This plugin allows Flutter desktop apps to resizing and repositioning the window.
English | 简体中文
- window_manager
- Platform Support
- Quick Start
- Who's using it?
- API
- WindowManager
- Methods
- destroy
macoswindows - close
- isPreventClose
- setPreventClose
- focus
- blur
macoswindows - isFocused
macoswindows - show
- hide
- isVisible
- isMaximized
- maximize
- unmaximize
- isMinimized
- minimize
- restore
- isFullScreen
- setFullScreen
- setAspectRatio
- setBackgroundColor
- getBounds
- setBounds
- getPosition
- setAlignment
- center
- setPosition
- getSize
- setSize
- setMinimumSize
- setMaximumSize
- isResizable
- setResizable
- isMovable
macos - setMovable
macos - isMinimizable
macoswindows - setMinimizable
macoswindows - isClosable
macoswindows - setClosable
macoswindows - isAlwaysOnTop
- setAlwaysOnTop
- getTitle
- setTitle
- setTitleBarStyle
macoswindows - getTitleBarHeight
macoswindows - setSkipTaskbar
- setProgressBar
macos - hasShadow
macos - setHasShadow
macos - getOpacity
macoswindows - setOpacity
macoswindows - startDragging
- destroy
- Methods
- WindowListener
- WindowManager
- License
| Linux | macOS | Windows |
|---|---|---|
| ✔️ | ✔️ | ✔️ |
Add this to your package's pubspec.yaml file:
dependencies:
window_manager: ^0.1.9Or
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();
// Use it only after calling `hiddenWindowAtLaunch`
windowManager.waitUntilReadyToShow().then((_) async{
// Hide window title bar
await windowManager.setTitleBarStyle('hidden');
await windowManager.setSize(Size(800, 600));
await windowManager.center();
await windowManager.show();
await windowManager.setSkipTaskbar(false);
});
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() {
windowManager.addListener(this);
super.initState();
}
@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() {
windowManager.addListener(this);
_init();
super.initState();
}
@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 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);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() {
windowManager.addListener(this);
super.initState();
}
@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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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.
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.
Returns Rect - The bounds of the window as Object.
Resizes and moves the window to the supplied bounds.
Returns Offset - Contains the window's current position.
Move the window to a position aligned with the screen.
Moves window to the center of the screen.
Moves window to position.
Returns Size - Contains the window's width and height.
Resizes the window to width and height.
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.
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 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.
Makes the window not show in the taskbar / dock.
Sets progress value in progress bar. Valid range is [0, 1.0].
Returns bool - Whether the window has a shadow.
Sets whether the window should have a shadow.
Returns double - between 0.0 (fully transparent) and 1.0 (fully opaque). On Linux, always returns 1.
Sets the opacity of the window.
Starts a window drag based on the specified mouse-down event.
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 when the window is being 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.