find_result (view);
3016                 gtk_widget_queue_draw (GTK_WIDGET (view));
3017         }
3018 }
3019
3020 void
3021 ev_view_find_previous (EvView *view)
3022 {
3023         int n_results, n_pages;
3024         EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
3025         EvPageCache *page_cache;
3026
3027         page_cache = ev_page_cache_get (view->document);
3028
3029         n_results = ev_document_find_get_n_results (find, view->current_page);
3030
3031         n_pages = ev_page_cache_get_n_pages (page_cache);
3032
3033         view->find_result--;
3034
3035         if (view->find_result < 0) {
3036
3037                 view->find_page--;
3038                 if (view->find_page < 0) {
3039                         view->find_page = n_pages - 1;
3040                 }
3041
3042                 jump_to_find_page (view, EV_VIEW_FIND_PREV);
3043                 view->find_result = ev_document_find_get_n_results (find, view->current_page) - 1;
3044                 jump_to_find_result (view);
3045         } else {
3046                 jump_to_find_result (view);
3047                 gtk_widget_queue_draw (GTK_WIDGET (view));
3048         }
3049 }
3050
3051 /*** Selections ***/
3052
3053 /* compute_new_selection_rect/text calculates the area currently selected by
3054  * view_rect.  each handles a different mode;
3055  */
3056 static GList *
3057 compute_new_selection_rect (EvView       *view,
3058                             GdkPoint     *start,
3059                             GdkPoint     *stop)
3060 {
3061         GdkRectangle view_rect;
3062         int n_pages, i;
3063         GList *list = NULL;
3064
3065         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
3066
3067         view_rect.x = MIN (start->x, stop->x);
3068         view_rect.y = MIN (start->y, stop->y);
3069         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
3070         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
3071
3072         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3073
3074         for (i = 0; i < n_pages; i++) {
3075                 GdkRectangle page_area;
3076                 GtkBorder border;
3077
3078                 if (get_page_extents (view, i, &page_area, &border)) {
3079                         GdkRectangle overlap;
3080
3081                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
3082                                 EvViewSelection *selection;
3083
3084                                 selection = g_new0 (EvViewSelection, 1);
3085                                 selection->page = i;
3086                                 view_rect_to_doc_rect (view, &overlap, &page_area,
3087                                                        &(selection->rect));
3088
3089                                 list = g_list_append (list, selection);
3090                         }
3091                 }
3092         }
3093
3094         return list;
3095 }
3096
3097 static gboolean
3098 gdk_rectangle_point_in (GdkRectangle *rectangle,
3099                         GdkPoint     *point)
3100 {
3101         return rectangle->x <= point->x &&
3102                 rectangle->y <= point->y &&
3103                 point->x < rectangle->x + rectangle->width &&
3104                 point->y < rectangle->y + rectangle->height;
3105 }
3106
3107 static GList *
3108 compute_new_selection_text (EvView   *view,
3109                             GdkPoint *start,
3110                             GdkPoint *stop)
3111 {
3112         int n_pages, i, first, last;
3113         GList *list = NULL;
3114         EvViewSelection *selection;
3115         gint width, height;
3116         int start_page, end_page;
3117
3118         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
3119
3120         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3121
3122         /* First figure out the range of pages the selection
3123          * affects. */
3124         first = n_pages;
3125         last = 0;
3126         if (view->continuous) {
3127                 start_page = 0;
3128                 end_page = n_pages;
3129         } else if (view->dual_page) {
3130                 start_page = view->start_page;
3131                 end_page = view->end_page + 1;
3132         } else {
3133                 start_page = view->current_page;
3134                 end_page = view->current_page + 1;
3135         }
3136
3137         for (i = start_page; i < end_page; i++) {
3138                 GdkRectangle page_area;
3139                 GtkBorder border;
3140
3141                 get_page_extents (view, i, &page_area, &border);
3142                 if (gdk_rectangle_point_in (&page_area, start) ||
3143                     gdk_rectangle_point_in (&page_area, stop)) {
3144                         if (first == n_pages)
3145                                 first = i;
3146                         last = i;
3147                 }
3148
3149         }
3150
3151
3152
3153         /* Now create a list of EvViewSelection's for the affected
3154          * pages.  This could be an empty list, a list of just one
3155          * page or a number of pages.*/
3156         for (i = first; i < last + 1; i++) {
3157                 GdkRectangle page_area;
3158                 GtkBorder border;
3159                 GdkPoint *point;
3160
