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/*
* 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_KEYBOARD_INPUT_MAPPER_H
#define _UI_INPUTREADER_KEYBOARD_INPUT_MAPPER_H
#include "InputMapper.h"
namespace android {
class KeyboardInputMapper : public InputMapper {
public:
KeyboardInputMapper(InputDeviceContext& deviceContext, uint32_t source, int32_t keyboardType);
virtual ~KeyboardInputMapper();
virtual uint32_t getSources() override;
virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo) override;
virtual void dump(std::string& dump) override;
virtual void configure(nsecs_t when, const InputReaderConfiguration* config,
uint32_t changes) override;
virtual void reset(nsecs_t when) override;
virtual void process(const RawEvent* rawEvent) override;
virtual int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode) override;
virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode) override;
virtual bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes,
const int32_t* keyCodes, uint8_t* outFlags) override;
virtual int32_t getMetaState() override;
virtual void updateMetaState(int32_t keyCode) override;
virtual std::optional<int32_t> getAssociatedDisplayId() override;
private:
// The current viewport.
std::optional<DisplayViewport> mViewport;
struct KeyDown {
int32_t keyCode;
int32_t scanCode;
};
uint32_t mSource;
int32_t mKeyboardType;
std::vector<KeyDown> mKeyDowns; // keys that are down
int32_t mMetaState;
nsecs_t mDownTime; // time of most recent key down
int32_t mCurrentHidUsage; // most recent HID usage seen this packet, or 0 if none
struct LedState {
bool avail; // led is available
bool on; // we think the led is currently on
};
LedState mCapsLockLedState;
LedState mNumLockLedState;
LedState mScrollLockLedState;
// Immutable configuration parameters.
struct Parameters {
bool orientationAware;
bool handlesKeyRepeat;
bool doNotWakeByDefault;
} mParameters;
void configureParameters();
void dumpParameters(std::string& dump);
int32_t getOrientation();
int32_t getDisplayId();
bool isKeyboardOrGamepadKey(int32_t scanCode);
bool isMediaKey(int32_t keyCode);
void processKey(nsecs_t when, bool down, int32_t scanCode, int32_t usageCode);
bool updateMetaStateIfNeeded(int32_t keyCode, bool down);
ssize_t findKeyDown(int32_t scanCode);
void resetLedState();
void initializeLedState(LedState& ledState, int32_t led);
void updateLedState(bool reset);
void updateLedStateForModifier(LedState& ledState, int32_t led, int32_t modifier, bool reset);
std::optional<DisplayViewport> findViewport(nsecs_t when,
const InputReaderConfiguration* config);
};
} // namespace android
#endif // _UI_INPUTREADER_KEYBOARD_INPUT_MAPPER_H
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