def _draw_fold_indicator(self, top, mouse_over, collapsed, painter):
        """
        Draw the fold indicator/trigger (arrow).

        :param top: Top position
        :param mouse_over: Whether the mouse is over the indicator
        :param collapsed: Whether the trigger is collapsed or not.
        :param painter: QPainter
        """
        rect = QRect(0, top, self.sizeHint().width(),
                            self.sizeHint().height())
        if self._native_icons:
            opt = QStyleOptionViewItem()

            opt.rect = rect
            opt.state = (QStyle.State_Active |
                         QStyle.State_Item |
                         QStyle.State_Children)
            if not collapsed:
                opt.state |= QStyle.State_Open
            if mouse_over:
                opt.state |= (QStyle.State_MouseOver |
                              QStyle.State_Enabled |
                              QStyle.State_Selected)
                opt.palette.setBrush(QPalette.Window,
                                     self.palette().highlight())
            opt.rect.translate(-2, 0)
            self.style().drawPrimitive(QStyle.PE_IndicatorBranch,
                                       opt, painter, self)
        else:
            index = 0
            if not collapsed:
                index = 2
            if mouse_over:
                index += 1
            ima.icon(self._indicators_icons[index]).paint(painter, rect)
def _draw_fold_indicator ( self , top , mouse_over , collapsed , painter ) : rect = QRect ( 0 , top , self . sizeHint ( ) . width ( ) , self . sizeHint ( ) . height ( ) ) if self . _native_icons : opt = QStyleOptionViewItem ( ) opt . rect = rect opt . state = ( QStyle . State_Active | QStyle . State_Item | QStyle . State_Children ) if not collapsed : opt . state |= QStyle . State_Open if mouse_over : opt . state |= ( QStyle . State_MouseOver | QStyle . State_Enabled | QStyle . State_Selected ) opt . palette . setBrush ( QPalette . Window , self . palette ( ) . highlight ( ) ) opt . rect . translate ( - 2 , 0 ) self . style ( ) . drawPrimitive ( QStyle . PE_IndicatorBranch , opt , painter , self ) else : index = 0 if not collapsed : index = 2 if mouse_over : index += 1 ima . icon ( self . _indicators_icons [ index ] ) . paint ( painter , rect )
Draw the fold indicator/trigger (arrow).

        :param top: Top position
        :param mouse_over: Whether the mouse is over the indicator
        :param collapsed: Whether the trigger is collapsed or not.
        :param painter: QPainter