feat: Allow to switch line/points/dottedline display (#56)

library/build.gradle.kts

@@ -24,7 +24,7 @@ publishing {
 }
 
 android {
-    namespace = "${group}.${artifact}"
+    namespace = "$group.$artifact"
     compileSdk = 33
     buildToolsVersion = "33.0.0"
 

library/src/main/java/com/dzeio/charts/series/LineSerie.kt

@@ -5,6 +5,7 @@ import android.graphics.Color
 import android.graphics.Paint
 import android.graphics.RectF
 import com.dzeio.charts.ChartViewInterface
+import com.dzeio.charts.utils.drawDottedLine
 import kotlin.math.abs
 
 class LineSerie(
@@ -25,6 +26,21 @@ class LineSerie(
         strokeWidth = 5f
     }
 
+    /**
+     * is the line dotted
+     */
+    var dotted = false
+
+    /**
+     * do we display the points?
+     */
+    var displayPoints = true
+
+    /**
+     * do we display the lines
+     */
+    var displayLines = true
+
     val textPaint = Paint().apply {
         isAntiAlias = true
         color = Color.BLACK
@@ -98,12 +114,12 @@ class LineSerie(
                 )
 
             // draw smol point
-            if (drawableSpace.contains(posX, top)) {
+            if (drawableSpace.contains(posX, top) && displayPoints) {
                 canvas.drawCircle(posX, top, paint.strokeWidth, paint)
             }
 
             // draw line
-            if (doDraw && previousPosY != null && previousPosX != null) {
+            if (doDraw && previousPosY != null && previousPosX != null && displayLines) {
                 var startX = previousPosX
                 var startY = previousPosY
                 var stopX = posX
@@ -165,7 +181,24 @@ class LineSerie(
                         debugPaint.color = Color.RED
                     }
                 }
-                canvas.drawLine(startX, startY, stopX, stopY, if (view.debug) debugPaint else linePaint)
+                if (dotted) {
+                    canvas.drawDottedLine(
+                        startX,
+                        startY,
+                        stopX,
+                        stopY,
+                        32f,
+                        if (view.debug) debugPaint else linePaint
+                    )
+                } else {
+                    canvas.drawLine(
+                        startX,
+                        startY,
+                        stopX,
+                        stopY,
+                        if (view.debug) debugPaint else linePaint
+                    )
+                }
             }
             previousPosX = posX
             previousPosY = top

sample/src/main/java/com/dzeio/chartsapp/ui/ChartFragment.kt

@@ -138,6 +138,23 @@ class ChartFragment : Fragment() {
                 chart.refresh()
             }
         }
+
+        if (args.chartType === "linechart") {
+            binding.lineItem.visibility = View.VISIBLE
+
+            binding.lineDisplayLines.setOnCheckedChangeListener { _, isChecked ->
+                chart.series.forEach { (it as LineSerie).displayLines = isChecked }
+                chart.refresh()
+            }
+            binding.lineDisplayPoints.setOnCheckedChangeListener { _, isChecked ->
+                chart.series.forEach { (it as LineSerie).displayPoints = isChecked }
+                chart.refresh()
+            }
+            binding.lineDotted.setOnCheckedChangeListener { _, isChecked ->
+                chart.series.forEach { (it as LineSerie).dotted = isChecked }
+                chart.refresh()
+            }
+        }
     }
 
     private var lastGenerated = 0

sample/src/main/res/layout/fragment_chart.xml

@@ -209,6 +209,36 @@
 
             </LinearLayout>
 
+            <LinearLayout
+                android:id="@+id/line_item"
+                android:visibility="gone"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical">
+
+                <com.google.android.material.materialswitch.MaterialSwitch
+                    android:id="@+id/line_dotted"
+                    android:text="Switch Dotted line"
+                    android:checked="false"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content" />
+
+                <com.google.android.material.materialswitch.MaterialSwitch
+                    android:id="@+id/line_display_points"
+                    android:text="Display points"
+                    android:checked="true"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content" />
+
+                <com.google.android.material.materialswitch.MaterialSwitch
+                    android:id="@+id/line_display_lines"
+                    android:text="Display lines"
+                    android:checked="true"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content" />
+
+            </LinearLayout>
+
         </LinearLayout>
 
     </ScrollView>