Move generated content to CSS

Author: DmitrySharabin

src/color-swatch/color-swatch.css

@@ -3,10 +3,7 @@
 	--_transparency-background: var(--transparency-background, transparent);
 	--_transparency-darkness: var(--transparency-darkness, 5%);
 	--_transparency-grid: var(--transparency-grid,
-		repeating-conic-gradient(transparent 0 25%, rgb(0 0 0 / var(--_transparency-darkness)) 0 50%)
-		0 0 / calc(2 * var(--_transparency-cell-size)) calc(2 * var(--_transparency-cell-size))
-		content-box border-box var(--_transparency-background)
-	);
+			repeating-conic-gradient(transparent 0 25%, rgb(0 0 0 / var(--_transparency-darkness)) 0 50%) 0 0 / calc(2 * var(--_transparency-cell-size)) calc(2 * var(--_transparency-cell-size)) content-box border-box var(--_transparency-background));
 	--_positive-delta-color: var(--positive-delta-color, hsl(120, 80%, 25%));
 	--_negative-delta-color: var(--negative-delta-color, hsl(0, 85%, 40%));
 
@@ -100,13 +97,29 @@ slot {
 			&.delta {
 				color: var(--_delta-color);
 
+				&::before {
+					content: "(";
+				}
+
+				&::after {
+					content: ")";
+				}
+
 				&.positive {
 					--_delta-color: var(--_positive-delta-color);
+
+					&::before {
+						content: "(+";
+					}
 				}
 
 				&.negative {
 					--_delta-color: var(--_negative-delta-color);
 				}
+
+				&:not(.angle)::after {
+					content: "%)";
+				}
 			}
 		}
 	}
@@ -127,7 +140,7 @@ slot {
 		align-items: baseline;
 	}
 
-	@container color-swatch (width <= 5rem) {
+	@container color-swatch (width <=5rem) {
 		font-size: 80%;
 	}
 

src/color-swatch/color-swatch.js

@@ -138,13 +138,17 @@ const Self = class ColorSwatch extends ColorElement {
 
 				if (this.colorDeltas?.[key] && this.infoCoordsResolved?.[key]) {
 					let delta = this.colorDeltas[key];
-					let sign = delta > 0 ? "+" : "";
-					let className = delta > 0 ? "positive" : "negative";
-					let isAngle = this.infoCoordsResolved[key]?.type === "angle";
+					let classes = delta > 0 ? "positive" : "negative";
+
+					if (this.infoCoordsResolved[key]?.type === "angle") {
+						classes += " angle";
+					}
+					else {
+						delta = delta / rawValue * 100;
+					}
 
-					delta = isAngle ? delta : delta / rawValue * 100;
 					delta = typeof delta === "number" ? Number(delta.toPrecision(4)) : delta;
-					ret += `<dd class="delta ${className}">(${ sign }${ delta }${ !isAngle ? "%" : ""})</dd>`;
+					ret += `<dd class="delta ${classes}">${ delta }</dd>`;
 				}
 
 				ret += "</div>";