qt-everywhere-src-5.14.1/qtbase/examples/widgets/painting/basicdrawing/window.cpp - orbit - Git at Google

 /****************************************************************************
 **
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** Commercial License Usage
 ** Licensees holding valid commercial Qt licenses may use this file in
 ** accordance with the commercial license agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and The Qt Company. For licensing terms
 ** and conditions see https://www.qt.io/terms-conditions. For further
 ** information use the contact form at https://www.qt.io/contact-us.
 **
 ** BSD License Usage
 ** Alternatively, you may use this file under the terms of the BSD license
 ** as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
 **   * Redistributions in binary form must reproduce the above copyright
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of The Qt Company Ltd nor the names of its
 **     contributors may be used to endorse or promote products derived
 **     from this software without specific prior written permission.
 **
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include "renderarea.h"
 #include "window.h"

 #include <QtWidgets>

 //! [0]
 const int IdRole = Qt::UserRole;
 //! [0]

 //! [1]
 Window::Window()
 {
     renderArea = new RenderArea;

     shapeComboBox = new QComboBox;
     shapeComboBox->addItem(tr("Polygon"), RenderArea::Polygon);
     shapeComboBox->addItem(tr("Rectangle"), RenderArea::Rect);
     shapeComboBox->addItem(tr("Rounded Rectangle"), RenderArea::RoundedRect);
     shapeComboBox->addItem(tr("Ellipse"), RenderArea::Ellipse);
     shapeComboBox->addItem(tr("Pie"), RenderArea::Pie);
     shapeComboBox->addItem(tr("Chord"), RenderArea::Chord);
     shapeComboBox->addItem(tr("Path"), RenderArea::Path);
     shapeComboBox->addItem(tr("Line"), RenderArea::Line);
     shapeComboBox->addItem(tr("Polyline"), RenderArea::Polyline);
     shapeComboBox->addItem(tr("Arc"), RenderArea::Arc);
     shapeComboBox->addItem(tr("Points"), RenderArea::Points);
     shapeComboBox->addItem(tr("Text"), RenderArea::Text);
     shapeComboBox->addItem(tr("Pixmap"), RenderArea::Pixmap);

     shapeLabel = new QLabel(tr("&Shape:"));
     shapeLabel->setBuddy(shapeComboBox);
 //! [1]

 //! [2]
     penWidthSpinBox = new QSpinBox;
     penWidthSpinBox->setRange(0, 20);
     penWidthSpinBox->setSpecialValueText(tr("0 (cosmetic pen)"));

     penWidthLabel = new QLabel(tr("Pen &Width:"));
     penWidthLabel->setBuddy(penWidthSpinBox);
 //! [2]

 //! [3]
     penStyleComboBox = new QComboBox;
     penStyleComboBox->addItem(tr("Solid"), static_cast<int>(Qt::SolidLine));
     penStyleComboBox->addItem(tr("Dash"), static_cast<int>(Qt::DashLine));
     penStyleComboBox->addItem(tr("Dot"), static_cast<int>(Qt::DotLine));
     penStyleComboBox->addItem(tr("Dash Dot"), static_cast<int>(Qt::DashDotLine));
     penStyleComboBox->addItem(tr("Dash Dot Dot"), static_cast<int>(Qt::DashDotDotLine));
     penStyleComboBox->addItem(tr("None"), static_cast<int>(Qt::NoPen));

     penStyleLabel = new QLabel(tr("&Pen Style:"));
     penStyleLabel->setBuddy(penStyleComboBox);

     penCapComboBox = new QComboBox;
     penCapComboBox->addItem(tr("Flat"), Qt::FlatCap);
     penCapComboBox->addItem(tr("Square"), Qt::SquareCap);
     penCapComboBox->addItem(tr("Round"), Qt::RoundCap);

     penCapLabel = new QLabel(tr("Pen &Cap:"));
     penCapLabel->setBuddy(penCapComboBox);

     penJoinComboBox = new QComboBox;
     penJoinComboBox->addItem(tr("Miter"), Qt::MiterJoin);
     penJoinComboBox->addItem(tr("Bevel"), Qt::BevelJoin);
     penJoinComboBox->addItem(tr("Round"), Qt::RoundJoin);

     penJoinLabel = new QLabel(tr("Pen &Join:"));
     penJoinLabel->setBuddy(penJoinComboBox);
 //! [3]

