Kotlin Multiplatform: Compose code as a Codename One app by shai-almog · Pull Request #6106 · codenameone/CodenameOne

shai-almog · 2026-10-25T19:12:55Z

A Kotlin Multiplatform module's commonMain builds as a Codename One application for every target. kotlinc compiles it for the JVM with the Compose compiler plugin. The Compose runtime and kotlinx.coroutines ship unmodified, and maven/compose-compat replaces only the UI layer, writing it over Codename One components.

Benchmarks

The same commonMain was built both ways and run on the iPhone 17 Pro simulator (scripts/kmp-bench).

	Codename One	Compose Multiplatform
Executable, stripped	16.4 MB	22.9 MB
App bundle	27.3 MB	28.8 MB
Physical footprint	47-48 MB	48 MB
Start-up	596-685 ms	646-794 ms

For reference, an empty UIKit app measures 34 MB and starts in 640-750 ms on the same simulator.

What's included

Compose UI layer (compose-compat): layout policies, modifiers, text, material3 and animation. LazyColumn and LazyRow compose only the items in view. The top app bar and navigation bar now pad by the part of the safe area their host actually lies under, so the bar no longer draws under the status bar.
Import and build: cn1:import-kmp-project, a compose profile in the archetype, and Gradle support. Gradle stops with the line to add if the Compose plugin isn't applied, and convert-to-gradle writes that line.
ParparVM: field updaters are lowered at translate time, ServiceLoader resolves through a registry built at translate time, and JavaAPI gains the classes the Compose runtime and coroutines need.
Memory: loading the theme no longer leaves 24k strings behind (ThemeStrings), and Font.derive finds a cached font without building a key. Live heap drops from 3.7 MB to 3.2 MB, and footprint by about 2 MB.
hellocodenameone: moves from Kotlin 1.6 to 2.2.10, with four KmpCompat* screenshot tests covering layout, typography, lists and state/animation. Their goldens get seeded on CI.
Docs: a new developer guide chapter, "Running Kotlin Multiplatform and Compose applications", with a build-pipeline diagram, a runtime-layers diagram, the benchmark chart and a side-by-side screenshot.

Verified locally

core-unittests: 8161 tests pass, SpotBugs reports 0 findings.
compose-compat: tests pass, SpotBugs reports 0 findings.
Vale is clean on the new chapter.
iOS simulator: the layout now matches the CMP build.

LanguageTool and the screenshot suites were not run locally; they run on CI.

🤖 Generated with Claude Code

A KMP module's commonMain (and its JVM source set) builds as a Codename One application: kotlinc compiles it for the JVM with the Compose compiler plugin, the unmodified Compose runtime and kotlinx.coroutines ship as they are, and maven/compose-compat provides the UI layer over Codename One components. - compose-compat: Modifier chains, Box/Row/Column/Lazy layout policies, text, material3, animation; top and navigation bars pad by the part of the safe area their host lies under, read at measure time. - cn1:import-kmp-project, the archetype compose profile, Gradle support. - ParparVM: field updaters lowered at translate time, ServiceLoader registry, the JavaAPI classes the Compose runtime and coroutines need. - Theme loading no longer leaves 24k strings behind (ThemeStrings), and Font.derive finds a cached font without building a key. - hellocodenameone moves to Kotlin 2.2.10 and carries KmpCompat screenshot tests; scripts/kmp-bench compares the same source against Compose Multiplatform; new developer guide chapter with diagrams. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

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

shai-almog · 2026-10-25T19:21:44Z

Compared 12 screenshots: 12 matched.
✅ JavaSE simulator integration screenshots matched stored baselines.

shai-almog · 2026-10-25T19:29:39Z

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.

