🟢 .gitignore

🛠️ piker/ui/_axes.py -> Enhance axis font and size handling
🛠️ piker/ui/_window.py -> Improve zoom key detection and event handling
🛠️ piker/ui/_window.py -> Update axes fonts and layout after zoom events

.gitignore

@@ -103,3 +103,4 @@ ENV/
 # mypy
 .mypy_cache/
 .vscode/settings.json
+**/.DS_Store

config/conf.toml

@@ -4,9 +4,11 @@ tsdb.host = 'localhost'
 tsdb.grpc_port = 5995
 
 [ui]
-# set custom font + size which will scale entire UI
+# set custom font + size which will scale entire UI~
 # font_size = 16
+# font_size = 32
 # font_name = 'Monospaced'
 
 # colorscheme = 'default'  # UNUSED
-# graphics.update_throttle = 60  # Hz  # TODO
+# graphics.update_throttle = 120  # Hz  #PENDING TODO
+

piker.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+# macOS wrapper for piker to handle missing XDG_RUNTIME_DIR
+
+# Set up runtime directory for macOS if not already set
+if [ -z "$XDG_RUNTIME_DIR" ]; then
+    # Use macOS standard temp directory with user-specific subdirectory
+    export XDG_RUNTIME_DIR="/tmp/piker-runtime-$(id -u)"
+
+    # Create the directory if it doesn't exist
+    if [ ! -d "$XDG_RUNTIME_DIR" ]; then
+        mkdir -p "$XDG_RUNTIME_DIR"
+        # Set proper permissions (only user can access)
+        chmod 700 "$XDG_RUNTIME_DIR"
+    fi
+
+    echo "Set XDG_RUNTIME_DIR to: $XDG_RUNTIME_DIR"
+fi
+
+# Run piker with all passed arguments
+exec uv run piker "$@"

piker/cli/__init__.py

@@ -183,8 +183,8 @@ def pikerd(
                 registry_addrs=regaddrs,
                 loglevel=loglevel,
                 debug_mode=pdb,
-                enable_transports=['uds'],
+                # enable_transports=['uds'],
-                # enable_transports=['tcp'],
+                enable_transports=['tcp'],
             ) as service_mngr,
         ):
             assert service_mngr

piker/data/_symcache.py

@@ -92,6 +92,15 @@ class SymbologyCache(Struct):
 
     def write_config(self) -> None:
 
+        def clean_dict_for_toml(d):
+            '''Remove None values from dict recursively for TOML serialization'''
+            if isinstance(d, dict):
+                return {k: clean_dict_for_toml(v) for k, v in d.items() if v is not None}
+            elif isinstance(d, list):
+                return [clean_dict_for_toml(item) for item in d if item is not None]
+            else:
+                return d
+
         # put the backend's pair-struct type ref at the top
         # of file if possible.
         cachedict: dict[str, Any] = {
@@ -112,7 +121,9 @@ class SymbologyCache(Struct):
 
             dct = cachedict[key] = {}
             for key, struct in table.items():
-                dct[key] = struct.to_dict(include_non_members=False)
+                raw_dict = struct.to_dict(include_non_members=False)
+                # Clean None values for TOML compatibility
+                dct[key] = clean_dict_for_toml(raw_dict)
 
         try:
             with self.fp.open(mode='wb') as fp:

piker/fsp/_api.py

@@ -200,9 +200,13 @@ def maybe_mk_fsp_shm(
     )
 
     # (attempt to) uniquely key the fsp shm buffers
+    # Use hash for macOS compatibility (31 char limit)
+    import hashlib
     actor_name, uuid = tractor.current_actor().uid
-    uuid_snip: str = uuid[:16]
+    # Create short hash of sym and target name
-    key: str = f'piker.{actor_name}[{uuid_snip}].{sym}.{target.name}'
+    content = f'{sym}.{target.name}'
+    content_hash = hashlib.md5(content.encode()).hexdigest()[:8]
+    key: str = f'{uuid[:8]}_{content_hash}.fsp'
 
     shm, opened = maybe_open_shm_array(
         key,

piker/tsp/__init__.py

@@ -1257,13 +1257,17 @@ async def manage_history(
     service: str = name.rstrip(f'.{mod.name}')
     fqme: str = mkt.get_fqme(delim_char='')
 