 //! [4]
     brushStyleComboBox = new QComboBox;
     brushStyleComboBox->addItem(tr("Linear Gradient"),
             static_cast<int>(Qt::LinearGradientPattern));
     brushStyleComboBox->addItem(tr("Radial Gradient"),
             static_cast<int>(Qt::RadialGradientPattern));
     brushStyleComboBox->addItem(tr("Conical Gradient"),
             static_cast<int>(Qt::ConicalGradientPattern));
     brushStyleComboBox->addItem(tr("Texture"), static_cast<int>(Qt::TexturePattern));
     brushStyleComboBox->addItem(tr("Solid"), static_cast<int>(Qt::SolidPattern));
     brushStyleComboBox->addItem(tr("Horizontal"), static_cast<int>(Qt::HorPattern));
     brushStyleComboBox->addItem(tr("Vertical"), static_cast<int>(Qt::VerPattern));
     brushStyleComboBox->addItem(tr("Cross"), static_cast<int>(Qt::CrossPattern));
     brushStyleComboBox->addItem(tr("Backward Diagonal"), static_cast<int>(Qt::BDiagPattern));
     brushStyleComboBox->addItem(tr("Forward Diagonal"), static_cast<int>(Qt::FDiagPattern));
     brushStyleComboBox->addItem(tr("Diagonal Cross"), static_cast<int>(Qt::DiagCrossPattern));
     brushStyleComboBox->addItem(tr("Dense 1"), static_cast<int>(Qt::Dense1Pattern));
     brushStyleComboBox->addItem(tr("Dense 2"), static_cast<int>(Qt::Dense2Pattern));
     brushStyleComboBox->addItem(tr("Dense 3"), static_cast<int>(Qt::Dense3Pattern));
     brushStyleComboBox->addItem(tr("Dense 4"), static_cast<int>(Qt::Dense4Pattern));
     brushStyleComboBox->addItem(tr("Dense 5"), static_cast<int>(Qt::Dense5Pattern));
     brushStyleComboBox->addItem(tr("Dense 6"), static_cast<int>(Qt::Dense6Pattern));
     brushStyleComboBox->addItem(tr("Dense 7"), static_cast<int>(Qt::Dense7Pattern));
     brushStyleComboBox->addItem(tr("None"), static_cast<int>(Qt::NoBrush));

     brushStyleLabel = new QLabel(tr("&Brush:"));
     brushStyleLabel->setBuddy(brushStyleComboBox);
 //! [4]

 //! [5]
     otherOptionsLabel = new QLabel(tr("Options:"));
 //! [5] //! [6]
     antialiasingCheckBox = new QCheckBox(tr("&Antialiasing"));
 //! [6] //! [7]
     transformationsCheckBox = new QCheckBox(tr("&Transformations"));
 //! [7]

 //! [8]
     connect(shapeComboBox, QOverload<int>::of(&QComboBox::activated),
             this, &Window::shapeChanged);
     connect(penWidthSpinBox, QOverload<int>::of(&QSpinBox::valueChanged),
             this, &Window::penChanged);
     connect(penStyleComboBox, QOverload<int>::of(&QComboBox::activated),
             this, &Window::penChanged);
     connect(penCapComboBox, QOverload<int>::of(&QComboBox::activated),
             this, &Window::penChanged);
     connect(penJoinComboBox, QOverload<int>::of(&QComboBox::activated),
             this, &Window::penChanged);
     connect(brushStyleComboBox, QOverload<int>::of(&QComboBox::activated),
             this, &Window::brushChanged);
     connect(antialiasingCheckBox, &QAbstractButton::toggled,
             renderArea, &RenderArea::setAntialiased);
     connect(transformationsCheckBox, &QAbstractButton::toggled,
             renderArea, &RenderArea::setTransformed);
 //! [8]

