fix: linux titlebar (#6483)

packages/bruno-app/src/components/AppTitleBar/StyledWrapper.js

@@ -201,6 +201,15 @@ const Wrapper = styled.div`
     margin-left: 6px;
   }
 
+  &.os-linux .titlebar-content {
+    padding-right: 0px;
+    padding-left: 0px;
+  }
+
+  &.os-linux .titlebar-left {
+    margin-left: 6px;
+  }
+
   /* Custom window control buttons for Windows - always interactive, above modal overlay */
   .window-controls {
     display: flex;

packages/bruno-app/src/components/AppTitleBar/index.js

@@ -20,11 +20,12 @@ import IconBottombarToggle from 'components/Icons/IconBottombarToggle/index';
 import StyledWrapper from './StyledWrapper';
 import { toTitleCase } from 'utils/common/index';
 import ResponseLayoutToggle from 'components/ResponsePane/ResponseLayoutToggle';
-import { isMacOS, isWindowsOS } from 'utils/common/platform';
+import { isMacOS, isWindowsOS, isLinuxOS } from 'utils/common/platform';
 
 const getOsClass = () => {
   if (isMacOS()) return 'os-mac';
   if (isWindowsOS()) return 'os-windows';
+  if (isLinuxOS()) return 'os-linux';
   return 'os-other';
 };
 
@@ -34,6 +35,8 @@ const AppTitleBar = () => {
   const [isMaximized, setIsMaximized] = useState(false);
   const osClass = getOsClass();
   const isWindows = osClass === 'os-windows';
+  const isLinux = osClass === 'os-linux';
+  const showWindowControls = isWindows || isLinux;
 
   // Listen for fullscreen changes
   useEffect(() => {
@@ -54,13 +57,11 @@ const AppTitleBar = () => {
     };
   }, []);
 
-  // Check initial maximized state and listen for changes (Windows only)
   useEffect(() => {
-    if (!isWindows) return;
+    if (!showWindowControls) return;
     const { ipcRenderer } = window;
     if (!ipcRenderer) return;
 
-    // Get initial state
     ipcRenderer.invoke('renderer:window-is-maximized')
       .then((maximized) => {
         setIsMaximized(maximized);
@@ -69,7 +70,6 @@ const AppTitleBar = () => {
         console.error('Error getting initial maximized state:', error);
       });
 
-    // Listen for maximize/unmaximize events from main process
     const removeMaximizedListener = ipcRenderer.on('main:window-maximized', () => {
       setIsMaximized(true);
     });
@@ -82,9 +82,8 @@ const AppTitleBar = () => {
       removeMaximizedListener();
       removeUnmaximizedListener();
     };
-  }, [isWindows]);
+  }, [showWindowControls]);
 
-  // Window control handlers (Windows only) - these always work, even with modals open
   const handleMinimize = useCallback(() => {
     window.ipcRenderer?.send('renderer:window-minimize');
   }, []);
@@ -300,7 +299,7 @@ const AppTitleBar = () => {
             <ResponseLayoutToggle />
           </div>
 
-          {isWindows && (
+          {showWindowControls && (
             <div className="window-controls">
               <button
                 className="window-control-btn minimize"

packages/bruno-app/src/utils/common/platform.js

@@ -33,6 +33,13 @@ export const isMacOS = () => {
   return osFamily.includes('os x');
 };
 
+export const isLinuxOS = () => {
+  const os = platform.os;
+  const osFamily = os.family.toLowerCase();
+
+  return osFamily.includes('linux') || osFamily.includes('ubuntu') || osFamily.includes('debian') || osFamily.includes('fedora') || osFamily.includes('centos') || osFamily.includes('arch');
+};
+
 export const getAppInstallDate = () => {
   let dateString = localStorage.getItem('bruno.installedOn');
 

packages/bruno-electron/src/index.js

@@ -85,6 +85,7 @@ setContentSecurityPolicy(contentSecurityPolicy.join(';') + ';');
 const menu = Menu.buildFromTemplate(menuTemplate);
 const isMac = process.platform === 'darwin';
 const isWindows = process.platform === 'win32';
+const isLinux = process.platform === 'linux';
 
 let mainWindow;
 let appProtocolUrl;
@@ -155,8 +156,8 @@ app.on('ready', async () => {
     },
     title: 'Bruno',
     icon: path.join(__dirname, 'about/256x256.png'),
-    // Custom title bar – ensure React titlebar occupies the window chrome on all OSes
-    titleBarStyle: isMac ? 'hiddenInset' : isWindows ? 'hidden' : 'default',
+    titleBarStyle: isMac ? 'hiddenInset' : isWindows ? 'hidden' : undefined,
+    frame: isLinux ? false : true,
     trafficLightPosition: isMac ? { x: 12, y: 10 } : undefined
     // we will bring this back
     // see https://github.com/usebruno/bruno/issues/440
@@ -167,14 +168,13 @@ app.on('ready', async () => {
     mainWindow.maximize();
   }
 
-  // Window control IPC handlers (Windows custom titlebar)
   ipcMain.on('renderer:window-minimize', () => {
-    if (!isWindows) return;
+    if (!isWindows && !isLinux) return;
     mainWindow.minimize();
   });
 
   ipcMain.on('renderer:window-maximize', () => {
-    if (!isWindows) return;
+    if (!isWindows && !isLinux) return;
     if (mainWindow.isMaximized()) {
       mainWindow.unmaximize();
     } else {
@@ -183,12 +183,12 @@ app.on('ready', async () => {
   });
 
   ipcMain.on('renderer:window-close', () => {
-    if (!isWindows) return;
+    if (!isWindows && !isLinux) return;
     mainWindow.close();
   });
 
   ipcMain.handle('renderer:window-is-maximized', () => {
-    if (!isWindows) return false;
+    if (!isWindows && !isLinux) return false;
     return mainWindow.isMaximized();
   });