[webs:sketch] do not match bitmap canvases that are too big
diff --git a/lib/web_ui/lib/src/engine/html/picture.dart b/lib/web_ui/lib/src/engine/html/picture.dart
index da6f988..e16c252 100644
--- a/lib/web_ui/lib/src/engine/html/picture.dart
+++ b/lib/web_ui/lib/src/engine/html/picture.dart
@@ -427,6 +427,12 @@
final double pixelCountRatio = newPixelCount / oldPixelCount;
assert(0 <= pixelCountRatio && pixelCountRatio <= 1.0,
'Invalid pixel count ratio $pixelCountRatio');
+
+ if (pixelCountRatio < 0.25) {
+ // The old canvas has more than 4x the number of pixels we need. It's best
+ // to let that canvas be recycled and allocate a smaller one.
+ return 1.0;
+ }
return 1.0 - pixelCountRatio;
}
}
