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.
21 #include <gtk/gtkalignment.h>
22 #include <glib/gi18n.h>
23 #include <gtk/gtkbindings.h>
24 #include <gtk/gtkselection.h>
25 #include <gtk/gtkclipboard.h>
26 #include <gdk/gdkkeysyms.h>
27 #include <libgnomevfs/gnome-vfs-utils.h>
29 #include "ev-marshal.h"
31 #include "ev-document-find.h"
32 #include "ev-document-misc.h"
35 #define EV_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
36 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
37 #define EV_VIEW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
50 TARGET_TEXT_BUFFER_CONTENTS
53 static const GtkTargetEntry targets[] = {
54 { "STRING", 0, TARGET_STRING },
55 { "TEXT", 0, TARGET_TEXT },
56 { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
57 { "UTF8_STRING", 0, TARGET_UTF8_STRING },
61 EV_VIEW_CURSOR_NORMAL,
67 #define ZOOM_IN_FACTOR 1.2
68 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
70 #define MIN_SCALE 0.05409
71 #define MAX_SCALE 18.4884
74 GtkWidget parent_instance;
78 GdkWindow *bin_window;
86 gboolean pressed_button;
87 gboolean has_selection;
88 GdkPoint selection_start;
89 GdkRectangle selection;
92 GtkAdjustment *hadjustment;
93 GtkAdjustment *vadjustment;
104 struct _EvViewClass {
105 GtkWidgetClass parent_class;
107 void (*set_scroll_adjustments) (EvView *view,
108 GtkAdjustment *hadjustment,
109 GtkAdjustment *vadjustment);
110 void (*scroll_view) (EvView *view,
111 GtkScrollType scroll,
112 gboolean horizontal);
114 /* Should this be notify::page? */
115 void (*page_changed) (EvView *view);
118 static guint page_changed_signal = 0;
120 static void ev_view_set_scroll_adjustments (EvView *view,
121 GtkAdjustment *hadjustment,
122 GtkAdjustment *vadjustment);
124 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
126 /*** Helper functions ***/
129 view_update_adjustments (EvView *view)
131 int old_x = view->scroll_x;
132 int old_y = view->scroll_y;
134 if (view->hadjustment)
135 view->scroll_x = view->hadjustment->value;
139 if (view->vadjustment)
140 view->scroll_y = view->vadjustment->value;
144 if (GTK_WIDGET_REALIZED (view) &&
145 (view->scroll_x != old_x || view->scroll_y != old_y)) {
146 gdk_window_move (view->bin_window, - view->scroll_x, - view->scroll_y);
147 gdk_window_process_updates (view->bin_window, TRUE);
152 view_set_adjustment_values (EvView *view,
153 GtkOrientation orientation)
155 GtkWidget *widget = GTK_WIDGET (view);
156 GtkAdjustment *adjustment;
157 gboolean value_changed = FALSE;
161 if (orientation == GTK_ORIENTATION_HORIZONTAL) {
162 requisition = widget->requisition.width;
163 allocation = widget->allocation.width;
164 adjustment = view->hadjustment;
166 requisition = widget->requisition.height;
167 allocation = widget->allocation.height;
168 adjustment = view->vadjustment;
174 adjustment->page_size = allocation;
175 adjustment->step_increment = allocation * 0.1;
176 adjustment->page_increment = allocation * 0.9;
177 adjustment->lower = 0;
178 adjustment->upper = MAX (allocation, requisition);
180 if (adjustment->value > adjustment->upper - adjustment->page_size) {
181 adjustment->value = adjustment->upper - adjustment->page_size;
182 value_changed = TRUE;
185 gtk_adjustment_changed (adjustment);
187 gtk_adjustment_value_changed (adjustment);
190 /*** Virtual function implementations ***/
193 ev_view_finalize (GObject *object)
195 EvView *view = EV_VIEW (object);
200 g_object_unref (view->document);
202 ev_view_set_scroll_adjustments (view, NULL, NULL);
204 G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
208 ev_view_destroy (GtkObject *object)
210 EvView *view = EV_VIEW (object);
212 ev_view_set_scroll_adjustments (view, NULL, NULL);
214 GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
218 ev_view_get_offsets (EvView *view, int *x_offset, int *y_offset)
220 EvDocument *document = view->document;
221 GtkWidget *widget = GTK_WIDGET (view);
222 int width, height, target_width, target_height;
225 g_return_if_fail (EV_IS_DOCUMENT (document));
227 ev_document_get_page_size (document, -1, &width, &height);
228 ev_document_misc_get_page_border_size (width, height, &border);
