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[Editor] Add a color picker with predefined colors for highlighting text (bug 1866434)

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The doorhanger for highlighting has a basic color picker composed of 5 predefined colors
to set the default color to use.
These colors can be changed thanks to a preference for now but it's something which could
be changed in the Firefox settings in the future.
Each highlight has in its own toolbar a color picker to just change its color.
The different color pickers are so similar (modulo few differences in their styles) that
this patch introduces a new class ColorPicker which provides a color picker component
which could be reused in future editors.
All in all, a large part of this patch is dedicated to color picker itself and its style
and the rest is almost a matter of wiring the component.
This commit is contained in:
Calixte Denizet 2023-11-30 16:21:13 +01:00
parent c0436013a0
commit ff23d37fa2
22 changed files with 573 additions and 87 deletions
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8
web/draw_layer_builder.css
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@ -36,8 +36,14 @@
}
&.highlight {
--blend-mode: multiply;
@media screen and (forced-colors: active) {
--blend-mode: difference;
}
position: absolute;
mix-blend-mode: multiply;
mix-blend-mode: var(--blend-mode);
fill-rule: evenodd;
}