qt 自绘圆形进度条.rar

qt 自绘圆形进度条.rar如果开发者对于本文件有需要的可以参考。
protected:
virtual void paintEvent(QPaintEvent *event);
virtual void drawBackground(QPainter& p, const QRectF& baseRect);
virtual void drawBase(QPainter &p, const QRectF &baseRect,const QRectF &innerRect);
virtual void drawValue(QPainter &p , const QRectF &baseRect , double value , double arcLength, const QRectF & innerRect , double innerRadius);
virtual void calculateInnerRect(const QRectF& baseRect, double outerRadius, QRectF& innerRect, double& innerRadius);
virtual void drawInnerBackground(QPainter& p, const QRectF& innerRect);
virtual void drawText(QPainter& p, const QRectF& innerRect, double innerRadius, double value);
virtual QString valueToText(double value) const;
virtual void valueFormatChanged();