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move texture ID to stream on FilamentController

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This commit is contained in:
Nick Fisher
2022-12-20 11:31:14 +08:00
parent 19fcc8ac53
commit 357b2b0b7c
2 changed files with 40 additions and 30 deletions
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16
lib/filament_controller.dart
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@@ -13,7 +13,7 @@ typedef FilamentLight = int;
abstract class FilamentController { abstract class FilamentController {
Size get size; Size get size;
late int textureId; late Stream<int> textureId;
Future get initialized; Future get initialized;
Stream get onInitializationRequested; Stream get onInitializationRequested;
Future initialize(); Future initialize();
@@ -102,7 +102,10 @@ class PolyvoxFilamentController extends FilamentController {
double _pixelRatio = 1.0; double _pixelRatio = 1.0;
Size size = Size(0, 0); Size size = Size(0, 0);
final _onInitRequestedController = StreamController(); final _textureIdController = StreamController<int>();
Stream<int> get textureId => _textureIdController.stream;
final _onInitRequestedController = StreamController.broadcast();
Stream get onInitializationRequested => _onInitRequestedController.stream; Stream get onInitializationRequested => _onInitRequestedController.stream;
final _initialized = Completer(); final _initialized = Completer();
@@ -139,16 +142,21 @@ class PolyvoxFilamentController extends FilamentController {
Future createTextureViewer(int width, int height) async { Future createTextureViewer(int width, int height) async {
size = Size(width * _pixelRatio, height * _pixelRatio); size = Size(width * _pixelRatio, height * _pixelRatio);
textureId = print("Creating texture of size $size");
var textureId =
await _channel.invokeMethod("initialize", [size.width, size.height]); await _channel.invokeMethod("initialize", [size.width, size.height]);
_textureIdController.add(textureId);
_initialized.complete(true); _initialized.complete(true);
} }
Future resize(int width, int height, Future resize(int width, int height,
{double contentScaleFactor = 1.0}) async { {double contentScaleFactor = 1.0}) async {
size = Size(width * _pixelRatio, height * _pixelRatio); size = Size(width * _pixelRatio, height * _pixelRatio);
textureId = await _channel.invokeMethod("resize",
var textureId = await _channel.invokeMethod("resize",
[width * _pixelRatio, height * _pixelRatio, contentScaleFactor]); [width * _pixelRatio, height * _pixelRatio, contentScaleFactor]);
print("Resized to $size with texutre Id $textureId");
_textureIdController.add(textureId);
} }
@override @override

54
lib/filament_widget.dart
View File

@@ -55,15 +55,11 @@ class FilamentWidget extends StatefulWidget {
} }
class _FilamentWidgetState extends State<FilamentWidget> { class _FilamentWidgetState extends State<FilamentWidget> {
bool _ready = false;
StreamSubscription? _listener; StreamSubscription? _listener;
@override @override
void initState() { void initState() {
_listener = widget.controller.onInitializationRequested.listen((_) { _listener = widget.controller.onInitializationRequested.listen((_) {
if (_ready) {
return;
}
WidgetsBinding.instance.addPostFrameCallback((timeStamp) async { WidgetsBinding.instance.addPostFrameCallback((timeStamp) async {
var size = ((context.findRenderObject()) as RenderBox).size; var size = ((context.findRenderObject()) as RenderBox).size;
print( print(
@@ -71,13 +67,9 @@ class _FilamentWidgetState extends State<FilamentWidget> {
await widget.controller await widget.controller
.createTextureViewer(size.width.toInt(), size.height.toInt()); .createTextureViewer(size.width.toInt(), size.height.toInt());
print("Filament texture/viewer created."); print("Filament texture/viewer created.");
setState(() {
_ready = true;
});
_listener!.cancel(); _listener!.cancel();
_listener = null; _listener = null;
}); });
// we need to make sure a new frame is requested, otherwise the callback may not run
setState(() {}); setState(() {});
}); });
@@ -91,23 +83,33 @@ class _FilamentWidgetState extends State<FilamentWidget> {
@override @override
Widget build(BuildContext context) { Widget build(BuildContext context) {
if (!_ready) { return StreamBuilder(
return Container(); stream: widget.controller.textureId,
} builder: (ctx, AsyncSnapshot<int> textureId) {
var texture = Texture( if (textureId.data == null) {
textureId: widget.controller.textureId, return Container();
filterQuality: FilterQuality.high, }
);
return ResizeObserver( var texture = Texture(
onResized: (Size oldSize, Size newSize) async { key: ObjectKey("texture_${textureId.data}"),
await widget.controller textureId: textureId.data!,
.resize(newSize.width.toInt(), newSize.height.toInt()); filterQuality: FilterQuality.high,
}, );
child: Platform.isLinux return LayoutBuilder(
? Transform( builder: ((context, constraints) => SizedBox(
alignment: Alignment.center, height: constraints.maxHeight,
transform: Matrix4.rotationX(pi), width: constraints.maxWidth,
child: texture) child: ResizeObserver(
: texture); onResized: (Size oldSize, Size newSize) async {
await widget.controller.resize(
newSize.width.toInt(), newSize.height.toInt());
},
child: Platform.isLinux
? Transform(
alignment: Alignment.center,
transform: Matrix4.rotationX(pi),
child: texture)
: texture))));
});
} }
} }