cb961007c5
examples/tools -> examples/widgets/tools Change-Id: I8b9e23c45e07ce5cd9da8f24a9a9f7ae10b2b107 Reviewed-by: hjk <qthjk@ovi.com>
77 lines
3.0 KiB
C++
77 lines
3.0 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
|
|
** Contact: http://www.qt-project.org/legal
|
|
**
|
|
** This file is part of the examples 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 Digia Plc 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."
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#include <QtWidgets>
|
|
|
|
#include "diagramscene.h"
|
|
#include "diagramitem.h"
|
|
|
|
DiagramScene::DiagramScene(QObject *parent)
|
|
: QGraphicsScene(parent)
|
|
{
|
|
movingItem = 0;
|
|
}
|
|
|
|
void DiagramScene::mousePressEvent(QGraphicsSceneMouseEvent *event)
|
|
{
|
|
QPointF mousePos(event->buttonDownScenePos(Qt::LeftButton).x(),
|
|
event->buttonDownScenePos(Qt::LeftButton).y());
|
|
const QList<QGraphicsItem *> itemList = items(mousePos);
|
|
movingItem = itemList.isEmpty() ? 0 : itemList.first();
|
|
|
|
if (movingItem != 0 && event->button() == Qt::LeftButton) {
|
|
oldPos = movingItem->pos();
|
|
}
|
|
|
|
clearSelection();
|
|
QGraphicsScene::mousePressEvent(event);
|
|
}
|
|
|
|
void DiagramScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
|
|
{
|
|
if (movingItem != 0 && event->button() == Qt::LeftButton) {
|
|
if (oldPos != movingItem->pos())
|
|
emit itemMoved(qgraphicsitem_cast<DiagramItem *>(movingItem),
|
|
oldPos);
|
|
movingItem = 0;
|
|
}
|
|
QGraphicsScene::mouseReleaseEvent(event);
|
|
}
|