This plugin allows Flutter desktop apps to resizing and repositioning the window.
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- Platform Support
- Quick Start
- Articles
- Who's using it?
- API
- WindowManager
- Methods
- waitUntilReadyToShow
- destroy
- close
- isPreventClose
- setPreventClose
- focus
- blur
macoswindows - isFocused
macoswindows - show
- hide
- isVisible
- isMaximized
- maximize
- unmaximize
- isMinimized
- minimize
- restore
- isFullScreen
- setFullScreen
- setAspectRatio
- setBackgroundColor
- setAlignment
- center
- getBounds
- setBounds
- getSize
- setSize
- getPosition
- setPosition
- setMinimumSize
- setMaximumSize
- isResizable
- setResizable
- isMovable
macos - setMovable
macos - isMinimizable
macoswindows - setMinimizable
macoswindows - isClosable
windows - isMaximizable
macoswindows - setMaximizable
- setClosable
macoswindows - isAlwaysOnTop
- setAlwaysOnTop
- isAlwaysOnBottom
- setAlwaysOnBottom
linuxwindows - getTitle
- setTitle
- setTitleBarStyle
- getTitleBarHeight
- isSkipTaskbar
- setSkipTaskbar
- setProgressBar
macoswindows - setIcon
windows - hasShadow
macoswindows - setHasShadow
macoswindows - getOpacity
- setOpacity
- setBrightness
- setIgnoreMouseEvents
- startDragging
- startResizing
linuxwindows - grabKeyboard
linux - ungrabKeyboard
linux
- Methods
- WindowListener
- WindowManager
- License
| Linux | macOS | Windows |
|---|---|---|
| ✔️ | ✔️ | ✔️ |
Add this to your package's pubspec.yaml file:
dependencies:
window_manager: ^0.3.4Or
dependencies:
window_manager:
git:
url: https://github.com/leanflutter/window_manager.git
ref: mainimport 'package:flutter/material.dart';
import 'package:window_manager/window_manager.dart';
void main() async {
WidgetsFlutterBinding.ensureInitialized();
// Must add this line.
await windowManager.ensureInitialized();
WindowOptions windowOptions = WindowOptions(
size: Size(800, 600),
center: true,
backgroundColor: Colors.transparent,
skipTaskbar: false,
titleBarStyle: TitleBarStyle.hidden,
);
windowManager.waitUntilReadyToShow(windowOptions, () async {
await windowManager.show();
await windowManager.focus();
});
runApp(MyApp());
}
Please see the example app of this plugin for a full example.
import 'package:flutter/cupertino.dart';
import 'package:window_manager/window_manager.dart';
class HomePage extends StatefulWidget {
@override
_HomePageState createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> with WindowListener {
@override
void initState() {
super.initState();
windowManager.addListener(this);
}
@override
void dispose() {
windowManager.removeListener(this);
super.dispose();
}
@override
Widget build(BuildContext context) {
// ...
}
@override
void onWindowEvent(String eventName) {
print('[WindowManager] onWindowEvent: $eventName');
}
@override
void onWindowClose() {
// do something
}
@override
void onWindowFocus() {
// do something
}
@override
void onWindowBlur() {
// do something
}
@override
void onWindowMaximize() {
// do something
}
@override
void onWindowUnmaximize() {
// do something
}
@override
void onWindowMinimize() {
// do something
}
@override
void onWindowRestore() {
// do something
}
@override
void onWindowResize() {
// do something
}
@override
void onWindowMove() {
// do something
}
@override
void onWindowEnterFullScreen() {
// do something
}
@override
void onWindowLeaveFullScreen() {
// do something
}
}If you need to use the hide method, you need to disable QuitOnClose.
