Merge pull request #449 from AppDevNext/KotlinGradientColor

Kotlin GradientColor

Author: hannesa2

MPChartLib/src/main/java/com/github/mikephil/charting/model/GradientColor.java

@@ -0,0 +1,46 @@
+package com.github.mikephil.charting.model
+
+import com.github.mikephil.charting.utils.Fill
+
+@Deprecated("Use `Fill` instead")
+class GradientColor : Fill() {
+    @get:Deprecated("Use `Fill.getGradientColors()`")
+    @set:Deprecated("Use `Fill.setGradientColors(...)`")
+    var startColor: Int
+        get() = gradientColors[0]
+        set(startColor) {
+            if (gradientColors == null || gradientColors.size != 2) {
+                setGradientColors(
+                    intArrayOf(
+                        startColor,
+                        if (gradientColors != null && gradientColors.size > 1)
+                            gradientColors[1]
+                        else
+                            0
+                    )
+                )
+            } else {
+                gradientColors[0] = startColor
+            }
+        }
+
+    @get:Deprecated("Use `Fill.getGradientColors()`")
+    @set:Deprecated("Use `Fill.setGradientColors(...)`")
+    var endColor: Int
+        get() = gradientColors[1]
+        set(endColor) {
+            if (gradientColors == null || gradientColors.size != 2) {
+                setGradientColors(
+                    intArrayOf(
+                        if (gradientColors != null && gradientColors.size > 0)
+                            gradientColors[0]
+                        else
+                            0,
+                        endColor
+                    )
+                )
+            } else {
+                gradientColors[1] = endColor
+            }
+        }
+}