Merge pull request #200 from pikers/asyncify_input_modes

Asyncify input modes

piker/clearing/_client.py

@@ -125,7 +125,9 @@ def get_orders(
     if _orders is None:
         # setup local ui event streaming channels for request/resp
         # streamging with EMS daemon
-        _orders = OrderBook(*trio.open_memory_channel(1))
+        _orders = OrderBook(
+            *trio.open_memory_channel(100),
+        )
 
     return _orders
 

piker/ui/_annotate.py

@@ -18,7 +18,6 @@
 Annotations for ur faces.
 
 """
-
 from PyQt5 import QtCore, QtGui
 from PyQt5.QtGui import QGraphicsPathItem
 from pyqtgraph import Point, functions as fn, Color

piker/ui/_axes.py

@@ -38,7 +38,7 @@ class Axis(pg.AxisItem):
     """
     def __init__(
         self,
-        linked_charts,
+        linkedsplits,
         typical_max_str: str = '100 000.000',
         min_tick: int = 2,
         **kwargs
@@ -49,7 +49,7 @@ class Axis(pg.AxisItem):
         # XXX: pretty sure this makes things slower
         # self.setCacheMode(QtGui.QGraphicsItem.DeviceCoordinateCache)
 
-        self.linked_charts = linked_charts
+        self.linkedsplits = linkedsplits
         self._min_tick = min_tick
         self._dpi_font = _font
 
@@ -132,9 +132,9 @@ class DynamicDateAxis(Axis):
     ) -> List[str]:
 
         # try:
-        chart = self.linked_charts.chart
+        chart = self.linkedsplits.chart
-        bars = chart._ohlc
+        bars = chart._arrays['ohlc']
-        shm = self.linked_charts.chart._shm
+        shm = self.linkedsplits.chart._shm
         first = shm._first.value
 
         bars_len = len(bars)
@@ -232,7 +232,6 @@ class AxisLabel(pg.GraphicsObject):
             p.setPen(self.fg_color)
             p.drawText(self.rect, self.text_flags, self.label_str)
 
-
     def draw(
         self,
         p: QtGui.QPainter,
@@ -250,9 +249,9 @@ class AxisLabel(pg.GraphicsObject):
         # reason; ok by us
         p.setOpacity(self.opacity)
 
-        # this cause the L1 labels to glitch out if used 
+        # this cause the L1 labels to glitch out if used in the subtype
-        # in the subtype and it will leave a small black strip
+        # and it will leave a small black strip with the arrow path if
-        # with the arrow path if done before the above
+        # done before the above
         p.fillRect(self.rect, self.bg_color)
 
 

piker/ui/_editors.py

@@ -0,0 +1,451 @@
+# piker: trading gear for hackers
+# Copyright (C) Tyler Goodlet (in stewardship for piker0)
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+"""
+Higher level annotation editors.
+
+"""
+from dataclasses import dataclass, field
+from typing import Optional
+
+import pyqtgraph as pg
+from pyqtgraph import ViewBox, Point, QtCore, QtGui
+from pyqtgraph import functions as fn
+from PyQt5.QtCore import QPointF
+import numpy as np
+
+from ._style import hcolor, _font
+from ._graphics._lines import order_line, LevelLine
+from ..log import get_logger
+
+
+log = get_logger(__name__)
+
+
+@dataclass
+class ArrowEditor:
+
+    chart: 'ChartPlotWidget'  # noqa
+    _arrows: field(default_factory=dict)
+
+    def add(
+        self,
+        uid: str,
+        x: float,
+        y: float,
+        color='default',
+        pointing: Optional[str] = None,
+    ) -> pg.ArrowItem:
+        """Add an arrow graphic to view at given (x, y).
+
+        """
+        angle = {
+            'up': 90,
+            'down': -90,
+            None: 180,  # pointing to right (as in an alert)
+        }[pointing]
+
+        # scale arrow sizing to dpi-aware font
+        size = _font.font.pixelSize() * 0.8
+
+        arrow = pg.ArrowItem(
+            angle=angle,
+            baseAngle=0,
+            headLen=size,
+            headWidth=size/2,
+            tailLen=None,
+            pxMode=True,
+
+            # coloring
+            pen=pg.mkPen(hcolor('papas_special')),
+            brush=pg.mkBrush(hcolor(color)),
+        )
+        arrow.setPos(x, y)
+
+        self._arrows[uid] = arrow
+
+        # render to view
+        self.chart.plotItem.addItem(arrow)
+
+        return arrow
+
+    def remove(self, arrow) -> bool:
+        self.chart.plotItem.removeItem(arrow)
+
+
+@dataclass
+class LineEditor:
+    '''The great editor of linez.
+
+    '''
+    chart: 'ChartPlotWidget' = None  # type: ignore # noqa
+    _order_lines: dict[str, LevelLine] = field(default_factory=dict)
+    _active_staged_line: LevelLine = None
+
+    def stage_line(
+        self,
+        action: str,
+
+        color: str = 'alert_yellow',
+        hl_on_hover: bool = False,
+        dotted: bool = False,
+
+        # fields settings
+        size: Optional[int] = None,
+    ) -> LevelLine:
+        """Stage a line at the current chart's cursor position
+        and return it.
+
+        """
+        # chart.setCursor(QtCore.Qt.PointingHandCursor)
+        cursor = self.chart.linked.cursor
+        if not cursor:
+            return None
+
+        chart = cursor.active_plot
+        y = cursor._datum_xy[1]
+
+        symbol = chart._lc.symbol
+
+        # add a "staged" cursor-tracking line to view
+        # and cash it in a a var
+        if self._active_staged_line:
+            self.unstage_line()
+
+        line = order_line(
+            chart,
+
+            level=y,
+            level_digits=symbol.digits(),
+            size=size,
+            size_digits=symbol.lot_digits(),
+
+            # just for the stage line to avoid
+            # flickering while moving the cursor
+            # around where it might trigger highlight
+            # then non-highlight depending on sensitivity
+            always_show_labels=True,
+
+            # kwargs
+            color=color,
+            # don't highlight the "staging" line
+            hl_on_hover=hl_on_hover,
+            dotted=dotted,
+            exec_type='dark' if dotted else 'live',
+            action=action,
+            show_markers=True,
+
+            # prevent flickering of marker while moving/tracking cursor
+            only_show_markers_on_hover=False,
+        )
+
+        self._active_staged_line = line
+
+        # hide crosshair y-line and label
+        cursor.hide_xhair()
+
+        # add line to cursor trackers
+        cursor._trackers.add(line)
+
+        return line
+
+    def unstage_line(self) -> LevelLine:
+        """Inverse of ``.stage_line()``.
+
+        """
+        # chart = self.chart._cursor.active_plot
+        # # chart.setCursor(QtCore.Qt.ArrowCursor)
+        cursor = self.chart.linked.cursor
+
+        # delete "staged" cursor tracking line from view
+        line = self._active_staged_line
+        if line:
+            cursor._trackers.remove(line)
+            line.delete()
+
+        self._active_staged_line = None
+
+        # show the crosshair y line and label
+        cursor.show_xhair()
+
+    def create_order_line(
+        self,
+        uuid: str,
+        level: float,
+        chart: 'ChartPlotWidget',  # noqa
+        size: float,
+        action: str,
+    ) -> LevelLine:
+
+        line = self._active_staged_line
+        if not line:
+            raise RuntimeError("No line is currently staged!?")
+
+        sym = chart._lc.symbol
+
+        line = order_line(
+            chart,
+
+            # label fields default values
+            level=level,
+            level_digits=sym.digits(),
+
+            size=size,
+            size_digits=sym.lot_digits(),
+
+            # LevelLine kwargs
+            color=line.color,
+            dotted=line._dotted,
+
+            show_markers=True,
+            only_show_markers_on_hover=True,
+
+            action=action,
+        )
+
+        # for now, until submission reponse arrives
+        line.hide_labels()
+
+        # register for later lookup/deletion
+        self._order_lines[uuid] = line
+
+        return line
+
+    def commit_line(self, uuid: str) -> LevelLine:
+        """Commit a "staged line" to view.
+
+        Submits the line graphic under the cursor as a (new) permanent
+        graphic in view.
+
+        """
+        try:
+            line = self._order_lines[uuid]
+        except KeyError:
+            log.warning(f'No line for {uuid} could be found?')
+            return
+        else:
+            assert line.oid == uuid
+            line.show_labels()
+
+            # TODO: other flashy things to indicate the order is active
+
+            log.debug(f'Level active for level: {line.value()}')
+
+            return line
+
+    def lines_under_cursor(self) -> list[LevelLine]:
+        """Get the line(s) under the cursor position.
+
+        """
+        # Delete any hoverable under the cursor
+        return self.chart.linked.cursor._hovered
+
+    def all_lines(self) -> tuple[LevelLine]:
+        return tuple(self._order_lines.values())
+
+    def remove_line(
+        self,
+        line: LevelLine = None,
+        uuid: str = None,
+    ) -> LevelLine:
+        """Remove a line by refernce or uuid.
+
+        If no lines or ids are provided remove all lines under the
+        cursor position.
+
+        """
+        if line:
+            uuid = line.oid
+
+        # try to look up line from our registry
+        line = self._order_lines.pop(uuid, None)
+        if line:
+
+            # if hovered remove from cursor set
+            cursor = self.chart.linked.cursor
+            hovered = cursor._hovered
+            if line in hovered:
+                hovered.remove(line)
+
+                # make sure the xhair doesn't get left off
+                # just because we never got a un-hover event
+                cursor.show_xhair()
+
+            line.delete()
+            return line
+
+
+class SelectRect(QtGui.QGraphicsRectItem):
+
+    def __init__(
+        self,
+        viewbox: ViewBox,
+        color: str = 'dad_blue',
+    ) -> None:
+        super().__init__(0, 0, 1, 1)
+
+        # self.rbScaleBox = QtGui.QGraphicsRectItem(0, 0, 1, 1)
+        self.vb = viewbox
+        self._chart: 'ChartPlotWidget' = None  # noqa
+
+        # override selection box color
+        color = QtGui.QColor(hcolor(color))
+        self.setPen(fn.mkPen(color, width=1))
+        color.setAlpha(66)
+        self.setBrush(fn.mkBrush(color))
+        self.setZValue(1e9)
+        self.hide()
+        self._label = None
+
+        label = self._label = QtGui.QLabel()
+        label.setTextFormat(0)  # markdown
+        label.setFont(_font.font)
+        label.setMargin(0)
+        label.setAlignment(
+            QtCore.Qt.AlignLeft
+            # | QtCore.Qt.AlignVCenter
+        )
+
+        # proxy is created after containing scene is initialized
+        self._label_proxy = None
+        self._abs_top_right = None
+
+        # TODO: "swing %" might be handy here (data's max/min # % change)
+        self._contents = [
+            'change: {pchng:.2f} %',
+            'range: {rng:.2f}',
+            'bars: {nbars}',
+            'max: {dmx}',
+            'min: {dmn}',
+            # 'time: {nbars}m',  # TODO: compute this per bar size
+            'sigma: {std:.2f}',
+        ]
+
+    @property
+    def chart(self) -> 'ChartPlotWidget':  # noqa
+        return self._chart
+
+    @chart.setter
+    def chart(self, chart: 'ChartPlotWidget') -> None:  # noqa
+        self._chart = chart
+        chart.sigRangeChanged.connect(self.update_on_resize)
+        palette = self._label.palette()
+
+        # TODO: get bg color working
+        palette.setColor(
+            self._label.backgroundRole(),
+            # QtGui.QColor(chart.backgroundBrush()),
+            QtGui.QColor(hcolor('papas_special')),
+        )
+
+    def update_on_resize(self, vr, r):
+        """Re-position measure label on view range change.
+
+        """
+        if self._abs_top_right:
+            self._label_proxy.setPos(
+                self.vb.mapFromView(self._abs_top_right)
+            )
+
+    def mouse_drag_released(
+        self,
+        p1: QPointF,
+        p2: QPointF
+    ) -> None:
+        """Called on final button release for mouse drag with start and
+        end positions.
+
+        """
+        self.set_pos(p1, p2)
+
+    def set_pos(
+        self,
+        p1: QPointF,
+        p2: QPointF
+    ) -> None:
+        """Set position of selection rect and accompanying label, move
+        label to match.
+
+        """
+        if self._label_proxy is None:
+            # https://doc.qt.io/qt-5/qgraphicsproxywidget.html
+            self._label_proxy = self.vb.scene().addWidget(self._label)
+
+        start_pos = self.vb.mapToView(p1)
+        end_pos = self.vb.mapToView(p2)
+
+        # map to view coords and update area
+        r = QtCore.QRectF(start_pos, end_pos)
+
+        # old way; don't need right?
+        # lr = QtCore.QRectF(p1, p2)
+        # r = self.vb.childGroup.mapRectFromParent(lr)
+
+        self.setPos(r.topLeft())
+        self.resetTransform()
+        self.scale(r.width(), r.height())
+        self.show()
+
+        y1, y2 = start_pos.y(), end_pos.y()
+        x1, x2 = start_pos.x(), end_pos.x()
+
+        # TODO: heh, could probably use a max-min streamin algo here too
+        _, xmn = min(y1, y2), min(x1, x2)
+        ymx, xmx = max(y1, y2), max(x1, x2)
+
+        pchng = (y2 - y1) / y1 * 100
+        rng = abs(y1 - y2)
+
+        ixmn, ixmx = round(xmn), round(xmx)
+        nbars = ixmx - ixmn + 1
+
+        data = self._chart._arrays['ohlc'][ixmn:ixmx]
+
+        if len(data):
+            std = data['close'].std()
+            dmx = data['high'].max()
+            dmn = data['low'].min()
+        else:
+            dmn = dmx = std = np.nan
+
+        # update label info
+        self._label.setText('\n'.join(self._contents).format(
+            pchng=pchng, rng=rng, nbars=nbars,
+            std=std, dmx=dmx, dmn=dmn,
+        ))
+
+        # print(f'x2, y2: {(x2, y2)}')
+        # print(f'xmn, ymn: {(xmn, ymx)}')
+
+        label_anchor = Point(xmx + 2, ymx)
+
+        # XXX: in the drag bottom-right -> top-left case we don't
+        # want the label to overlay the box.
+        # if (x2, y2) == (xmn, ymx):
+        #     # could do this too but needs to be added after coords transform
+        #     # label_anchor = Point(x2, y2 + self._label.height())
+        #     label_anchor = Point(xmn, ymn)
+
+        self._abs_top_right = label_anchor
+        self._label_proxy.setPos(self.vb.mapFromView(label_anchor))
+        # self._label.show()
+
+    def clear(self):
+        """Clear the selection box from view.
+
+        """
+        self._label.hide()
+        self.hide()

