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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+** the names of its contributors may be used to endorse or promote
+** products derived from this software without specific prior written
+** permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*
+finalwidget.cpp
+
+A widget to display an image and a label containing a description.
+*/
+
+#include <QtGui>
+#include "finalwidget.h"
+
+FinalWidget::FinalWidget(QWidget *parent, const QString &name,
+ const QSize &labelSize)
+ : QFrame(parent)
+{
+ hasImage = false;
+ imageLabel = new QLabel;
+ imageLabel->setFrameShadow(QFrame::Sunken);
+ imageLabel->setFrameShape(QFrame::StyledPanel);
+ imageLabel->setMinimumSize(labelSize);
+ nameLabel = new QLabel(name);
+
+ QVBoxLayout *layout = new QVBoxLayout;
+ layout->addWidget(imageLabel, 1);
+ layout->addWidget(nameLabel, 0);
+ setLayout(layout);
+}
+
+/*!
+ If the mouse moves far enough when the left mouse button is held down,
+ start a drag and drop operation.
+*/
+
+void FinalWidget::mouseMoveEvent(QMouseEvent *event)
+{
+ if (!(event->buttons() & Qt::LeftButton))
+ return;
+ if ((event->pos() - dragStartPosition).manhattanLength()
+ < QApplication::startDragDistance())
+ return;
+ if (!hasImage)
+ return;
+
+ QDrag *drag = new QDrag(this);
+ QMimeData *mimeData = new QMimeData;
+
+//! [0]
+ QByteArray output;
+ QBuffer outputBuffer(&output);
+ outputBuffer.open(QIODevice::WriteOnly);
+ imageLabel->pixmap()->toImage().save(&outputBuffer, "PNG");
+ mimeData->setData("image/png", output);
+//! [0]
+/*
+//! [1]
+ mimeData->setImageData(QVariant(*imageLabel->pixmap()));
+//! [1]
+*/
+ drag->setMimeData(mimeData);
+ drag->setPixmap(imageLabel->pixmap()->scaled(64, 64, Qt::KeepAspectRatio));
+//! [2]
+ drag->setHotSpot(QPoint(drag->pixmap().width()/2,
+ drag->pixmap().height()));
+//! [2]
+
+ drag->start();
+}
+
+/*!
+ Check for left mouse button presses in order to enable drag and drop.
+*/
+
+void FinalWidget::mousePressEvent(QMouseEvent *event)
+{
+ if (event->button() == Qt::LeftButton)
+ dragStartPosition = event->pos();
+}
+
+const QPixmap* FinalWidget::pixmap() const
+{
+ return imageLabel->pixmap();
+}
+
+void FinalWidget::setPixmap(const QPixmap &pixmap)
+{
+ imageLabel->setPixmap(pixmap);
+ hasImage = true;
+}