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
72 #define ZOOM_EPSILON 1e-10
76 GtkWidget parent_instance;
80 GdkWindow *bin_window;
88 gboolean pressed_button;
89 gboolean has_selection;
90 GdkPoint selection_start;
91 GdkRectangle selection;
94 GtkAdjustment *hadjustment;
95 GtkAdjustment *vadjustment;
102 EvSizingMode sizing_mode;
105 struct _EvViewClass {
106 GtkWidgetClass parent_class;
108 void (*set_scroll_adjustments) (EvView *view,
109 GtkAdjustment *hadjustment,
110 GtkAdjustment *vadjustment);
111 void (*scroll_view) (EvView *view,
112 GtkScrollType scroll,
113 gboolean horizontal);
115 /* Should this be notify::page? */
116 void (*page_changed) (EvView *view);
119 static guint page_changed_signal = 0;
121 static void ev_view_set_scroll_adjustments (EvView *view,
122 GtkAdjustment *hadjustment,
123 GtkAdjustment *vadjustment);
125 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
127 /*** Helper functions ***/
130 view_update_adjustments (EvView *view)
132 int old_x = view->scroll_x;
133 int old_y = view->scroll_y;
135 if (view->hadjustment)
136 view->scroll_x = view->hadjustment->value;
140 if (view->vadjustment)
141 view->scroll_y = view->vadjustment->value;
145 if (GTK_WIDGET_REALIZED (view) &&
146 (view->scroll_x != old_x || view->scroll_y != old_y)) {
147 gdk_window_move (view->bin_window, - view->scroll_x, - view->scroll_y);
148 gdk_window_process_updates (view->bin_window, TRUE);
153 view_set_adjustment_values (EvView *view,
154 GtkOrientation orientation)
156 GtkWidget *widget = GTK_WIDGET (view);
157 GtkAdjustment *adjustment;
158 gboolean value_changed = FALSE;
162 if (orientation == GTK_ORIENTATION_HORIZONTAL) {
163 requisition = widget->requisition.width;
164 allocation = widget->allocation.width;
165 adjustment = view->hadjustment;
167 requisition = widget->requisition.height;
168 allocation = widget->allocation.height;
169 adjustment = view->vadjustment;
175 adjustment->page_size = allocation;
176 adjustment->step_increment = allocation * 0.1;
177 adjustment->page_increment = allocation * 0.9;
178 adjustment->lower = 0;
179 adjustment->upper = MAX (allocation, requisition);
181 if (adjustment->value > adjustment->upper - adjustment->page_size) {
182 adjustment->value = adjustment->upper - adjustment->page_size;
183 value_changed = TRUE;
186 gtk_adjustment_changed (adjustment);
188 gtk_adjustment_value_changed (adjustment);
191 /*** Virtual function implementations ***/
194 ev_view_finalize (GObject *object)
196 EvView *view = EV_VIEW (object);
201 g_object_unref (view->document);
203 ev_view_set_scroll_adjustments (view, NULL, NULL);
205 G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
209 ev_view_destroy (GtkObject *object)
211 EvView *view = EV_VIEW (object);
213 ev_view_set_scroll_adjustments (view, NULL, NULL);
215 GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
219 ev_view_size_request (GtkWidget *widget,
220 GtkRequisition *requisition)
222 EvView *view = EV_VIEW (widget);
226 if (! GTK_WIDGET_REALIZED (widget))
229 if (! view->document) {
230 requisition->width = 1;
231 requisition->height = 1;
235 ev_document_get_page_size (view->document, -1,
237 ev_document_misc_get_page_border_size (width, height, &border);
239 switch (view->sizing_mode) {
240 case EV_SIZING_BEST_FIT:
241 requisition->width = MIN_SCALE * ((float) width) / view->scale;
242 requisition->height = MIN_SCALE * ((float) height) / view->scale;
244 case EV_SIZING_FIT_WIDTH:
245 requisition->width = MIN_SCALE * ((float) width) / view->scale;
246 requisition->height = height + border.top + border.bottom;
247 requisition->height += view->spacing * 2;
250 requisition->width = width + border.left + border.right;
