Use dashed lines for crosshair
parent
7a245ddda4
commit
fca6257152
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@ -10,7 +10,7 @@ from PyQt5 import QtCore, QtGui
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from PyQt5.QtCore import QLineF
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from .quantdom.utils import timeit
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from ._style import _xaxis_at # , _tina_mode
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from ._style import _xaxis_at, hcolor
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from ._axes import YAxisLabel, XAxisLabel
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@ -18,17 +18,21 @@ from ._axes import YAxisLabel, XAxisLabel
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# - checkout pyqtgraph.PlotCurveItem.setCompositionMode
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_mouse_rate_limit = 30
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_debounce_delay = 10
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class CrossHair(pg.GraphicsObject):
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def __init__(
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self,
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linkedsplitcharts: 'LinkedSplitCharts',
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linkedsplitcharts: 'LinkedSplitCharts', # noqa
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digits: int = 0
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) -> None:
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super().__init__()
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self.pen = pg.mkPen('#a9a9a9') # gray?
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self.pen = pg.mkPen(
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color='#a9a9a9', # gray?
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style=QtCore.Qt.DashLine,
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)
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self.lsc = linkedsplitcharts
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self.graphics = {}
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self.plots = []
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@ -47,7 +51,7 @@ class CrossHair(pg.GraphicsObject):
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yl = YAxisLabel(
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parent=plot.getAxis('right'),
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digits=digits or self.digits,
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opacity=1
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opacity=0.7,
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)
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# TODO: checkout what ``.sigDelayed`` can be used for
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@ -55,17 +59,20 @@ class CrossHair(pg.GraphicsObject):
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px_moved = pg.SignalProxy(
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plot.scene().sigMouseMoved,
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rateLimit=_mouse_rate_limit,
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slot=self.mouseMoved
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slot=self.mouseMoved,
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delay=_debounce_delay,
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)
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px_enter = pg.SignalProxy(
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plot.sig_mouse_enter,
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rateLimit=_mouse_rate_limit,
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slot=lambda: self.mouseAction('Enter', plot),
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delay=_debounce_delay,
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)
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px_leave = pg.SignalProxy(
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plot.sig_mouse_leave,
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rateLimit=_mouse_rate_limit,
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slot=lambda: self.mouseAction('Leave', plot),
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delay=_debounce_delay,
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)
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self.graphics[plot] = {
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'vl': vl,
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@ -80,13 +87,16 @@ class CrossHair(pg.GraphicsObject):
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# place below the last plot
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self.xaxis_label = XAxisLabel(
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parent=self.plots[-1].getAxis('bottom'),
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opacity=1
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opacity=0.7
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)
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else:
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# keep x-axis right below main chart
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first = self.plots[0]
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xaxis = first.getAxis('bottom')
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self.xaxis_label = XAxisLabel(parent=xaxis, opacity=1)
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self.xaxis_label = XAxisLabel(
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parent=xaxis,
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opacity=0.7,
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)
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def mouseAction(self, action, plot): # noqa
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if action == 'Enter':
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@ -100,7 +110,10 @@ class CrossHair(pg.GraphicsObject):
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self.graphics[plot]['yl'].hide()
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self.active_plot = None
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def mouseMoved(self, evt): # noqa
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def mouseMoved(
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self,
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evt: 'Tuple[QMouseEvent]', # noqa
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) -> None: # noqa
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"""Update horizonal and vertical lines when mouse moves inside
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either the main chart or any indicator subplot.
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"""
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@ -108,6 +121,7 @@ class CrossHair(pg.GraphicsObject):
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# find position inside active plot
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try:
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# map to view coordinate system
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mouse_point = self.active_plot.mapToView(pos)
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except AttributeError:
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# mouse was not on active plot
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@ -120,7 +134,7 @@ class CrossHair(pg.GraphicsObject):
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self.graphics[plot]['hl'].setY(y)
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self.graphics[self.active_plot]['yl'].update_label(
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evt_post=pos, point_view=mouse_point
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abs_pos=pos, data=y
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)
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for plot, opts in self.graphics.items():
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# move the vertical line to the current x
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@ -131,8 +145,8 @@ class CrossHair(pg.GraphicsObject):
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# update the label on the bottom of the crosshair
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self.xaxis_label.update_label(
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evt_post=pos,
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point_view=mouse_point
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abs_pos=pos,
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data=x
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)
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def boundingRect(self):
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@ -226,7 +240,7 @@ class BarItems(pg.GraphicsObject):
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# 0.5 is no overlap between arms, 1.0 is full overlap
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w: float = 0.43
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bull_pen = pg.mkPen('#808080')
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bull_pen = pg.mkPen(hcolor('gray'))
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# XXX: tina mode, see below
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# bull_brush = pg.mkPen('#00cc00')
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@ -244,6 +258,9 @@ class BarItems(pg.GraphicsObject):
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# track the current length of drawable lines within the larger array
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self.index: int = 0
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def last_value(self) -> QLineF:
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return self.lines[self.index - 1]['rarm']
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@timeit
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def draw_from_data(
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self,
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