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;
95 gboolean pressed_button;
96 gboolean has_selection;
97 GdkPoint selection_start;
98 GdkRectangle selection;
101 GtkAdjustment *hadjustment;
102 GtkAdjustment *vadjustment;
109 EvSizingMode sizing_mode;
112 struct _EvViewClass {
113 GtkWidgetClass parent_class;
115 void (*set_scroll_adjustments) (EvView *view,
116 GtkAdjustment *hadjustment,
117 GtkAdjustment *vadjustment);
118 void (*scroll_view) (EvView *view,
119 GtkScrollType scroll,
120 gboolean horizontal);
122 /* Should this be notify::page? */
123 void (*page_changed) (EvView *view);
126 static guint page_changed_signal = 0;
128 static void ev_view_set_scroll_adjustments (EvView *view,
129 GtkAdjustment *hadjustment,
130 GtkAdjustment *vadjustment);
132 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
134 /*** Helper functions ***/
137 view_update_adjustments (EvView *view)
139 int old_x = view->scroll_x;
140 int old_y = view->scroll_y;
142 if (view->hadjustment)
143 view->scroll_x = view->hadjustment->value;
147 if (view->vadjustment)
148 view->scroll_y = view->vadjustment->value;
152 if (GTK_WIDGET_REALIZED (view) &&
153 (view->scroll_x != old_x || view->scroll_y != old_y)) {
154 gdk_window_move (view->bin_window, - view->scroll_x, - view->scroll_y);
155 gdk_window_process_updates (view->bin_window, TRUE);
160 view_set_adjustment_values (EvView *view,
161 GtkOrientation orientation)
163 GtkWidget *widget = GTK_WIDGET (view);
164 GtkAdjustment *adjustment;
165 gboolean value_changed = FALSE;
169 if (orientation == GTK_ORIENTATION_HORIZONTAL) {
170 requisition = widget->requisition.width;
171 allocation = widget->allocation.width;
172 adjustment = view->hadjustment;
174 requisition = widget->requisition.height;
175 allocation = widget->allocation.height;
176 adjustment = view->vadjustment;
182 adjustment->page_size = allocation;
183 adjustment->step_increment = allocation * 0.1;
184 adjustment->page_increment = allocation * 0.9;
185 adjustment->lower = 0;
186 adjustment->upper = MAX (allocation, requisition);
188 if (adjustment->value > adjustment->upper - adjustment->page_size) {
189 adjustment->value = adjustment->upper - adjustment->page_size;
190 value_changed = TRUE;
193 gtk_adjustment_changed (adjustment);
195 gtk_adjustment_value_changed (adjustment);
198 /*** Virtual function implementations ***/
201 ev_view_finalize (GObject *object)
203 EvView *view = EV_VIEW (object);
208 g_object_unref (view->document);
210 ev_view_set_scroll_adjustments (view, NULL, NULL);
212 G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
216 ev_view_destroy (GtkObject *object)
218 EvView *view = EV_VIEW (object);
220 ev_view_set_scroll_adjustments (view, NULL, NULL);
222 GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
226 view_rect_to_doc_rect (EvView *view, GdkRectangle *view_rect, GdkRectangle *doc_rect)
228 doc_rect->x = (view_rect->x - view->x_offset) / view->scale;
229 doc_rect->y = (view_rect->y - view->y_offset) / view->scale;
230 doc_rect->width = view_rect->width / view->scale;
231 doc_rect->height = view_rect->height / view->scale;
235 doc_rect_to_view_rect (EvView *view, GdkRectangle *doc_rect, GdkRectangle *view_rect)
237 view_rect->x = doc_rect->x * view->scale + view->x_offset;
238 view_rect->y = doc_rect->y * view->scale + view->y_offset;
239 view_rect->width = doc_rect->width * view->scale;
240 view_rect->height = doc_rect->height * view->scale;
244 ev_view_size_request (GtkWidget *widget,
245 GtkRequisition *requisition)
247 EvView *view = EV_VIEW (widget);
251 if (! GTK_WIDGET_REALIZED (widget))
254 if (! view->document) {
255 requisition->width = 1;
256 requisition->height = 1;
260 ev_document_get_page_size (view->document, -1,
262 ev_document_misc_get_page_border_size (width, height, &border);
264 switch (view->sizing_mode) {
265 case EV_SIZING_BEST_FIT:
266 requisition->width = MIN_SCALE * ((float) width) / view->scale;
