378 lines
13 KiB
Python
378 lines
13 KiB
Python
|
from pyqtgraph.Qt import QtGui, QtCore
|
||
|
|
from pyqtgraph.Point import Point
|
||
|
|
import pyqtgraph.functions as fn
|
||
|
|
from GraphicsObject import GraphicsObject
|
||
|
|
|
||
|
|
__all__ = ['ScatterPlotItem', 'SpotItem']
|
||
|
|
class ScatterPlotItem(GraphicsObject):
|
||
|
|
|
||
|
|
#sigPointClicked = QtCore.Signal(object, object)
|
||
|
|
sigClicked = QtCore.Signal(object, object) ## self, points
|
||
|
|
sigPlotChanged = QtCore.Signal(object)
|
||
|
|
|
||
|
|
def __init__(self, spots=None, x=None, y=None, pxMode=True, pen='default', brush='default', size=7,
|
||
|
|
symbol=None, identical=False, data=None):
|
||
|
|
|
||
|
|
"""
|
||
|
|
Arguments:
|
||
|
|
spots: list of dicts. Each dict specifies parameters for a single spot:
|
||
|
|
{'pos': (x,y), 'size', 'pen', 'brush', 'symbol'}
|
||
|
|
x,y: array of x,y values. Alternatively, specify spots['pos'] = (x,y)
|
||
|
|
pxMode: If True, spots are always the same size regardless of scaling, and size is given in px.
|
||
|
|
Otherwise, size is in scene coordinates and the spots scale with the view.
|
||
|
|
identical: If True, all spots are forced to look identical.
|
||
|
|
This can result in performance enhancement.
|
||
|
|
|
||
|
|
symbol can be one of:
|
||
|
|
'o' circle
|
||
|
|
's' square
|
||
|
|
't' triangle
|
||
|
|
'd' diamond
|
||
|
|
'+' plus
|
||
|
|
"""
|
||
|
|
|
||
|
|
|
||
|
|
GraphicsObject.__init__(self)
|
||
|
|
self.spots = []
|
||
|
|
self.range = [[0,0], [0,0]]
|
||
|
|
self.identical = identical
|
||
|
|
self._spotPixmap = None
|
||
|
|
|
||
|
|
if brush == 'default':
|
||
|
|
self.brush = QtGui.QBrush(QtGui.QColor(100, 100, 150))
|
||
|
|
else:
|
||
|
|
self.brush = fn.mkBrush(brush)
|
||
|
|
|
||
|
|
if pen == 'default':
|
||
|
|
self.pen = QtGui.QPen(QtGui.QColor(200, 200, 200))
|
||
|
|
else:
|
||
|
|
self.pen = fn.mkPen(pen)
|
||
|
|
|
||
|
|
self.symbol = symbol
|
||
|
|
self.size = size
|
||
|
|
|
||
|
|
self.pxMode = pxMode
|
||
|
|
if spots is not None or x is not None:
|
||
|
|
self.setPoints(spots, x, y, data)
|
||
|
|
|
||
|
|
#self.optimize = optimize
|
||
|
|
#if optimize:
|
||
|
|
#self.spotImage = QtGui.QImage(size, size, QtGui.QImage.Format_ARGB32_Premultiplied)
|
||
|
|
#self.spotImage.fill(0)
|
||
|
|
#p = QtGui.QPainter(self.spotImage)
|
||
|
|
#p.setRenderHint(p.Antialiasing)
|
||
|
|
#p.setBrush(brush)
|
||
|
|
#p.setPen(pen)
|
||
|
|
#p.drawEllipse(0, 0, size, size)
|
||
|
|
#p.end()
|
||
|
|
#self.optimizePixmap = QtGui.QPixmap(self.spotImage)
|
||
|
|
#self.optimizeFragments = []
|
||
|
|
#self.setFlags(self.flags() | self.ItemIgnoresTransformations)
|
||
|
|
|
||
|
|
def implements(self, interface=None):
|
||
|
|
ints = ['plotData']
|
||
|
|
if interface is None:
|
||
|
|
return ints
|
||
|
|
return interface in ints
|
||
|
|
|
||
|
|
def setPxMode(self, mode):
|
||
|
|
self.pxMode = mode
|
||
|
|
|
||
|
|
def clear(self):
|
||
|
|
for i in self.spots:
|
||
|
|
i.setParentItem(None)
|
||
|
|
s = i.scene()
|
||
|
|
if s is not None:
|
||
|
|
s.removeItem(i)
|
||
|
|
self.spots = []
|
||
|
|
|
||
|
|
|
||
|
|
def getRange(self, ax, percent):
|
||
|
|
return self.range[ax]
|
||
|
|
|
||
|
|
def setPoints(self, spots=None, x=None, y=None, data=None):
|
||
|
|
"""
|
||
|
|
Remove all existing points in the scatter plot and add a new set.
