Commit e36b629c authored by Juan Pablo Ugarte's avatar Juan Pablo Ugarte

GtkCssImageSurface: set device scale for cache surface

Closes #63
parent fa47667d
......@@ -60,8 +60,14 @@ gtk_css_image_surface_draw (GtkCssImage *image,
ABS (width - surface->width) > 0.001 ||
ABS (height - surface->height) > 0.001)
double xscale, yscale;
cairo_t *cache;
/* We need the device scale (HiDPI mode) to calculate the proper size in
* pixels for the image surface and set the cache device scale
cairo_surface_get_device_scale (cairo_get_target (cr), &xscale, &yscale);
/* Save original size to preserve precision */
surface->width = width;
surface->height = height;
......@@ -72,8 +78,9 @@ gtk_css_image_surface_draw (GtkCssImage *image,
/* Image big enough to contain scaled image with subpixel precision */
surface->cache = cairo_surface_create_similar_image (surface->surface,
ceil (width),
ceil (height));
ceil (width*xscale),
ceil (height*yscale));
cairo_surface_set_device_scale (surface->cache, xscale, yscale);
cache = cairo_create (surface->cache);
cairo_rectangle (cache, 0, 0, width, height);
cairo_scale (cache, width / image_width, height / image_height);
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