/* * Copyright (C) 2008 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. */ #ifndef _LIBINPUT_KEY_LAYOUT_MAP_H #define _LIBINPUT_KEY_LAYOUT_MAP_H #include #include #include #include #include namespace android { struct AxisInfo { enum Mode { // Axis value is reported directly. MODE_NORMAL = 0, // Axis value should be inverted before reporting. MODE_INVERT = 1, // Axis value should be split into two axes MODE_SPLIT = 2, }; // Axis mode. Mode mode; // Axis id. // When split, this is the axis used for values smaller than the split position. int32_t axis; // When split, this is the axis used for values after higher than the split position. int32_t highAxis; // The split value, or 0 if not split. int32_t splitValue; // The flat value, or -1 if none. int32_t flatOverride; AxisInfo() : mode(MODE_NORMAL), axis(-1), highAxis(-1), splitValue(0), flatOverride(-1) { } }; /** * Describes a mapping from keyboard scan codes and joystick axes to Android key codes and axes. * * This object is immutable after it has been loaded. */ class KeyLayoutMap : public RefBase { public: static status_t load(const String8& filename, sp* outMap); status_t mapKey(int32_t scanCode, int32_t usageCode, int32_t* outKeyCode, uint32_t* outFlags) const; status_t findScanCodesForKey(int32_t keyCode, Vector* outScanCodes) const; status_t mapAxis(int32_t scanCode, AxisInfo* outAxisInfo) const; protected: virtual ~KeyLayoutMap(); private: struct Key { int32_t keyCode; uint32_t flags; }; KeyedVector mKeysByScanCode; KeyedVector mKeysByUsageCode; KeyedVector mAxes; KeyLayoutMap(); const Key* getKey(int32_t scanCode, int32_t usageCode) const; class Parser { KeyLayoutMap* mMap; Tokenizer* mTokenizer; public: Parser(KeyLayoutMap* map, Tokenizer* tokenizer); ~Parser(); status_t parse(); private: status_t parseKey(); status_t parseAxis(); }; }; } // namespace android #endif // _LIBINPUT_KEY_LAYOUT_MAP_H