piker/ui/_event.py

@@ -19,27 +19,41 @@ Qt event proxying and processing using ``trio`` mem chans.
 
 """
 from contextlib import asynccontextmanager
+from typing import Callable
 
-from PyQt5 import QtCore, QtGui
+from PyQt5 import QtCore
 from PyQt5.QtCore import QEvent
+from PyQt5.QtGui import QWidget
 import trio
 
 
-class EventCloner(QtCore.QObject):
+class EventRelay(QtCore.QObject):
-    """Clone and forward keyboard events over a trio memory channel
+    '''
-    for later async processing.
+    Relay Qt events over a trio memory channel for async processing.
 
-    """
+    '''
     _event_types: set[QEvent] = set()
     _send_chan: trio.abc.SendChannel = None
+    _filter_auto_repeats: bool = True
 
     def eventFilter(
         self,
-        source: QtGui.QWidget,
+        source: QWidget,
         ev: QEvent,
     ) -> None:
+        '''
+        Qt global event filter: return `False` to pass through and `True`
+        to filter event out.
 
-        if ev.type() in self._event_types:
+        https://doc.qt.io/qt-5/qobject.html#eventFilter
+        https://doc.qt.io/qtforpython/overviews/eventsandfilters.html#event-filters
+
+        '''
+        etype = ev.type()
+        # print(f'etype: {etype}')
+
+        if etype in self._event_types:
+            # ev.accept()
 
             # TODO: what's the right way to allow this?
             # if ev.isAutoRepeat():
@@ -51,41 +65,77 @@ class EventCloner(QtCore.QObject):
             # something to do with Qt internals and calling the
             # parent handler?
 
+            if etype in {QEvent.KeyPress, QEvent.KeyRelease}:
+
+                # TODO: is there a global setting for this?
+                if ev.isAutoRepeat() and self._filter_auto_repeats:
+                    ev.ignore()
+                    return True
+
                 key = ev.key()
                 mods = ev.modifiers()
                 txt = ev.text()
 
-            # run async processing
+                # NOTE: the event object instance coming out
-            self._send_chan.send_nowait((ev, key, mods, txt))
+                # the other side is mutated since Qt resumes event
+                # processing **before** running a ``trio`` guest mode
+                # tick, thus special handling or copying must be done.
 
