def drawSymbols(self, painter, symbol, xMap, yMap, canvasRect, from_, to):
"""
Draw symbols
:param QPainter painter: Painter
:param qwt.symbol.QwtSymbol symbol: Curve symbol
:param qwt.scale_map.QwtScaleMap xMap: Maps x-values into pixel coordinates.
:param qwt.scale_map.QwtScaleMap yMap: Maps y-values into pixel coordinates.
:param QRectF canvasRect: Contents rectangle of the canvas
:param int from_: Index of the first point to be painted
:param int to: Index of the last point to be painted. If to < 0 the curve will be painted to its last point.
.. seealso::
:py:meth:`setSymbol()`, :py:meth:`drawSeries()`,
:py:meth:`drawCurve()`
"""
mapper = QwtPointMapper()
mapper.setFlag(QwtPointMapper.RoundPoints,
QwtPainter.roundingAlignment(painter))
mapper.setFlag(QwtPointMapper.WeedOutPoints,
self.testPaintAttribute(QwtPlotCurve.FilterPoints))
mapper.setBoundingRect(canvasRect)
chunkSize = 500
for i in range(from_, to + 1, chunkSize):
n = min([chunkSize, to - i + 1])
points = mapper.toPointsF(xMap, yMap, self.data(), i, i + n - 1)
if points.size() > 0:
symbol.drawSymbols(painter, points)
def drawSymbols(self, painter, symbol, xMap, yMap, canvasRect, from_, to):
"""
Draw symbols
:param QPainter painter: Painter
:param qwt.symbol.QwtSymbol symbol: Curve symbol
:param qwt.scale_map.QwtScaleMap xMap: Maps x-values into pixel coordinates.
:param qwt.scale_map.QwtScaleMap yMap: Maps y-values into pixel coordinates.
:param QRectF canvasRect: Contents rectangle of the canvas
:param int from_: Index of the first point to be painted
:param int to: Index of the last point to be painted. If to < 0 the curve will be painted to its last point.
.. seealso::
:py:meth:`setSymbol()`, :py:meth:`drawSeries()`,
:py:meth:`drawCurve()`
"""
mapper = QwtPointMapper()
mapper.setFlag(QwtPointMapper.RoundPoints,
QwtPainter.roundingAlignment(painter))
mapper.setFlag(QwtPointMapper.WeedOutPoints,
self.testPaintAttribute(QwtPlotCurve.FilterPoints))
mapper.setBoundingRect(canvasRect)
chunkSize = 500
for i in range(from_, to+1, chunkSize):
n = min([chunkSize, to-i+1])
points = mapper.toPointsF(xMap, yMap, self.data(), i, i+n-1)
if points.size() > 0:
symbol.drawSymbols(painter, points)
def drawLines(self, painter, xMap, yMap, canvasRect, from_, to):
"""
Draw lines
:param QPainter painter: Painter
:param qwt.scale_map.QwtScaleMap xMap: Maps x-values into pixel coordinates.
:param qwt.scale_map.QwtScaleMap yMap: Maps y-values into pixel coordinates.
:param QRectF canvasRect: Contents rectangle of the canvas
:param int from_: Index of the first point to be painted
:param int to: Index of the last point to be painted. If to < 0 the curve will be painted to its last point.
.. seealso::
:py:meth:`draw()`, :py:meth:`drawDots()`,
:py:meth:`drawSteps()`, :py:meth:`drawSticks()`
"""
if from_ > to:
return
doAlign = QwtPainter.roundingAlignment(painter)
doFill = self.__data.brush.style() != Qt.NoBrush\
and self.__data.brush.color().alpha() > 0
clipRect = QRectF()
if self.__data.paintAttributes & self.ClipPolygons:
pw = max([1., painter.pen().widthF()])
clipRect = canvasRect.adjusted(-pw, -pw, pw, pw)
doIntegers = False
if QT_VERSION < 0x040800:
if painter.paintEngine().type() == QPaintEngine.Raster:
if not doFill:
doIntegers = True
noDuplicates = self.__data.paintAttributes & self.FilterPoints
mapper = QwtPointMapper()
mapper.setFlag(QwtPointMapper.RoundPoints, doAlign)
mapper.setFlag(QwtPointMapper.WeedOutPoints, noDuplicates)
mapper.setBoundingRect(canvasRect)
if doIntegers:
polyline = mapper.toPolygon(xMap, yMap, self.data(), from_, to)
if self.__data.paintAttributes & self.ClipPolygons:
polyline = QwtClipper().clipPolygon(clipRect.toAlignedRect(),
polyline, False)
QwtPainter.drawPolyline(painter, polyline)
else:
polyline = mapper.toPolygonF(xMap, yMap, self.data(), from_, to)
if doFill:
if painter.pen().style() != Qt.NoPen:
filled = QPolygonF(polyline)
self.fillCurve(painter, xMap, yMap, canvasRect, filled)
filled.clear()
if self.__data.paintAttributes & self.ClipPolygons:
polyline = QwtClipper().clipPolygonF(clipRect,
polyline, False)
QwtPainter.drawPolyline(painter, polyline)
else:
self.fillCurve(painter, xMap, yMap, canvasRect, polyline)
else:
if self.__data.paintAttributes & self.ClipPolygons:
polyline = QwtClipper().clipPolygonF(clipRect, polyline,
False)
QwtPainter.drawPolyline(painter, polyline)
def drawLines(self, painter, xMap, yMap, canvasRect, from_, to):
"""
Draw lines
:param QPainter painter: Painter
:param qwt.scale_map.QwtScaleMap xMap: Maps x-values into pixel coordinates.
