fix: chart notifies on zoom/pan ...

Author: farfromrefug

src/charting/charts/BarLineChartBase.ts

@@ -615,6 +615,9 @@ export abstract class BarLineChartBase<U extends Entry, D extends IBarLineScatte
         // So we need to recalculate offsets.
         this.calculateOffsets();
         this.invalidate();
+        if (this.hasListeners('zoom')) {
+            this.notify({ eventName: 'zoom', object: this, scaleX, scaleY, x, y });
+        }
     }
 
     /**

src/charting/listener/BarLineChartTouchListener.ts

@@ -388,6 +388,9 @@ export class BarLineChartTouchListener extends ChartTouchListener<BarLineChartBa
                     this.mMatrix.set(this.mSavedMatrix);
                     this.mMatrix.postScale(scaleX, scaleY, t.x, t.y);
                 }
+                if (chart.hasListeners('zoom')) {
+                    chart.notify({ eventName: 'zoom', scaleX, scaleY, ...t });
+                }
             } else if (this.mTouchMode === ChartTouchListener.X_ZOOM && chart.isScaleXEnabled()) {
                 this.mLastGesture = ChartGesture.X_ZOOM;
                 const t = this.getTrans(this.mTouchPointCenter.x, this.mTouchPointCenter.y);
@@ -402,6 +405,9 @@ export class BarLineChartTouchListener extends ChartTouchListener<BarLineChartBa
                     this.mMatrix.set(this.mSavedMatrix);
                     this.mMatrix.postScale(scaleX, 1, t.x, t.y);
                 }
+                if (chart.hasListeners('zoom')) {
+                    chart.notify({ eventName: 'zoom', scaleX, scaleY: 1, ...t });
+                }
             } else if (this.mTouchMode === ChartTouchListener.Y_ZOOM && chart.isScaleYEnabled()) {
                 this.mLastGesture = ChartGesture.Y_ZOOM;
                 const t = this.getTrans(this.mTouchPointCenter.x, this.mTouchPointCenter.y);
@@ -415,6 +421,9 @@ export class BarLineChartTouchListener extends ChartTouchListener<BarLineChartBa
                     this.mMatrix.set(this.mSavedMatrix);
                     this.mMatrix.postScale(1, scaleY, t.x, t.y);
                 }
+                if (chart.hasListeners('zoom')) {
+                    chart.notify({ eventName: 'zoom', scaleX: 1, scaleY, ...t });
+                }
             }
             this.mMatrix = chart.getViewPortHandler().refresh(this.mMatrix, chart, true);
             // }