Alpha channel

Author: dvomaks

upload-2.vue

@@ -784,8 +784,8 @@ export default {
             ctx.clearRect(0, 0, that.width, that.height);
 
             // 将透明区域设置为白色底边
-            ctx.fillStyle = "#fff";
-            ctx.fillRect(0, 0, that.width, that.height);
+            // ctx.fillStyle = "#fff";
+            // ctx.fillRect(0, 0, that.width, that.height);
 
             ctx.translate(that.width * 0.5, that.height * 0.5);
             ctx.rotate(Math.PI * degree / 180);