… reactor; guide snippets by tag Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

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

github-actions · 2026-10-25T19:46:40Z

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.

windows

9 interleaved rounds

Metric	Codename One	Flutter	Ratio	Winner
Installed size	107.9 MB	121.1 MB	1.12x	Codename One
Executable code	11.3 MB	14.1 MB	1.25x	Codename One
Download size (zipped)	77.9 MB	86.4 MB	1.11x	Codename One
Cold start to first frame on screen	110 ms	208 ms	1.88x	Codename One
Memory at rest	56.2 MB	91.9 MB	1.63x	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	72 ms	162 ms	2.25x
longArithmetic	53 ms	50 ms	0.94x
mathTranscendental	161 ms	193 ms	1.20x
arraySequential	8 ms	30 ms	3.75x
arrayRandom	206 ms	236 ms	1.15x
objectAllocation	15 ms	27 ms	1.80x
valueEscape	0 ms	6 ms	too fast to time
hashMapChurn	35 ms	253 ms	7.23x
stringBuilding	27 ms	93 ms	3.44x
recursion	142 ms	232 ms	1.63x
quicksortBench	123 ms	127 ms	1.03x
Geometric mean			1.96x

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 5 of 5 measured metrics across 1 platform(s).

github-actions · 2026-10-25T20:32:48Z

✅ Continuous Quality Report

Test & Coverage

✅ Tests: 14787 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 · 2026-10-25T21:10:24Z

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.

…ndroid duplicate classes, guide snippets, mac goldens Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…'s coroutines version Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

shai-almog · 2026-10-26T03:06:37Z

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.

# Conflicts: # .github/workflows/developer-guide-docs.yml # scripts/copyright-header-exclusions.txt

github-actions · 2026-10-26T04:12:39Z

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)

github-actions · 2026-10-26T04:29:58Z

Cloudflare Preview

URL: https://pr-6106-website-preview.codenameone.pages.dev
Branch: pr-6106-website-preview

…names real animate functions Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

shai-almog · 2026-10-26T05:18:14Z

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 62ms / native 4ms = 15.5x speedup
SIMD float-mul (64K x300)	java 38ms / native 3ms = 12.6x 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	39.000 ms
Base64 CN1 decode	47.000 ms
Base64 SIMD encode	60.000 ms
Base64 encode ratio (SIMD/CN1)	1.538x (53.8% slower)
Base64 SIMD decode	48.000 ms
Base64 decode ratio (SIMD/CN1)	1.021x (2.1% slower)
Image encode benchmark iterations	100
Image createMask (SIMD off)	4.000 ms
Image createMask (SIMD on)	2.000 ms
Image createMask ratio (SIMD on/off)	0.500x (50.0% faster)
Image applyMask (SIMD off)	15.000 ms
Image applyMask (SIMD on)	16.000 ms
Image applyMask ratio (SIMD on/off)	1.067x (6.7% slower)
Image modifyAlpha (SIMD off)	19.000 ms
Image modifyAlpha (SIMD on)	10.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.526x (47.4% faster)
Image modifyAlpha removeColor (SIMD off)	19.000 ms
Image modifyAlpha removeColor (SIMD on)	10.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	0.526x (47.4% faster)

ParparVM vs HotSpot (JDK 25): Windows x64

Runner CPU: AMD64 Family 26 Model 2 Stepping 1, AuthenticAMD (baseline windows-x64@amd64-family-26-model-2-authenticamd)

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	1.67x (base 1.41x, +18.6%)	0.61x (base 0.68x, -10.9%)	ok
translator (self)	4	0.88x (base 0.90x, -1.4%)	0.47x (base 0.47x, +1.6%)	ok
intArithmetic	4	0.99x (base 0.99x, -0.7%)	0.06x (base 0.05x, +2.9%)	ok
longArithmetic	4	1.00x (base 0.99x, +1.2%)	0.06x (base 0.05x, +3.2%)	ok
mathTranscendental	4	0.92x (base 0.94x, -1.4%)	0.06x (base 0.06x, +2.4%)	ok
arraySequential	4	1.62x (base 1.75x, -7.1%)	0.38x (base 0.38x, +0.3%)	ok
arrayRandom	4	0.98x (base 1.00x, -1.9%)	0.23x (base 0.23x, +0.6%)	ok
objectAllocation	4	1.56x (base 1.65x, -5.1%)	0.24x (base 0.21x, +15.1%)	ok
valueEscape	4	0.10x (base 0.10x, +0.1%)	0.05x (base 0.04x, +3.2%)	ok
hashMapChurn	4	1.59x (base 1.59x, -0.1%)	0.08x (base 0.09x, -7.7%)	ok
stringBuilding	4	1.42x (base 1.39x, +2.4%)	0.27x (base 0.27x, +0.1%)	ok
recursion	4	1.40x (base 1.44x, -2.8%)	0.06x (base 0.06x, +3.1%)	ok
quicksort	4	1.08x (base 1.06x, +2.4%)	0.12x (base 0.12x, +1.4%)	ok

