0e3360e4a0
Profiling (Pixel 7 + SM-T819) showed the chart CPU-bound in Skia analytic-AA path fill plus a full-buffer copy on every frame. - LineSignalRenderer: draw the signal polyline with anti-aliasing off, via a cached common Paint + drawIntoCanvas (KMP-safe, no nativeCanvas). Flips Skia from CPU coverage-mask raster to GPU tessellation; configured strokeWidth still honored. Removes the old Stroke cache. - TieredBuffer/CircularBuffer: replace the full ~60k-sample copy+scan in the draw hot path with an O(log n) bisect window read (copyWindow). Output byte-identical (equivalence tests incl. ring-wrap + edges). - RealtimeChart: split the single Canvas into a cold layer (Y-axis line, grid, labels) and a hot layer (signal, X-axis, crosshair) so per-frame TextMeasurer layout stops running every frame. Y range stabilized to the tick grid and shared by both layers (signal never clips). - minSdk 26 -> 24. Renderer unit test moved commonTest -> iosTest (Compose Paint delegates to a non-mockable android.graphics.Paint stub on the JVM host; Skiko backs it for real). Verified on SM-T819 (release): frame time 150ms -> 48ms, ~10 -> ~31 fps at full 8x200 Hz load. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
99 lines
2.6 KiB
Kotlin
99 lines
2.6 KiB
Kotlin
import org.jetbrains.kotlin.gradle.plugin.mpp.apple.XCFramework
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plugins {
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alias(libs.plugins.kotlin.multiplatform)
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alias(libs.plugins.android.library)
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alias(libs.plugins.compose.multiplatform)
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alias(libs.plugins.compose.compiler)
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`maven-publish`
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}
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group = "dev.dtrentin"
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version = "0.5.0-SNAPSHOT"
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composeCompiler {
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reportsDestination = layout.buildDirectory.dir("compose_compiler_reports")
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metricsDestination = layout.buildDirectory.dir("compose_compiler_metrics")
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}
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kotlin {
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applyDefaultHierarchyTemplate()
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explicitApi()
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androidTarget {
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compilations.all {
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compileTaskProvider.configure {
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compilerOptions {
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jvmTarget.set(org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_17)
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}
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}
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}
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publishLibraryVariants("release")
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}
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val xcf = XCFramework("ChartRealtime")
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listOf(
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iosArm64(),
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iosSimulatorArm64()
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).forEach { target ->
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target.binaries.framework {
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baseName = "ChartRealtime"
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xcf.add(this)
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}
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}
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sourceSets {
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commonMain.dependencies {
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implementation(compose.runtime)
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implementation(compose.ui)
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implementation(compose.foundation)
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implementation(compose.material3)
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implementation(libs.coroutines.core)
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}
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androidMain.dependencies {
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implementation(libs.androidx.core)
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}
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commonTest.dependencies {
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implementation(libs.kotlin.test)
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}
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}
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}
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android {
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namespace = "dev.dtrentin.chart"
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compileSdk = 35
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defaultConfig {
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minSdk = 24
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}
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compileOptions {
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sourceCompatibility = JavaVersion.VERSION_17
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targetCompatibility = JavaVersion.VERSION_17
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}
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}
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publishing {
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// KMP plugin auto-creates per-target publications.
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// Run: ./gradlew publishToMavenLocal
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publications.withType<MavenPublication>().configureEach {
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pom {
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name.set("chart-realtime")
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description.set("KMP real-time line chart for high-frequency sensor data (200Hz+ multi-signal, bounded memory).")
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url.set("https://github.com/davide-trentin/KMPCharts")
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licenses {
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license {
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name.set("MIT License")
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url.set("https://opensource.org/licenses/MIT")
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distribution.set("repo")
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}
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}
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developers {
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developer {
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id.set("dtrentin")
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name.set("Davide Trentin")
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}
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}
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}
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}
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}
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