+    # Create a short hash of the fqme for macOS compatibility
+    import hashlib
+    fqme_hash = hashlib.md5(fqme.encode()).hexdigest()[:8]
+
     # (maybe) allocate shm array for this broker/symbol which will
     # be used for fast near-term history capture and processing.
     hist_shm, opened = maybe_open_shm_array(
         size=_default_hist_size,
         append_start_index=_hist_buffer_start,
 
-        key=f'piker.{service}[{uuid[:16]}].{fqme}.hist',
+        key=f'{uuid[:8]}_{fqme_hash}.h',
 
         # use any broker defined ohlc dtype:
         dtype=getattr(mod, '_ohlc_dtype', def_iohlcv_fields),
@@ -1282,7 +1286,7 @@ async def manage_history(
     rt_shm, opened = maybe_open_shm_array(
         size=_default_rt_size,
         append_start_index=_rt_buffer_start,
-        key=f'piker.{service}[{uuid[:16]}].{fqme}.rt',
+        key=f'{uuid[:8]}_{fqme_hash}.r',
 
         # use any broker defined ohlc dtype:
         dtype=getattr(mod, '_ohlc_dtype', def_iohlcv_fields),

piker/ui/_axes.py

@@ -75,6 +75,9 @@ class Axis(pg.AxisItem):
         self.pi = plotitem
         self._dpi_font = _font
 
+        # store for later recalculation on zoom
+        self._typical_max_str = typical_max_str
+
         self.setTickFont(_font.font)
         font_size = self._dpi_font.font.pixelSize()
 
@@ -156,6 +159,41 @@ class Axis(pg.AxisItem):
     def size_to_values(self) -> None:
         pass
 
+    def update_fonts(self, font: DpiAwareFont) -> None:
+        '''Update font and recalculate axis sizing after zoom change.'''
+        # IMPORTANT: tell Qt we're about to change geometry
+        self.prepareGeometryChange()
+
+        self._dpi_font = font
+        self.setTickFont(font.font)
+        font_size = font.font.pixelSize()
+
+        # recalculate text offset based on new font size
+        text_offset = None
+        if self.orientation in ('bottom',):
+            text_offset = floor(0.25 * font_size)
+        elif self.orientation in ('left', 'right'):
+            text_offset = floor(font_size / 2)
+
+        if text_offset:
+            self.setStyle(tickTextOffset=text_offset)
+
+        # recalculate bounding rect with new font
+        # Note: typical_max_str should be stored from init
+        if not hasattr(self, '_typical_max_str'):
+            self._typical_max_str = '100 000.000  '  # fallback default
+        self.typical_br = font._qfm.boundingRect(self._typical_max_str)
+
+        # Update PyQtGraph's internal text size tracking
+        # This is critical - PyQtGraph uses these internally for auto-expand
+        if self.orientation in ['left', 'right']:
+            self.textWidth = self.typical_br.width()
+        else:
+            self.textHeight = self.typical_br.height()
+
+        # resize axis to fit new font - this triggers PyQtGraph's auto-expand
+        self.size_to_values()
+
     def txt_offsets(self) -> tuple[int, int]:
         return tuple(self.style['tickTextOffset'])
 
@@ -256,7 +294,14 @@ class PriceAxis(Axis):
         self._min_tick = size
 
     def size_to_values(self) -> None:
-        self.setWidth(self.typical_br.width())
+        # Call PyQtGraph's internal width update mechanism
+        # This respects autoExpandTextSpace and updates min/max constraints
+        self._updateWidth()
+        # tell Qt our preferred size changed so layout recalculates
+        self.updateGeometry()
+        # force parent plot item to recalculate its layout
+        if self.pi and hasattr(self.pi, 'updateGeometry'):
+            self.pi.updateGeometry()
 