267 requisition->height = MIN_SCALE * ((float) height) / view->scale;
269 case EV_SIZING_FIT_WIDTH:
270 requisition->width = MIN_SCALE * ((float) width) / view->scale;
271 requisition->height = height + border.top + border.bottom;
272 requisition->height += view->spacing * 2;
275 requisition->width = width + border.left + border.right;
276 requisition->height = height + border.top + border.bottom;
277 requisition->width += view->spacing * 2;
278 requisition->height += view->spacing * 2;
284 ev_view_size_allocate (GtkWidget *widget,
285 GtkAllocation *allocation)
287 EvView *view = EV_VIEW (widget);
288 gint target_width, target_height;
292 GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
294 view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
295 view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
297 if (view->document) {
298 ev_document_get_page_size (view->document, -1,
300 ev_document_misc_get_page_border_size (width, height, &border);
301 view->x_offset = view->spacing;
302 view->y_offset = view->spacing;
303 target_width = width + border.left + border.right + view->spacing * 2;
304 target_height = height + border.top + border.bottom + view->spacing * 2;
305 view->x_offset += MAX (0, (widget->allocation.width - target_width) / 2);
306 view->y_offset += MAX (0, (widget->allocation.height - target_height) / 2);
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);
474 if (view->document == NULL)
477 ev_document_get_page_size (view->document, -1,
479 ev_document_misc_get_page_border_size (width, height, &border);
481 /* Paint the frame */
482 area.x = view->x_offset;
483 area.y = view->y_offset;
484 area.width = width + border.left + border.right;
485 area.height = height + border.top + border.bottom;
486 ev_document_misc_paint_one_page (view->bin_window, widget, &area, &border);
488 /* Render the document itself */
489 ev_document_set_page_offset (view->document,
490 view->x_offset + border.left,
491 view->y_offset + border.top);
493 LOG ("Render area %d %d %d %d", event->area.x, event->area.y,
494 event->area.width, event->area.height);
496 ev_document_render (view->document,
497 event->area.x, event->area.y,
498 event->area.width, event->area.height);
500 if (EV_IS_DOCUMENT_FIND (view->document)) {
501 highlight_find_results (view);
504 if (view->has_selection) {
505 GdkRectangle rubberband;
507 doc_rect_to_view_rect (view, &view->selection, &rubberband);
508 if (rubberband.width > 0 && rubberband.height > 0) {
509 draw_rubberband (widget, view->bin_window,
516 ev_view_expose_event (GtkWidget *widget,
517 GdkEventExpose *event)
519 EvView *view = EV_VIEW (widget);
521 if (event->window == view->bin_window)
522 expose_bin_window (widget, event);
524 return GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event (widget, event);
530 ev_view_select_all (EvView *ev_view)
532 GtkWidget *widget = GTK_WIDGET (ev_view);
533 GdkRectangle selection;
537 g_return_if_fail (EV_IS_VIEW (ev_view));
539 ev_document_get_page_size (ev_view->document, -1, &width, &height);
540 ev_document_misc_get_page_border_size (width, height, &border);
542 ev_view->has_selection = TRUE;
543 selection.x = ev_view->x_offset + border.left;
544 selection.y = ev_view->y_offset + border.top;
545 selection.width = width;
546 selection.height = height;
547 view_rect_to_doc_rect (ev_view, &selection, &ev_view->selection);
549 gtk_widget_queue_draw (widget);
553 ev_view_copy (EvView *ev_view)
555 GtkClipboard *clipboard;
556 GdkRectangle selection;
559 doc_rect_to_view_rect (ev_view, &ev_view->selection, &selection);
560 text = ev_document_get_text (ev_view->document, &selection);
561 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
562 GDK_SELECTION_CLIPBOARD);
563 gtk_clipboard_set_text (clipboard, text, -1);
568 ev_view_primary_get_cb (GtkClipboard *clipboard,
569 GtkSelectionData *selection_data,
