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project/src/common/ShareMask.ts

 import { RES } from "../../module/RES";
 import { layers } from "../../module/views/layers";
 import centerTextField from "./centerTextField";
+import { getStageHeight } from "./stage";
 let mask;
 export default class ShareMask extends FYGE.Sprite {
 
@@ -25,15 +26,15 @@ export default class ShareMask extends FYGE.Sprite {
         callback = () => {
             this.parent && this.parent.removeChild(this);
             this.removeEventListener(FYGE.MouseEvent.CLICK, callback, this);
-            mask=null;
+            mask = null;
         };
 
         const sharepicWrapper = new FYGE.Sprite();
         const pic = sharepicWrapper.addChild(new FYGE.Sprite(RES.getRes('sharemask.png')));
-       
+
         const gap = 30;
-        sharepicWrapper.x = 750-pic.width-gap;
-        sharepicWrapper.y = gap;
+        sharepicWrapper.x = 750 - pic.width - gap;
+        sharepicWrapper.y = (1624 - getStageHeight()) + gap;
         this.addChild(sharepicWrapper);
 
         this.addEventListener(FYGE.MouseEvent.CLICK, callback, this);
@@ -41,13 +42,13 @@ export default class ShareMask extends FYGE.Sprite {
 }
 
 
-export const showShareMask = ()=>{
-    if(mask)return;
+export const showShareMask = () => {
+    if (mask) return;
     mask = new ShareMask();
     layers.shareLayer.addChild(mask);
 }
-export const hideShareMask = ()=>{
-    if(!mask) return;
+export const hideShareMask = () => {
+    if (!mask) return;
     layers.shareLayer.removeChild(mask);
-    mask=null;
+    mask = null;
 }
\ No newline at end of file

project/src/common/stage.ts

+import { layers } from "../../module/views/layers"
+
+export const getStageWidth = () => { return layers.stage.viewRect.width }
+export const getStageHeight = () => { return layers.stage.viewRect.height }
+export const getStageOffset = () => { return (1624 - getStageHeight()) / 2 }
\ No newline at end of file