<NME> we-cropper.wxml
<BEF> <template name="we-cropper">
    <canvas
            class="cropper"
            disable-scroll="true"
            bindtouchstart="touchStart"
            bindtouchmove="touchMove"
            bindtouchend="touchEnd"
            style="width:{{width}}px;height:{{height}}px;background-color: rgba(0, 0, 0, 0.8)"
            canvas-id="{{id}}">
    </canvas>
</template>

<MSG> build: build dist

<DFF> @@ -1,11 +1,20 @@
 <template name="we-cropper">
-    <canvas
-            class="cropper"
-            disable-scroll="true"
-            bindtouchstart="touchStart"
-            bindtouchmove="touchMove"
-            bindtouchend="touchEnd"
-            style="width:{{width}}px;height:{{height}}px;background-color: rgba(0, 0, 0, 0.8)"
-            canvas-id="{{id}}">
-    </canvas>
+  <canvas
+    class="cropper"
+    disable-scroll="true"
+    bindtouchstart="touchStart"
+    bindtouchmove="touchMove"
+    bindtouchend="touchEnd"
+    style="width:{{width}}px;height:{{height}}px;background-color: rgba(0, 0, 0, 0.8)"
+    canvas-id="{{id}}">
+  </canvas>
+  <canvas
+    class="cropper"
+    disable-scroll="true"
+    bindtouchstart="touchStart"
+    bindtouchmove="touchMove"
+    bindtouchend="touchEnd"
+    style="position: fixed; top: -{{width * pixelRatio}}px; left: -{{height * pixelRatio}}px; width:{{width * pixelRatio}}px;height:{{height * pixelRatio}}px;"
+    canvas-id="{{targetId}}">
+  </canvas>
 </template>
\ No newline at end of file

build: build dist