infinite_lazy_grid
Code Issues

improve keying logic to prevent superflous builds

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This commit is contained in:
ruinivist
2025-08-16 05:58:21 +00:00
parent 6a262c1723
commit 3337e204cc
3 changed files with 9 additions and 8 deletions
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lib/core/controller/controller.dart
+7 -6
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@@ -131,7 +131,11 @@ class LazyCanvasController with ChangeNotifier {
CanvasChildId _addChildInternal(Offset position, Widget widget, {Size? childSize, CanvasChildId? id}) {
assert(!useIdsFromArgs || useIdsFromArgs && id != null);
id ??= _uuid.v4();
_children[id] = _ChildInfo(gsPosition: position, widget: widget, lastRenderedSize: childSize);
_children[id] = _ChildInfo(
gsPosition: position,
widget: Container(key: ValueKey<String>(id), child: widget),
lastRenderedSize: childSize,
);
_spatialHash.add(position.toPoint(), id); // add to spatial hash
return id;
}
@@ -177,10 +181,7 @@ class LazyCanvasController with ChangeNotifier {
/// Update a child's widget.
void updateChildWidget(CanvasChildId id, Widget newWidget) {
if (_children.containsKey(id)) {
final child = _children[id]!;
// Create a new _ChildInfo with the new widget
_children[id] = _ChildInfo(gsPosition: child.gsPosition, widget: newWidget)
..lastRenderedSize = child.lastRenderedSize;
_children[id]!.widget = Container(key: ValueKey<String>(id), child: newWidget);
markDirty();
} else {
throw _ChildNotFoundException;
@@ -271,7 +272,7 @@ class LazyCanvasController with ChangeNotifier {
final item = _children[id]!;
final ssPosition = gsToSs(item.gsPosition, _gsTopLeftOffset, _scale);
var child = item.widget;
if (debug) child = _Debug(id: id, gs: item.gsPosition, ss: ssPosition, child: child);
if (debug) child = _Debug(key: ValueKey<String>(id), id: id, gs: item.gsPosition, ss: ssPosition, child: child);
return ChildInfo(id: id, gsPosition: item.gsPosition, ssPosition: ssPosition, child: child);
}).toList();
}