Dart sources debuggable as Dart; Flutter support in the Gradle plugin by shai-almog · Pull Request #6132 · codenameone/CodenameOne

shai-almog · 2026-10-29T15:00:29Z

Dart -> Java debug line mapping

Follows the approach #6128 takes for Python.

JavaEmitter writes a //@dart:<line> <file> mark before every lowered statement and => body.
DartLineTable turns the marks into a $cn1DartLines constant, placed before the type's closing brace so no line moves.
- It is split over several constants past 20k characters, because of the 64 KB class-file limit.
DartLineMapper (build-engine) runs after javac, from remap-compat on Maven and RemapCompatAction on Gradle, only when src/main/flutter exists. It:
- rewrites line numbers to the Dart lines and sets SourceFile to the .dart file;
- adds a JSR-45 SMAP whose default stratum is Dart. part files get their own ranges, and any range past the u2 limit is dropped;
- rebuilds the constant pool, so no trace of the table ships.
Classes javac splits out of another class take that class's table through NestHost, EnclosingMethod or their own InnerClasses entry, never by name. A Dart Foo$Bar stays its own class.

Flutter in the Gradle plugin

The transcode-flutter logic moves unchanged into FlutterProjectBuilder (build-engine). The Mojo now delegates to it.
New transcodeFlutter task for any project with src/main/flutter:
- adds codenameone-flutter-runtime itself;
- generated Java becomes a main source root;
- flattened assets go to build/cn1-flutter/resources, which is part of the main output, never compileJava's output directory;
- cn1.flutter.package is read from the Gradle or system property;
- deleted sources are cleaned up.
convert-to-gradle leaves the runtime to the plugin.

Tests

DartLineTableTest and DartLineMapperTest cover parts, chunking, nested classes, $ names, u2 overflow and constant-pool cleanup. The two transpiler goldens are regenerated; they change only by the marks and the table.
New gradle-flutter-test.sh (step in gradle-smoke.yml, which now also builds the JDK 17 Flutter runtime). It builds one Flutter app with Maven and with Gradle and checks:
- the transpiled classes and flattened assets are the same both ways;
- both builds' classes name main.dart and carry the SMAP, with no table left;
- the jar contains the asset;
- removing src/main/flutter removes what it produced.
It passes locally.

🤖 Generated with Claude Code

The Dart transpiler marks every statement with its Dart line and stores a line table in each generated class; DartLineMapper (build-engine) rewrites the compiled classes after javac so their line numbers, source file and a JSR-45 source map point at the .dart file. A Java debugger steps through the Dart source and stack traces name main.dart:12 on every target. The transcode-flutter goal's logic moves into FlutterProjectBuilder in build-engine, which the Maven goal and a new Gradle transcodeFlutter task both run. convert-to-gradle leaves the runtime to the plugin. gradle-flutter-test.sh builds one Flutter app both ways and compares them. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…plugin packs, Firebase federated sign-in Library-scoped stubs (dartlib_*.dart) so dart:developer's log does not shadow dart:math's; RandomAccessFile; the importer skips web-only branches, transpiles desktop-only plugins and writes a JSON report with the transitive cause of every unsupported package. Plugin packs for timezone, app_settings, install referrer, geocoding, file_picker, audioplayers, mixpanel, web auth, image compress, image_picker platform, webview, video player/thumbnail/compress, camera, emoji picker and svg. firebase_auth exchanges Google/Apple/OAuth credentials through signInWithIdp; google_sign_in over GoogleConnect. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…e-scoped stubs - FirebaseUI auth screens, Google/Apple providers, google_sign_in, federated firebase_auth credentials; App Check; firebase_ai over the AI Logic REST API. - Stub files can declare `// cn1:package`, so two packages exporting one name resolve per importing library, and an app's own class is never shadowed. - @Unapplied stub parameters warn (W0002); stub packs declare import coverage. - en/es/he Material and Cupertino localizations; RTL mirroring of rows, wraps, directional alignment, stacks, text, list tiles, app bars and arrow icons. - cached_network_image placeholder/progress/error widgets, polyline and circle taps, ui.Image prefix, ByteData.buffer, depth for dio, url_launcher, image_picker, messaging, notifications and maps. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…e, header reloads Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

The Gradle support moved copyAssets/removeStaleAssets from TranscodeFlutterMojo into FlutterProjectBuilder; the plugin's test still called the mojo and failed test compilation in every job that builds the plugin. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

github-actions · 2026-10-29T18:22:05Z

Flutter vs Codename One

Same application, built both ways: Flutter's AOT compile of the gallery, and the identical Dart source transpiled to Java on Codename One. Lower is better for every metric, so a ratio above 1.00x means Codename One is ahead by that factor.

android

9 interleaved rounds; host load 0.45, 1.89, 1.63

Metric	Codename One	Flutter	Ratio	Winner
Installed size	78.3 MB	95.8 MB	1.22x	Codename One
Executable code	4.7 MB	20.6 MB	4.35x	Codename One
Download size (zipped)	78.3 MB	95.8 MB	1.22x	Codename One
Cold start to first frame on screen	374 ms	1557 ms	3.85x	Codename One
Memory at rest	48.3 MB	90.5 MB	1.88x	Codename One

Start-up and memory at rest are judged round by round: the ratio is the median of the per-round ratios, each from two launches made back to back, and the times and sizes shown are each side's median, so the ratio need not equal their quotient. Codename One was ahead in 9 of 9 rounds on cold start to first frame on screen; 9 of 9 rounds on memory at rest.

Compute -- the VM workloads (vm/benchmarks), run inside each app; time is the best of the app's own repetitions, higher ratio means Codename One is faster.

Workload	Codename One	Flutter	Ratio
intArithmetic	90 ms	189 ms	2.10x
longArithmetic	64 ms	59 ms	0.92x
mathTranscendental	228 ms	351 ms	1.54x
arraySequential	27 ms	36 ms	1.33x
arrayRandom	252 ms	398 ms	1.58x
objectAllocation	65 ms	49 ms	0.75x
valueEscape	7 ms	7 ms	1.00x
hashMapChurn	136 ms	302 ms	2.22x
stringBuilding	96 ms	132 ms	1.38x
recursion	85 ms	274 ms	3.22x
quicksortBench	128 ms	153 ms	1.20x
Geometric mean			1.44x

Gate: within tolerance against scripts/flutter-bench/baseline.

Android sizes are for the arm64-v8a slice a phone is delivered, on both sides; Flutter's release apk carries three ABIs and would otherwise count its engine about three times.
Android start-up and memory come from an x86_64 emulator with a software GPU. They compare the two runtimes on one machine; they are not phone timings, and a renderer that leans on the GPU is penalised more there.
This platform's adapter has not been exercised end to end before; treat the first published run as the thing under review.

ios

9 interleaved rounds; host load 30.3, 28.62, 21.7

Metric	Codename One	Flutter	Ratio	Winner
Installed size	108.4 MB	110.5 MB	1.02x	Codename One
Executable code	17.4 MB	19.1 MB	1.09x	Codename One
Download size (zipped)	80.0 MB	81.9 MB	1.02x	Codename One
Cold start to first frame on screen	--	--	--	not measured
Memory at rest	--	--	--	not measured

Compute -- the VM workloads (vm/benchmarks), run inside each app; time is the best of the app's own repetitions, higher ratio means Codename One is faster.

Not measured: iOS compute is not measured: a device build needs signed hardware, and on the simulator Flutter runs its JIT debug engine rather than AOT code. The macOS row runs the same ParparVM and Dart AOT compilers on the same Apple silicon.

Gate: within tolerance against scripts/flutter-bench/baseline.

iOS start-up and memory are not measured here: Flutter cannot AOT-compile for the simulator, so a simulator run would time a JIT debug build against a release build. Sizes come from release device bundles; timings need signed hardware.
This platform's adapter has not been exercised end to end before; treat the first published run as the thing under review.

javascript

9 interleaved rounds; host load 2.16, 1.34, 0.6

Metric	Codename One	Flutter	Ratio	Winner
Installed size	104.4 MB	122.5 MB	1.17x	Codename One
Executable code	13.3 MB	25.2 MB	1.89x	Codename One
Download size (zipped)	76.4 MB	84.1 MB	1.10x	Codename One
Cold start to first frame on screen	--	--	--	not measured
Memory at rest	--	--	--	not measured

Compute -- the VM workloads (vm/benchmarks), run inside each app; time is the best of the app's own repetitions, higher ratio means Codename One is faster.

Workload	Codename One	Flutter	Ratio
intArithmetic	653 ms	wrong result	Flutter: wrong result
longArithmetic	5006 ms	did not run	Flutter: did not run
mathTranscendental	575 ms	did not run	Flutter: did not run
arraySequential	233 ms	83 ms	0.36x
arrayRandom	1020 ms	wrong result	Flutter: wrong result
objectAllocation	38 ms	27 ms	0.71x
valueEscape	154 ms	7 ms	0.04x
hashMapChurn	1105 ms	246 ms	0.22x
stringBuilding	513 ms	107 ms	0.21x
recursion	507 ms	494 ms	0.97x
quicksortBench	410 ms	wrong result	Flutter: wrong result
Geometric mean			0.28x

Gate: within tolerance against scripts/flutter-bench/baseline; BEHIND FLUTTER on Compute (geomean of the VM workloads) (reported, not gated: a loss to Flutter on the web is currently accepted).

the JavaScript adapter needs a Chrome DevTools driver; sizes are reported and timings are not
This platform's adapter has not been exercised end to end before; treat the first published run as the thing under review.

linux

9 interleaved rounds; host load 0.34, 2.76, 2.25

Metric	Codename One	Flutter	Ratio	Winner
Installed size	113.5 MB	143.8 MB	1.27x	Codename One
Executable code	15.8 MB	16.1 MB	1.02x	Codename One
Download size (zipped)	81.7 MB	92.9 MB	1.14x	Codename One
Cold start to first frame on screen	151 ms	197 ms	1.31x	Codename One
Memory at rest	90.6 MB	225.9 MB	2.49x	Codename One

Start-up and memory at rest are judged round by round: the ratio is the median of the per-round ratios, each from two launches made back to back, and the times and sizes shown are each side's median, so the ratio need not equal their quotient. Codename One was ahead in 8 of 9 rounds on cold start to first frame on screen; 9 of 9 rounds on memory at rest.

Compute -- the VM workloads (vm/benchmarks), run inside each app; time is the best of the app's own repetitions, higher ratio means Codename One is faster.

Workload	Codename One	Flutter	Ratio
intArithmetic	65 ms	160 ms	2.46x
longArithmetic	49 ms	50 ms	1.02x
mathTranscendental	182 ms	198 ms	1.09x
arraySequential	11 ms	30 ms	2.73x
arrayRandom	213 ms	237 ms	1.11x
objectAllocation	19 ms	30 ms	1.58x
valueEscape	4 ms	6 ms	1.50x
hashMapChurn	37 ms	277 ms	7.49x
stringBuilding	26 ms	85 ms	3.27x
recursion	67 ms	230 ms	3.43x
quicksortBench	122 ms	128 ms	1.05x
Geometric mean			1.97x

Gate: within tolerance against scripts/flutter-bench/baseline.

This platform's adapter has not been exercised end to end before; treat the first published run as the thing under review.

macos

9 interleaved rounds; host load 3.89, 15.96, 16.45

Metric	Codename One	Flutter	Ratio	Winner
Installed size	124.6 MB	139.4 MB	1.12x	Codename One
Executable code	33.5 MB	47.9 MB	1.43x	Codename One
Download size (zipped)	85.6 MB	93.3 MB	1.09x	Codename One
Cold start to first frame on screen	204 ms	319 ms	1.64x	Codename One
Memory at rest	34.9 MB	52.5 MB	1.51x	Codename One

Start-up and memory at rest are judged round by round: the ratio is the median of the per-round ratios, each from two launches made back to back, and the times and sizes shown are each side's median, so the ratio need not equal their quotient. Codename One was ahead in 7 of 9 rounds on cold start to first frame on screen; 9 of 9 rounds on memory at rest.

Compute -- the VM workloads (vm/benchmarks), run inside each app; time is the best of the app's own repetitions, higher ratio means Codename One is faster.

