Long live Qt 4.5!

6 files changed, 450 insertions, 0 deletions

diff --git a/doc/src/snippets/draganddrop/draganddrop.pro b/doc/src/snippets/draganddrop/draganddrop.pro
new file mode 100644
index 0000000..67bc32b
--- /dev/null
+++ b/doc/src/snippets/draganddrop/draganddrop.pro
@@ -0,0 +1,5 @@
+HEADERS     = dragwidget.h \
+              mainwindow.h
+SOURCES     = dragwidget.cpp \
+              main.cpp \
+              mainwindow.cpp
diff --git a/doc/src/snippets/draganddrop/dragwidget.cpp b/doc/src/snippets/draganddrop/dragwidget.cpp
new file mode 100644
index 0000000..2fe3e53
--- /dev/null
+++ b/doc/src/snippets/draganddrop/dragwidget.cpp
@@ -0,0 +1,154 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the documentation 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 "dragwidget.h"
+
+DragWidget::DragWidget(QWidget *parent)
+    : QFrame(parent)
+{
+    setFrameStyle(QFrame::StyledPanel | QFrame::Sunken);
+    dragDropLabel = new QLabel("", this);
+    dragDropLabel->setAlignment(Qt::AlignHCenter);
+
+    QHBoxLayout *layout = new QHBoxLayout(this);
+    layout->addStretch(0);
+    layout->addWidget(dragDropLabel);
+    layout->addStretch(0);
+
+    setAcceptDrops(true);
+}
+
+// Accept all actions, but deal with them separately later.
+//! [0]
+void DragWidget::dragEnterEvent(QDragEnterEvent *event)
+{
+    event->acceptProposedAction();
+}
+//! [0]
+
+//! [1]
+void DragWidget::dropEvent(QDropEvent *event)
+{
+    if (event->source() == this && event->possibleActions() & Qt::MoveAction)
+        return;
+//! [1]
+
+//! [2]
+    if (event->proposedAction() == Qt::MoveAction) {
+        event->acceptProposedAction();
+        // Process the data from the event.
+//! [2]
+        emit dragResult(tr("The data was moved here."));
+//! [3]
+    } else if (event->proposedAction() == Qt::CopyAction) {
+        event->acceptProposedAction();
+        // Process the data from the event.
+//! [3]
+        emit dragResult(tr("The data was copied here."));
+//! [4]
+    } else {
+        // Ignore the drop.
+        return;
+    }
+//! [4]
+    // End of quote
+
+    emit mimeTypes(event->mimeData()->formats());
+    setData(event->mimeData()->formats()[0],
+            event->mimeData()->data(event->mimeData()->formats()[0]));
+//! [5]
+}
+//! [5]
+
+//! [6]
+void DragWidget::mousePressEvent(QMouseEvent *event)
+{
+    if (event->button() == Qt::LeftButton)
+        dragStartPosition = event->pos();
+}
+//! [6]
+
+//! [7]
+void DragWidget::mouseMoveEvent(QMouseEvent *event)
+{
+    if (!(event->buttons() & Qt::LeftButton))
+        return;
+    if ((event->pos() - dragStartPosition).manhattanLength()
+         < QApplication::startDragDistance())
+        return;
+
+    QDrag *drag = new QDrag(this);
+    QMimeData *mimeData = new QMimeData;
+
+    mimeData->setData(mimeType, data);
+    drag->setMimeData(mimeData);
+
+    Qt::DropAction dropAction = drag->exec(Qt::CopyAction | Qt::MoveAction);
+//! [7]
+
+    switch (dropAction) {
+        case Qt::CopyAction:
+            emit dragResult(tr("The text was copied."));
+            break;
+        case Qt::MoveAction:
+            emit dragResult(tr("The text was moved."));
+            break;
+        default:
+            emit dragResult(tr("Unknown action."));
+            break;
+    }
+//! [8]
+}
+//! [8]
+
+void DragWidget::setData(const QString &mimetype, const QByteArray &newData)
+{
+    mimeType = mimetype;
+    data = QByteArray(newData);
+
+    dragDropLabel->setText(tr("%1 bytes").arg(data.size()));
+
+    QStringList formats;
+    formats << mimetype;
+    emit mimeTypes(formats);
+}
diff --git a/doc/src/snippets/draganddrop/dragwidget.h b/doc/src/snippets/draganddrop/dragwidget.h
new file mode 100644
index 0000000..07fd091
--- /dev/null
+++ b/doc/src/snippets/draganddrop/dragwidget.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 documentation 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 DRAGWIDGET_H
