From 7b53a73b0fb4d98a08a340df3f7e5cff95b4c0c5 Mon Sep 17 00:00:00 2001
From: Uli Schlachter <psychon@znc.in>
Date: Fri, 20 Aug 2010 12:02:31 +0200
Subject: [PATCH] Add a function for drawing a cairo surface

Signed-off-by: Uli Schlachter <psychon@znc.in>
---
 draw.c | 19 +++++++++++++++++++
 draw.h |  1 +
 2 files changed, 20 insertions(+)

diff --git a/draw.c b/draw.c
index 565aeafcb..46a268c49 100644
--- a/draw.c
+++ b/draw.c
@@ -283,6 +283,25 @@ draw_image(draw_context_t *ctx, int x, int y, double ratio, image_t *image)
     draw_image_from_argb_data(ctx, x, y, image_getwidth(image), image_getheight(image), ratio, image_getdata(image));
 }
 
+/** Draw an image to a draw context.
+ * \param ctx Draw context to draw to.
+ * \param x X coordinate.
+ * \param y Y coordinate.
+ * \param ratio The ratio to apply to the image.
+ * \param source The image to draw.
+ */
+void
+draw_surface(draw_context_t *ctx, int x, int y,
+             double ratio, cairo_surface_t *source)
+{
+    cairo_t *cr = cairo_create(ctx->surface);
+    cairo_scale(cr, ratio, ratio);
+    cairo_set_source_surface(cr, source, x / ratio, y / ratio);
+    cairo_paint(cr);
+
+    cairo_destroy(cr);
+}
+
 /** Rotate a pixmap.
  * \param ctx Draw context to draw with.
  * \param src Drawable to draw from.
diff --git a/draw.h b/draw.h
index 3993f8b67..c90e47024 100644
--- a/draw.h
+++ b/draw.h
@@ -130,6 +130,7 @@ bool draw_text_context_init(draw_text_context_t *, const char *, ssize_t);
 void draw_text(draw_context_t *, draw_text_context_t *, PangoEllipsizeMode, PangoWrapMode, alignment_t, alignment_t, area_t);
 void draw_rectangle(draw_context_t *, area_t, float, bool, const color_t *);
 void draw_image(draw_context_t *, int, int, double, image_t *);
+void draw_surface(draw_context_t *, int, int, double, cairo_surface_t *);
 void draw_rotate(draw_context_t *, xcb_drawable_t, xcb_drawable_t, int, int, int, int, double, int, int);
 area_t draw_text_extents(draw_text_context_t *);
 alignment_t draw_align_fromstr(const char *);