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comparison: widget/gonk/libui/Keyboard.h
widget/gonk/libui/Keyboard.h
- branch
- TOR_BUG_3246
- changeset 4
- fc2d59ddac77
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| -1:000000000000 | 0:0d1a57334112 |
|---|---|
| 1 /* | |
| 2 * Copyright (C) 2010 The Android Open Source Project | |
| 3 * | |
| 4 * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 5 * you may not use this file except in compliance with the License. | |
| 6 * You may obtain a copy of the License at | |
| 7 * | |
| 8 * http://www.apache.org/licenses/LICENSE-2.0 | |
| 9 * | |
| 10 * Unless required by applicable law or agreed to in writing, software | |
| 11 * distributed under the License is distributed on an "AS IS" BASIS, | |
| 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 13 * See the License for the specific language governing permissions and | |
| 14 * limitations under the License. | |
| 15 */ | |
| 16 | |
| 17 #ifndef _ANDROIDFW_KEYBOARD_H | |
| 18 #define _ANDROIDFW_KEYBOARD_H | |
| 19 | |
| 20 #include "Input.h" | |
| 21 #include "InputDevice.h" | |
| 22 #include <utils/Errors.h> | |
| 23 #include <utils/String8.h> | |
| 24 #include <utils/PropertyMap.h> | |
| 25 | |
| 26 namespace android { | |
| 27 | |
| 28 enum { | |
| 29 /* Device id of the built in keyboard. */ | |
| 30 DEVICE_ID_BUILT_IN_KEYBOARD = 0, | |
| 31 | |
| 32 /* Device id of a generic virtual keyboard with a full layout that can be used | |
| 33 * to synthesize key events. */ | |
| 34 DEVICE_ID_VIRTUAL_KEYBOARD = -1, | |
| 35 }; | |
| 36 | |
| 37 class KeyLayoutMap; | |
| 38 class KeyCharacterMap; | |
| 39 | |
| 40 /** | |
| 41 * Loads the key layout map and key character map for a keyboard device. | |
| 42 */ | |
| 43 class KeyMap { | |
| 44 public: | |
| 45 String8 keyLayoutFile; | |
| 46 sp<KeyLayoutMap> keyLayoutMap; | |
| 47 | |
| 48 String8 keyCharacterMapFile; | |
| 49 sp<KeyCharacterMap> keyCharacterMap; | |
| 50 | |
| 51 KeyMap(); | |
| 52 ~KeyMap(); | |
| 53 | |
| 54 status_t load(const InputDeviceIdentifier& deviceIdenfier, | |
| 55 const PropertyMap* deviceConfiguration); | |
| 56 | |
| 57 inline bool haveKeyLayout() const { | |
| 58 return !keyLayoutFile.isEmpty(); | |
| 59 } | |
| 60 | |
| 61 inline bool haveKeyCharacterMap() const { | |
| 62 return !keyCharacterMapFile.isEmpty(); | |
| 63 } | |
| 64 | |
| 65 inline bool isComplete() const { | |
| 66 return haveKeyLayout() && haveKeyCharacterMap(); | |
| 67 } | |
| 68 | |
| 69 private: | |
| 70 bool probeKeyMap(const InputDeviceIdentifier& deviceIdentifier, const String8& name); | |
| 71 status_t loadKeyLayout(const InputDeviceIdentifier& deviceIdentifier, const String8& name); | |
| 72 status_t loadKeyCharacterMap(const InputDeviceIdentifier& deviceIdentifier, | |
| 73 const String8& name); | |
| 74 String8 getPath(const InputDeviceIdentifier& deviceIdentifier, | |
| 75 const String8& name, InputDeviceConfigurationFileType type); | |
| 76 }; | |
| 77 | |
| 78 /** | |
| 79 * Returns true if the keyboard is eligible for use as a built-in keyboard. | |
| 80 */ | |
| 81 extern bool isEligibleBuiltInKeyboard(const InputDeviceIdentifier& deviceIdentifier, | |
| 82 const PropertyMap* deviceConfiguration, const KeyMap* keyMap); | |
| 83 | |
| 84 /** | |
| 85 * Gets a key code by its short form label, eg. "HOME". | |
| 86 * Returns 0 if unknown. | |
| 87 */ | |
| 88 extern int32_t getKeyCodeByLabel(const char* label); | |
| 89 | |
| 90 /** | |
| 91 * Gets a key flag by its short form label, eg. "WAKE". | |
| 92 * Returns 0 if unknown. | |
| 93 */ | |
| 94 extern uint32_t getKeyFlagByLabel(const char* label); | |
| 95 | |
| 96 /** | |
| 97 * Gets a axis by its short form label, eg. "X". | |
| 98 * Returns -1 if unknown. | |
| 99 */ | |
| 100 extern int32_t getAxisByLabel(const char* label); | |
| 101 | |
| 102 /** | |
| 103 * Gets a axis label by its id. | |
| 104 * Returns NULL if unknown. | |
| 105 */ | |
| 106 extern const char* getAxisLabel(int32_t axisId); | |
| 107 | |
| 108 /** | |
| 109 * Updates a meta state field when a key is pressed or released. | |
| 110 */ | |
| 111 extern int32_t updateMetaState(int32_t keyCode, bool down, int32_t oldMetaState); | |
| 112 | |
| 113 /** | |
| 114 * Returns true if a key is a meta key like ALT or CAPS_LOCK. | |
| 115 */ | |
| 116 extern bool isMetaKey(int32_t keyCode); | |
| 117 | |
| 118 } // namespace android | |
| 119 | |
| 120 #endif // _ANDROIDFW_KEYBOARD_H |