Change the file macos/Runner/AppDelegate.swift as follows:
import Cocoa
import FlutterMacOS
@NSApplicationMain
class AppDelegate: FlutterAppDelegate {
override func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
- return true
+ return false
}
}import 'package:flutter/cupertino.dart';
import 'package:window_manager/window_manager.dart';
class HomePage extends StatefulWidget {
@override
_HomePageState createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> with WindowListener {
@override
void initState() {
super.initState();
windowManager.addListener(this);
_init();
}
@override
void dispose() {
windowManager.removeListener(this);
super.dispose();
}
void _init() async {
// Add this line to override the default close handler
await windowManager.setPreventClose(true);
setState(() {});
}
@override
Widget build(BuildContext context) {
// ...
}
@override
void onWindowClose() async {
bool _isPreventClose = await windowManager.isPreventClose();
if (_isPreventClose) {
showDialog(
context: context,
builder: (_) {
return AlertDialog(
title: Text('Are you sure you want to close this window?'),
actions: [
TextButton(
child: Text('No'),
onPressed: () {
Navigator.of(context).pop();
},
),
TextButton(
child: Text('Yes'),
onPressed: () {
Navigator.of(context).pop();
await windowManager.destroy();
},
),
],
);
},
);
}
}
}Hidden at launch
Change the file linux/my_application.cc as follows:
...
// Implements GApplication::activate.
static void my_application_activate(GApplication* application) {
...
gtk_window_set_default_size(window, 1280, 720);
- gtk_widget_show(GTK_WIDGET(window));
+ gtk_widget_realize(GTK_WIDGET(window));
g_autoptr(FlDartProject) project = fl_dart_project_new();
fl_dart_project_set_dart_entrypoint_arguments(project, self->dart_entrypoint_arguments);
FlView* view = fl_view_new(project);
gtk_widget_show(GTK_WIDGET(view));
gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
fl_register_plugins(FL_PLUGIN_REGISTRY(view));
gtk_widget_grab_focus(GTK_WIDGET(view));
}
...
Change the file macos/Runner/MainFlutterWindow.swift as follows:
import Cocoa
import FlutterMacOS
+import window_manager
class MainFlutterWindow: NSWindow {
override func awakeFromNib() {
let flutterViewController = FlutterViewController.init()
let windowFrame = self.frame
self.contentViewController = flutterViewController
self.setFrame(windowFrame, display: true)
RegisterGeneratedPlugins(registry: flutterViewController)
super.awakeFromNib()
}
+ override public func order(_ place: NSWindow.OrderingMode, relativeTo otherWin: Int) {
+ super.order(place, relativeTo: otherWin)
+ hiddenWindowAtLaunch()
+ }
}
Change the file windows/runner/win32_window.cpp as follows:
bool Win32Window::CreateAndShow(const std::wstring& title,
const Point& origin,
const Size& size) {
...
HWND window = CreateWindow(
- window_class, title.c_str(), WS_OVERLAPPEDWINDOW | WS_VISIBLE,
+ window_class, title.c_str(),
+ WS_OVERLAPPEDWINDOW, // do not add WS_VISIBLE since the window will be shown later
Scale(origin.x, scale_factor), Scale(origin.y, scale_factor),
Scale(size.width, scale_factor), Scale(size.height, scale_factor),
nullptr, nullptr, GetModuleHandle(nullptr), this);Since flutter 3.7 new windows project
Change the file windows/runner/flutter_window.cpp as follows:
bool FlutterWindow::OnCreate() {
...
flutter_controller_->engine()->SetNextFrameCallback([&]() {
- this->Show();
+ "" //delete this->Show()
});Make sure to call setState once on the onWindowFocus event.
import 'package:flutter/cupertino.dart';
import 'package:window_manager/window_manager.dart';
class HomePage extends StatefulWidget {
@override
_HomePageState createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> with WindowListener {
@override
void initState() {
super.initState();
windowManager.addListener(this);
}
@override
void dispose() {
windowManager.removeListener(this);
super.dispose();
}
@override
Widget build(BuildContext context) {
// ...
