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make ThermionFlutterPlugin static, remove dispose() and add internal listener for ThermionViewer.onDispose

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This commit is contained in:
Nick Fisher
2024-06-19 12:57:16 +08:00
parent 8e75555540
commit 31e68df1c5
2 changed files with 90 additions and 89 deletions
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88
thermion_flutter/thermion_flutter_ffi/lib/thermion_flutter_ffi.dart
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@@ -6,21 +6,24 @@ import 'package:thermion_flutter_platform_interface/thermion_flutter_platform_in
import 'package:thermion_flutter_platform_interface/thermion_flutter_texture.dart';
///
/// A subclass of [ThermionViewerFFI] that uses Flutter platform channels
/// to create rendering contexts, callbacks and surfaces (either backing texture(s).
/// An implementation of [ThermionFlutterPlatform] that uses a Flutter platform
/// channel to create a rendering context, resource loaders, and
/// render target(s).
///
class ThermionFlutterFFI extends ThermionFlutterPlatform {
final _channel = const MethodChannel("dev.thermion.flutter/event");
late final ThermionViewerFFI viewer;
ThermionViewerFFI? _viewer;
ThermionFlutterFFI._() {}
static void registerWith() {
ThermionFlutterPlatform.instance = ThermionFlutterFFI();
ThermionFlutterPlatform.instance = ThermionFlutterFFI._();
}
final _textures = <ThermionFlutterTexture>{};
Future initialize({String? uberArchivePath}) async {
Future<ThermionViewer> createViewer({String? uberArchivePath}) async {
var resourceLoader = Pointer<Void>.fromAddress(
await _channel.invokeMethod("getResourceLoaderWrapper"));
@@ -46,22 +49,24 @@ class ThermionFlutterFFI extends ThermionFlutterPlatform {
? nullptr
: Pointer<Void>.fromAddress(sharedContext);
viewer = ThermionViewerFFI(
_viewer = ThermionViewerFFI(
resourceLoader: resourceLoader,
renderCallback: renderCallback,
renderCallbackOwner: renderCallbackOwner,
driver: driverPtr,
sharedContext: sharedContextPtr,
uberArchivePath: uberArchivePath);
await viewer.initialized;
await _viewer!.initialized;
return _viewer!;
}
bool _creatingTexture = false;
bool _destroyingTexture = false;
Future _waitForTextureCreationToComplete() async {
var iter = 0;
while (_creatingTexture) {
while (_creatingTexture || _destroyingTexture) {
await Future.delayed(Duration(milliseconds: 50));
iter++;
if (iter > 10) {
@@ -125,39 +130,43 @@ class ThermionFlutterFFI extends ThermionFlutterPlatform {
print(
"Created texture with flutter texture id ${flutterTextureId}, hardwareTextureId $hardwareTextureId and surfaceAddress $surfaceAddress");
viewer.viewportDimensions = (width.toDouble(), height.toDouble());
_viewer?.viewportDimensions = (width.toDouble(), height.toDouble());
final texture = ThermionFlutterTexture(
flutterTextureId, hardwareTextureId, width, height, surfaceAddress);
flutterTextureId, hardwareTextureId, width, height, surfaceAddress);
await viewer.createSwapChain(width.toDouble(), height.toDouble(),
surface: texture.surfaceAddress == null
? nullptr
: Pointer<Void>.fromAddress(texture.surfaceAddress!));
await _viewer?.createSwapChain(width.toDouble(), height.toDouble(),
surface: texture.surfaceAddress == null
? nullptr
: Pointer<Void>.fromAddress(texture.surfaceAddress!));
if (texture.hardwareTextureId != null) {
print("Creating render target");
// ignore: unused_local_variable
var renderTarget = await viewer.createRenderTarget(
width.toDouble(), height.toDouble(), texture.hardwareTextureId!);
var renderTarget = await _viewer?.createRenderTarget(
width.toDouble(), height.toDouble(), texture.hardwareTextureId!);
}
await viewer.updateViewportAndCameraProjection(
width.toDouble(), height.toDouble());
viewer.render();
await _viewer?.updateViewportAndCameraProjection(width.toDouble(), height.toDouble());
_viewer?.render();
_creatingTexture = false;
_textures.add(texture);
return texture;
}
///
/// Called by [ThermionWidget] to destroy a texture. Don't call this yourself.
/// Destroy a texture and clean up the texture cache (if applicable).
///
Future destroyTexture(ThermionFlutterTexture texture) async {
await _channel.invokeMethod("destroyTexture", texture.flutterTextureId);
if (_creatingTexture || _destroyingTexture) {
throw Exception("Cannot destroy texture while concurrent call to createTexture/destroyTexture has not completed");
}
_destroyingTexture = true;
_textures.remove(texture);
await _channel.invokeMethod("destroyTexture", texture.flutterTextureId);
_destroyingTexture = false;
}
bool _resizing = false;
@@ -172,14 +181,14 @@ class ThermionFlutterFFI extends ThermionFlutterPlatform {
throw Exception("Resize underway");
}
if ((width - viewer.viewportDimensions.$1).abs() < 0.001 ||
(height - viewer.viewportDimensions.$2).abs() < 0.001) {
if ((width - _viewer!.viewportDimensions.$1).abs() < 0.001 ||
(height - _viewer!.viewportDimensions.$2).abs() < 0.001) {
return texture;
}
_resizing = true;
bool wasRendering = viewer.rendering;
await viewer.setRendering(false);
await viewer.destroySwapChain();
bool wasRendering = _viewer!.rendering;
await _viewer!.setRendering(false);
await _viewer!.destroySwapChain();
await destroyTexture(texture);
var result = await _channel
@@ -188,34 +197,29 @@ class ThermionFlutterFFI extends ThermionFlutterPlatform {
if (result == null || result[0] == -1) {
throw Exception("Failed to create texture");
}
viewer.viewportDimensions = (width.toDouble(), height.toDouble());
_viewer!.viewportDimensions = (width.toDouble(), height.toDouble());
var newTexture =
ThermionFlutterTexture(result[0], result[1], width, height, result[2]);
await viewer.createSwapChain(width.toDouble(), height.toDouble(),
await _viewer!.createSwapChain(width.toDouble(), height.toDouble(),
surface: newTexture.surfaceAddress == null
? nullptr
: Pointer<Void>.fromAddress(newTexture.surfaceAddress!));
if (newTexture.hardwareTextureId != null) {
// ignore: unused_local_variable
var renderTarget = await viewer.createRenderTarget(
var renderTarget = await _viewer!.createRenderTarget(
width.toDouble(), height.toDouble(), newTexture.hardwareTextureId!);
}
await viewer.updateViewportAndCameraProjection(
width.toDouble(), height.toDouble());
await _viewer!
.updateViewportAndCameraProjection(width.toDouble(), height.toDouble());
viewer.viewportDimensions = (width.toDouble(), height.toDouble());
_viewer!.viewportDimensions = (width.toDouble(), height.toDouble());
if (wasRendering) {
await viewer.setRendering(true);
await _viewer!.setRendering(true);
}
_textures.add(newTexture);
_resizing = false;
return newTexture;
}
@override
void dispose() {
// TODO: implement dispose
}
}