230 *x_offset = view->spacing;
231 *y_offset = view->spacing;
232 target_width = width + border.left + border.right + view->spacing * 2;
233 target_height = height + border.top + border.bottom + view->spacing * 2;
234 *x_offset += MAX (0, (widget->allocation.width - target_width) / 2);
235 *y_offset += MAX (0, (widget->allocation.height - target_height) / 2);
239 view_rect_to_doc_rect (EvView *view, GdkRectangle *view_rect, GdkRectangle *doc_rect)
241 int x_offset, y_offset;
243 ev_view_get_offsets (view, &x_offset, &y_offset);
244 doc_rect->x = (view_rect->x - x_offset) / view->scale;
245 doc_rect->y = (view_rect->y - y_offset) / view->scale;
246 doc_rect->width = view_rect->width / view->scale;
247 doc_rect->height = view_rect->height / view->scale;
251 doc_rect_to_view_rect (EvView *view, GdkRectangle *doc_rect, GdkRectangle *view_rect)
253 int x_offset, y_offset;
255 ev_view_get_offsets (view, &x_offset, &y_offset);
256 view_rect->x = doc_rect->x * view->scale + x_offset;
257 view_rect->y = doc_rect->y * view->scale + y_offset;
258 view_rect->width = doc_rect->width * view->scale;
259 view_rect->height = doc_rect->height * view->scale;
263 ev_view_size_request (GtkWidget *widget,
264 GtkRequisition *requisition)
266 EvView *view = EV_VIEW (widget);
270 if (!GTK_WIDGET_REALIZED (widget))
273 if (!view->document) {
274 requisition->width = 1;
275 requisition->height = 1;
279 ev_document_get_page_size (view->document, -1,
281 ev_document_misc_get_page_border_size (width, height, &border);
283 if (view->width >= 0) {
284 requisition->width = 0;
286 requisition->width = width + border.left + border.right +
290 if (view->height >= 0) {
291 requisition->height = 0;
293 requisition->height = height + border.top + border.bottom +
299 ev_view_size_allocate (GtkWidget *widget,
300 GtkAllocation *allocation)
302 EvView *view = EV_VIEW (widget);
304 GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
306 view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
307 view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
309 if (GTK_WIDGET_REALIZED (widget)) {
310 gdk_window_resize (view->bin_window,
311 MAX (widget->allocation.width, widget->requisition.width),
312 MAX (widget->allocation.height, widget->requisition.height));
317 ev_view_realize (GtkWidget *widget)
319 EvView *view = EV_VIEW (widget);
320 GdkWindowAttr attributes;
322 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
325 attributes.window_type = GDK_WINDOW_CHILD;
326 attributes.wclass = GDK_INPUT_OUTPUT;
327 attributes.visual = gtk_widget_get_visual (widget);
328 attributes.colormap = gtk_widget_get_colormap (widget);
330 attributes.x = widget->allocation.x;
331 attributes.y = widget->allocation.y;
332 attributes.width = widget->allocation.width;
333 attributes.height = widget->allocation.height;
334 attributes.event_mask = 0;
336 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
338 GDK_WA_X | GDK_WA_Y |
341 gdk_window_set_user_data (widget->window, widget);
342 widget->style = gtk_style_attach (widget->style, widget->window);
343 gdk_window_set_background (widget->window, &widget->style->mid[widget->state]);
347 attributes.width = MAX (widget->allocation.width, widget->requisition.width);
348 attributes.height = MAX (widget->allocation.height, widget->requisition.height);
349 attributes.event_mask = GDK_EXPOSURE_MASK |
350 GDK_BUTTON_PRESS_MASK |
351 GDK_BUTTON_RELEASE_MASK |
354 GDK_POINTER_MOTION_MASK |
355 GDK_LEAVE_NOTIFY_MASK;
357 view->bin_window = gdk_window_new (widget->window,
359 GDK_WA_X | GDK_WA_Y |
362 gdk_window_set_user_data (view->bin_window, widget);
363 gdk_window_show (view->bin_window);
365 widget->style = gtk_style_attach (widget->style, view->bin_window);
366 gdk_window_set_background (view->bin_window, &widget->style->mid[widget->state]);
368 if (view->document) {
369 ev_document_set_target (view->document, view->bin_window);
371 /* We can't get page size without a target, so we have to
372 * queue a size request at realization. Could be fixed
373 * with EvDocument changes to allow setting a GdkScreen
374 * without setting a target.