-        # never intercept the event
+                # send elements to async handler
+                self._send_chan.send_nowait((ev, etype, key, mods, txt))
+
+            else:
+                # send event to async handler
+                self._send_chan.send_nowait(ev)
+
+            # **do not** filter out this event
+            # and instead forward to the source widget
+            return False
+
+        # filter out this event
+        # https://doc.qt.io/qt-5/qobject.html#installEventFilter
         return False
 
 
 @asynccontextmanager
-async def open_key_stream(
+async def open_event_stream(
 
-    source_widget: QtGui.QWidget,
+    source_widget: QWidget,
     event_types: set[QEvent] = {QEvent.KeyPress},
-
+    filter_auto_repeats: bool = True,
-    # TODO: should we offer some kinda option for toggling releases?
-    # would it require a channel per event type?
-    # QEvent.KeyRelease,
 
 ) -> trio.abc.ReceiveChannel:
 
     # 1 to force eager sending
     send, recv = trio.open_memory_channel(16)
 
-    kc = EventCloner()
+    kc = EventRelay()
     kc._send_chan = send
     kc._event_types = event_types
+    kc._filter_auto_repeats = filter_auto_repeats
 
     source_widget.installEventFilter(kc)
 
     try:
+        async with send:
             yield recv
-
     finally:
-        await send.aclose()
         source_widget.removeEventFilter(kc)
+
+
+@asynccontextmanager
+async def open_handler(
+
+    source_widget: QWidget,
+    event_types: set[QEvent],
+    async_handler: Callable[[QWidget, trio.abc.ReceiveChannel], None],
+    **kwargs,
+
+) -> None:
+
+    async with (
+        trio.open_nursery() as n,
+        open_event_stream(source_widget, event_types, **kwargs) as event_recv_stream,
+    ):
+        n.start_soon(async_handler, source_widget, event_recv_stream)
+        yield

piker/ui/_graphics/_cursor.py

@@ -18,8 +18,8 @@
 Mouse interaction graphics
 
 """
-import math
+from functools import partial
-from typing import Optional, Tuple, Set, Dict
+from typing import Optional, Callable
 
 import inspect
 import numpy as np
@@ -30,7 +30,6 @@ from PyQt5.QtCore import QPointF, QRectF
 from .._style import (
     _xaxis_at,
     hcolor,
-    _font,
     _font_small,
 )
 from .._axes import YAxisLabel, XAxisLabel
@@ -98,7 +97,7 @@ class LineDot(pg.CurvePoint):
 
         (x, y) = self.curve().getData()
         index = self.property('index')
-        # first = self._plot._ohlc[0]['index']
+        # first = self._plot._arrays['ohlc'][0]['index']
         # first = x[0]
         # i = index - first
         i = index - x[0]
@@ -133,11 +132,15 @@ class ContentsLabel(pg.LabelItem):
     }
 
     def __init__(
+
         self,
-        chart: 'ChartPlotWidget',  # noqa
+        # chart: 'ChartPlotWidget',  # noqa
+        view: pg.ViewBox,
+
         anchor_at: str = ('top', 'right'),
         justify_text: str = 'left',
         font_size: Optional[int] = None,
+
     ) -> None:
 
         font_size = font_size or _font_small.px_size
@@ -148,9 +151,10 @@ class ContentsLabel(pg.LabelItem):
         )
 
         # anchor to viewbox
-        self.setParentItem(chart._vb)
+        self.setParentItem(view)
-        chart.scene().addItem(self)
+
-        self.chart = chart
+        self.vb = view
+        view.scene().addItem(self)
 
         v, h = anchor_at
         index = (self._corner_anchors[h], self._corner_anchors[v])
@@ -163,10 +167,12 @@ class ContentsLabel(pg.LabelItem):
         self.anchor(itemPos=index, parentPos=index, offset=margins)
 
     def update_from_ohlc(
+
         self,
         name: str,
         index: int,
         array: np.ndarray,
+
     ) -> None:
         # this being "html" is the dumbest shit :eyeroll:
         first = array[0]['index']
@@ -188,25 +194,111 @@ class ContentsLabel(pg.LabelItem):
         )
 
     def update_from_value(
+
         self,
         name: str,
         index: int,
         array: np.ndarray,
+
     ) -> None:
+
         first = array[0]['index']
         if index < array[-1]['index'] and index > first:
             data = array[index - first][name]
             self.setText(f"{name}: {data:.2f}")
 
 
+class ContentsLabels:
+    '''Collection of labels that span a ``LinkedSplits`` set of chart plots
+    and can be updated from the underlying data from an x-index value sent
+    as input from a cursor or other query mechanism.
+
+    '''
+    def __init__(
+        self,
+        linkedsplits: 'LinkedSplits',  # type: ignore # noqa
+
+    ) -> None:
+
+        self.linkedsplits = linkedsplits
+        self._labels: list[(
+            'CharPlotWidget',  # type: ignore # noqa
+            str,
+            ContentsLabel,
+            Callable
+        )] = []
+
+    def update_labels(
+        self,
+        index: int,
+        # array_name: str,
+
+    ) -> None:
+        # for name, (label, update) in self._labels.items():
+        for chart, name, label, update in self._labels:
+
+            if not (index >= 0 and index < chart._arrays['ohlc'][-1]['index']):
+                # out of range
+                continue
+
+            array = chart._arrays[name]
+
+            # call provided update func with data point
+            try:
+                label.show()
+                update(index, array)
+
+            except IndexError:
+                log.exception(f"Failed to update label: {name}")
+
+    def hide(self) -> None:
+        for chart, name, label, update in self._labels:
+            label.hide()
+
+    def add_label(
+
+        self,
+        chart: 'ChartPlotWidget',  # type: ignore # noqa
+        name: str,
+        anchor_at: tuple[str, str] = ('top', 'left'),
+        update_func: Callable = ContentsLabel.update_from_value,
+
+    ) -> ContentsLabel:
+
+        label = ContentsLabel(
+            view=chart._vb,
+            anchor_at=anchor_at,
+        )
+        self._labels.append(
+            (chart, name, label, partial(update_func, label, name))
+        )
+        # label.hide()
+
+        return label
+
+
 class Cursor(pg.GraphicsObject):
 
     def __init__(
+
         self,
-        linkedsplitcharts: 'LinkedSplitCharts',  # noqa
+        linkedsplits: 'LinkedSplits',  # noqa
         digits: int = 0
+
     ) -> None:
+
         super().__init__()
+
+        self.linked = linkedsplits
+        self.graphics: dict[str, pg.GraphicsObject] = {}
+        self.plots: List['PlotChartWidget'] = []  # type: ignore # noqa
+        self.active_plot = None
+        self.digits: int = digits
+        self._datum_xy: tuple[int, float] = (0, 0)
+
+        self._hovered: set[pg.GraphicsObject] = set()
+        self._trackers: set[pg.GraphicsObject] = set()
+
         # XXX: not sure why these are instance variables?
         # It's not like we can change them on the fly..?
         self.pen = pg.mkPen(
@@ -217,19 +309,10 @@ class Cursor(pg.GraphicsObject):
             color=hcolor('davies'),
             style=QtCore.Qt.DashLine,
         )
-        self.lsc = linkedsplitcharts
-        self.graphics: Dict[str, pg.GraphicsObject] = {}
-        self.plots: List['PlotChartWidget'] = []  # type: ignore # noqa
-        self.active_plot = None
-        self.digits: int = digits
-        self._datum_xy: Tuple[int, float] = (0, 0)
-
-        self._hovered: Set[pg.GraphicsObject] = set()
-        self._trackers: Set[pg.GraphicsObject] = set()
 
         # value used for rounding y-axis discreet tick steps
         # computing once, up front, here cuz why not
-        self._y_incr_mult = 1 / self.lsc._symbol.tick_size
+        self._y_incr_mult = 1 / self.linked._symbol.tick_size
 
         # line width in view coordinates
         self._lw = self.pixelWidth() * self.lines_pen.width()
@@ -239,6 +322,26 @@ class Cursor(pg.GraphicsObject):
 
         self._y_label_update: bool = True
 
+        self.contents_labels = ContentsLabels(self.linked)
+        self._in_query_mode: bool = False
+
+    @property
+    def in_query_mode(self) -> bool:
+        return self._in_query_mode
+
+    @in_query_mode.setter
+    def in_query_mode(self, value: bool) -> None:
+        if self._in_query_mode and not value:
+
+            # edge trigger "off" hide all labels
+            self.contents_labels.hide()
+
+        elif not self._in_query_mode and value:
+            # edge trigger "on" hide all labels
+            self.contents_labels.update_labels(self._datum_xy[0])
+
+        self._in_query_mode = value
+
     def add_hovered(
         self,
         item: pg.GraphicsObject,
@@ -320,7 +423,7 @@ class Cursor(pg.GraphicsObject):
         # the current sample under the mouse
         cursor = LineDot(
             curve,
-            index=plot._ohlc[-1]['index'],
+            index=plot._arrays['ohlc'][-1]['index'],
             plot=plot
         )
         plot.addItem(cursor)
@@ -344,7 +447,7 @@ class Cursor(pg.GraphicsObject):
 
     def mouseMoved(
         self,
-        evt: 'Tuple[QMouseEvent]',  # noqa
+        evt: 'tuple[QMouseEvent]',  # noqa
     ) -> None:  # noqa
         """Update horizonal and vertical lines when mouse moves inside
         either the main chart or any indicator subplot.
@@ -392,10 +495,16 @@ class Cursor(pg.GraphicsObject):
                 item.on_tracked_source(ix, iy)
 
         if ix != last_ix:
+
+            if self.in_query_mode:
+                # show contents labels on all linked charts and update
+                # with cursor movement
+                self.contents_labels.update_labels(ix)
+
             for plot, opts in self.graphics.items():
 
                 # update the chart's "contents" label
-                plot.update_contents_labels(ix)
+                # plot.update_contents_labels(ix)
 
                 # move the vertical line to the current "center of bar"
                 opts['vl'].setX(ix + line_offset)

piker/ui/_graphics/_lines.py

@@ -259,10 +259,10 @@ class LevelLine(pg.InfiniteLine):
         detailed control and start end signalling.
 