|
||
|
|
Arguments:
|
||
|
|
spots - list of dicts specifying parameters for each spot
|
||
|
|
[ {'pos': (x,y), 'pen': 'r', ...}, ...]
|
||
|
|
x, y - arrays specifying location of spots to add.
|
||
|
|
all other parameters (pen, symbol, etc.) will be set to the default
|
||
|
|
values for this scatter plot.
|
||
|
|
these arguments are IGNORED if 'spots' is specified
|
||
|
|
data - list of arbitrary objects to be assigned to spot.data for each spot
|
||
|
|
(this is useful for identifying spots that are clicked on)
|
||
|
|
"""
|
||
|
|
self.clear()
|
||
|
|
self.range = [[0,0],[0,0]]
|
||
|
|
self.addPoints(spots, x, y, data)
|
||
|
|
|
||
|
|
def addPoints(self, spots=None, x=None, y=None, data=None):
|
||
|
|
xmn = ymn = xmx = ymx = None
|
||
|
|
if spots is not None:
|
||
|
|
n = len(spots)
|
||
|
|
else:
|
||
|
|
n = len(x)
|
||
|
|
|
||
|
|
for i in range(n):
|
||
|
|
if spots is not None:
|
||
|
|
s = spots[i]
|
||
|
|
pos = Point(s['pos'])
|
||
|
|
else:
|
||
|
|
s = {}
|
||
|
|
pos = Point(x[i], y[i])
|
||
|
|
if data is not None:
|
||
|
|
s['data'] = data[i]
|
||
|
|
|
||
|
|
size = s.get('size', self.size)
|
||
|
|
if self.pxMode:
|
||
|
|
psize = 0
|
||
|
|
else:
|
||
|
|
psize = size
|
||
|
|
if xmn is None:
|
||
|
|
xmn = pos[0]-psize
|
||
|
|
xmx = pos[0]+psize
|
||
|
|
ymn = pos[1]-psize
|
||
|
|
ymx = pos[1]+psize
|
||
|
|
else:
|
||
|
|
xmn = min(xmn, pos[0]-psize)
|
||
|
|
xmx = max(xmx, pos[0]+psize)
|
||
|
|
ymn = min(ymn, pos[1]-psize)
|
||
|
|
ymx = max(ymx, pos[1]+psize)
|
||
|
|
#print pos, xmn, xmx, ymn, ymx
|
||
|
|
brush = s.get('brush', self.brush)
|
||
|
|
pen = s.get('pen', self.pen)
|
||
|
|
pen.setCosmetic(True)
|
||
|
|
symbol = s.get('symbol', self.symbol)
|
||
|
|
data2 = s.get('data', None)
|
||
|
|
item = self.mkSpot(pos, size, self.pxMode, brush, pen, data2, symbol=symbol, index=len(self.spots))
|
||
|
|
self.spots.append(item)
|
||
|
|
#if self.optimize:
|
||
|
|
#item.hide()
|
||
|
|
#frag = QtGui.QPainter.PixmapFragment.create(pos, QtCore.QRectF(0, 0, size, size))
|
||
|
|
#self.optimizeFragments.append(frag)
|
||
|
|
self.range = [[xmn, xmx], [ymn, ymx]]
|
||
|
|
|
||
|
|
#def setPointSize(self, size):
|
||
|
|
#for s in self.spots:
|
||
|
|
#s.size = size
|
||
|
|
##self.setPoints([{'size':s.size, 'pos':s.pos(), 'data':s.data} for s in self.spots])
|
||
|
|
#self.setPoints()
|
||
|
|
|
||
|
|
#def paint(self, p, *args):
|
||
|
|
#if not self.optimize:
|
||
|
|
#return
|
||
|
|
##p.setClipRegion(self.boundingRect())
|
||
|
|
