Move region selection to editors mod
Tyler Goodlet
parent
4a37cf768f
commit
569b2efb51
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@ -22,6 +22,10 @@ from dataclasses import dataclass, field
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from typing import Optional
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import pyqtgraph as pg
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from pyqtgraph import ViewBox, Point, QtCore, QtGui
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from pyqtgraph import functions as fn
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from PyQt5.QtCore import QPointF
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import numpy as np
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from ._style import hcolor, _font
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from ._graphics._lines import order_line, LevelLine
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@ -289,3 +293,166 @@ class LineEditor:
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line.delete()
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return line
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class SelectRect(QtGui.QGraphicsRectItem):
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def __init__(
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self,
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viewbox: ViewBox,
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color: str = 'dad_blue',
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) -> None:
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super().__init__(0, 0, 1, 1)
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# self.rbScaleBox = QtGui.QGraphicsRectItem(0, 0, 1, 1)
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self.vb = viewbox
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self._chart: 'ChartPlotWidget' = None # noqa
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# override selection box color
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color = QtGui.QColor(hcolor(color))
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self.setPen(fn.mkPen(color, width=1))
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color.setAlpha(66)
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self.setBrush(fn.mkBrush(color))
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self.setZValue(1e9)
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self.hide()
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self._label = None
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label = self._label = QtGui.QLabel()
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label.setTextFormat(0) # markdown
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label.setFont(_font.font)
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label.setMargin(0)
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label.setAlignment(
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QtCore.Qt.AlignLeft
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# | QtCore.Qt.AlignVCenter
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)
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# proxy is created after containing scene is initialized
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self._label_proxy = None
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self._abs_top_right = None
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# TODO: "swing %" might be handy here (data's max/min # % change)
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self._contents = [
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'change: {pchng:.2f} %',
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'range: {rng:.2f}',
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'bars: {nbars}',
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'max: {dmx}',
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'min: {dmn}',
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# 'time: {nbars}m', # TODO: compute this per bar size
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'sigma: {std:.2f}',
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]
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@property
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def chart(self) -> 'ChartPlotWidget': # noqa
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return self._chart
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@chart.setter
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def chart(self, chart: 'ChartPlotWidget') -> None: # noqa
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self._chart = chart
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chart.sigRangeChanged.connect(self.update_on_resize)
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palette = self._label.palette()
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# TODO: get bg color working
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palette.setColor(
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self._label.backgroundRole(),
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# QtGui.QColor(chart.backgroundBrush()),
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QtGui.QColor(hcolor('papas_special')),
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)
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def update_on_resize(self, vr, r):
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"""Re-position measure label on view range change.
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"""
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if self._abs_top_right:
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self._label_proxy.setPos(
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self.vb.mapFromView(self._abs_top_right)
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)
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def mouse_drag_released(
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self,
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p1: QPointF,
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p2: QPointF
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) -> None:
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"""Called on final button release for mouse drag with start and
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end positions.
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"""
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self.set_pos(p1, p2)
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def set_pos(
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self,
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p1: QPointF,
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p2: QPointF
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) -> None:
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"""Set position of selection rect and accompanying label, move
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label to match.
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"""
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if self._label_proxy is None:
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# https://doc.qt.io/qt-5/qgraphicsproxywidget.html
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self._label_proxy = self.vb.scene().addWidget(self._label)
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start_pos = self.vb.mapToView(p1)
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end_pos = self.vb.mapToView(p2)
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# map to view coords and update area
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r = QtCore.QRectF(start_pos, end_pos)
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# old way; don't need right?
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# lr = QtCore.QRectF(p1, p2)
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# r = self.vb.childGroup.mapRectFromParent(lr)
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self.setPos(r.topLeft())
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self.resetTransform()
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self.scale(r.width(), r.height())
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self.show()
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y1, y2 = start_pos.y(), end_pos.y()
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x1, x2 = start_pos.x(), end_pos.x()
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# TODO: heh, could probably use a max-min streamin algo here too
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_, xmn = min(y1, y2), min(x1, x2)
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ymx, xmx = max(y1, y2), max(x1, x2)
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pchng = (y2 - y1) / y1 * 100
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rng = abs(y1 - y2)
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ixmn, ixmx = round(xmn), round(xmx)
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nbars = ixmx - ixmn + 1
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data = self._chart._ohlc[ixmn:ixmx]
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if len(data):
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std = data['close'].std()
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dmx = data['high'].max()
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dmn = data['low'].min()
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else:
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dmn = dmx = std = np.nan
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# update label info
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self._label.setText('\n'.join(self._contents).format(
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pchng=pchng, rng=rng, nbars=nbars,
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std=std, dmx=dmx, dmn=dmn,
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))
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# print(f'x2, y2: {(x2, y2)}')
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# print(f'xmn, ymn: {(xmn, ymx)}')
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label_anchor = Point(xmx + 2, ymx)
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# XXX: in the drag bottom-right -> top-left case we don't
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# want the label to overlay the box.
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# if (x2, y2) == (xmn, ymx):
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# # could do this too but needs to be added after coords transform
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# # label_anchor = Point(x2, y2 + self._label.height())
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# label_anchor = Point(xmn, ymn)
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self._abs_top_right = label_anchor
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self._label_proxy.setPos(self.vb.mapFromView(label_anchor))
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# self._label.show()
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def clear(self):
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"""Clear the selection box from view.