3161                 ev_page_cache_get_size (view->page_cache, i,
3162                                         view->rotation,
3163                                         1.0, &width, &height);
3164
3165                 selection = g_new0 (EvViewSelection, 1);
3166                 selection->page = i;
3167                 selection->rect.x1 = selection->rect.y1 = 0;
3168                 selection->rect.x2 = width;
3169                 selection->rect.y2 = height;
3170
3171                 get_page_extents (view, i, &page_area, &border);
3172
3173                 if (gdk_rectangle_point_in (&page_area, start))
3174                         point = start;
3175                 else
3176                         point = stop;
3177
3178                 if (i == first)
3179                         view_point_to_doc_point (view, point, &page_area,
3180                                                  &selection->rect.x1,
3181                                                  &selection->rect.y1);
3182
3183                 /* If the selection is contained within just one page,
3184                  * make sure we don't write 'start' into both points
3185                  * in selection->rect. */
3186                 if (first == last)
3187                         point = stop;
3188
3189                 if (i == last)
3190                         view_point_to_doc_point (view, point, &page_area,
3191                                                  &selection->rect.x2,
3192                                                  &selection->rect.y2);
3193
3194                 list = g_list_append (list, selection);
3195         }
3196
3197         return list;
3198 }
3199
3200 /* This function takes the newly calculated list, and figures out which regions
3201  * have changed.  It then queues a redraw approporiately.
3202  */
3203 static void
3204 merge_selection_region (EvView *view,
3205                         GList  *new_list)
3206 {
3207         GList *old_list;
3208         GList *new_list_ptr, *old_list_ptr;
3209
3210         /* Update the selection */
3211         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
3212         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3213         view->selection_info.selections = new_list;
3214         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
3215
3216         new_list_ptr = new_list;
3217         old_list_ptr = old_list;
3218
3219         while (new_list_ptr || old_list_ptr) {
3220                 EvViewSelection *old_sel, *new_sel;
3221                 int cur_page;
3222                 GdkRegion *region = NULL;
3223
3224                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
3225                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
3226
3227                 /* Assume that the lists are in order, and we run through them
3228                  * comparing them, one page at a time.  We come out with the
3229                  * first page we see. */
3230                 if (new_sel && old_sel) {
3231                         if (new_sel->page < old_sel->page) {
3232                                 new_list_ptr = new_list_ptr->next;
3233                                 old_sel = NULL;
3234                         } else if (new_sel->page > old_sel->page) {
3235                                 old_list_ptr = old_list_ptr->next;
3236                                 new_sel = NULL;
3237                         } else {
3238                                 new_list_ptr = new_list_ptr->next;
3239                                 old_list_ptr = old_list_ptr->next;
3240                         }
3241                 } else if (new_sel) {
3242                         new_list_ptr = new_list_ptr->next;
3243                 } else if (old_sel) {
3244                         old_list_ptr = old_list_ptr->next;
3245                 }
3246
3247                 g_assert (new_sel || old_sel);
3248
3249                 /* is the page we're looking at on the screen?*/
3250                 cur_page = new_sel ? new_sel->page : old_sel->page;
3251                 if (cur_page < view->start_page || cur_page > view->end_page)
3252                         continue;
3253
3254                 /* seed the cache with a new page.  We are going to need the new
3255                  * region too. */
3256                 if (new_sel) {
3257                         GdkRegion *tmp_region = NULL;
3258                         ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache,
3259                                                               cur_page,
3260                                                               view->scale,
3261                                                               &tmp_region);
3262                         if (tmp_region) {
3263                                 new_sel->covered_region = gdk_region_copy (tmp_region);
3264                         }
3265                 }
3266
3267                 /* Now we figure out what needs redrawing */
3268                 if (old_sel && new_sel) {
3269                         if (old_sel->covered_region &&
3270                             new_sel->covered_region) {
3271                                 /* We only want to redraw the areas that have
3272                                  * changed, so we xor the old and new regions
