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/*
* Copyright (C) 2015-2016 Département de l'Instruction Publique (DIP-SEM)
*
* Copyright (C) 2013 Open Education Foundation
*
* Copyright (C) 2010-2013 Groupement d'Intérêt Public pour
* l'Education Numérique en Afrique (GIP ENA)
*
* This file is part of OpenBoard.
*
* OpenBoard 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, version 3 of the License,
* with a specific linking exception for the OpenSSL project's
* "OpenSSL" library (or with modified versions of it that use the
* same license as the "OpenSSL" library).
*
* OpenBoard 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 OpenBoard. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef UBGRAPHICSPROTRACTOR_H_
#define UBGRAPHICSPROTRACTOR_H_
#include <QtWidgets>
#include <QtWidgets/QGraphicsItem>
#include <QtWidgets/QGraphicsView>
#include <QtSvg>
#include "core/UB.h"
#include "tools/UBAbstractDrawRuler.h"
#include "domain/UBItem.h"
#include "frameworks/UBGeometryUtils.h"
class UBGraphicsScene;
class UBGraphicsProtractor : public UBAbstractDrawRuler, public QGraphicsEllipseItem, public UBItem
{
Q_OBJECT
public:
UBGraphicsProtractor ();
enum Tool {None, Move, Resize, Rotate, Reset, Close, MoveMarker};
qreal angle () { return mStartAngle; }
qreal markerAngle () { return mCurrentAngle; }
void setAngle (qreal angle) { mStartAngle = angle; setStartAngle(mStartAngle * 16); }
void setMarkerAngle (qreal angle) { mCurrentAngle = angle; }
virtual UBItem* deepCopy() const;
virtual void copyItemParameters(UBItem *copy) const;
enum { Type = UBGraphicsItemType::ProtractorItemType };
virtual int type() const
{
return Type;
}
protected:
virtual void paint (QPainter *painter, const QStyleOptionGraphicsItem *styleOption, QWidget *widget);
virtual QVariant itemChange(GraphicsItemChange change, const QVariant &value);
virtual void mousePressEvent (QGraphicsSceneMouseEvent *event);
virtual void mouseMoveEvent (QGraphicsSceneMouseEvent *event);
virtual void mouseReleaseEvent (QGraphicsSceneMouseEvent *event);
virtual void hoverEnterEvent (QGraphicsSceneHoverEvent *event);
virtual void hoverLeaveEvent (QGraphicsSceneHoverEvent *event);
virtual void hoverMoveEvent (QGraphicsSceneHoverEvent *event);
virtual QPainterPath shape() const;
QRectF boundingRect() const;
void paintGraduations(QPainter *painter);
private:
// Helpers
void paintButtons (QPainter *painter);
void paintAngleMarker (QPainter *painter);
Tool toolFromPos (QPointF pos);
qreal antiScale () const;
UBGraphicsScene* scene() const;
QBrush fillBrush() const;
QSizeF buttonSizeReference () const{return QSizeF(radius() / 10, mCloseSvgItem->boundingRect().height() * radius()/(10 * mCloseSvgItem->boundingRect().width()));}
QSizeF markerSizeReference () const{return QSizeF(radius() / 10, mMarkerSvgItem->boundingRect().height() * radius()/(10 * mMarkerSvgItem->boundingRect().width()));}
QRectF resetButtonRect () const;
QRectF closeButtonRect () const;
QRectF resizeButtonRect () const;
QRectF rotateButtonRect () const;
QRectF markerButtonRect () const;
inline qreal radius () const{return rect().height() / 2 - 20;}
// Members
QPointF mPreviousMousePos;
Tool mCurrentTool;
bool mShowButtons;
qreal mCurrentAngle;
qreal mSpan;
qreal mStartAngle;
qreal mScaleFactor;
QGraphicsSvgItem* mResetSvgItem;
QGraphicsSvgItem* mResizeSvgItem;
QGraphicsSvgItem* mMarkerSvgItem;
QGraphicsSvgItem* mRotateSvgItem;
static const QRectF sDefaultRect;
virtual void rotateAroundCenter(qreal angle);
virtual QPointF rotationCenter() const;
int sFillTransparency;
int sDrawTransparency;
};
#endif /* UBGRAPHICSPROTRACTOR_H_ */