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>
23 #include "ev-marshal.h"
26 #define EV_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
27 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
28 #define EV_VIEW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
31 GtkWidget parent_instance;
35 GdkWindow *bin_window;
40 GtkAdjustment *hadjustment;
41 GtkAdjustment *vadjustment;
47 GtkWidgetClass parent_class;
49 void (*set_scroll_adjustments) (EvView *view,
50 GtkAdjustment *hadjustment,
51 GtkAdjustment *vadjustment);
53 /* Should this be notify::page? */
54 void (*page_changed) (EvView *view);
57 static guint page_changed_signal = 0;
59 static void ev_view_set_scroll_adjustments (EvView *view,
60 GtkAdjustment *hadjustment,
61 GtkAdjustment *vadjustment);
63 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
65 /*** Helper functions ***/
68 view_update_adjustments (EvView *view)
70 int old_x = view->scroll_x;
71 int old_y = view->scroll_y;
73 if (view->hadjustment)
74 view->scroll_x = view->hadjustment->value;
78 if (view->vadjustment)
79 view->scroll_y = view->vadjustment->value;
83 if (GTK_WIDGET_REALIZED (view) &&
84 (view->scroll_x != old_x || view->scroll_y != old_y)) {
85 gdk_window_move (view->bin_window, - view->scroll_x, - view->scroll_y);
86 gdk_window_process_updates (view->bin_window, TRUE);
91 view_set_adjustment_values (EvView *view,
92 GtkOrientation orientation)
94 GtkWidget *widget = GTK_WIDGET (view);
95 GtkAdjustment *adjustment;
96 gboolean value_changed = FALSE;
100 if (orientation == GTK_ORIENTATION_HORIZONTAL) {
101 requisition = widget->requisition.width;
102 allocation = widget->allocation.width;
103 adjustment = view->hadjustment;
105 requisition = widget->requisition.height;
106 allocation = widget->allocation.height;
107 adjustment = view->vadjustment;
113 adjustment->page_size = allocation;
114 adjustment->step_increment = allocation * 0.1;
115 adjustment->page_increment = allocation * 0.9;
116 adjustment->lower = 0;
117 adjustment->upper = MAX (allocation, requisition);
119 if (adjustment->value > adjustment->upper - adjustment->page_size) {
120 adjustment->value = adjustment->upper - adjustment->page_size;
121 value_changed = TRUE;
124 gtk_adjustment_changed (adjustment);
126 gtk_adjustment_value_changed (adjustment);
129 /*** Virtual function implementations ***/
132 ev_view_finalize (GObject *object)
134 EvView *view = EV_VIEW (object);
137 g_object_unref (view->document);
139 ev_view_set_scroll_adjustments (view, NULL, NULL);
141 g_array_free (view->find_results, TRUE);
142 view->find_results = NULL;
144 G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
148 ev_view_destroy (GtkObject *object)
150 EvView *view = EV_VIEW (object);
152 ev_view_set_scroll_adjustments (view, NULL, NULL);
154 GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
158 ev_view_size_request (GtkWidget *widget,
159 GtkRequisition *requisition)
161 EvView *view = EV_VIEW (widget);
163 if (GTK_WIDGET_REALIZED (widget)) {
164 if (view->document) {
165 ev_document_get_page_size (view->document,
167 &requisition->height);
169 requisition->width = 10;
170 requisition->height = 10;
177 ev_view_size_allocate (GtkWidget *widget,
178 GtkAllocation *allocation)
180 EvView *view = EV_VIEW (widget);
182 GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
184 view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
185 view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
187 if (GTK_WIDGET_REALIZED (widget)) {
188 gdk_window_resize (view->bin_window,
189 MAX (widget->allocation.width, widget->requisition.width),
190 MAX (widget->allocation.height, widget->requisition.height));
195 update_window_backgrounds (EvView *view)
197 GtkWidget *widget = GTK_WIDGET (view);
199 if (GTK_WIDGET_REALIZED (view)) {
200 gdk_window_set_background (view->bin_window,
201 &widget->style->base[GTK_WIDGET_STATE (widget)]);
206 ev_view_realize (GtkWidget *widget)