376 gtk_widget_queue_resize (widget);
381 ev_view_unrealize (GtkWidget *widget)
383 EvView *view = EV_VIEW (widget);
386 ev_document_set_target (view->document, NULL);
388 gdk_window_set_user_data (view->bin_window, NULL);
389 gdk_window_destroy (view->bin_window);
390 view->bin_window = NULL;
392 GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget);
396 ev_gdk_color_to_rgb (const GdkColor *color)
399 result = (0xff0000 | (color->red & 0xff00));
401 result |= ((color->green & 0xff00) | (color->blue >> 8));
406 draw_rubberband (GtkWidget *widget, GdkWindow *window,
407 const GdkRectangle *rect, guchar alpha)
411 GdkColor *fill_color_gdk;
414 fill_color_gdk = gdk_color_copy (>K_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
415 fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
417 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
418 rect->width, rect->height);
419 gdk_pixbuf_fill (pixbuf, fill_color);
421 gdk_draw_pixbuf (window, NULL, pixbuf,
424 rect->width, rect->height,
428 g_object_unref (pixbuf);
430 gc = gdk_gc_new (window);
431 gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
432 gdk_draw_rectangle (window, gc, FALSE,
438 gdk_color_free (fill_color_gdk);
442 highlight_find_results (EvView *view)
444 EvDocumentFind *find;
447 g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
449 find = EV_DOCUMENT_FIND (view->document);
451 results = ev_document_find_get_n_results (find);
453 for (i = 0; i < results; i++) {
454 GdkRectangle rectangle;
457 alpha = (i == view->find_result) ? 0x90 : 0x20;
458 ev_document_find_get_result (find, i, &rectangle);
459 draw_rubberband (GTK_WIDGET (view), view->bin_window,
466 expose_bin_window (GtkWidget *widget,
467 GdkEventExpose *event)
469 EvView *view = EV_VIEW (widget);
473 int x_offset, y_offset;
475 if (view->document == NULL)
478 ev_view_get_offsets (view, &x_offset, &y_offset);
479 ev_document_get_page_size (view->document, -1,
481 ev_document_misc_get_page_border_size (width, height, &border);
483 /* Paint the frame */
486 area.width = width + border.left + border.right;
487 area.height = height + border.top + border.bottom;
488 ev_document_misc_paint_one_page (view->bin_window, widget, &area, &border);
490 /* Render the document itself */
491 ev_document_set_page_offset (view->document,
492 x_offset + border.left,
493 y_offset + border.top);
495 LOG ("Render area %d %d %d %d - Offset %d %d",
496 event->area.x, event->area.y,
497 event->area.width, event->area.height,
500 ev_document_render (view->document,
501 event->area.x, event->area.y,
502 event->area.width, event->area.height);
504 if (EV_IS_DOCUMENT_FIND (view->document)) {
505 highlight_find_results (view);
508 if (view->has_selection) {
509 GdkRectangle rubberband;
511 doc_rect_to_view_rect (view, &view->selection, &rubberband);
512 if (rubberband.width > 0 && rubberband.height > 0) {
513 draw_rubberband (widget, view->bin_window,
520 ev_view_expose_event (GtkWidget *widget,
521 GdkEventExpose *event)
523 EvView *view = EV_VIEW (widget);
525 if (event->window == view->bin_window)
526 expose_bin_window (widget, event);
528 return GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event (widget, event);
534 ev_view_select_all (EvView *ev_view)
536 GtkWidget *widget = GTK_WIDGET (ev_view);
537 GdkRectangle selection;
539 int x_offset, y_offset;
542 g_return_if_fail (EV_IS_VIEW (ev_view));
544 ev_view_get_offsets (ev_view, &x_offset, &y_offset);
545 ev_document_get_page_size (ev_view->document, -1, &width, &height);
546 ev_document_misc_get_page_border_size (width, height, &border);
548 ev_view->has_selection = TRUE;
549 selection.x = x_offset + border.left;
550 selection.y = y_offset + border.top;
551 selection.width = width;
552 selection.height = height;
553 view_rect_to_doc_rect (ev_view, &selection, &ev_view->selection);
