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css: Inherit device scale in _gtk_css_image_get_surface

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To handle hidpi support we need to make sure we don't
downscale scaled css images.

Note: If cairo_surface_create_similar starts doing this
by itself we need to back this out.
This commit is contained in:
Alexander Larsson 2013-08-05 16:11:18 +02:00
parent 8c7a8e9314
commit 499cef1bb0
1 changed files with 18 additions and 4 deletions
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22
gtk/gtkcssimage.c
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@ -389,16 +389,30 @@ _gtk_css_image_get_surface (GtkCssImage *image,
{ {
cairo_surface_t *result; cairo_surface_t *result;
cairo_t *cr; cairo_t *cr;
double sx, sy;
g_return_val_if_fail (GTK_IS_CSS_IMAGE (image), NULL); g_return_val_if_fail (GTK_IS_CSS_IMAGE (image), NULL);
g_return_val_if_fail (surface_width > 0, NULL); g_return_val_if_fail (surface_width > 0, NULL);
g_return_val_if_fail (surface_height > 0, NULL); g_return_val_if_fail (surface_height > 0, NULL);
if (target) if (target)
result = cairo_surface_create_similar (target, {
CAIRO_CONTENT_COLOR_ALPHA, #ifdef HAVE_CAIRO_SURFACE_SET_DEVICE_SCALE
surface_width, cairo_surface_get_device_scale (target, &sx, &sy);
surface_height); #else
sx = sy = 1;
#endif
result = cairo_surface_create_similar (target,
CAIRO_CONTENT_COLOR_ALPHA,
surface_width*sx,
surface_height*sy);
#ifdef HAVE_CAIRO_SURFACE_SET_DEVICE_SCALE
cairo_surface_set_device_scale (result, sx, sy);
#endif
}
else else
result = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, result = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
surface_width, surface_width,