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
73 /* FIXME: temporarily setting the epsilon very high until we figure out how to
74 * constrain the size of the window to a pixel width, instead of to the zoom
76 #define ZOOM_EPSILON 1e-2
80 GtkWidget parent_instance;
84 GdkWindow *bin_window;
92 gboolean pressed_button;
93 gboolean has_selection;
94 GdkPoint selection_start;
95 GdkRectangle selection;
98 GtkAdjustment *hadjustment;
99 GtkAdjustment *vadjustment;
106 EvSizingMode sizing_mode;
109 struct _EvViewClass {
110 GtkWidgetClass parent_class;
112 void (*set_scroll_adjustments) (EvView *view,
113 GtkAdjustment *hadjustment,
114 GtkAdjustment *vadjustment);
115 void (*scroll_view) (EvView *view,
116 GtkScrollType scroll,
117 gboolean horizontal);
119 /* Should this be notify::page? */
120 void (*page_changed) (EvView *view);
123 static guint page_changed_signal = 0;
125 static void ev_view_set_scroll_adjustments (EvView *view,
126 GtkAdjustment *hadjustment,
127 GtkAdjustment *vadjustment);
129 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
131 /*** Helper functions ***/
134 view_update_adjustments (EvView *view)
136 int old_x = view->scroll_x;
137 int old_y = view->scroll_y;
139 if (view->hadjustment)
140 view->scroll_x = view->hadjustment->value;
144 if (view->vadjustment)
145 view->scroll_y = view->vadjustment->value;
149 if (GTK_WIDGET_REALIZED (view) &&
150 (view->scroll_x != old_x || view->scroll_y != old_y)) {
151 gdk_window_move (view->bin_window, - view->scroll_x, - view->scroll_y);
152 gdk_window_process_updates (view->bin_window, TRUE);
157 view_set_adjustment_values (EvView *view,
158 GtkOrientation orientation)
160 GtkWidget *widget = GTK_WIDGET (view);
161 GtkAdjustment *adjustment;
162 gboolean value_changed = FALSE;
166 if (orientation == GTK_ORIENTATION_HORIZONTAL) {
167 requisition = widget->requisition.width;
168 allocation = widget->allocation.width;
169 adjustment = view->hadjustment;
171 requisition = widget->requisition.height;
172 allocation = widget->allocation.height;
173 adjustment = view->vadjustment;
179 adjustment->page_size = allocation;
180 adjustment->step_increment = allocation * 0.1;
181 adjustment->page_increment = allocation * 0.9;
182 adjustment->lower = 0;
183 adjustment->upper = MAX (allocation, requisition);
185 if (adjustment->value > adjustment->upper - adjustment->page_size) {
186 adjustment->value = adjustment->upper - adjustment->page_size;
187 value_changed = TRUE;
190 gtk_adjustment_changed (adjustment);
192 gtk_adjustment_value_changed (adjustment);
195 /*** Virtual function implementations ***/
198 ev_view_finalize (GObject *object)
200 EvView *view = EV_VIEW (object);
205 g_object_unref (view->document);
207 ev_view_set_scroll_adjustments (view, NULL, NULL);
209 G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
213 ev_view_destroy (GtkObject *object)
215 EvView *view = EV_VIEW (object);
217 ev_view_set_scroll_adjustments (view, NULL, NULL);
219 GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
223 ev_view_size_request (GtkWidget *widget,
224 GtkRequisition *requisition)
226 EvView *view = EV_VIEW (widget);
230 if (! GTK_WIDGET_REALIZED (widget))
233 if (! view->document) {
234 requisition->width = 1;
235 requisition->height = 1;
239 ev_document_get_page_size (view->document, -1,
241 ev_document_misc_get_page_border_size (width, height, &border);
243 switch (view->sizing_mode) {
244 case EV_SIZING_BEST_FIT:
245 requisition->width = MIN_SCALE * ((float) width) / view->scale;
246 requisition->height = MIN_SCALE * ((float) height) / view->scale;
248 case EV_SIZING_FIT_WIDTH:
249 requisition->width = MIN_SCALE * ((float) width) / view->scale;
