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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "diagramscene.h"
#include "diagramitem.h"
#include <QGraphicsSceneMouseEvent>
DiagramScene::DiagramScene(QObject *parent)
: QGraphicsScene(parent)
{}
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() ? nullptr : itemList.first();
if (movingItem != nullptr && event->button() == Qt::LeftButton)
oldPos = movingItem->pos();
clearSelection();
QGraphicsScene::mousePressEvent(event);
}
void DiagramScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
if (movingItem != nullptr && event->button() == Qt::LeftButton) {
if (oldPos != movingItem->pos())
emit itemMoved(qgraphicsitem_cast<DiagramItem *>(movingItem),
oldPos);
movingItem = nullptr;
}
QGraphicsScene::mouseReleaseEvent(event);
}
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