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
4 * Copyright (C) 2004 Red Hat, Inc
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.
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.
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.
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>
30 #include "ev-marshal.h"
32 #include "ev-document-find.h"
33 #include "ev-document-misc.h"
35 #include "ev-job-queue.h"
36 #include "ev-page-cache.h"
37 #include "ev-pixbuf-cache.h"
39 #define EV_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
40 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
41 #define EV_VIEW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
54 TARGET_TEXT_BUFFER_CONTENTS
58 EV_SCROLL_PAGE_FORWARD,
59 EV_SCROLL_PAGE_BACKWARD
62 static const GtkTargetEntry targets[] = {
63 { "STRING", 0, TARGET_STRING },
64 { "TEXT", 0, TARGET_TEXT },
65 { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
66 { "UTF8_STRING", 0, TARGET_UTF8_STRING },
70 EV_VIEW_CURSOR_NORMAL,
76 #define ZOOM_IN_FACTOR 1.2
77 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
79 #define MIN_SCALE 0.05409
80 #define MAX_SCALE 18.4884
83 GtkWidget parent_instance;
87 GdkWindow *bin_window;
95 gboolean pressed_button;
96 gboolean has_selection;
97 GdkPoint selection_start;
98 EvRectangle selection;
101 GtkAdjustment *hadjustment;
102 GtkAdjustment *vadjustment;
104 EvPageCache *page_cache;
105 EvPixbufCache *pixbuf_cache;
108 EvJobRender *current_job;
119 struct _EvViewClass {
120 GtkWidgetClass parent_class;
122 void (*set_scroll_adjustments) (EvView *view,
123 GtkAdjustment *hadjustment,
124 GtkAdjustment *vadjustment);
125 void (*scroll_view) (EvView *view,
126 GtkScrollType scroll,
127 gboolean horizontal);
132 static void ev_view_set_scroll_adjustments (EvView *view,
133 GtkAdjustment *hadjustment,
134 GtkAdjustment *vadjustment);
136 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
138 /*** Helper functions ***/
141 view_update_adjustments (EvView *view)
143 int old_x = view->scroll_x;
144 int old_y = view->scroll_y;
146 if (view->hadjustment)
147 view->scroll_x = view->hadjustment->value;
151 if (view->vadjustment)
152 view->scroll_y = view->vadjustment->value;
156 if (GTK_WIDGET_REALIZED (view) &&
157 (view->scroll_x != old_x || view->scroll_y != old_y)) {
158 gdk_window_move (view->bin_window, - view->scroll_x, - view->scroll_y);
159 gdk_window_process_updates (view->bin_window, TRUE);
164 view_set_adjustment_values (EvView *view,
165 GtkOrientation orientation)
167 GtkWidget *widget = GTK_WIDGET (view);
168 GtkAdjustment *adjustment;
169 gboolean value_changed = FALSE;
173 if (orientation == GTK_ORIENTATION_HORIZONTAL) {
174 requisition = widget->requisition.width;
175 allocation = widget->allocation.width;
176 adjustment = view->hadjustment;
178 requisition = widget->requisition.height;
179 allocation = widget->allocation.height;
180 adjustment = view->vadjustment;
186 adjustment->page_size = allocation;
187 adjustment->step_increment = allocation * 0.1;
188 adjustment->page_increment = allocation * 0.9;
189 adjustment->lower = 0;
190 adjustment->upper = MAX (allocation, requisition);
192 if (adjustment->value > adjustment->upper - adjustment->page_size) {
193 adjustment->value = adjustment->upper - adjustment->page_size;
194 value_changed = TRUE;
197 gtk_adjustment_changed (adjustment);
199 gtk_adjustment_value_changed (adjustment);
202 /*** Virtual function implementations ***/
205 ev_view_finalize (GObject *object)
207 EvView *view = EV_VIEW (object);
212 ev_view_set_scroll_adjustments (view, NULL, NULL);
214 G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
218 ev_view_destroy (GtkObject *object)
220 EvView *view = EV_VIEW (object);
222 if (view->document) {
223 g_object_unref (view->document);
224 view->document = NULL;
226 if (view->pixbuf_cache) {
227 g_object_unref (view->pixbuf_cache);
228 view->pixbuf_cache = NULL;
230 ev_view_set_scroll_adjustments (view, NULL, NULL);
232 GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
236 ev_view_get_offsets (EvView *view, int *x_offset, int *y_offset)
238 EvDocument *document = view->document;
239 GtkWidget *widget = GTK_WIDGET (view);
240 int width, height, target_width, target_height;
243 g_return_if_fail (EV_IS_DOCUMENT (document));
245 ev_page_cache_get_size (view->page_cache,
250 ev_document_misc_get_page_border_size (width, height, &border);
252 *x_offset = view->spacing;
253 *y_offset = view->spacing;
254 target_width = width + border.left + border.right + view->spacing * 2;
255 target_height = height + border.top + border.bottom + view->spacing * 2;
256 *x_offset += MAX (0, (widget->allocation.width - target_width) / 2);
257 *y_offset += MAX (0, (widget->allocation.height - target_height) / 2);
261 view_rect_to_doc_rect (EvView *view, GdkRectangle *view_rect, EvRectangle *doc_rect)
263 int x_offset, y_offset;
265 ev_view_get_offsets (view, &x_offset, &y_offset);
266 doc_rect->x1 = (double) (view_rect->x - x_offset) / view->scale;
267 doc_rect->y1 = (double) (view_rect->y - y_offset) / view->scale;
268 doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
269 doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
273 doc_rect_to_view_rect (EvView *view, EvRectangle *doc_rect, GdkRectangle *view_rect)
275 int x_offset, y_offset;
277 ev_view_get_offsets (view, &x_offset, &y_offset);
278 view_rect->x = floor (doc_rect->x1 * view->scale) + x_offset;
279 view_rect->y = floor (doc_rect->y1 * view->scale) + y_offset;
280 view_rect->width = ceil (doc_rect->x2 * view->scale) + x_offset - view_rect->x;
281 view_rect->height = ceil (doc_rect->y2 * view->scale) + y_offset - view_rect->y;
285 /* Called by size_request to make sure we have appropriate jobs running.
