1 /****************************************************************************
3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/
6 ** This file is part of the documentation of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:BSD$
9 ** You may use this file under the terms of the BSD license as follows:
11 ** "Redistribution and use in source and binary forms, with or without
12 ** modification, are permitted provided that the following conditions are
14 ** * Redistributions of source code must retain the above copyright
15 ** notice, this list of conditions and the following disclaimer.
16 ** * Redistributions in binary form must reproduce the above copyright
17 ** notice, this list of conditions and the following disclaimer in
18 ** the documentation and/or other materials provided with the
20 ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
21 ** the names of its contributors may be used to endorse or promote
22 ** products derived from this software without specific prior written
25 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
39 ****************************************************************************/
44 A widget to display an image and a label containing a description.
48 #include "finalwidget.h"
50 FinalWidget::FinalWidget(QWidget *parent, const QString &name,
51 const QSize &labelSize)
55 imageLabel = new QLabel;
56 imageLabel->setFrameShadow(QFrame::Sunken);
57 imageLabel->setFrameShape(QFrame::StyledPanel);
58 imageLabel->setMinimumSize(labelSize);
59 nameLabel = new QLabel(name);
61 QVBoxLayout *layout = new QVBoxLayout;
62 layout->addWidget(imageLabel, 1);
63 layout->addWidget(nameLabel, 0);
68 If the mouse moves far enough when the left mouse button is held down,
69 start a drag and drop operation.
72 void FinalWidget::mouseMoveEvent(QMouseEvent *event)
74 if (!(event->buttons() & Qt::LeftButton))
76 if ((event->pos() - dragStartPosition).manhattanLength()
77 < QApplication::startDragDistance())
82 QDrag *drag = new QDrag(this);
83 QMimeData *mimeData = new QMimeData;
87 QBuffer outputBuffer(&output);
88 outputBuffer.open(QIODevice::WriteOnly);
89 imageLabel->pixmap()->toImage().save(&outputBuffer, "PNG");
90 mimeData->setData("image/png", output);
94 mimeData->setImageData(QVariant(*imageLabel->pixmap()));
97 drag->setMimeData(mimeData);
98 drag->setPixmap(imageLabel->pixmap()->scaled(64, 64, Qt::KeepAspectRatio));
100 drag->setHotSpot(QPoint(drag->pixmap().width()/2,
101 drag->pixmap().height()));
108 Check for left mouse button presses in order to enable drag and drop.
111 void FinalWidget::mousePressEvent(QMouseEvent *event)
113 if (event->button() == Qt::LeftButton)
114 dragStartPosition = event->pos();
117 const QPixmap* FinalWidget::pixmap() const
119 return imageLabel->pixmap();
122 void FinalWidget::setPixmap(const QPixmap &pixmap)
124 imageLabel->setPixmap(pixmap);