apidash/lib/services/window_services.dart

import 'dart:math' as math;
import 'package:flutter/material.dart';
import 'package:window_size/window_size.dart' as window_size;
import 'package:window_manager/window_manager.dart';
import '../consts.dart';

Future<void> setupInitialWindow({Size? sz}) async {
  if (kIsDesktop) {
    await window_size.getWindowInfo().then((window) {
      final screen = window.screen;
      if (screen != null) {
        final screenFrame = screen.visibleFrame;
        double width, height;
        if (sz == null) {
          width = math.max(
              (screenFrame.width / 2).roundToDouble(), kMinInitialWindowWidth);
          height = math.max((screenFrame.height / 2).roundToDouble(),
              kMinInitialWindowHeight);
        } else {
          width = sz.width;
          height = sz.height;
        }
        final left = ((screenFrame.width - width) / 2).roundToDouble();
        final top = ((screenFrame.height - height) / 3).roundToDouble();
        final frame = Rect.fromLTWH(left, top, width, height);
        window_size.setWindowFrame(frame);
        window_size.setWindowMinSize(kMinWindowSize);
        window_size.setWindowMaxSize(Size.infinite);
        window_size.setWindowTitle(kWindowTitle);
      }
    });
  }
}

Future<void> resetWindowSize() async {
  await setupWindow(center: true);
}

Future<void> setupWindow({Size? sz, Offset? off, bool center = false}) async {
  if (kIsDesktop) {
    double width = kMinInitialWindowWidth, height = kMinInitialWindowHeight;
    if (sz == null) {
      await window_size.getWindowInfo().then((window) {
        final screen = window.screen;
        if (screen != null) {
          final screenFrame = screen.visibleFrame;
          width = math.max(
              (screenFrame.width / 2).roundToDouble(), kMinInitialWindowWidth);
          height = math.max((screenFrame.height / 2).roundToDouble(),
              kMinInitialWindowHeight);
        }
      });
    } else {
      width = sz.width;
      height = sz.height;
    }

    await windowManager.ensureInitialized();
    WindowOptions windowOptions = WindowOptions(
      size: Size(width, height),
      center: center,
      minimumSize: kMinWindowSize,
      skipTaskbar: false,
      title: kWindowTitle,
      titleBarStyle: kIsMacOS || kIsWindows ? TitleBarStyle.hidden : null,
    );
    if (off != null) {
      await windowManager.setPosition(off);
    }
    await windowManager.waitUntilReadyToShow(windowOptions, () async {
      await windowManager.show();
      await windowManager.focus();
    });
  }
}