#p.drawPixmapFragments(self.optimizeFragments, self.optimizePixmap)
|
||
|
|
|
||
|
|
def paint(self, *args):
|
||
|
|
pass
|
||
|
|
|
||
|
|
def spotPixmap(self):
|
||
|
|
## If all spots are identical, return the pixmap to use for all spots
|
||
|
|
## Otherwise return None
|
||
|
|
|
||
|
|
if not self.identical:
|
||
|
|
return None
|
||
|
|
if self._spotPixmap is None:
|
||
|
|
#print 'spotPixmap'
|
||
|
|
spot = SpotItem(size=self.size, pxMode=True, brush=self.brush, pen=self.pen, symbol=self.symbol)
|
||
|
|
#self._spotPixmap = PixmapSpotItem.makeSpotImage(self.size, self.pen, self.brush, self.symbol)
|
||
|
|
self._spotPixmap = spot.pixmap
|
||
|
|
return self._spotPixmap
|
||
|
|
|
||
|
|
def mkSpot(self, pos, size, pxMode, brush, pen, data, symbol=None, index=None):
|
||
|
|
## Make and return a SpotItem (or PixmapSpotItem if in pxMode)
|
||
|
|
|
||
|
|
brush = fn.mkBrush(brush)
|
||
|
|
pen = fn.mkPen(pen)
|
||
|
|
if pxMode:
|
||
|
|
img = self.spotPixmap() ## returns None if not using identical mode
|
||
|
|
#item = PixmapSpotItem(size, brush, pen, data, image=img, symbol=symbol, index=index)
|
||
|
|
item = SpotItem(size, pxMode, brush, pen, data, symbol=symbol, image=img, index=index)
|
||
|
|
else:
|
||
|
|
item = SpotItem(size, pxMode, brush, pen, data, symbol=symbol, index=index)
|
||
|
|
item.setParentItem(self)
|
||
|
|
item.setPos(pos)
|
||
|
|
#item.sigClicked.connect(self.pointClicked)
|
||
|
|
return item
|
||
|
|
|
||
|
|
def boundingRect(self):
|
||
|
|
((xmn, xmx), (ymn, ymx)) = self.range
|
||
|
|
if xmn is None or xmx is None or ymn is None or ymx is None:
|
||
|
|
return QtCore.QRectF()
|
||
|
|
return QtCore.QRectF(xmn, ymn, xmx-xmn, ymx-ymn)
|
||
|
|
#return QtCore.QRectF(xmn-1, ymn-1, xmx-xmn+2, ymx-ymn+2)
|
||
|
|
|
||
|
|
#def pointClicked(self, point):
|
||
|
|
#self.sigPointClicked.emit(self, point)
|
||
|
|
|
||
|
|
def points(self):
|
||
|
|
return self.spots[:]
|
||
|
|
|
||
|
|
def pointsAt(self, pos):
|
||
|
|
x = pos.x()
|
||
|
|
y = pos.y()
|
||
|
|
pw = self.pixelWidth()
|
||
|
|
ph = self.pixelHeight()
|
||
|
|
pts = []
|
||
|
|
for s in self.spots:
|
||
|
|
sp = s.pos()
|
||
|
|
ss = s.size
|
||
|
|
sx = sp.x()
|
||
|
|
sy = sp.y()
|
||
|
|
s2x = s2y = ss * 0.5
|
||
|
|
if self.pxMode:
|
||
|
|
s2x *= pw
|
||
|
|
s2y *= ph
|
||
|
|
if x > sx-s2x and x < sx+s2x and y > sy-s2y and y < sy+s2y:
|
||
|
|
pts.append(s)
|
||
|
|
#print "HIT:", x, y, sx, sy, s2x, s2y
|
||
|
|
#else:
|
||
|
|
#print "No hit:", (x, y), (sx, sy)
|
||
|
|
#print " ", (sx-s2x, sy-s2y), (sx+s2x, sy+s2y)
|
