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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 QtGui module of the Qt Toolkit. |
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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 #ifndef QFONT_P_H |
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43 #define QFONT_P_H |
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44 |
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45 // |
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46 // W A R N I N G |
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47 // ------------- |
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48 // |
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49 // This file is not part of the Qt API. It exists for the convenience |
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50 // of internal files. This header file may change from version to version |
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51 // without notice, or even be removed. |
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52 // |
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53 // We mean it. |
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54 // |
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55 |
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56 #include "QtGui/qfont.h" |
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57 #include "QtCore/qmap.h" |
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58 #include "QtCore/qobject.h" |
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59 #include <private/qunicodetables_p.h> |
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60 #include <QtGui/qfontdatabase.h> |
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61 #include "private/qfixed_p.h" |
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62 |
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63 QT_BEGIN_NAMESPACE |
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64 |
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65 // forwards |
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66 class QFontCache; |
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67 class QFontEngine; |
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68 |
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69 struct QFontDef |
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70 { |
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71 inline QFontDef() |
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72 : pointSize(-1.0), pixelSize(-1), |
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73 styleStrategy(QFont::PreferDefault), styleHint(QFont::AnyStyle), |
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74 weight(50), fixedPitch(false), style(QFont::StyleNormal), stretch(100), |
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75 ignorePitch(true) |
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76 #ifdef Q_WS_MAC |
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77 ,fixedPitchComputed(false) |
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78 #endif |
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79 { |
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80 } |
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81 |
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82 QString family; |
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83 |
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84 #ifdef Q_WS_X11 |
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85 QString addStyle; |
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86 #endif // Q_WS_X11 |
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87 |
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88 qreal pointSize; |
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89 int pixelSize; |
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90 |
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91 uint styleStrategy : 16; |
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92 uint styleHint : 8; |
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93 |
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94 uint weight : 7; // 0-99 |
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95 uint fixedPitch : 1; |
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96 uint style : 2; |
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97 uint stretch : 12; // 0-400 |
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98 |
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99 uint ignorePitch : 1; |
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100 uint fixedPitchComputed : 1; // for Mac OS X only |
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101 int reserved : 16; // for future extensions |
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102 |
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103 bool exactMatch(const QFontDef &other) const; |
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104 bool operator==(const QFontDef &other) const |
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105 { |
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106 return pixelSize == other.pixelSize |
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107 && weight == other.weight |
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108 && style == other.style |
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109 && stretch == other.stretch |
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110 && styleHint == other.styleHint |
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111 && styleStrategy == other.styleStrategy |
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112 && ignorePitch == other.ignorePitch && fixedPitch == other.fixedPitch |
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113 && family == other.family |
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114 #ifdef Q_WS_X11 |
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115 && addStyle == other.addStyle |
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116 #endif |
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117 ; |
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118 } |
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119 inline bool operator<(const QFontDef &other) const |
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120 { |
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121 if (pixelSize != other.pixelSize) return pixelSize < other.pixelSize; |
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122 if (weight != other.weight) return weight < other.weight; |
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123 if (style != other.style) return style < other.style; |
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124 if (stretch != other.stretch) return stretch < other.stretch; |
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125 if (styleHint != other.styleHint) return styleHint < other.styleHint; |
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126 if (styleStrategy != other.styleStrategy) return styleStrategy < other.styleStrategy; |
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127 if (family != other.family) return family < other.family; |
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128 |
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129 #ifdef Q_WS_X11 |
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130 if (addStyle != other.addStyle) return addStyle < other.addStyle; |
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131 #endif // Q_WS_X11 |
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132 |
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133 if (ignorePitch != other.ignorePitch) return ignorePitch < other.ignorePitch; |
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134 if (fixedPitch != other.fixedPitch) return fixedPitch < other.fixedPitch; |
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135 return false; |
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136 } |
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137 }; |
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138 |
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139 class QFontEngineData |
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140 { |
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141 public: |
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142 QFontEngineData(); |
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143 ~QFontEngineData(); |
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144 |
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145 QAtomicInt ref; |
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146 QFontCache *fontCache; |
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147 |
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148 #if !defined(Q_WS_MAC) |
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149 QFontEngine *engines[QUnicodeTables::ScriptCount]; |
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150 #else |
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151 QFontEngine *engine; |
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152 #endif |
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153 }; |
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154 |
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155 |
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156 class Q_GUI_EXPORT QFontPrivate |
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157 { |
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158 public: |