250 requisition->height = height + border.top + border.bottom;
251 requisition->height += view->spacing * 2;
254 requisition->width = width + border.left + border.right;
255 requisition->height = height + border.top + border.bottom;
256 requisition->width += view->spacing * 2;
257 requisition->height += view->spacing * 2;
263 ev_view_size_allocate (GtkWidget *widget,
264 GtkAllocation *allocation)
266 EvView *view = EV_VIEW (widget);
268 GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
270 view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
271 view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
273 if (GTK_WIDGET_REALIZED (widget)) {
274 gdk_window_resize (view->bin_window,
275 MAX (widget->allocation.width, widget->requisition.width),
276 MAX (widget->allocation.height, widget->requisition.height));
281 ev_view_realize (GtkWidget *widget)
283 EvView *view = EV_VIEW (widget);
284 GdkWindowAttr attributes;
286 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
289 attributes.window_type = GDK_WINDOW_CHILD;
290 attributes.wclass = GDK_INPUT_OUTPUT;
291 attributes.visual = gtk_widget_get_visual (widget);
292 attributes.colormap = gtk_widget_get_colormap (widget);
294 attributes.x = widget->allocation.x;
295 attributes.y = widget->allocation.y;
296 attributes.width = widget->allocation.width;
297 attributes.height = widget->allocation.height;
298 attributes.event_mask = 0;
300 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
302 GDK_WA_X | GDK_WA_Y |
305 gdk_window_set_user_data (widget->window, widget);
306 widget->style = gtk_style_attach (widget->style, widget->window);
307 gdk_window_set_background (widget->window, &widget->style->mid[widget->state]);
311 attributes.width = MAX (widget->allocation.width, widget->requisition.width);
312 attributes.height = MAX (widget->allocation.height, widget->requisition.height);
313 attributes.event_mask = GDK_EXPOSURE_MASK |
314 GDK_BUTTON_PRESS_MASK |
315 GDK_BUTTON_RELEASE_MASK |
318 GDK_POINTER_MOTION_MASK |
319 GDK_LEAVE_NOTIFY_MASK;
321 view->bin_window = gdk_window_new (widget->window,
323 GDK_WA_X | GDK_WA_Y |
326 gdk_window_set_user_data (view->bin_window, widget);
327 gdk_window_show (view->bin_window);
329 widget->style = gtk_style_attach (widget->style, view->bin_window);
330 gdk_window_set_background (view->bin_window, &widget->style->mid[widget->state]);
332 if (view->document) {
333 ev_document_set_target (view->document, view->bin_window);
335 /* We can't get page size without a target, so we have to
336 * queue a size request at realization. Could be fixed
337 * with EvDocument changes to allow setting a GdkScreen
338 * without setting a target.
340 gtk_widget_queue_resize (widget);
345 ev_view_unrealize (GtkWidget *widget)
347 EvView *view = EV_VIEW (widget);
350 ev_document_set_target (view->document, NULL);
352 gdk_window_set_user_data (view->bin_window, NULL);
353 gdk_window_destroy (view->bin_window);
354 view->bin_window = NULL;
356 GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget);
360 ev_gdk_color_to_rgb (const GdkColor *color)
363 result = (0xff0000 | (color->red & 0xff00));
365 result |= ((color->green & 0xff00) | (color->blue >> 8));
370 draw_rubberband (GtkWidget *widget, GdkWindow *window,
371 const GdkRectangle *rect, guchar alpha)
375 GdkColor *fill_color_gdk;
378 fill_color_gdk = gdk_color_copy (>K_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
379 fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
381 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
382 rect->width, rect->height);
383 gdk_pixbuf_fill (pixbuf, fill_color);
385 gdk_draw_pixbuf (window, NULL, pixbuf,
388 rect->width, rect->height,
392 g_object_unref (pixbuf);
