def drawSymbols(self, painter, points, numPoints=None):
"""
Render an array of symbols
Painting several symbols is more effective than drawing symbols
one by one, as a couple of layout calculations and setting of pen/brush
can be done once for the complete array.
:param QPainter painter: Painter
:param QPolygonF points: Positions of the symbols in screen coordinates
"""
#TODO: remove argument numPoints (not necessary in `PythonQwt`)
if numPoints is not None and numPoints <= 0:
return
useCache = False
if QwtPainter.roundingAlignment(painter) and\
not painter.transform().isScaling():
if self.__data.cache.policy == QwtSymbol.Cache:
useCache = True
elif self.__data.cache.policy == QwtSymbol.AutoCache:
if painter.paintEngine().type() == QPaintEngine.Raster:
useCache = True
else:
if self.__data.style in (QwtSymbol.XCross, QwtSymbol.HLine,
QwtSymbol.VLine, QwtSymbol.Cross):
pass
elif self.__data.style == QwtSymbol.Pixmap:
if not self.__data.size.isEmpty() and\
self.__data.size != self.__data.pixmap.pixmap.size():
useCache = True
else:
useCache = True
if useCache:
br = QRect(self.boundingRect())
rect = QRect(0, 0, br.width(), br.height())
if self.__data.cache.pixmap.isNull():
self.__data.cache.pixmap = QwtPainter.backingStore(
None, br.size())
self.__data.cache.pixmap.fill(Qt.transparent)
p = QPainter(self.__data.cache.pixmap)
p.setRenderHints(painter.renderHints())
p.translate(-br.topLeft())
pos = QPointF()
self.renderSymbols(p, pos, 1)
dx = br.left()
dy = br.top()
for point in points:
left = round(point.x()) + dx
top = round(point.y()) + dy
painter.drawPixmap(left, top, self.__data.cache.pixmap)
else:
painter.save()
self.renderSymbols(painter, points, numPoints)
painter.restore()
def drawSymbols(self, painter, points, numPoints=None):
"""
Render an array of symbols
Painting several symbols is more effective than drawing symbols
one by one, as a couple of layout calculations and setting of pen/brush
can be done once for the complete array.
:param QPainter painter: Painter
:param QPolygonF points: Positions of the symbols in screen coordinates
"""
#TODO: remove argument numPoints (not necessary in `PythonQwt`)
if numPoints is not None and numPoints <= 0:
return
useCache = False
if QwtPainter.roundingAlignment(painter) and\
not painter.transform().isScaling():
if self.__data.cache.policy == QwtSymbol.Cache:
useCache = True
elif self.__data.cache.policy == QwtSymbol.AutoCache:
if painter.paintEngine().type() == QPaintEngine.Raster:
useCache = True
else:
if self.__data.style in (QwtSymbol.XCross, QwtSymbol.HLine,
QwtSymbol.VLine, QwtSymbol.Cross):
pass
elif self.__data.style == QwtSymbol.Pixmap:
if not self.__data.size.isEmpty() and\
self.__data.size != self.__data.pixmap.pixmap.size():
useCache = True
else:
useCache = True
if useCache:
br = QRect(self.boundingRect())
rect = QRect(0, 0, br.width(), br.height())
if self.__data.cache.pixmap.isNull():
self.__data.cache.pixmap = QwtPainter.backingStore(None, br.size())
self.__data.cache.pixmap.fill(Qt.transparent)
p = QPainter(self.__data.cache.pixmap)
p.setRenderHints(painter.renderHints())
p.translate(-br.topLeft())
pos = QPointF()
self.renderSymbols(p, pos, 1)
dx = br.left()
dy = br.top()
for point in points:
left = round(point.x())+dx
top = round(point.y())+dy
painter.drawPixmap(left, top, self.__data.cache.pixmap)
else:
painter.save()
self.renderSymbols(painter, points, numPoints)
painter.restore()