3273                                  * and redraw if it's different */
3274                                 region = gdk_region_copy (old_sel->covered_region);
3275                                 gdk_region_xor (region, new_sel->covered_region);
3276                                 if (gdk_region_empty (region)) {
3277                                         gdk_region_destroy (region);
3278                                         region = NULL;
3279                                 }
3280                         } else if (old_sel->covered_region) {
3281                                 region = gdk_region_copy (old_sel->covered_region);
3282                         } else if (new_sel->covered_region) {
3283                                 region = gdk_region_copy (new_sel->covered_region);
3284                         }
3285                 } else if (old_sel && !new_sel) {
3286                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
3287                                 region = gdk_region_copy (old_sel->covered_region);
3288                         }
3289                 } else if (!old_sel && new_sel) {
3290                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
3291                                 region = gdk_region_copy (new_sel->covered_region);
3292                         }
3293                 } else {
3294                         g_assert_not_reached ();
3295                 }
3296
3297                 /* Redraw the damaged region! */
3298                 if (region) {
3299                         GdkRectangle page_area;
3300                         GtkBorder border;
3301
3302                         get_page_extents (view, cur_page, &page_area, &border);
3303                         gdk_region_offset (region,
3304                                            page_area.x + border.left - view->scroll_x,
3305                                            page_area.y + border.top - view->scroll_y);
3306                         gdk_window_invalidate_region (GTK_WIDGET (view)->window, region, TRUE);
3307                         gdk_region_destroy (region);
3308                 }
3309         }
3310
3311         /* Free the old list, now that we're done with it. */
3312         g_list_foreach (old_list, (GFunc) selection_free, NULL);
3313 }
3314
3315 static void
3316 compute_selections (EvView   *view,
3317                     GdkPoint *start,
3318                     GdkPoint *stop)
3319 {
3320         GList *list;
3321
3322         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
3323                 list = compute_new_selection_rect (view, start, stop);
3324         else
3325                 list = compute_new_selection_text (view, start, stop);
3326         merge_selection_region (view, list);
3327 }
3328
3329 /* Free's the selection.  It's up to the caller to queue redraws if needed.
3330  */
3331 static void
3332 selection_free (EvViewSelection *selection)
3333 {
3334         if (selection->covered_region)
3335                 gdk_region_destroy (selection->covered_region);
3336         g_free (selection);
3337 }
3338
3339 static void
3340 clear_selection (EvView *view)
3341 {
3342         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
3343         view->selection_info.selections = NULL;
3344         view->selection_info.in_selection = FALSE;
3345 }
3346
3347
3348 void
3349 ev_view_select_all (EvView *view)
3350 {
3351         int n_pages, i;
3352
3353         /* Disable selection on rotated pages for the 0.4.0 series */
3354         if (view->rotation != 0)
3355                 return;
3356
3357         clear_selection (view);
3358
3359         n_pages = ev_page_cache_get_n_pages (view->page_cache);
3360         for (i = 0; i < n_pages; i++) {
3361                 int width, height;
3362                 EvViewSelection *selection;
3363
3364                 ev_page_cache_get_size (view->page_cache,
3365                                         i,
3366                                         view->rotation,
3367                                         1.0, &width, &height);
3368
3369                 selection = g_new0 (EvViewSelection, 1);
3370                 selection->page = i;
3371                 selection->rect.x1 = selection->rect.y1 = 0;
3372                 selection->rect.x2 = width;
3373                 selection->rect.y2 = height;
3374
3375                 view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
3376         }
3377
3378         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
3379         gtk_widget_queue_draw (GTK_WIDGET (view));
3380 }
3381
3382 static char *
3383 get_selected_text (EvView *ev_view)
3384 {
3385         GString *text;
3386         GList *l;
3387
3388         text = g_string_new (NULL);
3389
3390         ev_document_doc_mutex_lock ();
3391
3392         for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
3393                 EvViewSelection *selection = (EvViewSelection *)l->data;
3394                 char *tmp;
3395
3396                 tmp = ev_document_get_text (ev_view->document,
3397                                             selection->page,
3398                                             &selection->rect);
3399                 g_string_append (text, tmp);
3400                 g_free (tmp);
3401         }
3402
3403         ev_document_doc_mutex_unlock ();
