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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.
*/
#pragma once
#include "HidUsageAccumulator.h"
#include "InputMapper.h"
namespace android {
class KeyboardInputMapper : public InputMapper {
public:
template <class T, class... Args>
friend std::unique_ptr<T> createInputMapper(InputDeviceContext& deviceContext,
const InputReaderConfiguration& readerConfig,
Args... args);
~KeyboardInputMapper() override = default;
uint32_t getSources() const override;
void populateDeviceInfo(InputDeviceInfo& deviceInfo) override;
void dump(std::string& dump) override;
[[nodiscard]] std::list<NotifyArgs> reconfigure(nsecs_t when,
const InputReaderConfiguration& config,
ConfigurationChanges changes) override;
[[nodiscard]] std::list<NotifyArgs> reset(nsecs_t when) override;
[[nodiscard]] std::list<NotifyArgs> process(const RawEvent* rawEvent) override;
int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode) override;
int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode) override;
bool markSupportedKeyCodes(uint32_t sourceMask, const std::vector<int32_t>& keyCodes,
uint8_t* outFlags) override;
int32_t getKeyCodeForKeyLocation(int32_t locationKeyCode) const override;
int32_t getMetaState() override;
bool updateMetaState(int32_t keyCode) override;
std::optional<int32_t> getAssociatedDisplayId() override;
void updateLedState(bool reset) override;
private:
// The current viewport.
std::optional<DisplayViewport> mViewport{};
struct KeyDown {
nsecs_t downTime{};
int32_t keyCode{};
int32_t scanCode{};
int32_t flags{};
};
uint32_t mSource{};
int32_t mKeyboardType{};
std::optional<KeyboardLayoutInfo> mKeyboardLayoutInfo;
std::vector<KeyDown> mKeyDowns{}; // keys that are down
int32_t mMetaState{};
HidUsageAccumulator mHidUsageAccumulator;
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{};
KeyboardInputMapper(InputDeviceContext& deviceContext,
const InputReaderConfiguration& readerConfig, uint32_t source,
int32_t keyboardType);
void configureParameters();
void dumpParameters(std::string& dump) const;
ui::Rotation getOrientation();
int32_t getDisplayId();
[[nodiscard]] std::list<NotifyArgs> processKey(nsecs_t when, nsecs_t readTime, bool down,
int32_t scanCode, int32_t usageCode);
bool updateMetaStateIfNeeded(int32_t keyCode, bool down);
std::optional<size_t> findKeyDownIndex(int32_t scanCode);
std::optional<KeyboardLayoutInfo> getKeyboardLayoutInfo() const;
bool updateKeyboardLayoutOverlay();
void resetLedState();
void initializeLedState(LedState& ledState, int32_t led);
void updateLedStateForModifier(LedState& ledState, int32_t led, int32_t modifier, bool reset);
std::optional<DisplayViewport> findViewport(const InputReaderConfiguration& readerConfig);
[[nodiscard]] std::list<NotifyArgs> cancelAllDownKeys(nsecs_t when);
void onKeyDownProcessed(nsecs_t downTime);
};
} // namespace android
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