db360642ed
Use Vendor ID, Product ID and optionally the Version to locate keymaps and configuration files for external devices. Moved virtual key definition parsing to native code so that EventHub can identify touch screens with virtual keys and load the appropriate key layout file. Cleaned up a lot of old code in EventHub. Fixed a regression in ViewRoot's fallback event handling. Fixed a minor bug in FileMap that caused it to try to munmap or close invalid handled when released if the attempt to map the file failed. Added a couple of new String8 conveniences for formatting strings. Modified Tokenizer to fall back to open+read when mmap fails since we can't mmap sysfs files as needed to open the virtual key definition files in /sys/board_properties/. Change-Id: I6ca5e5f9547619fd082ddac47e87ce185da69ee6
80 lines
1.9 KiB
C++
80 lines
1.9 KiB
C++
/*
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* Copyright (C) 2010 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_VIRTUAL_KEY_MAP_H
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#define _UI_VIRTUAL_KEY_MAP_H
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#include <stdint.h>
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#include <ui/Input.h>
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#include <utils/Errors.h>
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#include <utils/KeyedVector.h>
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#include <utils/Tokenizer.h>
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#include <utils/String8.h>
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#include <utils/Unicode.h>
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namespace android {
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/* Describes a virtual key. */
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struct VirtualKeyDefinition {
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int32_t scanCode;
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// configured position data, specified in display coords
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int32_t centerX;
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int32_t centerY;
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int32_t width;
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int32_t height;
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};
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/**
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* Describes a collection of virtual keys on a touch screen in terms of
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* virtual scan codes and hit rectangles.
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*/
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class VirtualKeyMap {
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public:
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~VirtualKeyMap();
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static status_t load(const String8& filename, VirtualKeyMap** outMap);
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inline const Vector<VirtualKeyDefinition>& getVirtualKeys() const {
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return mVirtualKeys;
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}
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private:
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class Parser {
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VirtualKeyMap* mMap;
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Tokenizer* mTokenizer;
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public:
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Parser(VirtualKeyMap* map, Tokenizer* tokenizer);
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~Parser();
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status_t parse();
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private:
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bool consumeFieldDelimiterAndSkipWhitespace();
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bool parseNextIntField(int32_t* outValue);
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};
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Vector<VirtualKeyDefinition> mVirtualKeys;
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VirtualKeyMap();
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};
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} // namespace android
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#endif // _UI_KEY_CHARACTER_MAP_H
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