     # XXX: drop for now since it just eats up h space
 
@@ -300,7 +345,14 @@ class DynamicDateAxis(Axis):
     }
 
     def size_to_values(self) -> None:
-        self.setHeight(self.typical_br.height() + 1)
+        # Call PyQtGraph's internal height update mechanism
+        # This respects autoExpandTextSpace and updates min/max constraints
+        self._updateHeight()
+        # tell Qt our preferred size changed so layout recalculates
+        self.updateGeometry()
+        # force parent plot item to recalculate its layout
+        if self.pi and hasattr(self.pi, 'updateGeometry'):
+            self.pi.updateGeometry()
 
     def _indexes_to_timestrs(
         self,

piker/ui/_display.py

@@ -212,7 +212,9 @@ async def increment_history_view(
     hist_chart: ChartPlotWidget = ds.hist_chart
     hist_viz: Viz = ds.hist_viz
     # viz: Viz = ds.viz
-    assert 'hist' in hist_viz.shm.token['shm_name']
+    # NOTE: Changed for macOS compatibility with shortened shm names
+    # assert 'hist' in hist_viz.shm.token['shm_name']
+    assert hist_viz.shm.token['shm_name'].endswith('.h')
     # name: str = hist_viz.name
 
     # TODO: seems this is more reliable at keeping the slow

piker/ui/_exec.py

@@ -199,6 +199,9 @@ def run_qtractor(
     if is_windows:
         window.configure_to_desktop()
 
+    # install global keyboard shortcuts for UI zoom
+    window.install_global_zoom_filter()
+
     # actually render to screen
     window.show()
     app.exec_()

piker/ui/_forms.py

@@ -124,6 +124,13 @@ class Edit(QLineEdit):
         self.sizeHint()
         self.update()
 
+    def update_fonts(self, font: DpiAwareFont) -> None:
+        '''Update font and recalculate widget size.'''
+        self.dpi_font = font
+        self.setFont(font.font)
+        # tell Qt our size hint changed so it recalculates layout
+        self.updateGeometry()
+
     def focus(self) -> None:
         self.selectAll()
         self.show()
@@ -241,6 +248,14 @@ class Selection(QComboBox):
         icon_size = round(h * 0.75)
         self.setIconSize(QSize(icon_size, icon_size))
 
+    def update_fonts(self, font: DpiAwareFont) -> None:
+        '''Update font and recalculate widget size.'''
+        self.setFont(font.font)
+        # recalculate heights with new font
+        self.resize()
+        # tell Qt our size hint changed so it recalculates layout
+        self.updateGeometry()
+
     def set_items(
         self,
         keys: list[str],
@@ -431,6 +446,39 @@ class FieldsForm(QWidget):
         self.fields[key] = select
         return select
 
+    def update_fonts(self) -> None:
+        '''Update font sizes after zoom change.'''
+        from ._style import _font, _font_small
+
+        # update stored font size
+        self._font_size = _font_small.px_size - 2
+
+        # update all labels
+        for name, label in self.labels.items():
+            if hasattr(label, 'update_font'):
+                label.update_font(_font.font, self._font_size - 1)
+
+        # update all fields (edits, selects)
+        for key, field in self.fields.items():
+            # first check for our custom update_fonts method (Edit, Selection)
+            if hasattr(field, 'update_fonts'):
+                field.update_fonts(_font)
+            # then handle stylesheet updates for those without custom methods
+            elif hasattr(field, 'setStyleSheet'):
+                # regenerate stylesheet with new font size
+                field.setStyleSheet(
+                    f"""QLineEdit {{
+                        color : {hcolor('gunmetal')};
+                        font-size : {self._font_size}px;
+                    }}
+                    """
+                )
+                field.setFont(_font.font)
+
+            # for Selection widgets that need style updates
+            if hasattr(field, 'set_style'):
+                field.set_style(color='gunmetal', font_size=self._font_size)
+
 
 async def handle_field_input(
 
@@ -633,6 +681,37 @@ class FillStatusBar(QProgressBar):
         self.setRange(0, int(slots))
         self.setValue(value)
 
