fix(padding): 兼容非法padding

Author: 酥云

__tests__/unit/plots/venn/padding-spec.ts

@@ -125,6 +125,36 @@ describe('venn padding', () => {
     });
   });
 
+  it('兼容非法 padding', () => {
+    plot.changeSize(400, 400);
+    plot.update({
+      legend: false,
+      appendPadding: 0,
+      padding: 250,
+    });
+    plot.chart.geometries[0].data.forEach((datum) => {
+      if (datum.sets.length === 1) {
+        expect(datum.radius).toBe(0);
+      }
+      expect(datum.x).toBe(0);
+      expect(datum.y).toBe(0);
+    });
+
+    plot.changeSize(800, 400);
+    plot.update({
+      legend: false,
+      appendPadding: 0,
+      padding: 200,
+    });
+    plot.chart.geometries[0].data.forEach((datum) => {
+      if (datum.sets.length === 1) {
+        expect(datum.radius).toBe(0);
+      }
+      expect(datum.x).toBe(200);
+      expect(datum.y).toBe(0);
+    });
+  });
+
   afterAll(() => {
     plot.destroy();
   });

src/plots/venn/adaptor.ts

@@ -64,8 +64,8 @@ function geometry(params: Params<VennOptions>): Params<VennOptions> {
   const customInfo: CustomInfo = { offsetX: l, offsetY: t, label };
   // coordinateBBox + appendPadding = viewBBox, 不需要再计算 appendPadding 部分，因此直接使用 viewBBox
   const { width, height } = chart.viewBBox;
-
-  const vennData: VennData = layoutVennData(options, width - (r + l), height - (t + b), 0);
+  // 处理padding输入不合理的情况， w 和 h 不能为负数
+  const vennData: VennData = layoutVennData(options, Math.max(width - (r + l), 0), Math.max(height - (t + b), 0), 0);
   chart.data(vennData);
 
   const { ext } = schemaGeometry(