infinite_lazy_grid
Code Issues

fix more than needed rebuilds on canvas children

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this used a stupid builderFunc instead of a widget so flutter wasn't able to optimise those widget builds and it was simply a blanket rebuild. Added more examples as well
This commit is contained in:
ruinivist
2025-07-26 17:47:42 +00:00
parent 96e55a7157
commit 7ad54a92cb
8 changed files with 427 additions and 12 deletions
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test/canvas_view_test.dart
+3 -3
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@@ -15,7 +15,7 @@ void main() {
testWidgets('CanvasView renders only visible children and reduces count on zoom out', (WidgetTester tester) async {
final controller = LazyCanvasController(debug: true);
for (int i = 0; i < 10000; i++) {
controller.addChild(Offset((i % 80) * 100.0, (i ~/ 80) * 100.0), (_) => TestChild(index: i));
controller.addChild(Offset((i % 80) * 100.0, (i ~/ 80) * 100.0), TestChild(index: i));
}
await tester.pumpWidget(
MaterialApp(
@@ -45,8 +45,8 @@ void main() {
testWidgets('CanvasView scales as expected', (WidgetTester tester) async {
final controller = LazyCanvasController(debug: true);
controller.addChild(const Offset(0, 0), (_) => TestChild(index: 0));
controller.addChild(const Offset(100, 100), (_) => TestChild(index: 1));
controller.addChild(const Offset(0, 0), TestChild(index: 0));
controller.addChild(const Offset(100, 100), TestChild(index: 1));
await tester.pumpWidget(
MaterialApp(
home: Scaffold(