Merge pull request #189 from pikers/status_bar

Basic status bar

piker/ui/_chart.py

@@ -52,7 +52,6 @@ from ._l1 import L1Labels
 from ._graphics._ohlc import BarItems
 from ._graphics._curve import FastAppendCurve
 from ._style import (
-    _font,
     hcolor,
     CHART_MARGINS,
     _xaxis_at,
@@ -68,7 +67,7 @@ from ..data import maybe_open_shm_array
 from .. import brokers
 from .. import data
 from ..log import get_logger
-from ._exec import run_qtractor, current_screen
+from ._exec import run_qtractor
 from ._interaction import ChartView
 from .order_mode import start_order_mode
 from .. import fsp
@@ -79,10 +78,11 @@ log = get_logger(__name__)
 
 
 class ChartSpace(QtGui.QWidget):
-    """High level widget which contains layouts for organizing
+    '''Highest level composed widget which contains layouts for
-    lower level charts as well as other widgets used to control
+    organizing lower level charts as well as other widgets used to
-    or modify them.
+    control or modify them.
-    """
+
+    '''
     def __init__(self, parent=None):
         super().__init__(parent)
 
@@ -431,6 +431,8 @@ class ChartPlotWidget(pg.PlotWidget):
 
     _l1_labels: L1Labels = None
 
+    mode_name: str = 'mode: view'
+
     # TODO: can take a ``background`` color setting - maybe there's
     # a better one?
 
@@ -1000,7 +1002,7 @@ async def test_bed(
 
 
 _clear_throttle_rate: int = 60  # Hz
-_book_throttle_rate: int = 20  # Hz
+_book_throttle_rate: int = 16  # Hz
 
 
 async def chart_from_quotes(
@@ -1078,7 +1080,14 @@ async def chart_from_quotes(
     tick_margin = 2 * tick_size
 
     last_ask = last_bid = last_clear = time.time()
+    chart.show()
+
     async for quotes in stream:
+
+        # chart isn't actively shown so just skip render cycle
+        if chart._lc.isHidden():
+            continue
+
         for sym, quote in quotes.items():
 
             now = time.time()
@@ -1291,6 +1300,9 @@ async def run_fsp(
     This is called once for each entry in the fsp
     config map.
     """
+    done = linked_charts.window().status_bar.open_status(
+        f'loading FSP: {display_name}..')
+
     async with portal.open_stream_from(
 
         # subactor entrypoint
@@ -1384,13 +1396,20 @@ async def run_fsp(
 
         last = time.time()
 
+        done()
+
         # update chart graphics
         async for value in stream:
 
+            # chart isn't actively shown so just skip render cycle
+            if chart._lc.isHidden():
+                continue
+
             now = time.time()
             period = now - last
+
             # if period <= 1/30:
-            if period <= 1/_clear_throttle_rate - 0.001:
+            if period <= 1/_clear_throttle_rate:
                 # faster then display refresh rate
                 # print(f'quote too fast: {1/period}')
                 continue
@@ -1479,7 +1498,7 @@ async def check_for_new_bars(feed, ohlcv, linked_charts):
 
 async def chart_symbol(
     chart_app: ChartSpace,
-    brokername: str,
+    provider: str,
     sym: str,
     loglevel: str,
 ) -> None:
@@ -1489,11 +1508,14 @@ async def chart_symbol(
     can be viewed and switched between extremely fast.
 
     """
+    sbar = chart_app.window.status_bar
+    loading_sym_done = sbar.open_status(f'loading {sym}.{provider}..')
+
     # historical data fetch
-    brokermod = brokers.get_brokermod(brokername)
+    brokermod = brokers.get_brokermod(provider)
 
     async with data.open_feed(
-        brokername,
+        provider,
         [sym],
         loglevel=loglevel,
     ) as feed:
@@ -1526,6 +1548,8 @@ async def chart_symbol(
                     add_label=False,
                 )
 
+        loading_sym_done()
+
         # size view to data once at outset
         chart._set_yrange()
 
@@ -1604,7 +1628,7 @@ async def chart_symbol(
             #     linked_charts,
             # )
 
-            await start_order_mode(chart, symbol, brokername)
+            await start_order_mode(chart, symbol, provider)
 
 
 async def load_providers(
@@ -1621,7 +1645,7 @@ async def load_providers(
         # search engines.
         for broker in brokernames:
 
