Long live Qt 4.5!

8 files changed, 551 insertions, 0 deletions

diff --git a/examples/draganddrop/fridgemagnets/draglabel.cpp b/examples/draganddrop/fridgemagnets/draglabel.cpp
new file mode 100644
index 0000000..1bec024
--- /dev/null
+++ b/examples/draganddrop/fridgemagnets/draglabel.cpp
@@ -0,0 +1,90 @@
+/****************************************************************************
+**
+** 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 "draglabel.h"
+
+//! [0]
+DragLabel::DragLabel(const QString &text, QWidget *parent)
+    : QLabel(parent)
+{
+    QFontMetrics metric(font());
+    QSize size = metric.size(Qt::TextSingleLine, text);
+
+    QImage image(size.width() + 12, size.height() + 12,
+                 QImage::Format_ARGB32_Premultiplied);
+    image.fill(qRgba(0, 0, 0, 0));
+
+    QFont font;
+    font.setStyleStrategy(QFont::ForceOutline);
+//! [0]
+
+//! [1]
+    QLinearGradient gradient(0, 0, 0, image.height()-1);
+    gradient.setColorAt(0.0, Qt::white);
+    gradient.setColorAt(0.2, QColor(200, 200, 255));
+    gradient.setColorAt(0.8, QColor(200, 200, 255));
+    gradient.setColorAt(1.0, QColor(127, 127, 200));
+
+    QPainter painter;
+    painter.begin(&image);
+    painter.setRenderHint(QPainter::Antialiasing);
+    painter.setBrush(gradient);
+    painter.drawRoundedRect(QRectF(0.5, 0.5, image.width()-1, image.height()-1),
+                            25, 25, Qt::RelativeSize);
+
+    painter.setFont(font);
+    painter.setBrush(Qt::black);
+    painter.drawText(QRect(QPoint(6, 6), size), Qt::AlignCenter, text);
+    painter.end();
+//! [1]
+
+//! [2]
+    setPixmap(QPixmap::fromImage(image));
+    m_labelText = text;
+}
+//! [2]
+
+QString DragLabel::labelText() const
+{
+    return m_labelText;
+}
diff --git a/examples/draganddrop/fridgemagnets/draglabel.h b/examples/draganddrop/fridgemagnets/draglabel.h
new file mode 100644
index 0000000..5d2fd52
--- /dev/null
+++ b/examples/draganddrop/fridgemagnets/draglabel.h
@@ -0,0 +1,65 @@
+/****************************************************************************
+**
+** 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 DRAGLABEL_H
+#define DRAGLABEL_H
+
+#include <QLabel>
+
+QT_BEGIN_NAMESPACE
+class QDragEnterEvent;
+class QDragMoveEvent;
+class QFrame;
+QT_END_NAMESPACE
+
+//! [0]
+class DragLabel : public QLabel
+{
+public:
+    DragLabel(const QString &text, QWidget *parent);
+    QString labelText() const;
+
+private:
+    QString m_labelText;
+};
+//! [0]
+
+#endif
diff --git a/examples/draganddrop/fridgemagnets/dragwidget.cpp b/examples/draganddrop/fridgemagnets/dragwidget.cpp
new file mode 100644
index 0000000..43a9588
--- /dev/null
+++ b/examples/draganddrop/fridgemagnets/dragwidget.cpp
@@ -0,0 +1,212 @@
+/****************************************************************************
+**
+** 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 "draglabel.h"
+#include "dragwidget.h"
+
+//! [0]
+DragWidget::DragWidget(QWidget *parent)
+    : QWidget(parent)
+{
+    QFile dictionaryFile(":/dictionary/words.txt");
+    dictionaryFile.open(QFile::ReadOnly);
+    QTextStream inputStream(&dictionaryFile);
+//! [0]
+
+//! [1]
+    int x = 5;
+    int y = 5;
+
+    while (!inputStream.atEnd()) {
+        QString word;
+        inputStream >> word;
+        if (!word.isEmpty()) {
+            DragLabel *wordLabel = new DragLabel(word, this);
+            wordLabel->move(x, y);
+            wordLabel->show();
