1 /* 2 * Copyright (C) 2020 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef _UI_TOUCH_SPOT_CONTROLLER_H 18 #define _UI_TOUCH_SPOT_CONTROLLER_H 19 20 #include <functional> 21 22 #include "PointerControllerContext.h" 23 24 namespace android { 25 26 /* 27 * Helper class for PointerController that specifically handles 28 * touch spot resources and actions for a single display. 29 */ 30 class TouchSpotController { 31 public: 32 TouchSpotController(int32_t displayId, PointerControllerContext& context); 33 ~TouchSpotController(); 34 void setSpots(const PointerCoords* spotCoords, const uint32_t* spotIdToIndex, 35 BitSet32 spotIdBits); 36 void clearSpots(); 37 38 void reloadSpotResources(); 39 bool doAnimations(nsecs_t timestamp); 40 41 private: 42 struct Spot { 43 static const uint32_t INVALID_ID = 0xffffffff; 44 45 uint32_t id; 46 sp<Sprite> sprite; 47 float alpha; 48 float scale; 49 float x, y; 50 SpotSpot51 inline Spot(uint32_t id, const sp<Sprite>& sprite) 52 : id(id), 53 sprite(sprite), 54 alpha(1.0f), 55 scale(1.0f), 56 x(0.0f), 57 y(0.0f), 58 mLastIcon(nullptr) {} 59 60 void updateSprite(const SpriteIcon* icon, float x, float y, int32_t displayId); 61 62 private: 63 const SpriteIcon* mLastIcon; 64 }; 65 66 int32_t mDisplayId; 67 68 mutable std::mutex mLock; 69 70 PointerResources mResources; 71 72 PointerControllerContext& mContext; 73 74 static constexpr size_t MAX_RECYCLED_SPRITES = 12; 75 static constexpr size_t MAX_SPOTS = 12; 76 77 struct Locked { 78 std::vector<Spot*> displaySpots; 79 std::vector<sp<Sprite>> recycledSprites; 80 81 bool animating{false}; 82 83 } mLocked GUARDED_BY(mLock); 84 85 Spot* getSpot(uint32_t id, const std::vector<Spot*>& spots); 86 Spot* createAndAddSpotLocked(uint32_t id, std::vector<Spot*>& spots); 87 Spot* removeFirstFadingSpotLocked(std::vector<Spot*>& spots); 88 void releaseSpotLocked(Spot* spot); 89 void fadeOutAndReleaseSpotLocked(Spot* spot); 90 void fadeOutAndReleaseAllSpotsLocked(); 91 bool doFadingAnimationLocked(nsecs_t timestamp); 92 void startAnimationLocked(); 93 }; 94 95 } // namespace android 96 97 #endif // _UI_TOUCH_SPOT_CONTROLLER_H 98