251 requisition->height = height + border.top + border.bottom;
252 requisition->width += view->spacing * 2;
253 requisition->height += view->spacing * 2;
259 ev_view_size_allocate (GtkWidget *widget,
260 GtkAllocation *allocation)
262 EvView *view = EV_VIEW (widget);
264 GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
266 view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
267 view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
269 if (GTK_WIDGET_REALIZED (widget)) {
270 gdk_window_resize (view->bin_window,
271 MAX (widget->allocation.width, widget->requisition.width),
272 MAX (widget->allocation.height, widget->requisition.height));
277 ev_view_realize (GtkWidget *widget)
279 EvView *view = EV_VIEW (widget);
280 GdkWindowAttr attributes;
282 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
285 attributes.window_type = GDK_WINDOW_CHILD;
286 attributes.wclass = GDK_INPUT_OUTPUT;
287 attributes.visual = gtk_widget_get_visual (widget);
288 attributes.colormap = gtk_widget_get_colormap (widget);
290 attributes.x = widget->allocation.x;
291 attributes.y = widget->allocation.y;
292 attributes.width = widget->allocation.width;
293 attributes.height = widget->allocation.height;
294 attributes.event_mask = 0;
296 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
298 GDK_WA_X | GDK_WA_Y |
301 gdk_window_set_user_data (widget->window, widget);
302 widget->style = gtk_style_attach (widget->style, widget->window);
303 gdk_window_set_background (widget->window, &widget->style->mid[widget->state]);
307 attributes.width = MAX (widget->allocation.width, widget->requisition.width);
308 attributes.height = MAX (widget->allocation.height, widget->requisition.height);
309 attributes.event_mask = GDK_EXPOSURE_MASK |
310 GDK_BUTTON_PRESS_MASK |
311 GDK_BUTTON_RELEASE_MASK |
314 GDK_POINTER_MOTION_MASK |
315 GDK_LEAVE_NOTIFY_MASK;
317 view->bin_window = gdk_window_new (widget->window,
319 GDK_WA_X | GDK_WA_Y |
322 gdk_window_set_user_data (view->bin_window, widget);
323 gdk_window_show (view->bin_window);
325 widget->style = gtk_style_attach (widget->style, view->bin_window);
326 gdk_window_set_background (view->bin_window, &widget->style->mid[widget->state]);
328 if (view->document) {
329 ev_document_set_target (view->document, view->bin_window);
331 /* We can't get page size without a target, so we have to
332 * queue a size request at realization. Could be fixed
333 * with EvDocument changes to allow setting a GdkScreen
334 * without setting a target.
336 gtk_widget_queue_resize (widget);
341 ev_view_unrealize (GtkWidget *widget)
343 EvView *view = EV_VIEW (widget);
346 ev_document_set_target (view->document, NULL);
348 gdk_window_set_user_data (view->bin_window, NULL);
349 gdk_window_destroy (view->bin_window);
350 view->bin_window = NULL;
352 GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget);
356 ev_gdk_color_to_rgb (const GdkColor *color)
359 result = (0xff0000 | (color->red & 0xff00));
361 result |= ((color->green & 0xff00) | (color->blue >> 8));
366 draw_rubberband (GtkWidget *widget, GdkWindow *window,
367 const GdkRectangle *rect, guchar alpha)
371 GdkColor *fill_color_gdk;
374 fill_color_gdk = gdk_color_copy (>K_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
375 fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
377 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
378 rect->width, rect->height);
379 gdk_pixbuf_fill (pixbuf, fill_color);
381 gdk_draw_pixbuf (window, NULL, pixbuf,
384 rect->width, rect->height,
388 g_object_unref (pixbuf);
390 gc = gdk_gc_new (window);
391 gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
392 gdk_draw_rectangle (window, gc, FALSE,
