perf: remove win32 package native window creation & add platform chan…

…nel impl

lib/channel.dart

@@ -0,0 +1,26 @@
+// This file is a part of dart_vlc (https://github.com/alexmercerind/dart_vlc)
+//
+// Copyright (C) 2021-2022 Hitesh Kumar Saini <[email protected]>
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 3 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with this program; if not, write to the Free Software Foundation,
+// Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+import 'package:flutter/services.dart';
+
+/// Platform channel for using [Texture] & flutter::TextureRegistrar on Windows.
+const channel = MethodChannel('dart_vlc');
+
+const kPlayerRegisterTexture = 'PlayerRegisterTexture';
+const kPlayerUnregisterTexture = 'PlayerUnregisterTexture';
+const kPlayerCreateHWND = 'PlayerCreateHWND';

lib/dart_vlc.dart

@@ -20,21 +20,17 @@
 import 'dart:io';
 import 'dart:typed_data';
 import 'package:flutter/cupertino.dart';
-import 'package:flutter/foundation.dart';
 import 'package:flutter_native_view/flutter_native_view.dart';
 import 'package:path/path.dart' as path;
-import 'package:flutter/services.dart';
 
+import 'package:dart_vlc/channel.dart';
 import 'package:dart_vlc/src/widgets/video.dart';
 import 'package:dart_vlc_ffi/src/internal/ffi.dart' as FFI;
 import 'package:dart_vlc_ffi/dart_vlc_ffi.dart' as FFI;
 export 'package:dart_vlc_ffi/dart_vlc_ffi.dart' hide DartVLC, Player;
 export 'package:dart_vlc/src/widgets/video.dart';
 export 'package:dart_vlc/src/widgets/native_video.dart';
 
-/// Platform channel for using [Texture] & flutter::TextureRegistrar on Windows.
-const _channel = MethodChannel('dart_vlc');
-
 /// A [Player] to open & play a [Media] or [Playlist] from file, network or asset.
 ///
 /// Use [Player] constructor to create a new instance of a [Player].
@@ -73,16 +69,16 @@ class Player extends FFI.Player {
             commandlineArguments: commandlineArguments) {
     () async {
       if (registerTexture) {
-        textureId.value = await _channel
-            .invokeMethod('PlayerRegisterTexture', {'playerId': id});
+        textureId.value = await channel
+            .invokeMethod(kPlayerRegisterTexture, {'playerId': id});
       }
     }();
   }
 
   @override
   void dispose() async {
     if (registerTexture) {
-      await _channel.invokeMethod('PlayerUnregisterTexture', {'playerId': id});
+      await channel.invokeMethod(kPlayerUnregisterTexture, {'playerId': id});
     }
     textureId.value = null;
     super.dispose();

lib/src/widgets/native_video.dart

@@ -17,7 +17,7 @@
 // Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 import 'dart:async';
 
-import 'package:dart_vlc/src/hwnd.dart';
+import 'package:dart_vlc/channel.dart';
 import 'package:flutter/material.dart';
 
 import 'package:dart_vlc/dart_vlc.dart';
@@ -169,15 +169,22 @@ class _NativeVideoState extends State<NativeVideo> {
   @override
   void initState() {
     super.initState();
-    createHWND().then((handle) {
-      widget.player.setHWND(handle);
-      setState(() {
-        controller = NativeViewController(
-          handle: handle,
-          hitTestBehavior: HitTestBehavior.opaque,
-        );
-      });
-    });
+    channel.invokeMethod(
+      kPlayerCreateHWND,
+      {
+        'playerId': playerId,
+      },
+    ).then(
+      (handle) {
+        widget.player.setHWND(handle);
+        setState(() {
+          controller = NativeViewController(
+            handle: handle,
+            hitTestBehavior: HitTestBehavior.opaque,
+          );
+        });
+      },
+    );
     if (widget.showControls) {
       controls[playerId] = controlKey;
     }

lib/src/widgets/video.dart

@@ -189,7 +189,7 @@ abstract class _VideoStateBase extends State<Video>
     return Container(
       width: widget.width ?? double.infinity,
       height: widget.height ?? double.infinity,
-      color: Colors.black,
+      color: Colors.transparent,
       child: widget.showControls
           ? Control(
               key: controlKey,