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authorLars Knoll <lars.knoll@nokia.com>2009-03-23 09:34:13 (GMT)
committerSimon Hausmann <simon.hausmann@nokia.com>2009-03-23 09:34:13 (GMT)
commit67ad0519fd165acee4a4d2a94fa502e9e4847bd0 (patch)
tree1dbf50b3dff8d5ca7e9344733968c72704eb15ff /examples/itemviews/pixelator
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Long live Qt!
Diffstat (limited to 'examples/itemviews/pixelator')
-rw-r--r--examples/itemviews/pixelator/imagemodel.cpp92
-rw-r--r--examples/itemviews/pixelator/imagemodel.h69
-rw-r--r--examples/itemviews/pixelator/images.qrc5
-rw-r--r--examples/itemviews/pixelator/images/qt.pngbin0 -> 656 bytes
-rw-r--r--examples/itemviews/pixelator/main.cpp55
-rw-r--r--examples/itemviews/pixelator/mainwindow.cpp245
-rw-r--r--examples/itemviews/pixelator/mainwindow.h75
-rw-r--r--examples/itemviews/pixelator/pixelator.pro14
-rw-r--r--examples/itemviews/pixelator/pixeldelegate.cpp108
-rw-r--r--examples/itemviews/pixelator/pixeldelegate.h80
10 files changed, 743 insertions, 0 deletions
diff --git a/examples/itemviews/pixelator/imagemodel.cpp b/examples/itemviews/pixelator/imagemodel.cpp
new file mode 100644
index 0000000..ea42b62
--- /dev/null
+++ b/examples/itemviews/pixelator/imagemodel.cpp
@@ -0,0 +1,92 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "imagemodel.h"
+
+//! [0]
+ImageModel::ImageModel(QObject *parent)
+ : QAbstractTableModel(parent)
+{
+}
+//! [0]
+
+//! [1]
+void ImageModel::setImage(const QImage &image)
+{
+ modelImage = image;
+ reset();
+}
+//! [1]
+
+//! [2]
+int ImageModel::rowCount(const QModelIndex & /* parent */) const
+{
+ return modelImage.height();
+}
+
+int ImageModel::columnCount(const QModelIndex & /* parent */) const
+//! [2] //! [3]
+{
+ return modelImage.width();
+}
+//! [3]
+
+//! [4]
+QVariant ImageModel::data(const QModelIndex &index, int role) const
+{
+ if (!index.isValid() || role != Qt::DisplayRole)
+ return QVariant();
+ return qGray(modelImage.pixel(index.column(), index.row()));
+}
+//! [4]
+
+//! [5]
+QVariant ImageModel::headerData(int /* section */,
+ Qt::Orientation /* orientation */,
+ int role) const
+{
+ if (role == Qt::SizeHintRole)
+ return QSize(1, 1);
+ return QVariant();
+}
+//! [5]
diff --git a/examples/itemviews/pixelator/imagemodel.h b/examples/itemviews/pixelator/imagemodel.h
new file mode 100644
index 0000000..e92115a
--- /dev/null
+++ b/examples/itemviews/pixelator/imagemodel.h
@@ -0,0 +1,69 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef IMAGEMODEL_H
+#define IMAGEMODEL_H
+
+#include <QAbstractTableModel>
+#include <QImage>
+
+//! [0]
+class ImageModel : public QAbstractTableModel
+{
+ Q_OBJECT
+
+public:
+ ImageModel(QObject *parent = 0);
+
+ void setImage(const QImage &image);
+
+ int rowCount(const QModelIndex &parent = QModelIndex()) const;
+ int columnCount(const QModelIndex &parent = QModelIndex()) const;
+
+ QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
+ QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
+
+private:
+ QImage modelImage;
+};
+//! [0]
+
+#endif
diff --git a/examples/itemviews/pixelator/images.qrc b/examples/itemviews/pixelator/images.qrc
new file mode 100644
index 0000000..c105e13
--- /dev/null
+++ b/examples/itemviews/pixelator/images.qrc
@@ -0,0 +1,5 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+ <file>images/qt.png</file>
+</qresource>
+</RCC>
diff --git a/examples/itemviews/pixelator/images/qt.png b/examples/itemviews/pixelator/images/qt.png
new file mode 100644