Result: no regression

shai-almog · 2026-10-26T05:47:56Z

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 49ms / native 3ms = 16.3x 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	61.000 ms
Base64 CN1 decode	71.000 ms
Base64 SIMD encode	73.000 ms
Base64 encode ratio (SIMD/CN1)	1.197x (19.7% slower)
Base64 SIMD decode	73.000 ms
Base64 decode ratio (SIMD/CN1)	1.028x (2.8% slower)
Image encode benchmark iterations	100
Image createMask (SIMD off)	5.000 ms
Image createMask (SIMD on)	2.000 ms
Image createMask ratio (SIMD on/off)	0.400x (60.0% faster)
Image applyMask (SIMD off)	15.000 ms
Image applyMask (SIMD on)	16.000 ms
Image applyMask ratio (SIMD on/off)	1.067x (6.7% slower)
Image modifyAlpha (SIMD off)	15.000 ms
Image modifyAlpha (SIMD on)	12.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.800x (20.0% faster)
Image modifyAlpha removeColor (SIMD off)	14.000 ms
Image modifyAlpha removeColor (SIMD on)	9.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	0.643x (35.7% 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%)	0.70x (base 0.75x, -6.9%)	ok
translator (self)	4	0.87x (base 0.84x, +3.9%)	0.47x (base 0.51x, -6.4%)	ok
intArithmetic	4	1.04x (base 1.04x, -0.0%)	0.06x (base 0.06x, +3.8%)	ok
longArithmetic	4	0.79x (base 0.80x, -0.3%)	0.06x (base 0.06x, +4.3%)	ok
mathTranscendental	4	0.72x (base 0.72x, -0.5%)	0.07x (base 0.06x, +2.6%)	ok
arraySequential	4	0.37x (base 0.46x, -18.0%)	0.39x (base 0.39x, +0.0%)	ok
arrayRandom	4	0.94x (base 0.94x, -0.1%)	0.23x (base 0.23x, +0.4%)	ok
objectAllocation	4	1.82x (base 1.82x, -0.2%)	0.30x (base 0.43x, -31.3%)	ok
valueEscape	4	0.76x (base 0.76x, +0.0%)	0.05x (base 0.05x, +3.2%)	ok
hashMapChurn	4	0.98x (base 0.98x, -0.2%)	0.12x (base 0.12x, +1.3%)	ok
stringBuilding	4	1.53x (base 1.43x, +7.4%)	0.27x (base 0.27x, -0.0%)	ok
recursion	4	1.42x (base 1.46x, -2.9%)	0.07x (base 0.07x, +1.9%)	ok
quicksort	4	1.01x (base 1.00x, +0.5%)	0.12x (base 0.12x, +0.8%)	ok

Result: no regression

github-actions · 2026-10-26T06:01:11Z

✅ ByteCodeTranslator Quality Report

Test & Coverage

✅ Tests: 901 total, 0 failed, 55 skipped

Benchmark Results

Execution Time: 10698 ms
Hotspots (Top 20 sampled methods):
- 19.23% com.codename1.tools.translator.IteratorEscape.mangle (313 samples)
- 9.09% java.lang.System.identityHashCode (148 samples)
- 5.71% java.lang.Object.hashCode (93 samples)
- 5.47% java.util.ArrayList.indexOf (89 samples)
- 2.64% java.lang.StringBuilder.append (43 samples)
- 2.58% com.codename1.tools.translator.IteratorEscape.ctorOnlyStoresParamsIntoThis (42 samples)
- 2.27% com.codename1.tools.translator.BytecodeMethod.equals (37 samples)
- 1.90% com.codename1.tools.translator.JavascriptReachability.enqueueResolved (31 samples)
- 1.23% com.codename1.tools.translator.bytecodes.Invoke.resolveDirectTarget (20 samples)
- 1.17% java.io.FileOutputStream.writeBytes (19 samples)
- 0.98% com.codename1.tools.translator.ByteCodeClass.updateAllDependencies (16 samples)
- 0.98% java.io.FileOutputStream.open0 (16 samples)
- 0.98% java.util.HashMap.putVal (16 samples)
- 0.98% com.codename1.tools.translator.BytecodeMethod.updateInlinableFieldDependencies (16 samples)
- 0.98% com.codename1.tools.translator.ByteCodeClass.hasDeclaredMethod (16 samples)
- 0.92% java.lang.String.equals (15 samples)
- 0.92% com.codename1.tools.translator.ByteCodeClass.markDependencies (15 samples)
- 0.92% java.lang.StringCoding.encode (15 samples)
- 0.86% com.codename1.tools.translator.classfile.analysis.Frame.execute (14 samples)
- 0.80% com.codename1.tools.translator.ByteCodeClass.generateCCode (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.

