Kotlin conversion LineChart

Author: hannesa2

MPChartLib/src/main/java/com/github/mikephil/charting/charts/LineChart.java

@@ -0,0 +1,54 @@
+package com.github.mikephil.charting.charts
+
+import android.content.Context
+import android.util.AttributeSet
+import com.github.mikephil.charting.data.LineData
+import com.github.mikephil.charting.interfaces.dataprovider.LineDataProvider
+import com.github.mikephil.charting.renderer.LineChartRenderer
+import java.util.Locale
+
+class LineChart : BarLineChartBase<LineData?>, LineDataProvider {
+
+    constructor(context: Context?) : super(context)
+    constructor(context: Context?, attrs: AttributeSet?) : super(context, attrs)
+    constructor(context: Context?, attrs: AttributeSet?, defStyle: Int) : super(context, attrs, defStyle)
+
+    override fun init() {
+        super.init()
+        mRenderer = LineChartRenderer(this, mAnimator, mViewPortHandler)
+    }
+
+    override fun getLineData(): LineData {
+        return mData!!
+    }
+
+    public override fun onDetachedFromWindow() {
+        // releases the bitmap in the renderer to avoid oom error
+        if (mRenderer != null && mRenderer is LineChartRenderer) {
+            (mRenderer as LineChartRenderer).releaseBitmap()
+        }
+        super.onDetachedFromWindow()
+    }
+
+    override fun getAccessibilityDescription(): String {
+        val lineData = lineData
+        val numberOfPoints = lineData.entryCount
+
+        // Min and max values...
+        val yAxisValueFormatter = axisLeft.valueFormatter
+        val minVal = yAxisValueFormatter.getFormattedValue(lineData.yMin, null)
+        val maxVal = yAxisValueFormatter.getFormattedValue(lineData.yMax, null)
+
+        // Data range...
+        val xAxisValueFormatter = xAxis.valueFormatter
+        val minRange = xAxisValueFormatter.getFormattedValue(lineData.xMin, null)
+        val maxRange = xAxisValueFormatter.getFormattedValue(lineData.xMax, null)
+        val entries = if (numberOfPoints == 1) "entry" else "entries"
+        return String.format(
+            Locale.getDefault(), "The line chart has %d %s. " +
+                    "The minimum value is %s and maximum value is %s." +
+                    "Data ranges from %s to %s.",
+            numberOfPoints, entries, minVal, maxVal, minRange, maxRange
+        )
+    }
+}