398 gdk_color_free (fill_color_gdk);
402 highlight_find_results (EvView *view)
404 EvDocumentFind *find;
407 g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document));
409 find = EV_DOCUMENT_FIND (view->document);
411 results = ev_document_find_get_n_results (find);
413 for (i = 0; i < results; i++) {
414 GdkRectangle rectangle;
417 alpha = (i == view->find_result) ? 0x90 : 0x20;
418 ev_document_find_get_result (find, i, &rectangle);
419 draw_rubberband (GTK_WIDGET (view), view->bin_window,
426 expose_bin_window (GtkWidget *widget,
427 GdkEventExpose *event)
429 EvView *view = EV_VIEW (widget);
430 int x_offset, y_offset;
434 int target_width, target_height;
436 if (view->document == NULL)
439 ev_document_get_page_size (view->document, -1,
441 ev_document_misc_get_page_border_size (width, height, &border);
443 x_offset = view->spacing;
444 y_offset = view->spacing;
445 target_width = width + border.left + border.right + view->spacing * 2;
446 target_height = height + border.top + border.bottom + view->spacing * 2;
448 x_offset += MAX (0, (widget->allocation.width - target_width) / 2);
449 y_offset += MAX (0, (widget->allocation.height - target_height) / 2);
451 /* Paint the frame */
454 area.width = width + border.left + border.right;
455 area.height = height + border.top + border.bottom;
456 ev_document_misc_paint_one_page (view->bin_window, widget, &area, &border);
458 /* Render the document itself */
459 ev_document_set_page_offset (view->document,
460 x_offset + border.left,
461 y_offset + border.top);
463 LOG ("Render area %d %d %d %d", event->area.x, event->area.y,
464 event->area.width, event->area.height);
466 ev_document_render (view->document,
467 event->area.x, event->area.y,
468 event->area.width, event->area.height);
470 if (EV_IS_DOCUMENT_FIND (view->document)) {
471 highlight_find_results (view);
474 if (view->has_selection) {
475 draw_rubberband (widget, view->bin_window,
476 &view->selection, 0x40);
481 ev_view_expose_event (GtkWidget *widget,
482 GdkEventExpose *event)
484 EvView *view = EV_VIEW (widget);
486 if (event->window == view->bin_window)
487 expose_bin_window (widget, event);
489 return GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event (widget, event);
495 ev_view_select_all (EvView *ev_view)
497 GtkWidget *widget = GTK_WIDGET (ev_view);
499 g_return_if_fail (EV_IS_VIEW (ev_view));
501 ev_view->has_selection = TRUE;
502 ev_view->selection.x = ev_view->selection.y = 0;
503 ev_view->selection.width = widget->requisition.width;
504 ev_view->selection.height = widget->requisition.height;
506 gtk_widget_queue_draw (widget);
510 ev_view_copy (EvView *ev_view)
512 GtkClipboard *clipboard;
515 text = ev_document_get_text (ev_view->document, &ev_view->selection);
516 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
517 GDK_SELECTION_CLIPBOARD);
518 gtk_clipboard_set_text (clipboard, text, -1);
523 ev_view_primary_get_cb (GtkClipboard *clipboard,
524 GtkSelectionData *selection_data,
528 EvView *ev_view = EV_VIEW (data);
531 text = ev_document_get_text (ev_view->document, &ev_view->selection);
532 gtk_selection_data_set_text (selection_data, text, -1);
536 ev_view_primary_clear_cb (GtkClipboard *clipboard,
539 EvView *ev_view = EV_VIEW (data);
541 ev_view->has_selection = FALSE;
545 ev_view_update_primary_selection (EvView *ev_view)
547 GtkClipboard *clipboard;
549 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
550 GDK_SELECTION_PRIMARY);
552 if (ev_view->has_selection) {
553 if (!gtk_clipboard_set_with_owner (clipboard,
555 G_N_ELEMENTS (targets),
556 ev_view_primary_get_cb,
557 ev_view_primary_clear_cb,
559 ev_view_primary_clear_cb (clipboard, ev_view);