:param qwt.scale_map.QwtScaleMap yMap: Maps y-values into pixel coordinates.
:param QRectF canvasRect: Contents rectangle of the canvas
:param int from_: Index of the first point to be painted
:param int to: Index of the last point to be painted. If to < 0 the curve will be painted to its last point.
.. seealso::
:py:meth:`draw()`, :py:meth:`drawDots()`,
:py:meth:`drawSteps()`, :py:meth:`drawSticks()`
"""
if from_ > to:
return
doAlign = QwtPainter.roundingAlignment(painter)
doFill = self.__data.brush.style() != Qt.NoBrush\
and self.__data.brush.color().alpha() > 0
clipRect = QRectF()
if self.__data.paintAttributes & self.ClipPolygons:
pw = max([1., painter.pen().widthF()])
clipRect = canvasRect.adjusted(-pw, -pw, pw, pw)
doIntegers = False
if QT_VERSION < 0x040800:
if painter.paintEngine().type() == QPaintEngine.Raster:
if not doFill:
doIntegers = True
noDuplicates = self.__data.paintAttributes & self.FilterPoints
mapper = QwtPointMapper()
mapper.setFlag(QwtPointMapper.RoundPoints, doAlign)
mapper.setFlag(QwtPointMapper.WeedOutPoints, noDuplicates)
mapper.setBoundingRect(canvasRect)
if doIntegers:
polyline = mapper.toPolygon(xMap, yMap, self.data(), from_, to)
if self.__data.paintAttributes & self.ClipPolygons:
polyline = QwtClipper().clipPolygon(clipRect.toAlignedRect(),
polyline, False)
QwtPainter.drawPolyline(painter, polyline)
else:
polyline = mapper.toPolygonF(xMap, yMap, self.data(), from_, to)
if doFill:
if painter.pen().style() != Qt.NoPen:
filled = QPolygonF(polyline)
self.fillCurve(painter, xMap, yMap, canvasRect, filled)
filled.clear()
if self.__data.paintAttributes & self.ClipPolygons:
polyline = QwtClipper().clipPolygonF(
clipRect, polyline, False)
QwtPainter.drawPolyline(painter, polyline)
else:
self.fillCurve(painter, xMap, yMap, canvasRect, polyline)
else:
if self.__data.paintAttributes & self.ClipPolygons:
polyline = QwtClipper().clipPolygonF(
clipRect, polyline, False)
QwtPainter.drawPolyline(painter, polyline)
def drawSymbols(self, painter, symbol, xMap, yMap, canvasRect, from_, to):
mapper = QwtPointMapper()
mapper.setFlag(QwtPointMapper.RoundPoints,
QwtPainter.roundingAlignment(painter))
mapper.setFlag(QwtPointMapper.WeedOutPoints,
self.testPaintAttribute(QwtPlotCurve.FilterPoints))
mapper.setBoundingRect(canvasRect)
chunkSize = 500
for i in range(from_, to+1, chunkSize):
n = min([chunkSize, to-i+1])
points = mapper.toPointsF(xMap, yMap, self.data(), i, i+n-1)
if points.size() > 0:
symbol.drawSymbols(painter, points)
def drawSymbols(self, painter, symbol, xMap, yMap, canvasRect, from_, to):
mapper = QwtPointMapper()
mapper.setFlag(QwtPointMapper.RoundPoints,
QwtPainter.roundingAlignment(painter))
mapper.setFlag(QwtPointMapper.WeedOutPoints,
self.testPaintAttribute(QwtPlotCurve.FilterPoints))
mapper.setBoundingRect(canvasRect)
chunkSize = 500
for i in range(from_, to + 1, chunkSize):
n = min([chunkSize, to - i + 1])
points = mapper.toPointsF(xMap, yMap, self.data(), i, i + n - 1)
if points.size() > 0:
symbol.drawSymbols(painter, points)
def drawLines(self, painter, xMap, yMap, canvasRect, from_, to):
if from_ > to:
return
doAlign = QwtPainter.roundingAlignment(painter)
doFit = (self.__data.attributes & self.Fitted)\
and self.__data.curveFitter
doFill = self.__data.brush.style() != Qt.NoBrush\
and self.__data.brush.color().alpha() > 0
clipRect = QRectF()
if self.__data.paintAttributes & self.ClipPolygons:
