Long live Qt for S60!

4 files changed, 449 insertions, 0 deletions

diff --git a/examples/widgets/imageviewer/imageviewer.cpp b/examples/widgets/imageviewer/imageviewer.cpp
new file mode 100644
index 0000000..39d1b35
--- /dev/null
+++ b/examples/widgets/imageviewer/imageviewer.cpp
@@ -0,0 +1,278 @@
+/****************************************************************************
+**
+** 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 "imageviewer.h"
+
+//! [0]
+ImageViewer::ImageViewer()
+{
+    imageLabel = new QLabel;
+    imageLabel->setBackgroundRole(QPalette::Base);
+    imageLabel->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);
+    imageLabel->setScaledContents(true);
+
+    scrollArea = new QScrollArea;
+    scrollArea->setBackgroundRole(QPalette::Dark);
+    scrollArea->setWidget(imageLabel);
+    setCentralWidget(scrollArea);
+
+    createActions();
+    createMenus();
+
+    setWindowTitle(tr("Image Viewer"));
+    resize(500, 400);
+}
+//! [0]
+
+//! [1]
+void ImageViewer::open()
+//! [1] //! [2]
+{
+    QString fileName = QFileDialog::getOpenFileName(this,
+                                    tr("Open File"), QDir::currentPath());
+    if (!fileName.isEmpty()) {
+        QImage image(fileName);
+        if (image.isNull()) {
+            QMessageBox::information(this, tr("Image Viewer"),
+                                     tr("Cannot load %1.").arg(fileName));
+            return;
+        }
+//! [2] //! [3]
+        imageLabel->setPixmap(QPixmap::fromImage(image));
+//! [3] //! [4]
+        scaleFactor = 1.0;
+
+        printAct->setEnabled(true);
+        fitToWindowAct->setEnabled(true);
+        updateActions();
+
+        if (!fitToWindowAct->isChecked())
+            imageLabel->adjustSize();
+    }
+}
+//! [4]
+
+//! [5]
+void ImageViewer::print()
+//! [5] //! [6]
+{
+    Q_ASSERT(imageLabel->pixmap());
+#ifndef QT_NO_PRINTER
+//! [6] //! [7]
+    QPrintDialog dialog(&printer, this);
+//! [7] //! [8]
+    if (dialog.exec()) {
+        QPainter painter(&printer);
+        QRect rect = painter.viewport();
+        QSize size = imageLabel->pixmap()->size();
+        size.scale(rect.size(), Qt::KeepAspectRatio);
+        painter.setViewport(rect.x(), rect.y(), size.width(), size.height());
+        painter.setWindow(imageLabel->pixmap()->rect());
+        painter.drawPixmap(0, 0, *imageLabel->pixmap());
+    }
+#endif
+}
+//! [8]
+
+//! [9]
+void ImageViewer::zoomIn()
+//! [9] //! [10]
+{
+    scaleImage(1.25);
+}
+
+void ImageViewer::zoomOut()
+{
+    scaleImage(0.8);
+}
+
+//! [10] //! [11]
+void ImageViewer::normalSize()
+//! [11] //! [12]
+{
+    imageLabel->adjustSize();
+    scaleFactor = 1.0;
+}
+//! [12]
+
+//! [13]
+void ImageViewer::fitToWindow()
+//! [13] //! [14]
+{
+    bool fitToWindow = fitToWindowAct->isChecked();
+    scrollArea->setWidgetResizable(fitToWindow);
+    if (!fitToWindow) {
+        normalSize();
+    }
+    updateActions();
+}
+//! [14]
+
+
+//! [15]
+void ImageViewer::about()
+//! [15] //! [16]
+{
+    QMessageBox::about(this, tr("About Image Viewer"),
+            tr("<p>The <b>Image Viewer</b> example shows how to combine QLabel "
+               "and QScrollArea to display an image. QLabel is typically used "
+               "for displaying a text, but it can also display an image. "
+               "QScrollArea provides a scrolling view around another widget. "
