Fix issue that OverflowWidget not work well when the size of window is changing.

Author: zmtzawqlp

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 * Fix issue that setState() causes custom overflow to disappear(#171)
 * Fix issue that can' find no overflow(#167,#174)
+* Fix issue that OverflowWidget not work well when the size of window is changing.
 
 ## 15.0.0
 

lib/src/extended/rendering/paragraph.dart

@@ -53,6 +53,7 @@ class ExtendedRenderParagraph extends _RenderParagraph
  _overflowWidget = overflowWidget;
  _canSelectPlaceholderSpan = canSelectPlaceholderSpan;
  _gradientConfig = gradientConfig;
+ _textCache = text;
  }
 
  @override
@@ -103,6 +104,9 @@ class ExtendedRenderParagraph extends _RenderParagraph
  ChildLayoutHelper.layoutChild,
  ChildLayoutHelper.getBaseline,
  );
+ if (_textPainter.text != _textCache && _constraints != constraints) {
+ _textPainter.text = _textCache;
+ } 
  _layoutTextWithConstraints(constraints);
  positionInlineChildren(_textPainter.inlinePlaceholderBoxes!);
 
@@ -175,6 +179,7 @@ class ExtendedRenderParagraph extends _RenderParagraph
  _disposeSelectableFragments();
  _updateSelectionRegistrarSubscription();
  }
+ _constraints = constraints; 
  }
 
  @override

lib/src/extended/text_overflow_mixin.dart

@@ -66,6 +66,15 @@ mixin TextOverflowMixin on _RenderParagraph {
  markNeedsLayout();
  }
 
+ BoxConstraints? _constraints;
+ InlineSpan? _textCache;
+
+ @override
+ set text(InlineSpan value) {
+ _textCache = value;
+ super.text = value;
+ }
+
  void layoutOverflow() {
  // final bool didOverflowWidth = _didVisualOverflow();
  // layoutOfficalOverflow(didOverflowWidth);
@@ -147,7 +156,9 @@ mixin TextOverflowMixin on _RenderParagraph {
  final Size overflowWidgetSize = lastChild!.size;
  final TextOverflowPosition position = overflowWidget!.position;
 
- final TextPainter oneLineTextPainter = _copyTextPainter();
+ final TextPainter oneLineTextPainter = _copyTextPainter(
+ inlineSpan: _textCache,
+ );
 
  final List<PlaceholderDimensions> placeholderDimensions =
  layoutInlineChildren(