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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 QREGION_H |
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43 #define QREGION_H |
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44 |
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45 #include <QtCore/qatomic.h> |
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46 #include <QtCore/qrect.h> |
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47 #include <QtGui/qwindowdefs.h> |
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48 |
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49 #ifndef QT_NO_DATASTREAM |
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50 #include <QtCore/qdatastream.h> |
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51 #endif |
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52 |
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53 QT_BEGIN_HEADER |
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54 |
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55 QT_BEGIN_NAMESPACE |
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56 |
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57 QT_MODULE(Gui) |
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58 |
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59 template <class T> class QVector; |
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60 class QVariant; |
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61 |
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62 #if defined(Q_WS_QWS) || defined(Q_WS_X11) || defined(Q_WS_MAC) || defined(Q_WS_WIN) || defined(Q_OS_SYMBIAN) |
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63 struct QRegionPrivate; |
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64 #endif |
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65 |
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66 class QBitmap; |
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67 |
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68 class Q_GUI_EXPORT QRegion |
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69 { |
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70 public: |
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71 enum RegionType { Rectangle, Ellipse }; |
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72 |
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73 QRegion(); |
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74 QRegion(int x, int y, int w, int h, RegionType t = Rectangle); |
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75 QRegion(const QRect &r, RegionType t = Rectangle); |
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76 QRegion(const QPolygon &pa, Qt::FillRule fillRule = Qt::OddEvenFill); |
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77 #ifdef QT3_SUPPORT |
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78 QT3_SUPPORT_CONSTRUCTOR QRegion(const QPolygon &pa, bool winding); |
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79 #endif |
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80 QRegion(const QRegion ®ion); |
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81 QRegion(const QBitmap &bitmap); |
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82 ~QRegion(); |
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83 QRegion &operator=(const QRegion &); |
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84 |
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85 #ifdef QT3_SUPPORT |
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86 inline QT3_SUPPORT bool isNull() const { return isEmpty(); } |
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87 #endif |
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88 bool isEmpty() const; |
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89 |
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90 bool contains(const QPoint &p) const; |
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91 bool contains(const QRect &r) const; |
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92 |
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93 void translate(int dx, int dy); |
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94 inline void translate(const QPoint &p) { translate(p.x(), p.y()); } |
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95 QRegion translated(int dx, int dy) const; |
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96 inline QRegion translated(const QPoint &p) const { return translated(p.x(), p.y()); } |
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97 |
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98 // ### Qt 5: make these four functions QT4_SUPPORT |
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99 QRegion unite(const QRegion &r) const; |
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100 QRegion unite(const QRect &r) const; |
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101 QRegion intersect(const QRegion &r) const; |
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102 QRegion intersect(const QRect &r) const; |
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103 QRegion subtract(const QRegion &r) const; |
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104 QRegion eor(const QRegion &r) const; |
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105 |
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106 inline QRegion united(const QRegion &r) const { return unite(r); } |
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107 inline QRegion united(const QRect &r) const { return unite(r); } |
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108 inline QRegion intersected(const QRegion &r) const { return intersect(r); } |
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109 inline QRegion intersected(const QRect &r) const { return intersect(r); } |
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110 inline QRegion subtracted(const QRegion &r) const { return subtract(r); } |
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111 inline QRegion xored(const QRegion &r) const { return eor(r); } |
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112 |
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113 bool intersects(const QRegion &r) const; |
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114 bool intersects(const QRect &r) const; |
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115 |
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116 QRect boundingRect() const; |
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117 QVector<QRect> rects() const; |
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118 void setRects(const QRect *rect, int num); |
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119 int numRects() const; |
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120 |
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121 const QRegion operator|(const QRegion &r) const; |
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122 const QRegion operator+(const QRegion &r) const; |
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123 const QRegion operator+(const QRect &r) const; |
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124 const QRegion operator&(const QRegion &r) const; |
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125 const QRegion operator&(const QRect &r) const; |
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126 const QRegion operator-(const QRegion &r) const; |
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127 const QRegion operator^(const QRegion &r) const; |
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128 QRegion& operator|=(const QRegion &r); |
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129 QRegion& operator+=(const QRegion &r); |
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130 QRegion& operator+=(const QRect &r); |
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131 QRegion& operator&=(const QRegion &r); |
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132 QRegion& operator&=(const QRect &r); |
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133 QRegion& operator-=(const QRegion &r); |
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134 QRegion& operator^=(const QRegion &r); |
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135 |
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136 bool operator==(const QRegion &r) const; |