561 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
562 gtk_clipboard_clear (clipboard);
567 ev_view_button_press_event (GtkWidget *widget,
568 GdkEventButton *event)
570 EvView *view = EV_VIEW (widget);
572 if (!GTK_WIDGET_HAS_FOCUS (widget)) {
573 gtk_widget_grab_focus (widget);
576 view->pressed_button = event->button;
578 switch (event->button) {
580 if (view->has_selection) {
581 view->has_selection = FALSE;
582 gtk_widget_queue_draw (widget);
585 view->selection_start.x = event->x;
586 view->selection_start.y = event->y;
594 status_message_from_link (EvLink *link)
600 type = ev_link_get_link_type (link);
603 case EV_LINK_TYPE_TITLE:
604 msg = g_strdup (ev_link_get_title (link));
606 case EV_LINK_TYPE_PAGE:
607 page = ev_link_get_page (link);
608 msg = g_strdup_printf (_("Go to page %d"), page);
610 case EV_LINK_TYPE_EXTERNAL_URI:
611 msg = g_strdup (ev_link_get_uri (link));
621 ev_view_set_status (EvView *view, const char *message)
623 g_return_if_fail (EV_IS_VIEW (view));
625 if (message != view->status) {
626 g_free (view->status);
627 view->status = g_strdup (message);
628 g_object_notify (G_OBJECT (view), "status");
633 ev_view_set_find_status (EvView *view, const char *message)
635 g_return_if_fail (EV_IS_VIEW (view));
637 g_free (view->find_status);
638 view->find_status = g_strdup (message);
639 g_object_notify (G_OBJECT (view), "find-status");
643 ev_view_create_invisible_cursor(void)
646 GdkColor black = { 0, 0, 0, 0 };
647 static unsigned char bits[] = { 0x00 };
649 empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
651 return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
655 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
657 GdkCursor *cursor = NULL;
661 if (view->cursor == new_cursor) {
665 widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
666 display = gtk_widget_get_display (widget);
667 view->cursor = new_cursor;
669 switch (new_cursor) {
670 case EV_VIEW_CURSOR_NORMAL:
671 gdk_window_set_cursor (widget->window, NULL);
673 case EV_VIEW_CURSOR_LINK:
674 cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
676 case EV_VIEW_CURSOR_WAIT:
677 cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
679 case EV_VIEW_CURSOR_HIDDEN:
680 cursor = ev_view_create_invisible_cursor ();
686 gdk_window_set_cursor (widget->window, cursor);
687 gdk_cursor_unref (cursor);
693 ev_view_motion_notify_event (GtkWidget *widget,
694 GdkEventMotion *event)
696 EvView *view = EV_VIEW (widget);
698 if (view->pressed_button > 0) {
699 view->has_selection = TRUE;
700 view->selection.x = MIN (view->selection_start.x, event->x);
701 view->selection.y = MIN (view->selection_start.y, event->y);
702 view->selection.width = ABS (view->selection_start.x - event->x) + 1;
703 view->selection.height = ABS (view->selection_start.y - event->y) + 1;
705 gtk_widget_queue_draw (widget);
706 } else if (view->document) {
709 link = ev_document_get_link (view->document, event->x, event->y);
713 msg = status_message_from_link (link);
714 ev_view_set_status (view, msg);
715 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
718 g_object_unref (link);
720 ev_view_set_status (view, NULL);
721 if (view->cursor == EV_VIEW_CURSOR_LINK) {
722 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
731 ev_view_button_release_event (GtkWidget *widget,
732 GdkEventButton *event)
734 EvView *view = EV_VIEW (widget);
736 view->pressed_button = -1;
738 if (view->has_selection) {
739 ev_view_update_primary_selection (view);
740 } else if (view->document) {
743 link = ev_document_get_link (view->document,
747 ev_view_go_to_link (view, link);
748 g_object_unref (link);
756 on_adjustment_value_changed (GtkAdjustment *adjustment,
