/*

* Copyright (C) 2010 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.

*/

#pragma once

#include <stdint.h>

#include <input/Input.h>

#include <utils/Errors.h>

#include <utils/KeyedVector.h>

#include <utils/Tokenizer.h>

#include <utils/Unicode.h>

#include <vector>

namespace android {

/* Describes a virtual key. */

struct VirtualKeyDefinition {

int32_t scanCode;

// configured position data, specified in display coords

int32_t centerX;

int32_t centerY;

int32_t width;

int32_t height;

};

/**

* Describes a collection of virtual keys on a touch screen in terms of

* virtual scan codes and hit rectangles.

*

* This object is immutable after it has been loaded.

*/

class VirtualKeyMap {

public:

~VirtualKeyMap();

static std::unique_ptr<VirtualKeyMap> load(const std::string& filename);

inline const std::vector<VirtualKeyDefinition>& getVirtualKeys() const {

return mVirtualKeys;

}

private:

class Parser {

VirtualKeyMap* mMap;

Tokenizer* mTokenizer;

public:

Parser(VirtualKeyMap* map, Tokenizer* tokenizer);

~Parser();

status_t parse();

private:

bool consumeFieldDelimiterAndSkipWhitespace();

bool parseNextIntField(int32_t* outValue);

};

std::vector<VirtualKeyDefinition> mVirtualKeys;

VirtualKeyMap();

};

} // namespace android