index 0000000..a2c9c77
--- /dev/null
+++ b/examples/itemviews/pixelator/images/qt.png
Binary files differ
diff --git a/examples/itemviews/pixelator/main.cpp b/examples/itemviews/pixelator/main.cpp
new file mode 100644
index 0000000..7a30347
--- /dev/null
+++ b/examples/itemviews/pixelator/main.cpp
@@ -0,0 +1,55 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QApplication>
+
+#include "mainwindow.h"
+
+int main(int argc, char *argv[])
+{
+ Q_INIT_RESOURCE(images);
+
+ QApplication app(argc, argv);
+ MainWindow window;
+ window.show();
+ window.openImage(":/images/qt.png");
+ return app.exec();
+}
diff --git a/examples/itemviews/pixelator/mainwindow.cpp b/examples/itemviews/pixelator/mainwindow.cpp
new file mode 100644
index 0000000..a2b98cf
--- /dev/null
+++ b/examples/itemviews/pixelator/mainwindow.cpp
@@ -0,0 +1,245 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "imagemodel.h"
+#include "mainwindow.h"
+#include "pixeldelegate.h"
+
+//! [0]
+MainWindow::MainWindow()
+{
+//! [0]
+ currentPath = QDir::homePath();
+ model = new ImageModel(this);
+
+ QWidget *centralWidget = new QWidget;
+
+//! [1]
+ view = new QTableView;
+ view->setShowGrid(false);
+ view->horizontalHeader()->hide();
+ view->verticalHeader()->hide();
+ view->horizontalHeader()->setMinimumSectionSize(1);
+ view->verticalHeader()->setMinimumSectionSize(1);
+ view->setModel(model);
+//! [1]
+
+//! [2]
+ PixelDelegate *delegate = new PixelDelegate(this);
+ view->setItemDelegate(delegate);
+//! [2]
+
+//! [3]
+ QLabel *pixelSizeLabel = new QLabel(tr("Pixel size:"));
+ QSpinBox *pixelSizeSpinBox = new QSpinBox;
+ pixelSizeSpinBox->setMinimum(4);
+ pixelSizeSpinBox->setMaximum(32);
+ pixelSizeSpinBox->setValue(12);
+//! [3]
+
+ QMenu *fileMenu = new QMenu(tr("&File"), this);
+ QAction *openAction = fileMenu->addAction(tr("&Open..."));
+ openAction->setShortcut(QKeySequence(tr("Ctrl+O")));
+
+ printAction = fileMenu->addAction(tr("&Print..."));
+ printAction->setEnabled(false);
+ printAction->setShortcut(QKeySequence(tr("Ctrl+P")));
+
+ QAction *quitAction = fileMenu->addAction(tr("E&xit"));
+ quitAction->setShortcut(QKeySequence(tr("Ctrl+Q")));
+
+ QMenu *helpMenu = new QMenu(tr("&Help"), this);
+ QAction *aboutAction = helpMenu->addAction(tr("&About"));
+
+ menuBar()->addMenu(fileMenu);
+ menuBar()->addSeparator();
+ menuBar()->addMenu(helpMenu);
+
+ connect(openAction, SIGNAL(triggered()), this, SLOT(chooseImage()));
+ connect(printAction, SIGNAL(triggered()), this, SLOT(printImage()));
+ connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
+ connect(aboutAction, SIGNAL(triggered()), this, SLOT(showAboutBox()));
+//! [4]
+ connect(pixelSizeSpinBox, SIGNAL(valueChanged(int)),
+ delegate, SLOT(setPixelSize(int)));
+ connect(pixelSizeSpinBox, SIGNAL(valueChanged(int)),
+ this, SLOT(updateView()));
+//! [4]
+
+ QHBoxLayout *controlsLayout = new QHBoxLayout;
+ controlsLayout->addWidget(pixelSizeLabel);
+ controlsLayout->addWidget(pixelSizeSpinBox);
+ controlsLayout->addStretch(1);
+
+ QVBoxLayout *mainLayout = new QVBoxLayout;
+ mainLayout->addWidget(view);
+ mainLayout->addLayout(controlsLayout);
+ centralWidget->setLayout(mainLayout);
+
+ setCentralWidget(centralWidget);
+
+ setWindowTitle(tr("Pixelator"));
+ resize(640, 480);
+//! [5]
+}
+//! [5]
+
+void MainWindow::chooseImage()
+{
+ QString fileName = QFileDialog::getOpenFileName(this,
+ tr("Choose an image"), currentPath, "*");
+
+ if (!fileName.isEmpty())
+ openImage(fileName);
+}
+
+void MainWindow::openImage(const QString &fileName)