288 ev_view_size_request (GtkWidget *widget,
289 GtkRequisition *requisition)
291 EvView *view = EV_VIEW (widget);
295 if (!GTK_WIDGET_REALIZED (widget))
298 if (!view->document) {
299 requisition->width = 1;
300 requisition->height = 1;
304 ev_page_cache_get_size (view->page_cache,
309 ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
313 ev_document_misc_get_page_border_size (width, height, &border);
315 if (view->width >= 0) {
316 requisition->width = 0;
318 requisition->width = width + border.left + border.right +
322 if (view->height >= 0) {
323 requisition->height = 0;
325 requisition->height = height + border.top + border.bottom +
331 ev_view_size_allocate (GtkWidget *widget,
332 GtkAllocation *allocation)
334 EvView *view = EV_VIEW (widget);
336 GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
338 view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
339 view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
341 if (GTK_WIDGET_REALIZED (widget)) {
342 gdk_window_resize (view->bin_window,
343 MAX (widget->allocation.width, widget->requisition.width),
344 MAX (widget->allocation.height, widget->requisition.height));
349 ev_view_realize (GtkWidget *widget)
351 EvView *view = EV_VIEW (widget);
352 GdkWindowAttr attributes;
354 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
357 attributes.window_type = GDK_WINDOW_CHILD;
358 attributes.wclass = GDK_INPUT_OUTPUT;
359 attributes.visual = gtk_widget_get_visual (widget);
360 attributes.colormap = gtk_widget_get_colormap (widget);
362 attributes.x = widget->allocation.x;
363 attributes.y = widget->allocation.y;
364 attributes.width = widget->allocation.width;
365 attributes.height = widget->allocation.height;
366 attributes.event_mask = 0;
368 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
370 GDK_WA_X | GDK_WA_Y |
373 gdk_window_set_user_data (widget->window, widget);
374 widget->style = gtk_style_attach (widget->style, widget->window);
375 gdk_window_set_background (widget->window, &widget->style->mid[widget->state]);
379 attributes.width = MAX (widget->allocation.width, widget->requisition.width);
380 attributes.height = MAX (widget->allocation.height, widget->requisition.height);
381 attributes.event_mask = GDK_EXPOSURE_MASK |
382 GDK_BUTTON_PRESS_MASK |
383 GDK_BUTTON_RELEASE_MASK |
386 GDK_POINTER_MOTION_MASK |
387 GDK_LEAVE_NOTIFY_MASK;
389 view->bin_window = gdk_window_new (widget->window,
391 GDK_WA_X | GDK_WA_Y |
394 gdk_window_set_user_data (view->bin_window, widget);
395 gdk_window_show (view->bin_window);
397 widget->style = gtk_style_attach (widget->style, view->bin_window);
398 gdk_window_set_background (view->bin_window, &widget->style->mid[widget->state]);
400 if (view->document) {
401 /* We can't get page size without a target, so we have to
402 * queue a size request at realization. Could be fixed
403 * with EvDocument changes to allow setting a GdkScreen
404 * without setting a target.
