From 7e6f8a14da9a99ced60a57b15ebad55d4d552b0e Mon Sep 17 00:00:00 2001
From: LitoMore <litomore@gmail.com>
Date: Tue, 27 Aug 2024 00:23:24 +0800
Subject: [PATCH] Add support for customizing icon size

---
 README.md      |  4 ++++
 source/app.js  |  4 ++--
 source/icon.js | 28 ++++++++++++++++++++++++++--
 3 files changed, 32 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index 69876f3..2cc5e96 100644
--- a/README.md
+++ b/README.md
@@ -39,6 +39,10 @@ Optional. It's used for dark mode and has the same function as `color`. The [CSS
 
 Optional. The icon is placed in a square viewBox by default. Use the query parameter `viewbox=auto` to adjust the viewBox to the same aspect ratio as the shape.
 
+#### `size`
+
+Optional. It's used for customizing the icon size. Icon will be scaled with its original aspect ratio.
+
 ### Examples
 
 - <img height="14" src="https://cdn.simpleicons.org/simpleicons/111/eee"/> - https://cdn.simpleicons.org/simpleicons
diff --git a/source/app.js b/source/app.js
index c6b7611..173b7be 100644
--- a/source/app.js
+++ b/source/app.js
@@ -35,10 +35,10 @@ router.get("/:iconSlug/:color?/:darkModeColor?", (ctx) => {
   cacheForSevenDays(ctx);
   const { iconSlug, color, darkModeColor } = ctx.params;
   const viewbox = ctx.request.url.searchParams.get("viewbox");
+  const size = ctx.request.url.searchParams.get("size");
   const icon = getSimpleIcon(iconSlug);
-
   if (icon) {
-    const iconSvg = getIconSvg(icon, color, darkModeColor, viewbox);
+    const iconSvg = getIconSvg(icon, color, darkModeColor, viewbox, size);
     ctx.response.headers.set("Content-Type", "image/svg+xml");
     ctx.response.body = iconSvg;
     return;
diff --git a/source/icon.js b/source/icon.js
index 5627c27..439e1ae 100644
--- a/source/icon.js
+++ b/source/icon.js
@@ -47,14 +47,19 @@ export const resetIconPosition = (path, iconWidth, iconHeight) => {
   return { path: pathReset, betterViewboxWidth };
 };
 
-export const getIconSvg = (icon, color = "", darkModeColor = "", viewbox) => {
+export const getIconSvg = (
+  icon,
+  color = "",
+  darkModeColor = "",
+  viewbox,
+  size,
+) => {
   const hex = normalizeColor(color) || `#${icon.hex}`;
   const darkModeHex = normalizeColor(darkModeColor) || `#${icon.hex}`;
   let iconSvg = icon.svg;
 
   if (viewbox === "auto") {
     const { width: iconWidth, height: iconHeight } = getIconSize(icon.path);
-
     const { path, betterViewboxWidth } = resetIconPosition(
       icon.path,
       iconWidth,
@@ -68,6 +73,25 @@ export const getIconSvg = (icon, color = "", darkModeColor = "", viewbox) => {
       .replace(/<path d=".*"\/>/, `<path d="${path}"/>`);
   }
 
+  const iconSize = parseInt(size, 10);
+  if (iconSize && iconSize > 0) {
+    const sizePattern = /viewBox="0 0 (?<width>\d+) (?<height>\d+)"/;
+    const sizeMatch = sizePattern.exec(iconSvg);
+    const width = sizeMatch?.groups?.width;
+    const height = sizeMatch?.groups?.height;
+    if (Number(width) && Number(height)) {
+      const maxScale = (2 ** 14 - 1) / 24;
+      const minScale = 3 / 24;
+      const scale = Math.max(Math.min(maxScale, iconSize / 24), minScale);
+      const iconWidth = Math.round(width * scale);
+      const iconHeight = Math.round(height * scale);
+      iconSvg = iconSvg.replace(
+        "<svg ",
+        `<svg width="${iconWidth}" height="${iconHeight}" `,
+      );
+    }
+  }
+
   if (darkModeColor && hex !== darkModeHex) {
     return iconSvg.replace(
       "<path ",