| // 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 CC_LAYERS_TOUCH_ACTION_REGION_H_ |
| #define CC_LAYERS_TOUCH_ACTION_REGION_H_ |
| |
| #include "base/containers/flat_map.h" |
| #include "cc/base/region.h" |
| #include "cc/cc_export.h" |
| #include "cc/input/touch_action.h" |
| |
| namespace cc { |
| |
| class Rect; |
| |
| class CC_EXPORT TouchActionRegion { |
| public: |
| TouchActionRegion(); |
| TouchActionRegion(const TouchActionRegion& touch_action_region); |
| TouchActionRegion(TouchActionRegion&& touch_action_region); |
| ~TouchActionRegion(); |
| |
| void Union(TouchAction, const gfx::Rect&); |
| // Return all regions with any touch action. |
| Region GetAllRegions() const; |
| const Region& GetRegionForTouchAction(TouchAction) const; |
| |
| bool IsEmpty() const { return map_.empty(); } |
| |
| // Returns the touch actions that we are sure will be allowed at the point |
| // by finding the intersection of all touch actions whose regions contain the |
| // given point. If the map is empty, |kTouchActionAuto| is returned since no |
| // touch actions have been explicitly defined and the default touch action |
| // is auto. |
| TouchAction GetAllowedTouchAction(const gfx::Point&) const; |
| TouchActionRegion& operator=(const TouchActionRegion& other); |
| TouchActionRegion& operator=(TouchActionRegion&& other); |
| bool operator==(const TouchActionRegion& other) const; |
| |
| private: |
| base::flat_map<TouchAction, Region> map_; |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_LAYERS_TOUCH_ACTION_REGION_H_ |