+{
+ QImage image;
+
+ if (image.load(fileName)) {
+ model->setImage(image);
+ if (!fileName.startsWith(":/")) {
+ currentPath = fileName;
+ setWindowTitle(tr("%1 - Pixelator").arg(currentPath));
+ }
+
+ printAction->setEnabled(true);
+ updateView();
+ }
+}
+
+void MainWindow::printImage()
+{
+#ifndef QT_NO_PRINTER
+ if (model->rowCount(QModelIndex())*model->columnCount(QModelIndex())
+ > 90000) {
+ QMessageBox::StandardButton answer;
+ answer = QMessageBox::question(this, tr("Large Image Size"),
+ tr("The printed image may be very large. Are you sure that "
+ "you want to print it?"),
+ QMessageBox::Yes | QMessageBox::No);
+ if (answer == QMessageBox::No)
+ return;
+ }
+
+ QPrinter printer(QPrinter::HighResolution);
+
+ QPrintDialog *dlg = new QPrintDialog(&printer, this);
+ dlg->setWindowTitle(tr("Print Image"));
+
+ if (dlg->exec() != QDialog::Accepted)
+ return;
+
+ QPainter painter;
+ painter.begin(&printer);
+
+ int rows = model->rowCount(QModelIndex());
+ int columns = model->columnCount(QModelIndex());
+ int sourceWidth = (columns+1) * ItemSize;
+ int sourceHeight = (rows+1) * ItemSize;
+
+ painter.save();
+
+ double xscale = printer.pageRect().width()/double(sourceWidth);
+ double yscale = printer.pageRect().height()/double(sourceHeight);
+ double scale = qMin(xscale, yscale);
+
+ painter.translate(printer.paperRect().x() + printer.pageRect().width()/2,
+ printer.paperRect().y() + printer.pageRect().height()/2);
+ painter.scale(scale, scale);
+ painter.translate(-sourceWidth/2, -sourceHeight/2);
+
+ QStyleOptionViewItem option;
+ QModelIndex parent = QModelIndex();
+
+ QProgressDialog progress(tr("Printing..."), tr("Cancel"), 0, rows, this);
+ progress.setWindowModality(Qt::ApplicationModal);
+ float y = ItemSize/2;
+
+ for (int row = 0; row < rows; ++row) {
+ progress.setValue(row);
+ qApp->processEvents();
+ if (progress.wasCanceled())
+ break;
+
+ float x = ItemSize/2;
+
+ for (int column = 0; column < columns; ++column) {
+ option.rect = QRect(int(x), int(y), ItemSize, ItemSize);
+ view->itemDelegate()->paint(&painter, option,
+ model->index(row, column, parent));
+ x = x + ItemSize;
+ }
+ y = y + ItemSize;
+ }
+ progress.setValue(rows);
+
+ painter.restore();
+ painter.end();
+
+ if (progress.wasCanceled()) {
+ QMessageBox::information(this, tr("Printing canceled"),
+ tr("The printing process was canceled."), QMessageBox::Cancel);
+ }
+#else
+ QMessageBox::information(this, tr("Printing canceled"),
+ tr("Printing is not supported on this Qt build"), QMessageBox::Cancel);
+#endif
+}
+
+void MainWindow::showAboutBox()
+{
+ QMessageBox::about(this, tr("About the Pixelator example"),
+ tr("This example demonstrates how a standard view and a custom\n"
+ "delegate can be used to produce a specialized representation\n"
+ "of data in a simple custom model."));
+}
+
+//! [6]
+void MainWindow::updateView()
+{
+ view->resizeColumnsToContents();
+ view->resizeRowsToContents();
+}
+//! [6]
diff --git a/examples/itemviews/pixelator/mainwindow.h b/examples/itemviews/pixelator/mainwindow.h
new file mode 100644
index 0000000..df9510e
--- /dev/null
+++ b/examples/itemviews/pixelator/mainwindow.h
@@ -0,0 +1,75 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+
+class ImageModel;
+QT_BEGIN_NAMESPACE
+class QAction;
+class QTableView;
+QT_END_NAMESPACE
+
+class MainWindow : public QMainWindow
+{
+ Q_OBJECT
+
+public:
+ MainWindow();
+
+ void openImage(const QString &fileName);
+
+public slots:
+ void chooseImage();
+ void printImage();