-            log.info(f'Loading brokerd for {broker}')
+            log.info(f'loading brokerd for {broker}..')
             # spin up broker daemons for each provider
             portal = await stack.enter_async_context(
                 maybe_spawn_brokerd(
@@ -1645,7 +1669,7 @@ async def load_providers(
 
 async def _async_main(
     # implicit required argument provided by ``qtractor_run()``
-    widgets: Dict[str, Any],
+    main_widget: ChartSpace,
 
     sym: str,
     brokernames: str,
@@ -1659,10 +1683,10 @@ async def _async_main(
 
     """
 
-    chart_app = widgets['main']
+    chart_app = main_widget
 
     # attempt to configure DPI aware font size
-    screen = current_screen()
+    screen = chart_app.window.current_screen()
 
     # configure graphics update throttling based on display refresh rate
     global _clear_throttle_rate
@@ -1672,8 +1696,11 @@ async def _async_main(
     )
     log.info(f'Set graphics update rate to {_clear_throttle_rate} Hz')
 
-    # configure global DPI aware font size
+    # TODO: do styling / themeing setup
-    _font.configure_to_dpi(screen)
+    # _style.style_ze_sheets(chart_app)
+
+    sbar = chart_app.window.status_bar
+    starting_done = sbar.open_status('starting ze chartz...')
 
     async with trio.open_nursery() as root_n:
 
@@ -1702,8 +1729,6 @@ async def _async_main(
         # this internally starts a ``chart_symbol()`` task above
         chart_app.load_symbol(provider, symbol, loglevel)
 
-        root_n.start_soon(load_providers, brokernames, loglevel)
-
         # spin up a search engine for the local cached symbol set
         async with _search.register_symbol_search(
 
@@ -1712,8 +1737,14 @@ async def _async_main(
                 _search.search_simple_dict,
                 source=chart_app._chart_cache,
             ),
+            # cache is super fast so debounce on super short period
+            pause_period=0.01,
 
         ):
+            # load other providers into search **after**
+            # the chart's select cache
+            root_n.start_soon(load_providers, brokernames, loglevel)
+
             # start handling search bar kb inputs
             async with open_key_stream(
                 search.bar,
@@ -1727,6 +1758,7 @@ async def _async_main(
                     key_stream,
                 )
 
+                starting_done()
                 await trio.sleep_forever()
 
 

piker/ui/_exec.py

@@ -21,10 +21,7 @@ Run ``trio`` in guest mode on top of the Qt event loop.
 All global Qt runtime settings are mostly defined here.
 """
 from typing import Tuple, Callable, Dict, Any
-import os
 import platform
-import signal
-import time
 import traceback
 
 # Qt specific
@@ -32,20 +29,22 @@ import PyQt5  # noqa
 import pyqtgraph as pg
 from pyqtgraph import QtGui
 from PyQt5 import QtCore
+# from PyQt5.QtGui import QLabel, QStatusBar
 from PyQt5.QtCore import (
     pyqtRemoveInputHook,
     Qt,
     QCoreApplication,
 )
 import qdarkstyle
+from qdarkstyle import DarkPalette
 # import qdarkgraystyle
 import trio
-import tractor
 from outcome import Error
 
 from .._daemon import maybe_open_pikerd, _tractor_kwargs
 from ..log import get_logger
 from ._pg_overrides import _do_overrides
+from . import _style
 
 log = get_logger(__name__)
 
@@ -59,37 +58,6 @@ pg.enableExperimental = True
 _do_overrides()
 
 
-# singleton app per actor
-_qt_app: QtGui.QApplication = None
-_qt_win: QtGui.QMainWindow = None
-
-
-def current_screen() -> QtGui.QScreen:
-    """Get a frickin screen (if we can, gawd).
-
-    """
-    global _qt_win, _qt_app
-
-    start = time.time()
-
-    tries = 3
-    for _ in range(3):
-        screen = _qt_app.screenAt(_qt_win.pos())
-        print(f'trying to get screen....')
-        if screen is None:
-            time.sleep(0.5)
-            continue
-
-        break
-    else:
-        if screen is None:
-            # try for the first one we can find
-            screen = _qt_app.screens()[0]
-
-    assert screen, "Wow Qt is dumb as shit and has no screen..."
-    return screen
-
-
 # XXX: pretty sure none of this shit works on linux as per:
 # https://bugreports.qt.io/browse/QTBUG-53022
 # it seems to work on windows.. no idea wtf is up.
@@ -104,33 +72,12 @@ if platform.system() == "Windows":
         QCoreApplication.setAttribute(Qt.AA_UseHighDpiPixmaps, True)
 