+    def update_fonts(self, font_size: int) -> None:
+        '''Update font size after zoom change.'''
+        from ._style import _font_small
+
+        self.font_size = font_size
+        # regenerate stylesheet with new font size
+        self.setStyleSheet(
+            f"""
+            QProgressBar {{
+
+                text-align: center;
+
+                font-size : {self.font_size - 2}px;
+
+                background-color: {hcolor('papas_special')};
+                color : {hcolor('papas_special')};
+
+                border: {self.border_px}px solid {hcolor('default_light')};
+                border-radius: 2px;
+            }}
+            QProgressBar::chunk {{
+
+                background-color: {hcolor('default_spotlight')};
+                color: {hcolor('bracket')};
+
+                border-radius: 2px;
+            }}
+            """
+        )
+        self.setFont(_font_small.font)
+
 
 def mk_fill_status_bar(
 

piker/ui/_label.py

@@ -334,3 +334,19 @@ class FormatLabel(QLabel):
         out = self.fmt_str.format(**fields)
         self.setText(out)
         return out
+
+    def update_font(
+        self,
+        font: QtGui.QFont,
+        font_size: int,
+        font_color: str = 'default_lightest',
+    ) -> None:
+        '''Update font after zoom change.'''
+        self.setStyleSheet(
+            f"""QLabel {{
+                color : {hcolor(font_color)};
+                font-size : {font_size}px;
+            }}
+            """
+        )
+        self.setFont(font)

piker/ui/_position.py

@@ -178,6 +178,26 @@ class SettingsPane:
     # encompasing high level namespace
     order_mode: OrderMode | None = None  # typing: ignore # noqa
 
+    def update_fonts(self) -> None:
+        '''Update font sizes after zoom change.'''
+        from ._style import _font_small
+
+        # update form fields
+        if self.form and hasattr(self.form, 'update_fonts'):
+            self.form.update_fonts()
+
+        # update fill status bar
+        if self.fill_bar and hasattr(self.fill_bar, 'update_fonts'):
+            self.fill_bar.update_fonts(_font_small.px_size)
+
+        # update labels with new fonts
+        if self.step_label:
+            self.step_label.setFont(_font_small.font)
+        if self.pnl_label:
+            self.pnl_label.setFont(_font_small.font)
+        if self.limit_label:
+            self.limit_label.setFont(_font_small.font)
+
     def set_accounts(
         self,
         names: list[str],

piker/ui/_search.py

@@ -174,6 +174,12 @@ class CompleterView(QTreeView):
 
         self.setStyleSheet(f"font: {size}px")
 
+    def update_fonts(self) -> None:
+        '''Update font sizes after zoom change.'''
+        self.set_font_size(_font.px_size)
+        self.setIndentation(_font.px_size)
+        self.setFont(_font.font)
+
     def resize_to_results(
         self,
         w: float | None = 0,
@@ -630,6 +636,27 @@ class SearchWidget(QtWidgets.QWidget):
             | align_flag.AlignLeft,
         )
 
+    def update_fonts(self) -> None:
+        '''Update font sizes after zoom change.'''
+        # regenerate label stylesheet with new font size
+        self.label.setStyleSheet(
+            f"""QLabel {{
+                color : {hcolor('default_lightest')};
+                font-size : {_font.px_size - 2}px;
+            }}
+            """
+        )
+        self.label.setFont(_font.font)
+
+        # update search bar and view fonts
+        if hasattr(self.bar, 'update_fonts'):
+            self.bar.update_fonts(_font)
+        elif hasattr(self.bar, 'setFont'):
+            self.bar.setFont(_font.font)
+
+        if hasattr(self.view, 'update_fonts'):
+            self.view.update_fonts()
+
     def focus(self) -> None:
         self.show()
         self.bar.focus()

piker/ui/_style.py

@@ -80,7 +80,7 @@ class DpiAwareFont:
         self._screen = None
 
     def _set_qfont_px_size(self, px_size: int) -> None:
-        self._qfont.setPixelSize(px_size)
+        self._qfont.setPixelSize(int(px_size))
         self._qfm = QtGui.QFontMetrics(self._qfont)
 
     @property
@@ -109,7 +109,11 @@ class DpiAwareFont:
     def px_size(self) -> int:
         return self._qfont.pixelSize()
 
-    def configure_to_dpi(self, screen: QtGui.QScreen | None = None):
+    def configure_to_dpi(
+        self,
+        screen: QtGui.QScreen | None = None,
+        zoom_level: float = 1.0,
+    ):
         '''
         Set an appropriately sized font size depending on the screen DPI.
 