573 EvView *ev_view = EV_VIEW (data);
574 GdkRectangle selection;
577 doc_rect_to_view_rect (ev_view, &ev_view->selection, &selection);
578 text = ev_document_get_text (ev_view->document, &selection);
579 gtk_selection_data_set_text (selection_data, text, -1);
583 ev_view_primary_clear_cb (GtkClipboard *clipboard,
586 EvView *ev_view = EV_VIEW (data);
588 ev_view->has_selection = FALSE;
592 ev_view_update_primary_selection (EvView *ev_view)
594 GtkClipboard *clipboard;
596 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
597 GDK_SELECTION_PRIMARY);
599 if (ev_view->has_selection) {
600 if (!gtk_clipboard_set_with_owner (clipboard,
602 G_N_ELEMENTS (targets),
603 ev_view_primary_get_cb,
604 ev_view_primary_clear_cb,
606 ev_view_primary_clear_cb (clipboard, ev_view);
608 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
609 gtk_clipboard_clear (clipboard);
614 ev_view_button_press_event (GtkWidget *widget,
615 GdkEventButton *event)
617 EvView *view = EV_VIEW (widget);
619 if (!GTK_WIDGET_HAS_FOCUS (widget)) {
620 gtk_widget_grab_focus (widget);
623 view->pressed_button = event->button;
625 switch (event->button) {
627 if (view->has_selection) {
628 view->has_selection = FALSE;
629 gtk_widget_queue_draw (widget);
632 view->selection_start.x = event->x;
633 view->selection_start.y = event->y;
641 status_message_from_link (EvLink *link)
647 type = ev_link_get_link_type (link);
650 case EV_LINK_TYPE_TITLE:
651 msg = g_strdup (ev_link_get_title (link));
653 case EV_LINK_TYPE_PAGE:
654 page = ev_link_get_page (link);
655 msg = g_strdup_printf (_("Go to page %d"), page);
657 case EV_LINK_TYPE_EXTERNAL_URI:
658 msg = g_strdup (ev_link_get_uri (link));
668 ev_view_set_status (EvView *view, const char *message)
670 g_return_if_fail (EV_IS_VIEW (view));
672 if (message != view->status) {
673 g_free (view->status);
674 view->status = g_strdup (message);
675 g_object_notify (G_OBJECT (view), "status");
680 ev_view_set_find_status (EvView *view, const char *message)
682 g_return_if_fail (EV_IS_VIEW (view));
684 g_free (view->find_status);
685 view->find_status = g_strdup (message);
686 g_object_notify (G_OBJECT (view), "find-status");
690 ev_view_create_invisible_cursor(void)
693 GdkColor black = { 0, 0, 0, 0 };
694 static unsigned char bits[] = { 0x00 };
696 empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
698 return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
702 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
704 GdkCursor *cursor = NULL;
708 if (view->cursor == new_cursor) {
712 widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
713 display = gtk_widget_get_display (widget);
714 view->cursor = new_cursor;
716 switch (new_cursor) {
717 case EV_VIEW_CURSOR_NORMAL:
718 gdk_window_set_cursor (widget->window, NULL);
720 case EV_VIEW_CURSOR_LINK:
721 cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
723 case EV_VIEW_CURSOR_WAIT:
724 cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
726 case EV_VIEW_CURSOR_HIDDEN:
727 cursor = ev_view_create_invisible_cursor ();
733 gdk_window_set_cursor (widget->window, cursor);
734 gdk_cursor_unref (cursor);
740 ev_view_motion_notify_event (GtkWidget *widget,
741 GdkEventMotion *event)
743 EvView *view = EV_VIEW (widget);
745 if (view->pressed_button > 0) {
746 GdkRectangle selection;
748 view->has_selection = TRUE;
749 selection.x = MIN (view->selection_start.x, event->x);
750 selection.y = MIN (view->selection_start.y, event->y);
751 selection.width = ABS (view->selection_start.x - event->x) + 1;
752 selection.height = ABS (view->selection_start.y - event->y) + 1;
753 view_rect_to_doc_rect (view, &selection, &view->selection);
755 gtk_widget_queue_draw (widget);
756 } else if (view->document) {
759 link = ev_document_get_link (view->document, event->x, event->y);
763 msg = status_message_from_link (link);
764 ev_view_set_status (view, msg);