shai-almog · 2026-10-26T08:23:18Z

Compared 196 screenshots: 196 matched.
✅ Native Mac screenshot tests passed.

Benchmark Results

VM Translation Time: 0 seconds
Compilation Time: 677 seconds

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 73ms / native 3ms = 24.3x speedup
SIMD float-mul (64K x300)	java 70ms / native 3ms = 23.3x 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	active (NEON-accelerated)
Base64 CN1 encode	79.000 ms
Base64 CN1 decode	78.000 ms
Image encode benchmark iterations	100
Image createMask (SIMD off)	10.000 ms
Image createMask (SIMD on)	6.000 ms
Image createMask ratio (SIMD on/off)	0.600x (40.0% faster)
Image applyMask (SIMD off)	78.000 ms
Image applyMask (SIMD on)	76.000 ms
Image applyMask ratio (SIMD on/off)	0.974x (2.6% faster)
Image modifyAlpha (SIMD off)	85.000 ms
Image modifyAlpha (SIMD on)	91.000 ms
Image modifyAlpha ratio (SIMD on/off)	1.071x (7.1% slower)
Image modifyAlpha removeColor (SIMD off)	111.000 ms
Image modifyAlpha removeColor (SIMD on)	80.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	0.721x (27.9% faster)

ParparVM vs HotSpot (JDK 25): macOS arm64

Runner CPU: Apple M1 (Virtual) (baseline macos-arm64)

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 (HelloCodenameOne)	3	0.93x (base 0.96x, -3.2%)	0.83x (base 0.93x, -10.4%)	ok
translator (self)	3	0.64x (base 0.62x, +3.1%)	0.77x (base 0.78x, -1.7%)	ok
intArithmetic	3	1.06x (base 1.03x, +2.5%)	0.12x (base 0.12x, +1.2%)	ok
longArithmetic	3	1.02x (base 1.03x, -0.8%)	0.12x (base 0.07x, +66.2%)	ok
mathTranscendental	3	0.99x (base 1.01x, -2.0%)	0.12x (base 0.12x, +0.2%)	ok
arraySequential	3	0.43x (base 0.42x, +2.9%)	0.53x (base 0.53x, +0.4%)	ok
arrayRandom	3	0.97x (base 0.99x, -2.0%)	0.32x (base 0.32x, +0.3%)	ok
objectAllocation	3	1.05x (base 1.11x, -4.6%)	0.65x (base 0.72x, -10.2%)	ok
valueEscape	3	0.47x (base 0.51x, -6.7%)	0.08x (base 0.09x, -4.9%)	ok
hashMapChurn	3	1.09x (base 1.18x, -7.1%)	0.07x (base 0.07x, +4.6%)	ok
stringBuilding	3	0.93x (base 0.84x, +10.7%)	0.46x (base 0.46x, -1.1%)	ok
recursion	3	1.23x (base 1.24x, -0.1%)	0.12x (base 0.12x, +0.6%)	ok
quicksort	3	0.97x (base 1.01x, -4.2%)	0.11x (base 0.11x, +1.8%)	ok

Result: no regression

…rd covers the Compose screens Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…ows KmpCompat goldens Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…ith their implementors JVMS 5.5 initializes a superinterface declaring a default method together with any class implementing it. The JS runtime only initialized the superclass chain, and a default method reads its own interface's statics without an init guard, so Compose's MonotonicFrameClock.getKey() (= Key) answered null; CombinedContext.minusKey(null) then failed Kotlin's parameter check, whose message builder indexed an empty stack trace (AIOOBE 0 in every KmpCompat screenshot test). The translator now flags such interfaces (D: 1) and ensureClassInitialized and its suspending twin initialize them after the base class. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