         """
-        chart = self._chart
+        cursor = self._chart.linked.cursor
 
         # hide y-crosshair
-        chart._cursor.hide_xhair()
+        cursor.hide_xhair()
 
         # highlight
         self.currentPen = self.hoverPen
@@ -308,7 +308,7 @@ class LevelLine(pg.InfiniteLine):
         # This is the final position in the drag
         if ev.isFinish():
             # show y-crosshair again
-            chart._cursor.show_xhair()
+            cursor.show_xhair()
 
     def delete(self) -> None:
         """Remove this line from containing chart/view/scene.
@@ -326,7 +326,7 @@ class LevelLine(pg.InfiniteLine):
 
         # remove from chart/cursor states
         chart = self._chart
-        cur = chart._cursor
+        cur = chart.linked.cursor
 
         if self in cur._hovered:
             cur._hovered.remove(self)
@@ -457,8 +457,7 @@ class LevelLine(pg.InfiniteLine):
         """Mouse hover callback.
 
         """
-        chart = self._chart
+        cur = self._chart.linked.cursor
-        cur = chart._cursor
 
         # hovered
         if (not ev.isExit()) and ev.acceptDrags(QtCore.Qt.LeftButton):
@@ -648,7 +647,10 @@ def order_line(
         # use ``QPathGraphicsItem``s to draw markers in scene coords
         # instead of the old way that was doing the same but by
         # resetting the graphics item transform intermittently
+
+        # XXX: this is our new approach but seems slower?
         # line.add_marker(mk_marker(marker_style, marker_size))
+
         assert not line.markers
 
         # the old way which is still somehow faster?
@@ -659,7 +661,10 @@ def order_line(
             marker_size,
             use_qgpath=False,
         )
-        # manually append for later ``.pain()`` drawing
+        # manually append for later ``InfiniteLine.paint()`` drawing
+        # XXX: this was manually tested as faster then using the
+        # QGraphicsItem around a painter path.. probably needs further
+        # testing to figure out why tf that's true.
         line.markers.append((path, 0, marker_size))
 
     orient_v = 'top' if action == 'sell' else 'bottom'
@@ -754,9 +759,29 @@ def position_line(
         ymn, ymx = vr[1]
         level = line.value()
 
-        if level > ymx or level < ymn:
+        if gt := level > ymx or (lt := level < ymn):
-            line._marker.hide()
+
+            if chartview.mode.name == 'order':
+
+                # provide "nav hub" like indicator for where
+                # the position is on the y-dimension
+                if gt:
+                    # pin to top of view since position is above current
+                    # y-range
+                    pass
+
+                elif lt:
+                    # pin to bottom of view since position is above
+                    # below y-range
+                    pass
+
             else:
+                # order mode is not active
+                # so hide the pp market
+                line._marker.hide()
+
+        else:
+            # pp line is viewable so show marker
             line._marker.show()
 
     vb.sigYRangeChanged.connect(update_pp_nav)
@@ -787,6 +812,7 @@ def position_line(
         style = '>|'
 
     arrow_path = mk_marker(style, size=arrow_size)
+    # XXX: uses new marker drawing approach
     line.add_marker(arrow_path)
     line.set_level(level)
 

piker/ui/_interaction.py

@@ -18,447 +18,209 @@
 Chart view box primitives
 
 """
-from dataclasses import dataclass, field
+from contextlib import asynccontextmanager
-from typing import Optional, Dict
+import time
+from typing import Optional, Callable
 
 import pyqtgraph as pg
-from PyQt5.QtCore import QPointF
+from PyQt5.QtCore import Qt, QEvent
-from pyqtgraph import ViewBox, Point, QtCore, QtGui
+from pyqtgraph import ViewBox, Point, QtCore
 from pyqtgraph import functions as fn
 import numpy as np
+import trio
 
 from ..log import get_logger
-from ._style import _min_points_to_show, hcolor, _font
+from ._style import _min_points_to_show
-from ._graphics._lines import order_line, LevelLine
+from ._editors import SelectRect
+from ._window import main_window
 
 
 log = get_logger(__name__)
 
 
-class SelectRect(QtGui.QGraphicsRectItem):
+async def handle_viewmode_inputs(
+
+    view: 'ChartView',
+    recv_chan: trio.abc.ReceiveChannel,
 
-    def __init__(
-        self,
-        viewbox: ViewBox,
-        color: str = 'dad_blue',
 ) -> None:
-        super().__init__(0, 0, 1, 1)
 
-        # self.rbScaleBox = QtGui.QGraphicsRectItem(0, 0, 1, 1)
+    mode = view.mode
-        self.vb = viewbox
-        self._chart: 'ChartPlotWidget' = None  # noqa
 
-        # override selection box color
+    # track edge triggered keys
-        color = QtGui.QColor(hcolor(color))
+    # (https://en.wikipedia.org/wiki/Interrupt#Triggering_methods)
-        self.setPen(fn.mkPen(color, width=1))
+    pressed: set[str] = set()
-        color.setAlpha(66)
-        self.setBrush(fn.mkBrush(color))
-        self.setZValue(1e9)
-        self.hide()
-        self._label = None
 
-        label = self._label = QtGui.QLabel()
+    last = time.time()
-        label.setTextFormat(0)  # markdown
+    trigger_mode: str
-        label.setFont(_font.font)
+    action: str
-        label.setMargin(0)
-        label.setAlignment(
-            QtCore.Qt.AlignLeft
-            # | QtCore.Qt.AlignVCenter
-        )
 
-        # proxy is created after containing scene is initialized
+    # for quick key sequence-combo pattern matching
-        self._label_proxy = None
+    # we have a min_tap period and these should not
-        self._abs_top_right = None
+    # ever be auto-repeats since we filter those at the
+    # event filter level prior to the above mem chan.
+    min_tap = 1/6
+    fast_key_seq: list[str] = []
+    fast_taps: dict[str, Callable] = {
+        'cc': mode.cancel_all_orders,
+    }
 
-        # TODO: "swing %" might be handy here (data's max/min # % change)
+    async for event, etype, key, mods, text in recv_chan:
-        self._contents = [
+        log.debug(f'key: {key}, mods: {mods}, text: {text}')
-            'change: {pchng:.2f} %',
+        now = time.time()
-            'range: {rng:.2f}',
+        period = now - last
-            'bars: {nbars}',
-            'max: {dmx}',
-            'min: {dmn}',
-            # 'time: {nbars}m',  # TODO: compute this per bar size
-            'sigma: {std:.2f}',
-        ]
 
-    @property
+        # reset mods
-    def chart(self) -> 'ChartPlotWidget':  # noqa
+        ctrl: bool = False
-        return self._chart
+        shift: bool = False
 
-    @chart.setter
+        # press branch
-    def chart(self, chart: 'ChartPlotWidget') -> None:  # noqa
+        if etype in {QEvent.KeyPress}:
-        self._chart = chart
-        chart.sigRangeChanged.connect(self.update_on_resize)
-        palette = self._label.palette()
 
-        # TODO: get bg color working
+            pressed.add(key)
-        palette.setColor(
-            self._label.backgroundRole(),
-            # QtGui.QColor(chart.backgroundBrush()),
-            QtGui.QColor(hcolor('papas_special')),
-        )
 
-    def update_on_resize(self, vr, r):
+            if (
-        """Re-position measure label on view range change.
+                # clear any old values not part of a "fast" tap sequence:
+                # presumes the period since last tap is longer then our
+                # min_tap period
+                fast_key_seq and period >= min_tap or
 
-        """
+                # don't support more then 2 key sequences for now
-        if self._abs_top_right:
+                len(fast_key_seq) > 2
-            self._label_proxy.setPos(
+            ):
-                self.vb.mapFromView(self._abs_top_right)
+                fast_key_seq.clear()
-            )
 
-    def mouse_drag_released(
+            # capture key to fast tap sequence if we either
-        self,
+            # have no previous keys or we do and the min_tap period is
-        p1: QPointF,
+            # met
-        p2: QPointF
+            if (
-    ) -> None:
+                not fast_key_seq or
-        """Called on final button release for mouse drag with start and
+                period <= min_tap and fast_key_seq
-        end positions.
+            ):
+                fast_key_seq.append(text)
+                log.debug(f'fast keys seqs {fast_key_seq}')
 
-        """
+            # mods run through
-        self.set_pos(p1, p2)
+            if mods == Qt.ShiftModifier:
+                shift = True
 
-    def set_pos(
+            if mods == Qt.ControlModifier:
-        self,
+                ctrl = True
-        p1: QPointF,
-        p2: QPointF
-    ) -> None:
-        """Set position of selection rect and accompanying label, move
-        label to match.
 