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137 inline bool operator!=(const QRegion &r) const { return !(operator==(r)); } |
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138 operator QVariant() const; |
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139 |
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140 #ifdef qdoc |
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141 Handle handle() const; |
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142 #endif |
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143 #ifndef qdoc |
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144 #if defined(Q_WS_WIN) |
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145 inline HRGN handle() const { ensureHandle(); return d->rgn; } |
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146 #elif defined(Q_WS_X11) |
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147 inline Region handle() const { if(!d->rgn) updateX11Region(); return d->rgn; } |
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148 #elif defined(Q_WS_MAC) |
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149 #if defined Q_WS_MAC32 |
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150 RgnHandle toQDRgn() const; |
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151 RgnHandle toQDRgnForUpdate_sys() const; |
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152 static QRegion fromQDRgn(RgnHandle shape); |
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153 #endif |
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154 #ifdef QT_MAC_USE_COCOA |
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155 inline HIMutableShapeRef handle(bool unused = false) const |
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156 { Q_UNUSED(unused); return toHIMutableShape(); } |
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157 #else |
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158 inline RgnHandle handle() const { return handle(false); } |
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159 inline RgnHandle handle(bool) const { return toQDRgn(); } |
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160 #endif |
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161 HIMutableShapeRef toHIMutableShape() const; |
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162 static QRegion fromHIShapeRef(HIShapeRef shape); |
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163 #elif defined(Q_WS_QWS) |
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164 inline void *handle() const { return d->qt_rgn; } |
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165 #endif |
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166 #endif |
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167 |
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168 #ifndef QT_NO_DATASTREAM |
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169 friend Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QRegion &); |
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170 friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QRegion &); |
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171 #endif |
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172 private: |
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173 QRegion copy() const; // helper of detach. |
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174 void detach(); |
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175 #if defined(Q_WS_WIN) |
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176 void ensureHandle() const; |
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177 QRegion winCombine(const QRegion &r, int num) const; |
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178 #elif defined(Q_WS_X11) |
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179 void updateX11Region() const; |
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180 void *clipRectangles(int &num) const; |
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181 friend void *qt_getClipRects(const QRegion &r, int &num); |
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182 #elif defined(Q_WS_MAC) |
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183 static OSStatus shape2QRegionHelper(int inMessage, HIShapeRef inShape, |
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184 const CGRect *inRect, void *inRefcon); |
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185 #endif |
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186 friend bool qt_region_strictContains(const QRegion ®ion, |
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187 const QRect &rect); |
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188 friend struct QRegionPrivate; |
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189 |
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190 #ifndef QT_NO_DATASTREAM |
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191 void exec(const QByteArray &ba, int ver = 0, QDataStream::ByteOrder byteOrder = QDataStream::BigEndian); |
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192 #endif |
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193 struct QRegionData { |
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194 QBasicAtomicInt ref; |
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195 #if defined(Q_WS_WIN) |
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196 HRGN rgn; |
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197 #elif defined(Q_WS_X11) |
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198 Region rgn; |
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199 void *xrectangles; |
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200 #elif defined(Q_WS_MAC) && !defined(QT_MAC_USE_COCOA) |
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201 mutable RgnHandle unused; // Here for binary compatability reasons. ### Qt 5 remove. |
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202 #endif |
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203 #if defined(Q_WS_QWS) || defined(Q_WS_X11) || defined(Q_WS_MAC) || defined(Q_WS_WIN) || defined(Q_OS_SYMBIAN) |
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204 QRegionPrivate *qt_rgn; |
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205 #endif |
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206 }; |
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207 #if defined(Q_WS_WIN) |
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208 friend class QETWidget; |
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209 #endif |
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210 struct QRegionData *d; |
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211 static struct QRegionData shared_empty; |
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212 static void cleanUp(QRegionData *x); |
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213 }; |
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214 |
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215 /***************************************************************************** |
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216 QRegion stream functions |
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217 *****************************************************************************/ |
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218 |
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219 #ifndef QT_NO_DATASTREAM |
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220 Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QRegion &); |
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221 Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QRegion &); |
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222 #endif |
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223 |
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224 #ifndef QT_NO_DEBUG_STREAM |
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225 Q_GUI_EXPORT QDebug operator<<(QDebug, const QRegion &); |
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226 #endif |
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227 |
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228 QT_END_NAMESPACE |
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229 |
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230 QT_END_HEADER |
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231 |
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232 #endif // QREGION_H |