From 289f88cac3057908e54bf1540743c7926d07bdb8 Mon Sep 17 00:00:00 2001
From: Stefano Karapetsas <stefano@karapetsas.com>
Date: Tue, 12 Nov 2013 16:55:17 +0100
Subject: savers: Add GTK3 support

---
 savers/gste-slideshow.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)

diff --git a/savers/gste-slideshow.c b/savers/gste-slideshow.c
index 42c2267..61d6a19 100644
--- a/savers/gste-slideshow.c
+++ b/savers/gste-slideshow.c
@@ -174,7 +174,9 @@ start_fade (GSTESlideshow *show,
 	{
 		GdkPixbuf *colored;
 		guint32    color;
+#if !GTK_CHECK_VERSION (3, 0, 0)
 		GdkPixmap *pixmap;
+#endif
 
 		color = (show->priv->background_color->red << 16)
 		        + (show->priv->background_color->green / 256 << 8)
@@ -186,12 +188,19 @@ start_fade (GSTESlideshow *show,
 		          256,
 		          color,
 		          color);
+#if GTK_CHECK_VERSION (3, 0, 0)
+		gdk_pixbuf_copy_area (colored, 0, 0,
+		                      gdk_pixbuf_get_width (colored),
+		                      gdk_pixbuf_get_height (colored),
+		                      pixbuf, 0, 0);
+#else
 		pixmap = gdk_pixmap_new (NULL, ph, pw,  gdk_visual_get_system ()->depth);
 
 		gdk_draw_pixbuf (pixmap, NULL, colored, 0, 0, 0, 0, -1, -1, GDK_RGB_DITHER_MAX, 0, 0);
 		gdk_pixbuf_get_from_drawable (pixbuf, pixmap, NULL, 0, 0, 0, 0, -1, -1);
 
 		g_object_unref (pixmap);
+#endif
 
 		g_object_unref(colored);
 	}
@@ -326,6 +335,9 @@ update_display (GSTESlideshow *show)
 
 	cairo_destroy (cr);
 
+#if GTK_CHECK_VERSION (3, 0, 0)
+	gtk_widget_queue_draw (GTK_WIDGET (show));
+#else
 	/* paint the image buffer into the window */
 	cr = gdk_cairo_create (GTK_WIDGET (show)->window);
 
@@ -338,6 +350,7 @@ update_display (GSTESlideshow *show)
 	cairo_destroy (cr);
 
 	gs_theme_engine_profile_end ("end");
+#endif
 }
 
 static gboolean
@@ -879,20 +892,41 @@ gste_slideshow_real_show (GtkWidget *widget)
 }
 
 static gboolean
+#if GTK_CHECK_VERSION (3, 0, 0)
+gste_slideshow_real_draw (GtkWidget *widget,
+                          cairo_t   *cr)
+#else
 gste_slideshow_real_expose (GtkWidget      *widget,
                             GdkEventExpose *event)
+#endif
 {
 	GSTESlideshow *show = GSTE_SLIDESHOW (widget);
+#if !GTK_CHECK_VERSION (3, 0, 0)
 	gboolean       handled = FALSE;
 
 	update_display (show);
+#endif
 
+#if GTK_CHECK_VERSION (3, 0, 0)
+	if (GTK_WIDGET_CLASS (parent_class)->draw)
+	{
+		GTK_WIDGET_CLASS (parent_class)->draw (widget, cr);
+	}
+	cairo_set_source_surface (cr, show->priv->surf, 0, 0);
+
+	gs_theme_engine_profile_start ("paint surface to window");
+	cairo_paint (cr);
+	gs_theme_engine_profile_end ("paint surface to window");
+
+	return TRUE;
+#else
 	if (GTK_WIDGET_CLASS (parent_class)->expose_event)
 	{
 		handled = GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
 	}
 
 	return handled;
+#endif
 }
 
 static gboolean
@@ -917,7 +951,11 @@ gste_slideshow_real_configure (GtkWidget         *widget,
 		cairo_surface_destroy (show->priv->surf);
 	}
 
+#if GTK_CHECK_VERSION (3, 0, 0)
+	cr = gdk_cairo_create (gtk_widget_get_window (widget));
+#else
 	cr = gdk_cairo_create (widget->window);
+#endif
 	show->priv->surf = cairo_surface_create_similar (cairo_get_target (cr),
 	                   CAIRO_CONTENT_COLOR,
 	                   show->priv->window_width,
@@ -948,7 +986,11 @@ gste_slideshow_class_init (GSTESlideshowClass *klass)
 	object_class->set_property = gste_slideshow_set_property;
 
 	widget_class->show = gste_slideshow_real_show;
+#if GTK_CHECK_VERSION (3, 0, 0)
+	widget_class->draw = gste_slideshow_real_draw;
+#else
 	widget_class->expose_event = gste_slideshow_real_expose;
+#endif
 	widget_class->configure_event = gste_slideshow_real_configure;
 
 	g_type_class_add_private (klass, sizeof (GSTESlideshowPrivate));
@@ -983,6 +1025,23 @@ gste_slideshow_class_init (GSTESlideshowClass *klass)
 	                                         G_PARAM_READWRITE));
 }
 
+#if GTK_CHECK_VERSION (3, 0, 0)
+static void
+set_visual (GtkWidget *widget)
+{
+	GdkScreen *screen;
+	GdkVisual *visual;
+
+	screen = gtk_widget_get_screen (widget);
+	visual = gdk_screen_get_rgba_visual (screen);
+	if (visual == NULL)
+	{
+		visual = gdk_screen_get_system_visual (screen);
+	}
+
+	gtk_widget_set_visual (widget, visual);
+}
+#else
 static void
 set_colormap (GtkWidget *widget)
 {
@@ -998,6 +1057,7 @@ set_colormap (GtkWidget *widget)
 
 	gtk_widget_set_colormap (widget, colormap);
 }
+#endif
 
 static void
 gste_slideshow_init (GSTESlideshow *show)
@@ -1021,7 +1081,11 @@ gste_slideshow_init (GSTESlideshow *show)
 		exit (-1);
 	}
 
+#if GTK_CHECK_VERSION (3, 0, 0)
+	set_visual (GTK_WIDGET (show));
+#else
 	set_colormap (GTK_WIDGET (show));
+#endif
 }
 
 static void
-- 
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