Translate texts on menu bar (#695)

labelImg.py

@@ -371,11 +371,11 @@ class MainWindow(QMainWindow, WindowMixin):
                               onShapesPresent=(saveAs, hideAll, showAll))
 
         self.menus = struct(
-            file=self.menu('&File'),
-            edit=self.menu('&Edit'),
-            view=self.menu('&View'),
-            help=self.menu('&Help'),
-            recentFiles=QMenu('Open &Recent'),
+            file=self.menu(getStr('menu_file')),
+            edit=self.menu(getStr('menu_edit')),
+            view=self.menu(getStr('menu_view')),
+            help=self.menu(getStr('menu_help')),
+            recentFiles=QMenu(getStr('menu_openRecent')),
             labelList=labelMenu)
 
         # Auto saving : Enable auto saving if pressing next

resources/strings/strings-zh-CN.properties

@@ -66,3 +66,8 @@ advancedMode=专家模式
 advancedModeDetail=切换到专家模式
 showAllBoxDetail=显示所有区块
 hideAllBoxDetail=隐藏所有区块
+menu_file=文件(&F)
+menu_edit=编辑(&E)
+menu_view=查看(&V)
+menu_help=帮助(&H)
+menu_openRecent=最近打开(&R)

resources/strings/strings-zh-TW.properties

@@ -66,3 +66,8 @@ advancedMode=進階模式
 advancedModeDetail=切到進階模式
 showAllBoxDetail=顯示所有區塊
 hideAllBoxDetail=隱藏所有區塊
+menu_file=檔案(&F)
+menu_edit=編輯(&E)
+menu_view=檢視(&V)
+menu_help=說明(&H)
+menu_openRecent=最近開啟(&R)

resources/strings/strings.properties

@@ -66,3 +66,8 @@ advancedMode=Advanced Mode
 advancedModeDetail=Swtich to advanced mode
 showAllBoxDetail=Show all bounding boxes
 hideAllBoxDetail=Hide all bounding boxes
+menu_file=&File
+menu_edit=&Edit
+menu_view=&View
+menu_help=&Help
+menu_openRecent=Open &Recent