我们从Python开源项目中，提取了以下11个代码示例，用于说明如何使用PySide.QtCore.QLineF()。
def paint(self, painter, option, widget): if not self.source() or not self.dest(): return # Draw the line itself. line = QtCore.QLineF(self.sourcePoint, self.destPoint) if not(self.ColorEdgesFlag): return if line.length() == 0.0: return painter.setPen(QtGui.QPen(QtCore.Qt.black, 1, QtCore.Qt.SolidLine, QtCore.Qt.RoundCap, QtCore.Qt.RoundJoin)) painter.drawLine(line) painter.setBrush(QtCore.Qt.black)
def _draw_reticle(self): if self._reticle is None or (self._reticle.size() != self.size()): self._new_reticle() dbm_lines = [QLineF(self._hz_to_x(self._low_frequency), self._dbm_to_y(dbm), self._hz_to_x(self._high_frequency), self._dbm_to_y(dbm)) for dbm in numpy.arange(self._low_dbm, self._high_dbm, 20.0)] dbm_labels = [(dbm, QPointF(self._hz_to_x(self._low_frequency) + 2, self._dbm_to_y(dbm) - 2)) for dbm in numpy.arange(self._low_dbm, self._high_dbm, 20.0)] frequency_lines = [QLineF(self._hz_to_x(frequency), self._dbm_to_y(self._high_dbm), self._hz_to_x(frequency), self._dbm_to_y(self._low_dbm)) for frequency in numpy.arange(self._low_frequency, self._high_frequency, self._frequency_step * 20.0)] frequency_labels = [(frequency, QPointF(self._hz_to_x(frequency) + 2, self._dbm_to_y(self._high_dbm) + 10)) for frequency in numpy.arange(self._low_frequency, self._high_frequency, self._frequency_step * 10.0)] painter = QtGui.QPainter(self._reticle) try: painter.setRenderHint(QtGui.QPainter.Antialiasing) painter.setPen(Qt.blue) # TODO: Removed to support old (<1.0) PySide API in Ubuntu 10.10 #painter.drawLines(dbm_lines) for dbm_line in dbm_lines: painter.drawLine(dbm_line) # TODO: Removed to support old (<1.0) PySide API in Ubuntu 10.10 #painter.drawLines(frequency_lines) for frequency_line in frequency_lines: painter.drawLine(frequency_line) painter.setPen(Qt.white) for dbm, point in dbm_labels: painter.drawText(point, '%+.0f' % dbm) for frequency, point in frequency_labels: painter.drawText(point, '%.02f' % (frequency / 1e6)) finally: painter.end()
def adjust(self): if not self.source() or not self.dest(): return line = QtCore.QLineF(self.mapFromItem(self.source(), 0, 0), self.mapFromItem(self.dest(), 0, 0)) self.sourcePoint = line.p1() #+ edgeOffset self.destPoint = line.p2() #- edgeOffset
def adjust(self): if not self.source() or not self.dest(): return line = QtCore.QLineF(self.mapFromItem(self.source(), 0, 0), self.mapFromItem(self.dest(), 0, 0)) length = line.length() if length == 0.0: return edgeOffset = QtCore.QPointF((line.dx() * 10) / length, (line.dy() * 10) / length) self.prepareGeometryChange() self.sourcePoint = line.p1() + edgeOffset self.destPoint = line.p2() - edgeOffset
def adjust(self): if not self.source() or not self.dest(): return # if self.weight == 0: # return line = QtCore.QLineF(self.mapFromItem(self.source(), 0, 0), self.mapFromItem(self.dest(), 0, 0)) self.sourcePoint = line.p1() #+ edgeOffset self.destPoint = line.p2() #- edgeOffset
def __init__(self, parent): QtGui.QGraphicsItem.__init__(self, parent=parent) self.p1 = QtCore.QPointF() self.p2 = QtCore.QPointF() self.line = QtCore.QLineF(self.p1, self.p2) self.setOrientation(0., 0.) self.setZValue(10000)
def paint(self, painter, option, widget): if not self.source() or not self.dest(): return # Draw the line itself. if self.ColorOnlySelectedNodesFlag: if not(self.ColorEdgesFlag): return line = QtCore.QLineF(self.sourcePoint, self.destPoint) # Should FIX the thickness values!!! fix me painter.save() """ Painting the edge colors based on various factors Not painting the edges if they are below certain threshold Painting the edges to be black or just based on their colors Painting highlighted colormaps edge Thickness is a function of the weight of the edges drawing z values so that they do not overalpp with others """ if self.ForCommunities: painter.setPen(QtGui.QPen(self.communtiyColor1 ,self.communityWeight , QtCore.Qt.SolidLine, QtCore.Qt.RoundCap, QtCore.Qt.RoundJoin)) painter.drawLine(line) else: if self.ColorMap: if self.EdgeThreshold < self.weight: if not(self.ColorEdgesFlag): self.setZValue(1) self.EdgeColor.setAlpha(70) painter.setPen(QtGui.QPen(self.EdgeColor ,self.edgeThickness , QtCore.Qt.SolidLine, QtCore.Qt.RoundCap, QtCore.Qt.RoundJoin)) painter.drawLine(line) else: self.setZValue(2) if not(self.HighlightedColorMap): # pointer to green painter.setPen(QtGui.QPen(QtCore.Qt.darkGreen, self.edgeThickness , QtCore.Qt.SolidLine, QtCore.Qt.RoundCap, QtCore.Qt.RoundJoin)) else: self.EdgeColor.setAlpha(255) painter.setPen(QtGui.QPen(self.EdgeColor, self.thickHighlightedEdges , QtCore.Qt.SolidLine, QtCore.Qt.RoundCap, QtCore.Qt.RoundJoin)) painter.drawLine(line) else: if self.EdgeThreshold < self.weight: if not(self.ColorEdgesFlag): self.setZValue(1) painter.setPen(QtGui.QPen(self.EdgeColor ,self.edgeThickness , QtCore.Qt.SolidLine, QtCore.Qt.RoundCap, QtCore.Qt.RoundJoin)) painter.drawLine(line) else: self.setZValue(2) if not(self.HighlightedColorMap): painter.setPen(QtGui.QPen(QtCore.Qt.darkGreen, self.edgeThickness , QtCore.Qt.SolidLine, QtCore.Qt.RoundCap, QtCore.Qt.RoundJoin)) else: painter.setPen(QtGui.QPen(self.EdgeColor, self.thickHighlightedEdges , QtCore.Qt.SolidLine, QtCore.Qt.RoundCap, QtCore.Qt.RoundJoin)) painter.drawLine(line) painter.restore()
