Python QRectF.moveCenter方法代码示例

# 需要导入模块: from qwt.qt.QtCore import QRectF [as 别名]
# 或者: from qwt.qt.QtCore.QRectF import moveCenter [as 别名]
    def drawSymbol(self, painter, point_or_rect):
        """
        Draw the symbol into a rectangle

        The symbol is painted centered and scaled into the target rectangle.
        It is always painted uncached and the pin point is ignored.

        This method is primarily intended for drawing a symbol to the legend.

        :param QPainter painter: Painter
        :param point_or_rect: Position or target rectangle of the symbol in screen coordinates
        :type point_or_rect: QPointF or QPoint or QRectF
        """
        if isinstance(point_or_rect, (QPointF, QPoint)):
            # drawSymbol( QPainter *, const QPointF & )
            self.drawSymbols(painter, [point_or_rect])
            return
        # drawSymbol( QPainter *, const QRectF & )
        rect = point_or_rect
        assert isinstance(rect, QRectF)
        if self.__data.style == QwtSymbol.NoSymbol:
            return
        if self.__data.style == QwtSymbol.Graphic:
            self.__data.graphic.graphic.render(painter, rect,
                                               Qt.KeepAspectRatio)
        elif self.__data.style == QwtSymbol.Path:
            if self.__data.path.graphic.isNull():
                self.__data.path.graphic = qwtPathGraphic(
                    self.__data.path.path, self.__data.pen, self.__data.brush)
            self.__data.path.graphic.render(painter, rect, Qt.KeepAspectRatio)
            return
        elif self.__data.style == QwtSymbol.SvgDocument:
            if self.__data.svg.renderer is not None:
                scaledRect = QRectF()
                sz = QSizeF(self.__data.svg.renderer.viewBoxF().size())
                if not sz.isEmpty():
                    sz.scale(rect.size(), Qt.KeepAspectRatio)
                    scaledRect.setSize(sz)
                    scaledRect.moveCenter(rect.center())
                else:
                    scaledRect = rect
                self.__data.svg.renderer.render(painter, scaledRect)
        else:
            br = QRect(self.boundingRect())
            ratio = min([rect.width()/br.width(), rect.height()/br.height()])
            painter.save()
            painter.translate(rect.center())
            painter.scale(ratio, ratio)
            isPinPointEnabled = self.__data.isPinPointEnabled
            self.__data.isPinPointEnabled = False
            pos = QPointF()
            self.renderSymbols(painter, pos, 1)
            self.__data.isPinPointEnabled = isPinPointEnabled
            painter.restore()

# 需要导入模块: from qwt.qt.QtCore import QRectF [as 别名]
# 或者: from qwt.qt.QtCore.QRectF import moveCenter [as 别名]
def qwtDrawStar1Symbols(painter, points, numPoints, symbol):
    size =symbol.size()
    painter.setPen(symbol.pen())
    sqrt1_2 = np.sqrt(.5)
    r = QRectF(0, 0, size.width(), size.height())
    for pos in points:
        r.moveCenter(pos.toPoint())
        c = QPointF(r.center())
        d1 = r.width()/2.*(1.-sqrt1_2)
        painter.drawLine(r.left()+d1, r.top()+d1, r.right()-d1, r.bottom()-d1)
        painter.drawLine(r.left()+d1, r.bottom()-d1, r.right()-d1, r.top()+d1)
        painter.drawLine(c.x(), r.top(), c.x(), r.bottom())
        painter.drawLine(r.left(), c.y(), r.right(), c.y())