406 gtk_widget_queue_resize (widget);
411 ev_view_unrealize (GtkWidget *widget)
413 EvView *view = EV_VIEW (widget);
415 gdk_window_set_user_data (view->bin_window, NULL);
416 gdk_window_destroy (view->bin_window);
417 view->bin_window = NULL;
419 GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget);
423 ev_gdk_color_to_rgb (const GdkColor *color)
426 result = (0xff0000 | (color->red & 0xff00));
428 result |= ((color->green & 0xff00) | (color->blue >> 8));
433 draw_rubberband (GtkWidget *widget, GdkWindow *window,
434 const GdkRectangle *rect, guchar alpha)
438 GdkColor *fill_color_gdk;
441 fill_color_gdk = gdk_color_copy (>K_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
442 fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
444 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
445 rect->width, rect->height);
446 gdk_pixbuf_fill (pixbuf, fill_color);
448 gdk_draw_pixbuf (window, NULL, pixbuf,
451 rect->width, rect->height,
455 g_object_unref (pixbuf);
457 gc = gdk_gc_new (window);
458 gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
459 gdk_draw_rectangle (window, gc, FALSE,
465 gdk_color_free (fill_color_gdk);
469 highlight_find_results (EvView *view)
471 EvDocumentFind *find;
474 g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
476 find = EV_DOCUMENT_FIND (view->document);
478 g_mutex_lock (EV_DOC_MUTEX);
479 results = ev_document_find_get_n_results (find, view->current_page);
480 g_mutex_unlock (EV_DOC_MUTEX);
482 for (i = 0; i < results; i++) {
483 EvRectangle rectangle;
484 GdkRectangle view_rectangle;
487 alpha = (i == view->find_result) ? 0x90 : 0x20;
488 g_mutex_lock (EV_DOC_MUTEX);
489 ev_document_find_get_result (find, view->current_page,
491 g_mutex_unlock (EV_DOC_MUTEX);
492 doc_rect_to_view_rect (view, &rectangle, &view_rectangle);
493 draw_rubberband (GTK_WIDGET (view), view->bin_window,
494 &view_rectangle, alpha);
500 expose_bin_window (GtkWidget *widget,
501 GdkEventExpose *event)
503 EvView *view = EV_VIEW (widget);
507 int x_offset, y_offset;
508 GdkPixbuf *scaled_image;
509 GdkPixbuf *current_pixbuf;
511 if (view->document == NULL)
514 ev_view_get_offsets (view, &x_offset, &y_offset);
515 ev_page_cache_get_size (view->page_cache,
520 ev_document_misc_get_page_border_size (width, height, &border);
522 /* Paint the frame */
525 area.width = width + border.left + border.right;
526 area.height = height + border.top + border.bottom;
527 ev_document_misc_paint_one_page (view->bin_window, widget, &area, &border);
529 /* Render the document itself */
530 LOG ("Render area %d %d %d %d - Offset %d %d",
531 event->area.x, event->area.y,
532 event->area.width, event->area.height,
535 current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, view->current_page);
537 if (current_pixbuf == NULL)
539 else if (width == gdk_pixbuf_get_width (current_pixbuf) &&
540 height == gdk_pixbuf_get_height (current_pixbuf))
541 scaled_image = g_object_ref (current_pixbuf);
543 scaled_image = gdk_pixbuf_scale_simple (current_pixbuf,
547 gdk_draw_pixbuf (view->bin_window,
548 GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL],
551 area.x + border.left,
554 GDK_RGB_DITHER_NORMAL,
556 g_object_unref (scaled_image);
559 if (EV_IS_DOCUMENT_FIND (view->document)) {
560 highlight_find_results (view);
563 if (view->has_selection) {
564 GdkRectangle rubberband;
566 doc_rect_to_view_rect (view, &view->selection, &rubberband);
567 if (rubberband.width > 0 && rubberband.height > 0) {
568 draw_rubberband (widget, view->bin_window,
575 ev_view_expose_event (GtkWidget *widget,
576 GdkEventExpose *event)
578 EvView *view = EV_VIEW (widget);
580 if (event->window == view->bin_window)
581 expose_bin_window (widget, event);
583 return GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event (widget, event);
589 ev_view_select_all (EvView *ev_view)
591 GtkWidget *widget = GTK_WIDGET (ev_view);
592 GdkRectangle selection;
594 int x_offset, y_offset;
597 g_return_if_fail (EV_IS_VIEW (ev_view));
600 ev_view_get_offsets (ev_view, &x_offset, &y_offset);
601 ev_page_cache_get_size (ev_view->page_cache,
602 ev_view->current_page,
605 ev_document_misc_get_page_border_size (width, height, &border);
607 ev_view->has_selection = TRUE;
608 selection.x = x_offset + border.left;
609 selection.y = y_offset + border.top;
610 selection.width = width;
611 selection.height = height;
612 view_rect_to_doc_rect (ev_view, &selection, &ev_view->selection);
614 gtk_widget_queue_draw (widget);
