bitsdojo_window #

A Flutter package that makes it easy to customize and work with your Flutter desktop app window on both Windows and macOS .

Watch the tutorial to get started. Click the image below to watch the video:

Features:

- Custom window frame - remove standard Windows/macOS titlebar and buttons
- Hide window on startup
- Show/hide window
- Move window using Flutter widget
- Minimize/Maximize/Restore/Close window
- Set window size, minimum size and maximum size
- Set window position
- Set window alignment on screen (center/topLeft/topRight/bottomLeft/bottomRight)
- Set window title

Currently working with Flutter desktop apps for Windows and macOS. Linux support is also planned in the future.

Getting Started #

Install the package using pubspec.yaml

For Windows apps #

Inside your application folder, go to windows\runner\main.cpp and add these two lines at the beginning of the file:

#include <bitsdojo_window_windows/bitsdojo_window_plugin.h>
auto bdw = bitsdojo_window_configure(BDW_CUSTOM_FRAME | BDW_HIDE_ON_STARTUP);

For macOS apps #

Inside your application folder, go to macos\runner\MainFlutterWindow.swift and add this line after the one saying import FlutterMacOS :

import FlutterMacOS
import bitsdojo_window_macos // Add this line

Then change this line from:

class MainFlutterWindow: NSWindow {

to this:

class MainFlutterWindow: BitsdojoWindow {

After changing NSWindow to BitsdojoWindow add these lines below the line you changed:

override func bitsdojo_window_configure() -> UInt {
  return BDW_CUSTOM_FRAME | BDW_HIDE_ON_STARTUP
}

Your code should now look like this:

class MainFlutterWindow: BitsdojoWindow {
    
  override func bitsdojo_window_configure() -> UInt {
    return BDW_CUSTOM_FRAME | BDW_HIDE_ON_STARTUP
  }
    
  override func awakeFromNib() {
    ... //rest of your code

#

If you don't want to use a custom frame and prefer the standard window titlebar and buttons, you can remove the BDW_CUSTOM_FRAME flag from the code above.

If you don't want to hide the window on startup, you can remove the BDW_HIDE_ON_STARTUP flag from the code above.

Flutter app integration #

Now go to lib\main.dart and add this code in the main function right after runApp(MyApp()); :

void main() {
  runApp(MyApp());

  // Add this code below

  doWhenWindowReady(() {
    final initialSize = Size(600, 450);
    appWindow.minSize = initialSize;
    appWindow.size = initialSize;
    appWindow.alignment = Alignment.center;
    appWindow.show();
  });
}

This will set an initial size and a minimum size for your application window, center it on the screen and show it on the screen.

You can find examples in the example folder.

Here is an example that displays this window:

import 'package:flutter/material.dart';
import 'package:bitsdojo_window/bitsdojo_window.dart';

void main() {
  runApp(MyApp());
  doWhenWindowReady(() {
    final win = appWindow;
    final initialSize = Size(600, 450);
    win.minSize = initialSize;
    win.size = initialSize;
    win.alignment = Alignment.center;
    win.title = "Custom window with Flutter";
    win.show();
  });
}

const borderColor = Color(0xFF805306);

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        debugShowCheckedModeBanner: false,
        home: Scaffold(
            body: WindowBorder(
                color: borderColor,
                width: 1,
                child: Row(children: [LeftSide(), RightSide()]))));
  }
}

const sidebarColor = Color(0xFFF6A00C);

class LeftSide extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return SizedBox(
        width: 200,
        child: Container(
            color: sidebarColor,
            child: Column(
              children: [
                WindowTitleBarBox(child: MoveWindow()),
                Expanded(child: Container())
              ],
            )));
  }
}

const backgroundStartColor = Color(0xFFFFD500);
const backgroundEndColor = Color(0xFFF6A00C);

class RightSide extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Expanded(
        child: Container(
            decoration: BoxDecoration(
              gradient: LinearGradient(
                  begin: Alignment.topCenter,
                  end: Alignment.bottomCenter,
                  colors: [backgroundStartColor, backgroundEndColor],
                  stops: [0.0, 1.0]),
            ),
            child: Column(children: [
              WindowTitleBarBox(
                  child: Row(children: [
                Expanded(child: MoveWindow()),
                WindowButtons()
              ])),
            ])));
  }
}

final buttonColors = WindowButtonColors(
    iconNormal: Color(0xFF805306),
    mouseOver: Color(0xFFF6A00C),
    mouseDown: Color(0xFF805306),
    iconMouseOver: Color(0xFF805306),
    iconMouseDown: Color(0xFFFFD500));

final closeButtonColors = WindowButtonColors(
    mouseOver: Color(0xFFD32F2F),
    mouseDown: Color(0xFFB71C1C),
    iconNormal: Color(0xFF805306),
    iconMouseOver: Colors.white);

class WindowButtons extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Row(
      children: [
        MinimizeWindowButton(colors: buttonColors),
        MaximizeWindowButton(colors: buttonColors),
        CloseWindowButton(colors: closeButtonColors),
      ],
    );

TODO: More docs coming soon