Multiple colors for valueline

ChartsOrg/Charts#3709

Author: danielgindi

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/PiePolylineChartActivity.java

@@ -156,7 +156,6 @@ private void setData(int count, float range) {
         dataSet.setValueLinePart1OffsetPercentage(80.f);
         dataSet.setValueLinePart1Length(0.2f);
         dataSet.setValueLinePart2Length(0.4f);
-        //dataSet.setUsingSliceColorAsValueLineColor(true);
 
         //dataSet.setXValuePosition(PieDataSet.ValuePosition.OUTSIDE_SLICE);
         dataSet.setYValuePosition(PieDataSet.ValuePosition.OUTSIDE_SLICE);

MPChartLib/src/main/java/com/github/mikephil/charting/data/PieDataSet.java

@@ -23,8 +23,8 @@ public class PieDataSet extends DataSet<PieEntry> implements IPieDataSet {
 
     private ValuePosition mXValuePosition = ValuePosition.INSIDE_SLICE;
     private ValuePosition mYValuePosition = ValuePosition.INSIDE_SLICE;
-    private boolean mUsingSliceColorAsValueLineColor = false;
     private int mValueLineColor = 0xff000000;
+    private boolean mUseValueColorForLine = false;
     private float mValueLineWidth = 1.0f;
     private float mValueLinePart1OffsetPercentage = 75.f;
     private float mValueLinePart1Length = 0.3f;
@@ -137,15 +137,23 @@ public void setYValuePosition(ValuePosition yValuePosition) {
     }
 
     /**
-     * When valuePosition is OutsideSlice, use slice colors as line color if true
+     * This method is deprecated.
+     * Use isUseValueColorForLineEnabled() instead.
      */
-    @Override
+    @Deprecated
     public boolean isUsingSliceColorAsValueLineColor() {
-        return mUsingSliceColorAsValueLineColor;
+        return isUseValueColorForLineEnabled();
     }
 
-    public void setUsingSliceColorAsValueLineColor(boolean usingSliceColorAsValueLineColor) {
-        this.mUsingSliceColorAsValueLineColor = usingSliceColorAsValueLineColor;
+    /**
+     * This method is deprecated.
+     * Use setUseValueColorForLine(...) instead.
+     *
+     * @param enabled
+     */
+    @Deprecated
+    public void setUsingSliceColorAsValueLineColor(boolean enabled) {
+        setUseValueColorForLine(enabled);
     }
 
     /**
@@ -160,6 +168,17 @@ public void setValueLineColor(int valueLineColor) {
         this.mValueLineColor = valueLineColor;
     }
 
+    @Override
+    public boolean isUseValueColorForLineEnabled()
+    {
+        return mUseValueColorForLine;
+    }
+
+    public void setUseValueColorForLine(boolean enabled)
+    {
+        mUseValueColorForLine = enabled;
+    }
+
     /**
      * When valuePosition is OutsideSlice, indicates line width
      */

MPChartLib/src/main/java/com/github/mikephil/charting/interfaces/datasets/IPieDataSet.java

@@ -38,14 +38,14 @@ public interface IPieDataSet extends IDataSet<PieEntry> {
     PieDataSet.ValuePosition getYValuePosition();
 
     /**
-     * When valuePosition is OutsideSlice, use slice colors as line color if true
+     * When valuePosition is OutsideSlice, indicates line color
      * */
-    boolean isUsingSliceColorAsValueLineColor();
+    int getValueLineColor();
 
     /**
-     * When valuePosition is OutsideSlice, indicates line color
+     * When valuePosition is OutsideSlice and enabled, line will have the same color as the slice
      * */
-    int getValueLineColor();
+    boolean isUseValueColorForLineEnabled();
 
     /**
      *  When valuePosition is OutsideSlice, indicates line width

MPChartLib/src/main/java/com/github/mikephil/charting/renderer/PieChartRenderer.java

@@ -468,7 +468,9 @@ public void drawValues(Canvas c) {
 
             int entryCount = dataSet.getEntryCount();
 
-            mValueLinePaint.setColor(dataSet.getValueLineColor());
+            boolean isUseValueColorForLineEnabled = dataSet.isUseValueColorForLineEnabled();
+            int valueLineColor = dataSet.getValueLineColor();
+
             mValueLinePaint.setStrokeWidth(Utils.convertDpToPixel(dataSet.getValueLineWidth()));
 
             final float sliceSpace = getSliceSpace(dataSet);
@@ -565,12 +567,15 @@ public void drawValues(Canvas c) {
                         labelPty = pt2y;
                     }
 
-                    if (dataSet.getValueLineColor() != ColorTemplate.COLOR_NONE) {
+                    int lineColor = ColorTemplate.COLOR_NONE;
 
-                        if (dataSet.isUsingSliceColorAsValueLineColor()) {
-                            mValueLinePaint.setColor(dataSet.getColor(j));
-                        }
+                    if (isUseValueColorForLineEnabled)
+                        lineColor = dataSet.getColor(j);
+                    else if (valueLineColor != ColorTemplate.COLOR_NONE)
+                        lineColor = valueLineColor;
 
+                    if (lineColor != ColorTemplate.COLOR_NONE) {
+                        mValueLinePaint.setColor(lineColor);
                         c.drawLine(pt0x, pt0y, pt1x, pt1y, mValueLinePaint);
                         c.drawLine(pt1x, pt1y, pt2x, pt2y, mValueLinePaint);
                     }