cairo_surface_t*
image_surface = cairo_image_surface_create_from_png("data.png");
cairo_set_source_surface(original_cr, image_surface,
start_x, start_y);
cairo_paint(original_cr);
cairo_surface_destory(image_surface);
cairo_surface_t*
image_surface = cairo_image_surface_create_from_png("data.png");
cairo_set_source_surface(original_cr, image_surface,
start_x, start_y);
cairo_paint(original_cr);
cairo_surface_destory(image_surface);