555 gtk_widget_queue_draw (widget);
559 ev_view_copy (EvView *ev_view)
561 GtkClipboard *clipboard;
562 GdkRectangle selection;
565 doc_rect_to_view_rect (ev_view, &ev_view->selection, &selection);
566 text = ev_document_get_text (ev_view->document, &selection);
567 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
568 GDK_SELECTION_CLIPBOARD);
569 gtk_clipboard_set_text (clipboard, text, -1);
574 ev_view_primary_get_cb (GtkClipboard *clipboard,
575 GtkSelectionData *selection_data,
579 EvView *ev_view = EV_VIEW (data);
580 GdkRectangle selection;
583 doc_rect_to_view_rect (ev_view, &ev_view->selection, &selection);
584 text = ev_document_get_text (ev_view->document, &selection);
585 gtk_selection_data_set_text (selection_data, text, -1);
589 ev_view_primary_clear_cb (GtkClipboard *clipboard,
592 EvView *ev_view = EV_VIEW (data);
594 ev_view->has_selection = FALSE;
598 ev_view_update_primary_selection (EvView *ev_view)
600 GtkClipboard *clipboard;
602 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
603 GDK_SELECTION_PRIMARY);
605 if (ev_view->has_selection) {
606 if (!gtk_clipboard_set_with_owner (clipboard,
608 G_N_ELEMENTS (targets),
609 ev_view_primary_get_cb,
610 ev_view_primary_clear_cb,
612 ev_view_primary_clear_cb (clipboard, ev_view);
614 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
615 gtk_clipboard_clear (clipboard);
620 ev_view_button_press_event (GtkWidget *widget,
621 GdkEventButton *event)
623 EvView *view = EV_VIEW (widget);
625 if (!GTK_WIDGET_HAS_FOCUS (widget)) {
626 gtk_widget_grab_focus (widget);
629 view->pressed_button = event->button;
631 switch (event->button) {
633 if (view->has_selection) {
634 view->has_selection = FALSE;
635 gtk_widget_queue_draw (widget);
638 view->selection_start.x = event->x;
639 view->selection_start.y = event->y;
647 status_message_from_link (EvLink *link)
653 type = ev_link_get_link_type (link);
656 case EV_LINK_TYPE_TITLE:
657 msg = g_strdup (ev_link_get_title (link));
659 case EV_LINK_TYPE_PAGE:
660 page = ev_link_get_page (link);
661 msg = g_strdup_printf (_("Go to page %d"), page);
663 case EV_LINK_TYPE_EXTERNAL_URI:
664 msg = g_strdup (ev_link_get_uri (link));
674 ev_view_set_status (EvView *view, const char *message)
676 g_return_if_fail (EV_IS_VIEW (view));
678 if (message != view->status) {
679 g_free (view->status);
680 view->status = g_strdup (message);
681 g_object_notify (G_OBJECT (view), "status");
686 ev_view_set_find_status (EvView *view, const char *message)
688 g_return_if_fail (EV_IS_VIEW (view));
690 g_free (view->find_status);
691 view->find_status = g_strdup (message);
692 g_object_notify (G_OBJECT (view), "find-status");
696 ev_view_create_invisible_cursor(void)
699 GdkColor black = { 0, 0, 0, 0 };
700 static unsigned char bits[] = { 0x00 };
702 empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
704 return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
708 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
710 GdkCursor *cursor = NULL;
714 if (view->cursor == new_cursor) {
718 widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
719 display = gtk_widget_get_display (widget);
720 view->cursor = new_cursor;
722 switch (new_cursor) {
723 case EV_VIEW_CURSOR_NORMAL:
724 gdk_window_set_cursor (widget->window, NULL);
726 case EV_VIEW_CURSOR_LINK:
727 cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
729 case EV_VIEW_CURSOR_WAIT:
730 cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
732 case EV_VIEW_CURSOR_HIDDEN:
733 cursor = ev_view_create_invisible_cursor ();
739 gdk_window_set_cursor (widget->window, cursor);
740 gdk_cursor_unref (cursor);
746 ev_view_motion_notify_event (GtkWidget *widget,
747 GdkEventMotion *event)
749 EvView *view = EV_VIEW (widget);
751 if (view->pressed_button > 0) {
752 GdkRectangle selection;
754 view->has_selection = TRUE;