765 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
768 g_object_unref (link);
770 ev_view_set_status (view, NULL);
771 if (view->cursor == EV_VIEW_CURSOR_LINK) {
772 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
781 ev_view_button_release_event (GtkWidget *widget,
782 GdkEventButton *event)
784 EvView *view = EV_VIEW (widget);
786 view->pressed_button = -1;
788 if (view->has_selection) {
789 ev_view_update_primary_selection (view);
790 } else if (view->document) {
793 link = ev_document_get_link (view->document,
797 ev_view_go_to_link (view, link);
798 g_object_unref (link);
806 on_adjustment_value_changed (GtkAdjustment *adjustment,
809 view_update_adjustments (view);
813 set_scroll_adjustment (EvView *view,
814 GtkOrientation orientation,
815 GtkAdjustment *adjustment)
817 GtkAdjustment **to_set;
819 if (orientation == GTK_ORIENTATION_HORIZONTAL)
820 to_set = &view->hadjustment;
822 to_set = &view->vadjustment;
824 if (*to_set != adjustment) {
826 g_signal_handlers_disconnect_by_func (*to_set,
827 (gpointer) on_adjustment_value_changed,
829 g_object_unref (*to_set);
832 *to_set = adjustment;
833 view_set_adjustment_values (view, orientation);
836 g_object_ref (*to_set);
837 g_signal_connect (*to_set, "value_changed",
838 G_CALLBACK (on_adjustment_value_changed), view);
844 ev_view_set_scroll_adjustments (EvView *view,
845 GtkAdjustment *hadjustment,
846 GtkAdjustment *vadjustment)
848 set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
849 set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
851 view_update_adjustments (view);
855 add_scroll_binding (GtkBindingSet *binding_set,
857 GtkScrollType scroll,
860 guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
862 gtk_binding_entry_add_signal (binding_set, keyval, 0,
864 GTK_TYPE_SCROLL_TYPE, scroll,
865 G_TYPE_BOOLEAN, horizontal);
866 gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0,
868 GTK_TYPE_SCROLL_TYPE, scroll,
869 G_TYPE_BOOLEAN, horizontal);
873 ev_view_scroll_view (EvView *view,
874 GtkScrollType scroll,
877 if (scroll == GTK_SCROLL_PAGE_BACKWARD) {
878 ev_view_set_page (view, ev_view_get_page (view) - 1);
879 } else if (scroll == GTK_SCROLL_PAGE_FORWARD) {
880 ev_view_set_page (view, ev_view_get_page (view) + 1);
882 GtkAdjustment *adjustment;
886 adjustment = view->hadjustment;
888 adjustment = view->vadjustment;
891 value = adjustment->value;
894 case GTK_SCROLL_STEP_BACKWARD:
895 value -= adjustment->step_increment;
897 case GTK_SCROLL_STEP_FORWARD:
898 value += adjustment->step_increment;
904 value = CLAMP (value, adjustment->lower,
905 adjustment->upper - adjustment->page_size);
907 gtk_adjustment_set_value (adjustment, value);
912 ev_view_set_property (GObject *object,
921 case PROP_FIND_STATUS:
927 ev_view_get_property (GObject *object,
932 EvView *view = EV_VIEW (object);
937 g_value_set_string (value, view->status);
939 case PROP_FIND_STATUS:
940 g_value_set_string (value, view->status);
946 ev_view_class_init (EvViewClass *class)
948 GObjectClass *object_class = G_OBJECT_CLASS (class);
949 GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
950 GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
951 GtkBindingSet *binding_set;
953 object_class->finalize = ev_view_finalize;
954 object_class->set_property = ev_view_set_property;
955 object_class->get_property = ev_view_get_property;
957 widget_class->expose_event = ev_view_expose_event;
958 widget_class->button_press_event = ev_view_button_press_event;
959 widget_class->motion_notify_event = ev_view_motion_notify_event;
960 widget_class->button_release_event = ev_view_button_release_event;
961 widget_class->size_request = ev_view_size_request;
962 widget_class->size_allocate = ev_view_size_allocate;
963 widget_class->realize = ev_view_realize;
964 widget_class->unrealize = ev_view_unrealize;
965 gtk_object_class->destroy = ev_view_destroy;
967 class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