Workload	Codename One	Flutter	Ratio
intArithmetic	103 ms	232 ms	2.25x
longArithmetic	68 ms	63 ms	0.93x
mathTranscendental	255 ms	314 ms	1.23x
arraySequential	10 ms	41 ms	4.10x
arrayRandom	242 ms	289 ms	1.19x
objectAllocation	57 ms	26 ms	0.46x
valueEscape	5 ms	12 ms	2.40x
hashMapChurn	27 ms	151 ms	5.59x
stringBuilding	21 ms	98 ms	4.67x
recursion	119 ms	250 ms	2.10x
quicksortBench	109 ms	126 ms	1.16x
Geometric mean			1.85x

Gate: within tolerance against scripts/flutter-bench/baseline.

This platform's adapter has not been exercised end to end before; treat the first published run as the thing under review.

windows

9 interleaved rounds

Metric	Codename One	Flutter	Ratio	Winner
Installed size	108.4 MB	121.1 MB	1.12x	Codename One
Executable code	11.8 MB	14.1 MB	1.20x	Codename One
Download size (zipped)	78.1 MB	86.4 MB	1.11x	Codename One
Cold start to first frame on screen	157 ms	260 ms	1.64x	Codename One
Memory at rest	57.3 MB	92.8 MB	1.62x	Codename One

Start-up and memory at rest are judged round by round: the ratio is the median of the per-round ratios, each from two launches made back to back, and the times and sizes shown are each side's median, so the ratio need not equal their quotient. Codename One was ahead in 9 of 9 rounds on cold start to first frame on screen; 9 of 9 rounds on memory at rest.

Compute -- the VM workloads (vm/benchmarks), run inside each app; time is the best of the app's own repetitions, higher ratio means Codename One is faster.

Workload	Codename One	Flutter	Ratio
intArithmetic	81 ms	185 ms	2.28x
longArithmetic	60 ms	58 ms	0.97x
mathTranscendental	198 ms	286 ms	1.44x
arraySequential	12 ms	36 ms	3.00x
arrayRandom	269 ms	299 ms	1.11x
objectAllocation	25 ms	40 ms	1.60x
valueEscape	1 ms	7 ms	7.00x
hashMapChurn	50 ms	330 ms	6.60x
stringBuilding	35 ms	121 ms	3.46x
recursion	201 ms	264 ms	1.31x
quicksortBench	144 ms	151 ms	1.05x
Geometric mean			2.11x

Gate: within tolerance against scripts/flutter-bench/baseline.

This platform's adapter has not been exercised end to end before; treat the first published run as the thing under review.

Codename One wins 26 of 26 measured metrics across 6 platform(s).

…snippet self-contained The import-report JSON, the stub-pack Dart and the stub-pack Java were inline blocks; they now live in docs/demos (the Java as a compiled class) and are included by tag. The UIManager javadoc snippet named an undefined resourceFile and was baselined under an old hash since #6106 changed it; it now compiles in the Playground and its baseline entry is gone. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

github-actions · 2026-10-29T19:37:46Z

Developer Guide build artifacts are available for download from this workflow run:

Developer Guide quality checks:

AsciiDoc linter: No issues found (report)
Vale: No alerts found (report)
Paragraph capitalization: No paragraph capitalization issues (report)
LanguageTool: No grammar matches (report)
Image references: No unused images detected (report)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

shai-almog · 2026-10-29T20:53:17Z

Native fidelity (Android, Material 3)

54 pairs compared -- median 95.6%, worst 91.3% (FlatButton_pressed_dark), 25th pct 94.9%, mean 95.7%.

Distribution -- >=99%: 2 | 95-99%: 37 | 90-95%: 15 | <90%: 0

Component	State	Appearance	Material	Fidelity	SSIM	mean delta	Geometry
FlatButton	pressed	dark	normal	91.3%	0.899	3.10	ok
Tabs	normal	light	normal	92.3%	0.914	3.05	ok
Button	pressed	dark	normal	92.6%	0.949	4.32	ok
FlatButton	normal	dark	normal	93.2%	0.938	2.69	ok
Button	disabled	dark	normal	93.3%	0.928	2.20	ok
Button	pressed	light	normal	93.3%	0.952	3.68	ok
FlatButton	normal	light	normal	93.7%	0.941	2.29	ok
FlatButton	pressed	light	normal	93.8%	0.942	2.56	ok
FloatingActionButton	pressed	light	normal	94.4%	0.927	2.82	OFF (h 0.88)
RadioButton	normal	dark	normal	94.5%	0.963	2.19	ok
RadioButton	normal	light	normal	94.7%	0.964	1.85	ok
CheckBox	selected	dark	normal	94.7%	0.950	2.60	ok
RadioButton	selected	dark	normal	94.8%	0.963	2.42	ok
CheckBox	normal	dark	normal	94.9%	0.952	2.69	ok
Button	normal	dark	normal	94.9%	0.949	3.16	ok
CheckBox	normal	light	normal	95.0%	0.953	2.30	ok
Toolbar	normal	dark	normal	95.1%	0.906	1.60	ok
RaisedButton	pressed	dark	normal	95.2%	0.950	2.39	ok
CheckBox	disabled	dark	normal	95.2%	0.954	1.47	ok
CheckBox	disabled	light	normal	95.2%	0.956	1.34	ok
Tabs	normal	dark	normal	95.2%	0.913	3.65	ok
RadioButton	disabled	dark	normal	95.3%	0.963	1.18	ok
RadioButton	selected	light	normal	95.3%	0.964	1.84	ok
CheckBox	selected	light	normal	95.4%	0.952	2.06	ok
Switch	selected	light	normal	95.4%	0.966	1.59	ok
Switch	selected	dark	normal	95.5%	0.966	1.86	ok
RadioButton	disabled	light	normal	95.5%	0.966	1.08	ok
Switch	disabled	dark	normal	95.6%	0.961	0.85	ok
Dialog	normal	light	normal	95.7%	0.930	2.30	ok
RaisedButton	pressed	light	normal	95.8%	0.958	2.16	ok
Button	normal	light	normal	95.8%	0.953	2.46	ok
Dialog	normal	dark	normal	95.8%	0.932	2.30	ok
Switch	normal	light	normal	96.0%	0.961	1.45	ok
FloatingActionButton	normal	light	normal	96.1%	0.937	1.14	ok
FloatingActionButton	pressed	dark	normal	96.2%	0.951	2.45	ok
Switch	normal	dark	normal	96.2%	0.962	1.39	ok
TextField	disabled	dark	normal	96.2%	0.965	0.76	ok
RaisedButton	normal	dark	normal	96.4%	0.952	1.78	ok
Switch	disabled	light	normal	96.4%	0.970	0.61	ok
Button	disabled	light	normal	96.8%	0.960	1.06	ok
ProgressBar	normal	dark	normal	96.9%	0.967	2.03	OFF (h 1.50)
RaisedButton	disabled	dark	normal	97.0%	0.955	0.89	ok
FloatingActionButton	normal	dark	normal	97.1%	0.952	1.43	ok
ProgressBar	normal	light	normal	97.3%	0.974	1.53	OFF (h 1.50)
RaisedButton	disabled	light	normal	97.3%	0.961	0.79	ok
TextField	disabled	light	normal	97.3%	0.965	0.79	ok
RaisedButton	normal	light	normal	97.3%	0.961	1.40	ok
TextField	normal	dark	normal	97.6%	0.958	1.83	ok
TextField	normal	light	normal	97.6%	0.958	1.63	ok
Slider	normal	dark	normal	98.4%	0.990	0.87	ok
Toolbar	normal	light	normal	98.7%	0.974	1.28	ok
Slider	normal	light	normal	99.0%	0.991	0.47	ok
Slider	disabled	dark	normal	99.6%	0.993	0.22	ok
Slider	disabled	light	normal	99.6%	0.993	0.18	ok

Geometry vs native (bbox offset / size ratio / center offset / corner radius) -- gated separately from the visual score

Component	State	Appearance	bbox dx,dy (px)	w ratio	h ratio	center off (px)	radius native->cn1 (px)
FloatingActionButton	pressed	light	+0,+0	0.929	0.881	4.0	-
FloatingActionButton	normal	light	+0,+0	0.946	0.912	2.9	-
Button	pressed	dark	+0,+0	0.947	0.975	2.6	-
Button	disabled	dark	+0,+0	0.947	0.975	2.6	-
Button	pressed	light	+0,+0	0.947	0.975	2.6	-
Button	normal	dark	+0,+0	0.947	0.975	2.6	-
RaisedButton	pressed	dark	+0,+0	0.945	0.975	2.6	-
RaisedButton	pressed	light	+0,+0	0.945	0.975	2.6	-
Button	normal	light	+0,+0	0.947	0.975	2.6	-
RaisedButton	normal	dark	+0,+0	0.945	0.975	2.6	-
Button	disabled	light	+0,+0	0.947	0.975	2.6	-
RaisedButton	disabled	dark	+0,+0	0.945	0.975	2.6	-
RaisedButton	disabled	light	+0,+0	0.945	0.975	2.6	-
RaisedButton	normal	light	+0,+0	0.945	0.975	2.6	-
RadioButton	normal	dark	+1,+1	1.029	1.000	2.2	-
RadioButton	normal	light	+1,+1	1.029	1.000	2.2	-
RadioButton	selected	dark	+1,+1	1.029	1.000	2.2	-
RadioButton	disabled	dark	+1,+1	1.029	1.000	2.2	-
RadioButton	selected	light	+1,+1	1.029	1.000	2.2	-
Switch	selected	light	+0,+0	1.080	1.063	2.2	-
RadioButton	disabled	light	+1,+1	1.029	1.000	2.2	-
CheckBox	selected	dark	+1,+1	1.013	1.000	1.8	-
CheckBox	normal	dark	+1,+1	1.013	1.000	1.8	-
CheckBox	normal	light	+1,+1	1.013	1.000	1.8	-
CheckBox	disabled	dark	+1,+1	1.013	1.000	1.8	-
CheckBox	disabled	light	+1,+1	1.013	1.000	1.8	-
CheckBox	selected	light	+1,+1	1.013	1.000	1.8	-
Switch	selected	dark	+0,+0	1.060	1.031	1.6	-
Switch	disabled	dark	+0,-1	1.060	1.031	1.6	-
Dialog	normal	light	+0,+0	1.007	0.982	1.6	-
Dialog	normal	dark	+0,+0	1.007	0.982	1.6	-
Switch	normal	light	+0,-1	1.060	1.031	1.6	-
Switch	normal	dark	+0,-1	1.060	1.031	1.6	-
Switch	disabled	light	+0,-1	1.060	1.031	1.6	-
FloatingActionButton	pressed	dark	+0,+0	0.963	0.963	1.4	-
FloatingActionButton	normal	dark	+0,+0	0.963	0.963	1.4	-
Toolbar	normal	light	-1,+1	1.000	1.000	1.4	-
FlatButton	pressed	dark	+0,+0	0.977	0.975	1.1	-
FlatButton	normal	dark	+0,+0	0.977	0.975	1.1	-
FlatButton	normal	light	+0,+0	0.977	0.975	1.1	-
FlatButton	pressed	light	+0,+0	0.977	0.975	1.1	-
TextField	normal	dark	+0,+0	1.015	1.036	1.1	-
TextField	normal	light	+0,+0	1.015	1.036	1.1	-
Toolbar	normal	dark	+0,+0	1.000	1.032	1.0	-
ProgressBar	normal	dark	+0,+0	1.000	1.500	1.0	-
ProgressBar	normal	light	+0,+0	1.000	1.500	1.0	-
TextField	disabled	dark	+0,+0	1.015	1.018	0.7	-
TextField	disabled	light	+0,+0	1.015	1.018	0.7	-
Tabs	normal	light	+0,+1	1.000	0.984	0.5	-
Slider	normal	dark	+1,+0	0.996	1.000	0.5	-
Slider	normal	light	+1,+0	0.996	1.000	0.5	-
Tabs	normal	dark	+0,+0	1.000	1.000	0.0	-
Slider	disabled	dark	+0,+0	1.000	1.000	0.0	-
Slider	disabled	light	+0,+0	1.000	1.000	0.0	-

Side-by-side comparisons (worst first)

FlatButton_pressed_dark -- 91.25% fidelity (SSIM 0.8985) (no change)

