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feat(desktop): add fade-edge mask utilities #3735

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Merged
Kitenite merged 2 commits into from
Apr 25, 2026
Merged

feat(desktop): add fade-edge mask utilities #3735

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feat(desktop): add fade-edge mask utilities
Kitenite Apr 25, 2026
84934a2
style: blank line before mask-image declaration
Kitenite Apr 25, 2026
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1 change: 1 addition & 0 deletions apps/desktop/src/renderer/globals.css
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
@import "tailwindcss";
@import "tw-animate-css";
@import "streamdown/styles.css";
@import "./styles/fade-edge.css";

@source "./**/*.{ts,tsx}";
@source "../../../../packages/ui/src/**/*.{ts,tsx}";
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70 changes: 70 additions & 0 deletions apps/desktop/src/renderer/styles/fade-edge.css
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Original file line number Diff line number Diff line change
@@ -0,0 +1,70 @@
/**
* Edge-fade mask utilities.
*
* Fades out one or more edges of an element via a linear-gradient mask.
* Composable: `class="fade-edge-r fade-edge-b"` fades both edges.
* Override the fade size per element with `[--fade-edge-size:2rem]`.
*
* NOTE: This is a generic, app-agnostic utility. When a second consumer
* outside `apps/desktop` needs it, promote this file to
* `packages/ui/src/styles/fade-edge.css` and update consumers' imports.
*/

@layer utilities {
.fade-edge-t,
.fade-edge-r,
.fade-edge-b,
.fade-edge-l {
--fade-edge-size: 1.5rem;
--fade-edge-t-size: 0px;
--fade-edge-r-size: 0px;
--fade-edge-b-size: 0px;
--fade-edge-l-size: 0px;

mask-image:
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linear-gradient(
to bottom,
transparent,
black var(--fade-edge-t-size),
black calc(100% - var(--fade-edge-b-size)),
transparent
),
linear-gradient(
to right,
transparent,
black var(--fade-edge-l-size),
black calc(100% - var(--fade-edge-r-size)),
transparent
);
-webkit-mask-image:
linear-gradient(
to bottom,
transparent,
black var(--fade-edge-t-size),
black calc(100% - var(--fade-edge-b-size)),
transparent
),
linear-gradient(
to right,
transparent,
black var(--fade-edge-l-size),
black calc(100% - var(--fade-edge-r-size)),
transparent
);
mask-composite: intersect;
-webkit-mask-composite: source-in;
}

.fade-edge-t {
--fade-edge-t-size: var(--fade-edge-size);
}
.fade-edge-r {
--fade-edge-r-size: var(--fade-edge-size);
}
.fade-edge-b {
--fade-edge-b-size: var(--fade-edge-size);
}
.fade-edge-l {
--fade-edge-l-size: var(--fade-edge-size);
}
}
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