feat: rendering windows

lib/logic/display.dart

@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:collection';
 
 import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
@@ -35,10 +36,37 @@ class DisplayManager extends ChangeNotifier {
             case 'map':
               toplevel.sync();
               break;
+            case 'commit':
+              toplevel.notifyListeners();
+              break;
           }
           break;
         case 'notifyToplevel':
-          print(call.arguments);
+          final server = find(call.arguments['name']);
+          if (server == null) break;
+
+          final toplevel = server._toplevels.firstWhere((item) => item.id == call.arguments['id']);
+
+          switch (call.arguments['propName']) {
+            case 'appId':
+              toplevel.appId = call.arguments['propValue'];
+              toplevel.notifyListeners();
+              break;
+            case 'title':
+              toplevel.title = call.arguments['propValue'];
+              toplevel.notifyListeners();
+              break;
+            case 'texture':
+              toplevel.texture = call.arguments['propValue'];
+              toplevel.notifyListeners();
+              break;
+            case 'parent':
+              toplevel._parent = call.arguments['propValue'];
+              toplevel.notifyListeners();
+              break;
+            default:
+              throw MissingPluginException();
+          }
           break;
         default:
           throw MissingPluginException();
@@ -86,6 +114,7 @@ class DisplayServer extends ChangeNotifier {
   final String name;
 
   List<DisplayServerToplevel> _toplevels = [];
+  UnmodifiableListView<DisplayServerToplevel> get toplevels => UnmodifiableListView(_toplevels);
 
   Future<void> stop() async {
     await DisplayManager.channel.invokeMethod('stop', name);
@@ -109,6 +138,7 @@ class DisplayServerToplevel extends ChangeNotifier {
 
   String? appId;
   String? title;
+  int? texture;
 
   int? _parent;
   DisplayServerToplevel? get parent {
@@ -124,7 +154,17 @@ class DisplayServerToplevel extends ChangeNotifier {
 
     appId = data['appId'];
     title = data['title'];
+    texture = data['texture'];
     _parent = data['parent'];
     notifyListeners();
   }
+
+  Future<void> setSize(int width, int height) async {
+    await DisplayManager.channel.invokeMethod('setToplevelSize', <String, dynamic>{
+      'name': _server.name,
+      'id': id,
+      'width': width,
+      'height': height,
+    });
+  }
 }

lib/views/desktop.dart

@@ -11,6 +11,7 @@ import '../logic/wallpaper.dart';
 
 import '../widgets/system_layout.dart';
 import '../widgets/system_navbar.dart';
+import '../widgets/toplevel.dart';
 
 class DesktopView extends StatefulWidget {
   const DesktopView({
@@ -110,8 +111,23 @@ class _DesktopViewState extends State<DesktopView> {
           image: getWallpaper(
             path: (Breakpoints.small.isActive(context) ? widget.mobileWallpaper : widget.desktopWallpaper) ?? widget.wallpaper,
             fallback: AssetImage('assets/wallpaper/${Breakpoints.small.isActive(context) ? 'mobile' : 'desktop'}/default.jpg'),
-          ),
+          )
         ),
+        child: _displayServer != null
+          ? ChangeNotifierProvider(
+              create: (_) => _displayServer!,
+              child: Consumer<DisplayServer>(
+                builder: (context, server, _) =>
+                  Stack(
+                    children: server.toplevels.map(
+                      (toplevel) =>
+                        Toplevel(
+                          toplevel: toplevel,
+                        )
+                    ).toList(),
+                  ),
+              ),
+            ) : null,
       ),
       bottomNavigationBar: Breakpoints.small.isActive(context)
         ? SystemNavbar() : null,

lib/widgets/toplevel.dart

@@ -0,0 +1,48 @@
+import 'package:flutter/scheduler.dart';
+import 'package:libtokyo_flutter/libtokyo.dart' hide ColorScheme;
+import 'package:libtokyo/libtokyo.dart' hide TokyoApp;
+import 'package:provider/provider.dart';
+
+import '../logic/display.dart';
+
+class Toplevel extends StatefulWidget {
+  const Toplevel({
+    super.key,
+    required this.toplevel,
+  });
+
+  final DisplayServerToplevel toplevel;
+
+  @override
+  State<Toplevel> createState() => _ToplevelState();
+}
+
+class _ToplevelState extends State<Toplevel> {
+  GlobalKey key = GlobalKey();
+
+  @override
+  void initState() {
+    super.initState();
+
+    SchedulerBinding.instance.addPostFrameCallback((_) {
+      if (key.currentContext != null && widget.toplevel.texture != null) {
+        final box = key.currentContext!.findRenderObject() as RenderBox;
+        widget.toplevel.setSize(box.size.width.toInt(), box.size.height.toInt());
+      }
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) =>
+    ChangeNotifierProvider(
+      key: key,
+      create: (_) => widget.toplevel,
+      child: Consumer<DisplayServerToplevel>(
+        builder: (context, toplevel, _) =>
+          toplevel.texture == null
+            ? SizedBox() : Texture(
+                textureId: toplevel.texture!,
+              ),
+      ),
+    );
+}

linux/CMakeLists.txt

@@ -121,6 +121,7 @@ add_executable(${BINARY_NAME}
   "channels/display/backend/dummy.c"
   "channels/display/backend/wayland.c"
   "channels/display/backend.c"
+  "channels/display/pixel-format.c"
   "channels/display/texture.c"
   "channels/display/toplevel.c"
   "channels/display.c"

linux/channels/display.c

@@ -200,7 +200,35 @@ static void method_call_handler(FlMethodChannel* channel, FlMethodCall* method_c
       fl_value_set(value, fl_value_new_string("parent"), fl_value_new_null());
     }
 
+    if (toplevel->texture != NULL) {
+      fl_value_set(value, fl_value_new_string("texture"), fl_value_new_int((uintptr_t)FL_TEXTURE(toplevel->texture)));
+    } else {
+      fl_value_set(value, fl_value_new_string("texture"), fl_value_new_null());
+    }
+
     response = FL_METHOD_RESPONSE(fl_method_success_response_new(value));
+  } else if (strcmp(fl_method_call_get_name(method_call), "setToplevelSize") == 0) {
+    FlValue* args = fl_method_call_get_args(method_call);
+    const gchar* name = fl_value_get_string(fl_value_lookup_string(args, "name"));
+    int id = fl_value_get_int(fl_value_lookup_string(args, "id"));
+
+    if (!g_hash_table_contains(self->displays, name)) {
+      fl_method_call_respond_error(method_call, "Linux", "Display server does not exist", NULL, NULL);
+      return;
+    }
+
+    DisplayChannelDisplay* disp = g_hash_table_lookup(self->displays, name);
+
+    if (!g_hash_table_contains(disp->toplevels, &id)) {
+      fl_method_call_respond_error(method_call, "Linux", "Toplevel does not exist", NULL, NULL);
+      return;
+    }
+
+    DisplayChannelToplevel* toplevel = g_hash_table_lookup(disp->toplevels, &id);
+    g_assert(toplevel->id == id);
+
+    wlr_xdg_toplevel_set_size(toplevel->xdg, fl_value_get_int(fl_value_lookup_string(args, "width")), fl_value_get_int(fl_value_lookup_string(args, "height")));
+    response = FL_METHOD_RESPONSE(fl_method_success_response_new(NULL));
   } else {
     response = FL_METHOD_RESPONSE(fl_method_not_implemented_response_new());
   }