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#ifndef UB_ABSTRACTDRAWRULER_H_
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#define UB_ABSTRACTDRAWRULER_H_
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#include <QtGui>
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class UBGraphicsScene;
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class QGraphicsSvgItem;
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class UBAbstractDrawRuler : public QObject
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{
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Q_OBJECT
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public:
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UBAbstractDrawRuler();
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~UBAbstractDrawRuler();
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void create(QGraphicsItem& item);
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virtual void StartLine(const QPointF& position, qreal width);
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virtual void DrawLine(const QPointF& position, qreal width);
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virtual void EndLine();
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protected:
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void paint();
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virtual UBGraphicsScene* scene() const = 0;
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virtual void rotateAroundTopLeftOrigin(qreal angle) = 0;
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virtual QPointF topLeftOrigin() const = 0;
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virtual QRectF resizeButtonRect() const = 0;
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virtual QRectF closeButtonRect() const = 0;
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virtual QRectF rotateButtonRect() const = 0;
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void updateResizeCursor(QGraphicsItem &item);
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bool mResizing;
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bool mRotating;
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bool mShowButtons;
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QGraphicsSvgItem* mCloseSvgItem;
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QGraphicsSvgItem* mRotateSvgItem;
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QCursor mResizeCursor;
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qreal mAntiScaleRatio;
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QPointF startDrawPosition;
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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 drawRulerLineCursor() 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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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 sLeftEdgeMargin = 10;
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static const int sMinLength = 150;
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static const int sDegreeToQtAngleUnit = 16;
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static const int sRotationRadius = 15;
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static const int sPixelsPerMillimeter = 5;
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static const int sFillTransparency = 127;
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static const int sDrawTransparency = 192;
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static const int sRoundingRadius = sLeftEdgeMargin / 2;
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};
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#endif
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