Long live Qt!

4 files changed, 254 insertions, 0 deletions

diff --git a/doc/src/snippets/porting4-dropevents/main.cpp b/doc/src/snippets/porting4-dropevents/main.cpp
new file mode 100644
index 0000000..a54e0b7
--- /dev/null
+++ b/doc/src/snippets/porting4-dropevents/main.cpp
@@ -0,0 +1,53 @@
+/****************************************************************************
+**
+** 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 "window.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+    MyWidget window;
+    window.show();
+    return app.exec();
+}
diff --git a/doc/src/snippets/porting4-dropevents/porting4-dropevents.pro b/doc/src/snippets/porting4-dropevents/porting4-dropevents.pro
new file mode 100644
index 0000000..6283406
--- /dev/null
+++ b/doc/src/snippets/porting4-dropevents/porting4-dropevents.pro
@@ -0,0 +1,3 @@
+HEADERS     = window.h
+SOURCES     = main.cpp \
+              window.cpp
diff --git a/doc/src/snippets/porting4-dropevents/window.cpp b/doc/src/snippets/porting4-dropevents/window.cpp
new file mode 100644
index 0000000..853687a
--- /dev/null
+++ b/doc/src/snippets/porting4-dropevents/window.cpp
@@ -0,0 +1,125 @@
+/****************************************************************************
+**
+** 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 "window.h"
+
+MyWidget::MyWidget(QWidget *parent)
+    : QWidget(parent)
+{
+    QLabel *textLabel = new QLabel(tr("Data:"), this);
+    dataLabel = new QLabel(this);
+    dataLabel->setFixedSize(200, 200);
+
+    QVBoxLayout *layout = new QVBoxLayout(this);
+    layout->addWidget(textLabel);
+    layout->addWidget(dataLabel);
+
+    setAcceptDrops(true);
+    setWindowTitle(tr("Drop Events"));
+}
+
+//! [0]
+void MyWidget::dragEnterEvent(QDragEnterEvent *event)
+{
+    if (event->mimeData()->hasText() || event->mimeData()->hasImage())
+        event->acceptProposedAction();
+}
+//! [0]
+
+//! [1]
+void MyWidget::dropEvent(QDropEvent *event)
+{
+    if (event->mimeData()->hasText())
+        dataLabel->setText(event->mimeData()->text());
+    else if (event->mimeData()->hasImage()) {
+        QVariant imageData = event->mimeData()->imageData();
+        dataLabel->setPixmap(qvariant_cast<QPixmap>(imageData));
+    }
+    event->acceptProposedAction();
+}
+//! [1]
+
+//! [2]
+void MyWidget::mousePressEvent(QMouseEvent *event)
+{
+//! [2]
+    QString text = dataLabel->text();
+    QPixmap iconPixmap(32, 32);
+    iconPixmap.fill(qRgba(255, 0, 0, 127));
+    QImage image(100, 100, QImage::Format_RGB32);
+    image.fill(qRgb(0, 0, 255));
+
+//! [3]
+    if (event->button() == Qt::LeftButton) {
+
+        QDrag *drag = new QDrag(this);
+        QMimeData *mimeData = new QMimeData;
+
+        mimeData->setText(text);
+        mimeData->setImageData(image);
+        drag->setMimeData(mimeData);
+        drag->setPixmap(iconPixmap);
+
+        Qt::DropAction dropAction = drag->exec();
+//! [3]
+        // ...
+//! [4]
+        event->accept();
+    }
+//! [4]
+    else if (event->button() == Qt::MidButton) {
+
+        QDrag *drag = new QDrag(this);
+        QMimeData *mimeData = new QMimeData;
+
+        mimeData->setImageData(image);
+        drag->setMimeData(mimeData);
+        drag->setPixmap(iconPixmap);
+
+        Qt::DropAction dropAction = drag->exec();
+        // ...
+        event->accept();
+    }
+//! [5]
+}
+//! [5]
diff --git a/doc/src/snippets/porting4-dropevents/window.h b/doc/src/snippets/porting4-dropevents/window.h
new file mode 100644
index 0000000..4aebb8c
--- /dev/null
+++ b/doc/src/snippets/porting4-dropevents/window.h
@@ -0,0 +1,73 @@
+/****************************************************************************
+**
+** 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 WINDOW_H
+#define WINDOW_H
+
+#include <QString>
+#include <QStringList>
+#include <QWidget>
+
+class QComboBox;
+class QFrame;
+class QLabel;
+
+class MyWidget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    MyWidget(QWidget *parent = 0);
+
+protected:
+    void dragEnterEvent(QDragEnterEvent *event);
+    void dropEvent(QDropEvent *event);
+    void mousePressEvent(QMouseEvent *event);
+
+private:
+    QComboBox *mimeTypeCombo;
+    QFrame *dropFrame;
+    QLabel *dataLabel;
+    QString oldText;
+    QStringList oldMimeTypes;
+};
+
+#endif