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Ensure that cached surface sizes are 1x1

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We cannot create similar surfaces that are smaller than 1x1 on X11, so
we should always ensure that we clamp the surface size to 1x1 when
calling gdk_window_create_similar_surface().

Fixes: #2226
This commit is contained in:
Emmanuele Bassi
2019-11-16 18:51:29 +00:00
parent e5550439e2
commit 8d0138bd6b
1 changed files with 6 additions and 5 deletions
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11
gtk/gtkpixelcache.c
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@ -229,17 +229,18 @@ _gtk_pixel_cache_create_surface_if_needed (GtkPixelCache *cache,
{
cache->surface_x = -canvas_rect->x;
cache->surface_y = -canvas_rect->y;
cache->surface_w = surface_w;
cache->surface_h = surface_h;
cache->surface_w = MAX (surface_w, 1);
cache->surface_h = MAX (surface_h, 1);
cache->surface_scale = gdk_window_get_scale_factor (window);
cache->surface =
gdk_window_create_similar_surface (window, content,
surface_w, surface_h);
cache->surface_w,
cache->surface_h);
rect.x = 0;
rect.y = 0;
rect.width = surface_w;
rect.height = surface_h;
rect.width = cache->surface_w;
rect.height = cache->surface_h;
cache->surface_dirty =
cairo_region_create_rectangle (&rect);
}