dragonbones_flutter 0.1.1

Draw DragonBones skeletal animations on a Flutter Canvas: update(dt) + render(Canvas), plus a ready-made widget and no game engine dependency.

Changelog

0.1.1

Packaging and hygiene release after the first publish. No change to the drawing: the tests that replay every runtime fixture through the real renderer behave exactly as they did in 0.1.0.

pub.dev score fixes. The 0.1.0 archive lost 30 of its 160 pub points, all of it recoverable:

• description shortened from 216 to 142 characters. Pub.dev rejects anything over 180, and that single field cost the whole 10-point "valid pubspec.yaml" section.
• Added example/example.dart, a small app that draws an armature with no asset files at all — the skeleton and atlas are embedded and the raster is generated in memory. That is the 10-point "package has an example" section, and it gives DragonBonesWidget a copy-pasteable entry point.
• analysis_options.yaml now also carries package:lints/core.yaml, the set pub.dev's pana merges over a package's own options, plus formatter: page_width: 120. Two rules existed on pub.dev's side and nowhere on ours — strict_top_level_inference and unintended_html_in_doc_comment, both newer than flutter_lints 4.x — so they were unreachable from CI. They are checked now.
• CI gates formatting, because pub.dev scores it.

Fixed: the README's opening DragonBones link was malformed — a duplicated closing bracket made the destination a URL containing ](. It rendered as broken text on the pub.dev page.

0.1.0

First release. Draws DragonBones skeletal animations on a Flutter Canvas through two methods, update(dt) and render(canvas) — with no dependency on any game engine, so the same code drops into a plain Flutter app, an engine component, or a CustomPainter.

• Sprites (drawImageRect) and deformable meshes (drawVertices + ImageShader), including skinned meshes with bone weights and animated FFD.
• Nested child armatures flattened into the draw list, with the parent slot's transform composed onto them.
• Slot colour transforms applied through ColorFilter.matrix, including per-channel offsets; the identity case is free.
• DragonBonesWidget with DragonBonesFit, and a computeBounds() extension for placement and hitboxes.

Built on dragonbones 0.1.0, whose geometry is diffed against the official DragonBones runtime across 51 assets — 757,701 numeric comparisons, 0 mismatches. This package's own tests replay every one of those fixtures through the real renderer to prove no asset is silently skipped.

Known limitations in this release

Inherited from the runtime (the renderer cannot draw what is not evaluated):

• No animation events (EventObject) — nothing can be driven from the animation.
• Animated IK is ignored (static IK works).
• SlotZIndex and SlotAlpha / BoneAlpha timelines are not evaluated, so animated draw order and per-slot fade will be wrong.
• Path constraints and Surface bones are not evaluated.

Specific to this package:

• Alpha, Erase, Invert, Layer and Subtract blend modes have no exact Flutter counterpart and use the closest ui.BlendMode. The other nine map cleanly. No fixture uses the approximated five — unverified.
• Rotated atlas entries have a code path that no fixture exercises — unverified.
• Appearance is not checked by CI. Runners have no GPU; tests rasterise and count painted pixels, which catches "wired wrong and drew nothing", not "drew it wrong".
• No benchmarks. Allocation behaviour differs from upstream because pooling was dropped.