# 需要导入模块: from qwt.qt.QtCore import QRectF [as 别名]
# 或者: from qwt.qt.QtCore.QRectF import moveCenter [as 别名]
 def drawSymbol(self, painter, point_or_rect):
     if isinstance(point_or_rect, (QPointF, QPoint)):
         # drawSymbol( QPainter *, const QPointF & )
         self.drawSymbols(painter, [point_or_rect], 1)
         return
     # drawSymbol( QPainter *, const QRectF & )
     rect = point_or_rect
     assert isinstance(rect, QRectF)
     if self.__data.style == QwtSymbol.NoSymbol:
         return
     if self.__data.style == QwtSymbol.Graphic:
         self.__data.graphic.graphic.render(painter, rect,
                                            Qt.KeepAspectRatio)
     elif self.__data.style == QwtSymbol.Path:
         if self.__data.path.graphic.isNull():
             self.__data.path.graphic = qwtPathGraphic(
                 self.__data.path.path, self.__data.pen, self.__data.brush)
         self.__data.path.graphic.render(painter, rect, Qt.KeepAspectRatio)
         return
     elif self.__data.style == QwtSymbol.SvgDocument:
         if self.__data.svg.renderer is not None:
             scaledRect = QRectF()
             sz = QSizeF(self.__data.svg.renderer.viewBoxF().size())
             if not sz.isEmpty():
                 sz.scale(rect.size(), Qt.KeepAspectRatio)
                 scaledRect.setSize(sz)
                 scaledRect.moveCenter(rect.center())
             else:
                 scaledRect = rect
             self.__data.svg.renderer.render(painter, scaledRect)
     else:
         br = QRect(self.boundingRect())
         ratio = min([rect.width()/br.width(), rect.height()/br.height()])
         painter.save()
         painter.translate(rect.center())
         painter.scale(ratio, ratio)
         isPinPointEnabled = self.__data.isPinPointEnabled
         self.__data.isPinPointEnabled = False
         pos = QPointF()
         self.renderSymbols(painter, pos, 1)
         self.__data.isPinPointEnabled = isPinPointEnabled
         painter.restore()

# 需要导入模块: from qwt.qt.QtCore import QRectF [as 别名]
# 或者: from qwt.qt.QtCore.QRectF import moveCenter [as 别名]
    def boundingRect(self):
        """
        Calculate the bounding rectangle for a symbol at position (0,0).

        :return: Bounding rectangle
        """
        rect = QRectF()
        pinPointTranslation = False
        if self.__data.style in (QwtSymbol.Ellipse, QwtSymbol.Rect,
                                 QwtSymbol.Hexagon):
            pw = 0.
            if self.__data.pen.style() != Qt.NoPen:
                pw = max([self.__data.pen.widthF(), 1.])
            rect.setSize(self.__data.size+QSizeF(pw, pw))
            rect.moveCenter(QPointF(0., 0.))
        elif self.__data.style in (QwtSymbol.XCross, QwtSymbol.Diamond,
                                   QwtSymbol.Triangle, QwtSymbol.UTriangle,
                                   QwtSymbol.DTriangle, QwtSymbol.RTriangle,
                                   QwtSymbol.LTriangle, QwtSymbol.Star1,
                                   QwtSymbol.Star2):
            pw = 0.
            if self.__data.pen.style() != Qt.NoPen:
                pw = max([self.__data.pen.widthF(), 1.])
            rect.setSize(QSizeF(self.__data.size)+QSizeF(2*pw, 2*pw))
            rect.moveCenter(QPointF(0., 0.))
        elif self.__data.style == QwtSymbol.Path:
            if self.__data.path.graphic.isNull():
                self.__data.path.graphic = qwtPathGraphic(
                    self.__data.path.path, self.__data.pen, self.__data.brush)
            rect = qwtScaleBoundingRect(self.__data.path.graphic,
                                        self.__data.size)
            pinPointTranslation = True
        elif self.__data.style == QwtSymbol.Pixmap:
            if self.__data.size.isEmpty():
                rect.setSize(self.__data.pixmap.pixmap.size())
            else:
                rect.setSize(self.__data.size)
            pinPointTranslation = True
        elif self.__data.style == QwtSymbol.Graphic:
            rect = qwtScaleBoundingRect(self.__data.graphic.graphic,
                                        self.__data.size)
            pinPointTranslation = True
        elif self.__data.style == QwtSymbol.SvgDocument:
            if self.__data.svg.renderer is not None:
                rect = self.__data.svg.renderer.viewBoxF()
            if self.__data.size.isValid() and not rect.isEmpty():
                sz = QSizeF(rect.size())
                sx = self.__data.size.width()/sz.width()
                sy = self.__data.size.height()/sz.height()
                transform = QTransform()
                transform.scale(sx, sy)
                rect = transform.mapRect(rect)
            pinPointTranslation = True
        else:
            rect.setSize(self.__data.size)
            rect.moveCenter(QPointF(0., 0.))
        if pinPointTranslation:
            pinPoint = QPointF(0., 0.)
            if self.__data.isPinPointEnabled:
                pinPoint = rect.center()-self.__data.pinPoint
            rect.moveCenter(pinPoint)
        r = QRect()
        r.setLeft(np.floor(rect.left()))
        r.setTop(np.floor(rect.top()))
        r.setRight(np.floor(rect.right()))
        r.setBottom(np.floor(rect.bottom()))
        if self.__data.style != QwtSymbol.Pixmap:
            r.adjust(-1, -1, 1, 1)
        return r

# 需要导入模块: from qwt.qt.QtCore import QRectF [as 别名]
# 或者: from qwt.qt.QtCore.QRectF import moveCenter [as 别名]

#.........这里部分代码省略.........
         :param QRectF rect: Rectangle for the scaled graphic
         :param Qt.AspectRatioMode aspectRatioMode: Mode how to scale        
     
     .. py:method:: render(painter, pos, aspectRatioMode)
     
         Replay all recorded painter commands
         
         The graphic is scaled to the :py:meth:`defaultSize()` and aligned
         to a position.
         
