Xianyu Technology
Jun 15, 2022 · Mobile Development
Implementing Magnifier Mode and Reverse Selection in Flutter TextField
The article details how to add a native‑style magnifier loupe and support reverse text selection to Flutter’s TextField by using CompositedTransformTarget/Follower overlays with BackdropFilter rendering, extending TextSelectionOverlay and gesture builders, tracking drag state, and swapping selection offsets when handles cross.
Cross-platformFlutterMagnifier
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