208 EvView *view = EV_VIEW (widget);
209 GdkWindowAttr attributes;
211 GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
213 attributes.window_type = GDK_WINDOW_CHILD;
214 attributes.wclass = GDK_INPUT_OUTPUT;
215 attributes.visual = gtk_widget_get_visual (widget);
216 attributes.colormap = gtk_widget_get_colormap (widget);
218 attributes.x = widget->allocation.x;
219 attributes.y = widget->allocation.y;
220 attributes.width = widget->allocation.width;
221 attributes.height = widget->allocation.height;
222 attributes.event_mask = 0;
224 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
226 GDK_WA_X | GDK_WA_Y |
229 gdk_window_set_user_data (widget->window, widget);
230 widget->style = gtk_style_attach (widget->style, widget->window);
234 attributes.width = MAX (widget->allocation.width, widget->requisition.width);
235 attributes.height = MAX (widget->allocation.height, widget->requisition.height);
236 attributes.event_mask = GDK_EXPOSURE_MASK;
238 view->bin_window = gdk_window_new (widget->window,
240 GDK_WA_X | GDK_WA_Y |
243 gdk_window_set_user_data (view->bin_window, widget);
244 gdk_window_show (view->bin_window);
246 if (view->document) {
247 ev_document_set_target (view->document, view->bin_window);
249 /* We can't get page size without a target, so we have to
250 * queue a size request at realization. Could be fixed
251 * with EvDocument changes to allow setting a GdkScreen
252 * without setting a target.
254 gtk_widget_queue_resize (widget);
257 update_window_backgrounds (view);
261 ev_view_unrealize (GtkWidget *widget)
263 EvView *view = EV_VIEW (widget);
266 ev_document_set_target (view->document, NULL);
268 gdk_window_set_user_data (view->bin_window, NULL);
269 gdk_window_destroy (view->bin_window);
270 view->bin_window = NULL;
272 GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget);
276 ev_view_style_set (GtkWidget *widget,
277 GtkStyle *previous_style)
279 update_window_backgrounds (EV_VIEW (widget));
283 ev_view_state_changed (GtkWidget *widget,
284 GtkStateType previous_state)
286 update_window_backgrounds (EV_VIEW (widget));
290 expose_bin_window (GtkWidget *widget,
291 GdkEventExpose *event)
293 EvView *view = EV_VIEW (widget);
295 const EvFindResult *results;
298 ev_document_render (view->document,
299 event->area.x, event->area.y,
300 event->area.width, event->area.height);
302 results = (EvFindResult*) view->find_results->data;
304 while (i < view->find_results->len) {
306 g_printerr ("highlighting result %d at %d,%d %dx%d\n",
308 results[i].highlight_area.x,
309 results[i].highlight_area.y,
310 results[i].highlight_area.width,
311 results[i].highlight_area.height);
313 // if (results[i].page_num == current_page) FIXME
314 gdk_draw_rectangle (view->bin_window,
315 widget->style->base_gc[GTK_STATE_SELECTED],
317 results[i].highlight_area.x,
318 results[i].highlight_area.y,
319 results[i].highlight_area.width,
320 results[i].highlight_area.height);
326 ev_view_expose_event (GtkWidget *widget,
327 GdkEventExpose *event)
329 EvView *view = EV_VIEW (widget);
331 if (event->window == view->bin_window)
332 expose_bin_window (widget, event);
334 return GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event (widget, event);
340 ev_view_button_press_event (GtkWidget *widget,
341 GdkEventButton *event)
343 /* EvView *view = EV_VIEW (widget); */
349 ev_view_motion_notify_event (GtkWidget *widget,
350 GdkEventMotion *event)
352 /* EvView *view = EV_VIEW (widget); */
358 ev_view_button_release_event (GtkWidget *widget,
359 GdkEventButton *event)
361 /* EvView *view = EV_VIEW (widget); */
367 on_adjustment_value_changed (GtkAdjustment *adjustment,
370 view_update_adjustments (view);
374 set_scroll_adjustment (EvView *view,
375 GtkOrientation orientation,
376 GtkAdjustment *adjustment)
378 GtkAdjustment **to_set;
380 if (orientation == GTK_ORIENTATION_HORIZONTAL)
381 to_set = &view->hadjustment;
383 to_set = &view->vadjustment;
