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fixup for a=0, improve comment

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This commit is contained in:
tophf 2021-03-05 12:05:37 +03:00
parent a4dbe27b46
commit 13ca5b2808
1 changed files with 5 additions and 4 deletions
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9
js/usercss-compiler.js
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@ -73,12 +73,13 @@ const BUILDERS = Object.assign(Object.create(null), {
case 'color': case 'color':
value = colorConverter.parse(value) || null; value = colorConverter.parse(value) || null;
if (value) { if (value) {
/* `alpha` is present or `value` is opaque: #rrggbb /* #rrggbb - inline alpha is present; an opaque hsl/a; #rrggbb originally
* `isUsoRgb`: r, g, b -- transparency is usually handled via a separate var * rgba(r, g, b, a) - transparency <1 is present (Chrome pre-66 compatibility)
* `value` is transparent: rgba(r, g, b, a) -- for pre-66 Chrome * rgb(r, g, b) - if color is rgb/a with a=1, note: r/g/b will be rounded
* r, g, b - if the var has `-rgb` suffix per USO specification
* TODO: when minimum_chrome_version >= 66 try to keep `value` intact */ * TODO: when minimum_chrome_version >= 66 try to keep `value` intact */
if (alpha) delete value.a; if (alpha) delete value.a;
const isRgb = isUsoRgb || value.type === 'rgb' || value.a > 0 && value.a < 1; const isRgb = isUsoRgb || value.type === 'rgb' || value.a != null && value.a !== 1;
const usoMode = isUsoRgb || !isRgb; const usoMode = isUsoRgb || !isRgb;
value = colorConverter.format(value, isRgb ? 'rgb' : 'hex', undefined, usoMode); value = colorConverter.format(value, isRgb ? 'rgb' : 'hex', undefined, usoMode);
} }