+            wordLabel->setAttribute(Qt::WA_DeleteOnClose);
+            x += wordLabel->width() + 2;
+            if (x >= 245) {
+                x = 5;
+                y += wordLabel->height() + 2;
+            }
+        }
+    }
+//! [1]
+
+//! [2]
+    QPalette newPalette = palette();
+    newPalette.setColor(QPalette::Window, Qt::white);
+    setPalette(newPalette);
+
+    setMinimumSize(400, qMax(200, y));
+    setWindowTitle(tr("Fridge Magnets"));
+//! [2] //! [3]
+    setAcceptDrops(true);
+}
+//! [3]
+
+//! [4]
+void DragWidget::dragEnterEvent(QDragEnterEvent *event)
+{
+//! [4] //! [5]
+    if (event->mimeData()->hasFormat("application/x-fridgemagnet")) {
+        if (children().contains(event->source())) {
+            event->setDropAction(Qt::MoveAction);
+            event->accept();
+        } else {
+            event->acceptProposedAction();
+//! [5] //! [6]
+        }
+//! [6] //! [7]
+    } else if (event->mimeData()->hasText()) {
+        event->acceptProposedAction();
+    } else {
+        event->ignore();
+    }
+}
+//! [7]
+
+//! [8]
+void DragWidget::dragMoveEvent(QDragMoveEvent *event)
+{
+    if (event->mimeData()->hasFormat("application/x-fridgemagnet")) {
+        if (children().contains(event->source())) {
+            event->setDropAction(Qt::MoveAction);
+            event->accept();
+        } else {
+            event->acceptProposedAction();
+        }
+    } else if (event->mimeData()->hasText()) {
+        event->acceptProposedAction();
+    } else {
+        event->ignore();
+    }
+}
+//! [8]
+
+//! [9]
+void DragWidget::dropEvent(QDropEvent *event)
+{
+    if (event->mimeData()->hasFormat("application/x-fridgemagnet")) {
+        const QMimeData *mime = event->mimeData();
+//! [9] //! [10]
+        QByteArray itemData = mime->data("application/x-fridgemagnet");
+        QDataStream dataStream(&itemData, QIODevice::ReadOnly);
+
+        QString text;
+        QPoint offset;
+        dataStream >> text >> offset;
+//! [10]
+//! [11]
+        DragLabel *newLabel = new DragLabel(text, this);
+        newLabel->move(event->pos() - offset);
+        newLabel->show();
+        newLabel->setAttribute(Qt::WA_DeleteOnClose);
+
+        if (event->source() == this) {
+            event->setDropAction(Qt::MoveAction);
+            event->accept();
+        } else {
+            event->acceptProposedAction();
+        }
+//! [11] //! [12]
+    } else if (event->mimeData()->hasText()) {
+        QStringList pieces = event->mimeData()->text().split(QRegExp("\\s+"),
+                             QString::SkipEmptyParts);
+        QPoint position = event->pos();
+
+        foreach (QString piece, pieces) {
+            DragLabel *newLabel = new DragLabel(piece, this);
+            newLabel->move(position);
+            newLabel->show();
+            newLabel->setAttribute(Qt::WA_DeleteOnClose);
+
+            position += QPoint(newLabel->width(), 0);
+        }
+
+        event->acceptProposedAction();
+    } else {
+        event->ignore();
+    }
+}
+//! [12]
+
+//! [13]
+void DragWidget::mousePressEvent(QMouseEvent *event)
+{
+//! [13]
+//! [14]
+    DragLabel *child = static_cast<DragLabel*>(childAt(event->pos()));
+    if (!child)
+        return;
+
+    QPoint hotSpot = event->pos() - child->pos();
+
+    QByteArray itemData;
+    QDataStream dataStream(&itemData, QIODevice::WriteOnly);
+    dataStream << child->labelText() << QPoint(hotSpot);
