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104 lines
3.0 KiB
104 lines
3.0 KiB
/* |
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* Copyright (C) 2010 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 _LIBINPUT_KEYBOARD_H |
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#define _LIBINPUT_KEYBOARD_H |
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#include <input/Input.h> |
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#include <input/InputDevice.h> |
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#include <input/InputEventLabels.h> |
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#include <utils/Errors.h> |
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#include <utils/String8.h> |
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#include <utils/PropertyMap.h> |
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namespace android { |
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enum { |
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/* Device id of the built in keyboard. */ |
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DEVICE_ID_BUILT_IN_KEYBOARD = 0, |
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/* Device id of a generic virtual keyboard with a full layout that can be used |
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* to synthesize key events. */ |
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DEVICE_ID_VIRTUAL_KEYBOARD = -1, |
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}; |
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class KeyLayoutMap; |
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class KeyCharacterMap; |
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/** |
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* Loads the key layout map and key character map for a keyboard device. |
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*/ |
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class KeyMap { |
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public: |
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String8 keyLayoutFile; |
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sp<KeyLayoutMap> keyLayoutMap; |
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String8 keyCharacterMapFile; |
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sp<KeyCharacterMap> keyCharacterMap; |
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KeyMap(); |
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~KeyMap(); |
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status_t load(const InputDeviceIdentifier& deviceIdenfier, |
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const PropertyMap* deviceConfiguration); |
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inline bool haveKeyLayout() const { |
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return !keyLayoutFile.isEmpty(); |
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} |
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inline bool haveKeyCharacterMap() const { |
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return !keyCharacterMapFile.isEmpty(); |
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} |
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inline bool isComplete() const { |
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return haveKeyLayout() && haveKeyCharacterMap(); |
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} |
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private: |
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bool probeKeyMap(const InputDeviceIdentifier& deviceIdentifier, const String8& name); |
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status_t loadKeyLayout(const InputDeviceIdentifier& deviceIdentifier, const String8& name); |
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status_t loadKeyCharacterMap(const InputDeviceIdentifier& deviceIdentifier, |
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const String8& name); |
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String8 getPath(const InputDeviceIdentifier& deviceIdentifier, |
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const String8& name, InputDeviceConfigurationFileType type); |
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}; |
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/** |
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* Returns true if the keyboard is eligible for use as a built-in keyboard. |
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*/ |
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extern bool isEligibleBuiltInKeyboard(const InputDeviceIdentifier& deviceIdentifier, |
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const PropertyMap* deviceConfiguration, const KeyMap* keyMap); |
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/** |
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* Updates a meta state field when a key is pressed or released. |
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*/ |
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extern int32_t updateMetaState(int32_t keyCode, bool down, int32_t oldMetaState); |
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/** |
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* Normalizes the meta state such that if either the left or right modifier |
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* meta state bits are set then the result will also include the universal |
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* bit for that modifier. |
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*/ |
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extern int32_t normalizeMetaState(int32_t oldMetaState); |
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/** |
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* Returns true if a key is a meta key like ALT or CAPS_LOCK. |
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*/ |
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extern bool isMetaKey(int32_t keyCode); |
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} // namespace android |
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#endif // _LIBINPUT_KEYBOARD_H
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