From 3d76b08bd82aac277309eac708ac71980ced005a Mon Sep 17 00:00:00 2001
From: hyperlife1119 <hyperlife1119@qq.com>
Date: Tue, 21 May 2024 11:46:25 +0800
Subject: [PATCH] perf(module:qr-code): improved background drawing efficiency

---
 components/qr-code/qrcode.ts | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/components/qr-code/qrcode.ts b/components/qr-code/qrcode.ts
index 0ea38fa9bd5..fd34e5657c2 100644
--- a/components/qr-code/qrcode.ts
+++ b/components/qr-code/qrcode.ts
@@ -105,12 +105,8 @@ export function drawCanvasBackground(
   scale: number,
   backgroundColor: string
 ): void {
-  for (let y = 0; y < height; y++) {
-    for (let x = 0; x < width; x++) {
-      ctx.fillStyle = backgroundColor;
-      ctx.fillRect(x * scale, y * scale, scale, scale);
-    }
-  }
+  ctx.fillStyle = backgroundColor;
+  ctx.fillRect(0, 0, width * scale, height * scale);
 }
 
 export function formatPadding(padding: number | number[]): number[] {