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/*
* Copyright (C) 2010 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 <input/Input.h>
#include <input/InputDevice.h>
#include <input/InputEventLabels.h>
#include <input/PropertyMap.h>
#include <utils/Errors.h>
namespace android {
class KeyLayoutMap;
class KeyCharacterMap;
/**
* Loads the key layout map and key character map for a keyboard device.
*/
class KeyMap {
public:
std::string keyLayoutFile;
std::shared_ptr<KeyLayoutMap> keyLayoutMap;
std::string keyCharacterMapFile;
std::shared_ptr<KeyCharacterMap> keyCharacterMap;
KeyMap();
~KeyMap();
status_t load(const InputDeviceIdentifier& deviceIdenfier,
const PropertyMap* deviceConfiguration);
inline bool haveKeyLayout() const {
return !keyLayoutFile.empty();
}
inline bool haveKeyCharacterMap() const {
return !keyCharacterMapFile.empty();
}
inline bool isComplete() const {
return haveKeyLayout() && haveKeyCharacterMap();
}
private:
bool probeKeyMap(const InputDeviceIdentifier& deviceIdentifier, const std::string& name);
status_t loadKeyLayout(const InputDeviceIdentifier& deviceIdentifier, const std::string& name);
status_t loadKeyCharacterMap(const InputDeviceIdentifier& deviceIdentifier,
const std::string& name);
};
/**
* Returns true if the keyboard is eligible for use as a built-in keyboard.
*/
extern bool isEligibleBuiltInKeyboard(const InputDeviceIdentifier& deviceIdentifier,
const PropertyMap* deviceConfiguration, const KeyMap* keyMap);
/**
* Updates a meta state field when a key is pressed or released.
*/
extern int32_t updateMetaState(int32_t keyCode, bool down, int32_t oldMetaState);
/**
* Normalizes the meta state such that if either the left or right modifier
* meta state bits are set then the result will also include the universal
* bit for that modifier.
*/
extern int32_t normalizeMetaState(int32_t oldMetaState);
/**
* Returns true if a key is a meta key like ALT or CAPS_LOCK.
*/
extern bool isMetaKey(int32_t keyCode);
} // namespace android
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