def __init__(self, image: np.ndarray, channel: Channel, **kargs):
"""
See :func:`setImage <pyqtgraph.ImageItem.setImage>` for all allowed initialization arguments.
"""
GraphicsObject.__init__(self)
self.channel = channel
self.setPxMode(False)
self.setAutoDownsample(False)
self.menu = None
self.image = None ## original image data
self.qimage = None ## rendered image for display
self.paintMode = None
self.levels = channel.settings.levels
self.lut = None
self.autoDownsample = False
self.axisOrder = getConfigOption('imageAxisOrder')
# In some cases, we use a modified lookup table to handle both rescaling
# and LUT more efficiently
self._effectiveLut = None
self.drawKernel = None
self.border = None
self.removable = False
if image is not None:
self.setImage(image, **kargs)
else:
self.setOpts(**kargs)
def __init__(self,
size,
width=5,
brush=None,
pen=None,
suffix='m',
offset=None):
GraphicsObject.__init__(self)
GraphicsWidgetAnchor.__init__(self)
self.setFlag(self.ItemHasNoContents)
self.setAcceptedMouseButtons(QtCore.Qt.NoButton)
if brush is None:
brush = getConfigOption('foreground')
self.brush = fn.mkBrush(brush)
self.pen = fn.mkPen(pen)
self._width = width
self.size = size
if offset == None:
offset = (0, 0)
self.offset = offset
self.bar = QtGui.QGraphicsRectItem()
self.bar.setPen(self.pen)
self.bar.setBrush(self.brush)
self.bar.setParentItem(self)
self.text = TextItem(text=fn.siFormat(size, suffix=suffix),
anchor=(0.5, 1),
angle=90,
color=(0, 0, 0))
self.text.setParentItem(self)
def setPos(self, pos):
if pos != self.pos:
self.pos = pos
# self.informViewBoundsChanged()
# self.sigPlotChanged.emit(self)
# self._boundingRect = None
GraphicsObject.setPos(self, Point([self.pos, 0]))
def setPos(self, pos):
if pos != self.pos:
self.pos = pos
# self.informViewBoundsChanged()
# self.sigPlotChanged.emit(self)
# self._boundingRect = None
GraphicsObject.setPos(self, Point([self.pos, 0]))
self.sigPositionChanged.emit(self)
def __init__(self, antialias=True):
GraphicsObject.__init__(self)
self.data = []
self.x0, self.x1, self.y0, self.y1 = inf, -inf, inf, -inf
self.picture = None
self._boundingRect = None
self._numcalls = 0
self._t1 = 0
self._t0 = 0
self._mousex = 0
self._mousey = 0
self._antialias = antialias
def __init__(self, antialias=True):
GraphicsObject.__init__(self)
self.data = []
self.x0, self.x1, self.y0, self.y1 = inf, -inf, inf, -inf
self.picture = None
self._boundingRect = None
self._numcalls = 0
self._t1 = 0
self._t0 = 0
self._mousex = 0
self._mousey = 0
self._antialias = antialias
def __init__(self):
GraphicsObject.__init__(self)
# Set menu, create when necessary
self.menu = None
# Set size
self._rect = QtCore.QRectF(0, 0, 0, 0)
self._boundingRect = QtCore.QRectF(0, 0, 0, 0)
# Set Formatting
self.pen = mkPen((255, 255, 100), width=1)
self.brush = mkBrush(255, 255, 0, 100)
self.setZValue(1e9)
def setParentItem(self, p):
ret = GraphicsObject.setParentItem(self, p)
if self.offset is not None:
offset = Point(self.offset)
anchorx = 1 if offset[0] <= 0 else 0
anchory = 1 if offset[1] <= 0 else 0
anchor = (anchorx, anchory)
self.anchor(itemPos=anchor, parentPos=anchor, offset=offset)
return ret
def __init__(self, x = 1, y = 1, parent = None, barWidth = 3,
brush = None, offset = None):
'''
Initialze the geometry parameters for the bars.
Paramters
---------
x: float, optional
Horizontal bar length. Default is 1 unit on x axis.
y: float, optional
Vertical bar length. Default is 1 unit on y axis.
parent: pyqtgraph.plotItem, optional
QGraphicsWidget containing these scale bars.
barWidth: float, optional
Width of the scale bars. Default is 3 pixels.
brush: QBrush, optional
Brush for the bars.
offset: float, optional
Specifies the offset position relative to the bars' parent.
Positive values offset from the left or top; negative values
offset from the right or bottom. Default is None, will be
put somewhere in the corner, could be moved by mouse dragging.
'''
GraphicsObject.__init__(self)
GraphicsWidgetAnchor.__init__(self)
self.setFlag(self.ItemHasNoContents)
self.offset = offset
# if offset == None:
self.setFlag(self.ItemIgnoresTransformations)
self.xs, self.ys = x, y
self.xlen = 0
self.ylen = 0
self.xbar = QtGui.QGraphicsRectItem(self)
self.ybar = QtGui.QGraphicsRectItem(self)
if brush is None:
brush = pg.getConfigOption("foreground")
self.xbar.setBrush(brush)
self.ybar.setBrush(brush)
self.barWidth = barWidth
self.setParentItem(parent)
def viewTransformChanged(self):
GraphicsObject.viewTransformChanged(self)
self._shape = None ## invalidate shape, recompute later if requested.
self.update()