Merge "Refactor of PointerController" am: 3ca2400a53 am: adaedfa3fa am: 15bbc06795 am: 13d7aeb155

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1364598

Change-Id: I62e8f66b29381355999a354a69258d006658193e

1 files changed, 91 insertions, 0 deletions

diff --git a/libs/input/TouchSpotController.h b/libs/input/TouchSpotController.h
new file mode 100644
index 000000000000..f3b355010bee
--- /dev/null
+++ b/libs/input/TouchSpotController.h
@@ -0,0 +1,91 @@
+/*
+ * 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 "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 doFadingAnimation(nsecs_t timestamp, bool keepAnimating);
+
+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;
+
+    } 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();
+};
+
+} // namespace android
+
+#endif // _UI_TOUCH_SPOT_CONTROLLER_H