755 selection.x = MIN (view->selection_start.x, event->x);
756 selection.y = MIN (view->selection_start.y, event->y);
757 selection.width = ABS (view->selection_start.x - event->x) + 1;
758 selection.height = ABS (view->selection_start.y - event->y) + 1;
759 view_rect_to_doc_rect (view, &selection, &view->selection);
761 gtk_widget_queue_draw (widget);
762 } else if (view->document) {
765 link = ev_document_get_link (view->document, event->x, event->y);
769 msg = status_message_from_link (link);
770 ev_view_set_status (view, msg);
771 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
774 g_object_unref (link);
776 ev_view_set_status (view, NULL);
777 if (view->cursor == EV_VIEW_CURSOR_LINK) {
778 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
787 ev_view_button_release_event (GtkWidget *widget,
788 GdkEventButton *event)
790 EvView *view = EV_VIEW (widget);
792 view->pressed_button = -1;
794 if (view->has_selection) {
795 ev_view_update_primary_selection (view);
796 } else if (view->document) {
799 link = ev_document_get_link (view->document,
803 ev_view_go_to_link (view, link);
804 g_object_unref (link);
812 on_adjustment_value_changed (GtkAdjustment *adjustment,
815 view_update_adjustments (view);
819 set_scroll_adjustment (EvView *view,
820 GtkOrientation orientation,
821 GtkAdjustment *adjustment)
823 GtkAdjustment **to_set;
825 if (orientation == GTK_ORIENTATION_HORIZONTAL)
826 to_set = &view->hadjustment;
828 to_set = &view->vadjustment;
830 if (*to_set != adjustment) {
832 g_signal_handlers_disconnect_by_func (*to_set,
833 (gpointer) on_adjustment_value_changed,
835 g_object_unref (*to_set);
838 *to_set = adjustment;
839 view_set_adjustment_values (view, orientation);
842 g_object_ref (*to_set);
843 g_signal_connect (*to_set, "value_changed",
844 G_CALLBACK (on_adjustment_value_changed), view);
850 ev_view_set_scroll_adjustments (EvView *view,
851 GtkAdjustment *hadjustment,
852 GtkAdjustment *vadjustment)
854 set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
855 set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
857 view_update_adjustments (view);
861 add_scroll_binding (GtkBindingSet *binding_set,
863 GtkScrollType scroll,
866 guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
868 gtk_binding_entry_add_signal (binding_set, keyval, 0,
870 GTK_TYPE_SCROLL_TYPE, scroll,
871 G_TYPE_BOOLEAN, horizontal);
872 gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
874 GTK_TYPE_SCROLL_TYPE, scroll,
875 G_TYPE_BOOLEAN, horizontal);
879 ev_view_scroll_view (EvView *view,
880 GtkScrollType scroll,
883 if (scroll == GTK_SCROLL_PAGE_BACKWARD) {
884 ev_view_set_page (view, ev_view_get_page (view) - 1);
885 } else if (scroll == GTK_SCROLL_PAGE_FORWARD) {
886 ev_view_set_page (view, ev_view_get_page (view) + 1);
888 GtkAdjustment *adjustment;
892 adjustment = view->hadjustment;
894 adjustment = view->vadjustment;
897 value = adjustment->value;
900 case GTK_SCROLL_STEP_BACKWARD:
901 value -= adjustment->step_increment;
903 case GTK_SCROLL_STEP_FORWARD:
904 value += adjustment->step_increment;
910 value = CLAMP (value, adjustment->lower,
911 adjustment->upper - adjustment->page_size);
913 gtk_adjustment_set_value (adjustment, value);
918 ev_view_set_property (GObject *object,
927 case PROP_FIND_STATUS:
933 ev_view_get_property (GObject *object,
938 EvView *view = EV_VIEW (object);
943 g_value_set_string (value, view->status);
945 case PROP_FIND_STATUS:
946 g_value_set_string (value, view->status);
952 ev_view_class_init (EvViewClass *class)
954 GObjectClass *object_class = G_OBJECT_CLASS (class);
955 GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
956 GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
957 GtkBindingSet *binding_set;
959 object_class->finalize = ev_view_finalize;
960 object_class->set_property = ev_view_set_property;
