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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 examples 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 |
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44 #include <math.h> |
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45 |
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46 #include "renderarea.h" |
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47 #include "window.h" |
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48 |
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49 //! [0] |
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50 const float Pi = 3.14159f; |
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51 //! [0] |
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52 |
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53 //! [1] |
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54 Window::Window() |
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55 { |
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56 QPainterPath rectPath; |
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57 rectPath.moveTo(20.0, 30.0); |
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58 rectPath.lineTo(80.0, 30.0); |
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59 rectPath.lineTo(80.0, 70.0); |
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60 rectPath.lineTo(20.0, 70.0); |
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61 rectPath.closeSubpath(); |
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62 //! [1] |
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63 |
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64 //! [2] |
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65 QPainterPath roundRectPath; |
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66 roundRectPath.moveTo(80.0, 35.0); |
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67 roundRectPath.arcTo(70.0, 30.0, 10.0, 10.0, 0.0, 90.0); |
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68 roundRectPath.lineTo(25.0, 30.0); |
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69 roundRectPath.arcTo(20.0, 30.0, 10.0, 10.0, 90.0, 90.0); |
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70 roundRectPath.lineTo(20.0, 65.0); |
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71 roundRectPath.arcTo(20.0, 60.0, 10.0, 10.0, 180.0, 90.0); |
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72 roundRectPath.lineTo(75.0, 70.0); |
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73 roundRectPath.arcTo(70.0, 60.0, 10.0, 10.0, 270.0, 90.0); |
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74 roundRectPath.closeSubpath(); |
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75 //! [2] |
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76 |
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77 //! [3] |
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78 QPainterPath ellipsePath; |
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79 ellipsePath.moveTo(80.0, 50.0); |
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80 ellipsePath.arcTo(20.0, 30.0, 60.0, 40.0, 0.0, 360.0); |
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81 //! [3] |
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82 |
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83 //! [4] |
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84 QPainterPath piePath; |
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85 piePath.moveTo(50.0, 50.0); |
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86 piePath.arcTo(20.0, 30.0, 60.0, 40.0, 60.0, 240.0); |
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87 piePath.closeSubpath(); |
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88 //! [4] |
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89 |
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90 //! [5] |
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91 QPainterPath polygonPath; |
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92 polygonPath.moveTo(10.0, 80.0); |
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93 polygonPath.lineTo(20.0, 10.0); |
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94 polygonPath.lineTo(80.0, 30.0); |
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95 polygonPath.lineTo(90.0, 70.0); |
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96 polygonPath.closeSubpath(); |
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97 //! [5] |
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98 |
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99 //! [6] |
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100 QPainterPath groupPath; |
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101 groupPath.moveTo(60.0, 40.0); |
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102 groupPath.arcTo(20.0, 20.0, 40.0, 40.0, 0.0, 360.0); |
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103 groupPath.moveTo(40.0, 40.0); |
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104 groupPath.lineTo(40.0, 80.0); |
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105 groupPath.lineTo(80.0, 80.0); |
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106 groupPath.lineTo(80.0, 40.0); |
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107 groupPath.closeSubpath(); |
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108 //! [6] |
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109 |
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110 //! [7] |
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111 QPainterPath textPath; |
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112 QFont timesFont("Times", 50); |
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113 timesFont.setStyleStrategy(QFont::ForceOutline); |
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114 textPath.addText(10, 70, timesFont, tr("Qt")); |
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115 //! [7] |
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116 |
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117 //! [8] |
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118 QPainterPath bezierPath; |
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119 bezierPath.moveTo(20, 30); |
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120 bezierPath.cubicTo(80, 0, 50, 50, 80, 80); |
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121 //! [8] |
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122 |
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123 //! [9] |
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124 QPainterPath starPath; |
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125 starPath.moveTo(90, 50); |
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126 for (int i = 1; i < 5; ++i) { |
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127 starPath.lineTo(50 + 40 * cos(0.8 * i * Pi), |
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128 50 + 40 * sin(0.8 * i * Pi)); |