 
-class MainWindow(QtGui.QMainWindow):
-
-    size = (800, 500)
-    title = 'piker chart (ur symbol is loading bby)'
-
-    def __init__(self, parent=None):
-        super().__init__(parent)
-        self.setMinimumSize(*self.size)
-        self.setWindowTitle(self.title)
-
-    def closeEvent(
-        self,
-        event: QtGui.QCloseEvent,
-    ) -> None:
-        """Cancel the root actor asap.
-
-        """
-        # raising KBI seems to get intercepted by by Qt so just use the system.
-        os.kill(os.getpid(), signal.SIGINT)
-
-
 def run_qtractor(
     func: Callable,
     args: Tuple,
     main_widget: QtGui.QWidget,
     tractor_kwargs: Dict[str, Any] = {},
-    window_type: QtGui.QMainWindow = MainWindow,
+    window_type: QtGui.QMainWindow = None,
 ) -> None:
     # avoids annoying message when entering debugger from qt loop
     pyqtRemoveInputHook()
@@ -148,10 +95,6 @@ def run_qtractor(
     # XXX: lmfao, this is how you disable text edit cursor blinking..smh
     app.setCursorFlashTime(0)
 
-    # set global app singleton
-    global _qt_app
-    _qt_app = app
-
     # This code is from Nathaniel, and I quote:
     # "This is substantially faster than using a signal... for some
     # reason Qt signal dispatch is really slow (and relies on events
@@ -188,19 +131,33 @@ def run_qtractor(
         app.quit()
 
     # load dark theme
-    app.setStyleSheet(qdarkstyle.load_stylesheet(qt_api='pyqt5'))
+    stylesheet = qdarkstyle.load_stylesheet(
+        qt_api='pyqt5',
+        palette=DarkPalette,
+    )
+    app.setStyleSheet(stylesheet)
 
     # make window and exec
+    from . import _window
+
+    if window_type is None:
+        window_type = _window.MainWindow
+
     window = window_type()
+
+    # set global app's main window singleton
+    _window._qt_win = window
+
+    # configure global DPI aware font sizes now that a screen
+    # should be active from which we can read a DPI.
+    _style._config_fonts_to_screen()
+
+    # hook into app focus change events
+    app.focusChanged.connect(window.on_focus_change)
+
     instance = main_widget()
     instance.window = window
 
-    widgets = {
-        'window': window,
-        'main': instance,
-    }
-
-
     # override tractor's defaults
     tractor_kwargs.update(_tractor_kwargs)
 
@@ -210,7 +167,7 @@ def run_qtractor(
         async with maybe_open_pikerd(
             **tractor_kwargs,
         ):
-            await func(*((widgets,) + args))
+            await func(*((instance,) + args))
 
     # guest mode entry
     trio.lowlevel.start_guest_run(
@@ -223,11 +180,6 @@ def run_qtractor(
     window.main_widget = main_widget
     window.setCentralWidget(instance)
 
-    # store global ref
-    # set global app singleton
-    global _qt_win
-    _qt_win = window
-
     # actually render to screen
     window.show()
     app.exec_()

piker/ui/_graphics/_cursor.py

@@ -31,6 +31,7 @@ from .._style import (
     _xaxis_at,
     hcolor,
     _font,
+    _font_small,
 )
 from .._axes import YAxisLabel, XAxisLabel
 from ...log import get_logger
@@ -109,7 +110,7 @@ class LineDot(pg.CurvePoint):
         return False
 
 
-# TODO: change this into our own ``Label``
+# TODO: change this into our own ``_label.Label``
 class ContentsLabel(pg.LabelItem):
     """Label anchored to a ``ViewBox`` typically for displaying
     datum-wise points from the "viewed" contents.
@@ -138,22 +139,14 @@ class ContentsLabel(pg.LabelItem):
         justify_text: str = 'left',
         font_size: Optional[int] = None,
     ) -> None:
-        font_size = font_size or _font.font.pixelSize()
+
+        font_size = font_size or _font_small.px_size
 
         super().__init__(
             justify=justify_text,
             size=f'{str(font_size)}px'
         )
 
