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/*
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* This program 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, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef UBGRAPHICSCOMPASS_H_
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#define UBGRAPHICSCOMPASS_H_
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#include <QtGui>
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#include <QtSvg>
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#include "core/UB.h"
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#include "domain/UBItem.h"
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class UBGraphicsScene;
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class UBGraphicsCompass: public QObject, public QGraphicsRectItem, public UBItem
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{
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Q_OBJECT;
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public:
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UBGraphicsCompass();
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virtual ~UBGraphicsCompass();
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enum { Type = UBGraphicsItemType::CompassItemType };
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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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virtual UBItem* deepCopy() const;
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virtual void copyItemParameters(UBItem *copy) const;
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signals:
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void hidden();
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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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// Events
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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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private slots:
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void penColorChanged();
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void lineWidthChanged();
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private:
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// Helpers
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void paintAngleDisplay(QPainter *painter);
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void paintRadiusDisplay(QPainter *painter);
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void rotateAroundNeedle(qreal angle);
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void drawArc();
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void updateResizeCursor();
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void updateDrawCursor();
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void paintCenterCross();
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QCursor moveCursor() const;
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QCursor resizeCursor() const;
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QCursor rotateCursor() const;
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QCursor closeCursor() const;
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QCursor drawCursor() const;
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QRectF hingeRect() const;
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QPointF needlePosition() const;
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QPointF pencilPosition() const;
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QRectF closeButtonRect() const;
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QRectF resizeButtonRect() const;
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virtual QPainterPath shape() const;
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QPainterPath needleShape() const;
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QPainterPath pencilShape() const;
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QPainterPath needleBaseShape() const;
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QPainterPath needleArmShape() const;
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QPainterPath hingeShape() const;
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QPainterPath pencilBaseShape() const;
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QPainterPath pencilArmShape() const;
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UBGraphicsScene* scene() const;
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QColor drawColor() const;
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QColor middleFillColor() const;
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QColor edgeFillColor() const;
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QFont font() const;
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qreal angleInDegrees() const;
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// Members
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QCursor mOuterCursor;
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QCursor mResizeCursor;
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QCursor mDrawCursor;
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bool mResizing;
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bool mRotating;
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bool mDrawing;
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bool mShowButtons;
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qreal mSpanAngleInDegrees;
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QPointF mSceneArcStartPoint;
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bool mDrewCircle;
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QGraphicsSvgItem* mCloseSvgItem;
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QGraphicsSvgItem* mResizeSvgItem;
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qreal mAntiScaleRatio;
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bool mDrewCenterCross;
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// Constants
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static const QRect sDefaultRect;
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static const int sNeedleLength = 24;
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static const int sNeedleBaseLength = 16;
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static const int sPencilLength = 16;
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static const int sPencilBaseLength = 24;
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static const int sMinRadius;
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static const int sDegreeToQtAngleUnit = 16;
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static const int sFillTransparency = 127;
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static const int sDrawTransparency = 192;
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static const QColor sLightBackgroundEdgeFillColor;
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static const QColor sLightBackgroundMiddleFillColor;
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static const QColor sLightBackgroundDrawColor;
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static const QColor sDarkBackgroundEdgeFillColor;
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static const QColor sDarkBackgroundMiddleFillColor;
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static const QColor sDarkBackgroundDrawColor;
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static const int sPixelsPerMillimeter = 5;
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static const int sDisplayRadiusOnPencilArmMinLength = 300;
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static const int sDisplayRadiusUnitMinLength = 250;
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};
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#endif /* UBGRAPHICSCOMPASS_H_ */
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