618 ev_view_copy (EvView *ev_view)
620 GtkClipboard *clipboard;
623 g_mutex_lock (EV_DOC_MUTEX);
624 text = ev_document_get_text (ev_view->document,
625 ev_view->current_page,
626 &ev_view->selection);
627 g_mutex_unlock (EV_DOC_MUTEX);
629 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
630 GDK_SELECTION_CLIPBOARD);
631 gtk_clipboard_set_text (clipboard, text, -1);
636 ev_view_primary_get_cb (GtkClipboard *clipboard,
637 GtkSelectionData *selection_data,
641 EvView *ev_view = EV_VIEW (data);
644 g_mutex_lock (EV_DOC_MUTEX);
645 text = ev_document_get_text (ev_view->document,
646 ev_view->current_page,
647 &ev_view->selection);
648 g_mutex_unlock (EV_DOC_MUTEX);
649 gtk_selection_data_set_text (selection_data, text, -1);
653 ev_view_primary_clear_cb (GtkClipboard *clipboard,
656 EvView *ev_view = EV_VIEW (data);
658 ev_view->has_selection = FALSE;
662 ev_view_update_primary_selection (EvView *ev_view)
664 GtkClipboard *clipboard;
666 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
667 GDK_SELECTION_PRIMARY);
669 if (ev_view->has_selection) {
670 if (!gtk_clipboard_set_with_owner (clipboard,
672 G_N_ELEMENTS (targets),
673 ev_view_primary_get_cb,
674 ev_view_primary_clear_cb,
676 ev_view_primary_clear_cb (clipboard, ev_view);
678 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
679 gtk_clipboard_clear (clipboard);
684 ev_view_button_press_event (GtkWidget *widget,
685 GdkEventButton *event)
687 EvView *view = EV_VIEW (widget);
689 if (!GTK_WIDGET_HAS_FOCUS (widget)) {
690 gtk_widget_grab_focus (widget);
693 view->pressed_button = event->button;
695 switch (event->button) {
697 if (view->has_selection) {
698 view->has_selection = FALSE;
699 gtk_widget_queue_draw (widget);
702 view->selection_start.x = event->x;
703 view->selection_start.y = event->y;
711 status_message_from_link (EvView *view, EvLink *link)
717 type = ev_link_get_link_type (link);
720 case EV_LINK_TYPE_TITLE:
721 if (ev_link_get_title (link))
722 msg = g_strdup (ev_link_get_title (link));
724 case EV_LINK_TYPE_PAGE:
725 page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link));
726 msg = g_strdup_printf (_("Go to page %s"), page_label);
729 case EV_LINK_TYPE_EXTERNAL_URI:
730 msg = g_strdup (ev_link_get_uri (link));
740 ev_view_set_status (EvView *view, const char *message)
742 g_return_if_fail (EV_IS_VIEW (view));
744 if (message != view->status) {
745 g_free (view->status);
746 view->status = g_strdup (message);
747 g_object_notify (G_OBJECT (view), "status");
752 ev_view_set_find_status (EvView *view, const char *message)
754 g_return_if_fail (EV_IS_VIEW (view));
756 g_free (view->find_status);
757 view->find_status = g_strdup (message);
758 g_object_notify (G_OBJECT (view), "find-status");
762 ev_view_create_invisible_cursor(void)
765 GdkColor black = { 0, 0, 0, 0 };
766 static char bits[] = { 0x00 };
768 empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
770 return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
774 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
776 GdkCursor *cursor = NULL;
780 if (view->cursor == new_cursor) {
784 widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
785 display = gtk_widget_get_display (widget);
786 view->cursor = new_cursor;
788 switch (new_cursor) {
789 case EV_VIEW_CURSOR_NORMAL:
790 gdk_window_set_cursor (widget->window, NULL);
792 case EV_VIEW_CURSOR_LINK:
793 cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
795 case EV_VIEW_CURSOR_WAIT:
796 cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
798 case EV_VIEW_CURSOR_HIDDEN:
799 cursor = ev_view_create_invisible_cursor ();
805 gdk_window_set_cursor (widget->window, cursor);
806 gdk_cursor_unref (cursor);
813 find_page_at_location (EvView *view,
823 ev_page_cache_get_size (view->page_cache,
827 ev_document_misc_get_page_border_size (width, height, &border);
829 x -= (border.left + view->spacing);
830 y -= (border.top + view->spacing);
832 if ((x < 0) || (y < 0) ||
833 (x >= width) || (y >= height)) {
837 *page = view->current_page;
838 *x_offset = (gint) x;
839 *y_offset = (gint) y;
843 get_link_at_location (EvView *view,
848 gint x_offset, y_offset;
851 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
855 link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page);
857 return ev_link_mapping_find (link_mapping, x_offset /view->scale, y_offset /view->scale);
862 ev_view_motion_notify_event (GtkWidget *widget,
863 GdkEventMotion *event)
865 EvView *view = EV_VIEW (widget);