385 if (*to_set != adjustment) {
387 g_signal_handlers_disconnect_by_func (*to_set,
388 (gpointer) on_adjustment_value_changed,
390 g_object_unref (*to_set);
393 *to_set = adjustment;
394 view_set_adjustment_values (view, orientation);
397 g_object_ref (*to_set);
398 g_signal_connect (*to_set, "value_changed",
399 G_CALLBACK (on_adjustment_value_changed), view);
405 ev_view_set_scroll_adjustments (EvView *view,
406 GtkAdjustment *hadjustment,
407 GtkAdjustment *vadjustment)
409 set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
410 set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
412 view_update_adjustments (view);
416 ev_view_class_init (EvViewClass *class)
418 GObjectClass *object_class = G_OBJECT_CLASS (class);
419 GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
420 GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
422 object_class->finalize = ev_view_finalize;
424 widget_class->expose_event = ev_view_expose_event;
425 widget_class->button_press_event = ev_view_button_press_event;
426 widget_class->motion_notify_event = ev_view_motion_notify_event;
427 widget_class->button_release_event = ev_view_button_release_event;
428 widget_class->size_request = ev_view_size_request;
429 widget_class->size_allocate = ev_view_size_allocate;
430 widget_class->realize = ev_view_realize;
431 widget_class->unrealize = ev_view_unrealize;
432 widget_class->style_set = ev_view_style_set;
433 widget_class->state_changed = ev_view_state_changed;
434 gtk_object_class->destroy = ev_view_destroy;
436 class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
438 widget_class->set_scroll_adjustments_signal = g_signal_new ("set-scroll-adjustments",
439 G_OBJECT_CLASS_TYPE (object_class),
440 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
441 G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments),
443 ev_marshal_VOID__OBJECT_OBJECT,
446 GTK_TYPE_ADJUSTMENT);
447 page_changed_signal = g_signal_new ("page-changed",
448 G_OBJECT_CLASS_TYPE (object_class),
449 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
450 G_STRUCT_OFFSET (EvViewClass, page_changed),
452 ev_marshal_VOID__NONE,
457 ev_view_init (EvView *view)
459 static const GdkColor white = { 0, 0xffff, 0xffff, 0xffff };
461 gtk_widget_modify_bg (GTK_WIDGET (view), GTK_STATE_NORMAL, &white);
463 view->find_results = g_array_new (FALSE,
465 sizeof (EvFindResult));
470 found_results_callback (EvDocument *document,
471 const EvFindResult *results,
473 double percent_complete,
476 EvView *view = EV_VIEW (data);
478 g_array_set_size (view->find_results, 0);
481 g_array_append_vals (view->find_results,
484 gtk_widget_queue_draw (GTK_WIDGET (view));
492 return g_object_new (EV_TYPE_VIEW, NULL);
496 ev_view_set_document (EvView *view,
497 EvDocument *document)
499 g_return_if_fail (EV_IS_VIEW (view));
501 if (document != view->document) {
502 int old_page = ev_view_get_page (view);
504 if (view->document) {
505 g_object_unref (view->document);
506 g_signal_handlers_disconnect_by_func (view->document,
507 found_results_callback,
509 g_array_set_size (view->find_results, 0);
512 view->document = document;
514 if (view->document) {
515 g_object_ref (view->document);
516 g_signal_connect (view->document,
518 G_CALLBACK (found_results_callback),
522 if (GTK_WIDGET_REALIZED (view))
523 ev_document_set_target (view->document, view->bin_window);
525 gtk_widget_queue_resize (GTK_WIDGET (view));
527 if (old_page != ev_view_get_page (view))
528 g_signal_emit (view, page_changed_signal, 0);
533 ev_view_set_page (EvView *view,
536 if (view->document) {
537 int old_page = ev_document_get_page (view->document);
538 if (old_page != page)
539 ev_document_set_page (view->document, page);
540 if (old_page != ev_document_get_page (view->document)) {
541 g_signal_emit (view, page_changed_signal, 0);
542 gtk_widget_queue_draw (GTK_WIDGET (view));
548 ev_view_get_page (EvView *view)
551 return ev_document_get_page (view->document);