| // Copyright 2017 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. |
| |
| #ifndef UI_AURA_HIT_TEST_DATA_PROVIDER_AURA_H_ |
| #define UI_AURA_HIT_TEST_DATA_PROVIDER_AURA_H_ |
| |
| #include "base/macros.h" |
| #include "components/viz/client/hit_test_data_provider.h" |
| #include "ui/aura/aura_export.h" |
| |
| namespace aura { |
| |
| class Window; |
| |
| // A HitTestDataProvider that captures hit-test areas from a aura::Window tree |
| // and packages it to be submitted to compositor frame sink. The |window| used |
| // when creating the HitTestDataProviderAura should outlive the data provider. |
| class AURA_EXPORT HitTestDataProviderAura : public viz::HitTestDataProvider { |
| public: |
| explicit HitTestDataProviderAura(Window* window); |
| ~HitTestDataProviderAura() override; |
| |
| // HitTestDataProvider: |
| base::Optional<viz::HitTestRegionList> GetHitTestData( |
| const viz::CompositorFrame& compositor_frame) const override; |
| |
| private: |
| // Recursively walks the children of |window| and uses |window|'s |
| // EventTargeter to generate hit-test data for the |window|'s descendants. |
| // Populates |hit_test_region_list|. |
| void GetHitTestDataRecursively( |
| aura::Window* window, |
| viz::HitTestRegionList* hit_test_region_list) const; |
| |
| aura::Window* const window_ = nullptr; |
| |
| DISALLOW_COPY_AND_ASSIGN(HitTestDataProviderAura); |
| }; |
| |
| } // namespace aura |
| |
| #endif // UI_AURA_HIT_TEST_DATA_PROVIDER_AURA_H_ |