||
|
|
pts.sort(lambda a,b: cmp(b.zValue(), a.zValue()))
|
||
|
|
return pts
|
||
|
|
|
||
|
|
|
||
|
|
#def mousePressEvent(self, ev):
|
||
|
|
#QtGui.QGraphicsItem.mousePressEvent(self, ev)
|
||
|
|
#if ev.button() == QtCore.Qt.LeftButton:
|
||
|
|
#pts = self.pointsAt(ev.pos())
|
||
|
|
#if len(pts) > 0:
|
||
|
|
#self.mouseMoved = False
|
||
|
|
#self.ptsClicked = pts
|
||
|
|
#ev.accept()
|
||
|
|
#else:
|
||
|
|
##print "no spots"
|
||
|
|
#ev.ignore()
|
||
|
|
#else:
|
||
|
|
#ev.ignore()
|
||
|
|
|
||
|
|
#def mouseMoveEvent(self, ev):
|
||
|
|
#QtGui.QGraphicsItem.mouseMoveEvent(self, ev)
|
||
|
|
#self.mouseMoved = True
|
||
|
|
#pass
|
||
|
|
|
||
|
|
#def mouseReleaseEvent(self, ev):
|
||
|
|
#QtGui.QGraphicsItem.mouseReleaseEvent(self, ev)
|
||
|
|
#if not self.mouseMoved:
|
||
|
|
#self.sigClicked.emit(self, self.ptsClicked)
|
||
|
|
|
||
|
|
def mouseClickEvent(self, ev):
|
||
|
|
if ev.button() == QtCore.Qt.LeftButton:
|
||
|
|
pts = self.pointsAt(ev.pos())
|
||
|
|
if len(pts) > 0:
|
||
|
|
self.ptsClicked = pts
|
||
|
|
self.sigClicked.emit(self, self.ptsClicked)
|
||
|
|
ev.accept()
|
||
|
|
else:
|
||
|
|
#print "no spots"
|
||
|
|
ev.ignore()
|
||
|
|
else:
|
||
|
|
ev.ignore()
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
class SpotItem(GraphicsObject):
|
||
|
|
#sigClicked = QtCore.Signal(object)
|
||
|
|
|
||
|
|
def __init__(self, size, pxMode, brush, pen, data=None, symbol=None, image=None, index=None):
|
||
|
|
GraphicsObject.__init__(self)
|
||
|
|
self.pxMode = pxMode
|
||
|
|
|
||
|
|
if symbol is None:
|
||
|
|
symbol = 'o' ## circle by default
|
||
|
|
elif isinstance(symbol, int): ## allow symbols specified by integer for easy iteration
|
||
|
|
symbol = ['o', 's', 't', 'd', '+'][symbol]
|
||
|
|
####print 'SpotItem symbol: ', symbol
|
||
|
|
self.data = data
|
||
|
|
self.pen = pen
|
||
|
|
self.brush = brush
|
||
|
|
self.size = size
|
||
|
|
self.index = index
|
||
|
|
self.symbol = symbol
|
||
|
|
#s2 = size/2.
|
||
|
|
self.path = QtGui.QPainterPath()
|
||
|
|
if symbol == 'o':
|
||
|
|
self.path.addEllipse(QtCore.QRectF(-0.5, -0.5, 1, 1))
|
||
|
|
elif symbol == 's':
|
||
|
|
self.path.addRect(QtCore.QRectF(-0.5, -0.5, 1, 1))
|
||
|
|
elif symbol is 't' or symbol is '^':
|
||
|
|
self.path.moveTo(-0.5, -0.5)
|
||
|
|
self.path.lineTo(0, 0.5)
|
||
|
|
self.path.lineTo(0.5, -0.5)
|
||
|
|
self.path.closeSubpath()
|
||
|
|
#self.path.connectPath(self.path)
|
||
|
|
elif symbol == 'd':
|
||
|
|
self.path.moveTo(0., -0.5)
|
||
|
|
self.path.lineTo(-0.4, 0.)