394 gc = gdk_gc_new (window);
395 gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
396 gdk_draw_rectangle (window, gc, FALSE,
402 gdk_color_free (fill_color_gdk);
406 highlight_find_results (EvView *view)
408 EvDocumentFind *find;
411 g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
413 find = EV_DOCUMENT_FIND (view->document);
415 results = ev_document_find_get_n_results (find);
417 for (i = 0; i < results; i++) {
418 GdkRectangle rectangle;
421 alpha = (i == view->find_result) ? 0x90 : 0x20;
422 ev_document_find_get_result (find, i, &rectangle);
423 draw_rubberband (GTK_WIDGET (view), view->bin_window,
430 expose_bin_window (GtkWidget *widget,
431 GdkEventExpose *event)
433 EvView *view = EV_VIEW (widget);
434 int x_offset, y_offset;
438 int target_width, target_height;
440 if (view->document == NULL)
443 ev_document_get_page_size (view->document, -1,
445 ev_document_misc_get_page_border_size (width, height, &border);
447 x_offset = view->spacing;
448 y_offset = view->spacing;
449 target_width = width + border.left + border.right + view->spacing * 2;
450 target_height = height + border.top + border.bottom + view->spacing * 2;
452 x_offset += MAX (0, (widget->allocation.width - target_width) / 2);
453 y_offset += MAX (0, (widget->allocation.height - target_height) / 2);
455 /* Paint the frame */
458 area.width = width + border.left + border.right;
459 area.height = height + border.top + border.bottom;
460 ev_document_misc_paint_one_page (view->bin_window, widget, &area, &border);
462 /* Render the document itself */
463 ev_document_set_page_offset (view->document,
464 x_offset + border.left,
465 y_offset + border.top);
467 LOG ("Render area %d %d %d %d", event->area.x, event->area.y,
468 event->area.width, event->area.height);
470 ev_document_render (view->document,
471 event->area.x, event->area.y,
472 event->area.width, event->area.height);
474 if (EV_IS_DOCUMENT_FIND (view->document)) {
475 highlight_find_results (view);
478 if (view->has_selection) {
479 draw_rubberband (widget, view->bin_window,
480 &view->selection, 0x40);
485 ev_view_expose_event (GtkWidget *widget,
486 GdkEventExpose *event)
488 EvView *view = EV_VIEW (widget);
490 if (event->window == view->bin_window)
491 expose_bin_window (widget, event);
493 return GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event (widget, event);
499 ev_view_select_all (EvView *ev_view)
501 GtkWidget *widget = GTK_WIDGET (ev_view);
503 g_return_if_fail (EV_IS_VIEW (ev_view));
505 ev_view->has_selection = TRUE;
506 ev_view->selection.x = ev_view->selection.y = 0;
507 ev_view->selection.width = widget->requisition.width;
508 ev_view->selection.height = widget->requisition.height;
510 gtk_widget_queue_draw (widget);
514 ev_view_copy (EvView *ev_view)
516 GtkClipboard *clipboard;
519 text = ev_document_get_text (ev_view->document, &ev_view->selection);
520 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
521 GDK_SELECTION_CLIPBOARD);
522 gtk_clipboard_set_text (clipboard, text, -1);
527 ev_view_primary_get_cb (GtkClipboard *clipboard,
528 GtkSelectionData *selection_data,
532 EvView *ev_view = EV_VIEW (data);
535 text = ev_document_get_text (ev_view->document, &ev_view->selection);
536 gtk_selection_data_set_text (selection_data, text, -1);
540 ev_view_primary_clear_cb (GtkClipboard *clipboard,
543 EvView *ev_view = EV_VIEW (data);
545 ev_view->has_selection = FALSE;
549 ev_view_update_primary_selection (EvView *ev_view)
551 GtkClipboard *clipboard;
553 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
554 GDK_SELECTION_PRIMARY);
556 if (ev_view->has_selection) {
557 if (!gtk_clipboard_set_with_owner (clipboard,
559 G_N_ELEMENTS (targets),
560 ev_view_primary_get_cb,