867 if (view->pressed_button > 0) {
868 GdkRectangle selection;
870 view->has_selection = TRUE;
871 selection.x = MIN (view->selection_start.x, event->x);
872 selection.y = MIN (view->selection_start.y, event->y);
873 selection.width = ABS (view->selection_start.x - event->x) + 1;
874 selection.height = ABS (view->selection_start.y - event->y) + 1;
875 view_rect_to_doc_rect (view, &selection, &view->selection);
877 gtk_widget_queue_draw (widget);
878 } else if (view->document) {
881 link = get_link_at_location (view, event->x, event->y);
885 msg = status_message_from_link (view, link);
886 ev_view_set_status (view, msg);
887 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
890 ev_view_set_status (view, NULL);
891 if (view->cursor == EV_VIEW_CURSOR_LINK) {
892 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
901 ev_view_button_release_event (GtkWidget *widget,
902 GdkEventButton *event)
904 EvView *view = EV_VIEW (widget);
906 view->pressed_button = -1;
908 if (view->has_selection) {
909 ev_view_update_primary_selection (view);
910 } else if (view->document) {
913 link = get_link_at_location (view, event->x, event->y);
915 ev_view_go_to_link (view, link);
923 on_adjustment_value_changed (GtkAdjustment *adjustment,
926 view_update_adjustments (view);
930 set_scroll_adjustment (EvView *view,
931 GtkOrientation orientation,
932 GtkAdjustment *adjustment)
934 GtkAdjustment **to_set;
936 if (orientation == GTK_ORIENTATION_HORIZONTAL)
937 to_set = &view->hadjustment;
939 to_set = &view->vadjustment;
941 if (*to_set != adjustment) {
943 g_signal_handlers_disconnect_by_func (*to_set,
944 (gpointer) on_adjustment_value_changed,
946 g_object_unref (*to_set);
949 *to_set = adjustment;
950 view_set_adjustment_values (view, orientation);
953 g_object_ref (*to_set);
954 g_signal_connect (*to_set, "value_changed",
955 G_CALLBACK (on_adjustment_value_changed), view);
961 ev_view_set_scroll_adjustments (EvView *view,
962 GtkAdjustment *hadjustment,
963 GtkAdjustment *vadjustment)
965 set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
966 set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
968 view_update_adjustments (view);
972 add_scroll_binding (GtkBindingSet *binding_set,
974 GtkScrollType scroll,
977 guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
979 gtk_binding_entry_add_signal (binding_set, keyval, 0,
981 GTK_TYPE_SCROLL_TYPE, scroll,
982 G_TYPE_BOOLEAN, horizontal);
983 gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
985 GTK_TYPE_SCROLL_TYPE, scroll,
986 G_TYPE_BOOLEAN, horizontal);
990 ev_view_jump (EvView *view,
991 GtkScrollType scroll)
993 GtkAdjustment *adjustment;
994 double value, increment;
995 gboolean first_page = FALSE;
996 gboolean last_page = FALSE;
998 /* Assign values for increment and vertical adjustment */
999 adjustment = view->vadjustment;
1000 increment = adjustment->page_size * 0.75;
1001 value = adjustment->value;
1003 /* Assign boolean for first and last page */
1004 if (view->current_page == 0)
1006 if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1)
1010 case EV_SCROLL_PAGE_BACKWARD:
1011 /* Do not jump backwards if at the first page */
1012 if (value == (adjustment->lower) && first_page) {
1014 /* At the top of a page, assign the upper bound limit of previous page */
1015 } else if (value == (adjustment->lower)) {
1016 value = adjustment->upper - adjustment->page_size;
1017 ev_page_cache_set_current_page (view->page_cache, view->current_page - 1);
1018 /* Jump to the top */
1020 value = MAX (value - increment, adjustment->lower);
1023 case EV_SCROLL_PAGE_FORWARD:
1024 /* Do not jump forward if at the last page */
1025 if (value == (adjustment->upper - adjustment->page_size) && last_page) {
1027 /* At the bottom of a page, assign the lower bound limit of next page */
1028 } else if (value == (adjustment->upper - adjustment->page_size)) {
1030 ev_page_cache_set_current_page (view->page_cache, view->current_page + 1);
1031 /* Jump to the bottom */
1033 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
1040 gtk_adjustment_set_value (adjustment, value);
1044 ev_view_scroll_view (EvView *view,
1045 GtkScrollType scroll,
1046 gboolean horizontal)
1048 if (scroll == GTK_SCROLL_PAGE_BACKWARD) {
1049 ev_page_cache_prev_page (view->page_cache);
1050 } else if (scroll == GTK_SCROLL_PAGE_FORWARD) {
1051 ev_page_cache_next_page (view->page_cache);
1052 } else if (scroll == EV_SCROLL_PAGE_BACKWARD || scroll == EV_SCROLL_PAGE_FORWARD) {