def qwtDrawStar1Symbols(painter, points, numPoints, symbol):
size =symbol.size()
painter.setPen(symbol.pen())
sqrt1_2 = np.sqrt(.5)
if QwtPainter.roundingAlignment(painter):
r = QRect(0, 0, size.width(), size.height())
for pos in points:
r.moveCenter(pos.toPoint())
d1 = r.width()/2.*(1.-sqrt1_2)
QwtPainter.drawLine(painter,
round(r.left()+d1), round(r.top()+d1),
round(r.right()-d1), round(r.bottom()-d1))
QwtPainter.drawLine(painter,
round(r.left()+d1), round(r.bottom()-d1),
round(r.right()-d1), round(r.top()+d1))
c = QPoint(r.center())
QwtPainter.drawLine(painter, c.x(), r.top(), c.x(), r.bottom())
QwtPainter.drawLine(painter, r.left(), c.y(), r.right(), c.y())
else:
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)
QwtPainter.drawLine(painter, r.left()+d1, r.top()+d1,
r.right()-d1, r.bottom()-d1)
QwtPainter.drawLine(painter, r.left()+d1, r.bottom()-d1,
r.right()-d1, r.top()+d1)
QwtPainter.drawLine(painter, c.x(), r.top(), c.x(), r.bottom())
QwtPainter.drawLine(painter, r.left(), c.y(), r.right(), c.y())
def qwtDrawStar1Symbols(painter, points, numPoints, symbol):
size =symbol.size()
painter.setPen(symbol.pen())
sqrt1_2 = np.sqrt(.5)
if QwtPainter.roundingAlignment(painter):
r = QRect(0, 0, size.width(), size.height())
for pos in points:
r.moveCenter(pos.toPoint())
d1 = r.width()/2.*(1.-sqrt1_2)
QwtPainter.drawLine(painter,
round(r.left()+d1), round(r.top()+d1),
round(r.right()-d1), round(r.bottom()-d1))
QwtPainter.drawLine(painter,
round(r.left()+d1), round(r.bottom()-d1),
round(r.right()-d1), round(r.top()+d1))
c = QPoint(r.center())
QwtPainter.drawLine(painter, c.x(), r.top(), c.x(), r.bottom())
QwtPainter.drawLine(painter, r.left(), c.y(), r.right(), c.y())
else:
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)
QwtPainter.drawLine(painter, r.left()+d1, r.top()+d1,
r.right()-d1, r.bottom()-d1)
QwtPainter.drawLine(painter, r.left()+d1, r.bottom()-d1,
r.right()-d1, r.top()+d1)
QwtPainter.drawLine(painter, c.x(), r.top(), c.x(), r.bottom())
QwtPainter.drawLine(painter, r.left(), c.y(), r.right(), c.y())
def drawSymbols(self, painter, points, numPoints=None):
#TODO: remove argument numPoints (not necessary in Python's qwt)
if numPoints is not None and numPoints <= 0:
return
useCache = False
if QwtPainter.roundingAlignment(painter) and\
not painter.transform().isScaling():
if self.__data.cache.policy == QwtSymbol.Cache:
useCache = True
elif self.__data.cache.policy == QwtSymbol.AutoCache:
if painter.paintEngine().type() == QPaintEngine.Raster:
useCache = True
else:
if self.__data.style in (QwtSymbol.XCross, QwtSymbol.HLine,
QwtSymbol.VLine, QwtSymbol.Cross):
pass
elif self.__data.style == QwtSymbol.Pixmap:
if not self.__data.size.isEmpty() and\
self.__data.size != self.__data.pixmap.pixmap.size():
useCache = True
else:
useCache = True
if useCache:
br = QRect(self.boundingRect())
rect = QRect(0, 0, br.width(), br.height())
if self.__data.cache.pixmap.isNull():
self.__data.cache.pixmap = QwtPainter.backingStore(None, br.size())
self.__data.cache.pixmap.fill(Qt.transparent)
p = QPainter(self.__data.cache.pixmap)
p.setRenderHints(painter.renderHints())
p.translate(-br.topLeft())
pos = QPointF()
self.renderSymbols(p, pos, 1)
dx = br.left()
dy = br.top()
for point in points:
left = round(point.x())+dx
top = round(point.y())+dy
painter.drawPixmap(left, top, self.__data.cache.pixmap)
else:
painter.save()
self.renderSymbols(painter, points, numPoints)
painter.restore()