#include <QtGui>
 #include <math.h>
 #include "renderarea.h"
 #include "window.h"
 const float Pi = 3.14159f;
 Window::Window()
 {
     QPainterPath rectPath;
     rectPath.moveTo(20.0, 30.0);
     rectPath.lineTo(80.0, 30.0);
     rectPath.lineTo(80.0, 70.0);
     rectPath.lineTo(20.0, 70.0);
     rectPath.closeSubpath();
     QPainterPath roundRectPath;
     roundRectPath.moveTo(80.0, 35.0);
     roundRectPath.arcTo(70.0, 30.0, 10.0, 10.0, 0.0, 90.0);
     roundRectPath.lineTo(25.0, 30.0);
     roundRectPath.arcTo(20.0, 30.0, 10.0, 10.0, 90.0, 90.0);
     roundRectPath.lineTo(20.0, 65.0);
     roundRectPath.arcTo(20.0, 60.0, 10.0, 10.0, 180.0, 90.0);
     roundRectPath.lineTo(75.0, 70.0);
     roundRectPath.arcTo(70.0, 60.0, 10.0, 10.0, 270.0, 90.0);
     roundRectPath.closeSubpath();
     QPainterPath ellipsePath;
     ellipsePath.moveTo(80.0, 50.0);
     ellipsePath.arcTo(20.0, 30.0, 60.0, 40.0, 0.0, 360.0);
     QPainterPath piePath;
     piePath.moveTo(50.0, 50.0);
     piePath.arcTo(20.0, 30.0, 60.0, 40.0, 60.0, 240.0);
     piePath.closeSubpath();
     QPainterPath polygonPath;
     polygonPath.moveTo(10.0, 80.0);
     polygonPath.lineTo(20.0, 10.0);
     polygonPath.lineTo(80.0, 30.0);
     polygonPath.lineTo(90.0, 70.0);
     polygonPath.closeSubpath();
     QPainterPath groupPath;
     groupPath.moveTo(60.0, 40.0);
     groupPath.arcTo(20.0, 20.0, 40.0, 40.0, 0.0, 360.0);
     groupPath.moveTo(40.0, 40.0);
     groupPath.lineTo(40.0, 80.0);
     groupPath.lineTo(80.0, 80.0);
     groupPath.lineTo(80.0, 40.0);
     groupPath.closeSubpath();
     QPainterPath textPath;
     QFont timesFont("Times", 50);
     timesFont.setStyleStrategy(QFont::ForceOutline);
     textPath.addText(10, 70, timesFont, tr("Qt"));
     QPainterPath bezierPath;
     bezierPath.moveTo(20, 30);
     bezierPath.cubicTo(80, 0, 50, 50, 80, 80);
     QPainterPath starPath;
     starPath.moveTo(90, 50);
     for (int i = 1; i < 5; ++i) {
         starPath.lineTo(50 + 40 * cos(0.8 * i * Pi),
                         50 + 40 * sin(0.8 * i * Pi));
     }
     starPath.closeSubpath();
 #if !defined(Q_OS_SYMBIAN) && !defined(Q_WS_MAEMO_5) && !defined(Q_WS_SIMULATOR)
     renderAreas.push_back(new RenderArea(rectPath));
     renderAreas.push_back(new RenderArea(roundRectPath));
     renderAreas.push_back(new RenderArea(ellipsePath));
     renderAreas.push_back(new RenderArea(piePath));
     renderAreas.push_back(new RenderArea(polygonPath));
     renderAreas.push_back(new RenderArea(groupPath));
 #endif
     renderAreas.push_back(new RenderArea(textPath));
     renderAreas.push_back(new RenderArea(bezierPath));
     renderAreas.push_back(new RenderArea(starPath));
     fillRuleComboBox = new QComboBox;
     fillRuleComboBox->addItem(tr("Odd Even"), Qt::OddEvenFill);
     fillRuleComboBox->addItem(tr("Winding"), Qt::WindingFill);
     fillRuleLabel = new QLabel(tr("Fill &Rule:"));
     fillRuleLabel->setBuddy(fillRuleComboBox);
     fillColor1ComboBox = new QComboBox;
     populateWithColors(fillColor1ComboBox);
     fillColor1ComboBox->setCurrentIndex(
             fillColor1ComboBox->findText("mediumslateblue"));
     fillColor2ComboBox = new QComboBox;
     populateWithColors(fillColor2ComboBox);
     fillColor2ComboBox->setCurrentIndex(
             fillColor2ComboBox->findText("cornsilk"));
     fillGradientLabel = new QLabel(tr("&Fill Gradient:"));
     fillGradientLabel->setBuddy(fillColor1ComboBox);
     fillToLabel = new QLabel(tr("to"));
     fillToLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
     penWidthSpinBox = new QSpinBox;
     penWidthSpinBox->setRange(0, 20);
     penWidthLabel = new QLabel(tr("&Pen Width:"));
     penWidthLabel->setBuddy(penWidthSpinBox);
     penColorComboBox = new QComboBox;
     populateWithColors(penColorComboBox);
     penColorComboBox->setCurrentIndex(