}
@override
void onWindowFocus() {
// Make sure to call once.
setState(() {});
// do something
}
}
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Wait until ready to show.
Force closing the window.
Try to close the window.
Check if is intercepting the native close signal.
Set if intercept the native close signal. May useful when combine with the onclose event listener. This will also prevent the manually triggered close event.
Focuses on the window.
Removes focus from the window.
Returns bool - Whether window is focused.
Shows and gives focus to the window.
Hides the window.
Returns bool - Whether the window is visible to the user.
Returns bool - Whether the window is maximized.
Maximizes the window. vertically simulates aero snap, only works on Windows
Unmaximizes the window.
Returns bool - Whether the window is minimized.
Minimizes the window. On some platforms the minimized window will be shown in the Dock.
Restores the window from minimized state to its previous state.
Returns bool - Whether the window is in fullscreen mode.
Sets whether the window should be in fullscreen mode.
This will make a window maintain an aspect ratio.
Sets the background color of the window.
Move the window to a position aligned with the screen.
Moves window to the center of the screen.
Returns Rect - The bounds of the window as Object.
Resizes and moves the window to the supplied bounds.
Returns Size - Contains the window's width and height.
Resizes the window to width and height.
Returns Offset - Contains the window's current position.
Moves window to position.
Sets the minimum size of window to width and height.
Sets the maximum size of window to width and height.
Returns bool - Whether the window can be manually resized by the user.
Sets whether the window can be manually resized by the user.
Returns bool - Whether the window can be moved by user.
Sets whether the window can be moved by user.
Returns bool - Whether the window can be manually minimized by the user.
Sets whether the window can be manually minimized by user.
Returns bool - Whether the window can be manually closed by user.
Returns bool - Whether the window can be manually maximized by the user.
Sets whether the window can be manually maximized by the user.
Sets whether the window can be manually closed by user.
Returns bool - Whether the window is always on top of other windows.
Sets whether the window should show always on top of other windows.
Returns bool - Whether the window is always below other windows.
Sets whether the window should show always below other windows.
Returns String - The title of the native window.
Changes the title of native window to title.
Changes the title bar style of native window.
Returns int - The title bar height of the native window.
Returns bool - Whether skipping taskbar is enabled.
Makes the window not show in the taskbar / dock.
Sets progress value in progress bar. Valid range is [0, 1.0].
Sets window/taskbar icon.
Returns bool - Whether the window is visible on all workspaces.
Sets whether the window should be visible on all workspaces.
Note: If you need to support dragging a window on top of a fullscreen window on another screen, you need to modify MainFlutterWindow to inherit from NSPanel
class MainFlutterWindow: NSPanel {
// ...
}Set/unset label on taskbar(dock) app icon
Note that it's required to request access at your AppDelegate.swift like this: UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge])
Returns bool - Whether the window has a shadow. On Windows, always returns true unless window is frameless.
Sets whether the window should have a shadow. On Windows, doesn't do anything unless window is frameless.
Returns double - between 0.0 (fully transparent) and 1.0 (fully opaque).
Sets the opacity of the window.
Sets the brightness of the window.
Makes the window ignore all mouse events.
All mouse events happened in this window will be passed to the window below this window, but if this window has focus, it will still receive keyboard events.
Starts a window drag based on the specified mouse-down event.
Starts a window resize based on the specified mouse-down & mouse-move event.
Grabs the keyboard.
Ungrabs the keyboard.
Emitted when the window is going to be closed.
Emitted when the window gains focus.
Emitted when the window loses focus.
Emitted when window is maximized.
Emitted when the window exits from a maximized state.
Emitted when the window is minimized.
Emitted when the window is restored from a minimized state.
Emitted after the window has been resized.
Emitted once when the window has finished being resized.
Emitted when the window is being moved to a new position.
Emitted once when the window is moved to a new position.
Emitted when the window enters a full-screen state.
Emitted when the window leaves a full-screen state.
Emitted all events.