pw = max([1., painter.pen().widthF()])
clipRect = canvasRect.adjusted(-pw, -pw, pw, pw)
doIntegers = False
if QT_VERSION < 0x040800:
if painter.paintEngine().type() == QPaintEngine.Raster:
if not doFit and not doFill:
doIntegers = True
noDuplicates = self.__data.paintAttributes & self.FilterPoints
mapper = QwtPointMapper()
mapper.setFlag(QwtPointMapper.RoundPoints, doAlign)
mapper.setFlag(QwtPointMapper.WeedOutPoints, noDuplicates)
mapper.setBoundingRect(canvasRect)
if doIntegers:
polyline = mapper.toPolygon(xMap, yMap, self.data(), from_, to)
if self.__data.paintAttributes & self.ClipPolygons:
polyline = QwtClipper().clipPolygon(clipRect.toAlignedRect(),
polyline, False)
QwtPainter.drawPolyline(painter, polyline)
else:
polyline = mapper.toPolygonF(xMap, yMap, self.data(), from_, to)
if doFit:
polyline = self.__data.curveFitter.fitCurve(polyline)
if doFill:
if painter.pen().style() != Qt.NoPen:
filled = QPolygonF(polyline)
self.fillCurve(painter, xMap, yMap, canvasRect, filled)
filled.clear()
if self.__data.paintAttributes & self.ClipPolygons:
polyline = QwtClipper().clipPolygonF(clipRect,
polyline, False)
QwtPainter.drawPolyline(painter, polyline)
else:
self.fillCurve(painter, xMap, yMap, canvasRect, polyline)
else:
if self.__data.paintAttributes & self.ClipPolygons:
polyline = QwtClipper().clipPolygonF(clipRect, polyline,
False)
QwtPainter.drawPolyline(painter, polyline)
def drawLines(self, painter, xMap, yMap, canvasRect, from_, to):
if from_ > to:
return
doAlign = QwtPainter.roundingAlignment(painter)
doFit = (self.__data.attributes & self.Fitted)\
and self.__data.curveFitter
doFill = self.__data.brush.style() != Qt.NoBrush\
and self.__data.brush.color().alpha() > 0
clipRect = QRectF()
if self.__data.paintAttributes & self.ClipPolygons:
pw = max([1., painter.pen().widthF()])
clipRect = canvasRect.adjusted(-pw, -pw, pw, pw)
doIntegers = False
if QT_VERSION < 0x040800:
if painter.paintEngine().type() == QPaintEngine.Raster:
if not doFit and not doFill:
doIntegers = True
noDuplicates = self.__data.paintAttributes & self.FilterPoints
mapper = QwtPointMapper()
mapper.setFlag(QwtPointMapper.RoundPoints, doAlign)
mapper.setFlag(QwtPointMapper.WeedOutPoints, noDuplicates)
mapper.setBoundingRect(canvasRect)
if doIntegers:
polyline = mapper.toPolygon(xMap, yMap, self.data(), from_, to)
if self.__data.paintAttributes & self.ClipPolygons:
polyline = QwtClipper().clipPolygon(clipRect.toAlignedRect(),
polyline, False)
QwtPainter.drawPolyline(painter, polyline)
else:
polyline = mapper.toPolygonF(xMap, yMap, self.data(), from_, to)
if doFit:
polyline = self.__data.curveFitter.fitCurve(polyline)
if doFill:
if painter.pen().style() != Qt.NoPen:
filled = QPolygonF(polyline)
self.fillCurve(painter, xMap, yMap, canvasRect, filled)
filled.clear()
if self.__data.paintAttributes & self.ClipPolygons:
polyline = QwtClipper().clipPolygonF(
clipRect, polyline, False)
QwtPainter.drawPolyline(painter, polyline)
else:
self.fillCurve(painter, xMap, yMap, canvasRect, polyline)
else:
if self.__data.paintAttributes & self.ClipPolygons:
polyline = QwtClipper().clipPolygonF(
clipRect, polyline, False)
QwtPainter.drawPolyline(painter, polyline)
def drawDots(self, painter, xMap, yMap, canvasRect, from_, to):
"""
Draw dots
:param QPainter painter: Painter
:param qwt.scale_map.QwtScaleMap xMap: Maps x-values into pixel coordinates.
