fix: getAxisLabel has viewPortHandler as parameter for user to use

Author: farfromrefug

Diff for: src/charting/formatter/IAxisValueFormatter.ts

@@ -1,4 +1,5 @@
 import { AxisBase } from '../components/AxisBase';
+import { ViewPortHandler } from '../utils/ViewPortHandler';
 
 /**
  * Created by Philipp Jahoda on 20/09/15.
@@ -9,15 +10,16 @@ import { AxisBase } from '../components/AxisBase';
  */
 export interface IAxisValueFormatter {
     /**
-   * Called when a value from an axis is to be formatted
-   * before being drawn. For performance reasons, avoid excessive calculations
-   * and memory allocations inside this method.
-   *
-   * @param value the value to be formatted
-   * @param axis  the axis the value belongs to
-   * @return
-   *
-   *  Extend {@link ValueFormatter} and use {@link ValueFormatter#getAxisLabel(float, AxisBase)}
-   */
-    getAxisLabel(value, axis: AxisBase): string;
+     * Called when a value from an axis is to be formatted
+     * before being drawn. For performance reasons, avoid excessive calculations
+     * and memory allocations inside this method.
+     *
+     * @param value the value to be formatted
+     * @param axis  the axis the value belongs to
+     * @param viewPortHandler  the viewPortHandler
+     * @return
+     *
+     *  Extend {@link ValueFormatter} and use {@link ValueFormatter#getAxisLabel(float, AxisBase)}
+     */
+    getAxisLabel(value, axis: AxisBase, viewPortHandler: ViewPortHandler): string;
 }

Diff for: src/charting/renderer/AxisRenderer.ts

@@ -209,7 +209,7 @@ export abstract class AxisRenderer extends Renderer {
 
             for (let i = 0; i < labelCount; i++) {
                 axis.mEntries[i] = v;
-                axis.mLabels[i] = formatter.getAxisLabel(v, axis);
+                axis.mLabels[i] = formatter.getAxisLabel(v, axis, this.mViewPortHandler);
                 v += interval;
             }
             n = labelCount;
@@ -258,7 +258,7 @@ export abstract class AxisRenderer extends Renderer {
                 }
 
                 axis.mEntries[i] = f;
-                axis.mLabels[i] = formatter.getAxisLabel(f, axis);
+                axis.mLabels[i] = formatter.getAxisLabel(f, axis, this.mViewPortHandler);
             }
         }
 

Diff for: src/charting/renderer/YAxisRendererRadarChart.ts

@@ -66,7 +66,7 @@ export class YAxisRendererRadarChart extends YAxisRenderer {
 
             for (let i = 0; i < labelCount; i++) {
                 axis.mEntries[i] = v;
-                axis.mLabels[i] = formatter.getAxisLabel(v, axis);
+                axis.mLabels[i] = formatter.getAxisLabel(v, axis, this.mViewPortHandler);
                 v += step;
             }
 
@@ -107,7 +107,7 @@ export class YAxisRendererRadarChart extends YAxisRenderer {
                 }
 
                 axis.mEntries[i] = f;
-                axis.mLabels[i] = formatter.getAxisLabel(f, axis);
+                axis.mLabels[i] = formatter.getAxisLabel(f, axis, this.mViewPortHandler);
             }
         }