968 class->scroll_view = ev_view_scroll_view;
970 widget_class->set_scroll_adjustments_signal = g_signal_new ("set-scroll-adjustments",
971 G_OBJECT_CLASS_TYPE (object_class),
972 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
973 G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
975 ev_marshal_VOID__OBJECT_OBJECT,
978 GTK_TYPE_ADJUSTMENT);
979 page_changed_signal = g_signal_new ("page-changed",
980 G_OBJECT_CLASS_TYPE (object_class),
981 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
982 G_STRUCT_OFFSET (EvViewClass, page_changed),
984 ev_marshal_VOID__NONE,
987 g_signal_new ("scroll_view",
988 G_TYPE_FROM_CLASS (object_class),
989 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
990 G_STRUCT_OFFSET (EvViewClass, scroll_view),
992 ev_marshal_VOID__ENUM_BOOLEAN,
994 GTK_TYPE_SCROLL_TYPE,
997 g_object_class_install_property (object_class,
999 g_param_spec_string ("status",
1001 "The status message",
1005 g_object_class_install_property (object_class,
1007 g_param_spec_string ("find-status",
1008 "Find Status Message",
1009 "The find status message",
1013 binding_set = gtk_binding_set_by_class (class);
1015 add_scroll_binding (binding_set, GDK_Left, GTK_SCROLL_STEP_BACKWARD, TRUE);
1016 add_scroll_binding (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD, TRUE);
1017 add_scroll_binding (binding_set, GDK_Up, GTK_SCROLL_STEP_BACKWARD, FALSE);
1018 add_scroll_binding (binding_set, GDK_Down, GTK_SCROLL_STEP_FORWARD, FALSE);
1020 add_scroll_binding (binding_set, GDK_Page_Up, GTK_SCROLL_PAGE_BACKWARD, FALSE);
1021 add_scroll_binding (binding_set, GDK_Page_Down, GTK_SCROLL_PAGE_FORWARD, FALSE);
1025 ev_view_init (EvView *view)
1027 GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
1031 view->pressed_button = -1;
1032 view->cursor = EV_VIEW_CURSOR_NORMAL;
1033 view->sizing_mode = EV_SIZING_BEST_FIT;
1037 update_find_status_message (EvView *view)
1041 if (ev_document_get_page (view->document) == view->find_page) {
1044 results = ev_document_find_get_n_results
1045 (EV_DOCUMENT_FIND (view->document));
1047 /* TRANS: Sometimes this could be better translated as
1048 "%d hit(s) on this page". Therefore this string
1049 contains plural cases. */
1050 message = g_strdup_printf (ngettext ("%d found on this page",
1051 "%d found on this page",
1057 percent = ev_document_find_get_progress
1058 (EV_DOCUMENT_FIND (view->document));
1060 if (percent >= (1.0 - 1e-10)) {
1061 message = g_strdup (_("Not found"));
1063 message = g_strdup_printf (_("%3d%% remaining to search"),
1064 (int) ((1.0 - percent) * 100));
1069 ev_view_set_find_status (view, message);
1074 set_document_page (EvView *view, int new_page)
1079 pages = ev_document_get_n_pages (view->document);
1080 page = CLAMP (new_page, 1, pages);
1082 if (view->document) {
1083 int old_page = ev_document_get_page (view->document);
1084 int old_width, old_height;
1086 ev_document_get_page_size (view->document,
1088 &old_width, &old_height);
1090 if (old_page != page) {
1091 if (view->cursor != EV_VIEW_CURSOR_HIDDEN) {
1092 ev_view_set_cursor (view, EV_VIEW_CURSOR_WAIT);
1094 ev_document_set_page (view->document, page);
1097 if (old_page != ev_document_get_page (view->document)) {
1100 g_signal_emit (view, page_changed_signal, 0);
1102 view->has_selection = FALSE;
1103 ev_document_get_page_size (view->document,
1106 if (width != old_width || height != old_height)
1107 gtk_widget_queue_resize (GTK_WIDGET (view));
1109 gtk_adjustment_set_value (view->vadjustment,
1110 view->vadjustment->lower);
1113 if (EV_IS_DOCUMENT_FIND (view->document)) {
1114 view->find_page = page;
1115 view->find_result = 0;
1116 update_find_status_message (view);
1124 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
1126 GtkWidget *widget = GTK_WIDGET (view);
1127 GtkAdjustment *adjustment;
1130 adjustment = view->vadjustment;
1132 if (rect->y < adjustment->value) {
