The Tor Browser: widget/gonk/libui/KeyLayoutMap.cpp@fc2d59ddac77

     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  */

    17 #define LOG_TAG "KeyLayoutMap"

    18 #include "cutils_log.h"

    20 #include <stdlib.h>

    21 #include "android_keycodes.h"

    22 #include "Keyboard.h"

    23 #include "KeyLayoutMap.h"

    24 #include <utils/Errors.h>

    25 #include "Tokenizer.h"

    26 #include <utils/Timers.h>

    28 // Enables debug output for the parser.

    29 #define DEBUG_PARSER 0

    31 // Enables debug output for parser performance.

    32 #define DEBUG_PARSER_PERFORMANCE 0

    34 // Enables debug output for mapping.

    35 #define DEBUG_MAPPING 0

    38 namespace android {

    40 static const char* WHITESPACE = " \t\r";

    42 // --- KeyLayoutMap ---

    44 KeyLayoutMap::KeyLayoutMap() {

    45 }

    47 KeyLayoutMap::~KeyLayoutMap() {

    48 }

    50 status_t KeyLayoutMap::load(const String8& filename, sp<KeyLayoutMap>* outMap) {

    51     outMap->clear();

    53     Tokenizer* tokenizer;

    54     status_t status = Tokenizer::open(filename, &tokenizer);

    55     if (status) {

    56         ALOGE("Error %d opening key layout map file %s.", status, filename.string());

    57     } else {

    58         sp<KeyLayoutMap> map = new KeyLayoutMap();

    59         if (!map.get()) {

    60             ALOGE("Error allocating key layout map.");

    61             status = NO_MEMORY;

    62         } else {

    63 #if DEBUG_PARSER_PERFORMANCE

    64             nsecs_t startTime = systemTime(SYSTEM_TIME_MONOTONIC);

    65 #endif

    66             Parser parser(map.get(), tokenizer);

    67             status = parser.parse();

    68 #if DEBUG_PARSER_PERFORMANCE

    69             nsecs_t elapsedTime = systemTime(SYSTEM_TIME_MONOTONIC) - startTime;

    70             ALOGD("Parsed key layout map file '%s' %d lines in %0.3fms.",

    71                     tokenizer->getFilename().string(), tokenizer->getLineNumber(),

    72                     elapsedTime / 1000000.0);

    73 #endif

    74             if (!status) {

    75                 *outMap = map;

    76             }

    77         }

    78         delete tokenizer;

    79     }

    80     return status;

    81 }

    83 status_t KeyLayoutMap::mapKey(int32_t scanCode, int32_t usageCode,

    84         int32_t* outKeyCode, uint32_t* outFlags) const {

    85     const Key* key = getKey(scanCode, usageCode);

    86     if (!key) {

    87 #if DEBUG_MAPPING

    88         ALOGD("mapKey: scanCode=%d, usageCode=0x%08x ~ Failed.", scanCode, usageCode);

    89 #endif

    90         *outKeyCode = AKEYCODE_UNKNOWN;

    91         *outFlags = 0;

    92         return NAME_NOT_FOUND;

    93     }

    95     *outKeyCode = key->keyCode;

    96     *outFlags = key->flags;

    98 #if DEBUG_MAPPING

    99     ALOGD("mapKey: scanCode=%d, usageCode=0x%08x ~ Result keyCode=%d, outFlags=0x%08x.",

   100             scanCode, usageCode, *outKeyCode, *outFlags);

   101 #endif

   102     return NO_ERROR;

   103 }

   105 const KeyLayoutMap::Key* KeyLayoutMap::getKey(int32_t scanCode, int32_t usageCode) const {

   106     if (usageCode) {

   107         ssize_t index = mKeysByUsageCode.indexOfKey(usageCode);

   108         if (index >= 0) {

   109             return &mKeysByUsageCode.valueAt(index);

   110         }

   111     }

   112     if (scanCode) {

   113         ssize_t index = mKeysByScanCode.indexOfKey(scanCode);