:param qwt.scale_map.QwtScaleMap yMap: Maps y-values into pixel coordinates.
:param QRectF canvasRect: Contents rectangle of the canvas
:param int from_: Index of the first point to be painted
:param int to: Index of the last point to be painted. If to < 0 the curve will be painted to its last point.
.. seealso::
:py:meth:`draw()`, :py:meth:`drawSticks()`,
:py:meth:`drawSteps()`, :py:meth:`drawLines()`
"""
color = painter.pen().color()
if painter.pen().style() == Qt.NoPen or color.alpha() == 0:
return
doFill = self.__data.brush.style() != Qt.NoBrush\
and self.__data.brush.color().alpha() > 0
doAlign = QwtPainter.roundingAlignment(painter)
mapper = QwtPointMapper()
mapper.setBoundingRect(canvasRect)
mapper.setFlag(QwtPointMapper.RoundPoints, doAlign)
if self.__data.paintAttributes & self.FilterPoints:
if color.alpha() == 255\
and not (painter.renderHints() & QPainter.Antialiasing):
mapper.setFlag(QwtPointMapper.WeedOutPoints, True)
if doFill:
mapper.setFlag(QwtPointMapper.WeedOutPoints, False)
points = mapper.toPointsF(xMap, yMap, self.data(), from_, to)
QwtPainter.drawPoints(painter, points)
self.fillCurve(painter, xMap, yMap, canvasRect, points)
elif self.__data.paintAttributes & self.ImageBuffer:
image = mapper.toImage(xMap, yMap, self.data(), from_, to,
self.__data.pen,
painter.testRenderHint(QPainter.Antialiasing))
painter.drawImage(canvasRect.toAlignedRect(), image)
else:
if doAlign:
points = mapper.toPoints(xMap, yMap, self.data(), from_, to)
QwtPainter.drawPoints(painter, points)
else:
points = mapper.toPointsF(xMap, yMap, self.data(), from_, to)
QwtPainter.drawPoints(painter, points)
def drawDots(self, painter, xMap, yMap, canvasRect, from_, to):
"""
Draw dots
:param QPainter painter: Painter
:param qwt.scale_map.QwtScaleMap xMap: Maps x-values into pixel coordinates.
:param qwt.scale_map.QwtScaleMap yMap: Maps y-values into pixel coordinates.
:param QRectF canvasRect: Contents rectangle of the canvas
:param int from_: Index of the first point to be painted
:param int to: Index of the last point to be painted. If to < 0 the curve will be painted to its last point.