759 view_update_adjustments (view);
763 set_scroll_adjustment (EvView *view,
764 GtkOrientation orientation,
765 GtkAdjustment *adjustment)
767 GtkAdjustment **to_set;
769 if (orientation == GTK_ORIENTATION_HORIZONTAL)
770 to_set = &view->hadjustment;
772 to_set = &view->vadjustment;
774 if (*to_set != adjustment) {
776 g_signal_handlers_disconnect_by_func (*to_set,
777 (gpointer) on_adjustment_value_changed,
779 g_object_unref (*to_set);
782 *to_set = adjustment;
783 view_set_adjustment_values (view, orientation);
786 g_object_ref (*to_set);
787 g_signal_connect (*to_set, "value_changed",
788 G_CALLBACK (on_adjustment_value_changed), view);
794 ev_view_set_scroll_adjustments (EvView *view,
795 GtkAdjustment *hadjustment,
796 GtkAdjustment *vadjustment)
798 set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
799 set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
801 view_update_adjustments (view);
805 add_scroll_binding (GtkBindingSet *binding_set,
807 GtkScrollType scroll,
810 guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
812 gtk_binding_entry_add_signal (binding_set, keyval, 0,
814 GTK_TYPE_SCROLL_TYPE, scroll,
815 G_TYPE_BOOLEAN, horizontal);
816 gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
818 GTK_TYPE_SCROLL_TYPE, scroll,
819 G_TYPE_BOOLEAN, horizontal);
823 ev_view_scroll_view (EvView *view,
824 GtkScrollType scroll,
827 if (scroll == GTK_SCROLL_PAGE_BACKWARD) {
828 ev_view_set_page (view, ev_view_get_page (view) - 1);
829 } else if (scroll == GTK_SCROLL_PAGE_FORWARD) {
830 ev_view_set_page (view, ev_view_get_page (view) + 1);
832 GtkAdjustment *adjustment;
836 adjustment = view->hadjustment;
838 adjustment = view->vadjustment;
841 value = adjustment->value;
844 case GTK_SCROLL_STEP_BACKWARD:
845 value -= adjustment->step_increment;
847 case GTK_SCROLL_STEP_FORWARD:
848 value += adjustment->step_increment;
854 value = CLAMP (value, adjustment->lower,
855 adjustment->upper - adjustment->page_size);
857 gtk_adjustment_set_value (adjustment, value);
862 ev_view_set_property (GObject *object,
871 case PROP_FIND_STATUS:
877 ev_view_get_property (GObject *object,
882 EvView *view = EV_VIEW (object);
887 g_value_set_string (value, view->status);
889 case PROP_FIND_STATUS:
890 g_value_set_string (value, view->status);
896 ev_view_class_init (EvViewClass *class)
898 GObjectClass *object_class = G_OBJECT_CLASS (class);
899 GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
900 GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
901 GtkBindingSet *binding_set;
903 object_class->finalize = ev_view_finalize;
904 object_class->set_property = ev_view_set_property;
905 object_class->get_property = ev_view_get_property;
907 widget_class->expose_event = ev_view_expose_event;
908 widget_class->button_press_event = ev_view_button_press_event;
909 widget_class->motion_notify_event = ev_view_motion_notify_event;
910 widget_class->button_release_event = ev_view_button_release_event;
911 widget_class->size_request = ev_view_size_request;
912 widget_class->size_allocate = ev_view_size_allocate;
913 widget_class->realize = ev_view_realize;
914 widget_class->unrealize = ev_view_unrealize;
915 gtk_object_class->destroy = ev_view_destroy;
917 class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
918 class->scroll_view = ev_view_scroll_view;
920 widget_class->set_scroll_adjustments_signal = g_signal_new ("set-scroll-adjustments",
921 G_OBJECT_CLASS_TYPE (object_class),
922 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
923 G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
925 ev_marshal_VOID__OBJECT_OBJECT,
928 GTK_TYPE_ADJUSTMENT);
929 page_changed_signal = g_signal_new ("page-changed",
