brain_deer.presentation.typography¶

Cross-platform font stacks and pixel-based font construction.

Qt reports logical DPI as 72 on macOS but 96 on Windows and ~96-100 on Linux, so a point size resolves to a different pixel height on each platform (QFont("Arial", 12) measures 12px on macOS, 16px on Windows, 17px on a 100dpi Linux screen). BrainDeer’s stylesheets size text in px, which is DPI-invariant, so any point-sized widget drifts away from its stylesheet-sized neighbours off macOS.

Everything here sizes in pixels to stay in the stylesheets’ unit. Both QSS px and QFont.setPixelSize are device-independent pixels and scale together under AA_EnableHighDpiScaling, so this is DPI-invariant without giving up HiDPI support.

Functions¶

`ui_font_family`(→ str)	Return the first installed UI family, or "" to let Qt choose.
`mono_font_family`(→ str)	Return the first installed monospace family, or the generic alias.
`ui_font`(→ PyQt5.QtGui.QFont)	Build a UI font of px device-independent pixels.
`mono_font`(→ PyQt5.QtGui.QFont)	Build a monospace font of px device-independent pixels.
`qss_ui_family`(→ str)	UI stack as a stylesheet `font-family` value.
`qss_mono_family`(→ str)	Monospace stack as a stylesheet `font-family` value.

Module Contents¶

brain_deer.presentation.typography.ui_font_family() → str¶: Return the first installed UI family, or “” to let Qt choose.

brain_deer.presentation.typography.mono_font_family() → str¶: Return the first installed monospace family, or the generic alias.

brain_deer.presentation.typography.ui_font(px: int, weight: int = QFont.Normal) → PyQt5.QtGui.QFont¶: Build a UI font of px device-independent pixels.

brain_deer.presentation.typography.mono_font(px: int, weight: int = QFont.Normal) → PyQt5.QtGui.QFont¶: Build a monospace font of px device-independent pixels.

brain_deer.presentation.typography.qss_ui_family() → str¶: UI stack as a stylesheet font-family value.

brain_deer.presentation.typography.qss_mono_family() → str¶: Monospace stack as a stylesheet font-family value.