961 object_class->get_property = ev_view_get_property;
963 widget_class->expose_event = ev_view_expose_event;
964 widget_class->button_press_event = ev_view_button_press_event;
965 widget_class->motion_notify_event = ev_view_motion_notify_event;
966 widget_class->button_release_event = ev_view_button_release_event;
967 widget_class->size_request = ev_view_size_request;
968 widget_class->size_allocate = ev_view_size_allocate;
969 widget_class->realize = ev_view_realize;
970 widget_class->unrealize = ev_view_unrealize;
971 gtk_object_class->destroy = ev_view_destroy;
973 class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
974 class->scroll_view = ev_view_scroll_view;
976 widget_class->set_scroll_adjustments_signal = g_signal_new ("set-scroll-adjustments",
977 G_OBJECT_CLASS_TYPE (object_class),
978 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
979 G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
981 ev_marshal_VOID__OBJECT_OBJECT,
984 GTK_TYPE_ADJUSTMENT);
985 page_changed_signal = g_signal_new ("page-changed",
986 G_OBJECT_CLASS_TYPE (object_class),
987 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
988 G_STRUCT_OFFSET (EvViewClass, page_changed),
990 ev_marshal_VOID__NONE,
993 g_signal_new ("scroll_view",
994 G_TYPE_FROM_CLASS (object_class),
995 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
996 G_STRUCT_OFFSET (EvViewClass, scroll_view),
998 ev_marshal_VOID__ENUM_BOOLEAN,
1000 GTK_TYPE_SCROLL_TYPE,
1003 g_object_class_install_property (object_class,
1005 g_param_spec_string ("status",
1007 "The status message",
1011 g_object_class_install_property (object_class,
1013 g_param_spec_string ("find-status",
1014 "Find Status Message",
1015 "The find status message",
1019 binding_set = gtk_binding_set_by_class (class);
1021 add_scroll_binding (binding_set, GDK_Left, GTK_SCROLL_STEP_BACKWARD, TRUE);
1022 add_scroll_binding (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD, TRUE);
1023 add_scroll_binding (binding_set, GDK_Up, GTK_SCROLL_STEP_BACKWARD, FALSE);
1024 add_scroll_binding (binding_set, GDK_Down, GTK_SCROLL_STEP_FORWARD, FALSE);
1026 add_scroll_binding (binding_set, GDK_Page_Up, GTK_SCROLL_PAGE_BACKWARD, FALSE);
1027 add_scroll_binding (binding_set, GDK_Page_Down, GTK_SCROLL_PAGE_FORWARD, FALSE);
1031 ev_view_init (EvView *view)
1033 GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
1037 view->pressed_button = -1;
1038 view->cursor = EV_VIEW_CURSOR_NORMAL;
1042 update_find_status_message (EvView *view)
1046 if (ev_document_get_page (view->document) == view->find_page) {
1049 results = ev_document_find_get_n_results
1050 (EV_DOCUMENT_FIND (view->document));
1052 /* TRANS: Sometimes this could be better translated as
1053 "%d hit(s) on this page". Therefore this string
1054 contains plural cases. */
1055 message = g_strdup_printf (ngettext ("%d found on this page",
1056 "%d found on this page",
1062 percent = ev_document_find_get_progress
1063 (EV_DOCUMENT_FIND (view->document));
1065 if (percent >= (1.0 - 1e-10)) {
1066 message = g_strdup (_("Not found"));
1068 message = g_strdup_printf (_("%3d%% remaining to search"),
1069 (int) ((1.0 - percent) * 100));
1074 ev_view_set_find_status (view, message);
1079 set_document_page (EvView *view, int new_page)
1084 pages = ev_document_get_n_pages (view->document);
1085 page = CLAMP (new_page, 1, pages);
1087 if (view->document) {
1088 int old_page = ev_document_get_page (view->document);
1089 int old_width, old_height;
1091 ev_document_get_page_size (view->document,
1093 &old_width, &old_height);
1095 if (old_page != page) {
1096 if (view->cursor != EV_VIEW_CURSOR_HIDDEN) {
1097 ev_view_set_cursor (view, EV_VIEW_CURSOR_WAIT);
1099 ev_document_set_page (view->document, page);
1102 if (old_page != ev_document_get_page (view->document)) {