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

shai-almog · 2026-10-26T10:47:59Z

Compared 210 screenshots: 210 matched.
Native Windows port, REAL shipping pipeline: the hellocodenameone screenshot suite rendered by a binary CROSS-COMPILED on Linux (clang-cl + xwin, WebView2 linked) and RUN on a Windows x64 runner. 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 56ms / native 4ms = 14.0x speedup
SIMD float-mul (64K x300)	java 63ms / native 4ms = 15.7x 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	74.000 ms
Base64 CN1 decode	91.000 ms
Base64 SIMD encode	119.000 ms
Base64 encode ratio (SIMD/CN1)	1.608x (60.8% slower)
Base64 SIMD decode	103.000 ms
Base64 decode ratio (SIMD/CN1)	1.132x (13.2% slower)
Image encode benchmark iterations	100
Image createMask (SIMD off)	9.000 ms
Image createMask (SIMD on)	2.000 ms
Image createMask ratio (SIMD on/off)	0.222x (77.8% faster)
Image applyMask (SIMD off)	27.000 ms
Image applyMask (SIMD on)	27.000 ms
Image applyMask ratio (SIMD on/off)	1.000x (0.0% slower)
Image modifyAlpha (SIMD off)	35.000 ms
Image modifyAlpha (SIMD on)	21.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.600x (40.0% faster)
Image modifyAlpha removeColor (SIMD off)	24.000 ms
Image modifyAlpha removeColor (SIMD on)	18.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	0.750x (25.0% faster)

…routines' stdlib; JS KmpCompat goldens; guide terms Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

shai-almog · 2026-10-26T13:17:54Z

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

…lib; arm64 Linux suite gets swap; Android KmpCompat goldens Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

# Conflicts: # docs/developer-guide/languagetool-accept.txt

shai-almog · 2026-10-26T18:56:08Z

Compared 195 screenshots: 195 matched.

Native Android coverage

📊 Line coverage: 19.20% (56039/291847 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
- Other counters: instruction 18.16% (269994/1487120), branch 12.41% (19633/158164), complexity 10.37% (15811/152436), method 15.73% (11378/72327), class 27.93% (2235/8003)
- 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: 19.20% (56039/291847 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
- Other counters: instruction 18.16% (269994/1487120), branch 12.41% (19633/158164), complexity 10.37% (15811/152436), method 15.73% (11378/72327), class 27.93% (2235/8003)
- 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 182ms / native 191ms = 0.9x speedup
SIMD float-mul (64K x300)	java 118ms / native 97ms = 1.2x 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	91.000 ms
Base64 CN1 decode	85.000 ms
Base64 native encode	439.000 ms
Base64 encode ratio (CN1/native)	0.207x (79.3% faster)
Base64 native decode	280.000 ms
Base64 decode ratio (CN1/native)	0.304x (69.6% faster)
Image encode benchmark status	skipped (SIMD unsupported)

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

Modifier.clip clipped to the bounding rectangle, so a card's accent stripe kept square corners. It now clips to the rounded outline, cut to the clip already in force. That cut threw: BezierCurve.segment read the signed crossing count -1 of a curve running right to left as an unsupported curve order. Any rounded path crossing a clip edge failed to intersect. Also normalize a bound color override in one pass into a reused buffer. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

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

… EDT, clip rounded shapes as polygons Recomposition median 42.6ms -> 3.8ms and scroll work 40ms -> 3.3ms on the Keynote benchmark: the pipeline lost two EDT cycles of latency, and the rounded clip no longer allocates curve intersections every paint. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…no frames for a hidden host Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

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

… after a parent paint The padding a safe-area container sets for one measurement announced a style change, which queued a revalidate of the whole Form from inside its layout: a Form with a Toolbar on a notched device never stopped laying out (14-26% idle CPU on an iPhone simulator). It was left announcing because the JavaSE video peer went blank without it; the cause there was Component.repaint(x, y, w, h) dropping region repaints while repaintPending stayed set from a full repaint that a parent, not the component itself, had painted. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