Left: native widget. Right: Codename One render.
Tabs_normal_light -- 92.28% fidelity (SSIM 0.9140) (no change)

Left: native widget. Right: Codename One render.
Button_pressed_dark -- 92.61% fidelity (SSIM 0.9485) (no change)

Left: native widget. Right: Codename One render.
FlatButton_normal_dark -- 93.24% fidelity (SSIM 0.9381) (no change)

Left: native widget. Right: Codename One render.
Button_disabled_dark -- 93.26% fidelity (SSIM 0.9278) (no change)

Left: native widget. Right: Codename One render.
Button_pressed_light -- 93.34% fidelity (SSIM 0.9521) (no change)

Left: native widget. Right: Codename One render.
FlatButton_normal_light -- 93.72% fidelity (SSIM 0.9410) (no change)

Left: native widget. Right: Codename One render.
FlatButton_pressed_light -- 93.77% fidelity (SSIM 0.9424) (no change)

Left: native widget. Right: Codename One render.
FloatingActionButton_pressed_light -- 94.44% fidelity (SSIM 0.9273) (no change)

Left: native widget. Right: Codename One render.
RadioButton_normal_dark -- 94.46% fidelity (SSIM 0.9630) (no change)

Left: native widget. Right: Codename One render.
RadioButton_normal_light -- 94.69% fidelity (SSIM 0.9643) (no change)

Left: native widget. Right: Codename One render.
CheckBox_selected_dark -- 94.71% fidelity (SSIM 0.9502) (no change)

Left: native widget. Right: Codename One render.
RadioButton_selected_dark -- 94.79% fidelity (SSIM 0.9630) (no change)

Left: native widget. Right: Codename One render.
CheckBox_normal_dark -- 94.93% fidelity (SSIM 0.9516) (no change)

Left: native widget. Right: Codename One render.
Button_normal_dark -- 94.94% fidelity (SSIM 0.9491) (no change)

Left: native widget. Right: Codename One render.
CheckBox_normal_light -- 95.03% fidelity (SSIM 0.9531) (no change)

Left: native widget. Right: Codename One render.
Toolbar_normal_dark -- 95.07% fidelity (SSIM 0.9059) (no change)

Left: native widget. Right: Codename One render.
RaisedButton_pressed_dark -- 95.19% fidelity (SSIM 0.9501) (no change)

Left: native widget. Right: Codename One render.
CheckBox_disabled_dark -- 95.20% fidelity (SSIM 0.9538) (no change)

Left: native widget. Right: Codename One render.
CheckBox_disabled_light -- 95.21% fidelity (SSIM 0.9562) (no change)

Left: native widget. Right: Codename One render.
Tabs_normal_dark -- 95.23% fidelity (SSIM 0.9125) (no change)

Left: native widget. Right: Codename One render.
RadioButton_disabled_dark -- 95.29% fidelity (SSIM 0.9630) (no change)

Left: native widget. Right: Codename One render.
RadioButton_selected_light -- 95.33% fidelity (SSIM 0.9642) (no change)

Left: native widget. Right: Codename One render.
CheckBox_selected_light -- 95.37% fidelity (SSIM 0.9524) (no change)

Left: native widget. Right: Codename One render.
Switch_selected_light -- 95.37% fidelity (SSIM 0.9658) (no change)

Left: native widget. Right: Codename One render.
Switch_selected_dark -- 95.45% fidelity (SSIM 0.9656) (no change)

Left: native widget. Right: Codename One render.
RadioButton_disabled_light -- 95.46% fidelity (SSIM 0.9657) (no change)

Left: native widget. Right: Codename One render.
Switch_disabled_dark -- 95.57% fidelity (SSIM 0.9613) (no change)

Left: native widget. Right: Codename One render.
Dialog_normal_light -- 95.65% fidelity (SSIM 0.9300) (no change)

Left: native widget. Right: Codename One render.
RaisedButton_pressed_light -- 95.78% fidelity (SSIM 0.9578) (no change)

Left: native widget. Right: Codename One render.
Button_normal_light -- 95.79% fidelity (SSIM 0.9528) (no change)

Left: native widget. Right: Codename One render.
Dialog_normal_dark -- 95.79% fidelity (SSIM 0.9322) (no change)

Left: native widget. Right: Codename One render.
Switch_normal_light -- 95.97% fidelity (SSIM 0.9612) (no change)

Left: native widget. Right: Codename One render.
FloatingActionButton_normal_light -- 96.09% fidelity (SSIM 0.9367) (no change)

Left: native widget. Right: Codename One render.
FloatingActionButton_pressed_dark -- 96.16% fidelity (SSIM 0.9513) (no change)

Left: native widget. Right: Codename One render.
Switch_normal_dark -- 96.17% fidelity (SSIM 0.9616) (no change)

Left: native widget. Right: Codename One render.
TextField_disabled_dark -- 96.21% fidelity (SSIM 0.9648) (no change)

Left: native widget. Right: Codename One render.
RaisedButton_normal_dark -- 96.41% fidelity (SSIM 0.9516) (no change)

Left: native widget. Right: Codename One render.
Switch_disabled_light -- 96.43% fidelity (SSIM 0.9698) (no change)

Left: native widget. Right: Codename One render.
Button_disabled_light -- 96.80% fidelity (SSIM 0.9596) (no change)

Left: native widget. Right: Codename One render.
ProgressBar_normal_dark -- 96.91% fidelity (SSIM 0.9669) (no change)

Left: native widget. Right: Codename One render.
RaisedButton_disabled_dark -- 97.02% fidelity (SSIM 0.9549) (no change)

Left: native widget. Right: Codename One render.
FloatingActionButton_normal_dark -- 97.07% fidelity (SSIM 0.9521) (no change)

Left: native widget. Right: Codename One render.
ProgressBar_normal_light -- 97.26% fidelity (SSIM 0.9739) (no change)

Left: native widget. Right: Codename One render.
RaisedButton_disabled_light -- 97.26% fidelity (SSIM 0.9611) (no change)

Left: native widget. Right: Codename One render.
TextField_disabled_light -- 97.29% fidelity (SSIM 0.9649) (no change)

Left: native widget. Right: Codename One render.
RaisedButton_normal_light -- 97.32% fidelity (SSIM 0.9613) (no change)

Left: native widget. Right: Codename One render.
TextField_normal_dark -- 97.61% fidelity (SSIM 0.9583) (no change)

Left: native widget. Right: Codename One render.
TextField_normal_light -- 97.62% fidelity (SSIM 0.9582) (no change)

Left: native widget. Right: Codename One render.
Slider_normal_dark -- 98.39% fidelity (SSIM 0.9900) (no change)

Left: native widget. Right: Codename One render.
Toolbar_normal_light -- 98.69% fidelity (SSIM 0.9739) (no change)

Left: native widget. Right: Codename One render.
Slider_normal_light -- 98.95% fidelity (SSIM 0.9908) (no change)

Left: native widget. Right: Codename One render.
Slider_disabled_dark -- 99.56% fidelity (SSIM 0.9927) (no change)

Left: native widget. Right: Codename One render.
Slider_disabled_light -- 99.59% fidelity (SSIM 0.9932) (no change)

Left: native widget. Right: Codename One render.

github-actions · 2026-10-29T21:01:40Z

Cloudflare Preview

URL: https://pr-6132-website-preview.codenameone.pages.dev
Branch: pr-6132-website-preview

shai-almog · 2026-10-29T21:21:40Z

Native fidelity (iOS Modern, Metal)

68 pairs compared -- median 95.0%, worst 83.5% (Tabs_normal_dark), 25th pct 92.5%, mean 94.6%.

Distribution -- >=99%: 3 | 95-99%: 31 | 90-95%: 29 | <90%: 5

Component	State	Appearance	Material	Fidelity	SSIM	mean delta	vs base	Geometry
Tabs	normal	dark	glass	83.5%	0.884	11.66	0.0	ok
Tabs	normal	light	glass	86.4%	0.896	8.00	0.0	ok
Toolbar	normal	light	glass	87.6%	0.951	4.24	0.0	ok
Toolbar	normal	dark	glass	87.7%	0.950	3.69	0.0	ok
Button	pressed	dark	glass	89.9%	0.958	4.21	0.0	OFF (off 12px, w 1.10)
TextField	normal	light	normal	90.0%	0.958	2.78	-0.4	ok
Spinner	normal	dark	normal	90.8%	0.881	3.39	-0.7	ok
TextField	disabled	light	normal	91.1%	0.962	2.24	-0.2	ok
Spinner	normal	light	normal	91.6%	0.910	4.11	-0.2	ok
RaisedButton	disabled	light	glass	91.8%	0.961	3.09	+0.2	ok
Button	normal	dark	glass	91.8%	0.958	3.52	0.0	OFF (off 12px, w 1.10)
Slider	disabled	dark	normal	92.1%	0.943	2.45	-0.3	ok
Switch	selected	light	normal	92.1%	0.981	1.47	0.0	ok
CheckBox	normal	light	normal	92.2%	0.994	0.68	0.0	ok
RadioButton	normal	light	normal	92.2%	0.994	0.68	0.0	ok
FlatButton	normal	dark	glass	92.2%	0.983	2.21	+4.3	ok
Button	normal	light	glass	92.4%	0.961	3.65	0.0	OFF (off 12px, w 1.10)
Slider	normal	dark	normal	92.5%	0.944	2.63	-0.2	ok
RaisedButton	disabled	dark	glass	92.7%	0.965	2.72	+1.3	ok
CheckBox	disabled	light	normal	92.7%	0.995	0.50	0.0	ok
RadioButton	disabled	light	normal	92.7%	0.995	0.50	0.0	ok
Button	pressed	light	glass	92.9%	0.962	3.29	0.0	OFF (off 12px, w 1.10)
FlatButton	pressed	dark	glass	92.9%	0.985	1.26	+2.3	ok
TabsGeom	normal	dark	normal	93.0%	0.892	8.75	0.0	ok
TabsGeom	normal	light	normal	93.0%	0.886	7.09	0.0	ok
FlatButton	pressed	light	glass	93.2%	0.982	1.90	+4.3	ok
Button	disabled	dark	glass	93.5%	0.962	2.47	0.0	OFF (off 12px, w 1.10)
Slider	disabled	light	normal	94.0%	0.963	1.75	-0.1	OFF (h 4.50)
FlatButton	normal	light	glass	94.2%	0.983	1.79	+1.3	ok
Button	disabled	light	glass	94.4%	0.964	2.36	0.0	OFF (off 12px, w 1.10)
RaisedButton	pressed	dark	glass	94.6%	0.965	2.07	+1.5	ok
RaisedButton	normal	dark	glass	94.6%	0.966	2.08	+1.7	ok
RaisedButton	pressed	light	glass	94.8%	0.967	2.22	+2.0	ok
RadioButton	selected	light	normal	94.8%	0.992	0.86	0.0	ok
RaisedButton	normal	light	glass	95.0%	0.967	2.19	+2.4	ok
Slider	normal	light	normal	95.1%	0.959	1.56	0.0	ok
Switch	normal	light	normal	95.5%	0.986	0.70	0.0	ok
CheckBox	disabled	dark	normal	95.8%	0.993	0.25	0.0	ok
RadioButton	disabled	dark	normal	95.8%	0.993	0.25	0.0	ok
CheckBox	selected	light	normal	95.8%	0.994	0.67	0.0	ok
Switch	selected	dark	normal	95.9%	0.985	1.02	0.0	ok
Switch	disabled	light	normal	96.4%	0.990	0.53	0.0	ok
CheckBox	normal	dark	normal	96.5%	0.993	0.35	0.0	ok
RadioButton	normal	dark	normal	96.5%	0.993	0.35	0.0	ok
GlassPanelPhoto	normal	light	glass	96.7%	0.980	7.95	+0.6	ok
GlassPanelPhoto	normal	dark	glass	96.8%	0.983	8.78	+0.6	ok
TabOne	normal	dark	normal	96.8%	0.953	4.44	+0.7	ok
Switch	normal	dark	normal	96.8%	0.986	0.82	0.0	ok
RadioButton	selected	dark	normal	96.8%	0.991	0.57	0.0	ok
TextField	normal	dark	normal	96.9%	0.949	3.30	-0.2	ok
TextField	disabled	dark	normal	97.2%	0.953	2.37	-0.2	ok
ProgressBar	normal	dark	normal	97.5%	0.997	0.60	+3.0	ok
TabOne	normal	light	normal	97.5%	0.961	2.90	+1.9	ok
ProgressBar	normal	light	normal	97.6%	0.999	0.61	+2.2	ok
CheckBox	selected	dark	normal	97.8%	0.993	0.38	0.0	ok
Dialog	normal	dark	normal	97.9%	0.961	1.38	+0.9	ok
Dialog	normal	light	normal	98.0%	0.963	1.42	+0.9	ok
Switch	disabled	dark	normal	98.0%	0.987	0.41	+2.5	ok
GlassIcon	normal	dark	normal	98.6%	0.984	3.55	0.0	ok
GlassText	normal	dark	normal	98.6%	0.985	3.48	0.0	ok
GlassIcon	normal	light	normal	98.7%	0.986	3.54	0.0	ok
GlassText	normal	light	normal	98.7%	0.987	3.54	0.0	ok
GlassPanelGrad	normal	light	normal	98.9%	0.994	4.38	+0.7	ok
GlassPanelGrad	normal	dark	normal	99.0%	0.993	3.84	+0.5	ok
GlassPanelGrey	normal	dark	normal	99.0%	0.992	3.30	+0.6	ok
GlassPanelGrey	normal	light	normal	99.1%	0.994	3.29	+0.7	ok
GlassPanelRed	normal	dark	normal	99.1%	0.993	3.22	+0.5	ok
GlassPanelRed	normal	light	normal	99.1%	0.994	3.49	+0.7	ok

