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<pre> /****************************************************************************
**
** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file. Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http:<span class="comment">//www.trolltech.com/products/qt/opensource.html</span>
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http:<span class="comment">//www.trolltech.com/products/qt/licensing.html or contact the</span>
** sales department at sales@trolltech.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
#include <QtGui>
#include "renderarea.h"
#include "window.h"
const int IdRole = Qt::UserRole;
Window::Window()
{
renderArea = new RenderArea;
shapeComboBox = new QComboBox;
shapeComboBox->addItem(tr("Polygon"), RenderArea::Polygon);
shapeComboBox->addItem(tr("Rectangle"), RenderArea::Rect);
shapeComboBox->addItem(tr("Round Rectangle"), RenderArea::RoundRect);
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);
penWidthSpinBox = new QSpinBox;
penWidthSpinBox->setRange(0, 20);
penWidthSpinBox->setSpecialValueText(tr("0 (cosmetic pen)"));
penWidthLabel = new QLabel(tr("Pen &Width:"));
penWidthLabel->setBuddy(penWidthSpinBox);
penStyleComboBox = new QComboBox;
penStyleComboBox->addItem(tr("Solid"), Qt::SolidLine);
penStyleComboBox->addItem(tr("Dash"), Qt::DashLine);
penStyleComboBox->addItem(tr("Dot"), Qt::DotLine);
penStyleComboBox->addItem(tr("Dash Dot"), Qt::DashDotLine);
penStyleComboBox->addItem(tr("Dash Dot Dot"), Qt::DashDotDotLine);
penStyleComboBox->addItem(tr("None"), 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);
brushStyleComboBox = new QComboBox;
brushStyleComboBox->addItem(tr("Linear Gradient"),
Qt::LinearGradientPattern);
brushStyleComboBox->addItem(tr("Radial Gradient"),
Qt::RadialGradientPattern);
brushStyleComboBox->addItem(tr("Conical Gradient"),
Qt::ConicalGradientPattern);
brushStyleComboBox->addItem(tr("Texture"), Qt::TexturePattern);
brushStyleComboBox->addItem(tr("Solid"), Qt::SolidPattern);
brushStyleComboBox->addItem(tr("Horizontal"), Qt::HorPattern);
brushStyleComboBox->addItem(tr("Vertical"), Qt::VerPattern);
brushStyleComboBox->addItem(tr("Cross"), Qt::CrossPattern);
brushStyleComboBox->addItem(tr("Backward Diagonal"), Qt::BDiagPattern);
brushStyleComboBox->addItem(tr("Forward Diagonal"), Qt::FDiagPattern);
brushStyleComboBox->addItem(tr("Diagonal Cross"), Qt::DiagCrossPattern);
brushStyleComboBox->addItem(tr("Dense 1"), Qt::Dense1Pattern);
brushStyleComboBox->addItem(tr("Dense 2"), Qt::Dense2Pattern);
brushStyleComboBox->addItem(tr("Dense 3"), Qt::Dense3Pattern);
brushStyleComboBox->addItem(tr("Dense 4"), Qt::Dense4Pattern);
brushStyleComboBox->addItem(tr("Dense 5"), Qt::Dense5Pattern);
brushStyleComboBox->addItem(tr("Dense 6"), Qt::Dense6Pattern);
brushStyleComboBox->addItem(tr("Dense 7"), Qt::Dense7Pattern);
brushStyleComboBox->addItem(tr("None"), Qt::NoBrush);
brushStyleLabel = new QLabel(tr("&Brush Style:"));
brushStyleLabel->setBuddy(brushStyleComboBox);
otherOptionsLabel = new QLabel(tr("Other Options:"));
antialiasingCheckBox = new QCheckBox(tr("&Antialiasing"));
transformationsCheckBox = new QCheckBox(tr("&Transformations"));
connect(shapeComboBox, SIGNAL(activated(int)),
this, SLOT(shapeChanged()));
connect(penWidthSpinBox, SIGNAL(valueChanged(int)),
this, SLOT(penChanged()));
connect(penStyleComboBox, SIGNAL(activated(int)),
this, SLOT(penChanged()));
connect(penCapComboBox, SIGNAL(activated(int)),
this, SLOT(penChanged()));
connect(penJoinComboBox, SIGNAL(activated(int)),
this, SLOT(penChanged()));
connect(brushStyleComboBox, SIGNAL(activated(int)),
this, SLOT(brushChanged()));
connect(antialiasingCheckBox, SIGNAL(toggled(bool)),
renderArea, SLOT(setAntialiased(bool)));
connect(transformationsCheckBox, SIGNAL(toggled(bool)),
renderArea, SLOT(setTransformed(bool)));
QGridLayout *mainLayout = new QGridLayout;
mainLayout->setColumnStretch(0, 1);
mainLayout->setColumnStretch(3, 1);
mainLayout->addWidget(renderArea, 0, 0, 1, 4);
mainLayout->setRowMinimumHeight(1, 6);
mainLayout->addWidget(shapeLabel, 2, 1, Qt::AlignRight);
mainLayout->addWidget(shapeComboBox, 2, 2);
mainLayout->addWidget(penWidthLabel, 3, 1, Qt::AlignRight);
mainLayout->addWidget(penWidthSpinBox, 3, 2);
mainLayout->addWidget(penStyleLabel, 4, 1, Qt::AlignRight);
mainLayout->addWidget(penStyleComboBox, 4, 2);
mainLayout->addWidget(penCapLabel, 5, 1, Qt::AlignRight);
mainLayout->addWidget(penCapComboBox, 5, 2);
mainLayout->addWidget(penJoinLabel, 6, 1, Qt::AlignRight);
mainLayout->addWidget(penJoinComboBox, 6, 2);
mainLayout->addWidget(brushStyleLabel, 7, 1, Qt::AlignRight);
mainLayout->addWidget(brushStyleComboBox, 7, 2);
mainLayout->setRowMinimumHeight(8, 6);
mainLayout->addWidget(otherOptionsLabel, 9, 1, Qt::AlignRight);
mainLayout->addWidget(antialiasingCheckBox, 9, 2);
mainLayout->addWidget(transformationsCheckBox, 10, 2);
setLayout(mainLayout);
shapeChanged();
penChanged();
brushChanged();
antialiasingCheckBox->setChecked(true);
setWindowTitle(tr("Basic Drawing"));
}
void Window::shapeChanged()
{
RenderArea::Shape shape = RenderArea::Shape(shapeComboBox->itemData(
shapeComboBox->currentIndex(), IdRole).toInt());
renderArea->setShape(shape);
}
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));
}
void Window::brushChanged()
{
Qt::BrushStyle style = Qt::BrushStyle(brushStyleComboBox->itemData(
brushStyleComboBox->currentIndex(), IdRole).toInt());
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);
} 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);
} else if (style == Qt::TexturePattern) {
renderArea->setBrush(QBrush(QPixmap(":/images/brick.png")));
} else {
renderArea->setBrush(QBrush(Qt::green, style));
}
}</pre>
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