561 ev_view_primary_clear_cb,
563 ev_view_primary_clear_cb (clipboard, ev_view);
565 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
566 gtk_clipboard_clear (clipboard);
571 ev_view_button_press_event (GtkWidget *widget,
572 GdkEventButton *event)
574 EvView *view = EV_VIEW (widget);
576 if (!GTK_WIDGET_HAS_FOCUS (widget)) {
577 gtk_widget_grab_focus (widget);
580 view->pressed_button = event->button;
582 switch (event->button) {
584 if (view->has_selection) {
585 view->has_selection = FALSE;
586 gtk_widget_queue_draw (widget);
589 view->selection_start.x = event->x;
590 view->selection_start.y = event->y;
598 status_message_from_link (EvLink *link)
604 type = ev_link_get_link_type (link);
607 case EV_LINK_TYPE_TITLE:
608 msg = g_strdup (ev_link_get_title (link));
610 case EV_LINK_TYPE_PAGE:
611 page = ev_link_get_page (link);
612 msg = g_strdup_printf (_("Go to page %d"), page);
614 case EV_LINK_TYPE_EXTERNAL_URI:
615 msg = g_strdup (ev_link_get_uri (link));
625 ev_view_set_status (EvView *view, const char *message)
627 g_return_if_fail (EV_IS_VIEW (view));
629 if (message != view->status) {
630 g_free (view->status);
631 view->status = g_strdup (message);
632 g_object_notify (G_OBJECT (view), "status");
637 ev_view_set_find_status (EvView *view, const char *message)
639 g_return_if_fail (EV_IS_VIEW (view));
641 g_free (view->find_status);
642 view->find_status = g_strdup (message);
643 g_object_notify (G_OBJECT (view), "find-status");
647 ev_view_create_invisible_cursor(void)
650 GdkColor black = { 0, 0, 0, 0 };
651 static unsigned char bits[] = { 0x00 };
653 empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
655 return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
659 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
661 GdkCursor *cursor = NULL;
665 if (view->cursor == new_cursor) {
669 widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
670 display = gtk_widget_get_display (widget);
671 view->cursor = new_cursor;
673 switch (new_cursor) {
674 case EV_VIEW_CURSOR_NORMAL:
675 gdk_window_set_cursor (widget->window, NULL);
677 case EV_VIEW_CURSOR_LINK:
678 cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
680 case EV_VIEW_CURSOR_WAIT:
681 cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
683 case EV_VIEW_CURSOR_HIDDEN:
684 cursor = ev_view_create_invisible_cursor ();
690 gdk_window_set_cursor (widget->window, cursor);
691 gdk_cursor_unref (cursor);
697 ev_view_motion_notify_event (GtkWidget *widget,
698 GdkEventMotion *event)
700 EvView *view = EV_VIEW (widget);
702 if (view->pressed_button > 0) {
703 view->has_selection = TRUE;
704 view->selection.x = MIN (view->selection_start.x, event->x);
705 view->selection.y = MIN (view->selection_start.y, event->y);
706 view->selection.width = ABS (view->selection_start.x - event->x) + 1;
707 view->selection.height = ABS (view->selection_start.y - event->y) + 1;
709 gtk_widget_queue_draw (widget);
710 } else if (view->document) {
713 link = ev_document_get_link (view->document, event->x, event->y);
717 msg = status_message_from_link (link);
718 ev_view_set_status (view, msg);
719 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
722 g_object_unref (link);
724 ev_view_set_status (view, NULL);
725 if (view->cursor == EV_VIEW_CURSOR_LINK) {
726 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
735 ev_view_button_release_event (GtkWidget *widget,
736 GdkEventButton *event)
738 EvView *view = EV_VIEW (widget);
740 view->pressed_button = -1;
742 if (view->has_selection) {
743 ev_view_update_primary_selection (view);
744 } else if (view->document) {
747 link = ev_document_get_link (view->document,
751 ev_view_go_to_link (view, link);
752 g_object_unref (link);
