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add lifecycle listeners

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This commit is contained in:
Nick Fisher
2023-09-01 12:49:54 +08:00
parent b3a305b4b3
commit b739976c24
3 changed files with 106 additions and 48 deletions
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42
lib/filament_controller.dart
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@@ -23,11 +23,8 @@ class FilamentController {
final _textureIdController = StreamController<int?>.broadcast();
Stream<int?> get textureId => _textureIdController.stream;
final _onInitRequestedController = StreamController.broadcast();
Stream get onInitializationRequested => _onInitRequestedController.stream;
final _initialized = Completer();
Future get initialized => _initialized.future;
// final _viewerAvailableController = StreamController<bool>.broadcast();
// Stream<bool> get viewerAvailable => _viewerAvailableController.stream;
late AssetManager _assetManager;
@@ -45,9 +42,24 @@ class FilamentController {
};
}
final _initialSize = Completer<List<int>>();
void setInitialSize(int width, int height) {
_initialSize.complete([width, height]);
}
///
/// The process for initializing the Filament layer is as follows:
/// 1) Create a FilamentController
/// 2) Insert a FilamentWidget into the rendering tree
/// 3) Initially, this widget will only contain an empty Container. After the first frame is rendered, the widget itself will automatically call [setInitialSize] with the width/height from its constraints
/// 4) Call [initialize], which will create a texture/viewer and notify the FilamentWidget that the texture is available
/// 5) The FilamentWidget will replace the empty Container with the Texture widget.
///
Future initialize() async {
_onInitRequestedController.add(true);
return _initialized.future;
var initialSize = await _initialSize.future;
var initialWidth = initialSize[0];
var initialHeight = initialSize[1];
await createViewer(initialWidth, initialHeight);
}
Future setRendering(bool render) async {
@@ -66,6 +78,17 @@ class FilamentController {
_pixelRatio = ratio;
}
Future destroyViewer() async {
await _channel.invokeMethod("destroyViewer");
}
Future destroyTexture() async {
await _channel.invokeMethod("destroyTexture");
_textureId = null;
_assetManager = 0;
_textureIdController.add(null);
}
Future createViewer(int width, int height) async {
size = ui.Size(width * _pixelRatio, height * _pixelRatio);
_textureId =
@@ -90,7 +113,6 @@ class FilamentController {
await _channel.invokeMethod("updateViewportAndCameraProjection",
[size.width.toInt(), size.height.toInt(), 1.0]);
_initialized.complete(true);
_assetManager = await _channel.invokeMethod("getAssetManager");
_textureIdController.add(_textureId);
}
@@ -438,7 +460,7 @@ class FilamentController {
.invokeMethod("setRotation", [_assetManager, asset, rads, x, y, z]);
}
void hide(FilamentEntity asset, String meshName) async {
Future hide(FilamentEntity asset, String meshName) async {
if (await _channel
.invokeMethod("hideMesh", [_assetManager, asset, meshName]) !=
1) {
@@ -446,7 +468,7 @@ class FilamentController {
}
}
void reveal(FilamentEntity asset, String meshName) async {
Future reveal(FilamentEntity asset, String meshName) async {
if (await _channel
.invokeMethod("revealMesh", [_assetManager, asset, meshName]) !=
1) {