+#define DRAGWIDGET_H
+
+#include <QByteArray>
+#include <QFrame>
+#include <QString>
+#include <QStringList>
+
+class QComboBox;
+class QFrame;
+class QLabel;
+class QTextBrowser;
+
+class DragWidget : public QFrame
+{
+    Q_OBJECT
+
+public:
+    DragWidget(QWidget *parent);
+    void setData(const QString &mimetype, const QByteArray &newData);
+
+signals:
+    void dragResult(const QString &actionText);
+    void mimeTypes(const QStringList &types);
+
+protected:
+    void dragEnterEvent(QDragEnterEvent *event);
+    void dropEvent(QDropEvent *event);
+    void mouseMoveEvent(QMouseEvent *event);
+    void mousePressEvent(QMouseEvent *event);
+
+private:
+    QByteArray data;
+    QLabel *dragDropLabel;
+    QPoint dragStartPosition;
+    QString mimeType;
+};
+
+#endif
diff --git a/doc/src/snippets/draganddrop/main.cpp b/doc/src/snippets/draganddrop/main.cpp
new file mode 100644
index 0000000..73a8bc6
--- /dev/null
+++ b/doc/src/snippets/draganddrop/main.cpp
@@ -0,0 +1,54 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the documentation 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 "mainwindow.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    MainWindow *window1 = new MainWindow;
+    MainWindow *window2 = new MainWindow;
+    window1->show();
+    window2->show();
+    return app.exec();
+}
diff --git a/doc/src/snippets/draganddrop/mainwindow.cpp b/doc/src/snippets/draganddrop/mainwindow.cpp
new file mode 100644
index 0000000..943b075
--- /dev/null
+++ b/doc/src/snippets/draganddrop/mainwindow.cpp
@@ -0,0 +1,85 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the documentation 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 "dragwidget.h"
+#include "mainwindow.h"
+
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
+{
+    QFrame *centralWidget = new QFrame(this);
+
+    QLabel *mimeTypeLabel = new QLabel(tr("MIME types:"), centralWidget);
+    mimeTypeCombo = new QComboBox(centralWidget);
+
+    QLabel *dataLabel = new QLabel(tr("Amount of data (bytes):"), centralWidget);
+    dragWidget = new DragWidget(centralWidget);
+
+    connect(dragWidget, SIGNAL(mimeTypes(const QStringList &)),
+            this, SLOT(setMimeTypes(const QStringList &)));
+    connect(dragWidget, SIGNAL(dragResult(const QString &)),
+            this, SLOT(setDragResult(const QString &)));
+
+    QVBoxLayout *mainLayout = new QVBoxLayout(centralWidget);
+    mainLayout->addWidget(mimeTypeLabel);
+    mainLayout->addWidget(mimeTypeCombo);
+    mainLayout->addSpacing(32);
+    mainLayout->addWidget(dataLabel);
+    mainLayout->addWidget(dragWidget);
+
+    statusBar();
+    dragWidget->setData(QString("text/plain"), QByteArray("Hello world"));
+    setCentralWidget(centralWidget);
+    setWindowTitle(tr("Drag and Drop"));
+}
+
+void MainWindow::setDragResult(const QString &actionText)
+{
+    statusBar()->showMessage(actionText);
+}
+
+void MainWindow::setMimeTypes(const QStringList &types)
+{
+    mimeTypeCombo->clear();
+    mimeTypeCombo->addItems(types);
+}
diff --git a/doc/src/snippets/draganddrop/mainwindow.h b/doc/src/snippets/draganddrop/mainwindow.h
new file mode 100644
index 0000000..789b54a
--- /dev/null
+++ b/doc/src/snippets/draganddrop/mainwindow.h
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the documentation 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>
+#include <QPixmap>
+#include <QPoint>
+
+class QComboBox;
+class QLabel;
+class QLineEdit;
+class QMouseEvent;
+class QTextEdit;
+class DragWidget;
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    MainWindow(QWidget *parent = 0);
+
+public slots:
+    void setDragResult(const QString &actionText);
+    void setMimeTypes(const QStringList &types);
+
+private:
+    QComboBox *mimeTypeCombo;
+    DragWidget *dragWidget;
+};
+
+#endif