Merge pull request #436 from AppDevNext/KotlinCustomView

Kotlin custom view

Author: hannesa2

app/src/main/java/info/appdev/chartexample/custom/MyMarkerView.java

@@ -0,0 +1,36 @@
+package info.appdev.chartexample.custom
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.widget.TextView
+import com.github.mikephil.charting.components.MarkerView
+import com.github.mikephil.charting.data.CandleEntry
+import com.github.mikephil.charting.data.Entry
+import com.github.mikephil.charting.highlight.Highlight
+import com.github.mikephil.charting.utils.MPPointF
+import com.github.mikephil.charting.utils.Utils
+import info.appdev.chartexample.R
+
+/**
+ * Custom implementation of the MarkerView.
+ */
+@SuppressLint("ViewConstructor")
+class MyMarkerView(context: Context?, layoutResource: Int) : MarkerView(context, layoutResource) {
+    private val tvContent: TextView = findViewById(R.id.tvContent)
+
+    // runs every time the MarkerView is redrawn, can be used to update the
+    // content (user-interface)
+    override fun refreshContent(e: Entry, highlight: Highlight?) {
+        if (e is CandleEntry) {
+            tvContent.text = Utils.formatNumber(e.high, 0, true)
+        } else {
+            tvContent.text = Utils.formatNumber(e.y, 0, true)
+        }
+
+        super.refreshContent(e, highlight)
+    }
+
+    override fun getOffset(): MPPointF {
+        return MPPointF(-(width / 2).toFloat(), -height.toFloat())
+    }
+}

app/src/main/java/info/appdev/chartexample/custom/MyMarkerView.kt

@@ -0,0 +1,37 @@
+package info.appdev.chartexample.custom
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.graphics.Typeface
+import android.widget.TextView
+import com.github.mikephil.charting.components.MarkerView
+import com.github.mikephil.charting.data.Entry
+import com.github.mikephil.charting.highlight.Highlight
+import com.github.mikephil.charting.utils.MPPointF
+import info.appdev.chartexample.R
+import java.text.DecimalFormat
+
+/**
+ * Custom implementation of the MarkerView.
+ */
+@SuppressLint("ViewConstructor")
+class RadarMarkerView(context: Context, layoutResource: Int) : MarkerView(context, layoutResource) {
+    private val tvContent: TextView = findViewById(R.id.tvContent)
+    private val format = DecimalFormat("##0")
+
+    init {
+        tvContent.setTypeface(Typeface.createFromAsset(context.assets, "OpenSans-Light.ttf"))
+    }
+
+    // runs every time the MarkerView is redrawn, can be used to update the
+    // content (user-interface)
+    override fun refreshContent(e: Entry, highlight: Highlight?) {
+        tvContent.text = String.format("%s %%", format.format(e.y.toDouble()))
+
+        super.refreshContent(e, highlight)
+    }
+
+    override fun getOffset(): MPPointF {
+        return MPPointF(-(width / 2).toFloat(), (-height - 10).toFloat())
+    }
+}

app/src/main/java/info/appdev/chartexample/custom/RadarMarkerView.java

@@ -0,0 +1,43 @@
+package info.appdev.chartexample.custom
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.widget.TextView
+import com.github.mikephil.charting.components.MarkerView
+import com.github.mikephil.charting.data.BarEntry
+import com.github.mikephil.charting.data.Entry
+import com.github.mikephil.charting.highlight.Highlight
+import com.github.mikephil.charting.utils.MPPointF
+import com.github.mikephil.charting.utils.Utils
+import info.appdev.chartexample.R
+
+/**
+ * Custom implementation of the MarkerView.
+ */
+@Suppress("unused")
+@SuppressLint("ViewConstructor")
+class StackedBarsMarkerView(context: Context?, layoutResource: Int) : MarkerView(context, layoutResource) {
+    private val tvContent: TextView = findViewById(R.id.tvContent)
+
+    // runs every time the MarkerView is redrawn, can be used to update the
+    // content (user-interface)
+    override fun refreshContent(entry: Entry, highlight: Highlight) {
+        if (entry is BarEntry) {
+
+            if (entry.yVals != null) {
+                // draw the stack value
+                tvContent.text = Utils.formatNumber(entry.yVals!![highlight.stackIndex], 0, true)
+            } else {
+                tvContent.text = Utils.formatNumber(entry.y, 0, true)
+            }
+        } else {
+            tvContent.text = Utils.formatNumber(entry.y, 0, true)
+        }
+
+        super.refreshContent(entry, highlight)
+    }
+
+    override fun getOffset(): MPPointF {
+        return MPPointF(-(width / 2).toFloat(), -height.toFloat())
+    }
+}

app/src/main/java/info/appdev/chartexample/custom/RadarMarkerView.kt

@@ -0,0 +1,33 @@
+package info.appdev.chartexample.custom
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.widget.TextView
+import com.github.mikephil.charting.components.MarkerView
+import com.github.mikephil.charting.data.Entry
+import com.github.mikephil.charting.formatter.IAxisValueFormatter
+import com.github.mikephil.charting.highlight.Highlight
+import com.github.mikephil.charting.utils.MPPointF
+import info.appdev.chartexample.R
+import java.text.DecimalFormat
+
+/**
+ * Custom implementation of the MarkerView.
+ */
+@SuppressLint("ViewConstructor")
+class XYMarkerView(context: Context?, private val xAxisValueFormatter: IAxisValueFormatter) : MarkerView(context, R.layout.custom_marker_view) {
+    private val tvContent: TextView = findViewById(R.id.tvContent)
+
+    private val format: DecimalFormat = DecimalFormat("###.0")
+
+    // runs every time the MarkerView is redrawn, can be used to update the content (user-interface)
+    override fun refreshContent(e: Entry, highlight: Highlight?) {
+        tvContent.text = String.format("x: %s, y: %s", xAxisValueFormatter.getFormattedValue(e.x, null), format.format(e.y.toDouble()))
+
+        super.refreshContent(e, highlight)
+    }
+
+    override fun getOffset(): MPPointF {
+        return MPPointF(-(width / 2).toFloat(), -height.toFloat())
+    }
+}