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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the Qt Mobility Components. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include "qmetadatacontrolmetaobject_p.h" |
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43 #include <qmetadatareadercontrol.h> |
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44 |
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45 |
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46 QT_BEGIN_NAMESPACE |
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47 |
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48 // copied from qmetaobject.cpp |
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49 // do not touch without touching the moc as well |
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50 enum PropertyFlags { |
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51 Invalid = 0x00000000, |
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52 Readable = 0x00000001, |
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53 Writable = 0x00000002, |
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54 Resettable = 0x00000004, |
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55 EnumOrFlag = 0x00000008, |
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56 StdCppSet = 0x00000100, |
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57 // Override = 0x00000200, |
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58 Designable = 0x00001000, |
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59 ResolveDesignable = 0x00002000, |
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60 Scriptable = 0x00004000, |
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61 ResolveScriptable = 0x00008000, |
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62 Stored = 0x00010000, |
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63 ResolveStored = 0x00020000, |
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64 Editable = 0x00040000, |
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65 ResolveEditable = 0x00080000, |
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66 User = 0x00100000, |
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67 ResolveUser = 0x00200000, |
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68 Notify = 0x00400000, |
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69 Dynamic = 0x00800000 |
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70 }; |
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71 |
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72 enum MethodFlags { |
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73 AccessPrivate = 0x00, |
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74 AccessProtected = 0x01, |
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75 AccessPublic = 0x02, |
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76 AccessMask = 0x03, //mask |
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77 |
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78 MethodMethod = 0x00, |
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79 MethodSignal = 0x04, |
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80 MethodSlot = 0x08, |
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81 MethodConstructor = 0x0c, |
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82 MethodTypeMask = 0x0c, |
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83 |
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84 MethodCompatibility = 0x10, |
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85 MethodCloned = 0x20, |
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86 MethodScriptable = 0x40 |
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87 }; |
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88 |
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89 struct QMetaObjectPrivate |
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90 { |
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91 int revision; |
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92 int className; |
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93 int classInfoCount, classInfoData; |
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94 int methodCount, methodData; |
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95 int propertyCount, propertyData; |
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96 int enumeratorCount, enumeratorData; |
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97 int constructorCount, constructorData; |
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98 int flags; |
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99 }; |
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100 |
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101 static inline const QMetaObjectPrivate *priv(const uint* m_data) |
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102 { return reinterpret_cast<const QMetaObjectPrivate*>(m_data); } |
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103 // end of copied lines from qmetaobject.cpp |
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104 |
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105 namespace |
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106 { |
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107 struct MetaDataKey |
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108 { |
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109 QtMultimedia::MetaData key; |
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110 const char *name; |
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111 }; |
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112 |
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113 const MetaDataKey qt_metaDataKeys[] = |
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114 { |
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115 { QtMultimedia::Title, "title" }, |
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116 { QtMultimedia::SubTitle, "subTitle" }, |
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117 { QtMultimedia::Author, "author" }, |
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118 { QtMultimedia::Comment, "comment" }, |
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119 { QtMultimedia::Description, "description" }, |
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120 { QtMultimedia::Category, "category" }, |
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121 { QtMultimedia::Genre, "genre" }, |
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122 { QtMultimedia::Year, "year" }, |
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123 { QtMultimedia::Date, "date" }, |
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124 { QtMultimedia::UserRating, "userRating" }, |
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125 { QtMultimedia::Keywords, "keywords" }, |
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126 { QtMultimedia::Language, "language" }, |
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127 { QtMultimedia::Publisher, "publisher" }, |
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128 { QtMultimedia::Copyright, "copyright" }, |
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129 { QtMultimedia::ParentalRating, "parentalRating" }, |
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130 { QtMultimedia::RatingOrganisation, "ratingOrganisation" }, |
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131 |
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132 // Media |
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133 { QtMultimedia::Size, "size" }, |
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134 { QtMultimedia::MediaType, "mediaType" }, |
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135 // { QtMultimedia::Duration, "duration" }, |
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136 |
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137 // Audio |
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138 { QtMultimedia::AudioBitRate, "audioBitRate" }, |
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139 { QtMultimedia::AudioCodec, "audioCodec" }, |
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140 { QtMultimedia::AverageLevel, "averageLevel" }, |
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141 { QtMultimedia::ChannelCount, "channelCount" }, |
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142 { QtMultimedia::PeakValue, "peakValue" }, |
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143 { QtMultimedia::SampleRate, "sampleRate" }, |
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144 |
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145 // Music |
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146 { QtMultimedia::AlbumTitle, "albumTitle" }, |
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147 { QtMultimedia::AlbumArtist, "albumArtist" }, |
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148 { QtMultimedia::ContributingArtist, "contributingArtist" }, |
