From f7c3085a0e3c5c813cf9ae40b55fd7390e9373e2 Mon Sep 17 00:00:00 2001
From: Carlos Garcia Campos <carlosgc@gnome.org>
Date: Wed, 27 Dec 2006 17:33:22 +0000
Subject: Add page transition support in presentation mode. At the moment only page

2006-12-27  Carlos Garcia Campos  <carlosgc@gnome.org>
	* configure.ac:
	* backend/Makefile.am:
	* backend/ev-document-transition.[ch]:
	* pdf/ev-poppler.cc: (pdf_document_get_page_duration),
	(pdf_document_page_transition_iface_init):
	* shell/ev-view-private.h:
	* shell/ev-view.c: (ev_view_destroy), (page_changed_cb),
	(ev_view_set_presentation), (transition_next_page),
	(ev_view_presentation_transition_stop),
	(ev_view_presentation_transition_start), (ev_view_next_page):
	Add page transition support in presentation mode. At the moment only
	page duration is supported, but not transition effects. Fixes bug
	#309815.
---
(limited to 'shell')

diff --git a/shell/ev-view-private.h b/shell/ev-view-private.h
index d03a936..f1f5ad5 100644
--- a/shell/ev-view-private.h
+++ b/shell/ev-view-private.h
@@ -111,6 +111,7 @@ struct _EvView {
 	EvPresentationState presentation_state;
 	EvSizingMode sizing_mode_saved;
 	double scale_saved;
+	guint  trans_timeout_id;
 
 	/* Common for button press handling */
 	int pressed_button;
diff --git a/shell/ev-view.c b/shell/ev-view.c
index ad7ef61..a7bae3d 100644
--- a/shell/ev-view.c
+++ b/shell/ev-view.c
@@ -36,6 +36,7 @@
 #include "ev-selection.h"
 #include "ev-document-links.h"
 #include "ev-document-find.h"
+#include "ev-document-transition.h"
 #include "ev-document-misc.h"
 #include "ev-debug.h"
 #include "ev-job-queue.h"
@@ -312,6 +313,10 @@ static void       ev_view_primary_clear_cb                   (GtkClipboard
 							      gpointer            data);
 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 
+/*** Presentation ***/
+static void       ev_view_presentation_transition_start      (EvView             *ev_view);
+static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
+
 
 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET)
 
@@ -2814,6 +2819,8 @@ ev_view_destroy (GtkObject *object)
 	    view->selection_update_id = 0;
 	}
 
+	ev_view_presentation_transition_stop (view);
+
 	ev_view_set_scroll_adjustments (view, NULL, NULL);
 
 	GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
@@ -3163,6 +3170,8 @@ page_changed_cb (EvPageCache *page_cache,
 	if (view->current_page != new_page) {
 		view->current_page = new_page;
 		view->pending_scroll = SCROLL_TO_PAGE_POSITION;
+		if (view->presentation)
+			ev_view_presentation_transition_start (view);
 		gtk_widget_queue_resize (GTK_WIDGET (view));
 	} else {
 		gtk_widget_queue_draw (GTK_WIDGET (view));
@@ -3427,6 +3436,11 @@ ev_view_set_presentation (EvView   *view,
 	
 	gtk_widget_queue_resize (GTK_WIDGET (view));
 
+	if (presentation)
+		ev_view_presentation_transition_start (view);
+	else
+		ev_view_presentation_transition_stop (view);
+
 	if (GTK_WIDGET_REALIZED (view)) {
 		if (view->presentation)
 			gdk_window_set_background (GTK_WIDGET(view)->window,
@@ -3447,6 +3461,40 @@ ev_view_get_presentation (EvView *view)
 	return view->presentation;
 }
 
+static gboolean
+transition_next_page (EvView *view)
+{
+	ev_view_next_page (view);
+
+	return FALSE;
+}
+
+static void
+ev_view_presentation_transition_stop (EvView *view)
+{
+	if (view->trans_timeout_id > 0)
+		g_source_remove (view->trans_timeout_id);
+	view->trans_timeout_id = 0;
+}
+
+static void
+ev_view_presentation_transition_start (EvView *view)
+{
+	gdouble duration;
+	
+	if (!EV_IS_DOCUMENT_TRANSITION (view->document))
+		return;
+
+	ev_view_presentation_transition_stop (view);
+
+	duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
+							     view->current_page);
+	if (duration > 0)
+		view->trans_timeout_id = g_timeout_add (duration * 1000,
+							(GSourceFunc) transition_next_page,
+							view);
+}
+
 void
 ev_view_set_sizing_mode (EvView       *view,
 			 EvSizingMode  sizing_mode)
@@ -4556,6 +4604,7 @@ ev_view_next_page (EvView *view)
 	if (!view->page_cache)
 		return FALSE;
 
+	ev_view_presentation_transition_stop (view);
 	ev_view_reset_presentation_state (view);
 	
 	page = ev_page_cache_get_current_page (view->page_cache);
--
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