add transparency

Author: mlvzk

discocss

@@ -9,7 +9,7 @@ mkdir -p "$confdir"
 touch "$cssFile"
 
 cat <<EOF > "$preloadFile"
-(() => {
+module.exports = () => {
   const fs = require("fs");
   const confDir = "$confdir";
   const cssFile = "$cssFile";
@@ -29,7 +29,18 @@ cat <<EOF > "$preloadFile"
   }
 
   inject(require("electron").webFrame.context);
-})();
+};
+
+module.exports.mw = (mainWindow) => {
+  mainWindow.setBackgroundColor("#00000000");
+};
+
+module.exports.mo = (options) => {
+  options.transparent = true;
+  if (process.platform === "linux") {
+    options.frame = true;
+  }
+};
 EOF
 
 ln -f -s "$preloadFile" /tmp/discocss-preload.js
@@ -42,7 +53,11 @@ else
   core_asar="$(echo "$XDG_CONFIG_HOME/discord/"*"/modules/discord_desktop_core/core.asar")"
 fi
 
-LC_ALL=C sed $sed_options 's|  // App preload script, used to provide a replacement native API now that|try { require\(`/tmp/discocss-preload.js`) } catch \(e\) {console.error\(e\);} |' \
+app_preload_replace='s|  // App preload script, used to provide a replacement native API now that|try {require\(`/tmp/discocss-preload.js`)()} catch \(e\) {console.error\(e\);} |'
+launch_main_app_replace='s|// launch main app window; could be called multiple times for various reasons| const dp = require(`/tmp/discocss-preload.js`);                             |'
+frame_true_replace='s|    mainWindowOptions.frame = true;|}dp.mo(mainWindowOptions);{        |'
+causing_the_window_replace='s|// causing the window to be too small on a larger secondary display| dp.mw(mainWindow);                                                |'
+LC_ALL=C sed $sed_options "$app_preload_replace; $launch_main_app_replace; $frame_true_replace; $causing_the_window_replace" \
   "$core_asar"
 
 command -v discord && exec discord