1053 ev_view_jump (view, scroll);
1055 GtkAdjustment *adjustment;
1059 adjustment = view->hadjustment;
1061 adjustment = view->vadjustment;
1064 value = adjustment->value;
1067 case GTK_SCROLL_STEP_BACKWARD:
1068 value -= adjustment->step_increment;
1070 case GTK_SCROLL_STEP_FORWARD:
1071 value += adjustment->step_increment;
1077 value = CLAMP (value, adjustment->lower,
1078 adjustment->upper - adjustment->page_size);
1080 gtk_adjustment_set_value (adjustment, value);
1085 ev_view_set_property (GObject *object,
1087 const GValue *value,
1094 case PROP_FIND_STATUS:
1100 ev_view_get_property (GObject *object,
1105 EvView *view = EV_VIEW (object);
1110 g_value_set_string (value, view->status);
1112 case PROP_FIND_STATUS:
1113 g_value_set_string (value, view->status);
1119 ev_view_class_init (EvViewClass *class)
1121 GObjectClass *object_class = G_OBJECT_CLASS (class);
1122 GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
1123 GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
1124 GtkBindingSet *binding_set;
1126 object_class->finalize = ev_view_finalize;
1127 object_class->set_property = ev_view_set_property;
1128 object_class->get_property = ev_view_get_property;
1130 widget_class->expose_event = ev_view_expose_event;
1131 widget_class->button_press_event = ev_view_button_press_event;
1132 widget_class->motion_notify_event = ev_view_motion_notify_event;
1133 widget_class->button_release_event = ev_view_button_release_event;
1134 widget_class->size_request = ev_view_size_request;
1135 widget_class->size_allocate = ev_view_size_allocate;
1136 widget_class->realize = ev_view_realize;
1137 widget_class->unrealize = ev_view_unrealize;
1138 gtk_object_class->destroy = ev_view_destroy;
1140 class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
1141 class->scroll_view = ev_view_scroll_view;
1143 widget_class->set_scroll_adjustments_signal = g_signal_new ("set-scroll-adjustments",
1144 G_OBJECT_CLASS_TYPE (object_class),
1145 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1146 G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
1148 ev_marshal_VOID__OBJECT_OBJECT,
1150 GTK_TYPE_ADJUSTMENT,
1151 GTK_TYPE_ADJUSTMENT);
1153 g_signal_new ("scroll_view",
1154 G_TYPE_FROM_CLASS (object_class),
1155 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1156 G_STRUCT_OFFSET (EvViewClass, scroll_view),
1158 ev_marshal_VOID__ENUM_BOOLEAN,
1160 GTK_TYPE_SCROLL_TYPE,
1163 g_object_class_install_property (object_class,
1165 g_param_spec_string ("status",
1167 "The status message",
1171 g_object_class_install_property (object_class,
1173 g_param_spec_string ("find-status",
1174 "Find Status Message",
1175 "The find status message",
1179 binding_set = gtk_binding_set_by_class (class);
1181 add_scroll_binding (binding_set, GDK_Left, GTK_SCROLL_STEP_BACKWARD, TRUE);
1182 add_scroll_binding (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD, TRUE);
1183 add_scroll_binding (binding_set, GDK_Up, GTK_SCROLL_STEP_BACKWARD, FALSE);
1184 add_scroll_binding (binding_set, GDK_Down, GTK_SCROLL_STEP_FORWARD, FALSE);
1186 add_scroll_binding (binding_set, GDK_Page_Up, GTK_SCROLL_PAGE_BACKWARD, FALSE);
1187 add_scroll_binding (binding_set, GDK_Page_Down, GTK_SCROLL_PAGE_FORWARD, FALSE);
1189 add_scroll_binding (binding_set, GDK_space, EV_SCROLL_PAGE_FORWARD, FALSE);
1190 add_scroll_binding (binding_set, GDK_BackSpace, EV_SCROLL_PAGE_BACKWARD, FALSE);
1194 ev_view_init (EvView *view)
1196 GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
1200 view->current_page = 0;
1201 view->pressed_button = -1;
1202 view->cursor = EV_VIEW_CURSOR_NORMAL;
1206 update_find_status_message (EvView *view)
1210 // g_mutex_lock (EV_DOC_MUTEX);
1211 if (view->current_page == view->find_page) {
1214 // g_mutex_lock (EV_DOC_MUTEX);
1215 results = ev_document_find_get_n_results
1216 (EV_DOCUMENT_FIND (view->document),
1217 view->current_page);
1218 // g_mutex_unlock (EV_DOC_MUTEX);
1219 /* TRANS: Sometimes this could be better translated as
1220 "%d hit(s) on this page". Therefore this string
1221 contains plural cases. */
1222 message = g_strdup_printf (ngettext ("%d found on this page",
1223 "%d found on this page",
1229 g_mutex_lock (EV_DOC_MUTEX);
1230 percent = ev_document_find_get_progress
1231 (EV_DOCUMENT_FIND (view->document));
1232 g_mutex_unlock (EV_DOC_MUTEX);
1233 if (percent >= (1.0 - 1e-10)) {
1234 message = g_strdup (_("Not found"));
1236 message = g_strdup_printf (_("%3d%% remaining to search"),
