110 lines
3.6 KiB
C++
110 lines
3.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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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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** You may use this file under the terms of the BSD license 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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** distribution.
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** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
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** of its contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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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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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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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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#ifndef DIAGRAMSCENE_H
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#define DIAGRAMSCENE_H
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#include "diagramitem.h"
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#include "diagramtextitem.h"
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#include <QGraphicsScene>
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QT_BEGIN_NAMESPACE
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class QGraphicsSceneMouseEvent;
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class QMenu;
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class QPointF;
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class QGraphicsLineItem;
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class QFont;
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class QGraphicsTextItem;
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class QColor;
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QT_END_NAMESPACE
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//! [0]
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class DiagramScene : public QGraphicsScene
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{
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Q_OBJECT
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public:
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enum Mode { InsertItem, InsertLine, InsertText, MoveItem };
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explicit DiagramScene(QMenu *itemMenu, QObject *parent = 0);
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QFont font() const { return myFont; }
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QColor textColor() const { return myTextColor; }
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QColor itemColor() const { return myItemColor; }
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QColor lineColor() const { return myLineColor; }
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void setLineColor(const QColor &color);
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void setTextColor(const QColor &color);
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void setItemColor(const QColor &color);
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void setFont(const QFont &font);
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public slots:
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void setMode(Mode mode);
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void setItemType(DiagramItem::DiagramType type);
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void editorLostFocus(DiagramTextItem *item);
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signals:
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void itemInserted(DiagramItem *item);
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void textInserted(QGraphicsTextItem *item);
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void itemSelected(QGraphicsItem *item);
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protected:
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void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
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void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
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void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
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private:
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bool isItemChange(int type);
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DiagramItem::DiagramType myItemType;
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QMenu *myItemMenu;
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Mode myMode;
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bool leftButtonDown;
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QPointF startPoint;
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QGraphicsLineItem *line;
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QFont myFont;
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DiagramTextItem *textItem;
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QColor myTextColor;
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QColor myItemColor;
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QColor myLineColor;
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};
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//! [0]
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#endif // DIAGRAMSCENE_H
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