930 G_OBJECT_CLASS_TYPE (object_class),
931 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
932 G_STRUCT_OFFSET (EvViewClass, page_changed),
934 ev_marshal_VOID__NONE,
937 g_signal_new ("scroll_view",
938 G_TYPE_FROM_CLASS (object_class),
939 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
940 G_STRUCT_OFFSET (EvViewClass, scroll_view),
942 ev_marshal_VOID__ENUM_BOOLEAN,
944 GTK_TYPE_SCROLL_TYPE,
947 g_object_class_install_property (object_class,
949 g_param_spec_string ("status",
951 "The status message",
955 g_object_class_install_property (object_class,
957 g_param_spec_string ("find-status",
958 "Find Status Message",
959 "The find status message",
963 binding_set = gtk_binding_set_by_class (class);
965 add_scroll_binding (binding_set, GDK_Left, GTK_SCROLL_STEP_BACKWARD, TRUE);
966 add_scroll_binding (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD, TRUE);
967 add_scroll_binding (binding_set, GDK_Up, GTK_SCROLL_STEP_BACKWARD, FALSE);
968 add_scroll_binding (binding_set, GDK_Down, GTK_SCROLL_STEP_FORWARD, FALSE);
970 add_scroll_binding (binding_set, GDK_Page_Up, GTK_SCROLL_PAGE_BACKWARD, FALSE);
971 add_scroll_binding (binding_set, GDK_Page_Down, GTK_SCROLL_PAGE_FORWARD, FALSE);
975 ev_view_init (EvView *view)
977 GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
981 view->pressed_button = -1;
982 view->cursor = EV_VIEW_CURSOR_NORMAL;
983 view->sizing_mode = EV_SIZING_BEST_FIT;
987 update_find_status_message (EvView *view)
991 if (ev_document_get_page (view->document) == view->find_page) {
994 results = ev_document_find_get_n_results
995 (EV_DOCUMENT_FIND (view->document));
997 message = g_strdup_printf (_("%d found on this page"),
1002 percent = ev_document_find_get_progress
1003 (EV_DOCUMENT_FIND (view->document));
1005 if (percent >= (1.0 - 1e-10)) {
1006 message = g_strdup (_("Not found"));
1008 message = g_strdup_printf (_("%3d%% remaining to search"),
1009 (int) ((1.0 - percent) * 100));
1014 ev_view_set_find_status (view, message);
1019 set_document_page (EvView *view, int new_page)
1024 pages = ev_document_get_n_pages (view->document);
1025 page = CLAMP (new_page, 1, pages);
1027 if (view->document) {
1028 int old_page = ev_document_get_page (view->document);
1029 int old_width, old_height;
1031 ev_document_get_page_size (view->document,
1033 &old_width, &old_height);
1035 if (old_page != page) {
1036 if (view->cursor != EV_VIEW_CURSOR_HIDDEN) {
1037 ev_view_set_cursor (view, EV_VIEW_CURSOR_WAIT);
1039 ev_document_set_page (view->document, page);
1042 if (old_page != ev_document_get_page (view->document)) {
1045 g_signal_emit (view, page_changed_signal, 0);
1047 view->has_selection = FALSE;
1048 ev_document_get_page_size (view->document,
1051 if (width != old_width || height != old_height)
1052 gtk_widget_queue_resize (GTK_WIDGET (view));
1054 gtk_adjustment_set_value (view->vadjustment,
1055 view->vadjustment->lower);
1058 if (EV_IS_DOCUMENT_FIND (view->document)) {
1059 view->find_page = page;
1060 view->find_result = 0;
1061 update_find_status_message (view);
1069 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
1071 GtkWidget *widget = GTK_WIDGET (view);
1072 GtkAdjustment *adjustment;
1075 adjustment = view->vadjustment;
1077 if (rect->y < adjustment->value) {
1078 value = MAX (adjustment->lower, rect->y - MARGIN);
1079 gtk_adjustment_set_value (view->vadjustment, value);
1080 } else if (rect->y + rect->height >
1081 adjustment->value + widget->allocation.height) {
1082 value = MIN (adjustment->upper, rect->y + rect->height -
1083 widget->allocation.height + MARGIN);
1084 gtk_adjustment_set_value (view->vadjustment, value);
1087 adjustment = view->hadjustment;