         :param QPainter painter: Qt painter
         :param QPointF pos: Reference point, where to render
         :param Qt.AspectRatioMode aspectRatioMode: Mode how to scale        
     """
     if len(args) == 1:
         painter, = args
         if self.isNull():
             return
         transform = painter.transform()
         painter.save()
         for command in self.__data.commands:
             qwtExecCommand(painter, command, self.__data.renderHints,
                            transform, self.__data.initialTransform)
         painter.restore()
     elif len(args) in (2, 3) and isinstance(args[1], QSizeF):
         painter, size = args[:2]
         aspectRatioMode = Qt.IgnoreAspectRatio
         if len(args) == 3:
             aspectRatioMode = args[-1]
         r = QRectF(0., 0., size.width(), size.height())
         self.render(painter, r, aspectRatioMode)
     elif len(args) in (2, 3) and isinstance(args[1], QRectF):
         painter, rect = args[:2]
         aspectRatioMode = Qt.IgnoreAspectRatio
         if len(args) == 3:
             aspectRatioMode = args[-1]
         if self.isEmpty() or rect.isEmpty():
             return
         sx = 1.
         sy = 1.
         if self.__data.pointRect.width() > 0.:
             sx = rect.width()/self.__data.pointRect.width()
         if self.__data.pointRect.height() > 0.:
             sy = rect.height()/self.__data.pointRect.height()
         scalePens = not bool(self.__data.renderHints & self.RenderPensUnscaled)
         for info in self.__data.pathInfos:
             ssx = info.scaleFactorX(self.__data.pointRect, rect, scalePens)
             if ssx > 0.:
                 sx = min([sx, ssx])
             ssy = info.scaleFactorY(self.__data.pointRect, rect, scalePens)
             if ssy > 0.:
                 sy = min([sy, ssy])
         if aspectRatioMode == Qt.KeepAspectRatio:
             s = min([sx, sy])
             sx = s
             sy = s
         elif aspectRatioMode == Qt.KeepAspectRatioByExpanding:
             s = max([sx, sy])
             sx = s
             sy = s
         tr = QTransform()
         tr.translate(rect.center().x()-.5*sx*self.__data.pointRect.width(),
                      rect.center().y()-.5*sy*self.__data.pointRect.height())
         tr.scale(sx, sy)
         tr.translate(-self.__data.pointRect.x(),
                      -self.__data.pointRect.y())
         transform = painter.transform()
         if not scalePens and transform.isScaling():
             #  we don't want to scale pens according to sx/sy,
             #  but we want to apply the scaling from the 
             #  painter transformation later
             self.__data.initialTransform = QTransform()
             self.__data.initialTransform.scale(transform.m11(),
                                                transform.m22())
         painter.setTransform(tr, True)
         self.render(painter)
         painter.setTransform(transform)
         self.__data.initialTransform = None
     elif len(args) in (2, 3) and isinstance(args[1], QPointF):
         painter, pos = args[:2]
         alignment = Qt.AlignTop|Qt.AlignLeft
         if len(args) == 3:
             alignment = args[-1]
         r = QRectF(pos, self.defaultSize())
         if alignment & Qt.AlignLeft:
             r.moveLeft(pos.x())
         elif alignment & Qt.AlignHCenter:
             r.moveCenter(QPointF(pos.x(), r.center().y()))
         elif alignment & Qt.AlignRight:
             r.moveRight(pos.x())
         if alignment & Qt.AlignTop:
             r.moveTop(pos.y())
         elif alignment & Qt.AlignVCenter:
             r.moveCenter(QPointF(r.center().x(), pos.y()))
         elif alignment & Qt.AlignBottom:
             r.moveBottom(pos.y())
         self.render(painter, r)
     else:
         raise TypeError("%s().render() takes 1, 2 or 3 argument(s) (%s "\
                         "given)" % (self.__class__.__name__, len(args)))