Geometry vs native (bbox offset / size ratio / center offset / corner radius) -- gated separately from the visual score

Component	State	Appearance	bbox dx,dy (px)	w ratio	h ratio	center off (px)	radius native->cn1 (px)
Button	pressed	dark	+0,+0	1.104	1.000	11.5	45.4 -> 45.3
Button	normal	dark	+0,+0	1.104	1.000	11.5	45.8 -> 45.2
Button	normal	light	+0,+0	1.104	1.000	11.5	44.5 -> 45.3
Button	pressed	light	+0,+0	1.104	1.000	11.5	48.1 -> 45.4
Button	disabled	dark	+0,+0	1.104	1.000	11.5	45.1 -> 45.2
Button	disabled	light	+0,+0	1.104	1.000	11.5	44.0 -> 45.3
TabOne	normal	dark	-3,+0	1.007	0.948	4.9	80.3 -> 77.3
TabOne	normal	light	-3,+0	1.007	0.948	4.9	79.1 -> 77.0
Toolbar	normal	light	+4,+7	0.987	0.926	3.5	62.5 -> 56.1
Toolbar	normal	dark	+4,+7	0.987	0.919	3.2	60.5 -> 55.5
Switch	selected	light	+0,+0	1.028	1.026	2.7	-
RaisedButton	disabled	dark	+0,+0	1.024	1.011	2.6	49.8 -> 46.1
Slider	disabled	light	+0,-29	1.000	4.500	2.5	-
CheckBox	disabled	light	+1,-3	1.000	1.023	2.2	-
RadioButton	disabled	light	+1,-3	1.000	1.023	2.2	-
CheckBox	disabled	dark	+1,-3	1.000	1.023	2.2	-
RadioButton	disabled	dark	+1,-3	1.000	1.023	2.2	-
RaisedButton	disabled	light	+0,+0	1.019	1.011	2.1	54.1 -> 96.6
RaisedButton	pressed	dark	+0,+0	1.019	1.011	2.1	44.5 -> 44.3
RaisedButton	normal	dark	+0,+0	1.019	1.011	2.1	44.4 -> 44.3
RaisedButton	pressed	light	+0,+0	1.019	1.011	2.1	44.7 -> 44.3
RaisedButton	normal	light	+0,+0	1.019	1.011	2.1	44.5 -> 44.1
Switch	normal	light	+0,+0	1.023	1.013	2.1	-
Switch	disabled	light	+0,+0	1.023	1.013	2.1	-
Switch	normal	dark	+0,+0	1.023	1.013	2.1	-
Switch	disabled	dark	+0,+0	1.023	1.013	2.1	-
CheckBox	normal	dark	+0,-2	1.000	1.000	2.0	-
RadioButton	normal	dark	+0,-2	1.000	1.000	2.0	-
RadioButton	selected	dark	+0,-2	1.000	1.000	2.0	-
CheckBox	selected	dark	+0,-2	1.000	1.000	2.0	-
Tabs	normal	dark	+9,+0	0.973	1.012	1.8	79.7 -> 80.7
Tabs	normal	light	+9,+0	0.973	1.012	1.8	79.2 -> 80.3
TabsGeom	normal	dark	+9,+0	0.973	1.012	1.8	80.5 -> 80.9
TabsGeom	normal	light	+9,+0	0.973	1.012	1.8	79.3 -> 80.6
FlatButton	normal	dark	+4,+0	0.966	1.011	1.6	91.8 -> 95.7
FlatButton	pressed	dark	+4,+0	0.966	1.011	1.6	95.3 -> 97.9
Switch	selected	dark	+0,+0	1.017	1.013	1.6	-
CheckBox	normal	light	+0,-2	1.000	1.011	1.5	-
RadioButton	normal	light	+0,-2	1.000	1.011	1.5	-
RadioButton	selected	light	+0,-2	1.000	1.011	1.5	-
CheckBox	selected	light	+0,-2	1.000	1.011	1.5	-
Spinner	normal	light	+11,-9	0.978	1.055	1.1	-
GlassIcon	normal	dark	+0,+1	0.999	1.000	1.1	92.1 -> 91.5
GlassText	normal	dark	+0,+1	0.999	1.000	1.1	92.1 -> 91.5
Spinner	normal	dark	+12,-9	0.977	1.055	1.0	-
GlassPanelGrey	normal	dark	+0,+1	1.000	1.000	1.0	26.4 -> 26.9
TextField	disabled	light	+0,+1	0.999	0.996	0.7	13.9 -> 38.7
FlatButton	normal	light	+0,+0	0.993	1.011	0.7	91.9 -> 51.8
Slider	disabled	dark	+0,-1	1.000	1.015	0.5	-
FlatButton	pressed	light	+1,+0	0.986	1.011	0.5	95.4 -> 65.6
Slider	normal	light	+0,+1	1.000	0.964	0.5	-
GlassPanelPhoto	normal	light	+0,+0	1.000	1.005	0.5	25.6 -> 31.4
GlassPanelPhoto	normal	dark	+0,+0	1.000	1.005	0.5	23.0 -> 27.0
ProgressBar	normal	dark	+0,+0	1.000	0.900	0.5	-
ProgressBar	normal	light	+0,+0	1.000	0.900	0.5	-
GlassIcon	normal	light	+0,+0	1.000	1.005	0.5	91.6 -> 92.3
GlassText	normal	light	+0,+0	1.000	1.005	0.5	91.6 -> 92.3
GlassPanelGrad	normal	light	+0,+0	1.000	1.005	0.5	22.3 -> 25.9
GlassPanelGrad	normal	dark	+1,+1	0.998	0.995	0.5	25.7 -> 22.5
GlassPanelGrey	normal	light	+0,+0	1.000	1.005	0.5	22.4 -> 26.0
GlassPanelRed	normal	dark	+1,+1	0.998	0.995	0.5	26.6 -> 22.8
GlassPanelRed	normal	light	+0,+0	1.000	1.005	0.5	22.1 -> 26.1
TextField	normal	light	+0,+0	1.000	1.000	0.0	13.4 -> 40.5
Slider	normal	dark	+0,+0	1.000	1.000	0.0	-
TextField	normal	dark	+0,+0	1.000	1.000	0.0	6.4 -> 15.1
TextField	disabled	dark	+0,+0	1.000	1.000	0.0	6.4 -> 15.9
Dialog	normal	dark	+0,+0	1.000	1.000	0.0	-
Dialog	normal	light	+0,+0	1.000	1.000	0.0	-

Side-by-side comparisons (worst first)

Tabs_normal_dark -- 83.45% fidelity (SSIM 0.8842) (no change)

Left: native widget. Right: Codename One render.
Tabs_normal_light -- 86.44% fidelity (SSIM 0.8961) (no change)

Left: native widget. Right: Codename One render.
Toolbar_normal_light -- 87.64% fidelity (SSIM 0.9511) (no change)

Left: native widget. Right: Codename One render.
Toolbar_normal_dark -- 87.70% fidelity (SSIM 0.9495) (no change)

Left: native widget. Right: Codename One render.
Button_pressed_dark -- 89.93% fidelity (SSIM 0.9576) (no change)

Left: native widget. Right: Codename One render.
TextField_normal_light -- 90.03% fidelity (SSIM 0.9576) (-0.37 vs baseline)

Left: native widget. Right: Codename One render.
Spinner_normal_dark -- 90.78% fidelity (SSIM 0.8814) (-0.69 vs baseline)

Left: native widget. Right: Codename One render.
TextField_disabled_light -- 91.13% fidelity (SSIM 0.9619) (-0.22 vs baseline)

Left: native widget. Right: Codename One render.
Spinner_normal_light -- 91.58% fidelity (SSIM 0.9099) (-0.21 vs baseline)

Left: native widget. Right: Codename One render.
RaisedButton_disabled_light -- 91.76% fidelity (SSIM 0.9613) (+0.15 vs baseline)

Left: native widget. Right: Codename One render.
Button_normal_dark -- 91.84% fidelity (SSIM 0.9583) (no change)

Left: native widget. Right: Codename One render.
Slider_disabled_dark -- 92.13% fidelity (SSIM 0.9434) (-0.31 vs baseline)

Left: native widget. Right: Codename One render.
Switch_selected_light -- 92.13% fidelity (SSIM 0.9806) (no change)

Left: native widget. Right: Codename One render.
CheckBox_normal_light -- 92.16% fidelity (SSIM 0.9938) (no change)

Left: native widget. Right: Codename One render.
RadioButton_normal_light -- 92.16% fidelity (SSIM 0.9938) (no change)

Left: native widget. Right: Codename One render.
FlatButton_normal_dark -- 92.21% fidelity (SSIM 0.9833) (+4.25 vs baseline)

Left: native widget. Right: Codename One render.
Button_normal_light -- 92.37% fidelity (SSIM 0.9609) (no change)

Left: native widget. Right: Codename One render.
Slider_normal_dark -- 92.52% fidelity (SSIM 0.9441) (-0.22 vs baseline)

Left: native widget. Right: Codename One render.
RaisedButton_disabled_dark -- 92.65% fidelity (SSIM 0.9653) (+1.25 vs baseline)

Left: native widget. Right: Codename One render.
CheckBox_disabled_light -- 92.71% fidelity (SSIM 0.9953) (no change)

Left: native widget. Right: Codename One render.
RadioButton_disabled_light -- 92.71% fidelity (SSIM 0.9953) (no change)

Left: native widget. Right: Codename One render.
Button_pressed_light -- 92.88% fidelity (SSIM 0.9617) (no change)

Left: native widget. Right: Codename One render.
FlatButton_pressed_dark -- 92.90% fidelity (SSIM 0.9849) (+2.31 vs baseline)

Left: native widget. Right: Codename One render.
TabsGeom_normal_dark -- 93.02% fidelity (SSIM 0.8921) (+0.01 vs baseline)

Left: native widget. Right: Codename One render.
TabsGeom_normal_light -- 93.02% fidelity (SSIM 0.8861) (no change)

Left: native widget. Right: Codename One render.
FlatButton_pressed_light -- 93.20% fidelity (SSIM 0.9819) (+4.33 vs baseline)

Left: native widget. Right: Codename One render.
Button_disabled_dark -- 93.52% fidelity (SSIM 0.9618) (no change)

Left: native widget. Right: Codename One render.
Slider_disabled_light -- 93.96% fidelity (SSIM 0.9625) (-0.05 vs baseline)

Left: native widget. Right: Codename One render.
FlatButton_normal_light -- 94.18% fidelity (SSIM 0.9825) (+1.32 vs baseline)

Left: native widget. Right: Codename One render.
Button_disabled_light -- 94.35% fidelity (SSIM 0.9636) (no change)

