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Merge pull request #1297 from campagnola/acq4-merge2

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ArrowItem performance
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Luke Campagnola 2020-07-06 03:59:41 -07:00 committed by GitHub
commit 49dd944d10
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1 changed files with 21 additions and 6 deletions
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pyqtgraph/graphicsItems/ArrowItem.py
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@ -23,10 +23,11 @@ class ArrowItem(QtGui.QGraphicsPathItem):
opts['headLen'] = opts['size'] opts['headLen'] = opts['size']
if 'width' in opts: if 'width' in opts:
opts['headWidth'] = opts['width'] opts['headWidth'] = opts['width']
pos = opts.pop('pos', (0, 0))
defaultOpts = { defaultOpts = {
'pxMode': True, 'pxMode': True,
'angle': -150, ## If the angle is 0, the arrow points left 'angle': -150, ## If the angle is 0, the arrow points left
'pos': (0,0),
'headLen': 20, 'headLen': 20,
'headWidth': None, 'headWidth': None,
'tipAngle': 25, 'tipAngle': 25,
@ -40,7 +41,8 @@ class ArrowItem(QtGui.QGraphicsPathItem):
self.setStyle(**defaultOpts) self.setStyle(**defaultOpts)
self.moveBy(*self.opts['pos']) # for backward compatibility
self.setPos(*pos)
def setStyle(self, **opts): def setStyle(self, **opts):
""" """
@ -67,11 +69,25 @@ class ArrowItem(QtGui.QGraphicsPathItem):
tailWidth Width of the tail. default=3 tailWidth Width of the tail. default=3
pen The pen used to draw the outline of the arrow. pen The pen used to draw the outline of the arrow.
brush The brush used to fill the arrow. brush The brush used to fill the arrow.
pxMode If True, then the arrow is drawn as a fixed size
regardless of the scale of its parents (including
the ViewBox zoom level).
====================== ================================================= ====================== =================================================
""" """
self.opts.update(opts) arrowOpts = ['headLen', 'tipAngle', 'baseAngle', 'tailLen', 'tailWidth', 'headWidth']
allowedOpts = ['angle', 'pen', 'brush', 'pxMode'] + arrowOpts
needUpdate = False
for k,v in opts.items():
if k not in allowedOpts:
raise KeyError('Invalid arrow style option "%s"' % k)
if self.opts.get(k) != v:
needUpdate = True
self.opts[k] = v
opt = dict([(k,self.opts[k]) for k in ['headLen', 'headWidth', 'tipAngle', 'baseAngle', 'tailLen', 'tailWidth']]) if not needUpdate:
return
opt = dict([(k,self.opts[k]) for k in arrowOpts if k in self.opts])
tr = QtGui.QTransform() tr = QtGui.QTransform()
tr.rotate(self.opts['angle']) tr.rotate(self.opts['angle'])
self.path = tr.map(fn.makeArrowPath(**opt)) self.path = tr.map(fn.makeArrowPath(**opt))
@ -86,7 +102,6 @@ class ArrowItem(QtGui.QGraphicsPathItem):
else: else:
self.setFlags(self.flags() & ~self.ItemIgnoresTransformations) self.setFlags(self.flags() & ~self.ItemIgnoresTransformations)
def paint(self, p, *args): def paint(self, p, *args):
p.setRenderHint(QtGui.QPainter.Antialiasing) p.setRenderHint(QtGui.QPainter.Antialiasing)
QtGui.QGraphicsPathItem.paint(self, p, *args) QtGui.QGraphicsPathItem.paint(self, p, *args)