   114         if (index >= 0) {

   115             return &mKeysByScanCode.valueAt(index);

   116         }

   117     }

   118     return NULL;

   119 }

   121 status_t KeyLayoutMap::findScanCodesForKey(int32_t keyCode, Vector<int32_t>* outScanCodes) const {

   122     const size_t N = mKeysByScanCode.size();

   123     for (size_t i=0; i<N; i++) {

   124         if (mKeysByScanCode.valueAt(i).keyCode == keyCode) {

   125             outScanCodes->add(mKeysByScanCode.keyAt(i));

   126         }

   127     }

   128     return NO_ERROR;

   129 }

   131 status_t KeyLayoutMap::mapAxis(int32_t scanCode, AxisInfo* outAxisInfo) const {

   132     ssize_t index = mAxes.indexOfKey(scanCode);

   133     if (index < 0) {

   134 #if DEBUG_MAPPING

   135         ALOGD("mapAxis: scanCode=%d ~ Failed.", scanCode);

   136 #endif

   137         return NAME_NOT_FOUND;

   138     }

   140     *outAxisInfo = mAxes.valueAt(index);

   142 #if DEBUG_MAPPING

   143     ALOGD("mapAxis: scanCode=%d ~ Result mode=%d, axis=%d, highAxis=%d, "

   144             "splitValue=%d, flatOverride=%d.",

   145             scanCode,

   146             outAxisInfo->mode, outAxisInfo->axis, outAxisInfo->highAxis,

   147             outAxisInfo->splitValue, outAxisInfo->flatOverride);

   148 #endif

   149     return NO_ERROR;

   150 }

   153 // --- KeyLayoutMap::Parser ---

   155 KeyLayoutMap::Parser::Parser(KeyLayoutMap* map, Tokenizer* tokenizer) :

   156         mMap(map), mTokenizer(tokenizer) {

   157 }

   159 KeyLayoutMap::Parser::~Parser() {

   160 }

   162 status_t KeyLayoutMap::Parser::parse() {

   163     while (!mTokenizer->isEof()) {

   164 #if DEBUG_PARSER

   165         ALOGD("Parsing %s: '%s'.", mTokenizer->getLocation().string(),

   166                 mTokenizer->peekRemainderOfLine().string());

   167 #endif

   169         mTokenizer->skipDelimiters(WHITESPACE);

   171         if (!mTokenizer->isEol() && mTokenizer->peekChar() != '#') {

   172             String8 keywordToken = mTokenizer->nextToken(WHITESPACE);

   173             if (keywordToken == "key") {

   174                 mTokenizer->skipDelimiters(WHITESPACE);

   175                 status_t status = parseKey();

   176                 if (status) return status;

   177             } else if (keywordToken == "axis") {

   178                 mTokenizer->skipDelimiters(WHITESPACE);

   179                 status_t status = parseAxis();

   180                 if (status) return status;

   181             } else {

   182                 ALOGE("%s: Expected keyword, got '%s'.", mTokenizer->getLocation().string(),

   183                         keywordToken.string());

   184                 return BAD_VALUE;

   185             }

   187             mTokenizer->skipDelimiters(WHITESPACE);

   188             if (!mTokenizer->isEol() && mTokenizer->peekChar() != '#') {

   189                 ALOGE("%s: Expected end of line or trailing comment, got '%s'.",

   190                         mTokenizer->getLocation().string(),

   191                         mTokenizer->peekRemainderOfLine().string());

   192                 return BAD_VALUE;

   193             }

   194         }

   196         mTokenizer->nextLine();

   197     }

   198     return NO_ERROR;

   199 }

   201 status_t KeyLayoutMap::Parser::parseKey() {

   202     String8 codeToken = mTokenizer->nextToken(WHITESPACE);

   203     bool mapUsage = false;

   204     if (codeToken == "usage") {

   205         mapUsage = true;

