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shadows: Respect scaled factors for cached surface

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This commit is contained in:
Benjamin Otte
2014-10-10 01:02:34 +02:00
parent 39097ea2da
commit 3f4bd447f8
1 changed files with 9 additions and 3 deletions
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12
gtk/gtkcssshadowvalue.c
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@ -423,22 +423,28 @@ make_blurred_pango_surface (cairo_t *existing_cr,
cairo_surface_t *surface;
cairo_t *cr;
gdouble radius, clip_radius;
gdouble x_scale, y_scale;
PangoRectangle ink_rect;
radius = _gtk_css_number_value_get (shadow->radius, 0);
pango_layout_get_pixel_extents (layout, &ink_rect, NULL);
clip_radius = _gtk_cairo_blur_compute_pixels (radius);
x_scale = y_scale = 1;
#ifdef HAVE_CAIRO_SURFACE_SET_DEVICE_SCALE
cairo_surface_get_device_scale (cairo_get_target (existing_cr), &x_scale, &y_scale);
#endif
surface = cairo_surface_create_similar_image (cairo_get_target (existing_cr),
CAIRO_FORMAT_A8,
ink_rect.width + 2 * clip_radius,
ink_rect.height + 2 * clip_radius);
x_scale * (ink_rect.width + 2 * clip_radius),
y_scale * (ink_rect.height + 2 * clip_radius));
cairo_surface_set_device_scale (surface, x_scale, y_scale);
cairo_surface_set_device_offset (surface, -ink_rect.x + clip_radius, -ink_rect.y + clip_radius);
cr = cairo_create (surface);
cairo_move_to (cr, 0, 0);
_gtk_pango_fill_layout (cr, layout);
_gtk_cairo_blur_surface (surface, radius);
_gtk_cairo_blur_surface (surface, radius * x_scale);
cairo_destroy (cr);