.. seealso::
:py:meth:`draw()`, :py:meth:`drawSticks()`,
:py:meth:`drawSteps()`, :py:meth:`drawLines()`
"""
color = painter.pen().color()
if painter.pen().style() == Qt.NoPen or color.alpha() == 0:
return
doFill = self.__data.brush.style() != Qt.NoBrush\
and self.__data.brush.color().alpha() > 0
doAlign = QwtPainter.roundingAlignment(painter)
mapper = QwtPointMapper()
mapper.setBoundingRect(canvasRect)
mapper.setFlag(QwtPointMapper.RoundPoints, doAlign)
if self.__data.paintAttributes & self.FilterPoints:
if color.alpha() == 255\
and not (painter.renderHints() & QPainter.Antialiasing):
mapper.setFlag(QwtPointMapper.WeedOutPoints, True)
if doFill:
mapper.setFlag(QwtPointMapper.WeedOutPoints, False)
points = mapper.toPointsF(xMap, yMap, self.data(), from_, to)
QwtPainter.drawPoints(painter, points)
self.fillCurve(painter, xMap, yMap, canvasRect, points)
elif self.__data.paintAttributes & self.ImageBuffer:
image = mapper.toImage(
xMap, yMap, self.data(), from_, to, self.__data.pen,
painter.testRenderHint(QPainter.Antialiasing))
painter.drawImage(canvasRect.toAlignedRect(), image)
else:
if doAlign:
points = mapper.toPoints(xMap, yMap, self.data(), from_, to)
QwtPainter.drawPoints(painter, points)
else:
points = mapper.toPointsF(xMap, yMap, self.data(), from_, to)
QwtPainter.drawPoints(painter, points)
def drawDots(self, painter, xMap, yMap, canvasRect, from_, to):
color = painter.pen().color()
if painter.pen().style() == Qt.NoPen or color.alpha() == 0:
return
doFill = self.__data.brush.style() != Qt.NoBrush\
and self.__data.brush.color().alpha() > 0
doAlign = QwtPainter.roundingAlignment(painter)
mapper = QwtPointMapper()
mapper.setBoundingRect(canvasRect)
mapper.setFlag(QwtPointMapper.RoundPoints, doAlign)
if self.__data.paintAttributes & self.FilterPoints:
if color.alpha() == 255\
and not (painter.renderHints() & QPainter.Antialiasing):
mapper.setFlag(QwtPointMapper.WeedOutPoints, True)
if doFill:
mapper.setFlag(QwtPointMapper.WeedOutPoints, False)
points = mapper.toPointsF(xMap, yMap, self.data(), from_, to)
QwtPainter.drawPoints(painter, points)
self.fillCurve(painter, xMap, yMap, canvasRect, points)
elif self.__data.paintAttributes & self.ImageBuffer:
image = mapper.toImage(xMap, yMap, self.data(), from_, to,
self.__data.pen,
painter.testRenderHint(QPainter.Antialiasing),
self.renderThreadCount())
painter.drawImage(canvasRect.toAlignedRect(), image)
elif self.__data.paintAttributes & self.MinimizeMemory:
series = self.data()
for i in range(from_, to+1):
sample = series.sample(i)
xi = xMap.transform(sample.x())
yi = yMap.transform(sample.y())
if doAlign:
xi = round(xi)
yi = round(yi)
QwtPainter.drawPoint(painter, QPointF(xi, yi))
else:
if doAlign:
points = mapper.toPoints(xMap, yMap, self.data(), from_, to)
QwtPainter.drawPoints(painter, points)
else:
points = mapper.toPointsF(xMap, yMap, self.data(), from_, to)
QwtPainter.drawPoints(painter, points)
def drawDots(self, painter, xMap, yMap, canvasRect, from_, to):
color = painter.pen().color()
if painter.pen().style() == Qt.NoPen or color.alpha() == 0:
return
doFill = self.__data.brush.style() != Qt.NoBrush\
and self.__data.brush.color().alpha() > 0
doAlign = QwtPainter.roundingAlignment(painter)
mapper = QwtPointMapper()
mapper.setBoundingRect(canvasRect)
mapper.setFlag(QwtPointMapper.RoundPoints, doAlign)
if self.__data.paintAttributes & self.FilterPoints:
if color.alpha() == 255\
and not (painter.renderHints() & QPainter.Antialiasing):
mapper.setFlag(QwtPointMapper.WeedOutPoints, True)
if doFill:
mapper.setFlag(QwtPointMapper.WeedOutPoints, False)
points = mapper.toPointsF(xMap, yMap, self.data(), from_, to)
QwtPainter.drawPoints(painter, points)
self.fillCurve(painter, xMap, yMap, canvasRect, points)
elif self.__data.paintAttributes & self.ImageBuffer:
image = mapper.toImage(
xMap, yMap, self.data(), from_, to, self.__data.pen,
painter.testRenderHint(QPainter.Antialiasing),
self.renderThreadCount())
painter.drawImage(canvasRect.toAlignedRect(), image)
elif self.__data.paintAttributes & self.MinimizeMemory:
series = self.data()
for i in range(from_, to + 1):
sample = series.sample(i)
xi = xMap.transform(sample.x())
yi = yMap.transform(sample.y())
if doAlign:
xi = round(xi)
yi = round(yi)
QwtPainter.drawPoint(painter, QPointF(xi, yi))
else:
if doAlign:
points = mapper.toPoints(xMap, yMap, self.data(), from_, to)
QwtPainter.drawPoints(painter, points)
else:
points = mapper.toPointsF(xMap, yMap, self.data(), from_, to)
QwtPainter.drawPoints(painter, points)