3fede6cb54
Cleanup QtWidgets tools examples: - use member-init (clang-tidy) - fix includes/don't include QtWidgets globally - include own header first - use nullptr (clang-tidy) - avoid c-style casts - use QVector instead QList - use QItemDelegate instead QStyledItemDelegate Change-Id: Ibe9440cdf711e5cc2138c054864edebe1fc95731 Reviewed-by: Paul Wicking <paul.wicking@qt.io>
84 lines
3.4 KiB
C++
84 lines
3.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** contributors may be used to endorse or promote products derived
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "diagramscene.h"
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#include "diagramitem.h"
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#include <QGraphicsSceneMouseEvent>
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DiagramScene::DiagramScene(QObject *parent)
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: QGraphicsScene(parent)
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{}
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void DiagramScene::mousePressEvent(QGraphicsSceneMouseEvent *event)
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{
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QPointF mousePos(event->buttonDownScenePos(Qt::LeftButton).x(),
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event->buttonDownScenePos(Qt::LeftButton).y());
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const QList<QGraphicsItem *> itemList = items(mousePos);
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movingItem = itemList.isEmpty() ? nullptr : itemList.first();
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if (movingItem != nullptr && event->button() == Qt::LeftButton)
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oldPos = movingItem->pos();
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clearSelection();
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QGraphicsScene::mousePressEvent(event);
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}
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void DiagramScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
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{
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if (movingItem != nullptr && event->button() == Qt::LeftButton) {
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if (oldPos != movingItem->pos())
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emit itemMoved(qgraphicsitem_cast<DiagramItem *>(movingItem),
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oldPos);
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movingItem = nullptr;
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}
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QGraphicsScene::mouseReleaseEvent(event);
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}
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