… dropping to Java and the platform API Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…nting buffers excluded from SpotBugs Suppressing the snap's PADDING event also dropped the setShouldCalcPreferredSize(true) it carried, so nested containers kept layouts made for the unsnapped padding. Do that part explicitly, still without the parent revalidateLater that caused the treadmill. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…ers; guide credits KMP and explains the imperative gap Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…ain unit test for the Java one Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

… repaints it The form's endless safe-area relayout used to do this by accident; with that gone, the video peer showed no frames. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…radle-provided libraries on the 16 KB list The side-by-side Compose and Java cards and the test now live in compiled sources the guide includes by tag, and the Java card is self-contained so the Playground runs it. kotlinx-coroutines-core, androidx.collection and androidx.annotation are declared by the Android builder for Compose apps, so the 16 KB alignment check resolves them too. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…th NSContactsUsageDescription alone Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…k; a generic description when the app gives none The builder now asks ContactsPermissionScan, the scan the Android builder already uses, whether the application reaches the address book. When it does, AddressBook is linked and, if no NSContactsUsageDescription was declared, a generic one is supplied, which also turns on the define the natives compile under. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

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

…above it and 8MB failed by 8KB Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…d 30 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

The constant interface map's lookup range-tested the class id and trapped on a gap on every interface call, which cost the backend benchmark about 1% of peak throughput. The table is now dense (a gap takes the lowest implementer's row) and an out-of-range id is clamped with a conditional move, so an interface call is the same two loads as before with no branch. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

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

Master's #6106 suppresses the snap's padding events and flags the container for re-measure instead. Folded into the split snap: during measurement only nested containers are flagged, so the size just measured is kept and the stale-inset check can run. Measurement now uses the inset the last layout applied (or the first reading in a new safe-area context) rather than the position read mid-layout, which can be stale in either direction. The context (safe margins and surface size) is recorded so rotation, a new safe area, hiding or re-adding the bar re-reads its position. New tests cover a bar pushed off the edge, partly over it, and a display gaining an inset after layout. Goldens: Android SheetSlideUpAnimation and the iOS metal-27 animation filmstrips, where bars measured before placement are now sized with their inset (the toolbar matches its height in the static screenshots). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…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>

…#6132) * Dart sources debuggable as Dart; Flutter support in the Gradle plugin 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> * Flutter interop: dart:developer, RandomAccessFile, import report, 17 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> * Flutter interop: FirebaseUI, firebase_ai, App Check, l10n/RTL, package-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> * Flutter: per-library stub views rebuilt each time, bounded image cache, header reloads Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Flutter asset tests follow the asset code into build-engine 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> * Guide snippets: Flutter examples included from docs/demos, UIManager 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> * Flutter guide: contractions for the Vale gate Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Flutter benchmark: rebaseline gallery code size for the new runtime surface 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> --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

Since 8f5006b the watch resolves Sheet/SheetTitleBar from the theme as tvOS does: rounded top corners and a divider, no fallback box. Master has failed this test since then. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…n on divide by zero (#6163) * JS port: port the C backend's emitter optimizations, throw on integer divide by zero Getter/setter inlining, StringBuilder fusion for builders proven not to escape, dotted member access in place of hoisted keys, packed Java array allocation and type-flow devirtualization in the JavaScript backend. stringBuilding goes from 99 to 68 ms (dart2js ~99), quicksort -6%, arraySequential -5%, every benchmark checksum still matching the JVM. Integer division and remainder by zero now throw java.lang.ArithmeticException on the JavaScript port; they returned 0 (int) or threw an uncatchable JS Error (long) before. Measured and not ported: scalar replacement (V8 already does it), bounds-check elimination (slower), repeated-checkcast removal (casts measured free). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * JS port: a folded getter on a null receiver throws NullPointerException The straight-line fold replaced the invoke with a bare property read, which on null threw a JS TypeError that no Java catch sees (unity-compat console sample, null string Length). The receiver goes through _nn unless it is this. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * JS port: a folded setter on a null receiver throws NullPointerException too Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * vm/tests: copyright headers on the new JS flow fixtures Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * vm/tests: explicit narrowing in the short-overflow torture case (CodeQL) Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs: Vale contractions in the JavaScript detach section Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * iOS: define cn1ReadSafeAreaInsets for every UIKit target It lived in the iPhone-only branch while viewSafeAreaInsetsDidChange calls it on all of them, so the Metal tvOS and Mac Catalyst builds failed on master (-Wobjc-method-access as error). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs: avoid 'callees' (LanguageTool) Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * vm/tests: NativeImage size getters must not query the host The facade test asserted the old delegation to resolveWidth/resolveHeight, which asks the host and made layout code generators; it now asserts the opposite. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * watchOS: rebaseline Sheet after the HashMap theme loading (#6106) Since 8f5006b the watch resolves Sheet/SheetTitleBar from the theme as tvOS does: rounded top corners and a divider, no fallback box. Master has failed this test since then. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

shai-almog and others added 2 commits October 25, 2026 21:12

ci: KMP tests mapped to a port-status feature; copyright headers

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

shai-almog and others added 2 commits October 25, 2026 21:35

ci: install compose-compat where hellocodenameone builds on a partial…

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… reactor; guide snippets by tag Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs: copyright header on the KMP guide snippet

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

shai-almog and others added 2 commits October 26, 2026 03:55

ci: KMP on every target - stage kotlinx/Kotlin 2 for native and JS, A…

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…ndroid duplicate classes, guide snippets, mac goldens Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

ci: guide workflows watch the KMP snippet tree; Android keeps the app…

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…'s coroutines version Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Merge remote-tracking branch 'origin/master' into kmp-compose-compat

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# Conflicts: # .github/workflows/developer-guide-docs.yml # scripts/copyright-header-exclusions.txt

ci: Android strips the coroutines jar's _COROUTINE frames too; guide …

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…names real animate functions Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

shai-almog and others added 4 commits October 26, 2026 11:13

ParparVM on Windows opens long and non-ASCII paths; hello C build gua…

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…rd covers the Compose screens Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

compose-compat drops the coroutines metadata-only root artifact; Wind…

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…ows KmpCompat goldens Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

js runtime: say where superclass interfaces are initialized

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

Android: Kotlin apps default to a compiler that reads the declared co…

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…routines' stdlib; JS KmpCompat goldens; guide terms Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

shai-almog and others added 2 commits October 26, 2026 19:57

Android raises a pinned Kotlin older than the shipped coroutines' std…

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…lib; arm64 Linux suite gets swap; Android KmpCompat goldens Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Merge remote-tracking branch 'origin/master' into kmp-compose-compat

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# Conflicts: # docs/developer-guide/languagetool-accept.txt

shai-almog and others added 22 commits October 27, 2026 19:35

Merge remote-tracking branch 'origin/master' into kmp-compose-compat

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

kmp-bench: stripped bundle sizes, recomposition and scroll timings

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compose-compat: a clip that misses the rounded outline clips to nothing

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compose-compat: a frame that resizes the host asks its parent again; …

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…no frames for a hidden host Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

kmp-bench: relative chart, final numbers, guide motivation backed by …

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

kmp-bench: the same Keynote screens in Java as a third side; guide on…

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… dropping to Java and the platform API Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

kmp-bench: Java list on InfiniteContainer with pooled cards; new numb…

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…ers; guide credits KMP and explains the imperative gap Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Guide: the session card in Compose and in Java side by side, and a pl…

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…ain unit test for the Java one Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

JavaSE FFmpeg video: each decoded frame refreshes the peer buffer and…

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… repaints it The form's endless safe-area relayout used to do this by accident; with that gone, the video peer showed no frames. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Merge remote-tracking branch 'origin/master' into kmp-compose-compat

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Size gap is Kotlin, time gap the reactive model; AddressBook links wi…

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…th NSContactsUsageDescription alone Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

GuideSessionCard.kt: drop the duplicated package line

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Pacing test: 32MB slack over the headroom margin; readings land ~8MB …

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…above it and 8MB failed by 8KB Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

archetype-smoke: 45-minute job limit; a green run takes ~28 of the ol…

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…d 30 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Merge remote-tracking branch 'origin/master' into kmp-compose-compat

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

shai-almog merged commit 8f5006b into master Oct 29, 2026
116 of 142 checks passed

shai-almog deleted the kmp-compose-compat branch October 29, 2026 12:36

shai-almog mentioned this pull request Oct 30, 2026

Release 7.0.280 blockers: backend writer close order, x64 Linux native swap #6135

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