             penColorComboBox->findText("darkslateblue"));
     penColorLabel = new QLabel(tr("Pen &Color:"));
     penColorLabel->setBuddy(penColorComboBox);
     rotationAngleSpinBox = new QSpinBox;
     rotationAngleSpinBox->setRange(0, 359);
     rotationAngleSpinBox->setWrapping(true);
     rotationAngleSpinBox->setSuffix("\xB0");
     rotationAngleLabel = new QLabel(tr("&Rotation Angle:"));
     rotationAngleLabel->setBuddy(rotationAngleSpinBox);
     connect(fillRuleComboBox, SIGNAL(activated(int)),
             this, SLOT(fillRuleChanged()));
     connect(fillColor1ComboBox, SIGNAL(activated(int)),
             this, SLOT(fillGradientChanged()));
     connect(fillColor2ComboBox, SIGNAL(activated(int)),
             this, SLOT(fillGradientChanged()));
     connect(penColorComboBox, SIGNAL(activated(int)),
             this, SLOT(penColorChanged()));
     for(QList<RenderArea*>::iterator it = renderAreas.begin(); it != renderAreas.end(); it++) {
         connect(penWidthSpinBox, SIGNAL(valueChanged(int)),
                 *it, SLOT(setPenWidth(int)));
         connect(rotationAngleSpinBox, SIGNAL(valueChanged(int)),
                 *it, SLOT(setRotationAngle(int)));
     }
     QGridLayout *topLayout = new QGridLayout;
 #if defined(Q_OS_SYMBIAN) || defined(Q_WS_MAEMO_5) || defined(Q_WS_SIMULATOR)
     topLayout->setSizeConstraint(QLayout::SetNoConstraint);
 #endif
     int i=0;
     for(QList<RenderArea*>::iterator it = renderAreas.begin(); it != renderAreas.end(); it++, i++)
         topLayout->addWidget(*it, i / 3, i % 3);
     QGridLayout *mainLayout = new QGridLayout;
 #if defined(Q_OS_SYMBIAN) || defined(Q_WS_MAEMO_5) || defined(Q_WS_SIMULATOR)
     mainLayout->setSizeConstraint(QLayout::SetNoConstraint);
 #endif
     mainLayout->addLayout(topLayout, 0, 0, 1, 4);
     mainLayout->addWidget(fillRuleLabel, 1, 0);
     mainLayout->addWidget(fillRuleComboBox, 1, 1, 1, 3);
     mainLayout->addWidget(fillGradientLabel, 2, 0);
     mainLayout->addWidget(fillColor1ComboBox, 2, 1);
     mainLayout->addWidget(fillToLabel, 2, 2);
     mainLayout->addWidget(fillColor2ComboBox, 2, 3);
     mainLayout->addWidget(penWidthLabel, 3, 0);
     mainLayout->addWidget(penWidthSpinBox, 3, 1, 1, 3);
     mainLayout->addWidget(penColorLabel, 4, 0);
     mainLayout->addWidget(penColorComboBox, 4, 1, 1, 3);
 #if !defined(Q_OS_SYMBIAN) && !defined(Q_WS_MAEMO_5) && !defined(Q_WS_SIMULATOR)
     mainLayout->addWidget(rotationAngleLabel, 5, 0);
     mainLayout->addWidget(rotationAngleSpinBox, 5, 1, 1, 3);
 #endif
     setLayout(mainLayout);
     fillRuleChanged();
     fillGradientChanged();
     penColorChanged();
     penWidthSpinBox->setValue(2);
     setWindowTitle(tr("Painter Paths"));
 }
 void Window::fillRuleChanged()
 {
     Qt::FillRule rule = (Qt::FillRule)currentItemData(fillRuleComboBox).toInt();
     for(QList<RenderArea*>::iterator it = renderAreas.begin(); it != renderAreas.end(); it++)
         (*it)->setFillRule(rule);
 }
 void Window::fillGradientChanged()
 {
     QColor color1 = qvariant_cast<QColor>(currentItemData(fillColor1ComboBox));
     QColor color2 = qvariant_cast<QColor>(currentItemData(fillColor2ComboBox));
     for(QList<RenderArea*>::iterator it = renderAreas.begin(); it != renderAreas.end(); it++)
         (*it)->setFillGradient(color1, color2);
 }
 void Window::penColorChanged()
 {
     QColor color = qvariant_cast<QColor>(currentItemData(penColorComboBox));
     for(QList<RenderArea*>::iterator it = renderAreas.begin(); it != renderAreas.end(); it++)
         (*it)->setPenColor(color);
 }
 void Window::populateWithColors(QComboBox *comboBox)
 {
     QStringList colorNames = QColor::colorNames();
     foreach (QString name, colorNames)
         comboBox->addItem(name, QColor(name));
 }
 QVariant Window::currentItemData(QComboBox *comboBox)
 {
     return comboBox->itemData(comboBox->currentIndex());
 }