moved generating tray icons to build step

Signed-off-by: Roman <ixrock@gmail.com>

build/build_tray_icon.ts

@@ -0,0 +1,51 @@
+// Generate tray icons from SVG to PNG + different sizes and colors (B&W)
+// Command: `yarn build:tray-icons`
+import path from "path"
+import sharp from "sharp";
+import jsdom from "jsdom"
+import fs from "fs-extra"
+
+export async function generateTrayIcon(
+  {
+    outputFilename = "tray_icon", // e.g. output tray_icon_dark@2x.png
+    svgIconPath = path.resolve(__dirname, "../src/renderer/components/icon/logo-lens.svg"),
+    outputFolder = path.resolve(__dirname, "./icons"),
+    dpiSuffix = "2x",
+    pixelSize = 32,
+    shouldUseDarkColors = false, // managed by electron.nativeTheme.shouldUseDarkColors
+  } = {}) {
+  outputFilename += shouldUseDarkColors ? "_dark" : ""
+  dpiSuffix = dpiSuffix !== "1x" ? `@${dpiSuffix}` : ""
+  const pngIconDestPath = path.resolve(outputFolder, `${outputFilename}${dpiSuffix}.png`)
+  try {
+    // Modify .SVG colors
+    const trayIconColor = shouldUseDarkColors ? "white" : "black";
+    const svgDom = await jsdom.JSDOM.fromFile(svgIconPath);
+    const svgRoot = svgDom.window.document.body.getElementsByTagName("svg")[0];
+    svgRoot.innerHTML += `<style>* {fill: ${trayIconColor} !important;}</style>`
+    const svgIconBuffer = Buffer.from(svgRoot.outerHTML);
+
+    // Resize and convert to .PNG
+    const pngIconBuffer: Buffer = await sharp(svgIconBuffer)
+      .resize({ width: pixelSize, height: pixelSize })
+      .png()
+      .toBuffer();
+
+    // Save icon
+    await fs.writeFile(pngIconDestPath, pngIconBuffer);
+    console.info(`[DONE]: Tray icon saved at "${pngIconDestPath}"`);
+  } catch (err) {
+    console.error(`[ERROR]: ${err}`);
+  }
+}
+
+// Run
+const iconSizes: Record<string, number> = {
+  "1x": 16,
+  "2x": 32,
+  "3x": 48,
+};
+Object.entries(iconSizes).forEach(([dpiSuffix, pixelSize]) => {
+  generateTrayIcon({ dpiSuffix, pixelSize, shouldUseDarkColors: false });
+  generateTrayIcon({ dpiSuffix, pixelSize, shouldUseDarkColors: true });
+});