| // Copyright 2018 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "components/viz/common/display/use_layered_window.h" |
| |
| #include "ui/base/win/internal_constants.h" |
| |
| namespace viz { |
| |
| bool NeedsToUseLayerWindow(HWND hwnd) { |
| // TODO(kylechar): Revisit if we can not use layered windows on Windows 8 and |
| // higher. With DWM enabled HWNDs seem to support an alpha channel natively. |
| // However, when touch highlight or pointer trails are enabled Windows ends up |
| // blending the highlight/trail with old content for non-layered HWNDs. See |
| // https://crbug.com/843974 for more details. |
| return GetProp(hwnd, ui::kWindowTranslucent); |
| } |
| |
| } // namespace viz |