@@ -118,7 +122,7 @@ class DpiAwareFont:
 
         '''
         if self._font_size is not None:
-            self._set_qfont_px_size(self._font_size)
+            self._set_qfont_px_size(self._font_size * zoom_level)
             return
 
         # NOTE: if no font size set either in the [ui] section of the
@@ -184,9 +188,13 @@ class DpiAwareFont:
         self._font_inches = inches
         font_size = math.floor(inches * dpi)
 
+        # apply zoom level multiplier
+        font_size = int(font_size * zoom_level)
+
         log.debug(
             f"screen:{screen.name()}\n"
             f"pDPI: {pdpi}, lDPI: {ldpi}, scale: {scale}\n"
+            f"zoom_level: {zoom_level}\n"
             f"\nOur best guess font size is {font_size}\n"
         )
         # apply the size
@@ -213,12 +221,12 @@ _font = DpiAwareFont()
 _font_small = DpiAwareFont(_font_size_key='small')
 
 
-def _config_fonts_to_screen() -> None:
+def _config_fonts_to_screen(zoom_level: float = 1.0) -> None:
     'configure global DPI aware font sizes'
 
     global _font, _font_small
-    _font.configure_to_dpi()
+    _font.configure_to_dpi(zoom_level=zoom_level)
-    _font_small.configure_to_dpi()
+    _font_small.configure_to_dpi(zoom_level=zoom_level)
 
 
 # TODO: re-compute font size when main widget switches screens?

piker/ui/_window.py

@@ -18,6 +18,7 @@
 Qt main window singletons and stuff.
 
 """
+from __future__ import annotations
 import os
 import signal
 import time
@@ -37,6 +38,8 @@ from piker.ui.qt import (
     QStatusBar,
     QScreen,
     QCloseEvent,
+    QEvent,
+    QObject,
 )
 from ..log import get_logger
 from ._style import _font_small, hcolor
@@ -46,6 +49,68 @@ from ._chart import GodWidget
 log = get_logger(__name__)
 
 
+class GlobalZoomEventFilter(QObject):
+    '''
+    Application-level event filter for global UI zoom shortcuts.
+
+    This filter intercepts keyboard events BEFORE they reach widgets,
+    allowing us to implement global UI zoom shortcuts that take precedence
+    over widget-specific shortcuts.
+
+    Shortcuts:
+    - Ctrl+Shift+Plus/Equal: Zoom in
+    - Ctrl+Shift+Minus: Zoom out
+    - Ctrl+Shift+0: Reset zoom
+
+    '''
+    def __init__(self, main_window: MainWindow):
+        super().__init__()
+        self.main_window = main_window
+
+    def eventFilter(self, obj: QObject, event: QEvent) -> bool:
+        '''
+        Filter keyboard events for global zoom shortcuts.
+
+        Returns True to filter out (consume) the event, False to pass through.
+        '''
+        if event.type() == QEvent.Type.KeyPress:
+            key = event.key()
+            mods = event.modifiers()
+
+            # Mask out the KeypadModifier which Qt sometimes adds
+            mods = mods & ~Qt.KeyboardModifier.KeypadModifier
+
+            # Check if we have Ctrl+Shift (both required)
+            has_ctrl = bool(mods & Qt.KeyboardModifier.ControlModifier)
+            has_shift = bool(mods & Qt.KeyboardModifier.ShiftModifier)
+
+            # Only handle UI zoom if BOTH Ctrl and Shift are pressed
+            # For Plus key: user presses Cmd+Shift+Equal (which makes Plus)
+            # For Minus key: user presses Cmd+Shift+Minus
+            if has_ctrl and has_shift:
+                # Zoom in: Ctrl+Shift+Plus
+                # Note: Plus key usually comes as Key_Equal with Shift modifier
+                if key in (Qt.Key.Key_Plus, Qt.Key.Key_Equal):
+                    self.main_window.zoom_in()
+                    return True  # consume event
+
+                # Zoom out: Ctrl+Shift+Minus
+                elif key == Qt.Key.Key_Minus:
+                    self.main_window.zoom_out()
+                    return True  # consume event
+
+                # Reset zoom: Ctrl+Shift+0
+                elif key == Qt.Key.Key_0:
+                    self.main_window.reset_zoom()
+                    return True  # consume event
+
+            # Pass through if only Ctrl (no Shift) - this goes to chart zoom
+            # Pass through all other events too
+            return False
+
+        return False
+
+
 class MultiStatus:
 
     bar: QStatusBar
@@ -181,6 +246,24 @@ class MainWindow(QMainWindow):
         self._status_label: QLabel = None
         self._size: tuple[int, int] | None = None
 
