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131 lines
4.5 KiB
131 lines
4.5 KiB
/*
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* Copyright (C) 2015-2022 Département de l'Instruction Publique (DIP-SEM)
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*
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* Copyright (C) 2013 Open Education Foundation
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*
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* Copyright (C) 2010-2013 Groupement d'Intérêt Public pour
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* l'Education Numérique en Afrique (GIP ENA)
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*
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* This file is part of OpenBoard.
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*
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* OpenBoard is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3 of the License,
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* with a specific linking exception for the OpenSSL project's
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* "OpenSSL" library (or with modified versions of it that use the
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* same license as the "OpenSSL" library).
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*
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* OpenBoard is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with OpenBoard. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef UBGRAPHICSPROTRACTOR_H_
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#define UBGRAPHICSPROTRACTOR_H_
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#include <QtWidgets>
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#include <QtWidgets/QGraphicsItem>
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#include <QtWidgets/QGraphicsView>
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#include <QtSvg>
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#include "core/UB.h"
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#include "tools/UBAbstractDrawRuler.h"
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#include "domain/UBItem.h"
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#include "frameworks/UBGeometryUtils.h"
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class UBGraphicsScene;
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class UBGraphicsProtractor : public UBAbstractDrawRuler, public QGraphicsEllipseItem, public UBItem
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{
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Q_OBJECT
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public:
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UBGraphicsProtractor ();
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enum Tool {None, Move, Resize, Rotate, Reset, Close, MoveMarker};
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qreal angle () { return mStartAngle; }
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qreal markerAngle () { return mCurrentAngle; }
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void setAngle (qreal angle) { mStartAngle = angle; setStartAngle(mStartAngle * 16); }
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void setMarkerAngle (qreal angle) { mCurrentAngle = angle; }
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virtual UBItem* deepCopy() const;
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virtual void copyItemParameters(UBItem *copy) const;
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enum { Type = UBGraphicsItemType::ProtractorItemType };
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virtual int type() const
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{
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return Type;
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}
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protected:
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virtual void paint (QPainter *painter, const QStyleOptionGraphicsItem *styleOption, QWidget *widget);
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virtual QVariant itemChange(GraphicsItemChange change, const QVariant &value);
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virtual void mousePressEvent (QGraphicsSceneMouseEvent *event);
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virtual void mouseMoveEvent (QGraphicsSceneMouseEvent *event);
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virtual void mouseReleaseEvent (QGraphicsSceneMouseEvent *event);
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virtual void hoverEnterEvent (QGraphicsSceneHoverEvent *event);
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virtual void hoverLeaveEvent (QGraphicsSceneHoverEvent *event);
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virtual void hoverMoveEvent (QGraphicsSceneHoverEvent *event);
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virtual QPainterPath shape() const;
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QRectF boundingRect() const;
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void paintGraduations(QPainter *painter);
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private:
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// Helpers
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void paintButtons (QPainter *painter);
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void paintAngleMarker (QPainter *painter);
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Tool toolFromPos (QPointF pos);
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qreal antiScale () const;
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UBGraphicsScene* scene() const;
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QBrush fillBrush() const;
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QSizeF buttonSizeReference () const{return QSizeF(radius() / 10, mCloseSvgItem->boundingRect().height() * radius()/(10 * mCloseSvgItem->boundingRect().width()));}
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QSizeF markerSizeReference () const{return QSizeF(radius() / 10, mMarkerSvgItem->boundingRect().height() * radius()/(10 * mMarkerSvgItem->boundingRect().width()));}
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QRectF resetButtonRect () const;
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QRectF closeButtonRect () const;
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QRectF resizeButtonRect () const;
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QRectF rotateButtonRect () const;
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QRectF markerButtonRect () const;
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inline qreal radius () const{return rect().height() / 2 - 20;}
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// Members
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QPointF mPreviousMousePos;
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Tool mCurrentTool;
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bool mShowButtons;
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qreal mCurrentAngle;
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qreal mSpan;
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qreal mStartAngle;
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qreal mScaleFactor;
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QGraphicsSvgItem* mResetSvgItem;
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QGraphicsSvgItem* mResizeSvgItem;
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QGraphicsSvgItem* mMarkerSvgItem;
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QGraphicsSvgItem* mRotateSvgItem;
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static const QRectF sDefaultRect;
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static const qreal minRadius;
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virtual void rotateAroundCenter(qreal angle);
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virtual QPointF rotationCenter() const;
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int sFillTransparency;
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int sDrawTransparency;
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};
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#endif /* UBGRAPHICSPROTRACTOR_H_ */
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