desktop-shell: Scale background image to output size
diff --git a/clients/desktop-shell.c b/clients/desktop-shell.c
index 4ed1c35..3f773e9 100644
--- a/clients/desktop-shell.c
+++ b/clients/desktop-shell.c
@@ -284,7 +284,10 @@
background_draw(struct window *window, int width, int height, const char *path)
{
cairo_surface_t *surface, *image;
+ cairo_pattern_t *pattern;
+ cairo_matrix_t matrix;
cairo_t *cr;
+ double sx, sy;
window_set_child_size(window, width, height);
window_draw(window);
@@ -297,7 +300,13 @@
if (path) {
image = cairo_image_surface_create_from_png(path);
- cairo_set_source_surface(cr, image, 0, 0);
+ pattern = cairo_pattern_create_for_surface(image);
+ sx = (double) cairo_image_surface_get_width(image) / width;
+ sy = (double) cairo_image_surface_get_height(image) / height;
+ cairo_matrix_init_scale(&matrix, sx, sy);
+ cairo_pattern_set_matrix(pattern, &matrix);
+ cairo_set_source(cr, pattern);
+ cairo_pattern_destroy (pattern);
cairo_paint(cr);
}