760 on_adjustment_value_changed (GtkAdjustment *adjustment,
763 view_update_adjustments (view);
767 set_scroll_adjustment (EvView *view,
768 GtkOrientation orientation,
769 GtkAdjustment *adjustment)
771 GtkAdjustment **to_set;
773 if (orientation == GTK_ORIENTATION_HORIZONTAL)
774 to_set = &view->hadjustment;
776 to_set = &view->vadjustment;
778 if (*to_set != adjustment) {
780 g_signal_handlers_disconnect_by_func (*to_set,
781 (gpointer) on_adjustment_value_changed,
783 g_object_unref (*to_set);
786 *to_set = adjustment;
787 view_set_adjustment_values (view, orientation);
790 g_object_ref (*to_set);
791 g_signal_connect (*to_set, "value_changed",
792 G_CALLBACK (on_adjustment_value_changed), view);
798 ev_view_set_scroll_adjustments (EvView *view,
799 GtkAdjustment *hadjustment,
800 GtkAdjustment *vadjustment)
802 set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
803 set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
805 view_update_adjustments (view);
809 add_scroll_binding (GtkBindingSet *binding_set,
811 GtkScrollType scroll,
814 guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
816 gtk_binding_entry_add_signal (binding_set, keyval, 0,
818 GTK_TYPE_SCROLL_TYPE, scroll,
819 G_TYPE_BOOLEAN, horizontal);
820 gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
822 GTK_TYPE_SCROLL_TYPE, scroll,
823 G_TYPE_BOOLEAN, horizontal);
827 ev_view_scroll_view (EvView *view,
828 GtkScrollType scroll,
831 if (scroll == GTK_SCROLL_PAGE_BACKWARD) {
832 ev_view_set_page (view, ev_view_get_page (view) - 1);
833 } else if (scroll == GTK_SCROLL_PAGE_FORWARD) {
834 ev_view_set_page (view, ev_view_get_page (view) + 1);
836 GtkAdjustment *adjustment;
840 adjustment = view->hadjustment;
842 adjustment = view->vadjustment;
845 value = adjustment->value;
848 case GTK_SCROLL_STEP_BACKWARD:
849 value -= adjustment->step_increment;
851 case GTK_SCROLL_STEP_FORWARD:
852 value += adjustment->step_increment;
858 value = CLAMP (value, adjustment->lower,
859 adjustment->upper - adjustment->page_size);
861 gtk_adjustment_set_value (adjustment, value);
866 ev_view_set_property (GObject *object,
875 case PROP_FIND_STATUS:
881 ev_view_get_property (GObject *object,
886 EvView *view = EV_VIEW (object);
891 g_value_set_string (value, view->status);
893 case PROP_FIND_STATUS:
894 g_value_set_string (value, view->status);
900 ev_view_class_init (EvViewClass *class)
902 GObjectClass *object_class = G_OBJECT_CLASS (class);
903 GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
904 GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
905 GtkBindingSet *binding_set;
907 object_class->finalize = ev_view_finalize;
908 object_class->set_property = ev_view_set_property;
909 object_class->get_property = ev_view_get_property;
911 widget_class->expose_event = ev_view_expose_event;
912 widget_class->button_press_event = ev_view_button_press_event;
913 widget_class->motion_notify_event = ev_view_motion_notify_event;
914 widget_class->button_release_event = ev_view_button_release_event;
915 widget_class->size_request = ev_view_size_request;
916 widget_class->size_allocate = ev_view_size_allocate;
917 widget_class->realize = ev_view_realize;
918 widget_class->unrealize = ev_view_unrealize;
919 gtk_object_class->destroy = ev_view_destroy;
921 class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
922 class->scroll_view = ev_view_scroll_view;
924 widget_class->set_scroll_adjustments_signal = g_signal_new ("set-scroll-adjustments",
925 G_OBJECT_CLASS_TYPE (object_class),
926 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
927 G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
929 ev_marshal_VOID__OBJECT_OBJECT,
932 GTK_TYPE_ADJUSTMENT);
