python - PyQt Rounded progress bar -

inspired post , code here any pyqt circular progress bar? trying embed 4 rounded progress bar in gui application. in gui not need border of progress bar , base rectangle. how can remove these 2 in code of paintevent.

    def paintevent(self, event):         outerradius = min(125,110)         baserect = qtcore.qrectf(1, 1, outerradius-2, outerradius-2)  # don't want rectangular shape behind circular bar          buffer = qtgui.qimage(outerradius, outerradius, qtgui.qimage.format_argb32)         buffer.fill(255)          p = qtgui.qpainter(buffer)         p.setrenderhint(qtgui.qpainter.antialiasing)          # data brush         self.rebuilddatabrushifneeded()          # background         self.drawbackground(p, buffer.rect())          # base circle         self.drawbase(p, baserect)          # data circle         arcstep = 360.0 / (self.max - self.min) * self.value         self.drawvalue(p, baserect, self.value, arcstep)          # center circle         innerrect, innerradius = self.calculateinnerrect(baserect, outerradius)         self.drawinnerbackground(p, innerrect)          # text         self.drawtext(p, innerrect, innerradius, self.value)          # draw bar         p.end()          painter = qtgui.qpainter(self)         painter.drawimage(0, 0, buffer)      def drawbackground(self, p, baserect):         p.fillrect(baserect, self.palette().background())      def drawbase(self, p, baserect):         bs = self.barstyle         if bs == self.styledonut:             p.setpen(qtgui.qpen(self.palette().shadow().color(),  self.outlinepenwidth))             p.setbrush(self.palette().base())             p.drawarc(baserect,1,116)         elif bs == self.stylepie:             p.setpen(qtgui.qpen(self.palette().base().color(), self.outlinepenwidth))             p.setbrush(self.palette().base())             p.drawarc(baserect,1,116)         elif bs == self.styleline:             p.setpen(qtgui.qpen(self.palette().base().color(), self.outlinepenwidth))             p.setbrush(qt.qt.nobrush)             p.drawarc(baserect.adjusted(self.outlinepenwidth/2, self.outlinepenwidth/2, -self.outlinepenwidth/2, -self.outlinepenwidth/2))      def drawvalue(self, p, baserect, value, arclength):         # nothing draw         if value == self.min:             return          # line style         if self.barstyle == self.styleline:             p.setpen(qtgui.qpen(self.palette().highlight().color(), self.datapenwidth))             p.setbrush(qt.qt.nobrush)             p.drawarc(baserect.adjusted(self.outlinepenwidth/2, self.outlinepenwidth/2, -self.outlinepenwidth/2, -self.outlinepenwidth/2),                       self.nullposition * 16,                       -arclength * 16)             return          # pie , donut styles         datapath = qtgui.qpainterpath()         datapath.setfillrule(qt.qt.windingfill)          # pie segment outer         datapath.moveto(baserect.center())         datapath.arcto(baserect, self.nullposition, -arclength)         datapath.lineto(baserect.center())          p.setbrush(self.palette().highlight())         p.setpen(qtgui.qpen(self.palette().shadow().color(), self.datapenwidth))         p.drawpath(datapath)      def calculateinnerrect(self, baserect, outerradius):         # line style         if self.barstyle == self.styleline:             innerradius = outerradius - self.outlinepenwidth         else:    # pie , donut styles             innerradius = outerradius * self.donutthicknessratio          delta = (outerradius - innerradius) / 2.         innerrect = qtcore.qrectf(delta, delta, innerradius, innerradius)         return innerrect, innerradius      def drawinnerbackground(self, p, innerrect):         if self.barstyle == self.styledonut:             p.setbrush(self.palette().alternatebase())              cmod = p.compositionmode()             p.setcompositionmode(qtgui.qpainter.compositionmode_source)              p.drawellipse(innerrect)              p.setcompositionmode(cmod)      def drawtext(self, p, innerrect, innerradius, value):         if not self.format:             return          text = self.valuetotext(value)          # !!! revise         f = self.font()         # f.setpixelsize(innerradius * max(0.05, (0.35 - self.decimals * 0.08)))         f.setpixelsize(innerradius * 1.8 / len(text))         p.setfont(f)          textrect = innerrect         p.setpen(self.palette().text().color())         p.drawtext(textrect, qt.qt.aligncenter, text)      def valuetotext(self, value):         texttodraw = self.format          format_string = '{' + ':.{}f'.format(self.decimals) + '}'          if self.updateflags & self.uf_value:             texttodraw = texttodraw.replace("%v", format_string.format(value))          if self.updateflags & self.uf_percent:             percent = (value - self.min) / (self.max - self.min) * 100.0             texttodraw = texttodraw.replace("%p", format_string.format(percent))          if self.updateflags & self.uf_max:             m = self.max - self.min + 1             texttodraw = texttodraw.replace("%m", format_string.format(m))          return texttodraw      def valueformatchanged(self):         self.updateflags = 0;          if "%v" in self.format:             self.updateflags |= self.uf_value          if "%p" in self.format:             self.updateflags |= self.uf_percent          if "%m" in self.format:             self.updateflags |= self.uf_max          self.update()      def rebuilddatabrushifneeded(self):         if self.rebuildbrush:             self.rebuildbrush = false              databrush = qtgui.qconicalgradient()             databrush.setcenter(0.5,0.5)             databrush.setcoordinatemode(qtgui.qgradient.stretchtodevicemode)              pos, color in self.gradientdata:                 databrush.setcolorat(1.0 - pos, color)              # angle             databrush.setangle(self.nullposition)              p = self.palette()             p.setbrush(qtgui.qpalette.highlight, databrush)             self.setpalette(p)   class tstwidget(qtgui.qwidget):     def __init__(self):         super(type(self), self).__init__()          self.bar = qroundprogressbar()         self.bar.setfixedsize(400, 400)          #self.bar.setdatapenwidth(3)         #self.bar.setoutlinepenwidth(3)         self.bar.setdonutthicknessratio(0.85)         self.bar.setdecimals(1)         self.bar.setformat('%p %')         # self.bar.resetformat()         self.bar.setnullposition(180)         self.bar.setbarstyle(qroundprogressbar.styledonut)         self.bar.setdatacolors([(0., qtgui.qcolor.fromrgb(0,159,80)), (0.5, qtgui.qcolor.fromrgb(255,255,0)), (1., qtgui.qcolor.fromrgb(255,255,0))])          self.bar.setrange(0, 100)         self.bar.setvalue(85)          lay = qtgui.qvboxlayout()         lay.addwidget(self.bar)         self.setlayout(lay)       def main():         app = qtgui.qapplication(sys.argv)         ex = tstwidget()         ex.show()         app.exec_() if __name__ == '__main__':     main()