1237 (int) ((1.0 - percent) * 100));
1241 // g_mutex_unlock (EV_DOC_MUTEX);
1243 ev_view_set_find_status (view, message);
1244 // g_free (message);
1250 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
1252 GtkWidget *widget = GTK_WIDGET (view);
1253 GtkAdjustment *adjustment;
1256 adjustment = view->vadjustment;
1258 if (rect->y < adjustment->value) {
1259 value = MAX (adjustment->lower, rect->y - MARGIN);
1260 gtk_adjustment_set_value (view->vadjustment, value);
1261 } else if (rect->y + rect->height >
1262 adjustment->value + widget->allocation.height) {
1263 value = MIN (adjustment->upper, rect->y + rect->height -
1264 widget->allocation.height + MARGIN);
1265 gtk_adjustment_set_value (view->vadjustment, value);
1268 adjustment = view->hadjustment;
1270 if (rect->x < adjustment->value) {
1271 value = MAX (adjustment->lower, rect->x - MARGIN);
1272 gtk_adjustment_set_value (view->hadjustment, value);
1273 } else if (rect->x + rect->height >
1274 adjustment->value + widget->allocation.width) {
1275 value = MIN (adjustment->upper, rect->x + rect->width -
1276 widget->allocation.width + MARGIN);
1277 gtk_adjustment_set_value (view->hadjustment, value);
1282 jump_to_find_result (EvView *view)
1284 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1286 GdkRectangle view_rect;
1289 g_mutex_lock (EV_DOC_MUTEX);
1290 n_results = ev_document_find_get_n_results (find, view->current_page);
1291 g_mutex_unlock (EV_DOC_MUTEX);
1293 if (n_results > view->find_result) {
1294 g_mutex_lock (EV_DOC_MUTEX);
1295 ev_document_find_get_result
1296 (find, view->current_page, view->find_result, &rect);
1297 g_mutex_unlock (EV_DOC_MUTEX);
1299 doc_rect_to_view_rect (view, &rect, &view_rect);
1300 ensure_rectangle_is_visible (view, &view_rect);
1305 jump_to_find_page (EvView *view)
1309 n_pages = ev_page_cache_get_n_pages (view->page_cache);
1311 for (i = 0; i < n_pages; i++) {
1315 page = i + view->find_page;
1316 if (page >= n_pages) {
1317 page = page - n_pages;
1320 // g_mutex_lock (EV_DOC_MUTEX);
1321 has_results = ev_document_find_page_has_results
1322 (EV_DOCUMENT_FIND (view->document), page);
1323 if (has_results == -1) {
1324 view->find_page = page;
1326 } else if (has_results == 1) {
1327 ev_page_cache_set_current_page (view->page_cache, page);
1328 jump_to_find_result (view);
1335 find_changed_cb (EvDocument *document, int page, EvView *view)
1337 jump_to_find_page (view);
1338 jump_to_find_result (view);
1339 update_find_status_message (view);
1341 if (view->current_page == page)
1342 gtk_widget_queue_draw (GTK_WIDGET (view));
1344 /*** Public API ***/
1349 return g_object_new (EV_TYPE_VIEW, NULL);
1353 job_finished_cb (EvPixbufCache *pixbuf_cache,
1356 gtk_widget_queue_draw (GTK_WIDGET (view));
1361 page_changed_cb (EvPageCache *page_cache,
1365 int old_page = view->current_page;
1366 int old_width, old_height;
1367 int new_width, new_height;
1369 if (old_page == new_page)
1372 ev_page_cache_get_size (page_cache,
1375 &old_width, &old_height);
1376 ev_page_cache_get_size (page_cache,
1379 &new_width, &new_height);
1381 if (view->cursor != EV_VIEW_CURSOR_HIDDEN) {
1382 //ev_view_set_cursor (view, EV_VIEW_CURSOR_WAIT);
1385 view->current_page = new_page;
1386 view->has_selection = FALSE;
1388 ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
1393 if (new_width != old_width || new_height != old_height)
1394 gtk_widget_queue_resize (GTK_WIDGET (view));
1396 gtk_widget_queue_draw (GTK_WIDGET (view));
1398 gtk_adjustment_set_value (view->vadjustment,
1399 view->vadjustment->lower);
1401 if (EV_IS_DOCUMENT_FIND (view->document)) {
1402 view->find_page = new_page;
1403 view->find_result = 0;
1404 update_find_status_message (view);
1409 ev_view_set_document (EvView *view,
1410 EvDocument *document)
1412 g_return_if_fail (EV_IS_VIEW (view));
1414 if (document != view->document) {
1415 if (view->document) {
1416 g_signal_handlers_disconnect_by_func (view->document,
1419 g_object_unref (view->document);
1420 view->page_cache = NULL;
1424 view->document = document;
1425 view->find_page = 0;
1426 view->find_result = 0;
1428 if (view->document) {
1429 g_object_ref (view->document);
1430 if (EV_IS_DOCUMENT_FIND (view->document)) {
1431 g_signal_connect (view->document,
1433 G_CALLBACK (find_changed_cb),
1436 view->page_cache = ev_document_get_page_cache (view->document);
1437 g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view);
1438 view->pixbuf_cache = ev_pixbuf_cache_new (view->document);