+        # zoom level for UI scaling (1.0 = 100%, 1.5 = 150%, etc)
+        # Change this value to set the default startup zoom level
+        self._zoom_level: float = 4.0  # Start at 200% zoom
+        self._min_zoom: float = 0.5
+        self._max_zoom: float = 10.0
+        self._zoom_step: float = 1.0
+
+        # event filter for global zoom shortcuts
+        self._zoom_filter: GlobalZoomEventFilter | None = None
+
+    def install_global_zoom_filter(self) -> None:
+        '''Install application-level event filter for global UI zoom shortcuts.'''
+        if self._zoom_filter is None:
+            self._zoom_filter = GlobalZoomEventFilter(self)
+            app = QApplication.instance()
+            app.installEventFilter(self._zoom_filter)
+            log.info('Installed global zoom shortcuts: Ctrl+Shift+Plus/Minus/0')
+
     @property
     def mode_label(self) -> QLabel:
 
@@ -336,6 +419,161 @@ class MainWindow(QMainWindow):
         self.godwidget.on_win_resize(event)
         event.accept()
 
+    def zoom_in(self) -> None:
+        '''Increase UI zoom level.'''
+        new_zoom = min(self._zoom_level + self._zoom_step, self._max_zoom)
+        if new_zoom != self._zoom_level:
+            self._zoom_level = new_zoom
+            self._apply_zoom()
+            log.info(f'Zoomed in to {self._zoom_level:.1%}')
+
+    def zoom_out(self) -> None:
+        '''Decrease UI zoom level.'''
+        new_zoom = max(self._zoom_level - self._zoom_step, self._min_zoom)
+        if new_zoom != self._zoom_level:
+            self._zoom_level = new_zoom
+            self._apply_zoom()
+            log.info(f'Zoomed out to {self._zoom_level:.1%}')
+
+    def reset_zoom(self) -> None:
+        '''Reset UI zoom to 100%.'''
+        if self._zoom_level != 1.0:
+            self._zoom_level = 1.0
+            self._apply_zoom()
+            log.info('Reset zoom to 100%')
+
+    def _apply_zoom(self) -> None:
+        '''Apply current zoom level to all UI elements.'''
+        from . import _style
+
+        # reconfigure fonts with zoom multiplier
+        _style._config_fonts_to_screen(zoom_level=self._zoom_level)
+
+        # update status bar styling with new font size
+        if self._status_bar:
+            sb = self.statusBar()
+            sb.setStyleSheet((
+                f"color : {hcolor('gunmetal')};"
+                f"background : {hcolor('default_dark')};"
+                f"font-size : {_style._font_small.px_size}px;"
+                "padding : 0px;"
+            ))
+
+        # force update of mode label if it exists
+        if self._status_label:
+            self._status_label.setFont(_style._font_small.font)
+
+        # update godwidget and its children
+        if self.godwidget:
+            # update search widget if it exists
+            if hasattr(self.godwidget, 'search') and self.godwidget.search:
+                self.godwidget.search.update_fonts()
+
+            # update order mode panes in all chart views
+            self._update_chart_order_panes()
+
+            # recursively update all other widgets with stylesheets
+            self._refresh_widget_fonts(self.godwidget)
+            self.godwidget.update()
+
+    def _update_chart_order_panes(self) -> None:
+        '''Update order entry panels in all charts.'''
+        if not self.godwidget:
+            return
+
+        # iterate through all linked splits (hist and rt)
+        for splits_name in ['hist_linked', 'rt_linked']:
+            splits = getattr(self.godwidget, splits_name, None)
+            if not splits:
+                continue
+
+            # get main chart
+            chart = getattr(splits, 'chart', None)
+            if chart:
+                # update axes
+                self._update_chart_axes(chart)
+
+                # update order pane
+                if hasattr(chart, 'view'):
+                    view = chart.view
+                    if hasattr(view, 'order_mode') and view.order_mode:
+                        order_mode = view.order_mode
+                        if hasattr(order_mode, 'pane') and order_mode.pane:
+                            order_mode.pane.update_fonts()
+
+            # also check subplots
+            subplots = getattr(splits, 'subplots', {})
+            for name, subplot_chart in subplots.items():
+                # update subplot axes
+                self._update_chart_axes(subplot_chart)
+
+                # update subplot order pane
+                if hasattr(subplot_chart, 'view'):
+                    subplot_view = subplot_chart.view
+                    if hasattr(subplot_view, 'order_mode') and subplot_view.order_mode:
+                        subplot_order_mode = subplot_view.order_mode
+                        if hasattr(subplot_order_mode, 'pane') and subplot_order_mode.pane:
+                            subplot_order_mode.pane.update_fonts()
+
+            # resize all sidepanes to match main chart's sidepane width
+            # this ensures volume/subplot sidepanes match the main chart
+            if splits and hasattr(splits, 'resize_sidepanes'):
+                splits.resize_sidepanes()
+
+    def _update_chart_axes(self, chart) -> None:
+        '''Update axis fonts and sizing for a chart.'''
+        from . import _style
+
+        # update price axis (right side)
+        if hasattr(chart, 'pi') and chart.pi:
+            plot_item = chart.pi
+            # get all axes from plot item
+            for axis_name in ['left', 'right', 'bottom', 'top']:
+                axis = plot_item.getAxis(axis_name)
+                if axis and hasattr(axis, 'update_fonts'):
+                    axis.update_fonts(_style._font)
+
+            # force plot item to recalculate its entire layout
+            plot_item.updateGeometry()
+
+            # force chart widget to update
+            if hasattr(chart, 'updateGeometry'):
+                chart.updateGeometry()
+
+            # trigger a full scene update
+            if hasattr(chart, 'update'):
+                chart.update()
+
+    def _refresh_widget_fonts(self, widget: QWidget) -> None:
+        '''
+        Recursively update font sizes in all child widgets.
+
+        This handles widgets that have font-size hardcoded in their stylesheets.
+        '''
+        from . import _style
+
+        # recursively process all children
+        for child in widget.findChildren(QWidget):
+            # skip widgets that have their own update_fonts method (handled separately)
+            if hasattr(child, 'update_fonts'):
+                continue
+
+            # update child's stylesheet if it has font-size
+            child_stylesheet = child.styleSheet()
+            if child_stylesheet and 'font-size' in child_stylesheet:
+                # for labels and simple widgets, regenerate stylesheet
+                # this is a heuristic - may need refinement
+                try:
+                    child.setFont(_style._font.font)
+                except (AttributeError, RuntimeError):
+                    pass
+
+            # update child's font
+            try:
+                child.setFont(_style._font.font)
+            except (AttributeError, RuntimeError):
+                pass
+
 
 # singleton app per actor
 _qt_win: QMainWindow = None

piker/ui/qt.py

@@ -42,6 +42,7 @@ from PyQt6.QtCore import (
     QSize,
     QModelIndex,
     QItemSelectionModel,
+    QObject,
     pyqtBoundSignal,
     pyqtRemoveInputHook,
 )

pikerd.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+# macOS wrapper for pikerd to handle missing XDG_RUNTIME_DIR
+
+# Set up runtime directory for macOS if not already set
+if [ -z "$XDG_RUNTIME_DIR" ]; then
+    # Use macOS standard temp directory with user-specific subdirectory
+    export XDG_RUNTIME_DIR="/tmp/piker-runtime-$(id -u)"
+
+    # Create the directory if it doesn't exist
+    if [ ! -d "$XDG_RUNTIME_DIR" ]; then
+        mkdir -p "$XDG_RUNTIME_DIR"
+        # Set proper permissions (only user can access)
+        chmod 700 "$XDG_RUNTIME_DIR"
+    fi
+
+    echo "Set XDG_RUNTIME_DIR to: $XDG_RUNTIME_DIR"
+fi
+
+# Run pikerd with all passed arguments
+exec uv run pikerd "$@"