+ void showAboutBox();
+ void updateView();
+
+private:
+ ImageModel *model;
+ QAction *printAction;
+ QString currentPath;
+ QTableView *view;
+};
+
+#endif
diff --git a/examples/itemviews/pixelator/pixelator.pro b/examples/itemviews/pixelator/pixelator.pro
new file mode 100644
index 0000000..dc05296
--- /dev/null
+++ b/examples/itemviews/pixelator/pixelator.pro
@@ -0,0 +1,14 @@
+HEADERS = imagemodel.h \
+ mainwindow.h \
+ pixeldelegate.h
+SOURCES = imagemodel.cpp \
+ main.cpp \
+ mainwindow.cpp \
+ pixeldelegate.cpp
+RESOURCES += images.qrc
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/itemviews/pixelator
+sources.files = $$SOURCES $$HEADERS $$RESOURCES *.pro images
+sources.path = $$[QT_INSTALL_EXAMPLES]/itemviews/pixelator
+INSTALLS += target sources
diff --git a/examples/itemviews/pixelator/pixeldelegate.cpp b/examples/itemviews/pixelator/pixeldelegate.cpp
new file mode 100644
index 0000000..496b365
--- /dev/null
+++ b/examples/itemviews/pixelator/pixeldelegate.cpp
@@ -0,0 +1,108 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "pixeldelegate.h"
+
+//! [0]
+PixelDelegate::PixelDelegate(QObject *parent)
+ : QAbstractItemDelegate(parent)
+{
+ pixelSize = 12;
+}
+//! [0]
+
+//! [1]
+void PixelDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
+ const QModelIndex &index) const
+{
+//! [2]
+ if (option.state & QStyle::State_Selected)
+ painter->fillRect(option.rect, option.palette.highlight());
+//! [1]
+
+//! [3]
+ int size = qMin(option.rect.width(), option.rect.height());
+//! [3] //! [4]
+ int brightness = index.model()->data(index, Qt::DisplayRole).toInt();
+ double radius = (size/2.0) - (brightness/255.0 * size/2.0);
+ if (radius == 0.0)
+ return;
+//! [4]
+
+//! [5]
+ painter->save();
+//! [5] //! [6]
+ painter->setRenderHint(QPainter::Antialiasing, true);
+//! [6] //! [7]
+ painter->setPen(Qt::NoPen);
+//! [7] //! [8]
+ if (option.state & QStyle::State_Selected)
+//! [8] //! [9]
+ painter->setBrush(option.palette.highlightedText());
+ else
+//! [2]
+ painter->setBrush(QBrush(Qt::black));
+//! [9]
+
+//! [10]
+ painter->drawEllipse(QRectF(option.rect.x() + option.rect.width()/2 - radius,
+ option.rect.y() + option.rect.height()/2 - radius,
+ 2*radius, 2*radius));
+ painter->restore();
+}
+//! [10]
+
+//! [11]
+QSize PixelDelegate::sizeHint(const QStyleOptionViewItem & /* option */,
+ const QModelIndex & /* index */) const
+{
+ return QSize(pixelSize, pixelSize);
+}
+//! [11]
+
+//! [12]
+void PixelDelegate::setPixelSize(int size)
+{
+ pixelSize = size;
+}
+//! [12]
diff --git a/examples/itemviews/pixelator/pixeldelegate.h b/examples/itemviews/pixelator/pixeldelegate.h
new file mode 100644
index 0000000..b38e470
--- /dev/null
+++ b/examples/itemviews/pixelator/pixeldelegate.h
@@ -0,0 +1,80 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef PIXELDELEGATE_H
+#define PIXELDELEGATE_H
+
+#include <QAbstractItemDelegate>
+#include <QFontMetrics>
+#include <QModelIndex>
+#include <QSize>
+
+QT_BEGIN_NAMESPACE
+class QAbstractItemModel;
+class QObject;
+class QPainter;
+QT_END_NAMESPACE
+
+static const int ItemSize = 256;
+
+//! [0]
+class PixelDelegate : public QAbstractItemDelegate
+{
+ Q_OBJECT
+
+public:
+ PixelDelegate(QObject *parent = 0);
+
+ void paint(QPainter *painter, const QStyleOptionViewItem &option,
+ const QModelIndex &index) const;
+
+ QSize sizeHint(const QStyleOptionViewItem &option,
+ const QModelIndex &index ) const;
+
+public slots:
+ void setPixelSize(int size);
+
+private:
+ int pixelSize;
+};
+//! [0]
+
+#endif