 //! [9]
     QGridLayout *mainLayout = new QGridLayout;
 //! [9] //! [10]
     mainLayout->setColumnStretch(0, 1);
     mainLayout->setColumnStretch(3, 1);
     mainLayout->addWidget(renderArea, 0, 0, 1, 4);
     mainLayout->addWidget(shapeLabel, 2, 0, Qt::AlignRight);
     mainLayout->addWidget(shapeComboBox, 2, 1);
     mainLayout->addWidget(penWidthLabel, 3, 0, Qt::AlignRight);
     mainLayout->addWidget(penWidthSpinBox, 3, 1);
     mainLayout->addWidget(penStyleLabel, 4, 0, Qt::AlignRight);
     mainLayout->addWidget(penStyleComboBox, 4, 1);
     mainLayout->addWidget(penCapLabel, 3, 2, Qt::AlignRight);
     mainLayout->addWidget(penCapComboBox, 3, 3);
     mainLayout->addWidget(penJoinLabel, 2, 2, Qt::AlignRight);
     mainLayout->addWidget(penJoinComboBox, 2, 3);
     mainLayout->addWidget(brushStyleLabel, 4, 2, Qt::AlignRight);
     mainLayout->addWidget(brushStyleComboBox, 4, 3);
     mainLayout->addWidget(otherOptionsLabel, 5, 0, Qt::AlignRight);
     mainLayout->addWidget(antialiasingCheckBox, 5, 1, 1, 1, Qt::AlignRight);
     mainLayout->addWidget(transformationsCheckBox, 5, 2, 1, 2, Qt::AlignRight);
     setLayout(mainLayout);

     shapeChanged();
     penChanged();
     brushChanged();
     antialiasingCheckBox->setChecked(true);

     setWindowTitle(tr("Basic Drawing"));
 }
 //! [10]

 //! [11]
 void Window::shapeChanged()
 {
     RenderArea::Shape shape = RenderArea::Shape(shapeComboBox->itemData(
             shapeComboBox->currentIndex(), IdRole).toInt());
     renderArea->setShape(shape);
 }
 //! [11]

 //! [12]
 void Window::penChanged()
 {
     int width = penWidthSpinBox->value();
     Qt::PenStyle style = Qt::PenStyle(penStyleComboBox->itemData(
             penStyleComboBox->currentIndex(), IdRole).toInt());
     Qt::PenCapStyle cap = Qt::PenCapStyle(penCapComboBox->itemData(
             penCapComboBox->currentIndex(), IdRole).toInt());
     Qt::PenJoinStyle join = Qt::PenJoinStyle(penJoinComboBox->itemData(
             penJoinComboBox->currentIndex(), IdRole).toInt());

     renderArea->setPen(QPen(Qt::blue, width, style, cap, join));
 }
 //! [12]

 //! [13]
 void Window::brushChanged()
 {
     Qt::BrushStyle style = Qt::BrushStyle(brushStyleComboBox->itemData(
 //! [13]
             brushStyleComboBox->currentIndex(), IdRole).toInt());

 //! [14]
     if (style == Qt::LinearGradientPattern) {
         QLinearGradient linearGradient(0, 0, 100, 100);
         linearGradient.setColorAt(0.0, Qt::white);
         linearGradient.setColorAt(0.2, Qt::green);
         linearGradient.setColorAt(1.0, Qt::black);
         renderArea->setBrush(linearGradient);
 //! [14] //! [15]
     } else if (style == Qt::RadialGradientPattern) {
         QRadialGradient radialGradient(50, 50, 50, 70, 70);
         radialGradient.setColorAt(0.0, Qt::white);
         radialGradient.setColorAt(0.2, Qt::green);
         radialGradient.setColorAt(1.0, Qt::black);
         renderArea->setBrush(radialGradient);
     } else if (style == Qt::ConicalGradientPattern) {
         QConicalGradient conicalGradient(50, 50, 150);
         conicalGradient.setColorAt(0.0, Qt::white);
         conicalGradient.setColorAt(0.2, Qt::green);
         conicalGradient.setColorAt(1.0, Qt::black);
         renderArea->setBrush(conicalGradient);
 //! [15] //! [16]
     } else if (style == Qt::TexturePattern) {
         renderArea->setBrush(QBrush(QPixmap(":/images/brick.png")));
 //! [16] //! [17]
     } else {
         renderArea->setBrush(QBrush(Qt::green, style));
     }
 }
 //! [17]
	/****************************************************************************
	**
	** Copyright (C) 2016 The Qt Company Ltd.
	** Contact: https://www.qt.io/licensing/
	**
	** This file is part of the examples of the Qt Toolkit.
	**
	** $QT_BEGIN_LICENSE:BSD$
	** Commercial License Usage
	** Licensees holding valid commercial Qt licenses may use this file in
	** accordance with the commercial license agreement provided with the
	** Software or, alternatively, in accordance with the terms contained in
	** a written agreement between you and The Qt Company. For licensing terms
	** and conditions see https://www.qt.io/terms-conditions. For further
	** information use the contact form at https://www.qt.io/contact-us.
	**
	** BSD License Usage
	** Alternatively, you may use this file under the terms of the BSD license
	** as follows:
	**
	** "Redistribution and use in source and binary forms, with or without
	** modification, are permitted provided that the following conditions are
	** met:
	** * Redistributions of source code must retain the above copyright
	** notice, this list of conditions and the following disclaimer.
	** * Redistributions in binary form must reproduce the above copyright
	** notice, this list of conditions and the following disclaimer in
	** the documentation and/or other materials provided with the
	** distribution.
	** * Neither the name of The Qt Company Ltd nor the names of its
	** contributors may be used to endorse or promote products derived
	** from this software without specific prior written permission.
	**
	**
	** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
	**
	** $QT_END_LICENSE$
	**
	****************************************************************************/