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"""
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self._label.hide()
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self.hide()
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@ -22,183 +22,20 @@ from contextlib import asynccontextmanager
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from typing import Optional
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import pyqtgraph as pg
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from PyQt5.QtCore import QPointF, Qt
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from PyQt5.QtCore import QEvent
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from pyqtgraph import ViewBox, Point, QtCore, QtGui
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from PyQt5.QtCore import Qt, QEvent
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from pyqtgraph import ViewBox, Point, QtCore
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from pyqtgraph import functions as fn
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import numpy as np
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import trio
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from ..log import get_logger
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from ._style import _min_points_to_show, hcolor, _font
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from ._style import _min_points_to_show
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from ._editors import SelectRect
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log = get_logger(__name__)
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class SelectRect(QtGui.QGraphicsRectItem):
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def __init__(
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self,
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viewbox: ViewBox,
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color: str = 'dad_blue',
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) -> None:
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super().__init__(0, 0, 1, 1)
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# self.rbScaleBox = QtGui.QGraphicsRectItem(0, 0, 1, 1)
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self.vb = viewbox
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self._chart: 'ChartPlotWidget' = None # noqa
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# override selection box color
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color = QtGui.QColor(hcolor(color))
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self.setPen(fn.mkPen(color, width=1))
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color.setAlpha(66)
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self.setBrush(fn.mkBrush(color))
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self.setZValue(1e9)
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self.hide()
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self._label = None
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label = self._label = QtGui.QLabel()
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label.setTextFormat(0) # markdown
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label.setFont(_font.font)
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label.setMargin(0)
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label.setAlignment(
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QtCore.Qt.AlignLeft
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# | QtCore.Qt.AlignVCenter
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)
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# proxy is created after containing scene is initialized
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self._label_proxy = None
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self._abs_top_right = None
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# TODO: "swing %" might be handy here (data's max/min # % change)
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self._contents = [
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'change: {pchng:.2f} %',
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'range: {rng:.2f}',
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'bars: {nbars}',
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'max: {dmx}',
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'min: {dmn}',
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# 'time: {nbars}m', # TODO: compute this per bar size
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'sigma: {std:.2f}',
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]
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@property
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def chart(self) -> 'ChartPlotWidget': # noqa
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return self._chart
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@chart.setter
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def chart(self, chart: 'ChartPlotWidget') -> None: # noqa
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self._chart = chart
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chart.sigRangeChanged.connect(self.update_on_resize)
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palette = self._label.palette()
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# TODO: get bg color working
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palette.setColor(
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self._label.backgroundRole(),
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# QtGui.QColor(chart.backgroundBrush()),
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QtGui.QColor(hcolor('papas_special')),
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)
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def update_on_resize(self, vr, r):
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"""Re-position measure label on view range change.
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"""
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if self._abs_top_right:
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self._label_proxy.setPos(
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self.vb.mapFromView(self._abs_top_right)
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)
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def mouse_drag_released(
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self,
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p1: QPointF,
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p2: QPointF
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) -> None:
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"""Called on final button release for mouse drag with start and
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end positions.
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"""
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self.set_pos(p1, p2)
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def set_pos(
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self,
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p1: QPointF,
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p2: QPointF
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) -> None:
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"""Set position of selection rect and accompanying label, move
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label to match.
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"""
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if self._label_proxy is None:
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# https://doc.qt.io/qt-5/qgraphicsproxywidget.html
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self._label_proxy = self.vb.scene().addWidget(self._label)
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start_pos = self.vb.mapToView(p1)
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end_pos = self.vb.mapToView(p2)
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# map to view coords and update area
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r = QtCore.QRectF(start_pos, end_pos)
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# old way; don't need right?
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# lr = QtCore.QRectF(p1, p2)
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# r = self.vb.childGroup.mapRectFromParent(lr)
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self.setPos(r.topLeft())
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self.resetTransform()
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self.scale(r.width(), r.height())
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self.show()
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y1, y2 = start_pos.y(), end_pos.y()
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x1, x2 = start_pos.x(), end_pos.x()
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# TODO: heh, could probably use a max-min streamin algo here too
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_, xmn = min(y1, y2), min(x1, x2)
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ymx, xmx = max(y1, y2), max(x1, x2)
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pchng = (y2 - y1) / y1 * 100
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rng = abs(y1 - y2)
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ixmn, ixmx = round(xmn), round(xmx)
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nbars = ixmx - ixmn + 1
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data = self._chart._ohlc[ixmn:ixmx]
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if len(data):
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std = data['close'].std()
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dmx = data['high'].max()
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dmn = data['low'].min()
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else:
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dmn = dmx = std = np.nan
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# update label info
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self._label.setText('\n'.join(self._contents).format(
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pchng=pchng, rng=rng, nbars=nbars,
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std=std, dmx=dmx, dmn=dmn,
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))
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# print(f'x2, y2: {(x2, y2)}')
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# print(f'xmn, ymn: {(xmn, ymx)}')
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label_anchor = Point(xmx + 2, ymx)
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# XXX: in the drag bottom-right -> top-left case we don't
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# want the label to overlay the box.
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# if (x2, y2) == (xmn, ymx):
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# # could do this too but needs to be added after coords transform
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# # label_anchor = Point(x2, y2 + self._label.height())
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# label_anchor = Point(xmn, ymn)
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self._abs_top_right = label_anchor
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self._label_proxy.setPos(self.vb.mapFromView(label_anchor))
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# self._label.show()
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def clear(self):
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"""Clear the selection box from view.
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"""
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self._label.hide()
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self.hide()
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async def handle_viewmode_inputs(
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view: 'ChartView',
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