933 page_changed_signal = g_signal_new ("page-changed",
934 G_OBJECT_CLASS_TYPE (object_class),
935 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
936 G_STRUCT_OFFSET (EvViewClass, page_changed),
938 ev_marshal_VOID__NONE,
941 g_signal_new ("scroll_view",
942 G_TYPE_FROM_CLASS (object_class),
943 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
944 G_STRUCT_OFFSET (EvViewClass, scroll_view),
946 ev_marshal_VOID__ENUM_BOOLEAN,
948 GTK_TYPE_SCROLL_TYPE,
951 g_object_class_install_property (object_class,
953 g_param_spec_string ("status",
955 "The status message",
959 g_object_class_install_property (object_class,
961 g_param_spec_string ("find-status",
962 "Find Status Message",
963 "The find status message",
967 binding_set = gtk_binding_set_by_class (class);
969 add_scroll_binding (binding_set, GDK_Left, GTK_SCROLL_STEP_BACKWARD, TRUE);
970 add_scroll_binding (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD, TRUE);
971 add_scroll_binding (binding_set, GDK_Up, GTK_SCROLL_STEP_BACKWARD, FALSE);
972 add_scroll_binding (binding_set, GDK_Down, GTK_SCROLL_STEP_FORWARD, FALSE);
974 add_scroll_binding (binding_set, GDK_Page_Up, GTK_SCROLL_PAGE_BACKWARD, FALSE);
975 add_scroll_binding (binding_set, GDK_Page_Down, GTK_SCROLL_PAGE_FORWARD, FALSE);
979 ev_view_init (EvView *view)
981 GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
985 view->pressed_button = -1;
986 view->cursor = EV_VIEW_CURSOR_NORMAL;
987 view->sizing_mode = EV_SIZING_BEST_FIT;
991 update_find_status_message (EvView *view)
995 if (ev_document_get_page (view->document) == view->find_page) {
998 results = ev_document_find_get_n_results
999 (EV_DOCUMENT_FIND (view->document));
1001 message = g_strdup_printf (_("%d found on this page"),
1006 percent = ev_document_find_get_progress
1007 (EV_DOCUMENT_FIND (view->document));
1009 if (percent >= (1.0 - 1e-10)) {
1010 message = g_strdup (_("Not found"));
1012 message = g_strdup_printf (_("%3d%% remaining to search"),
1013 (int) ((1.0 - percent) * 100));
1018 ev_view_set_find_status (view, message);
1023 set_document_page (EvView *view, int new_page)
1028 pages = ev_document_get_n_pages (view->document);
1029 page = CLAMP (new_page, 1, pages);
1031 if (view->document) {
1032 int old_page = ev_document_get_page (view->document);
1033 int old_width, old_height;
1035 ev_document_get_page_size (view->document,
1037 &old_width, &old_height);
1039 if (old_page != page) {
1040 if (view->cursor != EV_VIEW_CURSOR_HIDDEN) {
1041 ev_view_set_cursor (view, EV_VIEW_CURSOR_WAIT);
1043 ev_document_set_page (view->document, page);
1046 if (old_page != ev_document_get_page (view->document)) {
1049 g_signal_emit (view, page_changed_signal, 0);
1051 view->has_selection = FALSE;
1052 ev_document_get_page_size (view->document,
1055 if (width != old_width || height != old_height)
1056 gtk_widget_queue_resize (GTK_WIDGET (view));
1058 gtk_adjustment_set_value (view->vadjustment,
1059 view->vadjustment->lower);
1062 if (EV_IS_DOCUMENT_FIND (view->document)) {
1063 view->find_page = page;
1064 view->find_result = 0;
1065 update_find_status_message (view);
1073 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
1075 GtkWidget *widget = GTK_WIDGET (view);
1076 GtkAdjustment *adjustment;
1079 adjustment = view->vadjustment;
1081 if (rect->y < adjustment->value) {
1082 value = MAX (adjustment->lower, rect->y - MARGIN);
1083 gtk_adjustment_set_value (view->vadjustment, value);
1084 } else if (rect->y + rect->height >
1085 adjustment->value + widget->allocation.height) {
1086 value = MIN (adjustment->upper, rect->y + rect->height -
1087 widget->allocation.height + MARGIN);
1088 gtk_adjustment_set_value (view->vadjustment, value);