-        if _font._physical_dpi >= 97:
-            # ad-hoc scale it based on boundingRect
-            # TODO: need proper fix for this?
-            typical_br = _font._qfm.boundingRect('Qyp')
-            anchor_font_size = math.ceil(typical_br.height() * 1.25)
-
-        else:
-            anchor_font_size = font_size
-
         # anchor to viewbox
         self.setParentItem(chart._vb)
         chart.scene().addItem(self)
@@ -165,7 +158,7 @@ class ContentsLabel(pg.LabelItem):
 
         ydim = margins[1]
         if inspect.isfunction(margins[1]):
-            margins = margins[0], ydim(anchor_font_size)
+            margins = margins[0], ydim(font_size)
 
         self.anchor(itemPos=index, parentPos=index, offset=margins)
 

piker/ui/_interaction.py

@@ -467,6 +467,9 @@ class ChartView(ViewBox):
         - zoom on right-click-n-drag to cursor position
 
     """
+
+    mode_name: str = 'mode: view'
+
     def __init__(
         self,
         parent: pg.PlotItem = None,

piker/ui/_search.py

@@ -96,6 +96,8 @@ class SimpleDelegate(QStyledItemDelegate):
 
 class CompleterView(QTreeView):
 
+    mode_name: str = 'mode: search-nav'
+
     # XXX: relevant docs links:
     # - simple widget version of this:
     #   https://doc.qt.io/qt-5/qtreewidget.html#details
@@ -153,13 +155,14 @@ class CompleterView(QTreeView):
         self._font_size: int = 0  # pixels
 
     def on_pressed(self, idx: QModelIndex) -> None:
+        '''Mouse pressed on view handler.
 
+        '''
         search = self.parent()
         search.chart_current_item(clear_to_cache=False)
         search.focus()
 
     def set_font_size(self, size: int = 18):
-        # dpi_px_size = _font.px_size
         # print(size)
         if size < 0:
             size = 16
@@ -424,6 +427,8 @@ class CompleterView(QTreeView):
 
 class SearchBar(QtWidgets.QLineEdit):
 
+    mode_name: str = 'mode: search'
+
     def __init__(
 
         self,
@@ -487,6 +492,8 @@ class SearchWidget(QtGui.QWidget):
     Includes helper methods for item management in the sub-widgets.
 
     '''
+    mode_name: str = 'mode: search'
+
     def __init__(
         self,
         chart_space: 'ChartSpace',  # type: ignore # noqa
@@ -499,7 +506,7 @@ class SearchWidget(QtGui.QWidget):
         # size it as we specify
         self.setSizePolicy(
             QtWidgets.QSizePolicy.Fixed,
-            QtWidgets.QSizePolicy.Expanding,
+            QtWidgets.QSizePolicy.Fixed,
         )
 
         self.chart_app = chart_space
@@ -618,13 +625,15 @@ class SearchWidget(QtGui.QWidget):
         # making?)
         fqsn = '.'.join([symbol, provider]).lower()
 
-        # 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)
-
         if clear_to_cache:
+
             self.bar.clear()
+
+            # 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)
+
             self.view.set_section_entries(
                 'cache',
                 values=list(reversed(chart._chart_cache)),
@@ -692,8 +701,10 @@ async def fill_results(
     recv_chan: trio.abc.ReceiveChannel,
 
     # kb debouncing pauses (bracket defaults)
-    min_pause_time: float = 0.1,
+    min_pause_time: float = 0.01,  # absolute min typing throttle
-    max_pause_time: float = 6/16,
+
+    # max pause required before slow relay
+    max_pause_time: float = 6/16 + 0.001,
 
 ) -> None:
     """Task to search through providers and fill in possible
@@ -742,11 +753,6 @@ async def fill_results(
                 _search_active = trio.Event()
                 break
 
-            if repeats > 2 and period >= max_pause_time:
-                _search_active = trio.Event()
-                repeats = 0
-                break
-
             if text == last_text:
                 repeats += 1
 
@@ -754,9 +760,8 @@ async def fill_results(
                 # print('search currently disabled')
                 break
 
-            log.debug(f'Search req for {text}')
-
             already_has_results = has_results[text]
+            log.debug(f'Search req for {text}')
 