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159 #ifdef Q_WS_X11 |
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160 static int defaultEncodingID; |
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161 #endif // Q_WS_X11 |
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162 |
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163 QFontPrivate(); |
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164 QFontPrivate(const QFontPrivate &other); |
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165 ~QFontPrivate(); |
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166 |
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167 QFontEngine *engineForScript(int script) const; |
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168 void alterCharForCapitalization(QChar &c) const; |
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169 |
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170 QAtomicInt ref; |
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171 QFontDef request; |
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172 mutable QFontEngineData *engineData; |
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173 int dpi; |
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174 int screen; |
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175 |
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176 #ifdef Q_WS_WIN |
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177 HDC hdc; |
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178 #endif |
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179 |
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180 uint rawMode : 1; |
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181 uint underline : 1; |
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182 uint overline : 1; |
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183 uint strikeOut : 1; |
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184 uint kerning : 1; |
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185 uint capital : 3; |
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186 bool letterSpacingIsAbsolute : 1; |
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187 |
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188 QFixed letterSpacing; |
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189 QFixed wordSpacing; |
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190 |
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191 mutable QFontPrivate *scFont; |
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192 QFont smallCapsFont() const { return QFont(smallCapsFontPrivate()); } |
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193 QFontPrivate *smallCapsFontPrivate() const; |
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194 |
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195 void resolve(uint mask, const QFontPrivate *other); |
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196 private: |
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197 QFontPrivate &operator=(const QFontPrivate &) { return *this; } |
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198 }; |
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199 |
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200 |
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201 class QFontCache : public QObject |
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202 { |
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203 Q_OBJECT |
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204 public: |
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205 // note: these static functions work on a per-thread basis |
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206 static QFontCache *instance(); |
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207 static void cleanup(); |
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208 |
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209 QFontCache(); |
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210 ~QFontCache(); |
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211 |
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212 void clear(); |
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213 #if defined(Q_WS_QWS) && !defined(QT_NO_QWS_QPF2) |
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214 void removeEngineForFont(const QByteArray &fontName); |
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215 #endif |
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216 // universal key structure. QFontEngineDatas and QFontEngines are cached using |
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217 // the same keys |
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218 struct Key { |
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219 Key() : script(0), screen(0) { } |
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220 Key(const QFontDef &d, int c, int s = 0) |
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221 : def(d), script(c), screen(s) { } |
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222 |
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223 QFontDef def; |
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224 int script; |
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225 int screen; |
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226 |
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227 inline bool operator<(const Key &other) const |
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228 { |
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229 if (script != other.script) return script < other.script; |
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230 if (screen != other.screen) return screen < other.screen; |
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231 return def < other.def; |
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232 } |
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233 inline bool operator==(const Key &other) const |
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234 { return def == other.def && script == other.script && screen == other.screen; } |
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235 }; |
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236 |
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237 // QFontEngineData cache |
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238 typedef QMap<Key,QFontEngineData*> EngineDataCache; |
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239 EngineDataCache engineDataCache; |
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240 |
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241 QFontEngineData *findEngineData(const Key &key) const; |
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242 void insertEngineData(const Key &key, QFontEngineData *engineData); |
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243 |
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244 // QFontEngine cache |
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245 struct Engine { |
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246 Engine() : data(0), timestamp(0), hits(0) { } |
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247 Engine(QFontEngine *d) : data(d), timestamp(0), hits(0) { } |
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248 |
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249 QFontEngine *data; |
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250 uint timestamp; |
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251 uint hits; |
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252 }; |
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253 |
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254 typedef QMap<Key,Engine> EngineCache; |
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255 EngineCache engineCache; |
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256 |
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257 QFontEngine *findEngine(const Key &key); |
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258 void insertEngine(const Key &key, QFontEngine *engine); |
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259 |
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260 #if defined(Q_WS_WIN) || defined(Q_WS_QWS) |
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261 void cleanupPrinterFonts(); |
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262 #endif |
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263 |
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264 private: |
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265 void increaseCost(uint cost); |
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266 void decreaseCost(uint cost); |
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267 void timerEvent(QTimerEvent *event); |
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268 |
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269 static const uint min_cost; |
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270 uint total_cost, max_cost; |
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271 uint current_timestamp; |
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272 bool fast; |
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273 int timer_id; |
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274 }; |
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275 |
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276 QT_END_NAMESPACE |
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277 |
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278 #endif // QFONT_P_H |