Module font_settings 

System-wide font / text rendering settings.

Mirrors the theme::current_visuals / theme::set_visuals pattern and the scrollbar-style globals (current_scroll_style / set_scroll_style). Widgets that care about rendering style (Label, Button, TextField, …) should consult these at layout/paint time so changes made by the System window propagate without a widget-tree rebuild.

Convention

Each setting has:

• an override stored in a thread-local cell (None or false by default),
• a getter (e.g. current_system_font, lcd_enabled),
• a setter (e.g. set_system_font, set_lcd_enabled).

Widgets pick between the global override and their own per-instance value — analogous to how a ScrollView takes the global scroll style unless the caller wired an explicit one.

Functions

clear_lcd_enabled_override

Drop any explicit override and return to device-scale-derived auto. Counterpart to set_lcd_enabled; used by tests and by System- window “reset to default” affordances.

current_faux_italic

current_faux_weight

current_font_size_scale

Current font size multiplier. Widgets reading a self.font_size should consult this (via e.g. Label::active_font_size) so a single slider in the System window can grow or shrink all text uniformly.

current_gamma

current_interval

current_primary_weight

current_system_font

Current system font override, if set. Widgets should prefer this over their own self.font when the override is Some(_) so user changes in the System window propagate live.

current_typography_epoch

Current typography epoch. Widget render paths read this each frame.

current_width

hinting_enabled

lcd_enabled

Whether widgets should rasterise text through the LCD subpixel path.

set_faux_italic

set_faux_weight

set_font_size_scale

Set the system font-size multiplier. Clamped to a sensible range so typos or edge-case inputs can’t hide every label or fry the layout.

set_gamma

set_hinting_enabled

set_interval

set_lcd_enabled

Pin LCD subpixel rendering to a specific value, overriding the device-scale-derived default. System-window toggles use this; apps that just want sensible default behaviour should not call it.

set_primary_weight

set_system_font

Replace the system font override. Pass None to clear and fall back to per-widget fonts.

set_width