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Run Flutter widget code on Codename One - #5883

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shai-almog merged 603 commits into
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flutter-dart-transpilation
Oct 16, 2026
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Run Flutter widget code on Codename One#5883
shai-almog merged 603 commits into
masterfrom
flutter-dart-transpilation

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@shai-almog

@shai-almog shai-almog commented Sep 22, 2026

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Compiles Dart widget source to Java at build time and runs it on Codename One's own renderer. There is no Dart VM in the result, no embedded engine and no platform view — a Dart screen becomes ordinary Codename One components, so it inherits the theme, the event thread, the accessibility tree and the native build.

Two entry points, which are the two things a user actually wants to do:

  • FlutterUI.wrap(widget) returns a Container that goes anywhere an ordinary component does, for putting one Dart screen inside an existing app. It deliberately does not install the Material base theme, so it will not restyle the screen around it.
  • FlutterUI.runApp(widget) mounts the tree as the whole UI, and does install it.

The build wiring is the archetype's own: the transcode-flutter goal is already bound and is a silent no-op until src/main/flutter exists. No Dart SDK is involved — the transpiler is Java and the Dart is input, never executed.

Benchmark

scripts/flutter-bench builds one application two ways — the Flutter toolchain's release build, and the identical Dart source transpiled by Codename One — and publishes size, start-up and idle memory per platform to the PR and to port status.

Neither application is vendored. prepare.sh takes the gallery from the Flutter SDK CI clones and copies the same 159 files into both trees, so the comparison cannot drift: there is no second copy for an edit to land on. An earlier round of this work compared two different galleries and every number it produced was meaningless. The Codename One side is generated from the shipping archetype with the runtime dependency enabled — the two steps the guide tells a user to take — so a change that breaks the documented wiring breaks the benchmark too.

Three measurement decisions, each because the obvious alternative flattered us:

  • Start-up is a bracket. Flutter's FIRSTCONTENT is a UI-thread callback that runs before that frame is rasterised, while our FIRSTFRAME fires once the form is on screen. Comparing them charges one runtime for rasterising its first screen and not the other — which is what the harness this replaces did. Flutter's figure is reported as a range and the ratio uses the end least favourable to us.
  • Executable code is every Mach-O in the bundle, not the main executable. On iOS a Flutter application's own code is not in the executable at all: Runner is a thin launcher and the Dart image sits in Frameworks/App.framework. Sizing the executable compared our whole runtime against their stub.
  • Assets are staged from Flutter's own built bundle. Staging the whole asset package ships files Flutter tree-shakes away; staging only the 1x images ships fewer than Flutter does.

And two refusals rather than a substituted number:

  • iOS start-up and memory are not measured. Dart cannot AOT-compile for the simulator, so a simulator run would time Flutter's JIT debug engine against our release build. Sizes come from release device bundles, which need no signing.
  • Desktop is the native ports only — AppKit, clang-cl, GTK3/Cairo — never JavaSE, whose bundled JVM and dependency directory are not the same kind of artifact as Flutter's native bundle.

Nothing contacts the build server: the *-source and local-* targets build on the runner. Only our own numbers are gated, so a Flutter SDK upgrade that grows their build cannot turn ours red.

Fidelity work in this PR

  • RoundBorder draws itself when there is no shadow and no uiid mode, instead of going through a component-sized offscreen image. The cache hides the cost for a static shape; for one that animates its size it does not — a circle growing to 1618×1618 threw away a 10MB surface per frame.
  • A paint-only shift needs a box it can paint into. Component.paintInternalImpl clips every component to its own rectangle, so FractionalTranslation drew most of itself into the discarded region — the feature-discovery circle rendered as a quadrant with two straight edges meeting at its centre.
  • FittedBox was a pass-through. Flutter lays its child out unbounded and scales the result, which is why text inside one shrinks instead of wrapping.
  • Card rebuilt its border every time, and RoundRectBorder caches its shadow against the border instance, so every rebuild re-rendered it with a gaussian blur. With the cache off it also translates the live Graphics by the shadow offset and never undoes it, so cards drifted 9px down and 4px across, accumulating down the page.

Verification

  • 398 flutter-runtime tests, plus 21 new tests for the benchmark's arithmetic
  • Parity sweep 48/48 routes: device mean 2.06%, median 1.66%; /demo/card 14.98% → 2.30%, /demo/grid-lists 26.30% → 0.32%
  • prepare.sh verified end to end; the generated project builds 563 Java files from 159 Dart files, which also exercises the documented user path
  • actionlint 74/74, copyright and control-character gates clean against the merge base

Not yet proven

No benchmark platform adapter has been exercised end to end — run_bench.py --list reports that rather than implying otherwise, and the first CI run is the thing to review. The native compile steps (xcodebuild, gradle, clang-cl, GTK3) have not run on a runner.

This is also the first mention of the feature in docs/, which has carried none until now.

github-code-quality[bot]
github-code-quality Bot found potential problems Sep 22, 2026
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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 0.6, 2.1, 1.7

Metric Codename One Flutter Ratio Winner
Installed size 78.2 MB 95.8 MB 1.23x Codename One
Executable code 4.6 MB 20.6 MB 4.43x Codename One
Download size (zipped) 78.2 MB 95.8 MB 1.23x Codename One
Cold start to first frame on screen 439 ms 1686 ms 3.58x Codename One
Memory at rest 44.6 MB 86.0 MB 1.92x 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 186 ms 2.07x
longArithmetic 64 ms 58 ms 0.91x
mathTranscendental 226 ms 349 ms 1.54x
arraySequential 27 ms 36 ms 1.33x
arrayRandom 348 ms 441 ms 1.27x
objectAllocation 67 ms 47 ms 0.70x
valueEscape 7 ms 7 ms 1.00x
hashMapChurn 140 ms 311 ms 2.22x
stringBuilding 95 ms 129 ms 1.36x
recursion 84 ms 272 ms 3.24x
quicksortBench 127 ms 153 ms 1.21x
Geometric mean 1.40x

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.

javascript

9 interleaved rounds; host load 1.71, 0.92, 0.38

Metric Codename One Flutter Ratio Winner
Installed size 103.8 MB 122.5 MB 1.18x Codename One
Executable code 12.7 MB 25.2 MB 1.99x Codename One
Download size (zipped) 76.3 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 542 ms wrong result Flutter: wrong result
longArithmetic 2922 ms did not run Flutter: did not run
mathTranscendental 265 ms did not run Flutter: did not run
arraySequential 134 ms 60 ms 0.45x
arrayRandom 669 ms wrong result Flutter: wrong result
objectAllocation 21 ms 16 ms 0.76x
valueEscape 85 ms 5 ms 0.06x
hashMapChurn 575 ms 167 ms 0.29x
stringBuilding 285 ms 68 ms 0.24x
recursion 285 ms 264 ms 0.93x
quicksortBench 291 ms wrong result Flutter: wrong result
Geometric mean 0.33x

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 0.17, 2.85, 2.43

Metric Codename One Flutter Ratio Winner
Installed size 110.9 MB 143.8 MB 1.30x Codename One
Executable code 13.8 MB 16.1 MB 1.17x Codename One
Download size (zipped) 80.7 MB 92.9 MB 1.15x Codename One
Cold start to first frame on screen 155 ms 240 ms 1.54x Codename One
Memory at rest 84.4 MB 226.2 MB 2.71x 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 74 ms 183 ms 2.47x
longArithmetic 55 ms 55 ms 1.00x
mathTranscendental 253 ms 276 ms 1.09x
arraySequential 16 ms 35 ms 2.19x
arrayRandom 223 ms 320 ms 1.44x
objectAllocation 23 ms 40 ms 1.74x
valueEscape 5 ms 7 ms 1.40x
hashMapChurn 49 ms 327 ms 6.67x
stringBuilding 35 ms 110 ms 3.14x
recursion 87 ms 258 ms 2.97x
quicksortBench 138 ms 149 ms 1.08x
Geometric mean 1.93x

Gate: within tolerance against scripts/flutter-bench/baseline. Smaller than its baseline, which does not fail the gate: Executable code -0.42%; Installed size -0.01%; Download size (zipped) -0.07% -- rebaseline to tighten. To accept the move, download this platform's baseline-<platform>.json artifact and run python3 scripts/flutter-bench/flutter_baseline.py calibrate --pr 5883 --reason "<why these moved>" baseline-linux.json, then commit the overlay it writes.

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 107.3 MB 121.1 MB 1.13x Codename One
Executable code 11.1 MB 14.1 MB 1.27x Codename One
Download size (zipped) 77.7 MB 86.4 MB 1.11x Codename One
Cold start to first frame on screen 125 ms 208 ms 1.70x Codename One
Memory at rest 57.9 MB 92.1 MB 1.59x 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 70 ms 161 ms 2.30x
longArithmetic 53 ms 51 ms 0.96x
mathTranscendental 161 ms 195 ms 1.21x
arraySequential 8 ms 30 ms 3.75x
arrayRandom 203 ms 235 ms 1.16x
objectAllocation 16 ms 27 ms 1.69x
valueEscape 1 ms 6 ms 6.00x
hashMapChurn 36 ms 250 ms 6.94x
stringBuilding 28 ms 92 ms 3.29x
recursion 153 ms 233 ms 1.52x
quicksortBench 123 ms 128 ms 1.04x
Geometric mean 2.14x

Gate: within tolerance against scripts/flutter-bench/baseline. Smaller than its baseline, which does not fail the gate: Executable code -12.70%; Installed size -1.53%; Download size (zipped) -0.97% -- rebaseline to tighten. To accept the move, download this platform's baseline-<platform>.json artifact and run python3 scripts/flutter-bench/flutter_baseline.py calibrate --pr 5883 --reason "<why these moved>" baseline-windows.json, then commit the overlay it writes.

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 18 of 18 measured metrics across 4 platform(s).

@shai-almog

shai-almog commented Sep 22, 2026 •
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Compared 12 screenshots: 12 matched.
✅ JavaSE simulator integration screenshots matched stored baselines.

@shai-almog

shai-almog commented Sep 22, 2026 •
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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 vs base Geometry
FlatButton pressed dark normal 91.3% 0.899 3.10 0.0 ok
Tabs normal light normal 92.3% 0.914 3.05 0.0 ok
Button pressed dark normal 92.6% 0.949 4.32 0.0 ok
FlatButton normal dark normal 93.2% 0.938 2.69 0.0 ok
Button disabled dark normal 93.3% 0.928 2.20 0.0 ok
Button pressed light normal 93.3% 0.952 3.68 0.0 ok
FlatButton normal light normal 93.7% 0.941 2.29 0.0 ok
FlatButton pressed light normal 93.8% 0.942 2.56 0.0 ok
FloatingActionButton pressed light normal 94.4% 0.927 2.82 0.0 OFF (h 0.88)
RadioButton normal dark normal 94.5% 0.963 2.19 0.0 ok
RadioButton normal light normal 94.7% 0.964 1.85 0.0 ok
CheckBox selected dark normal 94.7% 0.950 2.60 0.0 ok
RadioButton selected dark normal 94.8% 0.963 2.42 0.0 ok
CheckBox normal dark normal 94.9% 0.952 2.69 0.0 ok
Button normal dark normal 94.9% 0.949 3.16 0.0 ok
CheckBox normal light normal 95.0% 0.953 2.30 0.0 ok
Toolbar normal dark normal 95.1% 0.906 1.60 0.0 ok
RaisedButton pressed dark normal 95.2% 0.950 2.39 0.0 ok
CheckBox disabled dark normal 95.2% 0.954 1.47 0.0 ok
CheckBox disabled light normal 95.2% 0.956 1.34 0.0 ok
Tabs normal dark normal 95.2% 0.913 3.65 0.0 ok
RadioButton disabled dark normal 95.3% 0.963 1.18 0.0 ok
RadioButton selected light normal 95.3% 0.964 1.84 0.0 ok
CheckBox selected light normal 95.4% 0.952 2.06 0.0 ok
Switch selected light normal 95.4% 0.966 1.59 0.0 ok
Switch selected dark normal 95.5% 0.966 1.86 0.0 ok
RadioButton disabled light normal 95.5% 0.966 1.08 0.0 ok
Switch disabled dark normal 95.6% 0.961 0.85 0.0 ok
Dialog normal light normal 95.7% 0.930 2.30 0.0 ok
RaisedButton pressed light normal 95.8% 0.958 2.16 0.0 ok
Button normal light normal 95.8% 0.953 2.46 0.0 ok
Dialog normal dark normal 95.8% 0.932 2.30 0.0 ok
Switch normal light normal 96.0% 0.961 1.45 0.0 ok
FloatingActionButton normal light normal 96.1% 0.937 1.14 0.0 ok
FloatingActionButton pressed dark normal 96.2% 0.951 2.45 0.0 ok
Switch normal dark normal 96.2% 0.962 1.39 0.0 ok
TextField disabled dark normal 96.2% 0.965 0.76 0.0 ok
RaisedButton normal dark normal 96.4% 0.952 1.78 0.0 ok
Switch disabled light normal 96.4% 0.970 0.61 0.0 ok
Button disabled light normal 96.8% 0.960 1.06 0.0 ok
ProgressBar normal dark normal 96.9% 0.967 2.03 0.0 OFF (h 1.50)
RaisedButton disabled dark normal 97.0% 0.955 0.89 0.0 ok
FloatingActionButton normal dark normal 97.1% 0.952 1.43 0.0 ok
ProgressBar normal light normal 97.3% 0.974 1.53 0.0 OFF (h 1.50)
RaisedButton disabled light normal 97.3% 0.961 0.79 0.0 ok
TextField disabled light normal 97.3% 0.965 0.79 0.0 ok
RaisedButton normal light normal 97.3% 0.961 1.40 0.0 ok
TextField normal dark normal 97.6% 0.958 1.83 0.0 ok
TextField normal light normal 97.6% 0.958 1.63 0.0 ok
Slider normal dark normal 98.4% 0.990 0.87 0.0 ok
Toolbar normal light normal 98.7% 0.974 1.28 0.0 ok
Slider normal light normal 99.0% 0.991 0.47 0.0 ok
Slider disabled dark normal 99.6% 0.993 0.22 0.0 ok
Slider disabled light normal 99.6% 0.993 0.18 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)
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)

    native FlatButton_pressed_dark cn1 FlatButton_pressed_dark
    Left: native widget. Right: Codename One render.

  • Tabs_normal_light -- 92.28% fidelity (SSIM 0.9140) (no change)

    native Tabs_normal_light cn1 Tabs_normal_light
    Left: native widget. Right: Codename One render.

  • Button_pressed_dark -- 92.61% fidelity (SSIM 0.9485) (no change)

    native Button_pressed_dark cn1 Button_pressed_dark
    Left: native widget. Right: Codename One render.

  • FlatButton_normal_dark -- 93.24% fidelity (SSIM 0.9381) (no change)

    native FlatButton_normal_dark cn1 FlatButton_normal_dark
    Left: native widget. Right: Codename One render.

  • Button_disabled_dark -- 93.26% fidelity (SSIM 0.9278) (no change)

    native Button_disabled_dark cn1 Button_disabled_dark
    Left: native widget. Right: Codename One render.

  • Button_pressed_light -- 93.34% fidelity (SSIM 0.9521) (no change)

    native Button_pressed_light cn1 Button_pressed_light
    Left: native widget. Right: Codename One render.

  • FlatButton_normal_light -- 93.72% fidelity (SSIM 0.9410) (no change)

    native FlatButton_normal_light cn1 FlatButton_normal_light
    Left: native widget. Right: Codename One render.

  • FlatButton_pressed_light -- 93.77% fidelity (SSIM 0.9424) (no change)

    native FlatButton_pressed_light cn1 FlatButton_pressed_light
    Left: native widget. Right: Codename One render.

  • FloatingActionButton_pressed_light -- 94.44% fidelity (SSIM 0.9273) (no change)

    native FloatingActionButton_pressed_light cn1 FloatingActionButton_pressed_light
    Left: native widget. Right: Codename One render.

  • RadioButton_normal_dark -- 94.46% fidelity (SSIM 0.9630) (no change)

    native RadioButton_normal_dark cn1 RadioButton_normal_dark
    Left: native widget. Right: Codename One render.

  • RadioButton_normal_light -- 94.69% fidelity (SSIM 0.9643) (no change)

    native RadioButton_normal_light cn1 RadioButton_normal_light
    Left: native widget. Right: Codename One render.

  • CheckBox_selected_dark -- 94.71% fidelity (SSIM 0.9502) (no change)

    native CheckBox_selected_dark cn1 CheckBox_selected_dark
    Left: native widget. Right: Codename One render.

  • RadioButton_selected_dark -- 94.79% fidelity (SSIM 0.9630) (no change)

    native RadioButton_selected_dark cn1 RadioButton_selected_dark
    Left: native widget. Right: Codename One render.

  • CheckBox_normal_dark -- 94.93% fidelity (SSIM 0.9516) (no change)

    native CheckBox_normal_dark cn1 CheckBox_normal_dark
    Left: native widget. Right: Codename One render.

  • Button_normal_dark -- 94.94% fidelity (SSIM 0.9491) (no change)

    native Button_normal_dark cn1 Button_normal_dark
    Left: native widget. Right: Codename One render.

  • CheckBox_normal_light -- 95.03% fidelity (SSIM 0.9531) (no change)

    native CheckBox_normal_light cn1 CheckBox_normal_light
    Left: native widget. Right: Codename One render.

  • Toolbar_normal_dark -- 95.07% fidelity (SSIM 0.9059) (no change)

    native Toolbar_normal_dark cn1 Toolbar_normal_dark
    Left: native widget. Right: Codename One render.

  • RaisedButton_pressed_dark -- 95.19% fidelity (SSIM 0.9501) (no change)

    native RaisedButton_pressed_dark cn1 RaisedButton_pressed_dark
    Left: native widget. Right: Codename One render.

  • CheckBox_disabled_dark -- 95.20% fidelity (SSIM 0.9538) (no change)

    native CheckBox_disabled_dark cn1 CheckBox_disabled_dark
    Left: native widget. Right: Codename One render.

  • CheckBox_disabled_light -- 95.21% fidelity (SSIM 0.9562) (no change)

    native CheckBox_disabled_light cn1 CheckBox_disabled_light
    Left: native widget. Right: Codename One render.

  • Tabs_normal_dark -- 95.23% fidelity (SSIM 0.9125) (no change)

    native Tabs_normal_dark cn1 Tabs_normal_dark
    Left: native widget. Right: Codename One render.

  • RadioButton_disabled_dark -- 95.29% fidelity (SSIM 0.9630) (no change)

    native RadioButton_disabled_dark cn1 RadioButton_disabled_dark
    Left: native widget. Right: Codename One render.

  • RadioButton_selected_light -- 95.33% fidelity (SSIM 0.9642) (no change)

    native RadioButton_selected_light cn1 RadioButton_selected_light
    Left: native widget. Right: Codename One render.

  • CheckBox_selected_light -- 95.37% fidelity (SSIM 0.9524) (no change)

    native CheckBox_selected_light cn1 CheckBox_selected_light
    Left: native widget. Right: Codename One render.

  • Switch_selected_light -- 95.37% fidelity (SSIM 0.9658) (no change)

    native Switch_selected_light cn1 Switch_selected_light
    Left: native widget. Right: Codename One render.

  • Switch_selected_dark -- 95.45% fidelity (SSIM 0.9656) (no change)

    native Switch_selected_dark cn1 Switch_selected_dark
    Left: native widget. Right: Codename One render.

  • RadioButton_disabled_light -- 95.46% fidelity (SSIM 0.9657) (no change)

    native RadioButton_disabled_light cn1 RadioButton_disabled_light
    Left: native widget. Right: Codename One render.

  • Switch_disabled_dark -- 95.57% fidelity (SSIM 0.9613) (no change)

    native Switch_disabled_dark cn1 Switch_disabled_dark
    Left: native widget. Right: Codename One render.

  • Dialog_normal_light -- 95.65% fidelity (SSIM 0.9300) (no change)

    native Dialog_normal_light cn1 Dialog_normal_light
    Left: native widget. Right: Codename One render.

  • RaisedButton_pressed_light -- 95.78% fidelity (SSIM 0.9578) (no change)

    native RaisedButton_pressed_light cn1 RaisedButton_pressed_light
    Left: native widget. Right: Codename One render.

  • Button_normal_light -- 95.79% fidelity (SSIM 0.9528) (no change)

    native Button_normal_light cn1 Button_normal_light
    Left: native widget. Right: Codename One render.

  • Dialog_normal_dark -- 95.79% fidelity (SSIM 0.9322) (no change)

    native Dialog_normal_dark cn1 Dialog_normal_dark
    Left: native widget. Right: Codename One render.

  • Switch_normal_light -- 95.97% fidelity (SSIM 0.9612) (no change)

    native Switch_normal_light cn1 Switch_normal_light
    Left: native widget. Right: Codename One render.

  • FloatingActionButton_normal_light -- 96.09% fidelity (SSIM 0.9367) (no change)

    native FloatingActionButton_normal_light cn1 FloatingActionButton_normal_light
    Left: native widget. Right: Codename One render.

  • FloatingActionButton_pressed_dark -- 96.16% fidelity (SSIM 0.9513) (no change)

    native FloatingActionButton_pressed_dark cn1 FloatingActionButton_pressed_dark
    Left: native widget. Right: Codename One render.

  • Switch_normal_dark -- 96.17% fidelity (SSIM 0.9616) (no change)

    native Switch_normal_dark cn1 Switch_normal_dark
    Left: native widget. Right: Codename One render.

  • TextField_disabled_dark -- 96.21% fidelity (SSIM 0.9648) (no change)

    native TextField_disabled_dark cn1 TextField_disabled_dark
    Left: native widget. Right: Codename One render.

  • RaisedButton_normal_dark -- 96.41% fidelity (SSIM 0.9516) (no change)

    native RaisedButton_normal_dark cn1 RaisedButton_normal_dark
    Left: native widget. Right: Codename One render.

  • Switch_disabled_light -- 96.43% fidelity (SSIM 0.9698) (no change)

    native Switch_disabled_light cn1 Switch_disabled_light
    Left: native widget. Right: Codename One render.

  • Button_disabled_light -- 96.80% fidelity (SSIM 0.9596) (no change)

    native Button_disabled_light cn1 Button_disabled_light
    Left: native widget. Right: Codename One render.

  • ProgressBar_normal_dark -- 96.91% fidelity (SSIM 0.9669) (no change)

    native ProgressBar_normal_dark cn1 ProgressBar_normal_dark
    Left: native widget. Right: Codename One render.

  • RaisedButton_disabled_dark -- 97.02% fidelity (SSIM 0.9549) (no change)

    native RaisedButton_disabled_dark cn1 RaisedButton_disabled_dark
    Left: native widget. Right: Codename One render.

  • FloatingActionButton_normal_dark -- 97.07% fidelity (SSIM 0.9521) (no change)

    native FloatingActionButton_normal_dark cn1 FloatingActionButton_normal_dark
    Left: native widget. Right: Codename One render.

  • ProgressBar_normal_light -- 97.26% fidelity (SSIM 0.9739) (no change)

    native ProgressBar_normal_light cn1 ProgressBar_normal_light
    Left: native widget. Right: Codename One render.

  • RaisedButton_disabled_light -- 97.26% fidelity (SSIM 0.9611) (no change)

    native RaisedButton_disabled_light cn1 RaisedButton_disabled_light
    Left: native widget. Right: Codename One render.

  • TextField_disabled_light -- 97.29% fidelity (SSIM 0.9649) (no change)

    native TextField_disabled_light cn1 TextField_disabled_light
    Left: native widget. Right: Codename One render.

  • RaisedButton_normal_light -- 97.32% fidelity (SSIM 0.9613) (no change)

    native RaisedButton_normal_light cn1 RaisedButton_normal_light
    Left: native widget. Right: Codename One render.

  • TextField_normal_dark -- 97.61% fidelity (SSIM 0.9583) (no change)

    native TextField_normal_dark cn1 TextField_normal_dark
    Left: native widget. Right: Codename One render.

  • TextField_normal_light -- 97.62% fidelity (SSIM 0.9582) (no change)

    native TextField_normal_light cn1 TextField_normal_light
    Left: native widget. Right: Codename One render.

  • Slider_normal_dark -- 98.39% fidelity (SSIM 0.9900) (no change)

    native Slider_normal_dark cn1 Slider_normal_dark
    Left: native widget. Right: Codename One render.

  • Toolbar_normal_light -- 98.69% fidelity (SSIM 0.9739) (no change)

    native Toolbar_normal_light cn1 Toolbar_normal_light
    Left: native widget. Right: Codename One render.

  • Slider_normal_light -- 98.95% fidelity (SSIM 0.9908) (no change)

    native Slider_normal_light cn1 Slider_normal_light
    Left: native widget. Right: Codename One render.

  • Slider_disabled_dark -- 99.56% fidelity (SSIM 0.9927) (no change)

    native Slider_disabled_dark cn1 Slider_disabled_dark
    Left: native widget. Right: Codename One render.

  • Slider_disabled_light -- 99.59% fidelity (SSIM 0.9932) (no change)

    native Slider_disabled_light cn1 Slider_disabled_light
    Left: native widget. Right: Codename One render.

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github-actions Bot commented Sep 22, 2026 •
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✅ Continuous Quality Report

Test & Coverage

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)
    • ✅ core-unittests: 0 findings (no issues)
    • ✅ ios: 0 findings (no issues)
    • ✅ javac: 0 findings (no issues)
    • ✅ project-model: 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.

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Cloudflare Preview

@shai-almog

shai-almog commented Sep 22, 2026 •
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Compared 185 screenshots: 185 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 27ms / native 3ms = 9.0x speedup
SIMD float-mul (64K x300) java 26ms / native 3ms = 8.6x 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 36.000 ms
Base64 CN1 decode 45.000 ms
Base64 SIMD encode 51.000 ms
Base64 encode ratio (SIMD/CN1) 1.417x (41.7% slower)
Base64 SIMD decode 56.000 ms
Base64 decode ratio (SIMD/CN1) 1.244x (24.4% slower)
Image encode benchmark iterations 100
Image createMask (SIMD off) 6.000 ms
Image createMask (SIMD on) 4.000 ms
Image createMask ratio (SIMD on/off) 0.667x (33.3% faster)
Image applyMask (SIMD off) 19.000 ms
Image applyMask (SIMD on) 27.000 ms
Image applyMask ratio (SIMD on/off) 1.421x (42.1% slower)
Image modifyAlpha (SIMD off) 23.000 ms
Image modifyAlpha (SIMD on) 17.000 ms
Image modifyAlpha ratio (SIMD on/off) 0.739x (26.1% faster)
Image modifyAlpha removeColor (SIMD off) 24.000 ms
Image modifyAlpha removeColor (SIMD on) 14.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off) 0.583x (41.7% 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 15% (time) / 15% (RAM) away from its baseline in vm/selfhost/perf-baseline/ fails: above it is a regression, below it an improvement that has to be rebaselined (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 1.41x (base 1.41x, +0.0%) 0.67x (base 1.00x, -32.5%) ok
translator (self) 4 0.77x (base 0.73x, +6.2%) 0.47x (base 0.47x, +1.4%) ok
intArithmetic 4 0.99x (base 0.99x, -0.4%) 0.05x (base 0.05x, +0.4%) ok
longArithmetic 4 0.99x (base 0.99x, +0.2%) 0.05x (base 0.05x, +0.6%) ok
mathTranscendental 4 0.93x (base 0.94x, -1.0%) 0.06x (base 0.06x, -0.5%) ok
arraySequential 4 1.64x (base 1.75x, -6.0%) 0.38x (base 0.38x, +0.1%) ok
arrayRandom 4 1.00x (base 1.00x, +0.2%) 0.23x (base 0.23x, +0.1%) ok
objectAllocation 4 1.56x (base 1.65x, -5.4%) 0.24x (base 0.21x, +14.6%) ok
valueEscape 4 0.10x (base 0.10x, -0.3%) 0.05x (base 0.04x, +1.1%) ok
hashMapChurn 4 1.52x (base 1.59x, -4.7%) 0.09x (base 0.09x, -2.1%) ok
stringBuilding 4 1.41x (base 1.39x, +1.7%) 0.27x (base 0.27x, +0.1%) ok
recursion 4 1.47x (base 1.44x, +1.9%) 0.06x (base 0.06x, +0.3%) ok
quicksort 4 1.03x (base 1.06x, -2.4%) 0.12x (base 0.12x, +0.3%) ok

Result: no regression

@shai-almog

shai-almog commented Sep 22, 2026 •
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Compared 170 screenshots: 170 matched.

Native Android coverage

  • 📊 Line coverage: 16.01% (26002/162390 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
    • Other counters: instruction 14.37% (122147/850229), branch 9.91% (8466/85441), complexity 7.81% (6525/83503), method 11.59% (4648/40094), class 19.78% (960/4853)
    • Lowest covered classes
      • kotlin.collections.kotlin.collections.ArraysKt___ArraysKt – 0.00% (0/6367 lines covered)
      • kotlin.collections.unsigned.kotlin.collections.unsigned.UArraysKt___UArraysKt – 0.00% (0/2384 lines covered)
      • org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.ClassReader – 0.00% (0/1524 lines covered)
      • org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.MethodWriter – 0.00% (0/922 lines covered)
      • kotlin.sequences.kotlin.sequences.SequencesKt___SequencesKt – 0.00% (0/736 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% (0/625 lines covered)
      • com.codename1.androidcompat.rt.com.codename1.androidcompat.rt.TextXmlPullParser – 0.00% (0/623 lines covered)
      • com.codename1.androidcompat.androidx.constraintlayout.core.widgets.com.codename1.androidcompat.androidx.constraintlayout.core.widgets.Flow – 0.00% (0/576 lines covered)

✅ Native Android screenshot tests passed.

Native Android coverage

  • 📊 Line coverage: 16.01% (26002/162390 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
    • Other counters: instruction 14.37% (122147/850229), branch 9.91% (8466/85441), complexity 7.81% (6525/83503), method 11.59% (4648/40094), class 19.78% (960/4853)
    • Lowest covered classes
      • kotlin.collections.kotlin.collections.ArraysKt___ArraysKt – 0.00% (0/6367 lines covered)
      • kotlin.collections.unsigned.kotlin.collections.unsigned.UArraysKt___UArraysKt – 0.00% (0/2384 lines covered)
      • org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.ClassReader – 0.00% (0/1524 lines covered)
      • org.jacoco.agent.rt.internal_0e20598.asm.org.jacoco.agent.rt.internal_0e20598.asm.MethodWriter – 0.00% (0/922 lines covered)
      • kotlin.sequences.kotlin.sequences.SequencesKt___SequencesKt – 0.00% (0/736 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% (0/625 lines covered)
      • com.codename1.androidcompat.rt.com.codename1.androidcompat.rt.TextXmlPullParser – 0.00% (0/623 lines covered)
      • com.codename1.androidcompat.androidx.constraintlayout.core.widgets.com.codename1.androidcompat.androidx.constraintlayout.core.widgets.Flow – 0.00% (0/576 lines covered)

Benchmark Results

Detailed Performance Metrics

Metric Duration
SIMD kernel backend scalar fallback (no native SIMD)
SIMD int-add (64K x300) java 155ms / native 214ms = 0.7x speedup
SIMD float-mul (64K x300) java 198ms / native 136ms = 1.4x 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 87.000 ms
Base64 CN1 decode 84.000 ms
Base64 native encode 440.000 ms
Base64 encode ratio (CN1/native) 0.198x (80.2% faster)
Base64 native decode 276.000 ms
Base64 decode ratio (CN1/native) 0.304x (69.6% faster)
Image encode benchmark status skipped (SIMD unsupported)

@shai-almog

shai-almog commented Sep 22, 2026 •
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Compared 185 screenshots: 185 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 5ms = 11.2x speedup
SIMD float-mul (64K x300) java 56ms / native 5ms = 11.2x 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 75.000 ms
Base64 CN1 decode 88.000 ms
Base64 SIMD encode 113.000 ms
Base64 encode ratio (SIMD/CN1) 1.507x (50.7% slower)
Base64 SIMD decode 100.000 ms
Base64 decode ratio (SIMD/CN1) 1.136x (13.6% slower)
Image encode benchmark iterations 100
Image createMask (SIMD off) 8.000 ms
Image createMask (SIMD on) 4.000 ms
Image createMask ratio (SIMD on/off) 0.500x (50.0% faster)
Image applyMask (SIMD off) 26.000 ms
Image applyMask (SIMD on) 26.000 ms
Image applyMask ratio (SIMD on/off) 1.000x (0.0% slower)
Image modifyAlpha (SIMD off) 31.000 ms
Image modifyAlpha (SIMD on) 21.000 ms
Image modifyAlpha ratio (SIMD on/off) 0.677x (32.3% faster)
Image modifyAlpha removeColor (SIMD off) 29.000 ms
Image modifyAlpha removeColor (SIMD on) 41.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off) 1.414x (41.4% slower)

@shai-almog

shai-almog commented Sep 22, 2026 •
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Compared 185 screenshots: 185 matched.
Native Linux port (x64), GTK3/Cairo/Pango, ParparVM bytecode-to-C (no JVM): the hellocodenameone screenshot suite rendered by a native ELF built + run on the GitHub x64 runner. Baseline: scripts/linux/screenshots.

ParparVM vs HotSpot (JDK 25): Linux x64

Runner CPU: AMD EPYC 9V74 80-Core Processor (baseline linux-x64@amd-epyc-9v74-80-core-processor)

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 15% (time) / 15% (RAM) away from its baseline in vm/selfhost/perf-baseline/ fails: above it is a regression, below it an improvement that has to be rebaselined (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 0.92x (base 0.90x, +3.0%) 0.80x (base 0.96x, -17.0%) ok
translator (self) 4 0.60x (base 0.63x, -4.6%) 0.46x (base 0.46x, -0.2%) ok
intArithmetic 4 1.10x (base 1.10x, -0.0%) 0.07x (base 0.06x, +35.8%) ok
longArithmetic 4 1.08x (base 1.08x, +0.0%) 0.08x (base 0.06x, +36.6%) ok
mathTranscendental 4 1.09x (base 1.09x, -0.2%) 0.08x (base 0.07x, +11.9%) ok
arraySequential 4 2.57x (base 2.81x, -8.5%) 0.36x (base 0.35x, +0.1%) ok
arrayRandom 4 1.02x (base 1.02x, -0.8%) 0.21x (base 0.21x, +0.5%) ok
objectAllocation 4 1.20x (base 1.21x, -0.7%) 0.31x (base 0.39x, -21.0%) ok
valueEscape 4 0.10x (base 0.10x, -0.0%) 0.04x (base 0.06x, -27.5%) ok
hashMapChurn 4 1.10x (base 1.10x, -0.1%) 0.10x (base 0.10x, +0.9%) ok
stringBuilding 4 1.51x (base 1.49x, +1.3%) 0.26x (base 0.26x, -0.2%) ok
recursion 4 1.34x (base 1.24x, +7.4%) 0.08x (base 0.06x, +36.4%) ok
quicksort 4 1.10x (base 1.07x, +3.3%) 0.13x (base 0.11x, +16.0%) ok

Result: no regression

@shai-almog

shai-almog commented Sep 22, 2026 •
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Compared 185 screenshots: 185 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 15% (time) / 15% (RAM) away from its baseline in vm/selfhost/perf-baseline/ fails: above it is a regression, below it an improvement that has to be rebaselined (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 1.05x (base 0.93x, +12.3%) 0.71x (base 0.72x, -1.9%) ok
translator (self) 4 0.77x (base 0.70x, +10.1%) 0.46x (base 0.45x, +2.7%) ok
intArithmetic 4 1.04x (base 1.04x, -0.0%) 0.03x (base 0.03x, +0.4%) ok
longArithmetic 4 0.79x (base 0.79x, -0.4%) 0.03x (base 0.03x, -1.3%) ok
mathTranscendental 4 1.10x (base 1.10x, +0.0%) 0.03x (base 0.03x, +1.1%) ok
arraySequential 4 0.39x (base 0.36x, +8.3%) 0.37x (base 0.37x, +0.3%) ok
arrayRandom 4 0.94x (base 0.94x, +0.2%) 0.20x (base 0.20x, -0.2%) ok
objectAllocation 4 1.91x (base 1.77x, +7.9%) 0.38x (base 0.38x, +0.3%) ok
valueEscape 4 0.51x (base 0.51x, -0.1%) 0.03x (base 0.03x, -1.8%) ok
hashMapChurn 4 0.83x (base 0.84x, -1.7%) 0.12x (base 0.12x, +1.7%) ok
stringBuilding 4 1.44x (base 1.36x, +5.9%) 0.27x (base 0.26x, +1.3%) ok
recursion 4 1.43x (base 1.43x, -0.0%) 0.03x (base 0.04x, -4.7%) ok
quicksort 4 1.00x (base 0.99x, +0.2%) 0.09x (base 0.09x, +1.2%) ok

Result: no regression

@shai-almog

shai-almog commented Sep 22, 2026 •
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Compared 185 screenshots: 185 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 48ms / native 3ms = 16.0x 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 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) 6.000 ms
Image createMask (SIMD on) 2.000 ms
Image createMask ratio (SIMD on/off) 0.333x (66.7% faster)
Image applyMask (SIMD off) 20.000 ms
Image applyMask (SIMD on) 18.000 ms
Image applyMask ratio (SIMD on/off) 0.900x (10.0% faster)
Image modifyAlpha (SIMD off) 17.000 ms
Image modifyAlpha (SIMD on) 12.000 ms
Image modifyAlpha ratio (SIMD on/off) 0.706x (29.4% faster)
Image modifyAlpha removeColor (SIMD off) 20.000 ms
Image modifyAlpha removeColor (SIMD on) 14.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off) 0.700x (30.0% 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 15% (time) / 15% (RAM) away from its baseline in vm/selfhost/perf-baseline/ fails: above it is a regression, below it an improvement that has to be rebaselined (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 1.16x (base 1.11x, +5.1%) 0.75x (base 0.97x, -23.1%) ok
translator (self) 4 0.84x (base 0.84x, +0.3%) 0.48x (base 0.43x, +11.6%) ok
intArithmetic 4 1.04x (base 1.04x, -0.0%) 0.06x (base 0.06x, +1.4%) ok
longArithmetic 4 0.79x (base 0.80x, -0.2%) 0.06x (base 0.06x, +1.7%) ok
mathTranscendental 4 0.74x (base 0.72x, +2.7%) 0.06x (base 0.06x, +0.3%) ok
arraySequential 4 0.39x (base 0.46x, -15.3%) 0.39x (base 0.39x, +0.1%) ok
arrayRandom 4 0.94x (base 0.94x, +0.6%) 0.23x (base 0.23x, +0.0%) ok
objectAllocation 4 1.83x (base 2.81x, -34.9%) 0.40x (base 0.43x, -6.7%) ok
valueEscape 4 0.76x (base 0.76x, +0.0%) 0.05x (base 0.05x, +0.6%) ok
hashMapChurn 4 0.98x (base 0.98x, -0.3%) 0.11x (base 0.12x, -10.3%) ok
stringBuilding 4 1.55x (base 1.43x, +8.6%) 0.27x (base 0.27x, -0.3%) ok
recursion 4 1.54x (base 1.46x, +5.4%) 0.06x (base 0.07x, -0.6%) ok
quicksort 4 1.01x (base 1.00x, +0.5%) 0.12x (base 0.12x, -0.2%) ok

Result: no regression

@github-actions

github-actions Bot commented Sep 22, 2026 •
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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

github-actions Bot commented Sep 22, 2026 •
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✅ ByteCodeTranslator Quality Report

Test & Coverage

  • ✅ Tests: 850 total, 0 failed, 57 skipped

Benchmark Results

  • Execution Time: 6523 ms

  • Hotspots (Top 20 sampled methods):

    • 9.61% com.codename1.tools.translator.BytecodeMethod.equals (93 samples)
    • 5.99% java.lang.Object.hashCode (58 samples)
    • 4.34% com.codename1.tools.translator.IteratorEscape.mangle (42 samples)
    • 4.03% java.lang.System.identityHashCode (39 samples)
    • 3.00% java.util.ArrayList.indexOf (29 samples)
    • 3.00% com.codename1.tools.translator.classfile.analysis.Frame.execute (29 samples)
    • 3.00% com.codename1.tools.translator.ByteCodeClass.fillVirtualMethodTable (29 samples)
    • 2.58% com.codename1.tools.translator.bytecodes.Invoke.resolveDirectTarget (25 samples)
    • 2.38% java.util.HashMap.hash (23 samples)
    • 2.17% com.codename1.tools.translator.Parser.cullMethods (21 samples)
    • 1.86% com.codename1.tools.translator.BytecodeMethod.updateInlinableFieldDependencies (18 samples)
    • 1.65% java.lang.String.equals (16 samples)
    • 1.65% java.io.FileOutputStream.writeBytes (16 samples)
    • 1.65% java.lang.StringBuilder.append (16 samples)
    • 1.34% java.util.HashMap.putVal (13 samples)
    • 1.34% com.codename1.tools.translator.BytecodeMethod.addToConstantPool (13 samples)
    • 1.24% com.codename1.tools.translator.Parser.writeOutput (12 samples)
    • 1.24% java.util.AbstractCollection.containsAll (12 samples)
    • 1.24% com.codename1.tools.translator.Parser.collectTypeTests (12 samples)
    • 1.03% com.codename1.tools.translator.DeadFieldElimination.run (10 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

shai-almog commented Sep 22, 2026 •
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Compared 206 screenshots: 206 matched.
✅ JavaScript-port screenshot tests passed.

@shai-almog

shai-almog commented Sep 22, 2026 •
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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)

    native Toolbar_normal_dark cn1 Toolbar_normal_dark
    Left: native widget. Right: Codename One render.

  • Button_normal_dark -- 79.28% fidelity (SSIM 0.9380) (no change)

    native Button_normal_dark cn1 Button_normal_dark
    Left: native widget. Right: Codename One render.

  • Button_disabled_dark -- 79.63% fidelity (SSIM 0.9423) (no change)

    native Button_disabled_dark cn1 Button_disabled_dark
    Left: native widget. Right: Codename One render.

  • RaisedButton_disabled_dark -- 81.15% fidelity (SSIM 0.9544) (no change)

    native RaisedButton_disabled_dark cn1 RaisedButton_disabled_dark
    Left: native widget. Right: Codename One render.

  • Tabs_normal_dark -- 86.22% fidelity (SSIM 0.8999) (+0.33 vs baseline)

    native Tabs_normal_dark cn1 Tabs_normal_dark
    Left: native widget. Right: Codename One render.

  • Button_pressed_dark -- 86.28% fidelity (SSIM 0.9483) (no change)

    native Button_pressed_dark cn1 Button_pressed_dark
    Left: native widget. Right: Codename One render.

  • Tabs_normal_light -- 86.43% fidelity (SSIM 0.8954) (+0.31 vs baseline)

    native Tabs_normal_light cn1 Tabs_normal_light
    Left: native widget. Right: Codename One render.

  • TextField_normal_light -- 86.49% fidelity (SSIM 0.9502) (no change)

    native TextField_normal_light cn1 TextField_normal_light
    Left: native widget. Right: Codename One render.

  • Toolbar_normal_light -- 86.94% fidelity (SSIM 0.9488) (no change)

    native Toolbar_normal_light cn1 Toolbar_normal_light
    Left: native widget. Right: Codename One render.

  • TextField_disabled_light -- 89.39% fidelity (SSIM 0.9540) (no change)

    native TextField_disabled_light cn1 TextField_disabled_light
    Left: native widget. Right: Codename One render.

  • Button_normal_light -- 89.45% fidelity (SSIM 0.9588) (no change)

    native Button_normal_light cn1 Button_normal_light
    Left: native widget. Right: Codename One render.

  • Button_pressed_light -- 89.45% fidelity (SSIM 0.9588) (no change)

    native Button_pressed_light cn1 Button_pressed_light
    Left: native widget. Right: Codename One render.

  • Spinner_normal_dark -- 90.72% fidelity (SSIM 0.8800) (no change)

    native Spinner_normal_dark cn1 Spinner_normal_dark
    Left: native widget. Right: Codename One render.

  • FlatButton_normal_dark -- 90.88% fidelity (SSIM 0.9805) (no change)

    native FlatButton_normal_dark cn1 FlatButton_normal_dark
    Left: native widget. Right: Codename One render.

  • Button_disabled_light -- 91.57% fidelity (SSIM 0.9621) (no change)

    native Button_disabled_light cn1 Button_disabled_light
    Left: native widget. Right: Codename One render.

  • Spinner_normal_light -- 91.58% fidelity (SSIM 0.9097) (no change)

    native Spinner_normal_light cn1 Spinner_normal_light
    Left: native widget. Right: Codename One render.

  • CheckBox_normal_light -- 91.66% fidelity (SSIM 0.9935) (no change)

    native CheckBox_normal_light cn1 CheckBox_normal_light
    Left: native widget. Right: Codename One render.

  • RadioButton_normal_light -- 91.66% fidelity (SSIM 0.9935) (no change)

    native RadioButton_normal_light cn1 RadioButton_normal_light
    Left: native widget. Right: Codename One render.

  • Slider_disabled_dark -- 92.13% fidelity (SSIM 0.9434) (no change)

    native Slider_disabled_dark cn1 Slider_disabled_dark
    Left: native widget. Right: Codename One render.

  • Switch_selected_light -- 92.13% fidelity (SSIM 0.9806) (no change)

    native Switch_selected_light cn1 Switch_selected_light
    Left: native widget. Right: Codename One render.

  • CheckBox_disabled_light -- 92.31% fidelity (SSIM 0.9948) (no change)

    native CheckBox_disabled_light cn1 CheckBox_disabled_light
    Left: native widget. Right: Codename One render.

  • RadioButton_disabled_light -- 92.31% fidelity (SSIM 0.9948) (no change)

    native RadioButton_disabled_light cn1 RadioButton_disabled_light
    Left: native widget. Right: Codename One render.

  • FlatButton_pressed_dark -- 92.38% fidelity (SSIM 0.9821) (no change)

    native FlatButton_pressed_dark cn1 FlatButton_pressed_dark
    Left: native widget. Right: Codename One render.

  • RaisedButton_disabled_light -- 92.40% fidelity (SSIM 0.9596) (no change)

    native RaisedButton_disabled_light cn1 RaisedButton_disabled_light
    Left: native widget. Right: Codename One render.

  • Slider_normal_dark -- 92.52% fidelity (SSIM 0.9441) (no change)

    native Slider_normal_dark cn1 Slider_normal_dark
    Left: native widget. Right: Codename One render.

  • TabsGeom_normal_light -- 93.13% fidelity (SSIM 0.8851) (+0.14 vs baseline)

    native TabsGeom_normal_light cn1 TabsGeom_normal_light
    Left: native widget. Right: Codename One render.

  • FlatButton_pressed_light -- 93.29% fidelity (SSIM 0.9811) (no change)

    native FlatButton_pressed_light cn1 FlatButton_pressed_light
    Left: native widget. Right: Codename One render.

  • TabsGeom_normal_dark -- 93.81% fidelity (SSIM 0.8925) (+0.14 vs baseline)

    native TabsGeom_normal_dark cn1 TabsGeom_normal_dark
    Left: native widget. Right: Codename One render.

  • FlatButton_normal_light -- 93.91% fidelity (SSIM 0.9811) (no change)

    native FlatButton_normal_light cn1 FlatButton_normal_light
    Left: native widget. Right: Codename One render.

  • Slider_disabled_light -- 93.96% fidelity (SSIM 0.9625) (no change)

    native Slider_disabled_light cn1 Slider_disabled_light
    Left: native widget. Right: Codename One render.

  • RaisedButton_pressed_dark -- 94.08% fidelity (SSIM 0.9659) (no change)

    native RaisedButton_pressed_dark cn1 RaisedButton_pressed_dark
    Left: native widget. Right: Codename One render.

  • RaisedButton_normal_dark -- 94.13% fidelity (SSIM 0.9660) (no change)

    native RaisedButton_normal_dark cn1 RaisedButton_normal_dark
    Left: native widget. Right: Codename One render.

  • RadioButton_selected_light -- 94.26% fidelity (SSIM 0.9903) (no change)

    native RadioButton_selected_light cn1 RadioButton_selected_light
    Left: native widget. Right: Codename One render.

  • RaisedButton_pressed_light -- 94.53% fidelity (SSIM 0.9633) (no change)

    native RaisedButton_pressed_light cn1 RaisedButton_pressed_light
    Left: native widget. Right: Codename One render.

  • GlassPanelPhoto_normal_dark -- 94.60% fidelity (SSIM 0.9505) (no change)

    native GlassPanelPhoto_normal_dark cn1 GlassPanelPhoto_normal_dark
    Left: native widget. Right: Codename One render.

  • RaisedButton_normal_light -- 94.64% fidelity (SSIM 0.9632) (no change)

    native RaisedButton_normal_light cn1 RaisedButton_normal_light
    Left: native widget. Right: Codename One render.

  • GlassPanelPhoto_normal_light -- 94.66% fidelity (SSIM 0.9507) (no change)

    native GlassPanelPhoto_normal_light cn1 GlassPanelPhoto_normal_light
    Left: native widget. Right: Codename One render.

  • Slider_normal_light -- 95.09% fidelity (SSIM 0.9588) (no change)

    native Slider_normal_light cn1 Slider_normal_light
    Left: native widget. Right: Codename One render.

  • CheckBox_disabled_dark -- 95.41% fidelity (SSIM 0.9924) (no change)

    native CheckBox_disabled_dark cn1 CheckBox_disabled_dark
    Left: native widget. Right: Codename One render.

  • RadioButton_disabled_dark -- 95.41% fidelity (SSIM 0.9924) (no change)

    native RadioButton_disabled_dark cn1 RadioButton_disabled_dark
    Left: native widget. Right: Codename One render.

  • Switch_normal_light -- 95.51% fidelity (SSIM 0.9863) (no change)

    native Switch_normal_light cn1 Switch_normal_light
    Left: native widget. Right: Codename One render.

  • CheckBox_selected_light -- 95.80% fidelity (SSIM 0.9951) (no change)

    native CheckBox_selected_light cn1 CheckBox_selected_light
    Left: native widget. Right: Codename One render.

  • CheckBox_normal_dark -- 95.84% fidelity (SSIM 0.9922) (no change)

    native CheckBox_normal_dark cn1 CheckBox_normal_dark
    Left: native widget. Right: Codename One render.

  • RadioButton_normal_dark -- 95.84% fidelity (SSIM 0.9922) (no change)

    native RadioButton_normal_dark cn1 RadioButton_normal_dark
    Left: native widget. Right: Codename One render.

  • Switch_selected_dark -- 95.90% fidelity (SSIM 0.9850) (no change)

    native Switch_selected_dark cn1 Switch_selected_dark
    Left: native widget. Right: Codename One render.

  • TextField_normal_dark -- 96.00% fidelity (SSIM 0.9370) (no change)

    native TextField_normal_dark cn1 TextField_normal_dark
    Left: native widget. Right: Codename One render.

  • RadioButton_selected_dark -- 96.13% fidelity (SSIM 0.9894) (no change)

    native RadioButton_selected_dark cn1 RadioButton_selected_dark
    Left: native widget. Right: Codename One render.

  • Switch_disabled_light -- 96.35% fidelity (SSIM 0.9896) (no change)

    native Switch_disabled_light cn1 Switch_disabled_light
    Left: native widget. Right: Codename One render.

  • TextField_disabled_dark -- 96.35% fidelity (SSIM 0.9395) (no change)

    native TextField_disabled_dark cn1 TextField_disabled_dark
    Left: native widget. Right: Codename One render.

  • Switch_normal_dark -- 96.80% fidelity (SSIM 0.9855) (no change)

    native Switch_normal_dark cn1 Switch_normal_dark
    Left: native widget. Right: Codename One render.

  • TabOne_normal_light -- 96.90% fidelity (SSIM 0.9480) (no change)

    native TabOne_normal_light cn1 TabOne_normal_light
    Left: native widget. Right: Codename One render.

  • GlassIcon_normal_dark -- 97.18% fidelity (SSIM 0.9547) (no change)

    native GlassIcon_normal_dark cn1 GlassIcon_normal_dark
    Left: native widget. Right: Codename One render.

  • GlassText_normal_dark -- 97.27% fidelity (SSIM 0.9563) (+0.06 vs baseline)

    native GlassText_normal_dark cn1 GlassText_normal_dark
    Left: native widget. Right: Codename One render.

  • GlassPanelGrey_normal_dark -- 97.35% fidelity (SSIM 0.9588) (no change)

    native GlassPanelGrey_normal_dark cn1 GlassPanelGrey_normal_dark
    Left: native widget. Right: Codename One render.

  • TabOne_normal_dark -- 97.36% fidelity (SSIM 0.9531) (no change)

    native TabOne_normal_dark cn1 TabOne_normal_dark
    Left: native widget. Right: Codename One render.

  • ProgressBar_normal_dark -- 97.47% fidelity (SSIM 0.9973) (no change)

    native ProgressBar_normal_dark cn1 ProgressBar_normal_dark
    Left: native widget. Right: Codename One render.

  • ProgressBar_normal_light -- 97.60% fidelity (SSIM 0.9989) (no change)

    native ProgressBar_normal_light cn1 ProgressBar_normal_light
    Left: native widget. Right: Codename One render.

  • GlassPanelRed_normal_dark -- 97.73% fidelity (SSIM 0.9795) (no change)

    native GlassPanelRed_normal_dark cn1 GlassPanelRed_normal_dark
    Left: native widget. Right: Codename One render.

  • CheckBox_selected_dark -- 97.85% fidelity (SSIM 0.9945) (no change)

    native CheckBox_selected_dark cn1 CheckBox_selected_dark
    Left: native widget. Right: Codename One render.

  • Dialog_normal_dark -- 97.86% fidelity (SSIM 0.9614) (no change)

    native Dialog_normal_dark cn1 Dialog_normal_dark
    Left: native widget. Right: Codename One render.

  • GlassPanelGrad_normal_dark -- 97.91% fidelity (SSIM 0.9752) (no change)

    native GlassPanelGrad_normal_dark cn1 GlassPanelGrad_normal_dark
    Left: native widget. Right: Codename One render.

  • Dialog_normal_light -- 97.95% fidelity (SSIM 0.9634) (no change)

    native Dialog_normal_light cn1 Dialog_normal_light
    Left: native widget. Right: Codename One render.

  • Switch_disabled_dark -- 98.01% fidelity (SSIM 0.9869) (no change)

    native Switch_disabled_dark cn1 Switch_disabled_dark
    Left: native widget. Right: Codename One render.

  • GlassIcon_normal_light -- 98.16% fidelity (SSIM 0.9750) (no change)

    native GlassIcon_normal_light cn1 GlassIcon_normal_light
    Left: native widget. Right: Codename One render.

  • GlassText_normal_light -- 98.31% fidelity (SSIM 0.9779) (+0.06 vs baseline)

    native GlassText_normal_light cn1 GlassText_normal_light
    Left: native widget. Right: Codename One render.

  • GlassPanelGrad_normal_light -- 98.41% fidelity (SSIM 0.9876) (no change)

    native GlassPanelGrad_normal_light cn1 GlassPanelGrad_normal_light
    Left: native widget. Right: Codename One render.

  • GlassPanelGrey_normal_light -- 98.70% fidelity (SSIM 0.9865) (no change)

    native GlassPanelGrey_normal_light cn1 GlassPanelGrey_normal_light
    Left: native widget. Right: Codename One render.

  • GlassPanelRed_normal_light -- 98.78% fidelity (SSIM 0.9900) (no change)

    native GlassPanelRed_normal_light cn1 GlassPanelRed_normal_light
    Left: native widget. Right: Codename One render.

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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)

    native Tabs_normal_dark cn1 Tabs_normal_dark
    Left: native widget. Right: Codename One render.

  • Tabs_normal_light -- 86.44% fidelity (SSIM 0.8961) (no change)

    native Tabs_normal_light cn1 Tabs_normal_light
    Left: native widget. Right: Codename One render.

  • Toolbar_normal_light -- 87.64% fidelity (SSIM 0.9511) (no change)

    native Toolbar_normal_light cn1 Toolbar_normal_light
    Left: native widget. Right: Codename One render.

  • Toolbar_normal_dark -- 87.70% fidelity (SSIM 0.9495) (no change)

    native Toolbar_normal_dark cn1 Toolbar_normal_dark
    Left: native widget. Right: Codename One render.

  • Button_pressed_dark -- 89.93% fidelity (SSIM 0.9576) (no change)

    native Button_pressed_dark cn1 Button_pressed_dark
    Left: native widget. Right: Codename One render.

  • TextField_normal_light -- 90.03% fidelity (SSIM 0.9576) (-0.37 vs baseline)

    native TextField_normal_light cn1 TextField_normal_light
    Left: native widget. Right: Codename One render.

  • Spinner_normal_dark -- 90.78% fidelity (SSIM 0.8814) (-0.69 vs baseline)

    native Spinner_normal_dark cn1 Spinner_normal_dark
    Left: native widget. Right: Codename One render.

  • TextField_disabled_light -- 91.13% fidelity (SSIM 0.9619) (-0.22 vs baseline)

    native TextField_disabled_light cn1 TextField_disabled_light
    Left: native widget. Right: Codename One render.

  • Spinner_normal_light -- 91.58% fidelity (SSIM 0.9099) (-0.21 vs baseline)

    native Spinner_normal_light cn1 Spinner_normal_light
    Left: native widget. Right: Codename One render.

  • RaisedButton_disabled_light -- 91.76% fidelity (SSIM 0.9613) (+0.15 vs baseline)

    native RaisedButton_disabled_light cn1 RaisedButton_disabled_light
    Left: native widget. Right: Codename One render.

  • Button_normal_dark -- 91.84% fidelity (SSIM 0.9583) (no change)

    native Button_normal_dark cn1 Button_normal_dark
    Left: native widget. Right: Codename One render.

  • Slider_disabled_dark -- 92.13% fidelity (SSIM 0.9434) (-0.31 vs baseline)

    native Slider_disabled_dark cn1 Slider_disabled_dark
    Left: native widget. Right: Codename One render.

  • Switch_selected_light -- 92.13% fidelity (SSIM 0.9806) (no change)

    native Switch_selected_light cn1 Switch_selected_light
    Left: native widget. Right: Codename One render.

  • CheckBox_normal_light -- 92.16% fidelity (SSIM 0.9938) (no change)

    native CheckBox_normal_light cn1 CheckBox_normal_light
    Left: native widget. Right: Codename One render.

  • RadioButton_normal_light -- 92.16% fidelity (SSIM 0.9938) (no change)

    native RadioButton_normal_light cn1 RadioButton_normal_light
    Left: native widget. Right: Codename One render.

  • FlatButton_normal_dark -- 92.21% fidelity (SSIM 0.9833) (+4.25 vs baseline)

    native FlatButton_normal_dark cn1 FlatButton_normal_dark
    Left: native widget. Right: Codename One render.

  • Button_normal_light -- 92.37% fidelity (SSIM 0.9609) (no change)

    native Button_normal_light cn1 Button_normal_light
    Left: native widget. Right: Codename One render.

  • Slider_normal_dark -- 92.52% fidelity (SSIM 0.9441) (-0.22 vs baseline)

    native Slider_normal_dark cn1 Slider_normal_dark
    Left: native widget. Right: Codename One render.

  • RaisedButton_disabled_dark -- 92.65% fidelity (SSIM 0.9653) (+1.25 vs baseline)

    native RaisedButton_disabled_dark cn1 RaisedButton_disabled_dark
    Left: native widget. Right: Codename One render.

  • CheckBox_disabled_light -- 92.71% fidelity (SSIM 0.9953) (no change)

    native CheckBox_disabled_light cn1 CheckBox_disabled_light
    Left: native widget. Right: Codename One render.

  • RadioButton_disabled_light -- 92.71% fidelity (SSIM 0.9953) (no change)

    native RadioButton_disabled_light cn1 RadioButton_disabled_light
    Left: native widget. Right: Codename One render.

  • Button_pressed_light -- 92.88% fidelity (SSIM 0.9617) (no change)

    native Button_pressed_light cn1 Button_pressed_light
    Left: native widget. Right: Codename One render.

  • FlatButton_pressed_dark -- 92.90% fidelity (SSIM 0.9849) (+2.31 vs baseline)

    native FlatButton_pressed_dark cn1 FlatButton_pressed_dark
    Left: native widget. Right: Codename One render.

  • TabsGeom_normal_dark -- 93.02% fidelity (SSIM 0.8921) (+0.01 vs baseline)

    native TabsGeom_normal_dark cn1 TabsGeom_normal_dark
    Left: native widget. Right: Codename One render.

  • TabsGeom_normal_light -- 93.02% fidelity (SSIM 0.8861) (no change)

    native TabsGeom_normal_light cn1 TabsGeom_normal_light
    Left: native widget. Right: Codename One render.

  • FlatButton_pressed_light -- 93.20% fidelity (SSIM 0.9819) (+4.33 vs baseline)

    native FlatButton_pressed_light cn1 FlatButton_pressed_light
    Left: native widget. Right: Codename One render.

  • Button_disabled_dark -- 93.52% fidelity (SSIM 0.9618) (no change)

    native Button_disabled_dark cn1 Button_disabled_dark
    Left: native widget. Right: Codename One render.

  • Slider_disabled_light -- 93.96% fidelity (SSIM 0.9625) (-0.05 vs baseline)

    native Slider_disabled_light cn1 Slider_disabled_light
    Left: native widget. Right: Codename One render.

  • FlatButton_normal_light -- 94.18% fidelity (SSIM 0.9825) (+1.32 vs baseline)

    native FlatButton_normal_light cn1 FlatButton_normal_light
    Left: native widget. Right: Codename One render.

  • Button_disabled_light -- 94.35% fidelity (SSIM 0.9636) (no change)

    native Button_disabled_light cn1 Button_disabled_light
    Left: native widget. Right: Codename One render.

  • RaisedButton_pressed_dark -- 94.56% fidelity (SSIM 0.9653) (+1.46 vs baseline)

    native RaisedButton_pressed_dark cn1 RaisedButton_pressed_dark
    Left: native widget. Right: Codename One render.

  • RaisedButton_normal_dark -- 94.57% fidelity (SSIM 0.9659) (+1.69 vs baseline)

    native RaisedButton_normal_dark cn1 RaisedButton_normal_dark
    Left: native widget. Right: Codename One render.

  • RaisedButton_pressed_light -- 94.80% fidelity (SSIM 0.9665) (+2.04 vs baseline)

    native RaisedButton_pressed_light cn1 RaisedButton_pressed_light
    Left: native widget. Right: Codename One render.

  • RadioButton_selected_light -- 94.84% fidelity (SSIM 0.9916) (no change)

    native RadioButton_selected_light cn1 RadioButton_selected_light
    Left: native widget. Right: Codename One render.

  • RaisedButton_normal_light -- 95.01% fidelity (SSIM 0.9673) (+2.40 vs baseline)

    native RaisedButton_normal_light cn1 RaisedButton_normal_light
    Left: native widget. Right: Codename One render.

  • Slider_normal_light -- 95.09% fidelity (SSIM 0.9588) (-0.04 vs baseline)

    native Slider_normal_light cn1 Slider_normal_light
    Left: native widget. Right: Codename One render.

  • Switch_normal_light -- 95.51% fidelity (SSIM 0.9863) (no change)

    native Switch_normal_light cn1 Switch_normal_light
    Left: native widget. Right: Codename One render.

  • CheckBox_disabled_dark -- 95.76% fidelity (SSIM 0.9928) (no change)

    native CheckBox_disabled_dark cn1 CheckBox_disabled_dark
    Left: native widget. Right: Codename One render.

  • RadioButton_disabled_dark -- 95.76% fidelity (SSIM 0.9928) (no change)

    native RadioButton_disabled_dark cn1 RadioButton_disabled_dark
    Left: native widget. Right: Codename One render.

  • CheckBox_selected_light -- 95.80% fidelity (SSIM 0.9938) (no change)

    native CheckBox_selected_light cn1 CheckBox_selected_light
    Left: native widget. Right: Codename One render.

  • Switch_selected_dark -- 95.90% fidelity (SSIM 0.9850) (no change)

    native Switch_selected_dark cn1 Switch_selected_dark
    Left: native widget. Right: Codename One render.

  • Switch_disabled_light -- 96.35% fidelity (SSIM 0.9896) (+0.04 vs baseline)

    native Switch_disabled_light cn1 Switch_disabled_light
    Left: native widget. Right: Codename One render.

  • CheckBox_normal_dark -- 96.52% fidelity (SSIM 0.9927) (no change)

    native CheckBox_normal_dark cn1 CheckBox_normal_dark
    Left: native widget. Right: Codename One render.

  • RadioButton_normal_dark -- 96.52% fidelity (SSIM 0.9927) (no change)

    native RadioButton_normal_dark cn1 RadioButton_normal_dark
    Left: native widget. Right: Codename One render.

  • GlassPanelPhoto_normal_light -- 96.72% fidelity (SSIM 0.9804) (+0.64 vs baseline)

    native GlassPanelPhoto_normal_light cn1 GlassPanelPhoto_normal_light
    Left: native widget. Right: Codename One render.

  • GlassPanelPhoto_normal_dark -- 96.76% fidelity (SSIM 0.9832) (+0.59 vs baseline)

    native GlassPanelPhoto_normal_dark cn1 GlassPanelPhoto_normal_dark
    Left: native widget. Right: Codename One render.

  • TabOne_normal_dark -- 96.77% fidelity (SSIM 0.9526) (+0.73 vs baseline)

    native TabOne_normal_dark cn1 TabOne_normal_dark
    Left: native widget. Right: Codename One render.

  • Switch_normal_dark -- 96.80% fidelity (SSIM 0.9855) (no change)

    native Switch_normal_dark cn1 Switch_normal_dark
    Left: native widget. Right: Codename One render.

  • RadioButton_selected_dark -- 96.81% fidelity (SSIM 0.9908) (no change)

    native RadioButton_selected_dark cn1 RadioButton_selected_dark
    Left: native widget. Right: Codename One render.

  • TextField_normal_dark -- 96.88% fidelity (SSIM 0.9492) (-0.20 vs baseline)

    native TextField_normal_dark cn1 TextField_normal_dark
    Left: native widget. Right: Codename One render.

  • TextField_disabled_dark -- 97.19% fidelity (SSIM 0.9526) (-0.15 vs baseline)

    native TextField_disabled_dark cn1 TextField_disabled_dark
    Left: native widget. Right: Codename One render.

  • ProgressBar_normal_dark -- 97.47% fidelity (SSIM 0.9973) (+3.03 vs baseline)

    native ProgressBar_normal_dark cn1 ProgressBar_normal_dark
    Left: native widget. Right: Codename One render.

  • TabOne_normal_light -- 97.51% fidelity (SSIM 0.9608) (+1.89 vs baseline)

    native TabOne_normal_light cn1 TabOne_normal_light
    Left: native widget. Right: Codename One render.

  • ProgressBar_normal_light -- 97.60% fidelity (SSIM 0.9989) (+2.19 vs baseline)

    native ProgressBar_normal_light cn1 ProgressBar_normal_light
    Left: native widget. Right: Codename One render.

  • CheckBox_selected_dark -- 97.79% fidelity (SSIM 0.9932) (no change)

    native CheckBox_selected_dark cn1 CheckBox_selected_dark
    Left: native widget. Right: Codename One render.

  • Dialog_normal_dark -- 97.86% fidelity (SSIM 0.9614) (+0.89 vs baseline)

    native Dialog_normal_dark cn1 Dialog_normal_dark
    Left: native widget. Right: Codename One render.

  • Dialog_normal_light -- 97.95% fidelity (SSIM 0.9634) (+0.86 vs baseline)

    native Dialog_normal_light cn1 Dialog_normal_light
    Left: native widget. Right: Codename One render.

  • Switch_disabled_dark -- 98.01% fidelity (SSIM 0.9869) (+2.48 vs baseline)

    native Switch_disabled_dark cn1 Switch_disabled_dark
    Left: native widget. Right: Codename One render.

  • GlassIcon_normal_dark -- 98.59% fidelity (SSIM 0.9841) (no change)

    native GlassIcon_normal_dark cn1 GlassIcon_normal_dark
    Left: native widget. Right: Codename One render.

  • GlassText_normal_dark -- 98.64% fidelity (SSIM 0.9848) (+0.05 vs baseline)

    native GlassText_normal_dark cn1 GlassText_normal_dark
    Left: native widget. Right: Codename One render.

  • GlassIcon_normal_light -- 98.67% fidelity (SSIM 0.9860) (no change)

    native GlassIcon_normal_light cn1 GlassIcon_normal_light
    Left: native widget. Right: Codename One render.

  • GlassText_normal_light -- 98.74% fidelity (SSIM 0.9874) (+0.05 vs baseline)

    native GlassText_normal_light cn1 GlassText_normal_light
    Left: native widget. Right: Codename One render.

  • GlassPanelGrad_normal_light -- 98.91% fidelity (SSIM 0.9935) (+0.67 vs baseline)

    native GlassPanelGrad_normal_light cn1 GlassPanelGrad_normal_light
    Left: native widget. Right: Codename One render.

  • GlassPanelGrad_normal_dark -- 98.98% fidelity (SSIM 0.9928) (+0.55 vs baseline)

    native GlassPanelGrad_normal_dark cn1 GlassPanelGrad_normal_dark
    Left: native widget. Right: Codename One render.

  • GlassPanelGrey_normal_dark -- 98.99% fidelity (SSIM 0.9917) (+0.57 vs baseline)

    native GlassPanelGrey_normal_dark cn1 GlassPanelGrey_normal_dark
    Left: native widget. Right: Codename One render.

  • GlassPanelGrey_normal_light -- 99.05% fidelity (SSIM 0.9936) (+0.67 vs baseline)

    native GlassPanelGrey_normal_light cn1 GlassPanelGrey_normal_light
    Left: native widget. Right: Codename One render.

  • GlassPanelRed_normal_dark -- 99.09% fidelity (SSIM 0.9926) (+0.52 vs baseline)

    native GlassPanelRed_normal_dark cn1 GlassPanelRed_normal_dark
    Left: native widget. Right: Codename One render.

  • GlassPanelRed_normal_light -- 99.10% fidelity (SSIM 0.9939) (+0.67 vs baseline)

    native GlassPanelRed_normal_light cn1 GlassPanelRed_normal_light
    Left: native widget. Right: Codename One render.

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Compared 163 screenshots: 163 matched.
✅ Native Apple TV (tvOS, Metal) screenshot tests passed.

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Compared 236 screenshots: 236 matched.
✅ Native Apple Watch (watchOS, Core Graphics) screenshot tests passed.

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Comment thread scripts/flutter-bench/run_bench.py Outdated
Comment thread maven/dart-runtime/src/main/java/dart/async/Future.java Outdated
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Comment thread maven/dart-runtime/src/main/java/dart/core/RegExp.java Outdated
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/widgets/Overlay.java
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Comment thread maven/codenameone-maven-plugin/src/main/java/com/codename1/maven/TranscodeFlutterMojo.java Outdated
Comment thread maven/dart-transpiler/src/main/java/com/codename1/dart/transpiler/api/DartTranspiler.java Outdated
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/widgets/Image.java
Comment thread maven/dart-runtime/src/main/java/dart/async/Future.java Outdated
Comment thread maven/dart-runtime/src/main/java/dart/core/DartUri.java Outdated
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/Element.java
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/animation/AnimationController.java
Comment thread maven/dart-runtime/src/main/java/dart/core/DateTime.java Outdated
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/Key.java Outdated
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/Locale.java
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Comment thread maven/dart-runtime/src/main/java/dart/async/Future.java Outdated
Comment thread maven/dart-runtime/src/main/java/dart/core/DString.java
Comment thread maven/dart-runtime/src/main/java/dart/runtime/DartRuntime.java Outdated
Comment thread maven/dart-runtime/src/main/java/dart/runtime/DartRuntime.java
Comment thread maven/dart-transpiler/src/main/java/com/codename1/dart/transpiler/codegen/JavaEmitter.java
Comment thread maven/dart-transpiler/src/main/java/com/codename1/dart/transpiler/codegen/JavaEmitter.java
Comment thread maven/dart-transpiler/src/main/java/com/codename1/dart/transpiler/codegen/JavaEmitter.java Outdated
Comment thread maven/dart-transpiler/src/main/java/com/codename1/dart/transpiler/api/DartTranspiler.java
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/animation/Animation.java Outdated
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Compared 179 screenshots: 179 matched.
✅ Native Mac screenshot tests passed.

Benchmark Results

  • VM Translation Time: 0 seconds
  • Compilation Time: 355 seconds

Detailed Performance Metrics

Metric Duration
SIMD kernel backend SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300) java 61ms / native 3ms = 20.3x speedup
SIMD float-mul (64K x300) java 55ms / native 3ms = 18.3x 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 45.000 ms
Base64 CN1 decode 53.000 ms
Image encode benchmark iterations 100
Image createMask (SIMD off) 15.000 ms
Image createMask (SIMD on) 4.000 ms
Image createMask ratio (SIMD on/off) 0.267x (73.3% faster)
Image applyMask (SIMD off) 52.000 ms
Image applyMask (SIMD on) 45.000 ms
Image applyMask ratio (SIMD on/off) 0.865x (13.5% faster)
Image modifyAlpha (SIMD off) 52.000 ms
Image modifyAlpha (SIMD on) 55.000 ms
Image modifyAlpha ratio (SIMD on/off) 1.058x (5.8% slower)
Image modifyAlpha removeColor (SIMD off) 56.000 ms
Image modifyAlpha removeColor (SIMD on) 63.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off) 1.125x (12.5% slower)

ParparVM vs HotSpot (JDK 25): macOS arm64

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

1 performance regression:

  • translator (self) on all 3 CPUs: RAM 0.76x against a 0.57x baseline (+34.6%, tolerance 15%)

1 improvement past the baseline, which fails until rebaselined:

  • hello (HelloCodenameOne) on all 3 CPUs: RAM 0.84x against a 1.34x baseline (-37.3%, 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 15% (time) / 15% (RAM) away from its baseline in vm/selfhost/perf-baseline/ fails: above it is a regression, below it an improvement that has to be rebaselined (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 0.94x (base 0.96x, -1.6%) 0.84x (base 1.34x, -37.3%) IMPROVED: rebaseline (RAM -37.3%)
translator (self) 3 0.65x (base 0.62x, +4.3%) 0.76x (base 0.57x, +34.6%) REGRESSION (RAM +34.6%)
intArithmetic 3 1.06x (base 1.03x, +2.8%) 0.12x (base 0.12x, +0.7%) ok
longArithmetic 3 1.07x (base 1.03x, +3.8%) 0.12x (base 0.07x, +66.5%) ok
mathTranscendental 3 0.97x (base 1.01x, -4.0%) 0.12x (base 0.12x, +0.3%) ok
arraySequential 3 0.47x (base 0.42x, +12.2%) 0.53x (base 0.53x, +0.0%) ok
arrayRandom 3 0.96x (base 0.99x, -2.8%) 0.32x (base 0.32x, +0.2%) ok
objectAllocation 3 0.96x (base 1.11x, -13.4%) 0.62x (base 0.81x, -23.2%) ok
valueEscape 3 0.50x (base 0.51x, -0.5%) 0.09x (base 0.09x, +5.6%) ok
hashMapChurn 3 1.02x (base 1.18x, -13.0%) 0.07x (base 0.07x, +8.2%) ok
stringBuilding 3 0.89x (base 0.84x, +5.3%) 0.46x (base 0.46x, -1.7%) ok
recursion 3 1.54x (base 1.53x, +0.7%) 0.12x (base 0.12x, +0.5%) ok
quicksort 3 1.00x (base 1.01x, -1.4%) 0.11x (base 0.11x, -0.3%) ok

A change that moves performance ON PURPOSE records the new baseline in vm/selfhost/perf-baseline/pr/5883.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 5883 --reason "<why these benchmarks moved>" perf-results.json

Result: performance regression

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Comment thread maven/dart-runtime/src/main/java/dart/core/DartIdentitySet.java Outdated
Comment thread maven/dart-runtime/src/main/java/dart/async/Stream.java
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/navigation/Navigator.java Outdated
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/material/TextFormField.java
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/material/TextFormField.java
@shai-almog @claude
Fix review findings: identity-set iterator checks, onCancel when a st…
ca289c9 
…ream finishes, dialog replacement over the base page, TextFormField formatters and reset

- dart-runtime: Set.identity()'s iterator is checked like every DartSet's
  (shared checkedIterator), so removing its last element mid-loop throws
  ConcurrentModificationError.
- dart-runtime: a stream finished by its producer (close/endOfStream) runs
  its cancel hook once the last listener has its done event -- at once,
  or when a paused listener drains or discards it -- so
  StreamController.onCancel and an event channel's StreamHandler.onCancel
  run; never-listened streams run nothing.
- flutter-runtime: pushReplacementNamed with a dialog over the base page
  replaces the dialog and leaves the base beneath (canPop stays true).
- flutter-runtime: TextFormField forwards inputFormatters and
  TextFieldRenderElement applies them, in order, to every user edit before
  the field, controller and onChanged see it; reset restores an external
  controller's text from creation instead of blanking it.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Comment thread .github/workflows/developer-guide-docs.yml
Comment thread maven/build-engine/src/main/java/com/codename1/maven/FlutterProjectImporter.java
Comment thread maven/build-engine/src/main/java/com/codename1/builders/NativeThemes.java
Comment thread maven/codenameone-maven-plugin/src/main/java/com/codename1/maven/FlutterPomUpdater.java Outdated
@shai-almog @claude
Fix review findings: install the Flutter runtime for guide demos, lib…
3feb61e 
…/asset collisions on import, theme pruning scans library jars, top-level runtime dependency check

- developer-guide-docs.yml installs dart-runtime and flutter-runtime
  (the job is on JDK 17), which docs/demos/common now depends on.
- cn1:import-flutter-project never lets an asset overwrite a file copied
  from lib/ at the same flattened path; the source is kept on every import
  and the clash is reported (Result.assetCollisions, warned by the mojo).
- Native-theme pruning (Android, iOS, native macOS) also scans the
  application's library jars, listed right after the app is unzipped and
  before the port's archives land beside them, so a theme a library
  selects or opens is kept.
- FlutterPomUpdater counts the runtime as wired only when it is in the
  project's top-level <dependencies>; a dependencyManagement entry puts
  nothing on the classpath.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/navigation/Navigator.java Outdated
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/navigation/Navigator.java Outdated
Comment thread maven/dart-runtime/src/main/java/dart/core/Duration.java Outdated
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/navigation/RestorableRouteFuture.java Outdated
@shai-almog @claude
Fix review findings: route on the stack before its page builds, pop r…
1a066f9 
…esult delivered after the way back is committed, Duration minimum, failed restorable presentations

- Navigator.push registers the route before mounting its page (rolled
  back if mounting fails): the first build is synchronous, and an
  in-canvas AppBar's automaticallyImplyLeading asked canPop() while the
  first pushed route was not yet on the stack, so it drew no back button.
- Navigator.pop completes the popped route's future last, after
  returningTo and the return transition are set up, so a callback that
  pushes at once starts from the page beneath, not the page being popped.
- Duration.toString splits before taking magnitudes: the minimum duration
  printed negative components (Dart: -2562047788:00:54.775808).
- RestorableRouteFuture.present stays inactive when nothing was pushed, so
  isPresent() cannot stick at true with no route to complete it.
- RasterDisplay (test support) installs a display lock, so Form.show runs
  under it.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Comment thread maven/dart-transpiler/src/main/java/com/codename1/dart/transpiler/codegen/JavaEmitter.java
Comment thread CodenameOne/src/com/codename1/ui/animations/CommonTransitions.java
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/State.java
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/widgets/FormFieldState.java
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/widgets/PageViewRenderElement.java Outdated
shai-almog and others added 2 commits October 16, 2026 12:00
@shai-almog @claude
Fix review findings: await on a nullable Future, reused manual transi…
7f3c569 
…tion Motion, setState after dispose, disabled form fields, viewportFraction above one

- dart-transpiler: `await f` on a Future<T>? lowers through awaitAny, so a
  null future awaits to null as in Dart instead of throwing TypeError.
- core: a Motion given to a transition with setMotion() is reset for each
  run (new package-private Motion.resetForReuse); copies share it, and the
  first run left it finished so every later run completed at once.
- flutter-runtime: setState on a disposed State reports a FlutterError and
  does not run the closure.
- flutter-runtime: a disabled FormField/TextFormField is not validated
  automatically (an explicit validate() still runs).
- flutter-runtime: any positive viewportFraction is kept; above one a page
  is wider than the viewport and rests centred, offset by half the
  overflow, as Flutter's initial page offset does.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
@shai-almog
Merge remote-tracking branch 'origin/master' into flutter-dart-transp…
527252f 
…ilation
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Comment thread maven/dart-runtime/src/main/java/dart/core/DartUri.java Outdated
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/material/TextFieldRenderElement.java Outdated
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/animation/AnimationController.java Outdated
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/navigation/Navigator.java Outdated
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/EdgeInsets.java
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/widgets/ClipRRectRenderElement.java Outdated
@shai-almog @claude
Fix copyright header and review findings: empty query keys, native ma…
828dd15 
…xLength cap, counted headless repeats, popUntil over dialogs, directional insets and radii

- CommonTransitionsTest gets the Codename One header (touched last round,
  so the diff-scoped header gate checked it).
- dart-runtime: Uri.queryParameters ignores a component with an empty key
  ("?=admin"), as Dart's splitQueryString does.
- flutter-runtime: no UTF-16 native cap on a TextField with maxLength; it
  cut a valid grapheme with many combining marks short, and userEdited
  already enforces the grapheme-aware limit after the formatters.
- flutter-runtime: repeat(count: n) completes headless, running its finite
  legs synchronously like any headless run.
- flutter-runtime: popUntil evaluates and pops an open dialog (as an
  unnamed DialogRoute) before the page beneath it.
- flutter-runtime: adding two EdgeInsetsDirectional stays directional;
  BorderRadiusDirectional.resolve/BorderRadius.of, used by ClipRRect (with
  the ambient direction) and the uniform-radius readers (button shapes,
  box decorations, OutlineInputBorder), which treated a directional radius
  as none.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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💡 Codex Review

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Reviewed commit: 828dd15c99

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Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/FlutterUI.java Outdated
Comment thread maven/build-engine/src/main/java/com/codename1/builders/NativeThemes.java
Comment thread CodenameOne/src/com/codename1/l10n/SimpleDateFormat.java
Comment thread Ports/MacPort/nativeSources/METALView.m
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/material/MaterialAppElement.java
Comment thread maven/dart-runtime/src/main/java/dart/core/DartMap.java Outdated
@shai-almog @claude
Fix review findings: start-up GC off the EDT, overlay themes in app r…
1ee07ef 
…esources, Metal frame sequence on texture rebuild, nested app themes, integral map keys

- flutter-runtime: runApp's two start-up collections are requested on a
  background thread; on the JVM and ART an explicit GC blocks its caller,
  and on the EDT it stalled every app after its first frame.
- build-engine: native-theme pruning also scans the application's own .res
  files (listed at app unzip, before any port theme lands): an
  @OverlayThemes property names a theme only there.
- MacPort METALView: replacing or dropping screenTexture bumps the frame
  sequence, so a command buffer from before a resize cannot mark the new
  texture volatile while it is still being initialised.
- flutter-runtime: a nested MaterialApp hands the global theme back to the
  enclosing app (and refreshes its form) when it unmounts.
- dart-runtime: Integer, Short and Byte map/set keys are the same Dart int
  as the Long transpiled code uses (every integral twin is probed).
- SimpleDateFormat.sameZone keeps its comparison, with the reason in a
  comment: no Codename One API builds a zone whose rules differ from its ID's.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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💡 Codex Review

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Reviewed commit: 1ee07ef800

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Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/material/Dialogs.java Outdated
Comment thread maven/dart-runtime/src/main/java/dart/async/Stream.java
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/widgets/Image.java Outdated
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/RestorableTextEditingController.java
@shai-almog @claude
Fix review findings: dispose a dialog before its result, cancel upstr…
1a1d646 
…eam after synchronous derived-stream cancellation, image scale in the source key, restorable controller disposal

- flutter-runtime: popping a displayed dialog disposes the native dialog
  first and completes its future after, so an `await showDialog`
  continuation that pops the page beneath no longer runs while the dialog
  is current (whose disposal then resurrected the popped route).
- dart-runtime: Stream.map/where cancel the upstream subscription right
  after listen() returns when the derived stream has already lost its
  listeners (a synchronous emit into a throwing transform with
  cancelOnError), so the source gets its cancel hook.
- flutter-runtime: a NetworkImage/MemoryImage scale is part of the image
  source key; a scale-only rebuild kept the old intrinsic size.
- flutter-runtime: RestorableTextEditingController.dispose disposes the
  controller it owns.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Reviewed commit: 1a1d64671f

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Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/navigation/Navigator.java Outdated
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/navigation/Navigator.java
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/FlutterChannelRegistry.java Outdated
Comment thread maven/flutter-runtime/src/main/java/com/codename1/flutter/FlutterChannelRegistry.java
shai-almog and others added 4 commits October 16, 2026 14:08
@shai-almog @claude
Fix CI test display and review findings: replacement before the remov…
b4689f9 
…ed route's result, rootNavigator, two-way channel handlers, byte[] as Uint8List

- RasterDisplay (test support) installs Display's Graphics wrapper as
  Display.init does: Dialog.showPacked flushes the EDT and paints, and CI's
  test order reached that paint with no graphics (NPE in dart-flutter-tests).
- Navigator.pushReplacementNamed completes the removed route's future
  only after the replacement is pushed (pop split into popPage + complete),
  so a callback that pushes at once lands above the replacement.
- Navigator.of(context, rootNavigator: true) binds to the root app's
  navigator position, so named routes resolve against the root table.
- FlutterChannelRegistry keeps the Dart side's and the platform side's
  method handlers apart; a channel carrying calls both ways no longer has
  one registration replace the other.
- toDart converts byte[] (also nested in lists and maps) to a Uint8List
  (new Uint8List.fromBytes), as Flutter's standard codec does.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
@shai-almog
Merge remote-tracking branch 'origin/master' into flutter-dart-transp…
9bb8f7b 
…ilation
@shai-almog
Merge remote-tracking branch 'origin/master' into flutter-dart-transp…
afbe4ca 
…ilation

# Conflicts:
#	maven/core-unittests/src/test/java/com/codename1/ui/ComboBoxPopupTestSupport.java
@shai-almog @claude
Drop perf rebaselines #5984 also moved (linux-arm64 hello, windows-x6…
721fd79 
…4 translator)

#5984 (merged) rebaselines the same two rows from the same values, which the
baseline checker rejects. Its rows stay; this PR's getCallers memory
improvement on those two runners is re-measured on top of both from the
next CI run.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
@shai-almog
shai-almog merged commit f632ab1 into master Oct 16, 2026
@shai-almog
shai-almog deleted the flutter-dart-transpilation branch October 16, 2026 13:06
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