1091 adjustment = view->hadjustment;
1093 if (rect->x < adjustment->value) {
1094 value = MAX (adjustment->lower, rect->x - MARGIN);
1095 gtk_adjustment_set_value (view->hadjustment, value);
1096 } else if (rect->x + rect->height >
1097 adjustment->value + widget->allocation.width) {
1098 value = MIN (adjustment->upper, rect->x + rect->width -
1099 widget->allocation.width + MARGIN);
1100 gtk_adjustment_set_value (view->hadjustment, value);
1105 jump_to_find_result (EvView *view)
1107 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1111 n_results = ev_document_find_get_n_results (find);
1113 if (n_results > view->find_result) {
1114 ev_document_find_get_result
1115 (find, view->find_result, &rect);
1116 ensure_rectangle_is_visible (view, &rect);
1121 jump_to_find_page (EvView *view)
1125 n_pages = ev_document_get_n_pages (view->document);
1127 for (i = 0; i <= n_pages; i++) {
1131 page = i + view->find_page;
1132 if (page > n_pages) {
1133 page = page - n_pages;
1136 has_results = ev_document_find_page_has_results
1137 (EV_DOCUMENT_FIND (view->document), page);
1138 if (has_results == -1) {
1139 view->find_page = page;
1141 } else if (has_results == 1) {
1142 set_document_page (view, page);
1143 jump_to_find_result (view);
1150 find_changed_cb (EvDocument *document, int page, EvView *view)
1152 jump_to_find_page (view);
1153 jump_to_find_result (view);
1154 update_find_status_message (view);
1156 if (ev_document_get_page (document) == page) {
1157 gtk_widget_queue_draw (GTK_WIDGET (view));
1162 document_changed_callback (EvDocument *document,
1165 gtk_widget_queue_draw (GTK_WIDGET (view));
1167 if (view->cursor != EV_VIEW_CURSOR_HIDDEN) {
1168 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1172 /*** Public API ***/
1177 return g_object_new (EV_TYPE_VIEW, NULL);
1181 ev_view_set_document (EvView *view,
1182 EvDocument *document)
1184 g_return_if_fail (EV_IS_VIEW (view));
1186 if (document != view->document) {
1187 if (view->document) {
1188 g_signal_handlers_disconnect_by_func (view->document,
1191 g_object_unref (view->document);
1194 view->document = document;
1195 view->find_page = 1;
1196 view->find_result = 0;
1198 if (view->document) {
1199 g_object_ref (view->document);
1200 if (EV_IS_DOCUMENT_FIND (view->document)) {
1201 g_signal_connect (view->document,
1203 G_CALLBACK (find_changed_cb),
1206 g_signal_connect (view->document,
1208 G_CALLBACK (document_changed_callback),
1212 if (GTK_WIDGET_REALIZED (view))
1213 ev_document_set_target (view->document, view->bin_window);
1215 gtk_widget_queue_resize (GTK_WIDGET (view));
1217 g_signal_emit (view, page_changed_signal, 0);
1222 ev_view_set_mode (EvView *view,
1223 EvSizingMode sizing_mode)
1225 if (view->sizing_mode == sizing_mode)
1228 view->sizing_mode = sizing_mode;
1229 gtk_widget_queue_resize (GTK_WIDGET (view));
1233 go_to_link (EvView *view, EvLink *link)
1239 type = ev_link_get_link_type (link);
1242 case EV_LINK_TYPE_TITLE:
1244 case EV_LINK_TYPE_PAGE:
1245 page = ev_link_get_page (link);
1246 set_document_page (view, page);
1248 case EV_LINK_TYPE_EXTERNAL_URI:
1249 uri = ev_link_get_uri (link);
1250 gnome_vfs_url_show (uri);
1256 ev_view_go_to_link (EvView *view, EvLink *link)
1258 go_to_link (view, link);
1262 ev_view_set_page (EvView *view,
1265 g_return_if_fail (EV_IS_VIEW (view));
1267 set_document_page (view, page);
1271 ev_view_get_page (EvView *view)
1274 return ev_document_get_page (view->document);
1280 ev_view_zoom (EvView *view,
1287 scale = view->scale * factor;
1291 scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
1293 if (ABS (scale - view->scale) < ZOOM_EPSILON)
1296 view->scale = scale;
1298 ev_document_set_scale (view->document, view->scale);