|
||
|
|
self.path.lineTo(0, 0.5)
|
||
|
|
self.path.lineTo(0.4, 0)
|
||
|
|
self.path.closeSubpath()
|
||
|
|
#self.path.connectPath(self.path)
|
||
|
|
elif symbol == '+':
|
||
|
|
self.path.moveTo(-0.5, -0.01)
|
||
|
|
self.path.lineTo(-0.5, 0.01)
|
||
|
|
self.path.lineTo(-0.01, 0.01)
|
||
|
|
self.path.lineTo(-0.01, 0.5)
|
||
|
|
self.path.lineTo(0.01, 0.5)
|
||
|
|
self.path.lineTo(0.01, 0.01)
|
||
|
|
self.path.lineTo(0.5, 0.01)
|
||
|
|
self.path.lineTo(0.5, -0.01)
|
||
|
|
self.path.lineTo(0.01, -0.01)
|
||
|
|
self.path.lineTo(0.01, -0.5)
|
||
|
|
self.path.lineTo(-0.01, -0.5)
|
||
|
|
self.path.lineTo(-0.01, -0.01)
|
||
|
|
self.path.closeSubpath()
|
||
|
|
#self.path.connectPath(self.path)
|
||
|
|
#elif symbol == 'x':
|
||
|
|
else:
|
||
|
|
raise Exception("Unknown spot symbol '%s'" % symbol)
|
||
|
|
#self.path.addEllipse(QtCore.QRectF(-0.5, -0.5, 1, 1))
|
||
|
|
|
||
|
|
if pxMode:
|
||
|
|
## pre-render an image of the spot and display this rather than redrawing every time.
|
||
|
|
if image is None:
|
||
|
|
self.pixmap = self.makeSpotImage(size, pen, brush, symbol)
|
||
|
|
else:
|
||
|
|
self.pixmap = image ## image is already provided (probably shared with other spots)
|
||
|
|
self.setFlags(self.flags() | self.ItemIgnoresTransformations | self.ItemHasNoContents)
|
||
|
|
self.pi = QtGui.QGraphicsPixmapItem(self.pixmap, self)
|
||
|
|
self.pi.setPos(-0.5*size, -0.5*size)
|
||
|
|
else:
|
||
|
|
self.scale(size, size)
|
||
|
|
|
||
|
|
|
||
|
|
def makeSpotImage(self, size, pen, brush, symbol=None):
|
||
|
|
self.spotImage = QtGui.QImage(size+2, size+2, QtGui.QImage.Format_ARGB32_Premultiplied)
|
||
|
|
self.spotImage.fill(0)
|
||
|
|
p = QtGui.QPainter(self.spotImage)
|
||
|
|
p.setRenderHint(p.Antialiasing)
|
||
|
|
p.translate(size*0.5+1, size*0.5+1)
|
||
|
|
p.scale(size, size)
|
||
|
|
self.paint(p, None, None)
|
||
|
|
p.end()
|
||
|
|
return QtGui.QPixmap(self.spotImage)
|
||
|
|
|
||
|
|
|
||
|
|
def setBrush(self, brush):
|
||
|
|
self.brush = fn.mkBrush(brush)
|
||
|
|
self.update()
|
||
|
|
|
||
|
|
def setPen(self, pen):
|
||
|
|
self.pen = fn.mkPen(pen)
|
||
|
|
self.update()
|
||
|
|
|
||
|
|
def boundingRect(self):
|
||
|
|
return self.path.boundingRect()
|
||
|
|
|
||
|
|
def shape(self):
|
||
|
|
return self.path
|
||
|
|
|
||
|
|
def paint(self, p, *opts):
|
||
|
|
p.setPen(self.pen)
|
||
|
|
p.setBrush(self.brush)
|
||
|
|
p.drawPath(self.path)
|
||
|
|
|