+               "If the child widget exceeds the size of the frame, QScrollArea "
+               "automatically provides scroll bars. </p><p>The example "
+               "demonstrates how QLabel's ability to scale its contents "
+               "(QLabel::scaledContents), and QScrollArea's ability to "
+               "automatically resize its contents "
+               "(QScrollArea::widgetResizable), can be used to implement "
+               "zooming and scaling features. </p><p>In addition the example "
+               "shows how to use QPainter to print an image.</p>"));
+}
+//! [16]
+
+//! [17]
+void ImageViewer::createActions()
+//! [17] //! [18]
+{
+    openAct = new QAction(tr("&Open..."), this);
+    openAct->setShortcut(tr("Ctrl+O"));
+    connect(openAct, SIGNAL(triggered()), this, SLOT(open()));
+
+    printAct = new QAction(tr("&Print..."), this);
+    printAct->setShortcut(tr("Ctrl+P"));
+    printAct->setEnabled(false);
+    connect(printAct, SIGNAL(triggered()), this, SLOT(print()));
+
+    exitAct = new QAction(tr("E&xit"), this);
+    exitAct->setShortcut(tr("Ctrl+Q"));
+    connect(exitAct, SIGNAL(triggered()), this, SLOT(close()));
+
+    zoomInAct = new QAction(tr("Zoom &In (25%)"), this);
+    zoomInAct->setShortcut(tr("Ctrl++"));
+    zoomInAct->setEnabled(false);
+    connect(zoomInAct, SIGNAL(triggered()), this, SLOT(zoomIn()));
+
+    zoomOutAct = new QAction(tr("Zoom &Out (25%)"), this);
+    zoomOutAct->setShortcut(tr("Ctrl+-"));
+    zoomOutAct->setEnabled(false);
+    connect(zoomOutAct, SIGNAL(triggered()), this, SLOT(zoomOut()));
+
+    normalSizeAct = new QAction(tr("&Normal Size"), this);
+    normalSizeAct->setShortcut(tr("Ctrl+S"));
+    normalSizeAct->setEnabled(false);
+    connect(normalSizeAct, SIGNAL(triggered()), this, SLOT(normalSize()));
+
+    fitToWindowAct = new QAction(tr("&Fit to Window"), this);
+    fitToWindowAct->setEnabled(false);
+    fitToWindowAct->setCheckable(true);
+    fitToWindowAct->setShortcut(tr("Ctrl+F"));
+    connect(fitToWindowAct, SIGNAL(triggered()), this, SLOT(fitToWindow()));
+
+    aboutAct = new QAction(tr("&About"), this);
+    connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));
+
+    aboutQtAct = new QAction(tr("About &Qt"), this);
+    connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
+}
+//! [18]
+
+//! [19]
+void ImageViewer::createMenus()
+//! [19] //! [20]
+{
+    fileMenu = new QMenu(tr("&File"), this);
+    fileMenu->addAction(openAct);
+    fileMenu->addAction(printAct);
+    fileMenu->addSeparator();
+    fileMenu->addAction(exitAct);
+
+    viewMenu = new QMenu(tr("&View"), this);
+    viewMenu->addAction(zoomInAct);
+    viewMenu->addAction(zoomOutAct);
+    viewMenu->addAction(normalSizeAct);
+    viewMenu->addSeparator();
+    viewMenu->addAction(fitToWindowAct);
+
+    helpMenu = new QMenu(tr("&Help"), this);
+    helpMenu->addAction(aboutAct);
+    helpMenu->addAction(aboutQtAct);
+
+    menuBar()->addMenu(fileMenu);
+    menuBar()->addMenu(viewMenu);
+    menuBar()->addMenu(helpMenu);
+}
+//! [20]
+
+//! [21]
+void ImageViewer::updateActions()
+//! [21] //! [22]
+{
+    zoomInAct->setEnabled(!fitToWindowAct->isChecked());
+    zoomOutAct->setEnabled(!fitToWindowAct->isChecked());
+    normalSizeAct->setEnabled(!fitToWindowAct->isChecked());
+}
+//! [22]
+
+//! [23]