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129 } |
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130 starPath.closeSubpath(); |
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131 //! [9] |
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132 |
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133 //! [10] |
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134 renderAreas[0] = new RenderArea(rectPath); |
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135 renderAreas[1] = new RenderArea(roundRectPath); |
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136 renderAreas[2] = new RenderArea(ellipsePath); |
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137 renderAreas[3] = new RenderArea(piePath); |
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138 renderAreas[4] = new RenderArea(polygonPath); |
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139 renderAreas[5] = new RenderArea(groupPath); |
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140 renderAreas[6] = new RenderArea(textPath); |
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141 renderAreas[7] = new RenderArea(bezierPath); |
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142 renderAreas[8] = new RenderArea(starPath); |
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143 Q_ASSERT(NumRenderAreas == 9); |
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144 //! [10] |
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145 |
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146 //! [11] |
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147 fillRuleComboBox = new QComboBox; |
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148 fillRuleComboBox->addItem(tr("Odd Even"), Qt::OddEvenFill); |
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149 fillRuleComboBox->addItem(tr("Winding"), Qt::WindingFill); |
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150 |
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151 fillRuleLabel = new QLabel(tr("Fill &Rule:")); |
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152 fillRuleLabel->setBuddy(fillRuleComboBox); |
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153 //! [11] |
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154 |
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155 //! [12] |
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156 fillColor1ComboBox = new QComboBox; |
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157 populateWithColors(fillColor1ComboBox); |
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158 fillColor1ComboBox->setCurrentIndex( |
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159 fillColor1ComboBox->findText("mediumslateblue")); |
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160 |
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161 fillColor2ComboBox = new QComboBox; |
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162 populateWithColors(fillColor2ComboBox); |
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163 fillColor2ComboBox->setCurrentIndex( |
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164 fillColor2ComboBox->findText("cornsilk")); |
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165 |
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166 fillGradientLabel = new QLabel(tr("&Fill Gradient:")); |
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167 fillGradientLabel->setBuddy(fillColor1ComboBox); |
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168 |
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169 fillToLabel = new QLabel(tr("to")); |
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170 fillToLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed); |
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171 |
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172 penWidthSpinBox = new QSpinBox; |
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173 penWidthSpinBox->setRange(0, 20); |
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174 |
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175 penWidthLabel = new QLabel(tr("&Pen Width:")); |
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176 penWidthLabel->setBuddy(penWidthSpinBox); |
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177 |
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178 penColorComboBox = new QComboBox; |
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179 populateWithColors(penColorComboBox); |
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180 penColorComboBox->setCurrentIndex( |
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181 penColorComboBox->findText("darkslateblue")); |
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182 |
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183 penColorLabel = new QLabel(tr("Pen &Color:")); |
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184 penColorLabel->setBuddy(penColorComboBox); |
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185 |
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186 rotationAngleSpinBox = new QSpinBox; |
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187 rotationAngleSpinBox->setRange(0, 359); |
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188 rotationAngleSpinBox->setWrapping(true); |
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189 rotationAngleSpinBox->setSuffix("\xB0"); |
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190 |
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191 rotationAngleLabel = new QLabel(tr("&Rotation Angle:")); |
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192 rotationAngleLabel->setBuddy(rotationAngleSpinBox); |
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193 //! [12] |
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194 |
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195 //! [16] |
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196 connect(fillRuleComboBox, SIGNAL(activated(int)), |
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197 this, SLOT(fillRuleChanged())); |
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198 connect(fillColor1ComboBox, SIGNAL(activated(int)), |
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199 this, SLOT(fillGradientChanged())); |
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200 connect(fillColor2ComboBox, SIGNAL(activated(int)), |
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201 this, SLOT(fillGradientChanged())); |
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202 connect(penColorComboBox, SIGNAL(activated(int)), |
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203 this, SLOT(penColorChanged())); |
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204 |
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205 for (int i = 0; i < NumRenderAreas; ++i) { |
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206 connect(penWidthSpinBox, SIGNAL(valueChanged(int)), |