Left: native widget. Right: Codename One render.
RaisedButton_pressed_dark -- 94.56% fidelity (SSIM 0.9653) (+1.46 vs baseline)

Left: native widget. Right: Codename One render.
RaisedButton_normal_dark -- 94.57% fidelity (SSIM 0.9659) (+1.69 vs baseline)

Left: native widget. Right: Codename One render.
RaisedButton_pressed_light -- 94.80% fidelity (SSIM 0.9665) (+2.04 vs baseline)

Left: native widget. Right: Codename One render.
RadioButton_selected_light -- 94.84% fidelity (SSIM 0.9916) (no change)

Left: native widget. Right: Codename One render.
RaisedButton_normal_light -- 95.01% fidelity (SSIM 0.9673) (+2.40 vs baseline)

Left: native widget. Right: Codename One render.
Slider_normal_light -- 95.09% fidelity (SSIM 0.9588) (-0.04 vs baseline)

Left: native widget. Right: Codename One render.
Switch_normal_light -- 95.51% fidelity (SSIM 0.9863) (no change)

Left: native widget. Right: Codename One render.
CheckBox_disabled_dark -- 95.76% fidelity (SSIM 0.9928) (no change)

Left: native widget. Right: Codename One render.
RadioButton_disabled_dark -- 95.76% fidelity (SSIM 0.9928) (no change)

Left: native widget. Right: Codename One render.
CheckBox_selected_light -- 95.80% fidelity (SSIM 0.9938) (no change)

Left: native widget. Right: Codename One render.
Switch_selected_dark -- 95.90% fidelity (SSIM 0.9850) (no change)

Left: native widget. Right: Codename One render.
Switch_disabled_light -- 96.35% fidelity (SSIM 0.9896) (+0.04 vs baseline)

Left: native widget. Right: Codename One render.
CheckBox_normal_dark -- 96.52% fidelity (SSIM 0.9927) (no change)

Left: native widget. Right: Codename One render.
RadioButton_normal_dark -- 96.52% fidelity (SSIM 0.9927) (no change)

Left: native widget. Right: Codename One render.
GlassPanelPhoto_normal_light -- 96.72% fidelity (SSIM 0.9804) (+0.64 vs baseline)

Left: native widget. Right: Codename One render.
GlassPanelPhoto_normal_dark -- 96.76% fidelity (SSIM 0.9832) (+0.59 vs baseline)

Left: native widget. Right: Codename One render.
TabOne_normal_dark -- 96.77% fidelity (SSIM 0.9526) (+0.73 vs baseline)

Left: native widget. Right: Codename One render.
Switch_normal_dark -- 96.80% fidelity (SSIM 0.9855) (no change)

Left: native widget. Right: Codename One render.
RadioButton_selected_dark -- 96.81% fidelity (SSIM 0.9908) (no change)

Left: native widget. Right: Codename One render.
TextField_normal_dark -- 96.88% fidelity (SSIM 0.9492) (-0.20 vs baseline)

Left: native widget. Right: Codename One render.
TextField_disabled_dark -- 97.19% fidelity (SSIM 0.9526) (-0.15 vs baseline)

Left: native widget. Right: Codename One render.
ProgressBar_normal_dark -- 97.47% fidelity (SSIM 0.9973) (+3.03 vs baseline)

Left: native widget. Right: Codename One render.
TabOne_normal_light -- 97.51% fidelity (SSIM 0.9608) (+1.89 vs baseline)

Left: native widget. Right: Codename One render.
ProgressBar_normal_light -- 97.60% fidelity (SSIM 0.9989) (+2.19 vs baseline)

Left: native widget. Right: Codename One render.
CheckBox_selected_dark -- 97.79% fidelity (SSIM 0.9932) (no change)

Left: native widget. Right: Codename One render.
Dialog_normal_dark -- 97.86% fidelity (SSIM 0.9614) (+0.89 vs baseline)

Left: native widget. Right: Codename One render.
Dialog_normal_light -- 97.95% fidelity (SSIM 0.9634) (+0.86 vs baseline)

Left: native widget. Right: Codename One render.
Switch_disabled_dark -- 98.01% fidelity (SSIM 0.9869) (+2.48 vs baseline)

Left: native widget. Right: Codename One render.
GlassIcon_normal_dark -- 98.59% fidelity (SSIM 0.9841) (no change)

Left: native widget. Right: Codename One render.
GlassText_normal_dark -- 98.64% fidelity (SSIM 0.9848) (+0.05 vs baseline)

Left: native widget. Right: Codename One render.
GlassIcon_normal_light -- 98.67% fidelity (SSIM 0.9860) (no change)

Left: native widget. Right: Codename One render.
GlassText_normal_light -- 98.74% fidelity (SSIM 0.9874) (+0.05 vs baseline)

Left: native widget. Right: Codename One render.
GlassPanelGrad_normal_light -- 98.91% fidelity (SSIM 0.9935) (+0.67 vs baseline)

Left: native widget. Right: Codename One render.
GlassPanelGrad_normal_dark -- 98.98% fidelity (SSIM 0.9928) (+0.55 vs baseline)

Left: native widget. Right: Codename One render.
GlassPanelGrey_normal_dark -- 98.99% fidelity (SSIM 0.9917) (+0.57 vs baseline)

Left: native widget. Right: Codename One render.
GlassPanelGrey_normal_light -- 99.05% fidelity (SSIM 0.9936) (+0.67 vs baseline)

Left: native widget. Right: Codename One render.
GlassPanelRed_normal_dark -- 99.09% fidelity (SSIM 0.9926) (+0.52 vs baseline)

Left: native widget. Right: Codename One render.
GlassPanelRed_normal_light -- 99.10% fidelity (SSIM 0.9939) (+0.67 vs baseline)

Left: native widget. Right: Codename One render.

github-actions · 2026-10-29T21:33:15Z

✅ Continuous Quality Report

Test & Coverage

✅ Tests: 14796 total, 0 failed, 161 skipped
📊 Line coverage: 65.75% [HTML preview] [Download]
- Lowest covered classes
  - com.codename1.io.zip.ZipArchiveOutputStream – 0.00%
  - com.codename1.gaming.level.GameSceneView – 0.00%
  - com.codename1.security.NativeCryptoEngine – 0.00%
  - com.codename1.crash.CrashProtection – 0.00%
  - com.codename1.mapping.JsonValues – 0.00%
  - com.codename1.payment.CommerceManager – 0.00%
  - com.codename1.io.outbox.Outbox – 0.00%
  - com.codename1.security.CertificateRequest – 0.00%
  - com.codename1.wearable.WearableMessage – 0.00%
  - com.codename1.ui.plaf.GlassLensBlend – 0.00%

Static Analysis

SpotBugs [Report archive]
- ✅ ByteCodeTranslator: 0 findings (no issues)
- ✅ android: 0 findings (no issues)
- ✅ android-compat: 0 findings (no issues)
- ✅ android-res-compiler: 0 findings (no issues)
- ✅ backend: 0 findings (no issues)
- ✅ backend-test: 0 findings (no issues)
- ✅ build-engine: 0 findings (no issues)
- ✅ build-hint-catalog: 0 findings (no issues)
- ✅ build-hint-tools: 0 findings (no issues)
- ✅ codenameone-gradle-plugin: 0 findings (no issues)
- ✅ codenameone-maven-plugin: 0 findings (no issues)
- ✅ compose-compat: 0 findings (no issues)
- ✅ core-unittests: 0 findings (no issues)
- ✅ desktop-compat-runtime: 0 findings (no issues)
- ✅ fxml-compiler: 0 findings (no issues)
- ✅ ios: 0 findings (no issues)
- ✅ javac: 0 findings (no issues)
- ✅ javafx-compat: 0 findings (no issues)
- ✅ project-model: 0 findings (no issues)
- ✅ swing-compat: 0 findings (no issues)
✅ PMD: 0 findings (no issues) [Report archive]
✅ Checkstyle: 0 findings (no issues) [Report archive]

Generated automatically by the PR CI workflow.

shai-almog · 2026-10-29T21:36:29Z

Native fidelity (ios-27-metal)

68 pairs compared -- median 94.6%, worst 74.5% (Toolbar_normal_dark), 25th pct 91.7%, mean 93.3%.

Distribution -- >=99%: 0 | 95-99%: 31 | 90-95%: 25 | <90%: 12

Component	State	Appearance	Material	Fidelity	SSIM	mean delta	vs base	Geometry
Toolbar	normal	dark	glass	74.5%	0.930	7.16	0.0	ok
Button	normal	dark	glass	79.3%	0.938	7.66	0.0	OFF (off 11px)
Button	disabled	dark	glass	79.6%	0.942	7.41	0.0	OFF (off 11px)
RaisedButton	disabled	dark	glass	81.2%	0.954	6.32	0.0	ok
Tabs	normal	dark	glass	86.2%	0.900	6.73	+0.3	ok
Button	pressed	dark	glass	86.3%	0.948	5.27	0.0	OFF (off 11px)
Tabs	normal	light	glass	86.4%	0.895	7.61	+0.3	ok
TextField	normal	light	normal	86.5%	0.950	3.38	0.0	ok
Toolbar	normal	light	glass	86.9%	0.949	3.85	0.0	ok
TextField	disabled	light	normal	89.4%	0.954	2.56	0.0	ok
Button	normal	light	glass	89.5%	0.959	4.54	0.0	OFF (off 11px)
Button	pressed	light	glass	89.5%	0.959	4.33	0.0	OFF (off 11px)
Spinner	normal	dark	normal	90.7%	0.880	3.47	0.0	ok
FlatButton	normal	dark	glass	90.9%	0.981	2.38	0.0	ok
Button	disabled	light	glass	91.6%	0.962	3.21	0.0	OFF (off 11px)
Spinner	normal	light	normal	91.6%	0.910	4.20	0.0	ok
CheckBox	normal	light	normal	91.7%	0.994	0.72	0.0	ok
RadioButton	normal	light	normal	91.7%	0.994	0.72	0.0	ok
Slider	disabled	dark	normal	92.1%	0.943	2.45	0.0	ok
Switch	selected	light	normal	92.1%	0.981	1.47	0.0	ok
CheckBox	disabled	light	normal	92.3%	0.995	0.52	0.0	ok
RadioButton	disabled	light	normal	92.3%	0.995	0.52	0.0	ok
FlatButton	pressed	dark	glass	92.4%	0.982	1.37	0.0	ok
RaisedButton	disabled	light	glass	92.4%	0.960	2.43	0.0	ok
Slider	normal	dark	normal	92.5%	0.944	2.63	0.0	ok
TabsGeom	normal	light	normal	93.1%	0.885	6.48	+0.1	OFF (off 6px)
FlatButton	pressed	light	glass	93.3%	0.981	1.90	0.0	ok
TabsGeom	normal	dark	normal	93.8%	0.893	4.47	+0.1	ok
FlatButton	normal	light	glass	93.9%	0.981	1.88	0.0	ok
Slider	disabled	light	normal	94.0%	0.963	1.75	0.0	OFF (h 4.50)
RaisedButton	pressed	dark	glass	94.1%	0.966	2.29	0.0	ok
RaisedButton	normal	dark	glass	94.1%	0.966	2.32	0.0	ok
RadioButton	selected	light	normal	94.3%	0.990	0.95	0.0	ok
RaisedButton	pressed	light	glass	94.5%	0.963	2.16	0.0	ok
GlassPanelPhoto	normal	dark	glass	94.6%	0.951	13.16	0.0	ok
RaisedButton	normal	light	glass	94.6%	0.963	2.17	0.0	ok
GlassPanelPhoto	normal	light	glass	94.7%	0.951	11.57	0.0	ok
Slider	normal	light	normal	95.1%	0.959	1.56	0.0	ok
CheckBox	disabled	dark	normal	95.4%	0.992	0.25	0.0	ok
RadioButton	disabled	dark	normal	95.4%	0.992	0.25	0.0	ok
Switch	normal	light	normal	95.5%	0.986	0.70	0.0	ok
CheckBox	selected	light	normal	95.8%	0.995	0.65	0.0	ok
CheckBox	normal	dark	normal	95.8%	0.992	0.39	0.0	ok
RadioButton	normal	dark	normal	95.8%	0.992	0.39	0.0	ok
Switch	selected	dark	normal	95.9%	0.985	1.02	0.0	ok
TextField	normal	dark	normal	96.0%	0.937	4.53	0.0	ok
RadioButton	selected	dark	normal	96.1%	0.989	0.67	0.0	ok
Switch	disabled	light	normal	96.4%	0.990	0.53	0.0	ok
TextField	disabled	dark	normal	96.4%	0.940	3.39	0.0	ok
Switch	normal	dark	normal	96.8%	0.986	0.82	0.0	ok
TabOne	normal	light	normal	96.9%	0.948	2.57	0.0	OFF (off 6px, w 0.86)
GlassIcon	normal	dark	normal	97.2%	0.955	3.32	0.0	ok
GlassText	normal	dark	normal	97.3%	0.956	3.27	+0.1	ok
GlassPanelGrey	normal	dark	normal	97.4%	0.959	3.41	0.0	ok
TabOne	normal	dark	normal	97.4%	0.953	1.49	0.0	OFF (w 0.86)
ProgressBar	normal	dark	normal	97.5%	0.997	0.60	0.0	ok
ProgressBar	normal	light	normal	97.6%	0.999	0.61	0.0	ok
GlassPanelRed	normal	dark	normal	97.7%	0.980	6.75	0.0	ok
CheckBox	selected	dark	normal	97.9%	0.995	0.37	0.0	ok
Dialog	normal	dark	normal	97.9%	0.961	1.38	0.0	ok
GlassPanelGrad	normal	dark	normal	97.9%	0.975	4.86	0.0	ok
Dialog	normal	light	normal	98.0%	0.963	1.42	0.0	ok
Switch	disabled	dark	normal	98.0%	0.987	0.41	0.0	ok
GlassIcon	normal	light	normal	98.2%	0.975	3.65	0.0	ok
GlassText	normal	light	normal	98.3%	0.978	3.58	+0.1	ok
GlassPanelGrad	normal	light	normal	98.4%	0.988	5.52	0.0	ok
GlassPanelGrey	normal	light	normal	98.7%	0.987	3.64	0.0	ok
GlassPanelRed	normal	light	normal	98.8%	0.990	4.14	0.0	ok