1089 if (rect->x < adjustment->value) {
1090 value = MAX (adjustment->lower, rect->x - MARGIN);
1091 gtk_adjustment_set_value (view->hadjustment, value);
1092 } else if (rect->x + rect->height >
1093 adjustment->value + widget->allocation.width) {
1094 value = MIN (adjustment->upper, rect->x + rect->width -
1095 widget->allocation.width + MARGIN);
1096 gtk_adjustment_set_value (view->hadjustment, value);
1101 jump_to_find_result (EvView *view)
1103 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1107 n_results = ev_document_find_get_n_results (find);
1109 if (n_results > view->find_result) {
1110 ev_document_find_get_result
1111 (find, view->find_result, &rect);
1112 ensure_rectangle_is_visible (view, &rect);
1117 jump_to_find_page (EvView *view)
1121 n_pages = ev_document_get_n_pages (view->document);
1123 for (i = 0; i <= n_pages; i++) {
1127 page = i + view->find_page;
1128 if (page > n_pages) {
1129 page = page - n_pages;
1132 has_results = ev_document_find_page_has_results
1133 (EV_DOCUMENT_FIND (view->document), page);
1134 if (has_results == -1) {
1135 view->find_page = page;
1137 } else if (has_results == 1) {
1138 set_document_page (view, page);
1139 jump_to_find_result (view);
1146 find_changed_cb (EvDocument *document, int page, EvView *view)
1148 jump_to_find_page (view);
1149 jump_to_find_result (view);
1150 update_find_status_message (view);
1152 if (ev_document_get_page (document) == page) {
1153 gtk_widget_queue_draw (GTK_WIDGET (view));
1158 document_changed_callback (EvDocument *document,
1161 gtk_widget_queue_draw (GTK_WIDGET (view));
1163 if (view->cursor != EV_VIEW_CURSOR_HIDDEN) {
1164 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1168 /*** Public API ***/
1173 return g_object_new (EV_TYPE_VIEW, NULL);
1177 ev_view_set_document (EvView *view,
1178 EvDocument *document)
1180 g_return_if_fail (EV_IS_VIEW (view));
1182 if (document != view->document) {
1183 if (view->document) {
1184 g_signal_handlers_disconnect_by_func (view->document,
1187 g_object_unref (view->document);
1190 view->document = document;
1191 view->find_page = 1;
1192 view->find_result = 0;
1194 if (view->document) {
1195 g_object_ref (view->document);
1196 if (EV_IS_DOCUMENT_FIND (view->document)) {
1197 g_signal_connect (view->document,
1199 G_CALLBACK (find_changed_cb),
1202 g_signal_connect (view->document,
1204 G_CALLBACK (document_changed_callback),
1208 if (GTK_WIDGET_REALIZED (view))
1209 ev_document_set_target (view->document, view->bin_window);
1211 gtk_widget_queue_resize (GTK_WIDGET (view));
1213 g_signal_emit (view, page_changed_signal, 0);
1218 ev_view_set_mode (EvView *view,
1219 EvSizingMode sizing_mode)
1221 if (view->sizing_mode == sizing_mode)
1224 view->sizing_mode = sizing_mode;
1225 gtk_widget_queue_resize (GTK_WIDGET (view));
1229 go_to_link (EvView *view, EvLink *link)
1235 type = ev_link_get_link_type (link);
1238 case EV_LINK_TYPE_TITLE:
1240 case EV_LINK_TYPE_PAGE:
1241 page = ev_link_get_page (link);
1242 set_document_page (view, page);
1244 case EV_LINK_TYPE_EXTERNAL_URI:
1245 uri = ev_link_get_uri (link);
1246 gnome_vfs_url_show (uri);
1252 ev_view_go_to_link (EvView *view, EvLink *link)
1254 go_to_link (view, link);
1258 ev_view_set_page (EvView *view,
1261 g_return_if_fail (EV_IS_VIEW (view));
1263 set_document_page (view, page);
1267 ev_view_get_page (EvView *view)
1270 return ev_document_get_page (view->document);
1276 ev_view_zoom (EvView *view,
1283 scale = view->scale * factor;
1287 scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
1289 if (ABS (scale - view->scale) < ZOOM_EPSILON)
1292 view->scale = scale;
1294 ev_document_set_scale (view->document, view->scale);