+//! [14]
+
+//! [15]
+    QMimeData *mimeData = new QMimeData;
+    mimeData->setData("application/x-fridgemagnet", itemData);
+    mimeData->setText(child->labelText());
+//! [15]
+
+//! [16]
+    QDrag *drag = new QDrag(this);
+    drag->setMimeData(mimeData);
+    drag->setPixmap(*child->pixmap());
+    drag->setHotSpot(hotSpot);
+
+    child->hide();
+//! [16]
+
+//! [17]
+    if (drag->exec(Qt::MoveAction | Qt::CopyAction, Qt::CopyAction) == Qt::MoveAction)
+        child->close();
+    else
+        child->show();
+}
+//! [17]
diff --git a/examples/draganddrop/fridgemagnets/dragwidget.h b/examples/draganddrop/fridgemagnets/dragwidget.h
new file mode 100644
index 0000000..4722917
--- /dev/null
+++ b/examples/draganddrop/fridgemagnets/dragwidget.h
@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** 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 DRAGWIDGET_H
+#define DRAGWIDGET_H
+
+#include <QWidget>
+
+QT_BEGIN_NAMESPACE
+class QDragEnterEvent;
+class QDropEvent;
+QT_END_NAMESPACE
+
+//! [0]
+class DragWidget : public QWidget
+{
+public:
+    DragWidget(QWidget *parent = 0);
+
+protected:
+    void dragEnterEvent(QDragEnterEvent *event);
+    void dragMoveEvent(QDragMoveEvent *event);
+    void dropEvent(QDropEvent *event);
+    void mousePressEvent(QMouseEvent *event);
+};
+//! [0]
+
+#endif
diff --git a/examples/draganddrop/fridgemagnets/fridgemagnets.pro b/examples/draganddrop/fridgemagnets/fridgemagnets.pro
new file mode 100644
index 0000000..f1baaef
--- /dev/null
+++ b/examples/draganddrop/fridgemagnets/fridgemagnets.pro
@@ -0,0 +1,12 @@
+HEADERS     = draglabel.h \
+              dragwidget.h
+RESOURCES   = fridgemagnets.qrc
+SOURCES     = draglabel.cpp \
+              dragwidget.cpp \
+              main.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/draganddrop/fridgemagnets
+sources.files = $$SOURCES $$HEADERS $$RESOURCES *.pro *.txt
+sources.path = $$[QT_INSTALL_EXAMPLES]/draganddrop/fridgemagnets
+INSTALLS += target sources
diff --git a/examples/draganddrop/fridgemagnets/fridgemagnets.qrc b/examples/draganddrop/fridgemagnets/fridgemagnets.qrc
new file mode 100644
index 0000000..b72217d
--- /dev/null
+++ b/examples/draganddrop/fridgemagnets/fridgemagnets.qrc
@@ -0,0 +1,5 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource prefix="/dictionary">
+   <file>words.txt</file>
+</qresource>
+</RCC>
diff --git a/examples/draganddrop/fridgemagnets/main.cpp b/examples/draganddrop/fridgemagnets/main.cpp
new file mode 100644
index 0000000..c24cdb2
--- /dev/null
+++ b/examples/draganddrop/fridgemagnets/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 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 "dragwidget.h"
+
+int main(int argc, char *argv[])
+{
+    Q_INIT_RESOURCE(fridgemagnets);
+
+    QApplication app(argc, argv);
+    DragWidget window;
+    window.show();
+    return app.exec();
+}
diff --git a/examples/draganddrop/fridgemagnets/words.txt b/examples/draganddrop/fridgemagnets/words.txt
new file mode 100644
index 0000000..a7e1632
--- /dev/null
+++ b/examples/draganddrop/fridgemagnets/words.txt
@@ -0,0 +1,48 @@
+Colorless
+green
+ideas
+sleep
+furiously
+A
+colorless
+green
+idea
+is
+a
+new
+untried
+idea
+that
+is
+without
+vividness
+dull
+and
+unexciting
+To
+sleep
+furiously
+may
+seem
+a
+puzzling
+turn
+of
+phrase
+but
+the
+mind
+in
+sleep
+often
+indeed
+moves
+furiously
+with
+ideas
+and
+images
+flickering
+in
+and
+out