notas/lib/widgets/app_title_bar_io.dart

import 'package:flutter/material.dart';
import 'package:notas/platform/app_platform.dart';
import 'package:window_manager/window_manager.dart';

class AppTitleBar extends StatelessWidget {
  const AppTitleBar({
    super.key,
  });

  @override
  Widget build(BuildContext context) {
    if (isAndroid || isIOS) {
      return const SizedBox(height: 10);
    }

    if (isMacOS) {
      return SizedBox(
        height: 28,
        child: Center(
          child: Row(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              const Text(
                'Mis Notas',
                style: TextStyle(color: Colors.white70, fontSize: 13),
              ),
            ],
          ),
        ),
      );
    }

    if (isLinux) {
      return const _KdeTitleBar();
    }

    return SizedBox(
      height: 40,
      child: WindowCaption(
        brightness: Brightness.dark,
        title: Row(
          mainAxisSize: MainAxisSize.min,
          children: [
            const Text('Mis Notas', style: TextStyle(color: Colors.white)),
          ],
        ),
      ),
    );
  }
}

class _KdeTitleBar extends StatefulWidget {
  const _KdeTitleBar();

  @override
  State<_KdeTitleBar> createState() => _KdeTitleBarState();
}

class _KdeTitleBarState extends State<_KdeTitleBar> with WindowListener {
  bool _isFullScreen = false;
  bool _isMaximized = false;

  @override
  void initState() {
    super.initState();
    if (isDesktop) {
      windowManager.addListener(this);
      _refreshWindowState();
    }
  }

  @override
  void dispose() {
    if (isDesktop) {
      windowManager.removeListener(this);
    }
    super.dispose();
  }

  Future<void> _refreshWindowState() async {
    final bool isFullScreen = await windowManager.isFullScreen();
    final bool isMaximized = await windowManager.isMaximized();

    if (!mounted) {
      return;
    }

    setState(() {
      _isFullScreen = isFullScreen;
      _isMaximized = isMaximized;
    });
  }

  @override
  void onWindowEnterFullScreen() {
    setState(() {
      _isFullScreen = true;
    });
  }

  @override
  void onWindowLeaveFullScreen() {
    setState(() {
      _isFullScreen = false;
    });
  }

  @override
  void onWindowMaximize() {
    setState(() {
      _isMaximized = true;
    });
  }

  @override
  void onWindowUnmaximize() {
    setState(() {
      _isMaximized = false;
    });
  }

  @override
  Widget build(BuildContext context) {
    final IconData maximizeIcon =
        (_isFullScreen || _isMaximized) ? Icons.fullscreen_exit : Icons.fullscreen;

    return Container(
      decoration: BoxDecoration(
        border: Border(
          bottom: BorderSide(
            color: Colors.white.withValues(alpha: 0.12),
            width: 0.5,
          ),
        ),
      ),
      child: SizedBox(
        height: 32,
        child: Stack(
          children: [
            const DragToMoveArea(
              child: SizedBox.expand(),
            ),
            const IgnorePointer(
              child: Center(
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    Text(
                      'Mis Notas',
                      style: TextStyle(
                        color: Color.fromARGB(255, 163, 163, 163),
                        fontSize: 14,
                        fontWeight: FontWeight.w500,
                      ),
                    ),
                  ],
                ),
              ),
            ),
            Positioned(
              right: 0,
              top: 0,
              bottom: 0,
              child: Row(
                mainAxisSize: MainAxisSize.min,
                crossAxisAlignment: CrossAxisAlignment.stretch,
                children: [
                  _KdeButton(
                    icon: Icons.minimize,
                    onPressed: () => windowManager.minimize(),
                  ),
                  _KdeButton(
                    icon: maximizeIcon,
                    onPressed: () async {
                      if (await windowManager.isFullScreen()) {
                        await windowManager.setFullScreen(false);
                      } else if (await windowManager.isMaximized()) {
                        await windowManager.unmaximize();
                      } else {
                        await windowManager.maximize();
                      }
                    },
                  ),
                  _KdeButton(
                    icon: Icons.close,
                    isClose: true,
                    onPressed: () => windowManager.close(),
                  ),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }
}

class _KdeButton extends StatelessWidget {
  const _KdeButton({
    required this.icon,
    required this.onPressed,  
    this.isClose = false,
  });

  final IconData icon;
  final VoidCallback onPressed;
  final bool isClose;

  @override
  Widget build(BuildContext context) {
    return MouseRegion(
      cursor: SystemMouseCursors.click,
      child: GestureDetector(
        behavior: HitTestBehavior.opaque,
        onTap: onPressed,
        child: SizedBox(
          width: 32,
          height: double.infinity,
          child: Material(
            color: Colors.transparent,
            child: InkResponse(
              highlightShape: BoxShape.circle,
              containedInkWell: false,
              radius: 10,
              hoverColor: isClose ? Colors.red : Colors.white.withValues(alpha: 0.08),
              onTap: onPressed,
              child: Center(
                child: Icon(
                  icon,
                  color: Colors.white70,
                  size: 16,
                ),
              ),
            ),
          ),
        ),
      ),
    );
  }
}