feat(theme): user-selectable custom fonts (#19)

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Add a per-role font picker in Appearance settings. The two Material
typeface roles can be set independently: brand (display/headline) and
plain (title/body/label). Each can be the system default, a bundled
font (Atkinson Hyperlegible, Lora, JetBrains Mono), or a .ttf/.otf the
user loads from the device. The choice rebuilds the app-wide typography
in MainActivity; a null/"system" choice leaves the Material default.

Per the issue discussion the font-size and font-colour parts were
dropped — Android's accessibility font scaling and the dynamic-colour
theme already cover them.

Custom files are copied into app-private storage and validated with
android.graphics.fonts.Font.Builder before replacing the previous one,
so a bad pick can't wedge global text rendering; a missing/unreadable
file degrades to the system font. Each bundled font is previewed in its
own face in the picker. OFL licences + attribution vendored under
licenses/fonts/.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

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This commit is contained in:

Jean-Luc Makiola

2026-07-01 15:09:41 +02:00

parent 69460bc35a

commit bfc9a0db39

20 changed files with 839 additions and 3 deletions

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app/src/main/res/font/lora.ttf Normal file

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