-        """
+            # SEARCH MODE #
-        if self._label_proxy is None:
+            # ctlr-<space>/<l> for "lookup", "search" -> open search tree
-            # https://doc.qt.io/qt-5/qgraphicsproxywidget.html
+            if (
-            self._label_proxy = self.vb.scene().addWidget(self._label)
+                ctrl and key in {
+                    Qt.Key_L,
+                    Qt.Key_Space,
+                }
+            ):
+                view._chart._lc.godwidget.search.focus()
 
-        start_pos = self.vb.mapToView(p1)
+            # esc and ctrl-c
-        end_pos = self.vb.mapToView(p2)
+            if key == Qt.Key_Escape or (ctrl and key == Qt.Key_C):
+                # ctrl-c as cancel
+                # https://forum.qt.io/topic/532/how-to-catch-ctrl-c-on-a-widget/9
+                view.select_box.clear()
 
-        # map to view coords and update area
+            # cancel order or clear graphics
-        r = QtCore.QRectF(start_pos, end_pos)
+            if key == Qt.Key_C or key == Qt.Key_Delete:
 
-        # old way; don't need right?
+                mode.cancel_orders_under_cursor()
-        # lr = QtCore.QRectF(p1, p2)
-        # r = self.vb.childGroup.mapRectFromParent(lr)
 
-        self.setPos(r.topLeft())
+            # View modes
-        self.resetTransform()
+            if key == Qt.Key_R:
-        self.scale(r.width(), r.height())
-        self.show()
 
-        y1, y2 = start_pos.y(), end_pos.y()
+                # edge triggered default view activation
-        x1, x2 = start_pos.x(), end_pos.x()
+                view.chart.default_view()
 
-        # TODO: heh, could probably use a max-min streamin algo here too
+            if len(fast_key_seq) > 1:
-        _, xmn = min(y1, y2), min(x1, x2)
+                # begin matches against sequences
-        ymx, xmx = max(y1, y2), max(x1, x2)
+                func: Callable = fast_taps.get(''.join(fast_key_seq))
+                if func:
+                    func()
+                    fast_key_seq.clear()
 
-        pchng = (y2 - y1) / y1 * 100
+        # release branch
-        rng = abs(y1 - y2)
+        elif etype in {QEvent.KeyRelease}:
 
-        ixmn, ixmx = round(xmn), round(xmx)
+            if key in pressed:
-        nbars = ixmx - ixmn + 1
+                pressed.remove(key)
 
-        data = self._chart._ohlc[ixmn:ixmx]
+        # QUERY MODE #
+        if {Qt.Key_Q}.intersection(pressed):
+
+            view.linkedsplits.cursor.in_query_mode = True
 
-        if len(data):
-            std = data['close'].std()
-            dmx = data['high'].max()
-            dmn = data['low'].min()
         else:
-            dmn = dmx = std = np.nan
+            view.linkedsplits.cursor.in_query_mode = False
 
-        # update label info
+        # SELECTION MODE #
-        self._label.setText('\n'.join(self._contents).format(
-            pchng=pchng, rng=rng, nbars=nbars,
-            std=std, dmx=dmx, dmn=dmn,
-        ))
 
-        # print(f'x2, y2: {(x2, y2)}')
+        if shift:
-        # print(f'xmn, ymn: {(xmn, ymx)}')
+            if view.state['mouseMode'] == ViewBox.PanMode:
-
+                view.setMouseMode(ViewBox.RectMode)
-        label_anchor = Point(xmx + 2, ymx)
-
-        # XXX: in the drag bottom-right -> top-left case we don't
-        # want the label to overlay the box.
-        # if (x2, y2) == (xmn, ymx):
-        #     # could do this too but needs to be added after coords transform
-        #     # label_anchor = Point(x2, y2 + self._label.height())
-        #     label_anchor = Point(xmn, ymn)
-
-        self._abs_top_right = label_anchor
-        self._label_proxy.setPos(self.vb.mapFromView(label_anchor))
-        # self._label.show()
-
-    def clear(self):
-        """Clear the selection box from view.
-
-        """
-        self._label.hide()
-        self.hide()
-
-
-# global store of order-lines graphics
-# keyed by uuid4 strs - used to sync draw
-# order lines **after** the order is 100%
-# active in emsd
-_order_lines: Dict[str, LevelLine] = {}
-
-
-@dataclass
-class LineEditor:
-    """The great editor of linez..
-
-    """
-    view: 'ChartView'
-
-    _order_lines: field(default_factory=_order_lines)
-    chart: 'ChartPlotWidget' = None  # type: ignore # noqa
-    _active_staged_line: LevelLine = None
-    _stage_line: LevelLine = None
-
-    def stage_line(
-        self,
-        action: str,
-
-        color: str = 'alert_yellow',
-        hl_on_hover: bool = False,
-        dotted: bool = False,
-
-        # fields settings
-        size: Optional[int] = None,
-    ) -> LevelLine:
-        """Stage a line at the current chart's cursor position
-        and return it.
-
-        """
-        # chart.setCursor(QtCore.Qt.PointingHandCursor)
-
-        chart = self.chart._cursor.active_plot
-        cursor = chart._cursor
-        y = chart._cursor._datum_xy[1]
-
-        symbol = chart._lc.symbol
-
-        # line = self._stage_line
-        # if not line:
-        # add a "staged" cursor-tracking line to view
-        # and cash it in a a var
-        if self._active_staged_line:
-            self.unstage_line()
-
-        line = order_line(
-            chart,
-
-            level=y,
-            level_digits=symbol.digits(),
-            size=size,
-            size_digits=symbol.lot_digits(),
-
-            # just for the stage line to avoid
-            # flickering while moving the cursor
-            # around where it might trigger highlight
-            # then non-highlight depending on sensitivity
-            always_show_labels=True,
-
-            # kwargs
-            color=color,
-            # don't highlight the "staging" line
-            hl_on_hover=hl_on_hover,
-            dotted=dotted,
-            exec_type='dark' if dotted else 'live',
-            action=action,
-            show_markers=True,
-
-            # prevent flickering of marker while moving/tracking cursor
-            only_show_markers_on_hover=False,
-        )
-
-        self._active_staged_line = line
-
-        # hide crosshair y-line and label
-        cursor.hide_xhair()
-
-        # add line to cursor trackers
-        cursor._trackers.add(line)
-
-        return line
-
-    def unstage_line(self) -> LevelLine:
-        """Inverse of ``.stage_line()``.
-
-        """
-        # chart = self.chart._cursor.active_plot
-        # # chart.setCursor(QtCore.Qt.ArrowCursor)
-        cursor = self.chart._cursor
-
-        # delete "staged" cursor tracking line from view
-        line = self._active_staged_line
-        if line:
-            cursor._trackers.remove(line)
-            line.delete()
-
-        self._active_staged_line = None
-
-        # show the crosshair y line and label
-        cursor.show_xhair()
-
-    def create_order_line(
-        self,
-        uuid: str,
-        level: float,
-        chart: 'ChartPlotWidget',  # noqa
-        size: float,
-        action: str,
-    ) -> LevelLine:
-
-        line = self._active_staged_line
-        if not line:
-            raise RuntimeError("No line is currently staged!?")
-
-        sym = chart._lc.symbol
-
-        line = order_line(
-            chart,
-
-            # label fields default values
-            level=level,
-            level_digits=sym.digits(),
-
-            size=size,
-            size_digits=sym.lot_digits(),
-
-            # LevelLine kwargs
-            color=line.color,
-            dotted=line._dotted,
-
-            show_markers=True,
-            only_show_markers_on_hover=True,
-
-            action=action,
-        )
-
-        # for now, until submission reponse arrives
-        line.hide_labels()
-
-        # register for later lookup/deletion
-        self._order_lines[uuid] = line
-
-        return line
-
-    def commit_line(self, uuid: str) -> LevelLine:
-        """Commit a "staged line" to view.
-
-        Submits the line graphic under the cursor as a (new) permanent
-        graphic in view.
-
-        """
-        try:
-            line = self._order_lines[uuid]
-        except KeyError:
-            log.warning(f'No line for {uuid} could be found?')
-            return
         else:
-            assert line.oid == uuid
+            view.setMouseMode(ViewBox.PanMode)
-            line.show_labels()
 
-            # TODO: other flashy things to indicate the order is active
+        # ORDER MODE #
+        # live vs. dark trigger + an action {buy, sell, alert}
 
-            log.debug(f'Level active for level: {line.value()}')
+        order_keys_pressed = {
+            Qt.Key_A,
+            Qt.Key_F,
+            Qt.Key_D
+        }.intersection(pressed)
 
-            return line
+        if order_keys_pressed:
+            if (
+                # 's' for "submit" to activate "live" order
+                Qt.Key_S in pressed or
+                ctrl
+            ):
+                trigger_mode: str = 'live'
 
-    def lines_under_cursor(self):
+            else:
-        """Get the line(s) under the cursor position.
+                trigger_mode: str = 'dark'
 
-        """
+            # order mode trigger "actions"
-        # Delete any hoverable under the cursor
+            if Qt.Key_D in pressed:  # for "damp eet"
-        return self.chart._cursor._hovered
+                action = 'sell'
 
-    def remove_line(
+            elif Qt.Key_F in pressed:  # for "fillz eet"
-        self,
+                action = 'buy'
-        line: LevelLine = None,
-        uuid: str = None,
-    ) -> LevelLine:
-        """Remove a line by refernce or uuid.
 
