refactor: rename ThermionFlutterTexture->PlatformTextureDescriptor

thermion_flutter/thermion_flutter/lib/src/widgets/src/thermion_texture_widget.dart

@@ -40,7 +40,8 @@ class ThermionTextureWidget extends StatefulWidget {
 }
 
 class _ThermionTextureWidgetState extends State<ThermionTextureWidget> {
-  ThermionFlutterTexture? _texture;
+  
+  PlatformTextureDescriptor? _texture;
 
   static final _views = <t.View>[];
 
@@ -51,7 +52,7 @@ class _ThermionTextureWidgetState extends State<ThermionTextureWidget> {
     super.dispose();
     _views.remove(widget.view);
     if(_texture != null) {
-      ThermionFlutterPlatform.instance.destroyTexture(_texture!);
+      ThermionFlutterPlatform.instance.destroyTextureDescriptor(_texture!);
     }
 
     _states.remove(this);
@@ -111,7 +112,7 @@ class _ThermionTextureWidgetState extends State<ThermionTextureWidget> {
           setState(() {});
         }
         if(texture != null) {
-          ThermionFlutterPlatform.instance.destroyTexture(texture);
+          ThermionFlutterPlatform.instance.destroyTextureDescriptor(texture);
         }
 
         _views.clear();
@@ -228,8 +229,8 @@ class _ThermionTextureWidgetState extends State<ThermionTextureWidget> {
         child: Stack(children: [
           Positioned.fill(
               child: Texture(
-            key: ObjectKey("flutter_texture_${_texture!.flutterId}"),
-            textureId: _texture!.flutterId,
+            key: ObjectKey("flutter_texture_${_texture!.flutterTextureId}"),
+            textureId: _texture!.flutterTextureId,
             filterQuality: FilterQuality.none,
             freeze: false,
           ))

thermion_flutter/thermion_flutter_method_channel/lib/src/thermion_flutter_method_channel_platform.dart

@@ -2,6 +2,7 @@ import 'dart:async';
 import 'dart:ffi';
 import 'dart:async';
 import 'dart:io';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
 import 'package:thermion_dart/thermion_dart.dart';
 import 'package:thermion_dart/thermion_dart.dart' as t;
@@ -84,7 +85,7 @@ class ThermionFlutterMethodChannelPlatform extends ThermionFlutterPlatform {
     return viewer!;
   }
 
-  Future<PlatformTextureDescriptor?> createTexture(
+  Future<PlatformTextureDescriptor> createTextureDescriptor(
       int width, int height) async {
     var result =
         await channel.invokeMethod("createTexture", [width, height, 0, 0]);
@@ -95,33 +96,22 @@ class ThermionFlutterMethodChannelPlatform extends ThermionFlutterPlatform {
     final hardwareId = result[1] as int;
     var window = result[2] as int?; // usually 0 for nullptr
 
-    return (
-      flutterTextureId: flutterId,
-      hardwareId: hardwareId,
-      windowHandle: window
-    );
+    return PlatformTextureDescriptor(flutterId, hardwareId, window, width, height);
+      
+  }
+
+  @override
+  Future destroyTextureDescriptor(PlatformTextureDescriptor descriptor) async {
+    await channel.invokeMethod("destroyTexture", descriptor.flutterTextureId);
   }
 
   ///
   ///
   ///
-  Future<ThermionFlutterTexture?> createTextureAndBindToView(
+  Future<PlatformTextureDescriptor?> createTextureAndBindToView(
       t.View view, int width, int height) async {
-    var result =
-        await channel.invokeMethod("createTexture", [width, height, 0, 0]);
-    if (result == null || (result[0] == -1)) {
-      throw Exception("Failed to create texture");
-    }
-    final flutterId = result[0] as int;
-    final hardwareId = result[1] as int;
-    var window = result[2] as int?; // usually 0 for nullptr
-
-    var texture = ThermionFlutterTexture(
-        flutterId: flutterId,
-        hardwareId: hardwareId,
-        height: height,
-        width: width,
-        window: window ?? 0);
+    var descriptor = await createTextureDescriptor(width, height);
+    
 
     if (Platform.isWindows) {
       if (_swapChain != null) {
@@ -130,43 +120,38 @@ class ThermionFlutterMethodChannelPlatform extends ThermionFlutterPlatform {
       }
 
       _swapChain =
-          await viewer!.createHeadlessSwapChain(texture.width, texture.height);
+          await viewer!.createHeadlessSwapChain(descriptor.width, descriptor.height);
     } else if (Platform.isAndroid) {
       if (_swapChain != null) {
         await view.setRenderable(false, _swapChain!);
         await viewer!.destroySwapChain(_swapChain!);
       }
-      _swapChain = await viewer!.createSwapChain(texture.window);
+      _swapChain = await viewer!.createSwapChain(descriptor.windowHandle!);
     } else {
       var renderTarget = await viewer!.createRenderTarget(
-          texture.width, texture.height, texture.hardwareId);
+          descriptor.width, descriptor.height, descriptor.hardwareId);
 
       await view.setRenderTarget(renderTarget!);
     }
     await view.setRenderable(true, _swapChain!);
 
-    return texture;
+    return descriptor;
   }
 
   @override
-  Future destroyTexture(ThermionFlutterTexture texture) async {
-    await channel.invokeMethod("destroyTexture", texture.flutterId);
+  Future markTextureFrameAvailable(PlatformTextureDescriptor texture) async {
+    await channel.invokeMethod("markTextureFrameAvailable", texture.flutterTextureId);
   }
 
