window.cpp Example File
painting/basicdrawing/window.cpp
/****************************************************************************
**
** Copyright (C) 2005-2006 Trolltech AS. All rights reserved.
**
** This file is part of the documentation 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:
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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****************************************************************************/
#include <QtGui>
#include "renderarea.h"
#include "window.h"
const int IdRole = Qt::UserRole;
Window::Window()
{
renderArea = new RenderArea;
shapeComboBox = new QComboBox;
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("Polygon"), RenderArea::Polygon);
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);
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);
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)));
QHBoxLayout *checkBoxLayout = new QHBoxLayout;
checkBoxLayout->addWidget(antialiasingCheckBox);
checkBoxLayout->addWidget(transformationsCheckBox);
QGridLayout *mainLayout = new QGridLayout;
mainLayout->addWidget(renderArea, 0, 0, 1, 2);
mainLayout->addWidget(shapeLabel, 1, 0);
mainLayout->addWidget(shapeComboBox, 1, 1);
mainLayout->addWidget(penWidthLabel, 2, 0);
mainLayout->addWidget(penWidthSpinBox, 2, 1);
mainLayout->addWidget(penStyleLabel, 3, 0);
mainLayout->addWidget(penStyleComboBox, 3, 1);
mainLayout->addWidget(penCapLabel, 4, 0);
mainLayout->addWidget(penCapComboBox, 4, 1);
mainLayout->addWidget(penJoinLabel, 5, 0);
mainLayout->addWidget(penJoinComboBox, 5, 1);
mainLayout->addWidget(brushStyleLabel, 6, 0);
mainLayout->addWidget(brushStyleComboBox, 6, 1);
mainLayout->addLayout(checkBoxLayout, 7, 0, 1, 2);
setLayout(mainLayout);
shapeChanged();
penChanged();
brushChanged();
renderArea->setAntialiased(false);
renderArea->setTransformed(false);
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, 50, 50);
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));
}
}