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149 { QtMultimedia::Composer, "composer" }, |
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150 { QtMultimedia::Conductor, "conductor" }, |
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151 { QtMultimedia::Lyrics, "lyrics" }, |
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152 { QtMultimedia::Mood, "mood" }, |
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153 { QtMultimedia::TrackNumber, "trackNumber" }, |
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154 { QtMultimedia::TrackCount, "trackCount" }, |
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155 |
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156 { QtMultimedia::CoverArtUrlSmall, "coverArtUrlSmall" }, |
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157 { QtMultimedia::CoverArtUrlLarge, "coverArtUrlLarge" }, |
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158 |
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159 // Image/Video |
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160 { QtMultimedia::Resolution, "resolution" }, |
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161 { QtMultimedia::PixelAspectRatio, "pixelAspectRatio" }, |
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162 |
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163 // Video |
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164 { QtMultimedia::VideoFrameRate, "videoFrameRate" }, |
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165 { QtMultimedia::VideoBitRate, "videoBitRate" }, |
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166 { QtMultimedia::VideoCodec, "videoCodec" }, |
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167 |
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168 { QtMultimedia::PosterUrl, "posterUrl" }, |
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169 |
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170 // Movie |
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171 { QtMultimedia::ChapterNumber, "chapterNumber" }, |
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172 { QtMultimedia::Director, "director" }, |
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173 { QtMultimedia::LeadPerformer, "leadPerformer" }, |
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174 { QtMultimedia::Writer, "writer" }, |
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175 |
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176 // Photos |
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177 { QtMultimedia::CameraManufacturer, "cameraManufacturer" }, |
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178 { QtMultimedia::CameraModel, "cameraModel" }, |
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179 { QtMultimedia::Event, "event" }, |
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180 { QtMultimedia::Subject, "subject" }, |
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181 { QtMultimedia::Orientation, "orientation" }, |
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182 { QtMultimedia::ExposureTime, "exposureTime" }, |
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183 { QtMultimedia::FNumber, "fNumber" }, |
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184 { QtMultimedia::ExposureProgram, "exposureProgram" }, |
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185 { QtMultimedia::ISOSpeedRatings, "isoSpeedRatings" }, |
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186 { QtMultimedia::ExposureBiasValue, "exposureBiasValue" }, |
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187 { QtMultimedia::DateTimeOriginal, "dateTimeOriginal" }, |
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188 { QtMultimedia::DateTimeDigitized, "dateTimeDigitized" }, |
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189 { QtMultimedia::SubjectDistance, "subjectDistance" }, |
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190 { QtMultimedia::MeteringMode, "meteringMode" }, |
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191 { QtMultimedia::LightSource, "lightSource" }, |
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192 { QtMultimedia::Flash, "flash" }, |
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193 { QtMultimedia::FocalLength, "focalLength" }, |
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194 { QtMultimedia::ExposureMode, "exposureMode" }, |
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195 { QtMultimedia::WhiteBalance, "whiteBalance" }, |
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196 { QtMultimedia::DigitalZoomRatio, "digitalZoomRatio" }, |
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197 { QtMultimedia::FocalLengthIn35mmFilm, "focalLengthIn35mmFilm" }, |
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198 { QtMultimedia::SceneCaptureType, "sceneCaptureType" }, |
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199 { QtMultimedia::GainControl, "gainControl" }, |
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200 { QtMultimedia::Contrast, "contrast" }, |
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201 { QtMultimedia::Saturation, "saturation" }, |
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202 { QtMultimedia::Sharpness, "sharpness" }, |
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203 { QtMultimedia::DeviceSettingDescription, "deviceSettingDescription" } |
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204 }; |
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205 |
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206 class QMetaDataControlObject : public QObject |
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207 { |
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208 public: |
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209 inline QObjectData *data() { return d_ptr.data(); } |
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210 }; |
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211 } |
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212 |
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213 QMetaDataControlMetaObject::QMetaDataControlMetaObject(QMetaDataReaderControl *control, QObject *object) |
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214 : m_control(control) |
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215 , m_object(object) |
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216 , m_string(0) |
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217 , m_data(0) |
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218 , m_propertyOffset(0) |
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219 , m_signalOffset(0) |
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220 { |
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221 const QMetaObject *superClass = m_object->metaObject(); |
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222 |
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223 const int propertyCount = sizeof(qt_metaDataKeys) / sizeof(MetaDataKey); |
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224 const int dataSize = sizeof(uint) |
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225 * (13 // QMetaObjectPrivate members. |
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226 + 5 // 5 members per signal. |
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227 + 4 * propertyCount // 3 members per property + 1 notify signal per property. |
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228 + 1); // Terminating value. |
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229 |
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230 m_data = reinterpret_cast<uint *>(qMalloc(dataSize)); |
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231 |
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232 QMetaObjectPrivate *pMeta = reinterpret_cast<QMetaObjectPrivate *>(m_data); |
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233 |
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234 pMeta->revision = 3; |
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235 pMeta->className = 0; |
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236 pMeta->classInfoCount = 0; |
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237 pMeta->classInfoData = 0; |
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238 pMeta->methodCount = 1; |
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239 pMeta->methodData = 13; |
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240 pMeta->propertyCount = propertyCount; |
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241 pMeta->propertyData = 18; |
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242 pMeta->enumeratorCount = 0; |
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243 pMeta->enumeratorData = 0; |
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244 pMeta->constructorCount = 0; |
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245 pMeta->constructorData = 0; |
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246 pMeta->flags = 0x01; // Dynamic meta object flag. |
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247 |