             # issue multi-provider fan-out search request and place
             # "searching.." statuses on outstanding results providers
@@ -765,16 +770,22 @@ async def fill_results(
                 for provider, (search, pause) in (
                     _searcher_cache.copy().items()
                 ):
-
+                    # XXX: only conduct search on this backend if it's
-                    if provider != 'cache':
+                    # registered for the corresponding pause period AND
-                        view.clear_section(
+                    # it hasn't already been searched with the current
-                            provider, status_field='-> searchin..')
+                    # input pattern (in which case just look up the old
-
+                    # results).
-                    # only conduct search on this backend if it's
-                    # registered for the corresponding pause period.
                     if (period >= pause) and (
                         provider not in already_has_results
                     ):
+
+                        # TODO: it may make more sense TO NOT search the
+                        # cache in a bg task since we know it's fully
+                        # cpu-bound.
+                        if provider != 'cache':
+                            view.clear_section(
+                                provider, status_field='-> searchin..')
+
                         await n.start(
                             pack_matches,
                             view,
@@ -786,6 +797,14 @@ async def fill_results(
                         )
                     else:  # already has results for this input text
                         results = matches[(provider, text)]
+
+                        # TODO really for the cache we need an
+                        # invalidation signal so that we only re-search
+                        # the cache once it's been mutated by the chart
+                        # switcher.. right now we're just always
+                        # re-searching it's ``dict`` since it's easier
+                        # but it also causes it to be slower then cached
+                        # results from other providers on occasion.
                         if results and provider != 'cache':
                             view.set_section_entries(
                                 section=provider,
@@ -794,6 +813,11 @@ async def fill_results(
                         else:
                             view.clear_section(provider)
 
+            if repeats > 2 and period > max_pause_time:
+                _search_active = trio.Event()
+                repeats = 0
+                break
+
             bar.show()
 
 
@@ -952,7 +976,7 @@ async def register_symbol_search(
 
     global _searcher_cache
 
-    pause_period = pause_period or 0.125
+    pause_period = pause_period or 0.1
 
     # deliver search func to consumer
     try:

piker/ui/_style.py

@@ -22,18 +22,19 @@ import math
 
 import pyqtgraph as pg
 from PyQt5 import QtCore, QtGui
-from qdarkstyle.palette import DarkPalette
+from qdarkstyle import DarkPalette
 
 from ..log import get_logger
-from ._exec import current_screen
 
 log = get_logger(__name__)
 
+_magic_inches = 0.0666 * (1 + 6/16)
+
 # chart-wide fonts specified in inches
 _font_sizes: Dict[str, Dict[str, float]] = {
     'hi': {
-        'default':  0.0616,
+        'default':  _magic_inches,
-        'small':  0.055,
+        'small': 0.9 * _magic_inches,
     },
     'lo': {
         'default':  6.5 / 64,
@@ -43,6 +44,7 @@ _font_sizes: Dict[str, Dict[str, float]] = {
 
 
 class DpiAwareFont:
+
     def __init__(
         self,
         # TODO: move to config
@@ -52,10 +54,10 @@ class DpiAwareFont:
     ) -> None:
         self.name = name
         self._qfont = QtGui.QFont(name)
-        # self._iwl = size_in_inches or _default_font_inches_we_like
         self._font_size: str = font_size
         self._qfm = QtGui.QFontMetrics(self._qfont)
         self._physical_dpi = None
+        self._font_inches: float = None
         self._screen = None
 
     def _set_qfont_px_size(self, px_size: int) -> None:
@@ -64,13 +66,15 @@ class DpiAwareFont:
 
     @property
     def screen(self) -> QtGui.QScreen:
+        from ._window import main_window
+
         if self._screen is not None:
             try:
                 self._screen.refreshRate()
             except RuntimeError:
-                self._screen = current_screen()
+                self._screen = main_window().current_screen()
         else:
-            self._screen = current_screen()
+            self._screen = main_window().current_screen()
 
         return self._screen
 
@@ -95,22 +99,34 @@ class DpiAwareFont:
         # take the max since scaling can make things ugly in some cases
         pdpi = screen.physicalDotsPerInch()
         ldpi = screen.logicalDotsPerInch()
-        dpi = max(pdpi, ldpi)
+        mx_dpi = max(pdpi, ldpi)
+        mn_dpi = min(pdpi, ldpi)
+        scale = round(ldpi/pdpi)
 
-        # for low dpi scale everything down
+        if mx_dpi <= 97:  # for low dpi use larger font sizes
-        if dpi <= 97:
             inches = _font_sizes['lo'][self._font_size]
-        else:
+
+        else:  # hidpi use smaller font sizes
             inches = _font_sizes['hi'][self._font_size]
 