1105 g_signal_emit (view, page_changed_signal, 0);
1107 view->has_selection = FALSE;
1108 ev_document_get_page_size (view->document,
1111 if (width != old_width || height != old_height)
1112 gtk_widget_queue_resize (GTK_WIDGET (view));
1114 gtk_adjustment_set_value (view->vadjustment,
1115 view->vadjustment->lower);
1118 if (EV_IS_DOCUMENT_FIND (view->document)) {
1119 view->find_page = page;
1120 view->find_result = 0;
1121 update_find_status_message (view);
1129 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
1131 GtkWidget *widget = GTK_WIDGET (view);
1132 GtkAdjustment *adjustment;
1135 adjustment = view->vadjustment;
1137 if (rect->y < adjustment->value) {
1138 value = MAX (adjustment->lower, rect->y - MARGIN);
1139 gtk_adjustment_set_value (view->vadjustment, value);
1140 } else if (rect->y + rect->height >
1141 adjustment->value + widget->allocation.height) {
1142 value = MIN (adjustment->upper, rect->y + rect->height -
1143 widget->allocation.height + MARGIN);
1144 gtk_adjustment_set_value (view->vadjustment, value);
1147 adjustment = view->hadjustment;
1149 if (rect->x < adjustment->value) {
1150 value = MAX (adjustment->lower, rect->x - MARGIN);
1151 gtk_adjustment_set_value (view->hadjustment, value);
1152 } else if (rect->x + rect->height >
1153 adjustment->value + widget->allocation.width) {
1154 value = MIN (adjustment->upper, rect->x + rect->width -
1155 widget->allocation.width + MARGIN);
1156 gtk_adjustment_set_value (view->hadjustment, value);
1161 jump_to_find_result (EvView *view)
1163 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1167 n_results = ev_document_find_get_n_results (find);
1169 if (n_results > view->find_result) {
1170 ev_document_find_get_result
1171 (find, view->find_result, &rect);
1172 ensure_rectangle_is_visible (view, &rect);
1177 jump_to_find_page (EvView *view)
1181 n_pages = ev_document_get_n_pages (view->document);
1183 for (i = 0; i <= n_pages; i++) {
1187 page = i + view->find_page;
1188 if (page > n_pages) {
1189 page = page - n_pages;
1192 has_results = ev_document_find_page_has_results
1193 (EV_DOCUMENT_FIND (view->document), page);
1194 if (has_results == -1) {
1195 view->find_page = page;
1197 } else if (has_results == 1) {
1198 set_document_page (view, page);
1199 jump_to_find_result (view);
1206 find_changed_cb (EvDocument *document, int page, EvView *view)
1208 jump_to_find_page (view);
1209 jump_to_find_result (view);
1210 update_find_status_message (view);
1212 if (ev_document_get_page (document) == page) {
1213 gtk_widget_queue_draw (GTK_WIDGET (view));
1218 page_changed_callback (EvDocument *document,
1221 LOG ("Page changed callback");
1223 gtk_widget_queue_draw (GTK_WIDGET (view));
1225 if (view->cursor != EV_VIEW_CURSOR_HIDDEN) {
1226 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1231 scale_changed_callback (EvDocument *document,
1234 LOG ("Scale changed callback");
1236 gtk_widget_queue_resize (GTK_WIDGET (view));
1239 /*** Public API ***/
1244 return g_object_new (EV_TYPE_VIEW, NULL);
1248 ev_view_set_document (EvView *view,
1249 EvDocument *document)
1251 g_return_if_fail (EV_IS_VIEW (view));
1253 if (document != view->document) {
1254 if (view->document) {
1255 g_signal_handlers_disconnect_by_func (view->document,
1258 g_object_unref (view->document);
1261 view->document = document;
1262 view->find_page = 1;
1263 view->find_result = 0;
1265 if (view->document) {
1266 g_object_ref (view->document);
1267 if (EV_IS_DOCUMENT_FIND (view->document)) {
1268 g_signal_connect (view->document,
1270 G_CALLBACK (find_changed_cb),
1273 g_signal_connect (view->document,
1275 G_CALLBACK (page_changed_callback),
1277 g_signal_connect (view->document,
1279 G_CALLBACK (scale_changed_callback),
1283 if (GTK_WIDGET_REALIZED (view))
1284 ev_document_set_target (view->document, view->bin_window);
