From ab33ce773663bc75b98f7ca2c90ad30e16130b13 Mon Sep 17 00:00:00 2001
From: Tilman Sauerbeck <tilman@code-monkey.de>
Date: Wed, 8 Aug 2007 13:03:53 +0200
Subject: [PATCH] Switched to poppler's cairo backend.

Also put the rendered output in a scrolled window.
---
 src/rakt-window.c | 62 +++++++++++++++++++++++++++++++++++------------
 1 file changed, 46 insertions(+), 16 deletions(-)

diff --git a/src/rakt-window.c b/src/rakt-window.c
index 13b35d8..9f25fb8 100644
--- a/src/rakt-window.c
+++ b/src/rakt-window.c
@@ -38,9 +38,9 @@ typedef struct {
 	GtkAction *action_prev;
 	GtkAction *action_next;
 
-	GtkWidget *image;
-	GdkPixbuf *pixbuf;
+	GtkWidget *drawing_area;
 	PopplerDocument *document;
+	PopplerPage *page;
 	gint page_no;
 } RaktWindowPriv;
 
@@ -133,7 +133,6 @@ static void
 render_page (RaktWindow *window)
 {
 	RaktWindowPriv *priv;
-	PopplerPage *page;
 	double tmpw, tmph;
 	int width, height, n_pages;
 
@@ -143,20 +142,15 @@ render_page (RaktWindow *window)
 	gtk_action_set_sensitive (priv->action_prev, priv->page_no > 0);
 	gtk_action_set_sensitive (priv->action_next, priv->page_no < n_pages - 1);
 
-	page = poppler_document_get_page (priv->document, priv->page_no);
-
-	poppler_page_get_size (page, &tmpw, &tmph);
+	priv->page = poppler_document_get_page (priv->document, priv->page_no);
 
-	width = (int) tmpw;
-	height = (int) tmph;
+	poppler_page_get_size (priv->page, &tmpw, &tmph);
 
-	priv->pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
-	                               width, height);
+	width = (int) (tmpw + 0.5);
+	height = (int) (tmph + 0.5);
 
-	poppler_page_render_to_pixbuf (page, 0, 0, width, height, 1.0, 0,
-	                               priv->pixbuf);
-	gtk_image_set_from_pixbuf (GTK_IMAGE (priv->image), priv->pixbuf);
-	gtk_widget_show (priv->image);
+	gtk_widget_set_size_request (priv->drawing_area, width, height);
+	gtk_widget_queue_draw_area (priv->drawing_area, 0, 0, width, height);
 }
 
 static void
@@ -216,6 +210,27 @@ window_create_menu (RaktWindow *window)
 	gtk_action_set_sensitive (priv->action_next, false);
 }
 
+static gboolean
+on_expose_event (GtkWidget *widget, GdkEvent *event, gpointer user_data)
+{
+	RaktWindowPriv *priv;
+	cairo_t *cr;
+
+	priv = GET_PRIV (user_data);
+
+	cr = gdk_cairo_create (priv->drawing_area->window);
+
+	cairo_set_source_rgb (cr, 255, 255, 255);
+	cairo_paint (cr);
+
+	if (priv->page)
+		poppler_page_render (priv->page, cr);
+
+	cairo_destroy (cr);
+
+	return FALSE;
+}
+
 static gboolean
 on_delete_event (GtkWidget *widget, GdkEvent *event, gpointer user_data)
 {
@@ -228,6 +243,7 @@ static void
 rakt_window_init (RaktWindow *window)
 {
 	RaktWindowPriv *priv;
+	GtkWidget *scrolled;
 
 	priv = GET_PRIV (window);
 
@@ -240,9 +256,23 @@ rakt_window_init (RaktWindow *window)
 
 	window_create_menu (window);
 
-	priv->image = gtk_image_new ();
+	priv->drawing_area = gtk_drawing_area_new ();
+	gtk_widget_show (priv->drawing_area);
+
+	g_signal_connect (priv->drawing_area, "expose-event",
+	                  G_CALLBACK (on_expose_event), window);
+
+	scrolled = gtk_scrolled_window_new (NULL, NULL);
+
+	gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled),
+	                                GTK_POLICY_AUTOMATIC,
+	                                GTK_POLICY_AUTOMATIC);
+
+	gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (scrolled),
+	                                       priv->drawing_area);
+	gtk_widget_show (scrolled);
 
-	gtk_box_pack_start (GTK_BOX (priv->content_vbox), priv->image,
+	gtk_box_pack_start (GTK_BOX (priv->content_vbox), scrolled,
 	                    TRUE, TRUE, 0);
 
 	g_signal_connect (GTK_WINDOW (window), "delete-event",
-- 
2.30.2