   @override
-  Future markTextureFrameAvailable(ThermionFlutterTexture texture) async {
-    await channel.invokeMethod("markTextureFrameAvailable", texture.flutterId);
-  }
-
-  @override
-  Future<ThermionFlutterTexture> resizeTexture(ThermionFlutterTexture texture,
+  Future<PlatformTextureDescriptor> resizeTexture(PlatformTextureDescriptor texture,
       t.View view, int width, int height) async {
     var newTexture = await createTextureAndBindToView(view, width, height);
     if (newTexture == null) {
       throw Exception();
     }
 
-    await destroyTexture(texture);
+    await destroyTextureDescriptor(texture);
 
     return newTexture;
   }

thermion_flutter/thermion_flutter_platform_interface/lib/thermion_flutter_platform_interface.dart

@@ -12,8 +12,7 @@ class ThermionFlutterOptions {
   const ThermionFlutterOptions.empty() : uberarchivePath = null;
 }
 
-typedef PlatformTextureDescriptor = (
-    {int flutterTextureId, int hardwareId, int? windowHandle}) ;
+
 
 abstract class ThermionFlutterPlatform extends PlatformInterface {
   ThermionFlutterPlatform() : super(token: _token);
@@ -40,7 +39,12 @@ abstract class ThermionFlutterPlatform extends PlatformInterface {
   /// This is internal; unless you are [thermion_*] package developer, don't
   /// call this yourself. May not be supported on all platforms.
   ///
-  Future<PlatformTextureDescriptor?> createTexture(int width, int height);
+  Future<PlatformTextureDescriptor> createTextureDescriptor(int width, int height);
+
+  ///
+  /// Destroys a raw rendering surface.
+  ///
+  Future destroyTextureDescriptor(PlatformTextureDescriptor descriptor);
 
   ///
   /// Create a rendering surface and binds to the given [View]
@@ -48,23 +52,19 @@ abstract class ThermionFlutterPlatform extends PlatformInterface {
   /// This is internal; unless you are [thermion_*] package developer, don't
   /// call this yourself. May not be supported on all platforms.
   ///
-  Future<ThermionFlutterTexture?> createTextureAndBindToView(
+  Future<PlatformTextureDescriptor?> createTextureAndBindToView(
       t.View view, int width, int height);
 
   ///
   ///
   ///
   ///
-  Future<ThermionFlutterTexture?> resizeTexture(
-      ThermionFlutterTexture texture, t.View view, int width, int height);
+  Future<PlatformTextureDescriptor?> resizeTexture(
+      PlatformTextureDescriptor texture, t.View view, int width, int height);
+
 
   ///
   ///
   ///
-  Future destroyTexture(ThermionFlutterTexture texture);
-
-  ///
-  ///
-  ///
-  Future markTextureFrameAvailable(ThermionFlutterTexture texture);
+  Future markTextureFrameAvailable(PlatformTextureDescriptor texture);
 }

thermion_flutter/thermion_flutter_platform_interface/lib/thermion_flutter_texture.dart

@@ -1,13 +1,10 @@
-class ThermionFlutterTexture {
-
+class PlatformTextureDescriptor {
+  final int flutterTextureId;
+  final int hardwareId;
+  final int? windowHandle;
   final int width;
   final int height;
 
-  final int flutterId;
-  final int hardwareId;
-
-  final int window;
-
-  ThermionFlutterTexture({required this.width, required this.height, required this.flutterId, required this.hardwareId, required this.window});
-
+  PlatformTextureDescriptor(this.flutterTextureId, this.hardwareId, this.windowHandle, this.width, this.height);
 }
+

thermion_flutter/thermion_flutter_web/lib/thermion_flutter_web.dart

@@ -14,7 +14,7 @@ class ThermionFlutterWebPlugin extends ThermionFlutterPlatform {
   }
 
   @override
-  Future<ThermionFlutterTexture?> createTexture(double width, double height,
+  Future<PlatformTextureDescriptor?> createTexture(double width, double height,
       double offsetLeft, double offsetTop, double pixelRatio) async {
     await _viewer!.destroySwapChain();
     await _viewer!.createSwapChain(width.ceil(), height.ceil());
@@ -33,16 +33,16 @@ class ThermionFlutterWebPlugin extends ThermionFlutterPlatform {
     _viewer!
         .updateViewportAndCameraProjection(width.ceil(), height.ceil(), 1.0);
 
-    return ThermionFlutterTexture(null, null, 0, 0, null);
+    return PlatformTextureDescriptor(null, null, 0, 0, null);
   }
 
   @override
-  Future destroyTexture(ThermionFlutterTexture texture) async {
+  Future destroyTexture(PlatformTextureDescriptor texture) async {
     // noop
   }
 
   @override
-  Future<ThermionFlutterTexture?> resizeTexture(ThermionFlutterTexture texture,
+  Future<PlatformTextureDescriptor?> resizeTexture(PlatformTextureDescriptor texture,
       int width, int height, int offsetLeft, int offsetTop, double pixelRatio) async {
     final canvas = document.getElementById("canvas") as HTMLCanvasElement;
     canvas.width = width;
@@ -54,7 +54,7 @@ class ThermionFlutterWebPlugin extends ThermionFlutterPlatform {
     (canvas as HTMLElement).style.top =
         (offsetTop * pixelRatio).ceil().toString();
     _viewer!.updateViewportAndCameraProjection(width, height, 1.0);
-    return ThermionFlutterTexture(null, null, 0, 0, null);
+    return PlatformTextureDescriptor(null, null, 0, 0, null);
   }
 
   Future<ThermionViewer> createViewerWithOptions(