1

ems-frontend/node_modules/zrender/src/canvas/dashStyle.ts

@@ -0,0 +1,32 @@
+import { isArray, isNumber, map } from '../core/util';
+import Path from '../graphic/Path';
+import TSpan from '../graphic/TSpan';
+
+export function normalizeLineDash(lineType: any, lineWidth?: number): number[] | false {
+    if (!lineType || lineType === 'solid' || !(lineWidth > 0)) {
+        return null;
+    }
+    return lineType === 'dashed'
+        ? [4 * lineWidth, 2 * lineWidth]
+        : lineType === 'dotted'
+            ? [lineWidth]
+            : isNumber(lineType)
+                ? [lineType] : isArray(lineType) ? lineType : null;
+}
+export function getLineDash(el: Path | TSpan): [number[] | false, number] {
+    const style = el.style;
+
+    let lineDash = style.lineDash && style.lineWidth > 0 && normalizeLineDash(style.lineDash, style.lineWidth);
+    let lineDashOffset = style.lineDashOffset;
+
+    if (lineDash) {
+        const lineScale = (style.strokeNoScale && el.getLineScale) ? el.getLineScale() : 1;
+        if (lineScale && lineScale !== 1) {
+            lineDash = map(lineDash, function (rawVal) {
+                return rawVal / lineScale;
+            });
+            lineDashOffset /= lineScale;
+        }
+    }
+    return [lineDash, lineDashOffset];
+}