fix: Horizontal Lines not displayed (#46)

library/src/main/java/com/dzeio/charts/axis/YAxis.kt

@@ -148,17 +148,16 @@ class YAxis(
 
         val min = getYMin()
         val max = getYMax() - min
-        val bottom = space.bottom
         var maxWidth = 0f
 
-        val increment = space.height() / (labelCount - 1)
         val valueIncrement = max / (labelCount - 1)
         for (index in 0 until labelCount) {
+            val value = min + (valueIncrement * index)
             val text = onValueFormat(min + (valueIncrement * index))
             textLabel.getTextBounds(text, 0, text.length, rect)
             maxWidth = maxWidth.coerceAtLeast(rect.width().toFloat())
 
-            val posY = bottom - index * increment
+            val posY = getPositionOnRect(value, space)
 
             canvas.drawText(
                 text,
@@ -166,12 +165,13 @@ class YAxis(
                 (posY + rect.height() / 2).coerceAtLeast(rect.height().toFloat()),
                 textLabel
             )
-//            canvas.drawDottedLine(0f, posY, canvas.width.toFloat(), posY, 40f, linePaint)
             canvas.drawLine(space.left, posY, space.right - maxWidth - 32f, posY, linePaint)
         }
 
         for ((y, settings) in lines) {
-            val pos = ((1 - y - min / (getYMax() - min)) * space.height() + space.top)
+            val pos = getPositionOnRect(y, space)
+            val text = onValueFormat(y)
+            textLabel.getTextBounds(text, 0, text.length, rect)
             if (settings.dotted) {
                 canvas.drawDottedLine(
                     0f,
@@ -190,6 +190,12 @@ class YAxis(
                     settings.paint ?: linePaint
                 )
             }
+            canvas.drawText(
+                text,
+                space.width() - rect.width().toFloat(),
+                (pos + rect.height() / 2).coerceAtLeast(rect.height().toFloat()),
+                textLabel
+            )
         }
 
         return maxWidth + 32f

sample/src/main/java/com/dzeio/chartstest/ui/MainFragment.kt

@@ -1,6 +1,7 @@
 package com.dzeio.chartstest.ui
 
 import android.graphics.Color
+import android.graphics.Paint
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
@@ -9,6 +10,7 @@ import androidx.fragment.app.Fragment
 import com.dzeio.charts.ChartType
 import com.dzeio.charts.ChartView
 import com.dzeio.charts.Entry
+import com.dzeio.charts.axis.Line
 import com.dzeio.charts.series.BarSerie
 import com.dzeio.charts.series.LineSerie
 import com.dzeio.chartstest.databinding.FragmentMainBinding
@@ -21,7 +23,8 @@ class MainFragment : Fragment() {
     private val binding get() = _binding!!
 
     override fun onCreateView(
-        inflater: LayoutInflater, container: ViewGroup?,
+        inflater: LayoutInflater,
+        container: ViewGroup?,
         savedInstanceState: Bundle?
     ): View {
         _binding = FragmentMainBinding.inflate(inflater, container, false)
@@ -144,15 +147,21 @@ class MainFragment : Fragment() {
                 labelCount = 11
 
                 // change how labels are displayed
-                onValueFormat = { "${it.roundToInt()}g"}
+                onValueFormat = { "${it.roundToInt()}g" }
 
                 // change labels colors
                 textLabel.color = Color.WHITE
 
-
                 // change line color
                 linePaint.color = Color.WHITE
 
+                // Add horizontal Lines
+                val paint: Paint = Paint(yAxis.linePaint).apply {
+                    strokeWidth = 8f
+                }
+                addLine(10f, Line(true, paint))
+                addLine(-10f, Line(true, paint))
+
                 // change the min/max high
                 setYMin(-20f)
                 setYMax(20f)
@@ -192,10 +201,12 @@ class MainFragment : Fragment() {
         val dataset: ArrayList<Entry> = arrayListOf()
 
         for (i in 0 until size) {
-            dataset.add(Entry(
+            dataset.add(
-                i.toDouble(),
+                Entry(
-                Random.nextInt(min, max).toFloat()
+                    i.toDouble(),
-            ))
+                    Random.nextInt(min, max).toFloat()
+                )
+            )
         }
 
         return dataset
@@ -205,7 +216,6 @@ class MainFragment : Fragment() {
      * Apply Material3 theme to a [ChartView]
      */
     private fun materielTheme(chart: ChartView, view: View) {
-
         chart.apply {
             yAxis.apply {
                 textLabel.color = MaterialColors.getColor(