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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 QtCore 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 "window.h" |
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43 |
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44 Window::Window(QWidget *parent) |
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45 : QWidget(parent), m_iconSize(64, 64) |
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46 { |
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47 m_ui.setupUi(this); |
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48 QButtonGroup *buttonGroup = qFindChild<QButtonGroup *>(this); // ### workaround for uic in 4.4 |
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49 m_ui.easingCurvePicker->setIconSize(m_iconSize); |
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50 m_ui.easingCurvePicker->setMinimumHeight(m_iconSize.height() + 50); |
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51 buttonGroup->setId(m_ui.lineRadio, 0); |
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52 buttonGroup->setId(m_ui.circleRadio, 1); |
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53 |
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54 QEasingCurve dummy; |
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55 m_ui.periodSpinBox->setValue(dummy.period()); |
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56 m_ui.amplitudeSpinBox->setValue(dummy.amplitude()); |
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57 m_ui.overshootSpinBox->setValue(dummy.overshoot()); |
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58 |
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59 connect(m_ui.easingCurvePicker, SIGNAL(currentRowChanged(int)), this, SLOT(curveChanged(int))); |
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60 connect(buttonGroup, SIGNAL(buttonClicked(int)), this, SLOT(pathChanged(int))); |
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61 connect(m_ui.periodSpinBox, SIGNAL(valueChanged(double)), this, SLOT(periodChanged(double))); |
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62 connect(m_ui.amplitudeSpinBox, SIGNAL(valueChanged(double)), this, SLOT(amplitudeChanged(double))); |
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63 connect(m_ui.overshootSpinBox, SIGNAL(valueChanged(double)), this, SLOT(overshootChanged(double))); |
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64 createCurveIcons(); |
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65 |
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66 QPixmap pix(QLatin1String(":/images/qt-logo.png")); |
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67 m_item = new PixmapItem(pix); |
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68 m_scene.addItem(m_item); |
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69 m_ui.graphicsView->setScene(&m_scene); |
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70 |
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71 m_anim = new Animation(m_item, "pos"); |
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72 m_anim->setEasingCurve(QEasingCurve::OutBounce); |
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73 m_ui.easingCurvePicker->setCurrentRow(int(QEasingCurve::OutBounce)); |
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74 |
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75 startAnimation(); |
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76 } |
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77 |
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78 void Window::createCurveIcons() |
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79 { |
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80 QPixmap pix(m_iconSize); |
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81 QPainter painter(&pix); |
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82 QLinearGradient gradient(0,0, 0, m_iconSize.height()); |
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83 gradient.setColorAt(0.0, QColor(240, 240, 240)); |
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84 gradient.setColorAt(1.0, QColor(224, 224, 224)); |
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85 QBrush brush(gradient); |
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86 const QMetaObject &mo = QEasingCurve::staticMetaObject; |
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87 QMetaEnum metaEnum = mo.enumerator(mo.indexOfEnumerator("Type")); |
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88 // Skip QEasingCurve::Custom |
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89 for (int i = 0; i < QEasingCurve::NCurveTypes - 1; ++i) { |
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90 painter.fillRect(QRect(QPoint(0, 0), m_iconSize), brush); |
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91 QEasingCurve curve((QEasingCurve::Type)i); |
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92 painter.setPen(QColor(0, 0, 255, 64)); |
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93 qreal xAxis = m_iconSize.height()/1.5; |
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94 qreal yAxis = m_iconSize.width()/3; |
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95 painter.drawLine(0, xAxis, m_iconSize.width(), xAxis); |
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96 painter.drawLine(yAxis, 0, yAxis, m_iconSize.height()); |
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97 |
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98 qreal curveScale = m_iconSize.height()/2; |
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99 |
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100 painter.setPen(Qt::NoPen); |
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101 |
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102 // start point |
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103 painter.setBrush(Qt::red); |
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104 QPoint start(yAxis, xAxis - curveScale * curve.valueForProgress(0)); |
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105 painter.drawRect(start.x() - 1, start.y() - 1, 3, 3); |
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106 |
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107 // end point |
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108 painter.setBrush(Qt::blue); |
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109 QPoint end(yAxis + curveScale, xAxis - curveScale * curve.valueForProgress(1)); |
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110 painter.drawRect(end.x() - 1, end.y() - 1, 3, 3); |
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111 |
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112 QPainterPath curvePath; |
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113 curvePath.moveTo(start); |
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114 for (qreal t = 0; t <= 1.0; t+=1.0/curveScale) { |
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115 QPoint to; |
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116 to.setX(yAxis + curveScale * t); |
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117 to.setY(xAxis - curveScale * curve.valueForProgress(t)); |
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118 curvePath.lineTo(to); |
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119 } |
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120 painter.setRenderHint(QPainter::Antialiasing, true); |
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121 painter.strokePath(curvePath, QColor(32, 32, 32)); |
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122 painter.setRenderHint(QPainter::Antialiasing, false); |
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123 QListWidgetItem *item = new QListWidgetItem; |
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124 item->setIcon(QIcon(pix)); |
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125 item->setText(metaEnum.key(i)); |
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126 m_ui.easingCurvePicker->addItem(item); |
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127 } |
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128 } |
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129 |
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130 void Window::startAnimation() |
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131 { |
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132 m_anim->setStartValue(QPointF(0, 0)); |
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133 m_anim->setEndValue(QPointF(100, 100)); |
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134 m_anim->setDuration(2000); |
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135 m_anim->setLoopCount(-1); // forever |
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136 m_anim->start(); |
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137 } |
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138 |
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139 void Window::curveChanged(int row) |
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140 { |
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141 QEasingCurve::Type curveType = (QEasingCurve::Type)row; |
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142 m_anim->setEasingCurve(curveType); |
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143 m_anim->setCurrentTime(0); |
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144 |
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145 bool isElastic = curveType >= QEasingCurve::InElastic && curveType <= QEasingCurve::OutInElastic; |
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146 bool isBounce = curveType >= QEasingCurve::InBounce && curveType <= QEasingCurve::OutInBounce; |
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147 m_ui.periodSpinBox->setEnabled(isElastic); |
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148 m_ui.amplitudeSpinBox->setEnabled(isElastic || isBounce); |
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149 m_ui.overshootSpinBox->setEnabled(curveType >= QEasingCurve::InBack && curveType <= QEasingCurve::OutInBack); |
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150 } |
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151 |
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152 void Window::pathChanged(int index) |
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153 { |
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154 m_anim->setPathType((Animation::PathType)index); |
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155 } |
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156 |
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157 void Window::periodChanged(double value) |
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158 { |
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159 QEasingCurve curve = m_anim->easingCurve(); |
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160 curve.setPeriod(value); |
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161 m_anim->setEasingCurve(curve); |
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162 } |
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163 |
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164 void Window::amplitudeChanged(double value) |
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165 { |
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166 QEasingCurve curve = m_anim->easingCurve(); |
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167 curve.setAmplitude(value); |
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168 m_anim->setEasingCurve(curve); |
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169 } |
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170 |
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171 void Window::overshootChanged(double value) |
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172 { |
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173 QEasingCurve curve = m_anim->easingCurve(); |
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174 curve.setOvershoot(value); |
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175 m_anim->setEasingCurve(curve); |
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176 } |
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177 |