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Multi-scene Compose app demonstrating chart-realtime v0.5.0 features
end-to-end. Single Activity, sealed Screen enum + mutableStateOf for
nav (no nav library dep).
Scenes:
- LiveSensor — synthetic waveform sandbox with full control panel
(relocated from DemoScreen.kt; behavior unchanged)
- Ecg — single-signal 250Hz ECG with P/QRS/T complex synthesis, dark
theme, UnitAxisFormatter("mV"), MinMaxLttbLodStrategy
- StressTest — 8 signals @ 200Hz (1600 samples/sec total), MinMaxLod
for peak preservation, live push-rate readout
- HistoryScrubber — preloads 300k samples in coroutine, then pauses
production; demonstrates tiered buffer (Tier0 60s full-rate +
Tier1/Tier2 LoD-decimated history) and interaction History mode
- CustomRenderer — ships AreaSignalRenderer + ScatterSignalRenderer
in app/demo/renderers/ to demo SignalRenderer extensibility (~30
LoC each, no library code change)
- Formatters — 4 stacked mini-charts, same data, 4 different
AxisFormatter impls (Time / Decimal / DateTime / Unit("Hz"))
- ThemeGallery — 4 ChartTheme presets side-by-side (Light, Dark,
Cyberpunk, Newspaper)
Material3 NavigationBar + TopAppBar. Unicode emoji as nav icons
(skips material-icons-extended dep). enableEdgeToEdge() with Scaffold
inset handling. Dark mode toggle in TopAppBar actions.
Files:
- app/demo/ShowcaseApp.kt — root composable, Screen enum, nav
- app/demo/{LiveSensor,Ecg,StressTest,HistoryScrubber,
CustomRenderer,FormattersShowcase,ThemeGallery}Screen.kt
- app/demo/renderers/{AreaSignalRenderer,ScatterSignalRenderer}.kt
- app/demo/generators/EcgGenerator.kt
- app/demo/MainActivity.kt — hosts ShowcaseApp + dark-mode state
- app/demo/DemoScreen.kt — deleted (content moved to
LiveSensorScreen.kt)
Preserved (used by LiveSensorScreen):
- ControlPanel.kt, DemoConfig.kt, SignalGenerator.kt,
WaveformType.kt, PushCounter.kt
Build: assembleDebug green, APK 11.1 MB. No new Maven deps. No
library code changes. iosSimulatorArm64Test still 207/207 green.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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|---|---|---|
| .github | ||
| .paul | ||
| app | ||
| chart-realtime | ||
| docs | ||
| gradle | ||
| samples/ios/ChartRealtimeDemo | ||
| .gitignore | ||
| build.gradle.kts | ||
| CHANGELOG.md | ||
| CONTRIBUTING.md | ||
| gradle.properties | ||
| gradlew | ||
| LICENSE | ||
| settings.gradle.kts | ||