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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 Qt3Support 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 #include "q3frame.h" |
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43 #include "qevent.h" |
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44 #include "qpainter.h" |
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45 |
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46 QT_BEGIN_NAMESPACE |
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47 |
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48 /*! \class Q3Frame |
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49 |
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50 \compat |
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51 */ |
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52 |
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53 /*! |
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54 Creates a new frame with the given \a parent, object \a name, and |
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55 with widget flags \a f. |
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56 */ |
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57 Q3Frame::Q3Frame(QWidget* parent, const char* name, Qt::WindowFlags f) |
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58 :QFrame(parent, f), marg(0) |
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59 { |
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60 if (name) |
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61 setObjectName(QLatin1String(name)); |
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62 setAttribute(Qt::WA_LayoutOnEntireRect); |
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63 } |
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64 |
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65 /*! |
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66 Destructs the frame. |
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67 */ |
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68 Q3Frame::~Q3Frame() |
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69 { |
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70 } |
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71 |
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72 /*! |
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73 Paints the frame (or part of the frame) that's necessary, |
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74 depending on the \a event. |
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75 */ |
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76 void Q3Frame::paintEvent(QPaintEvent * event) |
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77 { |
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78 QPainter paint(this); |
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79 if (!contentsRect().contains(event->rect())) { |
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80 paint.save(); |
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81 paint.setClipRegion(event->region().intersected(frameRect())); |
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82 drawFrame(&paint); |
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83 paint.restore(); |
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84 } |
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85 if (event->rect().intersects(contentsRect())) { |
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86 paint.setClipRegion(event->region().intersected(contentsRect())); |
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87 drawContents(&paint); |
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88 } |
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89 } |
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90 |
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91 /*! |
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92 \fn void Q3Frame::drawContents(QPainter *painter) |
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93 |
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94 Virtual function that draws the contents of the frame on the given |
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95 \a painter. |
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96 |
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97 The QPainter is already open when you get it, and you must leave |
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98 it open. Painter \link QPainter::setWorldMatrix() |
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99 transformations\endlink are switched off on entry. If you |
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100 transform the painter, remember to take the frame into account and |
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101 \link QPainter::resetXForm() reset transformation\endlink before |
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102 returning. |
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103 |
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104 This function is reimplemented by subclasses that draw something |
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105 inside the frame. It should only draw inside contentsRect(). The |
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106 default function does nothing. |
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107 |
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108 \sa contentsRect(), QPainter::setClipRect() |
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109 */ |
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110 |
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111 void Q3Frame::drawContents(QPainter *) |
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112 { |
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113 } |
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114 |
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115 /*! |
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116 Draws the frame using the painter \a p and the current frame |
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117 attributes and color group. The rectangle inside the frame is not |
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118 affected. |
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119 |
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120 This function is virtual, but in general you do not need to |
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121 reimplement it. If you do, note that the QPainter is already open |
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122 and must remain open. |
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123 |
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124 \sa frameRect(), contentsRect(), drawContents(), frameStyle(), setPalette() |
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125 */ |
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126 |
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127 void Q3Frame::drawFrame(QPainter *p) |
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128 { |
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129 QFrame::drawFrame(p); |
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130 } |
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131 |
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132 /*! |
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133 \fn void Q3Frame::resizeEvent(QResizeEvent *event) |
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134 |
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135 This just calls frameChanged(); it does not make use of the \a |
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136 event itself. |
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137 */ |
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138 void Q3Frame::resizeEvent(QResizeEvent *e) |
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139 { |
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140 if (e->size() == e->oldSize()) |
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141 frameChanged(); |
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142 } |
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143 |
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144 /*! |
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145 Virtual function that is called when the frame style, line width |
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146 or mid-line width changes. |
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147 |
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148 This function can be reimplemented by subclasses that need to know |
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149 when the frame attributes change. |
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150 */ |
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151 |
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152 void Q3Frame::frameChanged() |
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153 { |
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154 } |
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155 |
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156 |
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157 /*! |
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158 \property Q3Frame::margin |
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159 \brief the width of the margin |
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160 |
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161 The margin is the distance between the innermost pixel of the |
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162 frame and the outermost pixel of contentsRect(). It is included in |
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163 frameWidth(). |
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164 |
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165 The margin is filled according to backgroundMode(). |
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166 |
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167 The default value is 0. |
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168 |
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169 \sa lineWidth(), frameWidth() |
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170 */ |
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171 |
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172 void Q3Frame::setMargin(int w) |
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173 { |
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174 if (marg == w) |
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175 return; |
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176 marg = w; |
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177 update(); |
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178 frameChanged(); |
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179 } |
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180 |
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181 /*! |
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182 \property Q3Frame::contentsRect |
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183 \brief the frame's contents rectangle (including the margins) |
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184 */ |
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185 QRect Q3Frame::contentsRect() const |
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186 { |
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187 QRect cr(QFrame::contentsRect()); |
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188 cr.adjust(marg, marg, -marg, -marg); |
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189 return cr; |
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190 } |
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191 |
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192 /*! |
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193 Returns the width of the frame (including the margin). |
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194 */ |
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195 int Q3Frame::frameWidth() const |
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196 { |
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197 return QFrame::frameWidth() + marg; |
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198 } |
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199 |
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200 QT_END_NAMESPACE |