fix(matrix): fix matrix label formatter does not work

src/component/matrix/MatrixView.ts

@@ -31,7 +31,8 @@ import { LineShape } from 'zrender/src/graphic/shape/Line';
 import { subPixelOptimize } from 'zrender/src/graphic/helper/subPixelOptimize';
 import { Group, Text, Rect, Line, XY, setTooltipConfig, expandOrShrinkRect } from '../../util/graphic';
 import { clearTmpModel, ListIterator } from '../../util/model';
-import { clone, retrieve2 } from 'zrender/src/core/util';
+import { clone, retrieve2, isFunction, isString } from 'zrender/src/core/util';
+import { formatTplSimple } from '../../util/format';
 import { invert } from 'zrender/src/core/matrix';
 import { MatrixBodyCorner, MatrixBodyOrCornerKind } from '../../coord/matrix/MatrixBodyCorner';
 import { setLabelStyle } from '../../label/labelStyle';
@@ -289,12 +290,33 @@ function createMatrixCell(
     let cellText: Text | NullUndefined;
 
     if (textValue != null) {
-        const text = textValue + '';
+        let text = textValue + '';
         _tmpCellLabelModel.option = cellOption ? cellOption.label : null;
         _tmpCellLabelModel.parentModel = parentLabelModel;
         // This is to accept `option.textStyle` as the default.
         _tmpCellLabelModel.ecModel = ecModel;
 
+        const formatter = _tmpCellLabelModel.getShallow('formatter');
+        if (formatter) {
+            const params = {
+                componentType: 'matrix' as const,
+                componentIndex: matrixModel.componentIndex,
+                name: text,
+                value: textValue as unknown,
+                xyLocator: xyLocator.slice() as MatrixXYLocator[],
+                $vars: ['name', 'value', 'xyLocator'] as const
+            };
+            if (isFunction(formatter)) {
+                const formattedText = formatter(params);
+                if (formattedText != null) {
+                    text = formattedText + '';
+                }
+            }
+            else if (isString(formatter)) {
+                text = formatTplSimple(formatter, params);
+            }
+        }
+
         setLabelStyle(
             cellRect,
             // Currently do not support other states (`emphasis`, `select`, `blur`)

src/coord/matrix/MatrixModel.ts

@@ -195,6 +195,19 @@ export interface MatrixDimensionLevelOption {
 export interface MatrixDimensionModel extends Model<MatrixDimensionOption> {
 }
 
+export interface MatrixLabelOption extends LabelOption {
+    formatter?: string | ((params: MatrixLabelFormatterParams) => string);
+}
+
+export interface MatrixLabelFormatterParams {
+    componentType: 'matrix';
+    componentIndex: number;
+    name: string;
+    value: unknown;
+    xyLocator: MatrixXYLocator[];
+    $vars: readonly ['name', 'value', 'xyLocator'];
+}
+
 /**
  * Two levels of cascade inheritance:
  *  - priority-high: style options defined in `matrix.x/y/coner/body.data[i]` (in cell)
@@ -209,7 +222,7 @@ export interface MatrixCellStyleOption {
     //    The text truncation rect is obtained by cell rect minus by padding.
     //  - The inner series / other coord sys padding is not supported, to avoid necessary complexity.
     //    Consider some series, such as heatmap, prefer no padding.
-    label?: LabelOption;
+    label?: MatrixLabelOption;
     itemStyle?: ItemStyleOption;
     cursor?: string;
     // By default, auto decide whether to be silent, considering tooltip.