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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2010 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 documentation 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 <QtGui> |
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43 #include <QApplication> |
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44 |
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45 class MyPushButton : public QPushButton |
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46 { |
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47 public: |
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48 MyPushButton(QWidget *parent = 0); |
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49 |
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50 void paintEvent(QPaintEvent *); |
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51 }; |
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52 |
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53 MyPushButton::MyPushButton(QWidget *parent) |
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54 : QPushButton(parent) |
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55 { |
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56 } |
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57 |
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58 //! [0] |
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59 void MyPushButton::paintEvent(QPaintEvent *) |
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60 { |
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61 QStyleOptionButton option; |
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62 option.initFrom(this); |
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63 option.state = isDown() ? QStyle::State_Sunken : QStyle::State_Raised; |
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64 if (isDefault()) |
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65 option.features |= QStyleOptionButton::DefaultButton; |
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66 option.text = text(); |
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67 option.icon = icon(); |
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68 |
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69 QPainter painter(this); |
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70 style()->drawControl(QStyle::CE_PushButton, &option, &painter, this); |
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71 } |
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72 //! [0] |
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73 |
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74 |
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75 |
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76 class MyStyle : public QStyle |
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77 { |
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78 public: |
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79 MyStyle(); |
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80 |
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81 void drawPrimitive(PrimitiveElement element, const QStyleOption *option, |
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82 QPainter *painter, const QWidget *widget); |
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83 }; |
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84 |
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85 MyStyle::MyStyle() |
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86 { |
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87 //! [1] |
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88 QStyleOptionFrame *option; |
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89 |
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90 if (const QStyleOptionFrame *frameOption = |
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91 qstyleoption_cast<const QStyleOptionFrame *>(option)) { |
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92 QStyleOptionFrameV2 frameOptionV2(*frameOption); |
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93 |
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94 // draw the frame using frameOptionV2 |
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95 } |
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96 //! [1] |
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97 |
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98 //! [2] |
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99 if (const QStyleOptionProgressBar *progressBarOption = |
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100 qstyleoption_cast<const QStyleOptionProgressBar *>(option)) { |
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101 QStyleOptionProgressBarV2 progressBarV2(*progressBarOption); |
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102 |
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103 // draw the progress bar using progressBarV2 |
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104 } |
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105 //! [2] |
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106 |
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107 //! [3] |
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108 if (const QStyleOptionTab *tabOption = |
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109 qstyleoption_cast<const QStyleOptionTab *>(option)) { |
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110 QStyleOptionTabV2 tabV2(*tabOption); |
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111 |
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112 // draw the tab using tabV2 |
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113 } |
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114 //! [3] |
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115 } |
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116 |
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117 //! [4] |
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118 void MyStyle::drawPrimitive(PrimitiveElement element, |
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119 const QStyleOption *option, |
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120 QPainter *painter, |
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121 const QWidget *widget) |
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122 { |
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123 if (element == PE_FrameFocusRect) { |
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124 const QStyleOptionFocusRect *focusRectOption = |
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125 qstyleoption_cast<const QStyleOptionFocusRect *>(option); |
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126 if (focusRectOption) { |
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127 // ... |
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128 } |
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129 } |
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130 // ... |
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131 } |
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132 //! [4] |
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133 |
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134 int main(int argc, char *argv[]) |
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135 { |
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136 QApplication app(argc, argv); |
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137 MyPushButton button; |
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138 button.show(); |
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139 return app.exec(); |
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140 } |