	#include "renderarea.h"
	#include "window.h"

	#include <QtWidgets>

	//! [0]
	const int IdRole = Qt::UserRole;
	//! [0]

	//! [1]
	Window::Window()
	{
	renderArea = new RenderArea;

	shapeComboBox = new QComboBox;
	shapeComboBox->addItem(tr("Polygon"), RenderArea::Polygon);
	shapeComboBox->addItem(tr("Rectangle"), RenderArea::Rect);
	shapeComboBox->addItem(tr("Rounded Rectangle"), RenderArea::RoundedRect);
	shapeComboBox->addItem(tr("Ellipse"), RenderArea::Ellipse);
	shapeComboBox->addItem(tr("Pie"), RenderArea::Pie);
	shapeComboBox->addItem(tr("Chord"), RenderArea::Chord);
	shapeComboBox->addItem(tr("Path"), RenderArea::Path);
	shapeComboBox->addItem(tr("Line"), RenderArea::Line);
	shapeComboBox->addItem(tr("Polyline"), RenderArea::Polyline);
	shapeComboBox->addItem(tr("Arc"), RenderArea::Arc);
	shapeComboBox->addItem(tr("Points"), RenderArea::Points);
	shapeComboBox->addItem(tr("Text"), RenderArea::Text);
	shapeComboBox->addItem(tr("Pixmap"), RenderArea::Pixmap);

	shapeLabel = new QLabel(tr("&Shape:"));
	shapeLabel->setBuddy(shapeComboBox);
	//! [1]

	//! [2]
	penWidthSpinBox = new QSpinBox;
	penWidthSpinBox->setRange(0, 20);
	penWidthSpinBox->setSpecialValueText(tr("0 (cosmetic pen)"));

	penWidthLabel = new QLabel(tr("Pen &Width:"));
	penWidthLabel->setBuddy(penWidthSpinBox);
	//! [2]

	//! [3]
	penStyleComboBox = new QComboBox;
	penStyleComboBox->addItem(tr("Solid"), static_cast<int>(Qt::SolidLine));
	penStyleComboBox->addItem(tr("Dash"), static_cast<int>(Qt::DashLine));
	penStyleComboBox->addItem(tr("Dot"), static_cast<int>(Qt::DotLine));
	penStyleComboBox->addItem(tr("Dash Dot"), static_cast<int>(Qt::DashDotLine));
	penStyleComboBox->addItem(tr("Dash Dot Dot"), static_cast<int>(Qt::DashDotDotLine));
	penStyleComboBox->addItem(tr("None"), static_cast<int>(Qt::NoPen));

	penStyleLabel = new QLabel(tr("&Pen Style:"));
	penStyleLabel->setBuddy(penStyleComboBox);

	penCapComboBox = new QComboBox;
	penCapComboBox->addItem(tr("Flat"), Qt::FlatCap);
	penCapComboBox->addItem(tr("Square"), Qt::SquareCap);
	penCapComboBox->addItem(tr("Round"), Qt::RoundCap);

	penCapLabel = new QLabel(tr("Pen &Cap:"));
	penCapLabel->setBuddy(penCapComboBox);

	penJoinComboBox = new QComboBox;
	penJoinComboBox->addItem(tr("Miter"), Qt::MiterJoin);
	penJoinComboBox->addItem(tr("Bevel"), Qt::BevelJoin);
	penJoinComboBox->addItem(tr("Round"), Qt::RoundJoin);

	penJoinLabel = new QLabel(tr("Pen &Join:"));
	penJoinLabel->setBuddy(penJoinComboBox);
	//! [3]

