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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of PySide2.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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 <QtWidgets>
+#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]
+ output = QByteArray()
+ outputBuffer = QBuffer(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;
+}