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rendering correctly with backing window but some issues re pixel density, scroll & foregrounding on start

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This commit is contained in:
Nick Fisher
2023-10-25 17:52:37 +11:00
parent 8cea106b30
commit 0928d9d273
13 changed files with 404 additions and 376 deletions
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84
lib/widgets/filament_widget.dart
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@@ -42,7 +42,7 @@ class _RenderResizeObserver extends RenderProxyBox {
void performLayout() async {
super.performLayout();
if (size.width != _oldSize.width || size.height != _oldSize.height) {
onLayoutChangedCallback(size);
onLayoutChangedCallback(size);
_oldSize = Size(size.width, size.height);
}
}
@@ -87,7 +87,7 @@ class _FilamentWidgetState extends State<FilamentWidget> {
return ResizeObserver(
onResized: (newSize) {
if(!Platform.isWindows) {
if (!Platform.isWindows) {
return;
}
WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
@@ -124,10 +124,10 @@ class _SizedFilamentWidget extends StatefulWidget {
}
class _SizedFilamentWidgetState extends State<_SizedFilamentWidget> {
String? _error;
late final AppLifecycleListener _appLifecycleListener;
AppLifecycleState? _lastState;
@override
void initState() {
@@ -136,9 +136,6 @@ class _SizedFilamentWidgetState extends State<_SizedFilamentWidget> {
);
WidgetsBinding.instance.addPostFrameCallback((timeStamp) async {
if (!kReleaseMode) {
await Future.delayed(Duration(seconds: 2));
}
try {
await widget.controller.createViewer(widget.width, widget.height);
} catch (err) {
@@ -171,7 +168,7 @@ class _SizedFilamentWidgetState extends State<_SizedFilamentWidget> {
var width = size.width.ceil();
var height = size.height.ceil();
while (_resizing) {
await Future.delayed(Duration(milliseconds: 20));
await Future.delayed(const Duration(milliseconds: 20));
}
_resizing = true;
await widget.controller.resize(width, height);
@@ -237,7 +234,6 @@ class _SizedFilamentWidgetState extends State<_SizedFilamentWidget> {
await widget.controller.setRendering(_wasRenderingOnInactive);
break;
}
_lastState = state;
}
@override
@@ -252,31 +248,55 @@ class _SizedFilamentWidgetState extends State<_SizedFilamentWidget> {
]));
}
return ListenableBuilder(listenable: widget.controller.textureDetails, builder: (BuildContext ctx, Widget? wdgt) {
if (widget.controller.textureDetails.value == null) {
return Stack(children: [
Positioned.fill(child: widget.initial ?? Container(color: Colors.red))
]);
}
// see [FilamentControllerFFI.resize] for an explanation of how we deal with resizing
var texture = Texture(
key: ObjectKey("texture_${widget.controller.textureDetails.value!.textureId}"),
textureId: widget.controller.textureDetails.value!.textureId,
filterQuality: FilterQuality.none,
freeze: false,
);
if (!widget.controller.requiresTextureWidget) {
return Stack(children: [
Positioned.fill(
child: Platform.isLinux || Platform.isWindows
? Transform(
alignment: Alignment.center,
transform: Matrix4.rotationX(
pi), // TODO - this rotation is due to OpenGL texture coordinate working in a different space from Flutter, can we move this to the C++ side somewhere?
child: texture)
: texture)
Positioned.fill(child: CustomPaint(painter: TransparencyPainter()))
]);
});
}
return ListenableBuilder(
listenable: widget.controller.textureDetails,
builder: (BuildContext ctx, Widget? wdgt) {
if (widget.controller.textureDetails.value == null) {
return Stack(children: [
Positioned.fill(
child: widget.initial ?? Container(color: Colors.red))
]);
}
// see [FilamentControllerFFI.resize] for an explanation of how we deal with resizing
var texture = Texture(
key: ObjectKey(
"texture_${widget.controller.textureDetails.value!.textureId}"),
textureId: widget.controller.textureDetails.value!.textureId,
filterQuality: FilterQuality.none,
freeze: false,
);
return Stack(children: [
Positioned.fill(
child: Platform.isLinux || Platform.isWindows
? Transform(
alignment: Alignment.center,
transform: Matrix4.rotationX(
pi), // TODO - this rotation is due to OpenGL texture coordinate working in a different space from Flutter, can we move this to the C++ side somewhere?
child: texture)
: texture)
]);
});
}
}
class TransparencyPainter extends CustomPainter {
@override
void paint(Canvas canvas, Size size) {
canvas.drawRect(
Rect.fromLTWH(0, 0, size.width, size.height),
Paint()
..blendMode = BlendMode.clear
..color = const Color(0x00000000),
);
}
@override
bool shouldRepaint(covariant CustomPainter oldDelegate) => true;
}