134 lines
4.2 KiB
C++
134 lines
4.2 KiB
C++
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _UI_INPUTREADER_CURSOR_INPUT_MAPPER_H
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#define _UI_INPUTREADER_CURSOR_INPUT_MAPPER_H
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#include "CursorButtonAccumulator.h"
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#include "CursorScrollAccumulator.h"
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#include "InputMapper.h"
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#include <PointerControllerInterface.h>
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#include <input/VelocityControl.h>
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namespace android {
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class VelocityControl;
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class PointerControllerInterface;
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class CursorButtonAccumulator;
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class CursorScrollAccumulator;
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/* Keeps track of cursor movements. */
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class CursorMotionAccumulator {
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public:
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CursorMotionAccumulator();
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void reset(InputDeviceContext& deviceContext);
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void process(const RawEvent* rawEvent);
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void finishSync();
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inline int32_t getRelativeX() const { return mRelX; }
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inline int32_t getRelativeY() const { return mRelY; }
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private:
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int32_t mRelX;
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int32_t mRelY;
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void clearRelativeAxes();
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};
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class CursorInputMapper : public InputMapper {
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public:
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explicit CursorInputMapper(InputDeviceContext& deviceContext);
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virtual ~CursorInputMapper();
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virtual uint32_t getSources() const override;
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virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo) override;
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virtual void dump(std::string& dump) override;
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virtual void configure(nsecs_t when, const InputReaderConfiguration* config,
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uint32_t changes) override;
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virtual void reset(nsecs_t when) override;
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virtual void process(const RawEvent* rawEvent) override;
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virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode) override;
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virtual std::optional<int32_t> getAssociatedDisplayId() override;
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private:
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// Amount that trackball needs to move in order to generate a key event.
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static const int32_t TRACKBALL_MOVEMENT_THRESHOLD = 6;
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// Immutable configuration parameters.
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struct Parameters {
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enum class Mode {
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// In POINTER mode, the device is a mouse that controls the mouse cursor on the screen,
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// reporting absolute screen locations using SOURCE_MOUSE.
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POINTER,
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// A mouse device in POINTER mode switches to the POINTER_RELATIVE mode when Pointer
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// Capture is enabled, and reports relative values only using SOURCE_MOUSE_RELATIVE.
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POINTER_RELATIVE,
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// A device in NAVIGATION mode emits relative values using SOURCE_TRACKBALL.
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NAVIGATION,
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ftl_last = NAVIGATION,
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};
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Mode mode;
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bool hasAssociatedDisplay;
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bool orientationAware;
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} mParameters;
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CursorButtonAccumulator mCursorButtonAccumulator;
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CursorMotionAccumulator mCursorMotionAccumulator;
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CursorScrollAccumulator mCursorScrollAccumulator;
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int32_t mSource;
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float mXScale;
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float mYScale;
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float mXPrecision;
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float mYPrecision;
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float mVWheelScale;
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float mHWheelScale;
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// Velocity controls for mouse pointer and wheel movements.
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// The controls for X and Y wheel movements are separate to keep them decoupled.
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VelocityControl mPointerVelocityControl;
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VelocityControl mWheelXVelocityControl;
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VelocityControl mWheelYVelocityControl;
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// The display that events generated by this mapper should target. This can be set to
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// ADISPLAY_ID_NONE to target the focused display. If there is no display target (i.e.
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// std::nullopt), all events will be ignored.
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std::optional<int32_t> mDisplayId;
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int32_t mOrientation;
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std::shared_ptr<PointerControllerInterface> mPointerController;
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int32_t mButtonState;
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nsecs_t mDownTime;
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void configureParameters();
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void dumpParameters(std::string& dump);
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void sync(nsecs_t when, nsecs_t readTime);
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};
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} // namespace android
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#endif // _UI_INPUTREADER_CURSOR_INPUT_MAPPER_H
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