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248 const int classNameSize = qstrlen(superClass->className()) + 1; |
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249 |
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250 int stringIndex = classNameSize + 1; |
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251 |
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252 // __metaDataChanged() signal. |
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253 static const char *changeSignal = "__metaDataChanged()"; |
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254 const int changeSignalSize = qstrlen(changeSignal) + 1; |
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255 |
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256 m_data[13] = stringIndex; // Signature. |
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257 m_data[14] = classNameSize; // Parameters. |
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258 m_data[15] = classNameSize; // Type. |
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259 m_data[16] = classNameSize; // Tag. |
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260 m_data[17] = MethodSignal | AccessProtected; // Flags. |
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261 |
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262 stringIndex += changeSignalSize; |
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263 |
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264 const char *qvariantName = "QVariant"; |
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265 const int qvariantSize = qstrlen(qvariantName) + 1; |
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266 const int qvariantIndex = stringIndex; |
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267 |
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268 stringIndex += qvariantSize; |
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269 |
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270 // Properties. |
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271 for (int i = 0; i < propertyCount; ++i) { |
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272 m_data[18 + 3 * i] = stringIndex; // Name. |
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273 m_data[19 + 3 * i] = qvariantIndex; // Type. |
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274 m_data[20 + 3 * i] |
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275 = Readable | Notify | Dynamic | (0xffffffff << 24); // Flags. |
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276 m_data[18 + propertyCount * 3 + i] = 0; // Notify signal. |
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277 |
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278 stringIndex += qstrlen(qt_metaDataKeys[i].name) + 1; |
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279 } |
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280 |
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281 // Terminating value. |
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282 m_data[18 + propertyCount * 4] = 0; |
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283 |
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284 // Build string. |
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285 m_string = reinterpret_cast<char *>(qMalloc(stringIndex + 1)); |
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286 |
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287 // Class name. |
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288 qMemCopy(m_string, superClass->className(), classNameSize); |
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289 |
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290 stringIndex = classNameSize; |
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291 |
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292 // Null m_string. |
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293 m_string[stringIndex] = '\0'; |
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294 stringIndex += 1; |
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295 |
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296 // __metaDataChanged() signal. |
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297 qMemCopy(m_string + stringIndex, changeSignal, changeSignalSize); |
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298 stringIndex += changeSignalSize; |
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299 |
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300 qMemCopy(m_string + stringIndex, qvariantName, qvariantSize); |
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301 stringIndex += qvariantSize; |
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302 |
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303 // Properties. |
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304 for (int i = 0; i < propertyCount; ++i) { |
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305 const int propertyNameSize = qstrlen(qt_metaDataKeys[i].name) + 1; |
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306 |
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307 qMemCopy(m_string + stringIndex, qt_metaDataKeys[i].name, propertyNameSize); |
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308 stringIndex += propertyNameSize; |
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309 } |
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310 |
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311 // Terminating character. |
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312 m_string[stringIndex] = '\0'; |
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313 |
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314 d.superdata = superClass; |
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315 d.stringdata = m_string; |
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316 d.data = m_data; |
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317 d.extradata = 0; |
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318 |
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319 static_cast<QMetaDataControlObject *>(m_object)->data()->metaObject = this; |
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320 |
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321 m_propertyOffset = propertyOffset(); |
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322 m_signalOffset = methodOffset(); |
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323 } |
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324 |
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325 QMetaDataControlMetaObject::~QMetaDataControlMetaObject() |
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326 { |
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327 static_cast<QMetaDataControlObject *>(m_object)->data()->metaObject = 0; |
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328 |
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329 qFree(m_data); |
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330 qFree(m_string); |
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331 } |
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332 |
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333 int QMetaDataControlMetaObject::metaCall(QMetaObject::Call c, int id, void **a) |
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334 { |
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335 if (c == QMetaObject::ReadProperty && id >= m_propertyOffset) { |
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336 int propId = id - m_propertyOffset; |
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337 |
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338 *reinterpret_cast<QVariant *>(a[0]) = m_control->metaData(qt_metaDataKeys[propId].key); |
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339 |
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340 return -1; |
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341 } else { |
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342 return m_object->qt_metacall(c, id, a); |
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343 } |
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344 } |
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345 |
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346 int QMetaDataControlMetaObject::createProperty(const char *, const char *) |
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347 { |
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348 return -1; |
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349 } |
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350 |
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351 void QMetaDataControlMetaObject::metaDataChanged() |
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352 { |
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353 activate(m_object, m_signalOffset, 0); |
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354 } |
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355 |
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356 QT_END_NAMESPACE |