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ui: add shadow to chessground dragged pieces #19778

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ui: add shadow to chessground dragged pieces #19778

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8497eb9
ui: add shadow to chessground dragged pieces
Simek Mar 10, 2026
f4f2cfb
fix stylelint warnings
Simek Mar 10, 2026
6cce4c6
Merge branch 'master' into ui-chessground-add-shadow-to-dragged-piece
fitztrev Mar 10, 2026
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25 changes: 22 additions & 3 deletions ui/lib/css/theme/board/_chessground.scss
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Original file line number Diff line number Diff line change
@@ -1,5 +1,12 @@
@import 'board-2d';

@mixin with-filter-shadow-while-dragging($extraFilters: ()) {
&.dragging {
filter: drop-shadow(3px 4px 4px rgba(0, 0, 0, 0.5)) $extraFilters;
@content;
}
}

cg-board {
@extend %box-shadow, %abs-100;
@include prevent-select;
Expand Down Expand Up @@ -136,7 +143,7 @@ piece {
will-change: transform;
pointer-events: none;

&.dragging {
@include with-filter-shadow-while-dragging {
cursor: move;
z-index: $z-cg__piece_dragging-204 !important;
}
Expand Down Expand Up @@ -211,19 +218,31 @@ cg-auto-pieces {
}

html:not(.transp) body:not(.simple-board) {
$brightness-filter: brightness(calc(0.35 + 0.0065 * min(120, var(---board-brightness))));

&.coords-in coord,
cg-board piece,
cg-board square,
.cg-custom-svgs,
.cg-custom-below {
filter: brightness(calc(0.35 + 0.0065 * min(120, var(---board-brightness))));
filter: $brightness-filter;
}

cg-board piece {
@include with-filter-shadow-while-dragging($brightness-filter);
}
}

html.transp body:not(.simple-board) cg-board {
$opacity-filter: calc(min(1, 0.5 + var(---board-opacity) / 100));

piece,
square {
opacity: calc(min(1, 0.5 + var(---board-opacity) / 100));
opacity: $opacity-filter;
}

piece {
@include with-filter-shadow-while-dragging($opacity-filter);
}
}

Expand Down