1286 gtk_widget_queue_resize (GTK_WIDGET (view));
1288 g_signal_emit (view, page_changed_signal, 0);
1293 go_to_link (EvView *view, EvLink *link)
1299 type = ev_link_get_link_type (link);
1302 case EV_LINK_TYPE_TITLE:
1304 case EV_LINK_TYPE_PAGE:
1305 page = ev_link_get_page (link);
1306 set_document_page (view, page);
1308 case EV_LINK_TYPE_EXTERNAL_URI:
1309 uri = ev_link_get_uri (link);
1310 gnome_vfs_url_show (uri);
1316 ev_view_go_to_link (EvView *view, EvLink *link)
1318 go_to_link (view, link);
1322 ev_view_set_page (EvView *view,
1325 g_return_if_fail (EV_IS_VIEW (view));
1327 set_document_page (view, page);
1331 ev_view_get_page (EvView *view)
1334 return ev_document_get_page (view->document);
1340 ev_view_zoom (EvView *view,
1347 scale = view->scale * factor;
1351 scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
1353 view->scale = scale;
1355 ev_document_set_scale (view->document, view->scale);
1359 ev_view_zoom_in (EvView *view)
1361 view->width = view->height = -1;
1362 ev_view_zoom (view, ZOOM_IN_FACTOR, TRUE);
1366 ev_view_zoom_out (EvView *view)
1368 view->width = view->height = -1;
1369 ev_view_zoom (view, ZOOM_OUT_FACTOR, TRUE);
1373 size_to_zoom_factor (EvView *view, int width, int height)
1375 int doc_width, doc_height;
1376 double scale, scale_w, scale_h;
1379 doc_width = doc_height = 0;
1380 scale = scale_w = scale_h = 1.0;
1381 ev_document_get_page_size (view->document, -1, &doc_width, &doc_height);
1382 /* FIXME: The border size isn't constant. Ugh. Still, if we have extra
1383 * space, we just cut it from the border */
1384 ev_document_misc_get_page_border_size (doc_width, doc_height, &border);
1386 if (doc_width == 0 && doc_height == 0) {
1393 target_width = width - (view->spacing * 2 + border.left + border.right);
1394 scale = scale_w = (double)target_width * view->scale / doc_width;
1400 target_height = height - (view->spacing * 2 + border.top + border.bottom);
1401 scale = scale_h = (double)target_height * view->scale / doc_height;
1404 if (width >= 0 && height >= 0) {
1405 scale = (scale_w < scale_h) ? scale_w : scale_h;
1412 ev_view_set_size (EvView *view,
1418 if (!view->document) {
1422 if (view->width != width ||
1423 view->height != height) {
1424 view->width = width;
1425 view->height = height;
1426 factor = size_to_zoom_factor (view, width, height);
1427 ev_view_zoom (view, factor, FALSE);
1432 ev_view_get_status (EvView *view)
1434 g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1436 return view->status;
1440 ev_view_get_find_status (EvView *view)
1442 g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1444 return view->find_status;
1448 ev_view_find_next (EvView *view)
1450 int n_results, n_pages;
1451 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1453 n_results = ev_document_find_get_n_results (find);
1454 n_pages = ev_document_get_n_pages (view->document);
1456 view->find_result++;
1458 if (view->find_result >= n_results) {
1459 view->find_result = 0;
1462 if (view->find_page > n_pages) {
1463 view->find_page = 1;
1466 jump_to_find_page (view);
1468 jump_to_find_result (view);
1469 gtk_widget_queue_draw (GTK_WIDGET (view));
1474 ev_view_find_previous (EvView *view)
1476 int n_results, n_pages;
1477 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1479 n_results = ev_document_find_get_n_results (find);
1480 n_pages = ev_document_get_n_pages (view->document);
1482 view->find_result--;
1484 if (view->find_result < 0) {
1485 view->find_result = 0;
1488 if (view->find_page < 1) {
1489 view->find_page = n_pages;
1492 jump_to_find_page (view);
1494 jump_to_find_result (view);
1495 gtk_widget_queue_draw (GTK_WIDGET (view));
1499 ev_view_hide_cursor (EvView *view)
1501 ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
1505 ev_view_show_cursor (EvView *view)
1507 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);