perf(module:qr-code): improved background drawing efficiency (#8543)

NG-ZORRO · May 23, 2024 · db09bf7 · db09bf7
1 parent 65cbb4e
commit db09bf7
Showing 1 changed file with 2 additions and 6 deletions.
diff --git 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[] {