From c32c6f5ad024cf4ca396b867d82693501e341659 Mon Sep 17 00:00:00 2001
From: Jon Bergli Heier <snakebite@jvnv.net>
Date: Tue, 9 Mar 2010 19:14:19 +0100
Subject: Implemented zoom buttons.

---
 wallpapers.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'wallpapers.c')

diff --git a/wallpapers.c b/wallpapers.c
index a4bfb60..0d37f5e 100644
--- a/wallpapers.c
+++ b/wallpapers.c
@@ -223,3 +223,18 @@ GdkPixbuf *resize_pixbuf(GdkPixbuf *orig, gint win_width, gint win_height, gint
 
 	return pb;
 }
+
+GdkPixbuf *zoom_pixbuf(GdkPixbuf *orig, gdouble zoom) {
+	GdkPixbuf *pb;
+	gint img_width, img_height, width, height;
+
+	img_width = gdk_pixbuf_get_width(orig);
+	img_height = gdk_pixbuf_get_height(orig);
+
+	width = img_width * zoom;
+	height = img_height * zoom;
+	pb = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
+	gdk_pixbuf_scale(orig, pb, 0, 0, width, height, 0, 0,
+			(gdouble)width / (gdouble)img_width, (gdouble)height / (gdouble)img_height, GDK_INTERP_BILINEAR);
+	return pb;
+}
-- 
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