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authorJ-P Nurmi <jpnurmi@digia.com>2012-11-27 14:18:41 +0100
committerThe Qt Project <gerrit-noreply@qt-project.org>2012-11-28 00:56:34 +0100
commitcb961007c534b260b779ed513d33843a9dce01f4 (patch)
treed780db451451d51ab10aa114a6e01f813e32c852 /examples/widgets/tools/undoframework/diagramscene.cpp
parent3d66b86cb7407201f091d16130b3da73e613cc5f (diff)
Examples: move widgets specific "tools" examples to the correct place
examples/tools -> examples/widgets/tools Change-Id: I8b9e23c45e07ce5cd9da8f24a9a9f7ae10b2b107 Reviewed-by: hjk <qthjk@ovi.com>
Diffstat (limited to 'examples/widgets/tools/undoframework/diagramscene.cpp')
-rw-r--r--examples/widgets/tools/undoframework/diagramscene.cpp76
1 files changed, 76 insertions, 0 deletions
diff --git a/examples/widgets/tools/undoframework/diagramscene.cpp b/examples/widgets/tools/undoframework/diagramscene.cpp
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+/****************************************************************************
+**
+** 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);
+}