Geometry vs native (bbox offset / size ratio / center offset / corner radius) -- gated separately from the visual score

Component	State	Appearance	bbox dx,dy (px)	w ratio	h ratio	center off (px)	radius native->cn1 (px)
Button	normal	dark	+0,-6	1.094	1.067	10.9	90.5 -> 45.2
Button	disabled	dark	+0,-6	1.094	1.067	10.9	92.0 -> 45.2
Button	pressed	dark	+0,-6	1.094	1.080	10.8	79.4 -> 45.3
Button	normal	light	+0,+0	1.094	1.000	10.5	45.7 -> 45.3
Button	pressed	light	+0,+0	1.094	1.000	10.5	87.5 -> 45.4
Button	disabled	light	+0,+0	1.094	1.000	10.5	49.1 -> 45.3
TabsGeom	normal	light	+3,+0	0.990	1.069	6.1	79.8 -> 83.6
TabOne	normal	light	+19,+0	0.863	1.069	6.1	80.9 -> 83.6
TabsGeom	normal	dark	+3,+0	0.990	1.064	5.6	98.6 -> 99.1
TabOne	normal	dark	+19,+0	0.863	1.064	5.6	95.2 -> 95.6
Tabs	normal	light	+4,+0	0.988	1.064	5.5	85.9 -> 87.9
GlassIcon	normal	dark	+1,+8	0.998	0.976	5.5	102.3 -> 102.4
GlassText	normal	dark	+1,+8	0.998	0.976	5.5	102.3 -> 102.4
Tabs	normal	dark	+4,+0	0.987	1.058	5.1	92.9 -> 93.7
Toolbar	normal	dark	+6,-3	0.983	1.009	3.5	90.3 -> 55.5
Toolbar	normal	light	+6,+7	0.984	0.926	3.2	70.9 -> 56.1
RaisedButton	disabled	dark	+0,-6	1.009	1.079	2.7	89.6 -> 46.1
Switch	selected	light	+0,+0	1.028	1.026	2.7	-
Slider	disabled	light	+0,-29	1.000	4.500	2.5	-
Switch	normal	light	+0,+0	1.023	1.013	2.1	-
Switch	disabled	light	+0,+0	1.023	1.013	2.1	-
Switch	normal	dark	+0,+0	1.023	1.013	2.1	-
Switch	disabled	dark	+0,+0	1.023	1.013	2.1	-
Spinner	normal	light	+11,-8	0.978	1.052	1.6	-
RaisedButton	disabled	light	+0,+0	1.014	1.011	1.6	71.9 -> 96.6
FlatButton	normal	light	+0,+0	0.980	1.011	1.6	86.2 -> 51.8
Switch	selected	dark	+0,+0	1.017	1.013	1.6	-
Spinner	normal	dark	+12,-8	0.977	1.052	1.5	-
CheckBox	normal	light	+0,+0	0.977	0.977	1.4	-
RadioButton	normal	light	+0,+0	0.977	0.977	1.4	-
RadioButton	selected	light	+0,+0	0.977	0.977	1.4	-
CheckBox	selected	light	+0,+0	0.977	0.977	1.4	-
CheckBox	normal	dark	+0,+0	0.977	0.977	1.4	-
RadioButton	normal	dark	+0,+0	0.977	0.977	1.4	-
RadioButton	selected	dark	+0,+0	0.977	0.977	1.4	-
CheckBox	selected	dark	+0,+0	0.977	0.977	1.4	-
FlatButton	pressed	light	+1,+0	0.973	1.011	1.1	94.6 -> 65.6
RaisedButton	pressed	dark	+0,+0	1.009	1.011	1.1	44.6 -> 44.3
RaisedButton	normal	dark	+0,+0	1.009	1.011	1.1	44.5 -> 44.3
CheckBox	disabled	dark	+1,+0	0.966	0.977	1.1	-
RadioButton	disabled	dark	+1,+0	0.966	0.977	1.1	-
RaisedButton	pressed	light	+0,+0	1.009	1.000	1.0	43.3 -> 44.3
RaisedButton	normal	light	+0,+0	1.009	1.000	1.0	43.3 -> 44.1
FlatButton	normal	dark	+4,+0	0.952	1.011	0.7	86.1 -> 95.7
FlatButton	pressed	dark	+4,+0	0.952	1.011	0.7	94.7 -> 97.9
GlassPanelPhoto	normal	light	+1,+1	0.997	0.995	0.7	35.1 -> 33.5
GlassPanelGrey	normal	light	+1,+1	0.997	0.995	0.7	30.0 -> 27.4
Slider	disabled	dark	+0,-1	1.000	1.015	0.5	-
CheckBox	disabled	light	+1,+0	0.977	0.988	0.5	-
RadioButton	disabled	light	+1,+0	0.977	0.988	0.5	-
Slider	normal	light	+0,+1	1.000	0.964	0.5	-
GlassPanelGrey	normal	dark	+1,+2	0.998	0.986	0.5	101.8 -> 102.4
ProgressBar	normal	dark	+0,+0	1.000	0.900	0.5	-
ProgressBar	normal	light	+0,+0	1.000	0.900	0.5	-
GlassPanelGrad	normal	dark	+1,+0	0.998	0.995	0.5	102.0 -> 102.1
GlassIcon	normal	light	+1,+0	0.998	1.005	0.5	91.7 -> 92.8
GlassText	normal	light	+1,+0	0.998	1.005	0.5	91.7 -> 92.8
GlassPanelGrad	normal	light	+1,+0	0.998	1.005	0.5	24.3 -> 26.8
GlassPanelRed	normal	light	+1,+0	0.998	1.005	0.5	24.4 -> 25.7
TextField	normal	light	+0,+0	1.000	1.000	0.0	13.4 -> 40.0
TextField	disabled	light	+0,+0	1.000	1.000	0.0	13.9 -> 40.4
Slider	normal	dark	+0,+0	1.000	1.000	0.0	-
GlassPanelPhoto	normal	dark	+2,+1	0.996	0.991	0.0	67.3 -> 67.5
TextField	normal	dark	+0,+0	1.000	1.000	0.0	6.4 -> 15.1
TextField	disabled	dark	+0,+0	1.000	1.000	0.0	6.4 -> 15.9
GlassPanelRed	normal	dark	+1,-2	0.998	1.020	0.0	102.2 -> 102.5
Dialog	normal	dark	+0,+0	1.000	1.000	0.0	-
Dialog	normal	light	+0,+0	1.000	1.000	0.0	-

Side-by-side comparisons (worst first)

Toolbar_normal_dark -- 74.49% fidelity (SSIM 0.9295) (no change)

Left: native widget. Right: Codename One render.
Button_normal_dark -- 79.28% fidelity (SSIM 0.9380) (no change)

Left: native widget. Right: Codename One render.
Button_disabled_dark -- 79.63% fidelity (SSIM 0.9423) (no change)

Left: native widget. Right: Codename One render.
RaisedButton_disabled_dark -- 81.15% fidelity (SSIM 0.9544) (no change)

Left: native widget. Right: Codename One render.
Tabs_normal_dark -- 86.22% fidelity (SSIM 0.8999) (+0.33 vs baseline)

Left: native widget. Right: Codename One render.
Button_pressed_dark -- 86.28% fidelity (SSIM 0.9483) (no change)

Left: native widget. Right: Codename One render.
Tabs_normal_light -- 86.43% fidelity (SSIM 0.8954) (+0.31 vs baseline)

Left: native widget. Right: Codename One render.
TextField_normal_light -- 86.49% fidelity (SSIM 0.9502) (no change)

Left: native widget. Right: Codename One render.
Toolbar_normal_light -- 86.94% fidelity (SSIM 0.9488) (no change)

Left: native widget. Right: Codename One render.
TextField_disabled_light -- 89.39% fidelity (SSIM 0.9540) (no change)

Left: native widget. Right: Codename One render.
Button_normal_light -- 89.45% fidelity (SSIM 0.9588) (no change)

Left: native widget. Right: Codename One render.
Button_pressed_light -- 89.45% fidelity (SSIM 0.9588) (no change)

Left: native widget. Right: Codename One render.
Spinner_normal_dark -- 90.72% fidelity (SSIM 0.8800) (no change)

Left: native widget. Right: Codename One render.
FlatButton_normal_dark -- 90.88% fidelity (SSIM 0.9805) (no change)

Left: native widget. Right: Codename One render.
Button_disabled_light -- 91.57% fidelity (SSIM 0.9621) (no change)

Left: native widget. Right: Codename One render.
Spinner_normal_light -- 91.58% fidelity (SSIM 0.9097) (no change)

Left: native widget. Right: Codename One render.
CheckBox_normal_light -- 91.66% fidelity (SSIM 0.9935) (no change)

Left: native widget. Right: Codename One render.
RadioButton_normal_light -- 91.66% fidelity (SSIM 0.9935) (no change)

Left: native widget. Right: Codename One render.
Slider_disabled_dark -- 92.13% fidelity (SSIM 0.9434) (no change)

Left: native widget. Right: Codename One render.
Switch_selected_light -- 92.13% fidelity (SSIM 0.9806) (no change)

Left: native widget. Right: Codename One render.
CheckBox_disabled_light -- 92.31% fidelity (SSIM 0.9948) (no change)

Left: native widget. Right: Codename One render.
RadioButton_disabled_light -- 92.31% fidelity (SSIM 0.9948) (no change)

Left: native widget. Right: Codename One render.
FlatButton_pressed_dark -- 92.38% fidelity (SSIM 0.9821) (no change)

Left: native widget. Right: Codename One render.
RaisedButton_disabled_light -- 92.40% fidelity (SSIM 0.9596) (no change)

Left: native widget. Right: Codename One render.
Slider_normal_dark -- 92.52% fidelity (SSIM 0.9441) (no change)

Left: native widget. Right: Codename One render.
TabsGeom_normal_light -- 93.13% fidelity (SSIM 0.8851) (+0.14 vs baseline)

Left: native widget. Right: Codename One render.
FlatButton_pressed_light -- 93.29% fidelity (SSIM 0.9811) (no change)