3404
3405         return g_string_free (text, FALSE);
3406 }
3407
3408 void
3409 ev_view_copy (EvView *ev_view)
3410 {
3411         GtkClipboard *clipboard;
3412         char *text;
3413
3414         if (!ev_document_can_get_text (ev_view->document)) {
3415                 return;
3416         }
3417
3418         text = get_selected_text (ev_view);
3419         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3420                                               GDK_SELECTION_CLIPBOARD);
3421         gtk_clipboard_set_text (clipboard, text, -1);
3422         g_free (text);
3423 }
3424
3425 static void
3426 ev_view_primary_get_cb (GtkClipboard     *clipboard,
3427                         GtkSelectionData *selection_data,
3428                         guint             info,
3429                         gpointer          data)
3430 {
3431         EvView *ev_view = EV_VIEW (data);
3432         char *text;
3433
3434         if (!ev_document_can_get_text (ev_view->document)) {
3435                 return;
3436         }
3437
3438         text = get_selected_text (ev_view);
3439         gtk_selection_data_set_text (selection_data, text, -1);
3440         g_free (text);
3441 }
3442
3443 static void
3444 ev_view_primary_clear_cb (GtkClipboard *clipboard,
3445                           gpointer      data)
3446 {
3447         EvView *view = EV_VIEW (data);
3448
3449         clear_selection (view);
3450 }
3451
3452 static void
3453 ev_view_update_primary_selection (EvView *ev_view)
3454 {
3455         GtkClipboard *clipboard;
3456
3457         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
3458                                               GDK_SELECTION_PRIMARY);
3459
3460         if (ev_view->selection_info.selections) {
3461                 if (!gtk_clipboard_set_with_owner (clipboard,
3462                                                    targets,
3463                                                    G_N_ELEMENTS (targets),
3464                                                    ev_view_primary_get_cb,
3465                                                    ev_view_primary_clear_cb,
3466                                                    G_OBJECT (ev_view)))
3467                         ev_view_primary_clear_cb (clipboard, ev_view);
3468         } else {
3469                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
3470                         gtk_clipboard_clear (clipboard);
3471         }
3472 }
3473
3474 /*** Cursor operations ***/
3475
3476 static GdkCursor *
3477 ev_view_create_invisible_cursor(void)
3478 {
3479        GdkBitmap *empty;
3480        GdkColor black = { 0, 0, 0, 0 };
3481        static char bits[] = { 0x00 };
3482
3483        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
3484
3485        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
3486 }
3487
3488 static void
3489 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
3490 {
3491         GdkCursor *cursor = NULL;
3492         GdkDisplay *display;
3493         GtkWidget *widget;
3494
3495         if (view->cursor == new_cursor) {
3496                 return;
3497         }
3498
3499         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
3500         display = gtk_widget_get_display (widget);
3501         view->cursor = new_cursor;
3502
3503         switch (new_cursor) {
3504                 case EV_VIEW_CURSOR_NORMAL:
3505                         gdk_window_set_cursor (widget->window, NULL);
3506                         break;
3507                 case EV_VIEW_CURSOR_IBEAM:
3508                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
3509                         break;
3510                 case EV_VIEW_CURSOR_LINK:
3511                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
3512                         break;
3513                 case EV_VIEW_CURSOR_WAIT:
3514                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
3515                         break;
3516                 case EV_VIEW_CURSOR_HIDDEN:
3517                         cursor = ev_view_create_invisible_cursor ();
3518                         break;
3519                 case EV_VIEW_CURSOR_DRAG:
3520                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
3521                         break;
3522         }
3523
3524         if (cursor) {
3525                 gdk_window_set_cursor (widget->window, cursor);
3526                 gdk_cursor_unref (cursor);
3527                 gdk_flush();
3528         }
3529 }
3530
3531 void
3532 ev_view_hide_cursor (EvView *view)
3533 {
3534        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
3535 }
3536
3537 void
3538 ev_view_show_cursor (EvView *view)
3539 {
3540        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3541 }
3542
3543 /*** Enum description for usage in signal ***/
3544
3545 GType
3546 ev_sizing_mode_get_type (void)
3547 {
3548   static GType etype = 0;
3549   if (etype == 0) {
3550     static const GEnumValue values[] = {
3551       { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" },
3552       { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" },
3553       { EV_SIZING_FREE, "EV_SIZING_FREE", "free" },
3554       { 0, NULL, NULL }
3555     };
3556     etype = g_enum_register_static ("EvSizingMode", values);
3557   }
3558   return etype;
3559 }
3560