   206         mTokenizer->skipDelimiters(WHITESPACE);

   207         codeToken = mTokenizer->nextToken(WHITESPACE);

   208     }

   210     char* end;

   211     int32_t code = int32_t(strtol(codeToken.string(), &end, 0));

   212     if (*end) {

   213         ALOGE("%s: Expected key %s number, got '%s'.", mTokenizer->getLocation().string(),

   214                 mapUsage ? "usage" : "scan code", codeToken.string());

   215         return BAD_VALUE;

   216     }

   217     KeyedVector<int32_t, Key>& map =

   218             mapUsage ? mMap->mKeysByUsageCode : mMap->mKeysByScanCode;

   219     if (map.indexOfKey(code) >= 0) {

   220         ALOGE("%s: Duplicate entry for key %s '%s'.", mTokenizer->getLocation().string(),

   221                 mapUsage ? "usage" : "scan code", codeToken.string());

   222         return BAD_VALUE;

   223     }

   225     mTokenizer->skipDelimiters(WHITESPACE);

   226     String8 keyCodeToken = mTokenizer->nextToken(WHITESPACE);

   227     int32_t keyCode = getKeyCodeByLabel(keyCodeToken.string());

   228     if (!keyCode) {

   229         ALOGE("%s: Expected key code label, got '%s'.", mTokenizer->getLocation().string(),

   230                 keyCodeToken.string());

   231         return BAD_VALUE;

   232     }

   234     uint32_t flags = 0;

   235     for (;;) {

   236         mTokenizer->skipDelimiters(WHITESPACE);

   237         if (mTokenizer->isEol() || mTokenizer->peekChar() == '#') break;

   239         String8 flagToken = mTokenizer->nextToken(WHITESPACE);

   240         uint32_t flag = getKeyFlagByLabel(flagToken.string());

   241         if (!flag) {

   242             ALOGE("%s: Expected key flag label, got '%s'.", mTokenizer->getLocation().string(),

   243                     flagToken.string());

   244             return BAD_VALUE;

   245         }

   246         if (flags & flag) {

   247             ALOGE("%s: Duplicate key flag '%s'.", mTokenizer->getLocation().string(),

   248                     flagToken.string());

   249             return BAD_VALUE;

   250         }

   251         flags |= flag;

   252     }

   254 #if DEBUG_PARSER

   255     ALOGD("Parsed key %s: code=%d, keyCode=%d, flags=0x%08x.",

   256             mapUsage ? "usage" : "scan code", code, keyCode, flags);

   257 #endif

   258     Key key;

   259     key.keyCode = keyCode;

   260     key.flags = flags;

   261     map.add(code, key);

   262     return NO_ERROR;

   263 }

   265 status_t KeyLayoutMap::Parser::parseAxis() {

   266     String8 scanCodeToken = mTokenizer->nextToken(WHITESPACE);

   267     char* end;

   268     int32_t scanCode = int32_t(strtol(scanCodeToken.string(), &end, 0));

   269     if (*end) {

   270         ALOGE("%s: Expected axis scan code number, got '%s'.", mTokenizer->getLocation().string(),

   271                 scanCodeToken.string());

   272         return BAD_VALUE;

   273     }

   274     if (mMap->mAxes.indexOfKey(scanCode) >= 0) {

   275         ALOGE("%s: Duplicate entry for axis scan code '%s'.", mTokenizer->getLocation().string(),

   276                 scanCodeToken.string());

   277         return BAD_VALUE;

   278     }

   280     AxisInfo axisInfo;

   282     mTokenizer->skipDelimiters(WHITESPACE);

   283     String8 token = mTokenizer->nextToken(WHITESPACE);

   284     if (token == "invert") {

   285         axisInfo.mode = AxisInfo::MODE_INVERT;

   287         mTokenizer->skipDelimiters(WHITESPACE);

