Kotlin items

app/src/main/java/info/appdev/chartexample/BarChartActivity.kt

@@ -31,8 +31,8 @@ import com.github.mikephil.charting.listener.OnChartValueSelectedListener
 import com.github.mikephil.charting.utils.Fill
 import com.github.mikephil.charting.utils.MPPointF
 import info.appdev.chartexample.DataTools.Companion.getValues
-import info.appdev.chartexample.custom.DayAxisValueFormatter
-import info.appdev.chartexample.custom.MyAxisValueFormatter
+import info.appdev.chartexample.formatter.DayAxisValueFormatter
+import info.appdev.chartexample.formatter.MyAxisValueFormatter
 import info.appdev.chartexample.custom.XYMarkerView
 import info.appdev.chartexample.notimportant.DemoBase
 

app/src/main/java/info/appdev/chartexample/ListViewBarChartActivity.kt

@@ -27,8 +27,6 @@ import androidx.core.net.toUri
 /**
  * Demonstrates the use of charts inside a ListView. IMPORTANT: provide a
  * specific height attribute for the chart inside your ListView item
- *
- * @author Philipp Jahoda
  */
 class ListViewBarChartActivity : DemoBase() {
     override fun onCreate(savedInstanceState: Bundle?) {

app/src/main/java/info/appdev/chartexample/ListViewMultiChartActivity.kt

@@ -65,15 +65,15 @@ class ListViewMultiChartActivity : DemoBase() {
     }
 
     /** adapter that supports 3 different item types  */
-    private class ChartDataAdapter(context: Context, objects: MutableList<ChartItem?>) : ArrayAdapter<ChartItem?>(context, 0, objects) {
+    private class ChartDataAdapter(context: Context, objects: MutableList<ChartItem?>) : ArrayAdapter<ChartItem>(context, 0, objects) {
         override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
-            return getItem(position)!!.getView(position, convertView, context)
+            return getItem(position)!!.getView(position, convertView, context)!!
         }
 
         override fun getItemViewType(position: Int): Int {
             // return the views type
             val ci = getItem(position)
-            return if (ci != null) ci.getItemType() else 0
+            return if (ci != null) ci.itemType else 0
         }
 
         override fun getViewTypeCount(): Int {

app/src/main/java/info/appdev/chartexample/StackedBarActivity.kt

@@ -26,8 +26,8 @@ import com.github.mikephil.charting.interfaces.datasets.IBarDataSet
 import com.github.mikephil.charting.listener.OnChartValueSelectedListener
 import com.github.mikephil.charting.utils.ColorTemplate
 import info.appdev.chartexample.DataTools.Companion.getValues
-import info.appdev.chartexample.custom.MyAxisValueFormatter
-import info.appdev.chartexample.custom.MyValueFormatter
+import info.appdev.chartexample.formatter.MyAxisValueFormatter
+import info.appdev.chartexample.formatter.MyValueFormatter
 import info.appdev.chartexample.notimportant.DemoBase
 
 class StackedBarActivity : DemoBase(), OnSeekBarChangeListener, OnChartValueSelectedListener {

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

@@ -0,0 +1,28 @@
+package info.appdev.chartexample.custom
+
+import android.graphics.Canvas
+import android.graphics.Paint
+import com.github.mikephil.charting.interfaces.datasets.IScatterDataSet
+import com.github.mikephil.charting.renderer.scatter.IShapeRenderer
+import com.github.mikephil.charting.utils.Utils
+import com.github.mikephil.charting.utils.ViewPortHandler
+
+/**
+ * Custom shape renderer that draws a single line.
+ */
+class CustomScatterShapeRenderer : IShapeRenderer {
+    override fun renderShape(
+        canvas: Canvas, dataSet: IScatterDataSet, viewPortHandler: ViewPortHandler?,
+        posX: Float, posY: Float, renderPaint: Paint
+    ) {
+        val shapeHalf = Utils.convertDpToPixel(dataSet.getScatterShapeSize()) / 2f
+
+        canvas.drawLine(
+            posX - shapeHalf,
+            posY - shapeHalf,
+            posX + shapeHalf,
+            posY + shapeHalf,
+            renderPaint
+        )
+    }
+}

app/src/main/java/info/appdev/chartexample/custom/DayAxisValueFormatter.kt → app/src/main/java/info/appdev/chartexample/formatter/DayAxisValueFormatter.kt

@@ -1,4 +1,4 @@
-package info.appdev.chartexample.custom
+package info.appdev.chartexample.formatter
 
 import com.github.mikephil.charting.charts.BarLineChartBase
 import com.github.mikephil.charting.components.AxisBase

app/src/main/java/info/appdev/chartexample/custom/MyAxisValueFormatter.kt → app/src/main/java/info/appdev/chartexample/formatter/MyAxisValueFormatter.kt

@@ -1,4 +1,4 @@
-package info.appdev.chartexample.custom
+package info.appdev.chartexample.formatter
 
 import com.github.mikephil.charting.components.AxisBase
 import com.github.mikephil.charting.formatter.IAxisValueFormatter

app/src/main/java/info/appdev/chartexample/custom/MyFillFormatter.kt → app/src/main/java/info/appdev/chartexample/formatter/MyFillFormatter.kt