+        dpi = mn_dpi
+
+        # dpi is likely somewhat scaled down so use slightly larger font size
+        if scale > 1 and self._font_size:
+            # TODO: this denominator should probably be determined from
+            # relative aspect rations or something?
+            inches = inches * (1 / scale) * (1 + 6/16)
+            dpi = mx_dpi
+
+        self._font_inches = inches
+
         font_size = math.floor(inches * dpi)
         log.info(
-            f"\nscreen:{screen.name()} with DPI: {dpi}"
+            f"\nscreen:{screen.name()} with pDPI: {pdpi}, lDPI: {ldpi}"
-            f"\nbest font size is {font_size}\n"
+            f"\nOur best guess font size is {font_size}\n"
         )
-
+        # apply the size
         self._set_qfont_px_size(font_size)
-        self._physical_dpi = dpi
 
     def boundingRect(self, value: str) -> QtCore.QRectF:
 
@@ -130,12 +146,20 @@ class DpiAwareFont:
 
 # use inches size to be cross-resolution compatible?
 _font = DpiAwareFont()
+_font_small = DpiAwareFont(font_size='small')
+
+
+def _config_fonts_to_screen() -> None:
+    'configure global DPI aware font sizes'
+
+    global _font, _font_small
+    _font.configure_to_dpi()
+    _font_small.configure_to_dpi()
+
 
 # TODO: re-compute font size when main widget switches screens?
 # https://forum.qt.io/topic/54136/how-do-i-get-the-qscreen-my-widget-is-on-qapplication-desktop-screen-returns-a-qwidget-and-qobject_cast-qscreen-returns-null/3
 
-# _i3_rgba = QtGui.QColor.fromRgbF(*[0.14]*3 + [1])
-
 # splitter widget config
 _xaxis_at = 'bottom'
 
@@ -175,6 +199,7 @@ def hcolor(name: str) -> str:
         'gray': '#808080',  # like the kick
         'grayer': '#4c4c4c',
         'grayest': '#3f3f3f',
+        'i3': '#494D4F',
         'jet': '#343434',
         'cadet': '#91A3B0',
         'marengo': '#91A3B0',
@@ -185,9 +210,13 @@ def hcolor(name: str) -> str:
         'bracket': '#666666',  # like the logo
         'original': '#a9a9a9',
 
-        # palette
+        # from ``qdarkstyle`` palette
-        'default': DarkPalette.COLOR_BACKGROUND_NORMAL,
+        'default_darkest': DarkPalette.COLOR_BACKGROUND_1,
-        'default_light': DarkPalette.COLOR_BACKGROUND_LIGHT,
+        'default_dark': DarkPalette.COLOR_BACKGROUND_2,
+        'default': DarkPalette.COLOR_BACKGROUND_3,
+        'default_light': DarkPalette.COLOR_BACKGROUND_4,
+        'default_lightest': DarkPalette.COLOR_BACKGROUND_5,
+        'default_spotlight': DarkPalette.COLOR_BACKGROUND_6,
 