Left: native widget. Right: Codename One render.
TabsGeom_normal_dark -- 93.81% fidelity (SSIM 0.8925) (+0.14 vs baseline)

Left: native widget. Right: Codename One render.
FlatButton_normal_light -- 93.91% fidelity (SSIM 0.9811) (no change)

Left: native widget. Right: Codename One render.
Slider_disabled_light -- 93.96% fidelity (SSIM 0.9625) (no change)

Left: native widget. Right: Codename One render.
RaisedButton_pressed_dark -- 94.08% fidelity (SSIM 0.9659) (no change)

Left: native widget. Right: Codename One render.
RaisedButton_normal_dark -- 94.13% fidelity (SSIM 0.9660) (no change)

Left: native widget. Right: Codename One render.
RadioButton_selected_light -- 94.26% fidelity (SSIM 0.9903) (no change)

Left: native widget. Right: Codename One render.
RaisedButton_pressed_light -- 94.53% fidelity (SSIM 0.9633) (no change)

Left: native widget. Right: Codename One render.
GlassPanelPhoto_normal_dark -- 94.60% fidelity (SSIM 0.9505) (no change)

Left: native widget. Right: Codename One render.
RaisedButton_normal_light -- 94.64% fidelity (SSIM 0.9632) (no change)

Left: native widget. Right: Codename One render.
GlassPanelPhoto_normal_light -- 94.66% fidelity (SSIM 0.9507) (no change)

Left: native widget. Right: Codename One render.
Slider_normal_light -- 95.09% fidelity (SSIM 0.9588) (no change)

Left: native widget. Right: Codename One render.
CheckBox_disabled_dark -- 95.41% fidelity (SSIM 0.9924) (no change)

Left: native widget. Right: Codename One render.
RadioButton_disabled_dark -- 95.41% fidelity (SSIM 0.9924) (no change)

Left: native widget. Right: Codename One render.
Switch_normal_light -- 95.51% fidelity (SSIM 0.9863) (no change)

Left: native widget. Right: Codename One render.
CheckBox_selected_light -- 95.80% fidelity (SSIM 0.9951) (no change)

Left: native widget. Right: Codename One render.
CheckBox_normal_dark -- 95.84% fidelity (SSIM 0.9922) (no change)

Left: native widget. Right: Codename One render.
RadioButton_normal_dark -- 95.84% fidelity (SSIM 0.9922) (no change)

Left: native widget. Right: Codename One render.
Switch_selected_dark -- 95.90% fidelity (SSIM 0.9850) (no change)

Left: native widget. Right: Codename One render.
TextField_normal_dark -- 96.00% fidelity (SSIM 0.9370) (no change)

Left: native widget. Right: Codename One render.
RadioButton_selected_dark -- 96.13% fidelity (SSIM 0.9894) (no change)

Left: native widget. Right: Codename One render.
Switch_disabled_light -- 96.35% fidelity (SSIM 0.9896) (no change)

Left: native widget. Right: Codename One render.
TextField_disabled_dark -- 96.35% fidelity (SSIM 0.9395) (no change)

Left: native widget. Right: Codename One render.
Switch_normal_dark -- 96.80% fidelity (SSIM 0.9855) (no change)

Left: native widget. Right: Codename One render.
TabOne_normal_light -- 96.90% fidelity (SSIM 0.9480) (no change)

Left: native widget. Right: Codename One render.
GlassIcon_normal_dark -- 97.18% fidelity (SSIM 0.9547) (no change)

Left: native widget. Right: Codename One render.
GlassText_normal_dark -- 97.27% fidelity (SSIM 0.9563) (+0.06 vs baseline)

Left: native widget. Right: Codename One render.
GlassPanelGrey_normal_dark -- 97.35% fidelity (SSIM 0.9588) (no change)

Left: native widget. Right: Codename One render.
TabOne_normal_dark -- 97.36% fidelity (SSIM 0.9531) (no change)

Left: native widget. Right: Codename One render.
ProgressBar_normal_dark -- 97.47% fidelity (SSIM 0.9973) (no change)

Left: native widget. Right: Codename One render.
ProgressBar_normal_light -- 97.60% fidelity (SSIM 0.9989) (no change)

Left: native widget. Right: Codename One render.
GlassPanelRed_normal_dark -- 97.73% fidelity (SSIM 0.9795) (no change)

Left: native widget. Right: Codename One render.
CheckBox_selected_dark -- 97.85% fidelity (SSIM 0.9945) (no change)

Left: native widget. Right: Codename One render.
Dialog_normal_dark -- 97.86% fidelity (SSIM 0.9614) (no change)

Left: native widget. Right: Codename One render.
GlassPanelGrad_normal_dark -- 97.91% fidelity (SSIM 0.9752) (no change)

Left: native widget. Right: Codename One render.
Dialog_normal_light -- 97.95% fidelity (SSIM 0.9634) (no change)

Left: native widget. Right: Codename One render.
Switch_disabled_dark -- 98.01% fidelity (SSIM 0.9869) (no change)

Left: native widget. Right: Codename One render.
GlassIcon_normal_light -- 98.16% fidelity (SSIM 0.9750) (no change)

Left: native widget. Right: Codename One render.
GlassText_normal_light -- 98.31% fidelity (SSIM 0.9779) (+0.06 vs baseline)

Left: native widget. Right: Codename One render.
GlassPanelGrad_normal_light -- 98.41% fidelity (SSIM 0.9876) (no change)

Left: native widget. Right: Codename One render.
GlassPanelGrey_normal_light -- 98.70% fidelity (SSIM 0.9865) (no change)

Left: native widget. Right: Codename One render.
GlassPanelRed_normal_light -- 98.78% fidelity (SSIM 0.9900) (no change)

Left: native widget. Right: Codename One render.

shai-almog · 2026-10-29T21:46:07Z

Compared 231 screenshots: 231 matched.
✅ JavaScript-port screenshot tests passed.

shai-almog · 2026-10-29T22:29:36Z

Compared 210 screenshots: 210 matched.
Native Windows port (x64 / Intel-AMD): full hellocodenameone screenshot suite rendered offscreen with Direct2D/DirectWrite, plus the real benchmarks (base64 native/CN1/SIMD, image createMask/applyMask/modifyAlpha/PNG/JPEG, SSE2 SIMD kernels). Compared against the in-repo baseline in scripts/windows/screenshots.

Benchmark Results

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 50ms / native 4ms = 12.5x speedup
SIMD float-mul (64K x300)	java 52ms / native 4ms = 13.0x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 native bridge	unavailable (CN1 + SIMD + image benchmarks only)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	gated to scalar (CPU autovectorizes scalar; explicit SIMD not beneficial here)
Base64 CN1 encode	64.000 ms
Base64 CN1 decode	78.000 ms
Base64 SIMD encode	86.000 ms
Base64 encode ratio (SIMD/CN1)	1.344x (34.4% slower)
Base64 SIMD decode	85.000 ms
Base64 decode ratio (SIMD/CN1)	1.090x (9.0% slower)
Image encode benchmark iterations	100
Image createMask (SIMD off)	8.000 ms
Image createMask (SIMD on)	5.000 ms
Image createMask ratio (SIMD on/off)	0.625x (37.5% faster)
Image applyMask (SIMD off)	32.000 ms
Image applyMask (SIMD on)	41.000 ms
Image applyMask ratio (SIMD on/off)	1.281x (28.1% slower)
Image modifyAlpha (SIMD off)	46.000 ms
Image modifyAlpha (SIMD on)	32.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.696x (30.4% faster)
Image modifyAlpha removeColor (SIMD off)	36.000 ms
Image modifyAlpha removeColor (SIMD on)	23.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	0.639x (36.1% faster)

ParparVM vs HotSpot (JDK 25): Windows x64

Runner CPU: Intel64 Family 6 Model 207 Stepping 2, GenuineIntel (baseline windows-x64@intel64-family-6-model-207-genuineintel)

1 improvement past the baseline (not a failure; rebaseline to lock it in):

recursion on all 4 CPUs: time 0.95x against a 1.20x baseline (-21.1%, tolerance 20%)

Ratios are ParparVM / JDK 25: below 1.00x ParparVM is faster (time) or smaller (RAM). Median of 5 interleaved, paired rounds; every run's output was verified. A ratio more than 20% (time) / 25% (RAM) above its baseline in vm/selfhost/perf-baseline/ is a regression and fails; one that far below is an improvement, reported but not failed (a row whose calibration runs were noisier carries a wider tolerance), and for RAM the change must also exceed 0.05x in absolute terms. Both run unpinned on all of the runner's CPUs, with their own default thread counts.

Benchmark	Cores	Time	RAM	Status
hello (WinHelloMain)	4	1.29x (base 1.07x, +20.7%)	0.68x (base 0.86x, -21.0%)	ok
translator (self)	4	0.77x (base 0.79x, -2.1%)	0.51x (base 0.53x, -2.1%)	ok
intArithmetic	4	1.03x (base 1.02x, +0.2%)	0.06x (base 0.06x, +2.4%)	ok
longArithmetic	4	0.97x (base 0.97x, -0.5%)	0.06x (base 0.05x, +3.2%)	ok
mathTranscendental	4	0.89x (base 0.89x, +0.6%)	0.06x (base 0.06x, +2.4%)	ok
arraySequential	4	1.53x (base 1.98x, -22.7%)	0.38x (base 0.38x, +0.2%)	ok
arrayRandom	4	1.01x (base 1.01x, +0.2%)	0.23x (base 0.23x, +0.6%)	ok
objectAllocation	4	1.20x (base 1.22x, -1.3%)	0.38x (base 0.37x, +2.8%)	ok
valueEscape	4	0.13x (base 0.13x, +2.0%)	0.05x (base 0.04x, +2.2%)	ok
hashMapChurn	4	1.02x (base 1.14x, -10.6%)	0.10x (base 0.10x, +3.5%)	ok
stringBuilding	4	1.49x (base 1.42x, +5.0%)	0.27x (base 0.22x, +21.7%)	ok
recursion	4	0.95x (base 1.20x, -21.1%)	0.06x (base 0.06x, +2.9%)	improved: rebaseline to lock in (time -21.1%)
quicksort	4	1.03x (base 1.07x, -3.3%)	0.12x (base 0.12x, +1.4%)	ok

A change that moves performance ON PURPOSE records the new baseline in vm/selfhost/perf-baseline/pr/6132.json, with the reason, from this job's perf-results.json. The rebaseline is then part of this pull request's diff:

python3 vm/selfhost/calibrate-perf-baseline.py --pr 6132 --reason "<why these benchmarks moved>" perf-results.json

Result: no regression (improved past the baseline: consider rebaselining)

shai-almog · 2026-10-29T22:43:16Z

Compared 195 screenshots: 195 matched.

Native Android coverage

📊 Line coverage: 19.19% (56042/292047 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
- Other counters: instruction 18.14% (270005/1488151), branch 12.40% (19635/158314), complexity 10.36% (15813/152567), method 15.72% (11379/72383), class 27.88% (2235/8017)
- Lowest covered classes
  - kotlin.collections.unsigned.kotlin.collections.unsigned.UArraysKt___UArraysKt – 0.00% (0/2396 lines covered)
  - org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.ClassReader – 0.00% (0/1524 lines covered)
  - androidx.compose.runtime.androidx.compose.runtime.LinkComposer – 0.00% (0/1430 lines covered)
  - org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.MethodWriter – 0.00% (0/922 lines covered)
  - kotlinx.coroutines.channels.kotlinx.coroutines.channels.BufferedChannel – 0.00% (0/863 lines covered)
  - kotlin.sequences.kotlin.sequences.SequencesKt___SequencesKt – 0.00% (0/744 lines covered)
  - com.google.common.cache.com.google.common.cache.LocalCache$Segment – 0.00% (0/726 lines covered)
  - okio.okio.Buffer – 0.00% (0/687 lines covered)
  - kotlin.text.kotlin.text.StringsKt___StringsKt – 0.00% (0/630 lines covered)
  - com.codename1.androidcompat.rt.com.codename1.androidcompat.rt.TextXmlPullParser – 0.00% (0/623 lines covered)

✅ Native Android screenshot tests passed.

