From 105ca4598c927add6e77be071e4ac0eba9c45308 Mon Sep 17 00:00:00 2001
From: xiaoyao <15558110117@163.com>
Date: Thu, 7 Jan 2021 15:25:36 +0800
Subject: [PATCH] fix(canvas-renderer): verify image width and height

fix #1859
---
 src/render/canvas/canvas-renderer.ts | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/render/canvas/canvas-renderer.ts b/src/render/canvas/canvas-renderer.ts
index f6d3a4a..aedfd65 100644
--- a/src/render/canvas/canvas-renderer.ts
+++ b/src/render/canvas/canvas-renderer.ts
@@ -561,11 +561,14 @@ export class CanvasRenderer {
                         image.height,
                         image.width / image.height
                     ]);
-                    const pattern = this.ctx.createPattern(
+
+                    if( width > 0 && height > 0) {
+                      const pattern = this.ctx.createPattern(
                         this.resizeImage(image, width, height),
                         'repeat'
-                    ) as CanvasPattern;
-                    this.renderRepeat(path, pattern, x, y);
+                      ) as CanvasPattern;
+                      this.renderRepeat(path, pattern, x, y);
+                    }
                 }
             } else if (isLinearGradient(backgroundImage)) {
                 const [path, x, y, width, height] = calculateBackgroundRendering(container, index, [null, null, null]);