         'white': '#ffffff',  # for tinas and sunbathers
 

piker/ui/_window.py

@@ -0,0 +1,180 @@
+# 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/>.
+
+"""
+Qt main window singletons and stuff.
+
+"""
+import os
+import signal
+import time
+from typing import Callable
+
+from pyqtgraph import QtGui
+from PyQt5 import QtCore
+from PyQt5.QtGui import QLabel, QStatusBar
+
+from ..log import get_logger
+from ._style import _font_small, hcolor
+
+
+log = get_logger(__name__)
+
+
+class MultiStatus:
+
+    bar: QStatusBar
+    statuses: list[str]
+
+    def __init__(self, bar, statuses) -> None:
+        self.bar = bar
+        self.statuses = statuses
+
+    def open_status(
+        self,
+        msg: str,
+    ) -> Callable[..., None]:
+        '''Add a status to the status bar and return a close callback which
+        when called will remove the status ``msg``.
+
+        '''
+        self.statuses.append(msg)
+
+        def remove_msg() -> None:
+            self.statuses.remove(msg)
+            self.render()
+
+        self.render()
+        return remove_msg
+
+    def render(self) -> None:
+        if self.statuses:
+            self.bar.showMessage(f'{" ".join(self.statuses)}')
+        else:
+            self.bar.clearMessage()
+
+
+class MainWindow(QtGui.QMainWindow):
+
+    size = (800, 500)
+    title = 'piker chart (ur symbol is loading bby)'
+
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.setMinimumSize(*self.size)
+        self.setWindowTitle(self.title)
+
+        self._status_bar: QStatusBar = None
+        self._status_label: QLabel = None
+
+    @property
+    def mode_label(self) -> QtGui.QLabel:
+
+        # init mode label
+        if not self._status_label:
+
+            self._status_label = label = QtGui.QLabel()
+            label.setStyleSheet(
+                f"QLabel {{ color : {hcolor('gunmetal')}; }}"
+            )
+            label.setTextFormat(3)  # markdown
+            label.setFont(_font_small.font)
+            label.setMargin(2)
+            label.setAlignment(
+                QtCore.Qt.AlignVCenter
+                | QtCore.Qt.AlignRight
+            )
+            self.statusBar().addPermanentWidget(label)
+            label.show()
+
+        return self._status_label
+
+    def closeEvent(
+        self,
+        event: QtGui.QCloseEvent,
+    ) -> None:
+        """Cancel the root actor asap.
+
+        """
+        # raising KBI seems to get intercepted by by Qt so just use the system.
+        os.kill(os.getpid(), signal.SIGINT)
+
+    @property
+    def status_bar(self) -> QStatusBar:
+
+        # style and cached the status bar on first access
+        if not self._status_bar:
+
+            sb = self.statusBar()
+            sb.setStyleSheet((
+                f"color : {hcolor('gunmetal')};"
+                f"background : {hcolor('default_dark')};"
+                f"font-size : {_font_small.px_size}px;"
+                "padding : 0px;"
+                # "min-height : 19px;"
+                # "qproperty-alignment: AlignVCenter;"
+            ))
+            self.setStatusBar(sb)
+            self._status_bar = MultiStatus(sb, [])
+
+        return self._status_bar
+
+    def on_focus_change(
+        self,
+        old: QtGui.QWidget,
+        new: QtGui.QWidget,
+    ) -> None:
+
+        log.debug(f'widget focus changed from {old} -> {new}')
+
+        if new is not None:
+            # cursor left window?
+            name = getattr(new, 'mode_name', '')
+            self.mode_label.setText(name)
+
+    def current_screen(self) -> QtGui.QScreen:
+        """Get a frickin screen (if we can, gawd).
+
+        """
+        app = QtGui.QApplication.instance()
+
+        for _ in range(3):
+            screen = app.screenAt(self.pos())
+            print('trying to access QScreen...')
+            if screen is None:
+                time.sleep(0.5)
+                continue
+
+            break
+        else:
+            if screen is None:
+                # try for the first one we can find
+                screen = app.screens()[0]
+
+        assert screen, "Wow Qt is dumb as shit and has no screen..."
+        return screen
+
+
+# singleton app per actor
+_qt_win: QtGui.QMainWindow = None
+
+
+def main_window() -> MainWindow:
+    'Return the actor-global Qt window.'
+
+    global _qt_win
+    assert _qt_win
+    return _qt_win

piker/ui/order_mode.py

@@ -309,7 +309,15 @@ async def start_order_mode(
     chart: 'ChartPlotWidget',  # noqa
     symbol: Symbol,
     brokername: str,
+
 ) -> None:
+    '''Activate chart-trader order mode loop:
+      - connect to emsd
+      - load existing positions
+      - begin order handling loop
+
+    '''
+    done = chart.window().status_bar.open_status('Starting order mode...')
 
     # spawn EMS actor-service
     async with (
@@ -335,6 +343,7 @@ async def start_order_mode(
                 return ohlc['index'][-1]
 
         # Begin order-response streaming
+        done()
 
         # this is where we receive **back** messages
         # about executions **from** the EMS actor

setup.py

@@ -70,17 +70,12 @@ setup(
         # UI
         'PyQt5',
         'pyqtgraph',
-        'qdarkstyle==2.8.1',
+        'qdarkstyle >= 3.0.2',
-        #'kivy',  see requirement.txt; using a custom branch atm
-
-        # tsdbs
-        'pymarketstore',
-
-        #'kivy',  see requirement.txt; using a custom branch atm
-
         # fuzzy search
         'fuzzywuzzy[speedup]',
 
+        # tsdbs
+        'pymarketstore',
     ],
     tests_require=['pytest'],
     python_requires=">=3.9",  # literally for ``datetime.datetime.fromisoformat``...