/* * 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; static const qreal minRadius; virtual void rotateAroundCenter(qreal angle); virtual QPointF rotationCenter() const; int sFillTransparency; int sDrawTransparency; }; #endif /* UBGRAPHICSPROTRACTOR_H_ */