Python QRectF.center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 center [as 别名]
 def drawPath(self, path):
     rect = QRectF(QPointF(0., 0.), self.__size)
     if path.controlPointRect().contains(rect.center()):
         self.setCornerRects(path)
         self.alignCornerRects(rect)
         self.background.path = path
         self.background.brush = self.__brush
         self.background.origin = self.__origin
     else:
         self.border.pathlist += [path]

# 需要导入模块: from qwt.qt.QtCore import QRectF [as 别名]
# 或者: from qwt.qt.QtCore.QRectF import center [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 center [as 别名]
def qwtDrawSvgSymbols(painter, points, numPoints, renderer, symbol):
    if renderer is None or not renderer.isValid():
        return
    viewBox = QRectF(renderer.viewBoxF())
    if viewBox.isEmpty():
        return
    sz = QSizeF(symbol.size())
    if not sz.isValid():
        sz = viewBox.size()
    sx = sz.width()/viewBox.width()
    sy = sz.height()/viewBox.height()
    pinPoint = QPointF(viewBox.center())
    if symbol.isPinPointEnabled():
        pinPoint = symbol.pinPoint()
    dx = sx*(pinPoint.x()-viewBox.left())
    dy = sy*(pinPoint.y()-viewBox.top())
    for pos in points:
        x = pos.x()-dx
        y = pos.y()-dy
        renderer.render(painter, QRectF(x, y, sz.width(), sz.height()))

# 需要导入模块: from qwt.qt.QtCore import QRectF [as 别名]
# 或者: from qwt.qt.QtCore.QRectF import center [as 别名]
def qwtDrawGraphicSymbols(painter, points, numPoint, graphic, symbol):
    pointRect = QRectF(graphic.controlPointRect())
    if pointRect.isEmpty():
        return
    sx = 1.
    sy = 1.
    sz = symbol.size()
    if sz.isValid():
        sx = sz.width()/pointRect.width()
        sy = sz.height()/pointRect.height()
    pinPoint = QPointF(pointRect.center())
    if symbol.isPinPointEnabled():
        pinPoint = symbol.pinPoint()
    transform = QTransform(painter.transform())
    for pos in points:
        tr = QTransform(transform)
        tr.translate(pos.x(), pos.y())
        tr.scale(sx, sy)
        tr.translate(-pinPoint.x(), -pinPoint.y())
        painter.setTransform(tr)
        graphic.render(painter)
    painter.setTransform(transform)

# 需要导入模块: from qwt.qt.QtCore import QRectF [as 别名]
# 或者: from qwt.qt.QtCore.QRectF import center [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 center [as 别名]
 def render(self, *args):
     """
     .. py:method:: render(painter)
     
         Replay all recorded painter commands
         
         :param QPainter painter: Qt painter
     
     .. py:method:: render(painter, size, aspectRatioMode)
     
         Replay all recorded painter commands
         
         The graphic is scaled to fit into the rectangle
         of the given size starting at ( 0, 0 ).
         
         :param QPainter painter: Qt painter
         :param QSizeF size: Size for the scaled graphic
         :param Qt.AspectRatioMode aspectRatioMode: Mode how to scale
     
     .. py:method:: render(painter, rect, aspectRatioMode)
     
         Replay all recorded painter commands
         
         The graphic is scaled to fit into the given rectangle
         
         :param QPainter painter: Qt painter
         :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())
#.........这里部分代码省略.........