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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _UI_TOUCH_SPOT_CONTROLLER_H
#define _UI_TOUCH_SPOT_CONTROLLER_H
#include <functional>
#include "PointerControllerContext.h"
namespace android {
/*
* Helper class for PointerController that specifically handles
* touch spot resources and actions for a single display.
*/
class TouchSpotController {
public:
TouchSpotController(int32_t displayId, PointerControllerContext& context);
~TouchSpotController();
void setSpots(const PointerCoords* spotCoords, const uint32_t* spotIdToIndex,
BitSet32 spotIdBits);
void clearSpots();
void reloadSpotResources();
bool doAnimations(nsecs_t timestamp);
private:
struct Spot {
static const uint32_t INVALID_ID = 0xffffffff;
uint32_t id;
sp<Sprite> sprite;
float alpha;
float scale;
float x, y;
inline Spot(uint32_t id, const sp<Sprite>& sprite)
: id(id),
sprite(sprite),
alpha(1.0f),
scale(1.0f),
x(0.0f),
y(0.0f),
mLastIcon(nullptr) {}
void updateSprite(const SpriteIcon* icon, float x, float y, int32_t displayId);
private:
const SpriteIcon* mLastIcon;
};
int32_t mDisplayId;
mutable std::mutex mLock;
PointerResources mResources;
PointerControllerContext& mContext;
static constexpr size_t MAX_RECYCLED_SPRITES = 12;
static constexpr size_t MAX_SPOTS = 12;
struct Locked {
std::vector<Spot*> displaySpots;
std::vector<sp<Sprite>> recycledSprites;
bool animating{false};
} mLocked GUARDED_BY(mLock);
Spot* getSpot(uint32_t id, const std::vector<Spot*>& spots);
Spot* createAndAddSpotLocked(uint32_t id, std::vector<Spot*>& spots);
Spot* removeFirstFadingSpotLocked(std::vector<Spot*>& spots);
void releaseSpotLocked(Spot* spot);
void fadeOutAndReleaseSpotLocked(Spot* spot);
void fadeOutAndReleaseAllSpotsLocked();
bool doFadingAnimationLocked(nsecs_t timestamp);
void startAnimationLocked();
};
} // namespace android
#endif // _UI_TOUCH_SPOT_CONTROLLER_H
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