扫码结果改为弹新窗口(PopupWindow)展示，不再替换当前页面

root.page_center → PopupWindow，扫码后弹出 85% 新窗口打开链接内容

wwwroot/qr_scan.ui

@@ -6,9 +6,15 @@
             "wid": "self",
             "event": "recognized",
             "actiontype": "urlwidget",
-            "target": "root.page_center",
+            "target": "PopupWindow",
+            "popup_options": {
+                "title": "扫码结果",
+                "dismiss_events": ["cancel"],
+                "height": "85%",
+                "width": "85%"
+            },
             "options": {
-                "url": "${text}"
+                "url": "${text}$"
             }
         },
         {