-        If no lines or ids are provided remove all lines under the
+            elif Qt.Key_A in pressed:
-        cursor position.
+                action = 'alert'
+                trigger_mode = 'live'
 
-        """
+            view.order_mode = True
-        if line:
-            uuid = line.oid
 
-        # try to look up line from our registry
+            # XXX: order matters here for line style!
-        line = self._order_lines.pop(uuid, None)
+            view.mode._exec_mode = trigger_mode
-        if line:
+            view.mode.set_exec(action)
 
-            # if hovered remove from cursor set
+            prefix = trigger_mode + '-' if action != 'alert' else ''
-            hovered = self.chart._cursor._hovered
+            view._chart.window().mode_label.setText(
-            if line in hovered:
+                f'mode: {prefix}{action}')
-                hovered.remove(line)
 
-                # make sure the xhair doesn't get left off
+        else:  # none active
-                # just because we never got a un-hover event
+            # if none are pressed, remove "staged" level
-                self.chart._cursor.show_xhair()
+            # line under cursor position
+            view.mode.lines.unstage_line()
 
-            line.delete()
+            if view.hasFocus():
-            return line
+                # update mode label
+                view._chart.window().mode_label.setText('mode: view')
 
+            view.order_mode = False
 
-@dataclass
+        last = time.time()
-class ArrowEditor:
-
-    chart: 'ChartPlotWidget'  # noqa
-    _arrows: field(default_factory=dict)
-
-    def add(
-        self,
-        uid: str,
-        x: float,
-        y: float,
-        color='default',
-        pointing: Optional[str] = None,
-    ) -> pg.ArrowItem:
-        """Add an arrow graphic to view at given (x, y).
-
-        """
-        angle = {
-            'up': 90,
-            'down': -90,
-            None: 180,  # pointing to right (as in an alert)
-        }[pointing]
-
-        # scale arrow sizing to dpi-aware font
-        size = _font.font.pixelSize() * 0.8
-
-        arrow = pg.ArrowItem(
-            angle=angle,
-            baseAngle=0,
-            headLen=size,
-            headWidth=size/2,
-            tailLen=None,
-            pxMode=True,
-
-            # coloring
-            pen=pg.mkPen(hcolor('papas_special')),
-            brush=pg.mkBrush(hcolor(color)),
-        )
-        arrow.setPos(x, y)
-
-        self._arrows[uid] = arrow
-
-        # render to view
-        self.chart.plotItem.addItem(arrow)
-
-        return arrow
-
-    def remove(self, arrow) -> bool:
-        self.chart.plotItem.removeItem(arrow)
 
 
 class ChartView(ViewBox):
-    """Price chart view box with interaction behaviors you'd expect from
+    '''
+    Price chart view box with interaction behaviors you'd expect from
     any interactive platform:
 
         - zoom on mouse scroll that auto fits y-axis
@@ -466,31 +228,48 @@ class ChartView(ViewBox):
         - zoom on x to most recent in view datum
         - zoom on right-click-n-drag to cursor position
 
-    """
+    '''
-
     mode_name: str = 'mode: view'
 
     def __init__(
+
         self,
+        name: str,
         parent: pg.PlotItem = None,
         **kwargs,
+
     ):
         super().__init__(parent=parent, **kwargs)
+
         # disable vertical scrolling
         self.setMouseEnabled(x=True, y=False)
-        self.linked_charts = None
+
-        self.select_box = SelectRect(self)
+        self.linkedsplits = None
-        self.addItem(self.select_box, ignoreBounds=True)
         self._chart: 'ChartPlotWidget' = None  # noqa
 
-        self.mode = None
+        # add our selection box annotator
+        self.select_box = SelectRect(self)
+        self.addItem(self.select_box, ignoreBounds=True)
 
-        # kb ctrls processing
+        self.name = name
-        self._key_buffer = []
+        self.mode = None
-        self._key_active: bool = False
+        self.order_mode: bool = False
 
         self.setFocusPolicy(QtCore.Qt.StrongFocus)
 
+    @asynccontextmanager
+    async def open_async_input_handler(
+        self,
+    ) -> 'ChartView':
+        from . import _event
+
+        async with _event.open_handler(
+            self,
+            event_types={QEvent.KeyPress, QEvent.KeyRelease},
+            async_handler=handle_viewmode_inputs,
+        ):
+            yield self
+
     @property
     def chart(self) -> 'ChartPlotWidget':  # type: ignore # noqa
         return self._chart
@@ -501,21 +280,21 @@ class ChartView(ViewBox):
         self.select_box.chart = chart
 
     def wheelEvent(self, ev, axis=None):
-        """Override "center-point" location for scrolling.
+        '''Override "center-point" location for scrolling.
 
         This is an override of the ``ViewBox`` method simply changing
         the center of the zoom to be the y-axis.
 
         TODO: PR a method into ``pyqtgraph`` to make this configurable
-        """
 
+        '''
         if axis in (0, 1):
             mask = [False, False]
             mask[axis] = self.state['mouseEnabled'][axis]
         else:
             mask = self.state['mouseEnabled'][:]
 
-        chart = self.linked_charts.chart
+        chart = self.linkedsplits.chart
 
         # don't zoom more then the min points setting
         l, lbar, rbar, r = chart.bars_range()
@@ -525,7 +304,7 @@ class ChartView(ViewBox):
             log.debug("Max zoom bruh...")
             return
 
-        if ev.delta() < 0 and vl >= len(chart._ohlc) + 666:
+        if ev.delta() < 0 and vl >= len(chart._arrays['ohlc']) + 666:
             log.debug("Min zoom bruh...")
             return
 
@@ -573,7 +352,6 @@ class ChartView(ViewBox):
             end_of_l1,
             key=lambda p: p.x()
         )
-        # breakpoint()
         # focal = pg.Point(last_bar.x() + end_of_l1)
 
         self._resetTarget()
@@ -693,131 +471,16 @@ class ChartView(ViewBox):
 
         elif button == QtCore.Qt.LeftButton:
             # when in order mode, submit execution
-            if self._key_active:
+            if self.order_mode:
                 ev.accept()
                 self.mode.submit_exec()
 
-    def keyReleaseEvent(self, ev: QtCore.QEvent):
+    def keyReleaseEvent(self, event: QtCore.QEvent) -> None:
-        """
+        '''This routine is rerouted to an async handler.
-        Key release to normally to trigger release of input mode
+        '''
+        pass
 
-        """
+    def keyPressEvent(self, event: QtCore.QEvent) -> None:
-        # TODO: is there a global setting for this?
+        '''This routine is rerouted to an async handler.
-        if ev.isAutoRepeat():
+        '''
-            ev.ignore()
+        pass
-            return
-
-        ev.accept()
-        # text = ev.text()
-        key = ev.key()
-        mods = ev.modifiers()
-
-        if key == QtCore.Qt.Key_Shift:
-            # if self.state['mouseMode'] == ViewBox.RectMode:
-            self.setMouseMode(ViewBox.PanMode)
-
-        # ctlalt = False
-        # if (QtCore.Qt.AltModifier | QtCore.Qt.ControlModifier) == mods:
-        #     ctlalt = True
-
-        # if self.state['mouseMode'] == ViewBox.RectMode:
-        # if key == QtCore.Qt.Key_Space:
-        if mods == QtCore.Qt.ControlModifier or key == QtCore.Qt.Key_Control:
-            self.mode._exec_mode = 'dark'
-
-        if key in {QtCore.Qt.Key_A, QtCore.Qt.Key_F, QtCore.Qt.Key_D}:
-            # remove "staged" level line under cursor position
-            self.mode.lines.unstage_line()
-
-        self._key_active = False
-
-    def keyPressEvent(self, ev: QtCore.QEvent) -> None:
-        """
-        This routine should capture key presses in the current view box.
-
-        """
-        # TODO: is there a global setting for this?
-        if ev.isAutoRepeat():
-            ev.ignore()
-            return
-
-        ev.accept()
-        text = ev.text()
-        key = ev.key()
-        mods = ev.modifiers()
-
-        print(f'text: {text}, key: {key}')
-
-        if mods == QtCore.Qt.ShiftModifier:
-            if self.state['mouseMode'] == ViewBox.PanMode:
-                self.setMouseMode(ViewBox.RectMode)
-
-        # ctrl
-        ctrl = False
-        if mods == QtCore.Qt.ControlModifier:
-            ctrl = True
-            self.mode._exec_mode = 'live'
-
-        self._key_active = True
-
-        # ctrl + alt
-        # ctlalt = False
-        # if (QtCore.Qt.AltModifier | QtCore.Qt.ControlModifier) == mods:
-        #     ctlalt = True
-
-        # ctlr-<space>/<l> for "lookup", "search" -> open search tree
-        if ctrl and key in {
-            QtCore.Qt.Key_L,
-            QtCore.Qt.Key_Space,
-        }:
-            search = self._chart._lc.chart_space.search
-            search.focus()
-
-        # esc
-        if key == QtCore.Qt.Key_Escape or (ctrl and key == QtCore.Qt.Key_C):
-            # ctrl-c as cancel
-            # https://forum.qt.io/topic/532/how-to-catch-ctrl-c-on-a-widget/9
-            self.select_box.clear()
-
-        # cancel order or clear graphics
-        if key == QtCore.Qt.Key_C or key == QtCore.Qt.Key_Delete:
-            # delete any lines under the cursor
-            mode = self.mode
-            for line in mode.lines.lines_under_cursor():
-                mode.book.cancel(uuid=line.oid)
-
-        self._key_buffer.append(text)
-
-        # View modes
-        if key == QtCore.Qt.Key_R:
-            self.chart.default_view()
-
-        # Order modes: stage orders at the current cursor level
-
-        elif key == QtCore.Qt.Key_D:  # for "damp eet"
-            self.mode.set_exec('sell')
-
-        elif key == QtCore.Qt.Key_F:  # for "fillz eet"
-            self.mode.set_exec('buy')
-
-        elif key == QtCore.Qt.Key_A:
-            self.mode.set_exec('alert')
-
-        # XXX: Leaving this for light reference purposes, there
-        # seems to be some work to at least gawk at for history mgmt.
-
-        # Key presses are used only when mouse mode is RectMode
-        # The following events are implemented:
-        # ctrl-A : zooms out to the default "full" view of the plot
-        # ctrl-+ : moves forward in the zooming stack (if it exists)
-        # ctrl-- : moves backward in the zooming stack (if it exists)
-
-        #     self.scaleHistory(-1)
-        # elif ev.text() in ['+', '=']:
-        #     self.scaleHistory(1)
-        # elif ev.key() == QtCore.Qt.Key_Backspace:
-        #     self.scaleHistory(len(self.axHistory))
-        else:
-            # maybe propagate to parent widget
-            ev.ignore()
-            self._key_active = False

