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comparison: widget/gonk/libui/KeyLayoutMap.h
widget/gonk/libui/KeyLayoutMap.h
- branch
- TOR_BUG_3246
- changeset 4
- fc2d59ddac77
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| -1:000000000000 | 0:5a3fea9f356b |
|---|---|
| 1 /* | |
| 2 * Copyright (C) 2008 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_KEY_LAYOUT_MAP_H | |
| 18 #define _ANDROIDFW_KEY_LAYOUT_MAP_H | |
| 19 | |
| 20 #include <stdint.h> | |
| 21 #include <utils/Errors.h> | |
| 22 #include <utils/KeyedVector.h> | |
| 23 #include "Tokenizer.h" | |
| 24 #include <utils/RefBase.h> | |
| 25 | |
| 26 namespace android { | |
| 27 | |
| 28 struct AxisInfo { | |
| 29 enum Mode { | |
| 30 // Axis value is reported directly. | |
| 31 MODE_NORMAL = 0, | |
| 32 // Axis value should be inverted before reporting. | |
| 33 MODE_INVERT = 1, | |
| 34 // Axis value should be split into two axes | |
| 35 MODE_SPLIT = 2, | |
| 36 }; | |
| 37 | |
| 38 // Axis mode. | |
| 39 Mode mode; | |
| 40 | |
| 41 // Axis id. | |
| 42 // When split, this is the axis used for values smaller than the split position. | |
| 43 int32_t axis; | |
| 44 | |
| 45 // When split, this is the axis used for values after higher than the split position. | |
| 46 int32_t highAxis; | |
| 47 | |
| 48 // The split value, or 0 if not split. | |
| 49 int32_t splitValue; | |
| 50 | |
| 51 // The flat value, or -1 if none. | |
| 52 int32_t flatOverride; | |
| 53 | |
| 54 AxisInfo() : mode(MODE_NORMAL), axis(-1), highAxis(-1), splitValue(0), flatOverride(-1) { | |
| 55 } | |
| 56 }; | |
| 57 | |
| 58 /** | |
| 59 * Describes a mapping from keyboard scan codes and joystick axes to Android key codes and axes. | |
| 60 * | |
| 61 * This object is immutable after it has been loaded. | |
| 62 */ | |
| 63 class KeyLayoutMap : public RefBase { | |
| 64 public: | |
| 65 static status_t load(const String8& filename, sp<KeyLayoutMap>* outMap); | |
| 66 | |
| 67 status_t mapKey(int32_t scanCode, int32_t usageCode, | |
| 68 int32_t* outKeyCode, uint32_t* outFlags) const; | |
| 69 status_t findScanCodesForKey(int32_t keyCode, Vector<int32_t>* outScanCodes) const; | |
| 70 | |
| 71 status_t mapAxis(int32_t scanCode, AxisInfo* outAxisInfo) const; | |
| 72 | |
| 73 protected: | |
| 74 virtual ~KeyLayoutMap(); | |
| 75 | |
| 76 private: | |
| 77 struct Key { | |
| 78 int32_t keyCode; | |
| 79 uint32_t flags; | |
| 80 }; | |
| 81 | |
| 82 KeyedVector<int32_t, Key> mKeysByScanCode; | |
| 83 KeyedVector<int32_t, Key> mKeysByUsageCode; | |
| 84 KeyedVector<int32_t, AxisInfo> mAxes; | |
| 85 | |
| 86 KeyLayoutMap(); | |
| 87 | |
| 88 const Key* getKey(int32_t scanCode, int32_t usageCode) const; | |
| 89 | |
| 90 class Parser { | |
| 91 KeyLayoutMap* mMap; | |
| 92 Tokenizer* mTokenizer; | |
| 93 | |
| 94 public: | |
| 95 Parser(KeyLayoutMap* map, Tokenizer* tokenizer); | |
| 96 ~Parser(); | |
| 97 status_t parse(); | |
| 98 | |
| 99 private: | |
| 100 status_t parseKey(); | |
| 101 status_t parseAxis(); | |
| 102 }; | |
| 103 }; | |
| 104 | |
| 105 } // namespace android | |
| 106 | |
| 107 #endif // _ANDROIDFW_KEY_LAYOUT_MAP_H |