1296 gtk_widget_queue_resize (GTK_WIDGET (view));
1300 ev_view_zoom_in (EvView *view)
1302 ev_view_zoom (view, ZOOM_IN_FACTOR, TRUE);
1306 ev_view_zoom_out (EvView *view)
1308 ev_view_zoom (view, ZOOM_OUT_FACTOR, TRUE);
1312 ev_view_normal_size (EvView *view)
1314 ev_view_zoom (view, 1.0, FALSE);
1317 /* Unfortunately this is not idempotent (!) (numerical stability
1318 * issues because width and height are rounded) */
1320 ev_view_best_fit (EvView *view, int allocation_width, int allocation_height)
1322 int target_width, target_height;
1326 if (view->document == NULL)
1330 /* This is the bad part. You could make it stable by doing
1331 * ev_document_set_scale 1.0. But at least with pdf this means
1332 * redrawing the whole page */
1333 ev_document_get_page_size (view->document, -1, &width, &height);
1334 /* FIXME: The border size isn't constant. Ugh. Still, if we have extra
1335 * space, we just cut it from the border */
1336 ev_document_misc_get_page_border_size (width, height, &border);
1338 target_width = allocation_width - (view->spacing * 2 + border.left + border.right);
1339 target_height = allocation_height - (view->spacing * 2 + border.top + border.bottom);
1341 LOG ("Best fit %d %d", allocation_width, allocation_height);
1343 if (width != 0 && height != 0) {
1345 double scale_w, scale_h;
1347 scale_w = (double)target_width * view->scale / width;
1348 scale_h = (double)target_height * view->scale / height;
1350 scale = (scale_w < scale_h) ? scale_w : scale_h;
1352 ev_view_zoom (view, scale, FALSE);
1358 ev_view_fit_width (EvView *view, int allocation_width, int allocation_height,
1361 int target_width, target_height;
1365 if (view->document == NULL)
1369 ev_document_get_page_size (view->document, -1, &width, &height);
1370 ev_document_misc_get_page_border_size (width, height, &border);
1372 target_width = allocation_width - (view->spacing * 2 + border.left + border.right);
1373 target_height = allocation_height - (view->spacing * 2 + border.top + border.bottom);
1377 scale = (double)target_width * view->scale / width;
1379 if (height * scale / view->scale > target_height)
1380 scale = ((double)(target_width - vsb_width) * view->scale / width);
1382 ev_view_zoom (view, scale, FALSE);
1387 ev_view_get_status (EvView *view)
1389 g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1391 return view->status;
1395 ev_view_get_find_status (EvView *view)
1397 g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1399 return view->find_status;
1403 ev_view_find_next (EvView *view)
1405 int n_results, n_pages;
1406 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1408 n_results = ev_document_find_get_n_results (find);
1409 n_pages = ev_document_get_n_pages (view->document);
1411 view->find_result++;
1413 if (view->find_result >= n_results) {
1414 view->find_result = 0;
1417 if (view->find_page > n_pages) {
1418 view->find_page = 1;
1421 jump_to_find_page (view);
1423 jump_to_find_result (view);
1424 gtk_widget_queue_draw (GTK_WIDGET (view));
1429 ev_view_find_previous (EvView *view)
1431 int n_results, n_pages;
1432 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1434 n_results = ev_document_find_get_n_results (find);
1435 n_pages = ev_document_get_n_pages (view->document);
1437 view->find_result--;
1439 if (view->find_result < 0) {
1440 view->find_result = 0;
1443 if (view->find_page < 1) {
1444 view->find_page = n_pages;
1447 jump_to_find_page (view);
1449 jump_to_find_result (view);
1450 gtk_widget_queue_draw (GTK_WIDGET (view));
1454 ev_view_hide_cursor (EvView *view)
1456 ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
1460 ev_view_show_cursor (EvView *view)
1462 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);