piker/ui/_label.py

@@ -89,11 +89,16 @@ def right_axis(
 
 class Label:
     """
+    A plain ol' "scene label" using an underlying ``QGraphicsTextItem``.
+
     After hacking for many days on multiple "label" systems inside
     ``pyqtgraph`` yet again we're left writing our own since it seems
-    all of those are over complicated, ad-hoc, pieces of garbage that
+    all of those are over complicated, ad-hoc, transform-mangling,
-    can't accomplish the simplest things, such as pinning to the left
+    messes which can't accomplish the simplest things via their inputs
-    hand side of a view box.
+    (such as pinning to the left hand side of a view box).
+
+    Here we do the simple thing where the label uses callables to figure
+    out the (x, y) coordinate "pin point": nice and simple.
 
     This type is another effort (see our graphics) to start making
     small, re-usable label components that can actually be used to build
@@ -104,6 +109,7 @@ class Label:
 
         self,
         view: pg.ViewBox,
+
         fmt_str: str,
         color: str = 'bracket',
         x_offset: float = 0,

piker/ui/_search.py

@@ -447,7 +447,7 @@ class SearchBar(QtWidgets.QLineEdit):
 
         self.view: CompleterView = view
         self.dpi_font = font
-        self.chart_app = parent_chart
+        self.godwidget = parent_chart
 
         # size it as we specify
         # https://doc.qt.io/qt-5/qsizepolicy.html#Policy-enum
@@ -496,12 +496,12 @@ class SearchWidget(QtGui.QWidget):
 
     def __init__(
         self,
-        chart_space: 'ChartSpace',  # type: ignore # noqa
+        godwidget: 'GodWidget',  # type: ignore # noqa
         columns: List[str] = ['src', 'symbol'],
         parent=None,
 
     ) -> None:
-        super().__init__(parent or chart_space)
+        super().__init__(parent or godwidget)
 
         # size it as we specify
         self.setSizePolicy(
@@ -509,7 +509,7 @@ class SearchWidget(QtGui.QWidget):
             QtWidgets.QSizePolicy.Fixed,
         )
 
-        self.chart_app = chart_space
+        self.godwidget = godwidget
 
         self.vbox = QtGui.QVBoxLayout(self)
         self.vbox.setContentsMargins(0, 0, 0, 0)
@@ -540,7 +540,7 @@ class SearchWidget(QtGui.QWidget):
         )
         self.bar = SearchBar(
             parent=self,
-            parent_chart=chart_space,
+            parent_chart=godwidget,
             view=self.view,
         )
         self.bar_hbox.addWidget(self.bar)
@@ -557,7 +557,7 @@ class SearchWidget(QtGui.QWidget):
             # fill cache list if nothing existing
             self.view.set_section_entries(
                 'cache',
-                list(reversed(self.chart_app._chart_cache)),
+                list(reversed(self.godwidget._chart_cache)),
                 clear_all=True,
             )
 
@@ -611,7 +611,7 @@ class SearchWidget(QtGui.QWidget):
             return None
 
         provider, symbol = value
-        chart = self.chart_app
+        chart = self.godwidget
 
         log.info(f'Requesting symbol: {symbol}.{provider}')
 
@@ -632,7 +632,7 @@ class SearchWidget(QtGui.QWidget):
             # Re-order the symbol cache on the chart to display in
             # LIFO order. this is normally only done internally by
             # the chart on new symbols being loaded into memory
-            chart.set_chart_symbol(fqsn, chart.linkedcharts)
+            chart.set_chart_symbol(fqsn, chart.linkedsplits)
 
             self.view.set_section_entries(
                 'cache',
@@ -650,6 +650,7 @@ _search_enabled: bool = False
 
 
 async def pack_matches(
+
     view: CompleterView,
     has_results: dict[str, set[str]],
     matches: dict[(str, str), [str]],
@@ -823,7 +824,7 @@ async def fill_results(
 
 async def handle_keyboard_input(
 
-    search: SearchWidget,
+    searchbar: SearchBar,
     recv_chan: trio.abc.ReceiveChannel,
 
 ) -> None:
@@ -831,8 +832,9 @@ async def handle_keyboard_input(
     global _search_active, _search_enabled
 
     # startup
-    chart = search.chart_app
+    bar = searchbar
-    bar = search.bar
+    search = searchbar.parent()
+    chart = search.godwidget
     view = bar.view
     view.set_font_size(bar.dpi_font.px_size)
 
@@ -851,7 +853,7 @@ async def handle_keyboard_input(
             )
         )
 
-        async for event, key, mods, txt in recv_chan:
+        async for event, etype, key, mods, txt in recv_chan:
 
             log.debug(f'key: {key}, mods: {mods}, txt: {txt}')
 
@@ -889,7 +891,7 @@ async def handle_keyboard_input(
 
                 # kill the search and focus back on main chart
                 if chart:
-                    chart.linkedcharts.focus()
+                    chart.linkedsplits.focus()
 
                 continue
 

piker/ui/_window.py

@@ -21,7 +21,8 @@ Qt main window singletons and stuff.
 import os
 import signal
 import time
-from typing import Callable
+from typing import Callable, Optional, Union
+import uuid
 
 from pyqtgraph import QtGui
 from PyQt5 import QtCore
@@ -42,25 +43,101 @@ class MultiStatus:
     def __init__(self, bar, statuses) -> None:
         self.bar = bar
         self.statuses = statuses
+        self._to_clear: set = set()
+        self._status_groups: dict[str, (set, Callable)] = {}
 
     def open_status(
+
         self,
         msg: str,
-    ) -> Callable[..., None]:
+        final_msg: Optional[str] = None,
+        clear_on_next: bool = False,
+        group_key: Optional[Union[bool, str]] = False,
+
+    ) -> Union[Callable[..., None], str]:
         '''Add a status to the status bar and return a close callback which
         when called will remove the status ``msg``.
 