+void ImageViewer::scaleImage(double factor)
+//! [23] //! [24]
+{
+    Q_ASSERT(imageLabel->pixmap());
+    scaleFactor *= factor;
+    imageLabel->resize(scaleFactor * imageLabel->pixmap()->size());
+
+    adjustScrollBar(scrollArea->horizontalScrollBar(), factor);
+    adjustScrollBar(scrollArea->verticalScrollBar(), factor);
+
+    zoomInAct->setEnabled(scaleFactor < 3.0);
+    zoomOutAct->setEnabled(scaleFactor > 0.333);
+}
+//! [24]
+
+//! [25]
+void ImageViewer::adjustScrollBar(QScrollBar *scrollBar, double factor)
+//! [25] //! [26]
+{
+    scrollBar->setValue(int(factor * scrollBar->value()
+                            + ((factor - 1) * scrollBar->pageStep()/2)));
+}
+//! [26]
diff --git a/examples/widgets/imageviewer/imageviewer.h b/examples/widgets/imageviewer/imageviewer.h
new file mode 100644
index 0000000..b84f7d5
--- /dev/null
+++ b/examples/widgets/imageviewer/imageviewer.h
@@ -0,0 +1,104 @@
+/****************************************************************************
+**
+** 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 IMAGEVIEWER_H
+#define IMAGEVIEWER_H
+
+#include <QMainWindow>
+#include <QPrinter>
+
+QT_BEGIN_NAMESPACE
+class QAction;
+class QLabel;
+class QMenu;
+class QScrollArea;
+class QScrollBar;
+QT_END_NAMESPACE
+
+//! [0]
+class ImageViewer : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    ImageViewer();
+
+private slots:
+    void open();
+    void print();
+    void zoomIn();
+    void zoomOut();
+    void normalSize();
+    void fitToWindow();
+    void about();
+
+private:
+    void createActions();
+    void createMenus();
+    void updateActions();
+    void scaleImage(double factor);
+    void adjustScrollBar(QScrollBar *scrollBar, double factor);
+
+    QLabel *imageLabel;
+    QScrollArea *scrollArea;
+    double scaleFactor;
+
+#ifndef QT_NO_PRINTER
+    QPrinter printer;
+#endif
+
+    QAction *openAct;
+    QAction *printAct;
+    QAction *exitAct;
+    QAction *zoomInAct;
+    QAction *zoomOutAct;
+    QAction *normalSizeAct;
+    QAction *fitToWindowAct;
+    QAction *aboutAct;
+    QAction *aboutQtAct;
+
+    QMenu *fileMenu;
+    QMenu *viewMenu;
+    QMenu *helpMenu;
+};
+//! [0]
+
+#endif
diff --git a/examples/widgets/imageviewer/imageviewer.pro b/examples/widgets/imageviewer/imageviewer.pro
new file mode 100644
index 0000000..597d95b
--- /dev/null
+++ b/examples/widgets/imageviewer/imageviewer.pro
@@ -0,0 +1,15 @@
+HEADERS       = imageviewer.h
+SOURCES       = imageviewer.cpp \
+                main.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/widgets/imageviewer
+sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS imageviewer.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/widgets/imageviewer
+INSTALLS += target sources
+
+include($$QT_SOURCE_TREE/examples/examplebase.pri)
+
+wince*: {
+   DEPLOYMENT_PLUGIN += qjpeg qmng qgif
+}
diff --git a/examples/widgets/imageviewer/main.cpp b/examples/widgets/imageviewer/main.cpp
new file mode 100644
index 0000000..090580c
--- /dev/null
+++ b/examples/widgets/imageviewer/main.cpp
@@ -0,0 +1,52 @@
+/****************************************************************************
+**
+** 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 "imageviewer.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    ImageViewer imageViewer;
+    imageViewer.show();
+    return app.exec();
+}