	//! [4]
	brushStyleComboBox = new QComboBox;
	brushStyleComboBox->addItem(tr("Linear Gradient"),
	static_cast<int>(Qt::LinearGradientPattern));
	brushStyleComboBox->addItem(tr("Radial Gradient"),
	static_cast<int>(Qt::RadialGradientPattern));
	brushStyleComboBox->addItem(tr("Conical Gradient"),
	static_cast<int>(Qt::ConicalGradientPattern));
	brushStyleComboBox->addItem(tr("Texture"), static_cast<int>(Qt::TexturePattern));
	brushStyleComboBox->addItem(tr("Solid"), static_cast<int>(Qt::SolidPattern));
	brushStyleComboBox->addItem(tr("Horizontal"), static_cast<int>(Qt::HorPattern));
	brushStyleComboBox->addItem(tr("Vertical"), static_cast<int>(Qt::VerPattern));
	brushStyleComboBox->addItem(tr("Cross"), static_cast<int>(Qt::CrossPattern));
	brushStyleComboBox->addItem(tr("Backward Diagonal"), static_cast<int>(Qt::BDiagPattern));
	brushStyleComboBox->addItem(tr("Forward Diagonal"), static_cast<int>(Qt::FDiagPattern));
	brushStyleComboBox->addItem(tr("Diagonal Cross"), static_cast<int>(Qt::DiagCrossPattern));
	brushStyleComboBox->addItem(tr("Dense 1"), static_cast<int>(Qt::Dense1Pattern));
	brushStyleComboBox->addItem(tr("Dense 2"), static_cast<int>(Qt::Dense2Pattern));
	brushStyleComboBox->addItem(tr("Dense 3"), static_cast<int>(Qt::Dense3Pattern));
	brushStyleComboBox->addItem(tr("Dense 4"), static_cast<int>(Qt::Dense4Pattern));
	brushStyleComboBox->addItem(tr("Dense 5"), static_cast<int>(Qt::Dense5Pattern));
	brushStyleComboBox->addItem(tr("Dense 6"), static_cast<int>(Qt::Dense6Pattern));
	brushStyleComboBox->addItem(tr("Dense 7"), static_cast<int>(Qt::Dense7Pattern));
	brushStyleComboBox->addItem(tr("None"), static_cast<int>(Qt::NoBrush));

	brushStyleLabel = new QLabel(tr("&Brush:"));
	brushStyleLabel->setBuddy(brushStyleComboBox);
	//! [4]

	//! [5]
	otherOptionsLabel = new QLabel(tr("Options:"));
	//! [5] //! [6]
	antialiasingCheckBox = new QCheckBox(tr("&Antialiasing"));
	//! [6] //! [7]
	transformationsCheckBox = new QCheckBox(tr("&Transformations"));
	//! [7]

	//! [8]
	connect(shapeComboBox, QOverload<int>::of(&QComboBox::activated),
	this, &Window::shapeChanged);
	connect(penWidthSpinBox, QOverload<int>::of(&QSpinBox::valueChanged),
	this, &Window::penChanged);
	connect(penStyleComboBox, QOverload<int>::of(&QComboBox::activated),
	this, &Window::penChanged);
	connect(penCapComboBox, QOverload<int>::of(&QComboBox::activated),
	this, &Window::penChanged);
	connect(penJoinComboBox, QOverload<int>::of(&QComboBox::activated),
	this, &Window::penChanged);
	connect(brushStyleComboBox, QOverload<int>::of(&QComboBox::activated),
	this, &Window::brushChanged);
	connect(antialiasingCheckBox, &QAbstractButton::toggled,
	renderArea, &RenderArea::setAntialiased);
	connect(transformationsCheckBox, &QAbstractButton::toggled,
	renderArea, &RenderArea::setTransformed);
	//! [8]