         '''
+        for old_msg in self._to_clear:
+            try:
+                self.statuses.remove(old_msg)
+            except ValueError:
+                pass
+
         self.statuses.append(msg)
 
         def remove_msg() -> None:
+            try:
                 self.statuses.remove(msg)
-            self.render()
+            except ValueError:
+                pass
 
             self.render()
-        return remove_msg
+
+            if final_msg is not None:
+                self.statuses.append(final_msg)
+                self.render()
+                self._to_clear.add(final_msg)
+
+        ret = remove_msg
+
+        # create a "status group" such that new `.open_status()`
+        # calls can be made passing in the returned group key.
+        # once all clear callbacks have been called from all statuses
+        # in the group the final status msg to be removed will be the one
+        # the one provided when `group_key=True`, this way you can
+        # create a long living status that completes once all
+        # sub-statuses have finished.
+        if group_key is True:
+            if clear_on_next:
+                ValueError("Can't create group status and clear it on next?")
+
+            # generate a key for a new "status group"
+            new_group_key = str(uuid.uuid4())
+
+            def pop_group_and_clear():
+
+                subs, final_clear = self._status_groups.pop(new_group_key)
+                assert not subs
+                return remove_msg()
+
+            self._status_groups[new_group_key] = (set(), pop_group_and_clear)
+            ret = new_group_key
+
+        elif group_key:
+
+            def pop_from_group_and_maybe_clear_group():
+                # remove the message for this sub-status
+                remove_msg()
+
+                # check to see if all other substatuses have cleared
+                group_tup = self._status_groups.get(group_key)
+
+                if group_tup:
+                    subs, group_clear = group_tup
+                    try:
+                        subs.remove(msg)
+                    except KeyError:
+                        raise KeyError(f'no msg {msg} for group {group_key}!?')
+
+                    if not subs:
+                        group_clear()
+
+            self._status_groups[group_key][0].add(msg)
+            ret = pop_from_group_and_maybe_clear_group
+
+        self.render()
+
+        if clear_on_next:
+            self._to_clear.add(msg)
+
+        return ret
 
     def render(self) -> None:
+        '''Display all open statuses to bar.
+
+        '''
         if self.statuses:
             self.bar.showMessage(f'{" ".join(self.statuses)}')
         else:

piker/ui/order_mode.py

@@ -26,11 +26,12 @@ from typing import Optional, Dict, Callable, Any
 import uuid
 
 import pyqtgraph as pg
-import trio
 from pydantic import BaseModel
+import trio
 
 from ._graphics._lines import LevelLine, position_line
-from ._interaction import LineEditor, ArrowEditor, _order_lines
+from ._editors import LineEditor, ArrowEditor
+from ._window import MultiStatus, main_window
 from ..clearing._client import open_ems, OrderBook
 from ..data._source import Symbol
 from ..log import get_logger
@@ -48,18 +49,31 @@ class Position(BaseModel):
 
 @dataclass
 class OrderMode:
-    """Major mode for placing orders on a chart view.
+    '''Major mode for placing orders on a chart view.
 
     This is the default mode that pairs with "follow mode"
     (when wathing the rt price update at the current time step)
-    and allows entering orders using the ``a, d, f`` keys and
+    and allows entering orders using mouse and keyboard.
-    cancelling moused-over orders with the ``c`` key.
+    This object is chart oriented, so there is an instance per
+    chart / view currently.
 
-    """
+    Current manual:
+        a -> alert
+        s/ctrl -> submission type modifier {on: live, off: dark}
+        f (fill) -> buy limit order
+        d (dump) -> sell limit order
+        c (cancel) -> cancel order under cursor
+        cc -> cancel all submitted orders on chart
+        mouse click and drag -> modify current order under cursor
+
+    '''
     chart: 'ChartPlotWidget'  #  type: ignore # noqa
     book: OrderBook
     lines: LineEditor
     arrows: ArrowEditor
+    status_bar: MultiStatus
+    name: str = 'order'
+
     _colors = {
         'alert': 'alert_yellow',
         'buy': 'buy_green',
@@ -71,7 +85,8 @@ class OrderMode:
     _position: Dict[str, Any] = field(default_factory=dict)
     _position_line: dict = None
 
-    key_map: Dict[str, Callable] = field(default_factory=dict)
+    _pending_submissions: dict[str, (LevelLine, Callable)] = field(
+        default_factory=dict)
 
     def on_position_update(
         self,
@@ -108,12 +123,18 @@ class OrderMode:
         """Set execution mode.
 
         """
+        # not initialized yet
+        if not self.chart.linked.cursor:
+            return
+
         self._action = action
         self.lines.stage_line(
 
             color=self._colors[action],
             # hl_on_hover=True if self._exec_mode == 'live' else False,
-            dotted=True if self._exec_mode == 'dark' else False,
+            dotted=True if (
+                self._exec_mode == 'dark' and action != 'alert'
+            ) else False,
             size=size or self._size,
             action=action,
         )
@@ -127,6 +148,13 @@ class OrderMode:
 
         """
         line = self.lines.commit_line(uuid)
+
+        pending = self._pending_submissions.get(uuid)
+        if pending:
+            order_line, func = pending
+            assert order_line is line
+            func()
+
         return line
 
     def on_fill(
@@ -182,8 +210,12 @@ class OrderMode:
 
         if msg is not None:
             self.lines.remove_line(uuid=uuid)
-            self.chart._cursor.show_xhair()
+            self.chart.linked.cursor.show_xhair()
 
+            pending = self._pending_submissions.pop(uuid, None)
+            if pending:
+                order_line, func = pending
+                func()
         else:
             log.warning(
                 f'Received cancel for unsubmitted order {pformat(msg)}'
@@ -206,8 +238,9 @@ class OrderMode:
 
         size = size or self._size
 
-        chart = self.chart._cursor.active_plot
+        cursor = self.chart.linked.cursor
-        y = chart._cursor._datum_xy[1]
+        chart = cursor.active_plot
+        y = cursor._datum_xy[1]
 
         symbol = self.chart._lc._symbol
 
@@ -238,17 +271,70 @@ class OrderMode:
         )
         line.oid = uid
 
+        # enter submission which will be popped once a response
+        # from the EMS is received to move the order to a different# status
+        self._pending_submissions[uid] = (
+            line,
+            self.status_bar.open_status(
+                f'submitting {self._exec_mode}-{action}',
+                final_msg=f'submitted {self._exec_mode}-{action}',
+                clear_on_next=True,
+            )
+        )
+
         # hook up mouse drag handlers
         line._on_drag_start = self.order_line_modify_start
         line._on_drag_end = self.order_line_modify_complete
 
         return line
 
-    def cancel_order_under_cursor(self) -> None:
+    def cancel_orders_under_cursor(self) -> list[str]:
-        for line in self.lines.lines_under_cursor():
+        return self.cancel_orders_from_lines(
-            self.book.cancel(uuid=line.oid)
+            self.lines.lines_under_cursor()
+        )
+
+    def cancel_all_orders(self) -> list[str]:
+        '''Cancel all orders for the current chart.
+
+        '''
+        return self.cancel_orders_from_lines(
+            self.lines.all_lines()
+        )
+
+    def cancel_orders_from_lines(
+        self,
+        lines: list[LevelLine],
+
+    ) -> list[str]:
+
+        ids: list = []
+        if lines:
+            key = self.status_bar.open_status(
+                f'cancelling {len(lines)} orders',
+                final_msg=f'cancelled {len(lines)} orders',
+                group_key=True
+            )
+
+            # cancel all active orders and triggers
+            for line in lines:
+                oid = getattr(line, 'oid', None)
+
+                if oid:
+                    self._pending_submissions[oid] = (
+                        line,
+                        self.status_bar.open_status(
+                            f'cancelling order {oid[:6]}',
+                            group_key=key,
+                        ),
+                    )
+
+                    ids.append(oid)
+                    self.book.cancel(uuid=oid)
+
+        return ids
 
     # order-line modify handlers
+
     def order_line_modify_start(
         self,
         line: LevelLine,
@@ -274,13 +360,14 @@ async def open_order_mode(
     chart: pg.PlotWidget,
     book: OrderBook,
 ):
+    status_bar: MultiStatus = main_window().status_bar
     view = chart._vb
-    lines = LineEditor(view=view, chart=chart, _order_lines=_order_lines)
+    lines = LineEditor(chart=chart)
     arrows = ArrowEditor(chart, {})
 
     log.info("Opening order mode")
 
-    mode = OrderMode(chart, book, lines, arrows)
+    mode = OrderMode(chart, book, lines, arrows, status_bar)
     view.mode = mode
 
     asset_type = symbol.type_key
@@ -306,10 +393,13 @@ async def open_order_mode(
 
 
 async def start_order_mode(
+
     chart: 'ChartPlotWidget',  # noqa
     symbol: Symbol,
     brokername: str,
 
+    started: trio.Event,
+
 ) -> None:
     '''Activate chart-trader order mode loop:
       - connect to emsd
@@ -317,12 +407,16 @@ async def start_order_mode(
       - begin order handling loop
 
     '''
-    done = chart.window().status_bar.open_status('Starting order mode...')
+    done = chart.window().status_bar.open_status('starting order mode..')
 
     # spawn EMS actor-service
     async with (
         open_ems(brokername, symbol) as (book, trades_stream, positions),
-        open_order_mode(symbol, chart, book) as order_mode
+        open_order_mode(symbol, chart, book) as order_mode,
+
+        # # start async input handling for chart's view
+        # # await godwidget._task_stack.enter_async_context(
+        # chart._vb.open_async_input_handler(),
     ):
 
         # update any exising positions
@@ -345,6 +439,13 @@ async def start_order_mode(
         # Begin order-response streaming
         done()
 
+        # start async input handling for chart's view
+        async with chart._vb.open_async_input_handler():
+
+            # signal to top level symbol loading task we're ready
+            # to handle input since the ems connection is ready
+            started.set()
+
             # this is where we receive **back** messages
             # about executions **from** the EMS actor
             async for msg in trades_stream: