Qualification: ColorPickerShowCase contains at least 20 ColorPicker controls and at least 3 GradientColorPicker controls; the default Click trigger is paid for each materialized picker and is used on every anchor pointer press.
Source model: RoutedEvent.AddClassHandler subscribes once for the target type (.referenceprojects/Avalonia/src/Avalonia.Base/Interactivity/RoutedEvent.cs:121-135), while Interactive.AddHandler creates per-control event subscription storage (.referenceprojects/Avalonia/src/Avalonia.Base/Interactivity/Interactive.cs:30-41,179-190).
Measurement: Release net10.0, --suite colorpicker --count 300, 3-run median. ColorPicker.GalleryShape ms/item 12.548 -> 11.593 (+7.61%), KB/item 3826.1 -> 3811.7 (+0.38%); suite sum ms/item 19.353 -> 18.254 (+5.68%), KB/item 5770.5 -> 5753.2 (+0.30%).
Verification: dotnet build -c Release -f net10.0 tools/performances/AtomUI.Performance/AtomUI.Performance.csproj; dotnet run -c Release -f net10.0 --no-build --project tools/performances/AtomUI.Performance/AtomUI.Performance.csproj -- --verify-colorpicker-states; git diff --check.
WindowTitleBar is used by the main Window, Dialog, and ImagePreviewer paths; a normal Gallery session keeps one workspace title bar resident and materializes transient dialog/image title bars when those flows open. CaptionButtonGroup is created by each title bar, with visibility state recalculated during window materialization and maximize/fullscreen/pin state changes.
Replace caption-button MultiBinding converters with direct effective visibility properties, remove extra arrange invalidation registration, clear template handlers on detach/re-template, and avoid duplicate Windows caption corner radius writes.
Measured with three alternating count=160 windowtitlebar runs: CaptionButtonGroup Windows states improved 6.4%-7.0% ms/item and 3.4%-4.3% KB/item, with Visual/root unchanged.
Verification: dotnet build tools/performances/AtomUI.Performance/AtomUI.Performance.csproj -c Debug --framework net10.0; dotnet run --project tools/performances/AtomUI.Performance/AtomUI.Performance.csproj -c Debug --framework net10.0 --no-build -- --verify-windowtitlebar-states.
ToggleSwitchShowCase materializes 13 Switch controls in the measured Gallery shape. Navigation/materialization runs when the user opens the Switch showcase; loading animation/render paths can run repeatedly while a Switch is loading.
Avoid duplicate transition lifecycle overrides, keep the loading cursor override scoped to loading state, cache the loading indicator pen, and skip wave playback when wave effects are disabled.
Verification: dotnet build tools/performances/AtomUI.Performance/AtomUI.Performance.csproj -c Debug --framework net10.0; dotnet run --project tools/performances/AtomUI.Performance/AtomUI.Performance.csproj -c Debug --framework net10.0 --no-build -- --verify-switch-states.
Adds the performance harness, state-verification suites, gallery
showcases and reference docs accumulated for the 6.0 release, plus
control-level fixes:
- tools/performances/AtomUI.Performance + AtomUI.GalleryPerformance
scaffolding with per-control scenarios and verification suites
- docs/performances/** baselines and plans
- controlgallery/** showcase data refreshes (icon gallery, range time
pickers, multi-select cascader strategies, etc.)
- ListBox: re-apply filter on OnLoaded when FilterValue is preset
- SelectCandidateList: visible-item selection mapping under filter
- RangeDatePicker: floating popup arrow even with IsShowTime=true
chinboy