1439 g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
1442 gtk_widget_queue_resize (GTK_WIDGET (view));
1447 ev_view_get_page (EvView *view)
1449 return view->current_page;
1453 go_to_link (EvView *view, EvLink *link)
1459 type = ev_link_get_link_type (link);
1462 case EV_LINK_TYPE_TITLE:
1464 case EV_LINK_TYPE_PAGE:
1465 page = ev_link_get_page (link);
1466 ev_page_cache_set_current_page (view->page_cache, page);
1468 case EV_LINK_TYPE_EXTERNAL_URI:
1469 uri = ev_link_get_uri (link);
1470 gnome_vfs_url_show (uri);
1476 ev_view_go_to_link (EvView *view, EvLink *link)
1478 go_to_link (view, link);
1482 ev_view_zoom (EvView *view,
1489 scale = view->scale * factor;
1493 scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
1495 view->scale = scale;
1496 gtk_widget_queue_resize (GTK_WIDGET (view));
1500 ev_view_zoom_in (EvView *view)
1502 view->width = view->height = -1;
1503 ev_view_zoom (view, ZOOM_IN_FACTOR, TRUE);
1507 ev_view_zoom_out (EvView *view)
1509 view->width = view->height = -1;
1510 ev_view_zoom (view, ZOOM_OUT_FACTOR, TRUE);
1514 size_to_zoom_factor (EvView *view, int width, int height)
1516 int doc_width, doc_height;
1517 double scale, scale_w, scale_h;
1520 doc_width = doc_height = 0;
1521 scale = scale_w = scale_h = 1.0;
1522 ev_page_cache_get_size (view->page_cache,
1528 /* FIXME: The border size isn't constant. Ugh. Still, if we have extra
1529 * space, we just cut it from the border */
1530 ev_document_misc_get_page_border_size (doc_width, doc_height, &border);
1532 if (doc_width == 0 && doc_height == 0) {
1539 target_width = width - (view->spacing * 2 + border.left + border.right);
1540 scale = scale_w = (double)target_width * view->scale / doc_width;
1546 target_height = height - (view->spacing * 2 + border.top + border.bottom);
1547 scale = scale_h = (double)target_height * view->scale / doc_height;
1550 if (width >= 0 && height >= 0) {
1551 scale = (scale_w < scale_h) ? scale_w : scale_h;
1558 ev_view_set_size (EvView *view,
1564 if (!view->document)
1567 if (view->width != width ||
1568 view->height != height) {
1569 view->width = width;
1570 view->height = height;
1571 factor = size_to_zoom_factor (view, width, height);
1572 ev_view_zoom (view, factor, FALSE);
1573 gtk_widget_queue_resize (GTK_WIDGET (view));
1578 ev_view_get_status (EvView *view)
1580 g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1582 return view->status;
1586 ev_view_get_find_status (EvView *view)
1588 g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1590 return view->find_status;
1594 ev_view_can_find_next (EvView *view)
1598 if (EV_IS_DOCUMENT_FIND (view->document)) {
1599 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1601 g_mutex_lock (EV_DOC_MUTEX);
1602 n_results = ev_document_find_get_n_results (find, view->current_page);
1603 g_mutex_unlock (EV_DOC_MUTEX);
1606 return n_results > 0;
1610 ev_view_find_next (EvView *view)
1612 EvPageCache *page_cache;
1613 int n_results, n_pages;
1614 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1616 page_cache = ev_document_get_page_cache (view->document);
1617 g_mutex_lock (EV_DOC_MUTEX);
1618 n_results = ev_document_find_get_n_results (find, view->current_page);
1619 g_mutex_unlock (EV_DOC_MUTEX);
1621 n_pages = ev_page_cache_get_n_pages (page_cache);
1623 view->find_result++;
1625 if (view->find_result >= n_results) {
1626 view->find_result = 0;
1629 if (view->find_page >= n_pages) {
1630 view->find_page = 0;
1633 jump_to_find_page (view);
1635 jump_to_find_result (view);
1636 gtk_widget_queue_draw (GTK_WIDGET (view));
1641 ev_view_find_previous (EvView *view)
1643 int n_results, n_pages;
1644 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1645 EvPageCache *page_cache;
1647 page_cache = ev_document_get_page_cache (view->document);
1649 g_mutex_lock (EV_DOC_MUTEX);
1650 n_results = ev_document_find_get_n_results (find, view->current_page);
1651 g_mutex_unlock (EV_DOC_MUTEX);
1653 n_pages = ev_page_cache_get_n_pages (page_cache);
1655 view->find_result--;
1657 if (view->find_result < 0) {
1658 view->find_result = 0;
1661 if (view->find_page < 0) {
1662 view->find_page = n_pages - 1;
1665 jump_to_find_page (view);
1667 jump_to_find_result (view);
1668 gtk_widget_queue_draw (GTK_WIDGET (view));
1672 ev_view_hide_cursor (EvView *view)
1674 ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
1678 ev_view_show_cursor (EvView *view)
1680 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);