Native Android coverage

📊 Line coverage: 19.19% (56042/292047 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
- Other counters: instruction 18.14% (270005/1488151), branch 12.40% (19635/158314), complexity 10.36% (15813/152567), method 15.72% (11379/72383), class 27.88% (2235/8017)
- Lowest covered classes
  - kotlin.collections.unsigned.kotlin.collections.unsigned.UArraysKt___UArraysKt – 0.00% (0/2396 lines covered)
  - org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.ClassReader – 0.00% (0/1524 lines covered)
  - androidx.compose.runtime.androidx.compose.runtime.LinkComposer – 0.00% (0/1430 lines covered)
  - org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.MethodWriter – 0.00% (0/922 lines covered)
  - kotlinx.coroutines.channels.kotlinx.coroutines.channels.BufferedChannel – 0.00% (0/863 lines covered)
  - kotlin.sequences.kotlin.sequences.SequencesKt___SequencesKt – 0.00% (0/744 lines covered)
  - com.google.common.cache.com.google.common.cache.LocalCache$Segment – 0.00% (0/726 lines covered)
  - okio.okio.Buffer – 0.00% (0/687 lines covered)
  - kotlin.text.kotlin.text.StringsKt___StringsKt – 0.00% (0/630 lines covered)
  - com.codename1.androidcompat.rt.com.codename1.androidcompat.rt.TextXmlPullParser – 0.00% (0/623 lines covered)

Benchmark Results

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	scalar fallback (no native SIMD)
SIMD int-add (64K x300)	java 206ms / native 117ms = 1.7x speedup
SIMD float-mul (64K x300)	java 158ms / native 174ms = 0.9x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	gated to scalar (CPU autovectorizes scalar; explicit SIMD not beneficial here)
Base64 CN1 encode	73.000 ms
Base64 CN1 decode	83.000 ms
Base64 native encode	450.000 ms
Base64 encode ratio (CN1/native)	0.162x (83.8% faster)
Base64 native decode	281.000 ms
Base64 decode ratio (CN1/native)	0.295x (70.5% faster)
Image encode benchmark status	skipped (SIMD unsupported)

shai-almog · 2026-10-29T23:18:25Z

Compared 210 screenshots: 210 matched.
Native Windows port (arm64 / Apple Silicon - Arm): full hellocodenameone screenshot suite rendered offscreen with Direct2D/DirectWrite, plus the real benchmarks (base64 native/CN1/SIMD, image createMask/applyMask/modifyAlpha/PNG/JPEG, NEON SIMD kernels). Compared against the in-repo baseline in scripts/windows/screenshots.

Benchmark Results

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 50ms / native 3ms = 16.6x speedup
SIMD float-mul (64K x300)	java 49ms / native 3ms = 16.3x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 native bridge	unavailable (CN1 + SIMD + image benchmarks only)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	gated to scalar (CPU autovectorizes scalar; explicit SIMD not beneficial here)
Base64 CN1 encode	60.000 ms
Base64 CN1 decode	70.000 ms
Base64 SIMD encode	78.000 ms
Base64 encode ratio (SIMD/CN1)	1.300x (30.0% slower)
Base64 SIMD decode	72.000 ms
Base64 decode ratio (SIMD/CN1)	1.029x (2.9% slower)
Image encode benchmark iterations	100
Image createMask (SIMD off)	5.000 ms
Image createMask (SIMD on)	1.000 ms
Image createMask ratio (SIMD on/off)	0.200x (80.0% faster)
Image applyMask (SIMD off)	17.000 ms
Image applyMask (SIMD on)	17.000 ms
Image applyMask ratio (SIMD on/off)	1.000x (0.0% slower)
Image modifyAlpha (SIMD off)	17.000 ms
Image modifyAlpha (SIMD on)	8.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.471x (52.9% faster)
Image modifyAlpha removeColor (SIMD off)	16.000 ms
Image modifyAlpha removeColor (SIMD on)	11.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	0.688x (31.3% faster)

ParparVM vs HotSpot (JDK 25): Windows arm64

Runner CPU: ARMv8 (64-bit) Family 8 Model D49 Revision 0, MICROSOFT CORPORATION (baseline windows-arm64@armv8-64-bit-family-8-model-d49-microsoft-corporation)

Ratios are ParparVM / JDK 25: below 1.00x ParparVM is faster (time) or smaller (RAM). Median of 5 interleaved, paired rounds; every run's output was verified. A ratio more than 20% (time) / 25% (RAM) above its baseline in vm/selfhost/perf-baseline/ is a regression and fails; one that far below is an improvement, reported but not failed (a row whose calibration runs were noisier carries a wider tolerance), and for RAM the change must also exceed 0.05x in absolute terms. Both run unpinned on all of the runner's CPUs, with their own default thread counts.

Benchmark	Cores	Time	RAM	Status
hello (WinHelloMain)	4	1.05x (base 1.11x, -4.9%)	0.72x (base 0.75x, -4.3%)	ok
translator (self)	4	0.88x (base 0.84x, +4.4%)	0.48x (base 0.51x, -4.2%)	ok
intArithmetic	4	1.04x (base 1.04x, -0.0%)	0.06x (base 0.06x, +3.1%)	ok
longArithmetic	4	0.79x (base 0.80x, -0.3%)	0.06x (base 0.06x, +3.6%)	ok
mathTranscendental	4	0.72x (base 0.72x, -0.5%)	0.07x (base 0.06x, +2.1%)	ok
arraySequential	4	0.39x (base 0.46x, -13.4%)	0.39x (base 0.39x, +0.1%)	ok
arrayRandom	4	0.94x (base 0.94x, +0.1%)	0.23x (base 0.23x, +0.2%)	ok
objectAllocation	4	1.81x (base 1.82x, -0.4%)	0.41x (base 0.43x, -4.7%)	ok
valueEscape	4	0.76x (base 0.76x, +0.0%)	0.05x (base 0.05x, +2.4%)	ok
hashMapChurn	4	0.99x (base 0.98x, +0.0%)	0.12x (base 0.12x, -1.5%)	ok
stringBuilding	4	1.53x (base 1.43x, +7.3%)	0.27x (base 0.27x, +0.3%)	ok
recursion	4	1.42x (base 1.46x, -2.9%)	0.07x (base 0.07x, +1.3%)	ok
quicksort	4	1.00x (base 1.00x, +0.3%)	0.12x (base 0.12x, +0.6%)	ok

Result: no regression

shai-almog · 2026-10-29T23:24:47Z

Compared 210 screenshots: 210 matched.
Native Linux port (arm64), GTK3/Cairo/Pango, ParparVM bytecode-to-C (no JVM): the hellocodenameone screenshot suite rendered by a native ELF built + run on the GitHub arm64 runner. Baseline: scripts/linux/screenshots-arm.

ParparVM vs HotSpot (JDK 25): Linux arm64

Runner CPU: Neoverse-N2 (baseline linux-arm64@neoverse-n2)

Ratios are ParparVM / JDK 25: below 1.00x ParparVM is faster (time) or smaller (RAM). Median of 5 interleaved, paired rounds; every run's output was verified. A ratio more than 20% (time) / 25% (RAM) above its baseline in vm/selfhost/perf-baseline/ is a regression and fails; one that far below is an improvement, reported but not failed (a row whose calibration runs were noisier carries a wider tolerance), and for RAM the change must also exceed 0.05x in absolute terms. Both run unpinned on all of the runner's CPUs, with their own default thread counts.

Benchmark	Cores	Time	RAM	Status
hello (LinuxHelloMain)	4	0.97x (base 1.02x, -4.9%)	0.77x (base 0.66x, +16.8%)	ok
translator (self)	4	0.76x (base 0.70x, +8.9%)	0.43x (base 0.43x, -1.1%)	ok
intArithmetic	4	1.05x (base 1.04x, +0.0%)	0.04x (base 0.03x, +7.0%)	ok
longArithmetic	4	0.79x (base 0.79x, -0.0%)	0.03x (base 0.03x, +5.1%)	ok
mathTranscendental	4	1.09x (base 1.10x, -0.3%)	0.04x (base 0.03x, +9.5%)	ok
arraySequential	4	0.38x (base 0.36x, +5.1%)	0.37x (base 0.37x, +0.5%)	ok
arrayRandom	4	0.94x (base 0.94x, +0.5%)	0.20x (base 0.20x, +0.6%)	ok
objectAllocation	4	1.96x (base 1.77x, +10.8%)	0.36x (base 0.37x, -2.0%)	ok
valueEscape	4	0.51x (base 0.51x, -0.1%)	0.03x (base 0.03x, +9.4%)	ok
hashMapChurn	4	0.85x (base 0.84x, +0.4%)	0.12x (base 0.12x, -0.1%)	ok
stringBuilding	4	1.51x (base 1.57x, -3.6%)	0.26x (base 0.26x, +0.0%)	ok
recursion	4	1.55x (base 1.43x, +8.0%)	0.04x (base 0.04x, +3.0%)	ok
quicksort	4	1.00x (base 0.99x, +0.6%)	0.09x (base 0.09x, +1.3%)	ok

Result: no regression

github-actions · 2026-10-29T23:27:24Z

✅ ByteCodeTranslator Quality Report

Test & Coverage

✅ Tests: 901 total, 0 failed, 55 skipped

Benchmark Results

Execution Time: 10426 ms
Hotspots (Top 20 sampled methods):
- 12.55% com.codename1.tools.translator.IteratorEscape.ctorOnlyStoresParamsIntoThis (201 samples)
- 9.24% java.lang.System.identityHashCode (148 samples)
- 6.43% java.util.ArrayList.indexOf (103 samples)
- 5.74% com.codename1.tools.translator.BytecodeMethod.equals (92 samples)
- 3.87% java.lang.Object.hashCode (62 samples)
- 3.12% com.codename1.tools.translator.IteratorEscape.mangle (50 samples)
- 2.68% com.codename1.tools.translator.classfile.analysis.Frame.execute (43 samples)
- 2.12% java.lang.StringBuilder.append (34 samples)
- 2.00% java.util.HashMap.hash (32 samples)
- 1.75% com.codename1.tools.translator.bytecodes.Invoke.findMethodUp (28 samples)
- 1.56% com.codename1.tools.translator.ByteCodeClass.hasDeclaredMethod (25 samples)
- 1.44% com.codename1.tools.translator.bytecodes.Invoke.resolveDirectTarget (23 samples)
- 1.25% java.lang.String.equals (20 samples)
- 1.19% java.io.FileOutputStream.writeBytes (19 samples)
- 1.12% com.codename1.tools.translator.Parser.cullMethods (18 samples)
- 1.12% com.codename1.tools.translator.BytecodeMethod.updateInlinableFieldDependencies (18 samples)
- 1.06% java.lang.StringCoding.encode (17 samples)
- 0.87% com.codename1.tools.translator.IteratorEscape.walk (14 samples)
- 0.87% java.util.HashMap.putVal (14 samples)
- 0.81% com.codename1.tools.translator.NativeSymbolIndex.<init> (13 samples)
⚠️ Coverage report not generated.

Static Analysis

✅ SpotBugs: no findings (report was not generated by the build).
⚠️ PMD report not generated.
⚠️ Checkstyle report not generated.

Generated automatically by the PR CI workflow.

…urface dart:io RandomAccessFile, UiImage/ByteBuffer, the Material/Cupertino l10n tables and RTL mirroring are linked into every Flutter app, so the gallery's executable grows 3-11% across linux, windows and javascript. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

shai-almog and others added 5 commits October 29, 2026 16:33

Flutter: per-library stub views rebuilt each time, bounded image cach…

b6b9b43

…e, header reloads Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Flutter guide: contractions for the Vale gate

316197e

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

shai-almog merged commit 645d6a4 into master Oct 30, 2026
135 of 146 checks passed

shai-almog deleted the dart-debug-line-map branch October 30, 2026 03:45

Conversation

shai-almog commented Oct 29, 2026

Dart -> Java debug line mapping

Flutter in the Gradle plugin

Tests

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Flutter vs Codename One

android

ios

javascript

linux

macos

windows

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Cloudflare Preview

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✅ Continuous Quality Report

Test & Coverage

Static Analysis

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Benchmark Results

Detailed Performance Metrics

ParparVM vs HotSpot (JDK 25): Windows x64

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ParparVM vs HotSpot (JDK 25): Windows arm64

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