1133 value = MAX (adjustment->lower, rect->y - MARGIN);
1134 gtk_adjustment_set_value (view->vadjustment, value);
1135 } else if (rect->y + rect->height >
1136 adjustment->value + widget->allocation.height) {
1137 value = MIN (adjustment->upper, rect->y + rect->height -
1138 widget->allocation.height + MARGIN);
1139 gtk_adjustment_set_value (view->vadjustment, value);
1142 adjustment = view->hadjustment;
1144 if (rect->x < adjustment->value) {
1145 value = MAX (adjustment->lower, rect->x - MARGIN);
1146 gtk_adjustment_set_value (view->hadjustment, value);
1147 } else if (rect->x + rect->height >
1148 adjustment->value + widget->allocation.width) {
1149 value = MIN (adjustment->upper, rect->x + rect->width -
1150 widget->allocation.width + MARGIN);
1151 gtk_adjustment_set_value (view->hadjustment, value);
1156 jump_to_find_result (EvView *view)
1158 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1162 n_results = ev_document_find_get_n_results (find);
1164 if (n_results > view->find_result) {
1165 ev_document_find_get_result
1166 (find, view->find_result, &rect);
1167 ensure_rectangle_is_visible (view, &rect);
1172 jump_to_find_page (EvView *view)
1176 n_pages = ev_document_get_n_pages (view->document);
1178 for (i = 0; i <= n_pages; i++) {
1182 page = i + view->find_page;
1183 if (page > n_pages) {
1184 page = page - n_pages;
1187 has_results = ev_document_find_page_has_results
1188 (EV_DOCUMENT_FIND (view->document), page);
1189 if (has_results == -1) {
1190 view->find_page = page;
1192 } else if (has_results == 1) {
1193 set_document_page (view, page);
1194 jump_to_find_result (view);
1201 find_changed_cb (EvDocument *document, int page, EvView *view)
1203 jump_to_find_page (view);
1204 jump_to_find_result (view);
1205 update_find_status_message (view);
1207 if (ev_document_get_page (document) == page) {
1208 gtk_widget_queue_draw (GTK_WIDGET (view));
1213 document_changed_callback (EvDocument *document,
1216 gtk_widget_queue_draw (GTK_WIDGET (view));
1218 if (view->cursor != EV_VIEW_CURSOR_HIDDEN) {
1219 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1223 /*** Public API ***/
1228 return g_object_new (EV_TYPE_VIEW, NULL);
1232 ev_view_set_document (EvView *view,
1233 EvDocument *document)
1235 g_return_if_fail (EV_IS_VIEW (view));
1237 if (document != view->document) {
1238 if (view->document) {
1239 g_signal_handlers_disconnect_by_func (view->document,
1242 g_object_unref (view->document);
1245 view->document = document;
1246 view->find_page = 1;
1247 view->find_result = 0;
1249 if (view->document) {
1250 g_object_ref (view->document);
1251 if (EV_IS_DOCUMENT_FIND (view->document)) {
1252 g_signal_connect (view->document,
1254 G_CALLBACK (find_changed_cb),
1257 g_signal_connect (view->document,
1259 G_CALLBACK (document_changed_callback),
1263 if (GTK_WIDGET_REALIZED (view))
1264 ev_document_set_target (view->document, view->bin_window);
1266 gtk_widget_queue_resize (GTK_WIDGET (view));
1268 g_signal_emit (view, page_changed_signal, 0);
1273 ev_view_set_mode (EvView *view,
1274 EvSizingMode sizing_mode)
1276 if (view->sizing_mode == sizing_mode)
1279 view->sizing_mode = sizing_mode;
1280 gtk_widget_queue_resize (GTK_WIDGET (view));
1284 go_to_link (EvView *view, EvLink *link)
1290 type = ev_link_get_link_type (link);
1293 case EV_LINK_TYPE_TITLE:
1295 case EV_LINK_TYPE_PAGE:
1296 page = ev_link_get_page (link);
1297 set_document_page (view, page);
1299 case EV_LINK_TYPE_EXTERNAL_URI:
1300 uri = ev_link_get_uri (link);
1301 gnome_vfs_url_show (uri);
1307 ev_view_go_to_link (EvView *view, EvLink *link)
1309 go_to_link (view, link);
1313 ev_view_set_page (EvView *view,
1316 g_return_if_fail (EV_IS_VIEW (view));
1318 set_document_page (view, page);
1322 ev_view_get_page (EvView *view)
1325 return ev_document_get_page (view->document);
1331 ev_view_zoom (EvView *view,
1338 scale = view->scale * factor;
1342 scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
