Blog: build-time SVG and Lottie transcoders (Metal-only on iOS)#5084
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shai-almog wants to merge 1 commit into
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Blog: build-time SVG and Lottie transcoders (Metal-only on iOS)#5084shai-almog wants to merge 1 commit into
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Covers PRs #5042, #5049, and #5066. PR #5042: the maven/svg-transcoder/ module that parses SVG at build time and emits a Codename One Image subclass rendering through the Graphics shape API. SMIL animations honoured. Drop files into src/main/svg/, the build emits Java, Resources.getImage(name) returns them. PR #5049: three iOS Metal and Android rendering fixes that the SVG screenshot tests exposed: - Metal setClip(GeneralPath) flattened to a polyline so the stencil no longer reads as a triangle fan. - Metal drawString reads the effective scale from currentTransform and picks the right atlas font. - LinearGradientPaint.paint drops the duplicated translate. PR #5066: Bodymovin / Lottie JSON files flow through the same pipeline as SVG. New maven/lottie-transcoder/ lowers each Lottie file into the existing SVGDocument model; the same JavaCodeGenerator emits the GeneratedSVGImage subclass; the same SVGRegistry handles both. No new Image base class, no per-port wiring. Calls out the Metal-only caveat on iOS (the GL ES 2 path does not have the shape coverage). Now that Metal is the default this is a non-issue on most apps.
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Superseded — consolidating the follow-up posts so this release week ships fewer, broader posts. New merged versions in the follow-up PRs to this one. |
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Summary
maven/svg-transcoder/module. SVGs insrc/main/svg/become Codename OneImagesubclasses; SMIL animations honoured; rendered through theGraphicsshape API.setClip(GeneralPath)triangle fan, iOS MetaldrawStringunder affine scale, andLinearGradientPaint.paint's duplicated translate.maven/lottie-transcoder/module. Bodymovin / Lottie JSON files flow through the same pipeline as SVG: sameSVGDocumentmodel, sameJavaCodeGenerator, sameSVGRegistry. No newImagebase class, no per-port wiring.File
docs/website/content/blog/svg-lottie-build-time.md— single new file.Sequencing
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master; intended to publish after the ORM / mapping / binder post (#5083). Front matter date is2026-06-07.Test plan
docs/websitesucceeds./static/blog/svg-lottie-build-time.jpg.