Merge branch 0.4 import image to trunk

git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@2449 bfdf4180-ca20-0410-9c96-a3a8aa849046

sources/diagramimageitem.h

@@ -0,0 +1,85 @@
+/*
+	Copyright 2006-2013 QElectroTech Team
+	This file is part of QElectroTech.
+	
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+	
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+	
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#ifndef DIAGRAM_IMAGE_ITEM_H
+#define DIAGRAM_IMAGE_ITEM_H
+#include <QtGui>
+#include "diagram.h"
+/**
+	This class represents a selectable, movable and editable image on a
+	diagram.
+	@see QGraphicsItem::GraphicsItemFlags
+*/
+class DiagramImageItem : public QObject, public QGraphicsPixmapItem {
+	Q_OBJECT
+	// constructors, destructor
+	public:
+	DiagramImageItem(Diagram * = 0);
+	DiagramImageItem(const QPixmap &, Diagram * = 0);
+	virtual ~DiagramImageItem();
+	
+	// attributes
+	public:
+	enum { Type = UserType + 1007 };
+	
+	// methods
+	public:
+	/**
+		Enable the use of qgraphicsitem_cast to safely cast a QGraphicsItem into a
+		DiagramImageItem
+		@return the QGraphicsItem type
+	*/
+	virtual int type() const { return Type; }
+	Diagram *diagram() const;
+	
+	virtual bool fromXml(const QDomElement &);
+	virtual QDomElement toXml(QDomDocument &) const;
+	
+	virtual void setPos(const QPointF &);
+	virtual void setPos(qreal, qreal);
+	virtual QPointF pos() const;
+	void setRotationAngle(const qreal &);
+	void rotateBy(const qreal &);
+	void edit();
+	QPointF mapMovementToScene(const QPointF &) const;
+	QPointF mapMovementFromScene(const QPointF &) const;
+	QPointF mapMovementToParent(const QPointF &) const;
+	QPointF mapMovementFromParent(const QPointF &) const;
+	
+	protected:
+	void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *);
+	void focusInEvent(QFocusEvent *);
+	void focusOutEvent(QFocusEvent *);
+	void mousePressEvent(QGraphicsSceneMouseEvent *e);
+	void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *);
+	void mouseMoveEvent(QGraphicsSceneMouseEvent *);
+	void mouseReleaseEvent(QGraphicsSceneMouseEvent *);
+	void applyRotation(const qreal &);
+	
+	signals:
+	/// signal emitted when the image field loses focus
+	void lostFocus();
+	/// signal emitted after image was changed
+	void diagramImageChanged(DiagramImageItem *, const QString &, const QString &);
+	
+	public slots:
+	void setNonFocusable();
+	
+	private:
+	bool first_move_;
+};
+#endif