services/inputflinger/reader/mapper/accumulator/TouchButtonAccumulator.h

/*
 * Copyright (C) 2019 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_INPUTREADER_TOUCH_BUTTON_ACCUMULATOR_H
#define _UI_INPUTREADER_TOUCH_BUTTON_ACCUMULATOR_H

#include <stdint.h>

namespace android {

class InputDevice;
struct RawEvent;

/* Keeps track of the state of touch, stylus and tool buttons. */
class TouchButtonAccumulator {
public:
    TouchButtonAccumulator();
    void configure(InputDevice* device);
    void reset(InputDevice* device);

    void process(const RawEvent* rawEvent);

    uint32_t getButtonState() const;
    int32_t getToolType() const;
    bool isToolActive() const;
    bool isHovering() const;
    bool hasStylus() const;

private:
    bool mHaveBtnTouch;
    bool mHaveStylus;

    bool mBtnTouch;
    bool mBtnStylus;
    bool mBtnStylus2;
    bool mBtnToolFinger;
    bool mBtnToolPen;
    bool mBtnToolRubber;
    bool mBtnToolBrush;
    bool mBtnToolPencil;
    bool mBtnToolAirbrush;
    bool mBtnToolMouse;
    bool mBtnToolLens;
    bool mBtnToolDoubleTap;
    bool mBtnToolTripleTap;
    bool mBtnToolQuadTap;

    void clearButtons();
};

} // namespace android

#endif // _UI_INPUTREADER_TOUCH_BUTTON_ACCUMULATOR_H