@@ -1,4 +1,4 @@
-package info.appdev.chartexample.custom
+package info.appdev.chartexample.formatter
 
 import com.github.mikephil.charting.formatter.IFillFormatter
 import com.github.mikephil.charting.interfaces.dataprovider.LineDataProvider
@@ -10,4 +10,4 @@ class MyFillFormatter(private val fillPos: Float) : IFillFormatter {
         // your logic could be here
         return fillPos
     }
-}
+}

app/src/main/java/info/appdev/chartexample/custom/MyValueFormatter.kt → app/src/main/java/info/appdev/chartexample/formatter/MyValueFormatter.kt

@@ -1,4 +1,4 @@
-package info.appdev.chartexample.custom
+package info.appdev.chartexample.formatter
 
 import com.github.mikephil.charting.data.Entry
 import com.github.mikephil.charting.formatter.IValueFormatter

app/src/main/java/info/appdev/chartexample/custom/YearXAxisFormatter.kt → app/src/main/java/info/appdev/chartexample/formatter/YearXAxisFormatter.kt

@@ -1,4 +1,4 @@
-package info.appdev.chartexample.custom
+package info.appdev.chartexample.formatter
 
 import com.github.mikephil.charting.components.AxisBase
 import com.github.mikephil.charting.formatter.IAxisValueFormatter

app/src/main/java/info/appdev/chartexample/fragments/BarChartFrag.kt

@@ -0,0 +1,97 @@
+package info.appdev.chartexample.fragments
+
+import android.graphics.Typeface
+import android.os.Bundle
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.MotionEvent
+import android.view.View
+import android.view.ViewGroup
+import android.widget.FrameLayout
+import androidx.fragment.app.Fragment
+import com.github.mikephil.charting.charts.BarChart
+import com.github.mikephil.charting.listener.ChartTouchListener.ChartGesture
+import com.github.mikephil.charting.listener.OnChartGestureListener
+import info.appdev.chartexample.R
+import info.appdev.chartexample.custom.MyMarkerView
+
+class BarChartFrag : SimpleFragment(), OnChartGestureListener {
+    private var chart: BarChart? = null
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
+        val v = inflater.inflate(R.layout.frag_simple_bar, container, false)
+
+        // create a new chart object
+        chart = BarChart(requireActivity())
+        chart!!.description.isEnabled = false
+        chart!!.onChartGestureListener = this
+
+        val mv = MyMarkerView(activity, R.layout.custom_marker_view)
+        mv.chartView = chart // For bounds control
+        chart!!.setMarker(mv)
+
+        chart!!.setDrawGridBackground(false)
+        chart!!.setDrawBarShadow(false)
+
+        val tf = Typeface.createFromAsset(requireContext().assets, "OpenSans-Light.ttf")
+
+        chart!!.setData(generateBarData(1, 20000f))
+
+        val l = chart!!.legend
+        l.typeface = tf
+
+        val leftAxis = chart!!.axisLeft
+        leftAxis.typeface = tf
+        leftAxis.setAxisMinimum(0f) // this replaces setStartAtZero(true)
+
+        chart!!.axisRight.isEnabled = false
+
+        val xAxis = chart!!.xAxis
+        xAxis.isEnabled = false
+
+        // programmatically add the chart
+        val parent = v.findViewById<FrameLayout>(R.id.parentLayout)
+        parent.addView(chart)
+
+        return v
+    }
+
+    override fun onChartGestureStart(me: MotionEvent?, lastPerformedGesture: ChartGesture?) {
+        Log.i("Gesture", "START")
+    }
+
+    override fun onChartGestureEnd(me: MotionEvent?, lastPerformedGesture: ChartGesture?) {
+        Log.i("Gesture", "END")
+        chart!!.highlightValues(null)
+    }
+
+    override fun onChartLongPressed(me: MotionEvent?) {
+        Log.i("LongPress", "Chart long pressed.")
+    }
+
+    override fun onChartDoubleTapped(me: MotionEvent?) {
+        Log.i("DoubleTap", "Chart double-tapped.")
+    }
+
+    override fun onChartSingleTapped(me: MotionEvent?) {
+        Log.i("SingleTap", "Chart single-tapped.")
+    }
+
+    override fun onChartFling(me1: MotionEvent?, me2: MotionEvent?, velocityX: Float, velocityY: Float) {
+        Log.i("Fling", "Chart fling. VelocityX: $velocityX, VelocityY: $velocityY")
+    }
+
+    override fun onChartScale(me: MotionEvent?, scaleX: Float, scaleY: Float) {
+        Log.i("Scale / Zoom", "ScaleX: $scaleX, ScaleY: $scaleY")
+    }
+
+    override fun onChartTranslate(me: MotionEvent?, dX: Float, dY: Float) {
+        Log.i("Translate / Move", "dX: $dX, dY: $dY")
+    }
+
+    companion object {
+        fun newInstance(): Fragment {
+            return BarChartFrag()
+        }
+    }
+}