   288         String8 axisToken = mTokenizer->nextToken(WHITESPACE);

   289         axisInfo.axis = getAxisByLabel(axisToken.string());

   290         if (axisInfo.axis < 0) {

   291             ALOGE("%s: Expected inverted axis label, got '%s'.",

   292                     mTokenizer->getLocation().string(), axisToken.string());

   293             return BAD_VALUE;

   294         }

   295     } else if (token == "split") {

   296         axisInfo.mode = AxisInfo::MODE_SPLIT;

   298         mTokenizer->skipDelimiters(WHITESPACE);

   299         String8 splitToken = mTokenizer->nextToken(WHITESPACE);

   300         axisInfo.splitValue = int32_t(strtol(splitToken.string(), &end, 0));

   301         if (*end) {

   302             ALOGE("%s: Expected split value, got '%s'.",

   303                     mTokenizer->getLocation().string(), splitToken.string());

   304             return BAD_VALUE;

   305         }

   307         mTokenizer->skipDelimiters(WHITESPACE);

   308         String8 lowAxisToken = mTokenizer->nextToken(WHITESPACE);

   309         axisInfo.axis = getAxisByLabel(lowAxisToken.string());

   310         if (axisInfo.axis < 0) {

   311             ALOGE("%s: Expected low axis label, got '%s'.",

   312                     mTokenizer->getLocation().string(), lowAxisToken.string());

   313             return BAD_VALUE;

   314         }

   316         mTokenizer->skipDelimiters(WHITESPACE);

   317         String8 highAxisToken = mTokenizer->nextToken(WHITESPACE);

   318         axisInfo.highAxis = getAxisByLabel(highAxisToken.string());

   319         if (axisInfo.highAxis < 0) {

   320             ALOGE("%s: Expected high axis label, got '%s'.",

   321                     mTokenizer->getLocation().string(), highAxisToken.string());

   322             return BAD_VALUE;

   323         }

   324     } else {

   325         axisInfo.axis = getAxisByLabel(token.string());

   326         if (axisInfo.axis < 0) {

   327             ALOGE("%s: Expected axis label, 'split' or 'invert', got '%s'.",

   328                     mTokenizer->getLocation().string(), token.string());

   329             return BAD_VALUE;

   330         }

   331     }

   333     for (;;) {

   334         mTokenizer->skipDelimiters(WHITESPACE);

   335         if (mTokenizer->isEol() || mTokenizer->peekChar() == '#') {

   336             break;

   337         }

   338         String8 keywordToken = mTokenizer->nextToken(WHITESPACE);

   339         if (keywordToken == "flat") {

   340             mTokenizer->skipDelimiters(WHITESPACE);

   341             String8 flatToken = mTokenizer->nextToken(WHITESPACE);

   342             axisInfo.flatOverride = int32_t(strtol(flatToken.string(), &end, 0));

   343             if (*end) {

   344                 ALOGE("%s: Expected flat value, got '%s'.",

   345                         mTokenizer->getLocation().string(), flatToken.string());

   346                 return BAD_VALUE;

   347             }

   348         } else {

   349             ALOGE("%s: Expected keyword 'flat', got '%s'.",

   350                     mTokenizer->getLocation().string(), keywordToken.string());

   351             return BAD_VALUE;

   352         }

   353     }

   355 #if DEBUG_PARSER

   356     ALOGD("Parsed axis: scanCode=%d, mode=%d, axis=%d, highAxis=%d, "

   357             "splitValue=%d, flatOverride=%d.",

   358             scanCode,

   359             axisInfo.mode, axisInfo.axis, axisInfo.highAxis,

   360             axisInfo.splitValue, axisInfo.flatOverride);

   361 #endif

   362     mMap->mAxes.add(scanCode, axisInfo);

   363     return NO_ERROR;

   364 }

   366 };

The Tor Browser / file revision

widget/gonk/libui/KeyLayoutMap.cpp@fc2d59ddac77

widget/gonk/libui/KeyLayoutMap.cpp