The padlock was drawn in thin blue strokes on slate: at 36 px the outline muddied and the shackle vanished. A filled white shield with a punched keyhole keeps its silhouette at every size, and says protection more plainly.
The keyhole is CUT OUT rather than painted, through an even-odd fill on a single path - painting it meant keeping two files agreeing on one colour, and any drift would have read as a smudge. The launch layer is the exception: it sits flat on the system background, where a cut-out would be a hole, so there the keyhole is painted and stays entirely inside the white shield.
The launch background takes the top of the app gradient instead of slate, so the launch screen dissolves into the first screen rather than cutting against it. No gradient inside the vectors: the aapt this chain uses does not know inline gradients.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Cyan on slate, the accent the desktop app already uses. Adaptive vectors for
Android 8+ - background covering the full 108 units since the launcher applies
its own mask, foreground kept inside the central 66 that no mask can crop -
plus a monochrome layer for Android 13 themed icons, where the keyhole has to
be a hole in the path rather than a shape in another colour.
PNGs for older launchers come from make-icons.ps1, same drawing, and carry
their own rounded square since nothing masks them.
They are copied over Delphi's in repack-apk.ps1, for the same reason as
libsk4d.so: the Android_LauncherIcon and Android_AdaptiveIcon properties ought
to be enough, and nothing deploys them here.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
r-zakarya