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207 renderAreas[i], SLOT(setPenWidth(int))); |
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208 connect(rotationAngleSpinBox, SIGNAL(valueChanged(int)), |
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209 renderAreas[i], SLOT(setRotationAngle(int))); |
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210 } |
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211 |
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212 //! [16] //! [17] |
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213 QGridLayout *topLayout = new QGridLayout; |
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214 for (int i = 0; i < NumRenderAreas; ++i) |
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215 topLayout->addWidget(renderAreas[i], i / 3, i % 3); |
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216 |
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217 QGridLayout *mainLayout = new QGridLayout; |
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218 mainLayout->addLayout(topLayout, 0, 0, 1, 4); |
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219 mainLayout->addWidget(fillRuleLabel, 1, 0); |
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220 mainLayout->addWidget(fillRuleComboBox, 1, 1, 1, 3); |
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221 mainLayout->addWidget(fillGradientLabel, 2, 0); |
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222 mainLayout->addWidget(fillColor1ComboBox, 2, 1); |
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223 mainLayout->addWidget(fillToLabel, 2, 2); |
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224 mainLayout->addWidget(fillColor2ComboBox, 2, 3); |
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225 mainLayout->addWidget(penWidthLabel, 3, 0); |
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226 mainLayout->addWidget(penWidthSpinBox, 3, 1, 1, 3); |
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227 mainLayout->addWidget(penColorLabel, 4, 0); |
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228 mainLayout->addWidget(penColorComboBox, 4, 1, 1, 3); |
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229 mainLayout->addWidget(rotationAngleLabel, 5, 0); |
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230 mainLayout->addWidget(rotationAngleSpinBox, 5, 1, 1, 3); |
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231 setLayout(mainLayout); |
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232 //! [17] |
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233 |
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234 //! [18] |
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235 fillRuleChanged(); |
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236 fillGradientChanged(); |
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237 penColorChanged(); |
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238 penWidthSpinBox->setValue(2); |
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239 |
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240 setWindowTitle(tr("Painter Paths")); |
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241 } |
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242 //! [18] |
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243 |
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244 //! [19] |
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245 void Window::fillRuleChanged() |
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246 { |
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247 Qt::FillRule rule = (Qt::FillRule)currentItemData(fillRuleComboBox).toInt(); |
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248 |
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249 for (int i = 0; i < NumRenderAreas; ++i) |
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250 renderAreas[i]->setFillRule(rule); |
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251 } |
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252 //! [19] |
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253 |
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254 //! [20] |
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255 void Window::fillGradientChanged() |
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256 { |
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257 QColor color1 = qvariant_cast<QColor>(currentItemData(fillColor1ComboBox)); |
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258 QColor color2 = qvariant_cast<QColor>(currentItemData(fillColor2ComboBox)); |
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259 |
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260 for (int i = 0; i < NumRenderAreas; ++i) |
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261 renderAreas[i]->setFillGradient(color1, color2); |
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262 } |
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263 //! [20] |
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264 |
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265 //! [21] |
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266 void Window::penColorChanged() |
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267 { |
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268 QColor color = qvariant_cast<QColor>(currentItemData(penColorComboBox)); |
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269 |
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270 for (int i = 0; i < NumRenderAreas; ++i) |
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271 renderAreas[i]->setPenColor(color); |
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272 } |
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273 //! [21] |
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274 |
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275 //! [22] |
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276 void Window::populateWithColors(QComboBox *comboBox) |
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277 { |
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278 QStringList colorNames = QColor::colorNames(); |
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279 foreach (QString name, colorNames) |
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280 comboBox->addItem(name, QColor(name)); |
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281 } |
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282 //! [22] |
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283 |
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284 //! [23] |
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285 QVariant Window::currentItemData(QComboBox *comboBox) |
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286 { |
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287 return comboBox->itemData(comboBox->currentIndex()); |
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288 } |
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289 //! [23] |