🚀svg dark mode

packages/action/generateContributionSnake.ts

@@ -25,6 +25,10 @@ export const generateContributionSnake = async (
     colorEmpty: colorScheme[0],
     colorSnake: "purple",
     cells,
+    dark: {
+      colorEmpty: "#161b22",
+      colorDots: { 1: "#01311f", 2: "#034525", 3: "#0f6d31", 4: "#00c647" },
+    },
   };
 
   const gifOptions = { frameDuration: 100, step: 1 };

packages/demo/canvas.ts

@@ -12,10 +12,13 @@ export const drawOptions = {
     2: "#40c463",
     3: "#30a14e",
     4: "#216e39",
-    5: "orange",
   },
   colorEmpty: "#ebedf0",
   colorSnake: "purple",
+  dark: {
+    colorEmpty: "#161b22",
+    colorDots: { 1: "#01311f", 2: "#034525", 3: "#0f6d31", 4: "#00c647" },
+  },
 };
 
 const getPointedCell = (canvas: HTMLCanvasElement) => ({

packages/svg-creator/__tests__/createSvg.spec.ts

@@ -13,6 +13,10 @@ const drawOptions = {
   colorDots: { 1: "#9be9a8", 2: "#40c463", 3: "#30a14e", 4: "#216e39" },
   colorEmpty: "#ebedf0",
   colorSnake: "purple",
+  dark: {
+    colorEmpty: "#161b22",
+    colorDots: { 1: "#01311f", 2: "#034525", 3: "#0f6d31", 4: "#00c647" },
+  },
 };
 
 const gifOptions = { frameDuration: 100, step: 1 };

packages/svg-creator/grid.ts

@@ -15,14 +15,7 @@ const percent = (x: number) => (x * 100).toFixed(2);
 
 export const createGrid = (
   cells: (Point & { t: number | null; color: Color | Empty })[],
-  {
-    colorEmpty,
-    colorBorder,
-    sizeBorderRadius,
-    colorDots,
-    sizeDot,
-    sizeCell,
-  }: Options,
+  { sizeBorderRadius, sizeDot, sizeCell }: Options,
   duration: number
 ) => {
   const svgElements: string[] = [];
@@ -31,10 +24,10 @@ export const createGrid = (
       shape-rendering: geometricPrecision;
       rx: ${sizeBorderRadius};
       ry: ${sizeBorderRadius};
-      fill:${colorEmpty};
+      fill: var(--ce);
       stroke-width: 1px;
-      stroke: ${colorBorder};
-      animation: none  ${duration}ms linear infinite;
+      stroke: var(--cb);
+      animation: none ${duration}ms linear infinite;
     }`,
   ];
 
@@ -47,16 +40,14 @@ export const createGrid = (
 
     if (t !== null) {
       const animationName = id;
-      // @ts-ignore
-      const fill = colorDots[color];
 
       styles.push(
         `@keyframes ${animationName} {` +
-          `${percent(t - 0.0001)}%{fill:${fill}}` +
-          `${percent(t + 0.0001)}%,100%{fill:${colorEmpty}}` +
+          `${percent(t - 0.0001)}%{fill:var(--c${color})}` +
+          `${percent(t + 0.0001)}%,100%{fill:var(--ce)}` +
           "}",
 
-        `.c.${id}{fill: ${fill};animation-name: ${animationName}}`
+        `.c.${id}{fill: var(--c${color}); animation-name: ${animationName}}`
       );
     }
 

packages/svg-creator/index.ts

@@ -24,6 +24,12 @@ export type Options = {
   sizeDot: number;
   sizeBorderRadius: number;
   cells?: Point[];
+  dark?: {
+    colorDots: Record<Color, string>;
+    colorEmpty: string;
+    colorBorder?: string;
+    colorSnake?: string;
+  };
 };
 
 const getCellsFromGrid = ({ width, height }: Grid) =>
@@ -94,10 +100,12 @@ export const createSvg = (
     height,
   ].join(" ");
 
-  const style = elements
-    .map((e) => e.styles)
-    .flat()
-    .join("\n");
+  const style =
+    generateColorVar(drawOptions) +
+    elements
+      .map((e) => e.styles)
+      .flat()
+      .join("\n");
 
   const svg = [
     h("svg", {
@@ -121,3 +129,29 @@ export const createSvg = (
 
 const optimizeCss = (css: string) => csso.minify(css).css;
 const optimizeSvg = (svg: string) => svg;
+
+const generateColorVar = (drawOptions: Options) =>
+  `
+    :root {
+    --cb: ${drawOptions.colorBorder};
+    --cs: ${drawOptions.colorSnake};
+    --ce: ${drawOptions.colorEmpty};
+    ${Object.entries(drawOptions.colorDots)
+      .map(([i, color]) => `--c${i}:${color};`)
+      .join("")}
+    }
+    ` +
+  (drawOptions.dark
+    ? `
+    @media (prefers-color-scheme: dark) {
+      :root {
+        --cb: ${drawOptions.dark.colorBorder || drawOptions.colorBorder};
+        --cs: ${drawOptions.dark.colorSnake || drawOptions.colorSnake};
+        --ce: ${drawOptions.dark.colorEmpty};
+        ${Object.entries(drawOptions.dark.colorDots)
+          .map(([i, color]) => `--c${i}:${color};`)
+          .join("")}
+      }
+    }
+`
+    : "");

packages/svg-creator/snake.ts

@@ -20,7 +20,7 @@ const lerp = (k: number, a: number, b: number) => (1 - k) * a + k * b;
 
 export const createSnake = (
   chain: Snake[],
-  { sizeCell, colorSnake, sizeDot }: Options,
+  { sizeCell, sizeDot }: Options,
   duration: number
 ) => {
   const snakeN = chain[0] ? getSnakeLength(chain[0]) : 0;
@@ -61,7 +61,7 @@ export const createSnake = (
   const styles = [
     `.s{ 
       shape-rendering:geometricPrecision;
-      fill:${colorSnake};
+      fill:var(--cs);
       animation: none linear ${duration}ms infinite
     }`,
 

packages/svg-creator/stack.ts

@@ -2,7 +2,6 @@ import type { Color, Empty } from "@snk/types/grid";
 import { h } from "./utils";
 
 export type Options = {
-  colorDots: Record<Color, string>;
   sizeDot: number;
 };
 
@@ -10,7 +9,7 @@ const percent = (x: number) => (x * 100).toFixed(2);
 
 export const createStack = (
   cells: { t: number | null; color: Color | Empty }[],
-  { colorDots, sizeDot }: Options,
+  { sizeDot }: Options,
   width: number,
   y: number,
   duration: number
@@ -44,9 +43,6 @@ export const createStack = (
     const animationName = id;
     const x = (nx * m).toFixed(1);
 
-    // @ts-ignore
-    const fill = colorDots[color];
-
     nx += ts.length;
 
     svgElements.push(
@@ -76,7 +72,7 @@ export const createStack = (
           .join("\n") +
         "}",
 
-      `.u.${id}{fill:${fill};animation-name:${animationName};transform-origin:${x}px 0}`
+      `.u.${id}{fill:var(--c${color});animation-name:${animationName};transform-origin:${x}px 0}`
     );
   }