	//! [9]
	QGridLayout *mainLayout = new QGridLayout;
	//! [9] //! [10]
	mainLayout->setColumnStretch(0, 1);
	mainLayout->setColumnStretch(3, 1);
	mainLayout->addWidget(renderArea, 0, 0, 1, 4);
	mainLayout->addWidget(shapeLabel, 2, 0, Qt::AlignRight);
	mainLayout->addWidget(shapeComboBox, 2, 1);
	mainLayout->addWidget(penWidthLabel, 3, 0, Qt::AlignRight);
	mainLayout->addWidget(penWidthSpinBox, 3, 1);
	mainLayout->addWidget(penStyleLabel, 4, 0, Qt::AlignRight);
	mainLayout->addWidget(penStyleComboBox, 4, 1);
	mainLayout->addWidget(penCapLabel, 3, 2, Qt::AlignRight);
	mainLayout->addWidget(penCapComboBox, 3, 3);
	mainLayout->addWidget(penJoinLabel, 2, 2, Qt::AlignRight);
	mainLayout->addWidget(penJoinComboBox, 2, 3);
	mainLayout->addWidget(brushStyleLabel, 4, 2, Qt::AlignRight);
	mainLayout->addWidget(brushStyleComboBox, 4, 3);
	mainLayout->addWidget(otherOptionsLabel, 5, 0, Qt::AlignRight);
	mainLayout->addWidget(antialiasingCheckBox, 5, 1, 1, 1, Qt::AlignRight);
	mainLayout->addWidget(transformationsCheckBox, 5, 2, 1, 2, Qt::AlignRight);
	setLayout(mainLayout);

	shapeChanged();
	penChanged();
	brushChanged();
	antialiasingCheckBox->setChecked(true);

	setWindowTitle(tr("Basic Drawing"));
	}
	//! [10]

	//! [11]
	void Window::shapeChanged()
	{
	RenderArea::Shape shape = RenderArea::Shape(shapeComboBox->itemData(
	shapeComboBox->currentIndex(), IdRole).toInt());
	renderArea->setShape(shape);
	}
	//! [11]

	//! [12]
	void Window::penChanged()
	{
	int width = penWidthSpinBox->value();
	Qt::PenStyle style = Qt::PenStyle(penStyleComboBox->itemData(
	penStyleComboBox->currentIndex(), IdRole).toInt());
	Qt::PenCapStyle cap = Qt::PenCapStyle(penCapComboBox->itemData(
	penCapComboBox->currentIndex(), IdRole).toInt());
	Qt::PenJoinStyle join = Qt::PenJoinStyle(penJoinComboBox->itemData(
	penJoinComboBox->currentIndex(), IdRole).toInt());

	renderArea->setPen(QPen(Qt::blue, width, style, cap, join));
	}
	//! [12]

	//! [13]
	void Window::brushChanged()
	{
	Qt::BrushStyle style = Qt::BrushStyle(brushStyleComboBox->itemData(
	//! [13]
	brushStyleComboBox->currentIndex(), IdRole).toInt());

	//! [14]
	if (style == Qt::LinearGradientPattern) {
	QLinearGradient linearGradient(0, 0, 100, 100);
	linearGradient.setColorAt(0.0, Qt::white);
	linearGradient.setColorAt(0.2, Qt::green);
	linearGradient.setColorAt(1.0, Qt::black);
	renderArea->setBrush(linearGradient);
	//! [14] //! [15]
	} else if (style == Qt::RadialGradientPattern) {
	QRadialGradient radialGradient(50, 50, 50, 70, 70);
	radialGradient.setColorAt(0.0, Qt::white);
	radialGradient.setColorAt(0.2, Qt::green);
	radialGradient.setColorAt(1.0, Qt::black);
	renderArea->setBrush(radialGradient);
	} else if (style == Qt::ConicalGradientPattern) {
	QConicalGradient conicalGradient(50, 50, 150);
	conicalGradient.setColorAt(0.0, Qt::white);
	conicalGradient.setColorAt(0.2, Qt::green);
	conicalGradient.setColorAt(1.0, Qt::black);
	renderArea->setBrush(conicalGradient);
	//! [15] //! [16]
	} else if (style == Qt::TexturePattern) {
	renderArea->setBrush(QBrush(QPixmap(":/images/brick.png")));
	//! [16] //! [17]
	} else {
	renderArea->setBrush(QBrush(Qt::green, style));
	}
	}
	//! [17]