play:data2viz

package com.sogeti.quantumleap.uielements import android.content.Context import android.view.ViewGroup import androidx.compose.runtime.Composable import androidx.compose.ui.Modifier import androidx.compose.ui.viewinterop.AndroidView import io.data2viz.charts.chart.Chart import io.data2viz.charts.chart.chart import io.data2viz.charts.chart.discrete import io.data2viz.charts.chart.mark.bar import io.data2viz.charts.chart.quantitative import io.data2viz.geom.Size import io.data2viz.random.RandomDistribution import io.data2viz.viz.VizContainerView import kotlin.random.Random // Data class to represent population counts data class PopCount(val year: Int, val population: Double) // Composable function to display the chart @Composable fun Data2VizChart( modifier: Modifier = Modifier, maxYValue: Double = 8000.0, // Default maximum Y value barCount: Int = 30, // Default number of bars data: List<PopCount> = generateRandomData(barCount, maxYValue) // Generate random data ) { AndroidView( modifier = modifier, factory = { context -> CanadaChart(context).apply { layoutParams = ViewGroup.LayoutParams( ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT ) } }, update = { view -> view.updateChartData(data) } ) } // Utility function to generate random data fun generateRandomData(barCount: Int, maxYValue: Double): List<PopCount> { val generator = RandomDistribution.uniform(max = maxYValue) return List(barCount) { index -> PopCount(index, generator().toDouble()) } } class CanadaChart(context: Context) : VizContainerView(context) { // Current data of the chart private var currentData: List<PopCount> = listOf() // Initially create the chart with the current data and a size of 0.0 by 0.0 var chart: Chart<PopCount> = createChart(currentData, Size(0.0, 0.0)) // This method will create a chart with given data and size private fun createChart(data: List<PopCount>, size: Size): Chart<PopCount> { return chart(data) { this.size = size title = "Population of Canada 1851–2001 (Statistics Canada)" val year = discrete({ domain.year }) val population = quantitative({ domain.population }) { name = "Population (millions)" } bar(year, population) } } // Call this method to update the chart data fun updateChartData(newData: List<PopCount>) { currentData = newData chart = createChart(newData, Size(width.toDouble(), height.toDouble())) invalidate() } override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) { super.onSizeChanged(w, h, oldw, oldh) // Update the chart with the new size chart = createChart(currentData, Size(w.toDouble(), h.toDouble())) invalidate() } }