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100 lines
2.5 KiB
C++
100 lines
2.5 KiB
C++
/*
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* Copyright (C) 2008 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_KEY_LAYOUT_MAP_H
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#define _UI_KEY_LAYOUT_MAP_H
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#include <stdint.h>
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#include <utils/Errors.h>
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#include <utils/KeyedVector.h>
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#include "Tokenizer.h"
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namespace android {
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struct AxisInfo {
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enum Mode {
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// Axis value is reported directly.
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MODE_NORMAL = 0,
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// Axis value should be inverted before reporting.
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MODE_INVERT = 1,
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// Axis value should be split into two axes
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MODE_SPLIT = 2,
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};
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// Axis mode.
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Mode mode;
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// Axis id.
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// When split, this is the axis used for values smaller than the split position.
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int32_t axis;
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// When split, this is the axis used for values after higher than the split position.
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int32_t highAxis;
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// The split value, or 0 if not split.
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int32_t splitValue;
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// The flat value, or -1 if none.
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int32_t flatOverride;
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AxisInfo() : mode(MODE_NORMAL), axis(-1), highAxis(-1), splitValue(0), flatOverride(-1) {
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}
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};
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/**
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* Describes a mapping from keyboard scan codes and joystick axes to Android key codes and axes.
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*/
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class KeyLayoutMap {
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public:
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~KeyLayoutMap();
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static status_t load(const String8& filename, KeyLayoutMap** outMap);
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status_t mapKey(int32_t scanCode, int32_t* keyCode, uint32_t* flags) const;
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status_t findScanCodesForKey(int32_t keyCode, Vector<int32_t>* outScanCodes) const;
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status_t mapAxis(int32_t scanCode, AxisInfo* outAxisInfo) const;
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private:
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struct Key {
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int32_t keyCode;
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uint32_t flags;
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};
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KeyedVector<int32_t, Key> mKeys;
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KeyedVector<int32_t, AxisInfo> mAxes;
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KeyLayoutMap();
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class Parser {
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KeyLayoutMap* mMap;
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Tokenizer* mTokenizer;
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public:
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Parser(KeyLayoutMap* map, Tokenizer* tokenizer);
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~Parser();
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status_t parse();
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private:
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status_t parseKey();
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status_t parseAxis();
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};
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};
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} // namespace android
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#endif // _UI_KEY_LAYOUT_MAP_H
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