1300 gtk_widget_queue_resize (GTK_WIDGET (view));
1304 ev_view_zoom_in (EvView *view)
1306 ev_view_zoom (view, ZOOM_IN_FACTOR, TRUE);
1310 ev_view_zoom_out (EvView *view)
1312 ev_view_zoom (view, ZOOM_OUT_FACTOR, TRUE);
1316 ev_view_normal_size (EvView *view)
1318 ev_view_zoom (view, 1.0, FALSE);
1321 /* Unfortunately this is not idempotent (!) (numerical stability
1322 * issues because width and height are rounded) */
1324 ev_view_best_fit (EvView *view, int allocation_width, int allocation_height)
1326 int target_width, target_height;
1330 if (view->document == NULL)
1334 /* This is the bad part. You could make it stable by doing
1335 * ev_document_set_scale 1.0. But at least with pdf this means
1336 * redrawing the whole page */
1337 ev_document_get_page_size (view->document, -1, &width, &height);
1338 /* FIXME: The border size isn't constant. Ugh. Still, if we have extra
1339 * space, we just cut it from the border */
1340 ev_document_misc_get_page_border_size (width, height, &border);
1342 target_width = allocation_width - (view->spacing * 2 + border.left + border.right);
1343 target_height = allocation_height - (view->spacing * 2 + border.top + border.bottom);
1345 LOG ("Best fit %d %d", allocation_width, allocation_height);
1347 if (width != 0 && height != 0) {
1349 double scale_w, scale_h;
1351 scale_w = (double)target_width * view->scale / width;
1352 scale_h = (double)target_height * view->scale / height;
1354 scale = (scale_w < scale_h) ? scale_w : scale_h;
1356 ev_view_zoom (view, scale, FALSE);
1362 ev_view_fit_width (EvView *view, int allocation_width, int allocation_height,
1365 int target_width, target_height;
1369 if (view->document == NULL)
1373 ev_document_get_page_size (view->document, -1, &width, &height);
1374 ev_document_misc_get_page_border_size (width, height, &border);
1376 target_width = allocation_width - (view->spacing * 2 + border.left + border.right);
1377 target_height = allocation_height - (view->spacing * 2 + border.top + border.bottom);
1381 scale = (double)target_width * view->scale / width;
1383 if (height * scale / view->scale > target_height)
1384 scale = ((double)(target_width - vsb_width) * view->scale / width);
1386 ev_view_zoom (view, scale, FALSE);
1391 ev_view_get_status (EvView *view)
1393 g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1395 return view->status;
1399 ev_view_get_find_status (EvView *view)
1401 g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1403 return view->find_status;
1407 ev_view_find_next (EvView *view)
1409 int n_results, n_pages;
1410 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1412 n_results = ev_document_find_get_n_results (find);
1413 n_pages = ev_document_get_n_pages (view->document);
1415 view->find_result++;
1417 if (view->find_result >= n_results) {
1418 view->find_result = 0;
1421 if (view->find_page > n_pages) {
1422 view->find_page = 1;
1425 jump_to_find_page (view);
1427 jump_to_find_result (view);
1428 gtk_widget_queue_draw (GTK_WIDGET (view));
1433 ev_view_find_previous (EvView *view)
1435 int n_results, n_pages;
1436 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1438 n_results = ev_document_find_get_n_results (find);
1439 n_pages = ev_document_get_n_pages (view->document);
1441 view->find_result--;
1443 if (view->find_result < 0) {
1444 view->find_result = 0;
1447 if (view->find_page < 1) {
1448 view->find_page = n_pages;
1451 jump_to_find_page (view);
1453 jump_to_find_result (view);
1454 gtk_widget_queue_draw (GTK_WIDGET (view));
1458 ev_view_hide_cursor (EvView *view)
1460 ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
1464 ev_view_show_cursor (EvView *view)
1466 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);