interactive_viewer_vector 0.2.2

Fork of the Flutter SDK InteractiveViewer that updates the RenderTransform directly (markNeedsPaint) instead of calling setState on every pan/zoom frame. No widget tree rebuild during pan/zoom interactions.

Changelog

0.2.1

• Added drag_no_rebuild_test.dart in example/test/ — performance regression test that counts widget rebuilds during a simulated node drag. Validates that ValueListenableBuilder (current pattern) rebuilds the widget tree on every PointerMove, while a CustomPainter(repaint: notifier) pattern stays at zero rebuilds. CI-compatible, deterministic.
• Reformatted source files with dart format -l 120 for pub.dev style compliance.

0.2.0

• Added clampTranslate(Matrix4 matrix, Offset translation) on TransformationControllerVector. Delegates to the State's _matrixTranslate for full boundary clamping (viewport + boundaryMargin). Falls back to raw translateByDouble when no InteractiveViewerVector is attached. Consumers can now pan with boundary clamping without duplicating the fork's internal clamping logic.
• Injected ClampTranslateFn callback from _InteractiveViewerVectorState into the controller via _clampTranslate field. Wired in initState, re-wired in didUpdateWidget (controller swap), cleared in dispose.
• Example app rewritten: StatelessWidget with ValueNotifier for nodes + drag state (zero setState). Custom pan via clampTranslate (panEnabled: false), manual hit-test for node dragging, scroll-to-pan. Node "DRAG ME" (yellow) added for drag testing.
• Added 9 unit tests for clampTranslate (test/clamp_translate_test.dart): fallback mode (3), boundary clamping (6 — small translation passes, large translation clamped, scale preserved, low-scale sync, anti-drift over 50 iterations).
• Example integration tests updated: pan/zoom scenario, node drag (clampTranslate does not steal gesture), low-scale boundary respect.

0.1.1

• Removed all dead rotation gesture code from the SDK fork (unused _rotateEnabled, _matrixRotate, _getAxisAlignedBoundingBoxWithRotation, _GestureType.rotate, two TODOs referencing flutter/flutter#57698). Rotation was designed for geographic map use cases, never completed upstream, and irrelevant for this package's target use cases.
• CI/CD pipeline added (GitHub Actions): format check (line 120), analyze, unit + widget tests, builds for Android, Linux, Windows, macOS, iOS, and auto-release on main push.

0.1.0

• Initial public release.
• Fork of the Flutter SDK InteractiveViewer with direct RenderTransform updates (markNeedsPaint) instead of setState during pan/zoom.
• Same public API as the SDK widget, renamed: InteractiveViewerVector, TransformationControllerVector, InteractiveViewerVectorWidgetBuilder.
• Unit tests (geometry helpers, controller, constructor assertions), widget tests (no-rebuild guarantee, gestures, builder constructor) and an example app with integration test.
• Native platforms only: Android, iOS, macOS, Windows, Linux.