1344 if (ABS (scale - view->scale) < ZOOM_EPSILON)
1347 view->scale = scale;
1349 ev_document_set_scale (view->document, view->scale);
1351 gtk_widget_queue_resize (GTK_WIDGET (view));
1355 ev_view_zoom_in (EvView *view)
1357 ev_view_zoom (view, ZOOM_IN_FACTOR, TRUE);
1361 ev_view_zoom_out (EvView *view)
1363 ev_view_zoom (view, ZOOM_OUT_FACTOR, TRUE);
1367 ev_view_normal_size (EvView *view)
1369 ev_view_zoom (view, 1.0, FALSE);
1372 /* Unfortunately this is not idempotent (!) (numerical stability
1373 * issues because width and height are rounded) */
1375 ev_view_best_fit (EvView *view, int allocation_width, int allocation_height)
1377 int target_width, target_height;
1381 if (!GTK_WIDGET_REALIZED (view) || view->document == NULL)
1385 /* This is the bad part. You could make it stable by doing
1386 * ev_document_set_scale 1.0. But at least with pdf this means
1387 * redrawing the whole page */
1388 ev_document_get_page_size (view->document, -1, &width, &height);
1389 /* FIXME: The border size isn't constant. Ugh. Still, if we have extra
1390 * space, we just cut it from the border */
1391 ev_document_misc_get_page_border_size (width, height, &border);
1393 target_width = allocation_width - (view->spacing * 2 + border.left + border.right);
1394 target_height = allocation_height - (view->spacing * 2 + border.top + border.bottom);
1396 LOG ("Best fit %d %d", allocation_width, allocation_height);
1398 if (width != 0 && height != 0) {
1400 double scale_w, scale_h;
1402 scale_w = (double)target_width * view->scale / width;
1403 scale_h = (double)target_height * view->scale / height;
1405 scale = (scale_w < scale_h) ? scale_w : scale_h;
1407 ev_view_zoom (view, scale, FALSE);
1413 ev_view_fit_width (EvView *view, int allocation_width, int allocation_height,
1416 int target_width, target_height;
1420 if (view->document == NULL)
1424 ev_document_get_page_size (view->document, -1, &width, &height);
1425 ev_document_misc_get_page_border_size (width, height, &border);
1427 target_width = allocation_width - (view->spacing * 2 + border.left + border.right);
1428 target_height = allocation_height - (view->spacing * 2 + border.top + border.bottom);
1432 scale = (double)target_width * view->scale / width;
1434 if (height * scale / view->scale > target_height)
1435 scale = ((double)(target_width - vsb_width) * view->scale / width);
1437 ev_view_zoom (view, scale, FALSE);
1442 ev_view_get_status (EvView *view)
1444 g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1446 return view->status;
1450 ev_view_get_find_status (EvView *view)
1452 g_return_val_if_fail (EV_IS_VIEW (view), NULL);
1454 return view->find_status;
1458 ev_view_find_next (EvView *view)
1460 int n_results, n_pages;
1461 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1463 n_results = ev_document_find_get_n_results (find);
1464 n_pages = ev_document_get_n_pages (view->document);
1466 view->find_result++;
1468 if (view->find_result >= n_results) {
1469 view->find_result = 0;
1472 if (view->find_page > n_pages) {
1473 view->find_page = 1;
1476 jump_to_find_page (view);
1478 jump_to_find_result (view);
1479 gtk_widget_queue_draw (GTK_WIDGET (view));
1484 ev_view_find_previous (EvView *view)
1486 int n_results, n_pages;
1487 EvDocumentFind *find = EV_DOCUMENT_FIND (view->document);
1489 n_results = ev_document_find_get_n_results (find);
1490 n_pages = ev_document_get_n_pages (view->document);
1492 view->find_result--;
1494 if (view->find_result < 0) {
1495 view->find_result = 0;
1498 if (view->find_page < 1) {
1499 view->find_page = n_pages;
1502 jump_to_find_page (view);
1504 jump_to_find_result (view);
1505 gtk_widget_queue_draw (GTK_WIDGET (view));
1509 ev_view_hide_cursor (EvView *view)
1511 ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
1515 ev_view_show_cursor (EvView *view)
1517 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);