88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
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/*
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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 _UI_KEYBOARD_H
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#define _UI_KEYBOARD_H
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#include <ui/Input.h>
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#include <utils/Errors.h>
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#include <utils/String8.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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struct KeyMapInfo {
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String8 keyMapName;
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String8 keyLayoutFile;
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String8 keyCharacterMapFile;
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bool isDefaultKeyMap;
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KeyMapInfo() : isDefaultKeyMap(false) {
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}
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};
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/**
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* Resolves the key map to use for a particular keyboard device.
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*/
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extern status_t resolveKeyMap(const String8& deviceName, KeyMapInfo& outKeyMapInfo);
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/**
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* Sets keyboard system properties.
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*/
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extern void setKeyboardProperties(int32_t deviceId, const String8& deviceName,
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const KeyMapInfo& keyMapInfo);
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/**
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* Clears keyboard system properties.
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*/
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extern void clearKeyboardProperties(int32_t deviceId);
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/**
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* Gets the key character map filename for a device using inspecting system properties
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* and then falling back on a default key character map if necessary.
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* Returns a NAME_NOT_FOUND if none found.
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*/
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extern status_t getKeyCharacterMapFile(int32_t deviceId, String8& outKeyCharacterMapFile);
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/**
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* Gets a key code by its short form label, eg. "HOME".
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* Returns 0 if unknown.
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*/
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extern int32_t getKeyCodeByLabel(const char* label);
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/**
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* Gets a key flag by its short form label, eg. "WAKE".
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* Returns 0 if unknown.
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*/
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extern uint32_t getKeyFlagByLabel(const char* label);
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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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} // namespace android
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#endif // _UI_KEYBOARD_H
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