如何查找键盘是否覆盖控件

Question

我有一个代码可以在激活键盘时移动一组控件。但我只希望它运行当键盘覆盖激活键盘的控件时。我正在使用下面的代码，但它无法正确确定控件何时被键盘隐藏。

堆栈脚本

lStackSize,lStackHeight
global gBottom

on openstack

   set the fullscreenmode of me to "exactFit" 
   put the loc of group "controls" into lStackLoc
   put the effective working screenRect into lStackSize
   put item 4 of lStackSize - item 2 of lStackSize  into lStackHeight

end openstack

-------------------------------

on keyboardactivated

   answer "control bottom" && gbottom

   put the effective working screenRect into tStackSize
   set itemdel to comma
   put item 4 of tStackSize - item 2 of tStackSize  into tStackHeight

    answer "tStackHeight" && tStackHeight & return & "gbottom" && gBottom

    if gbottom<tStackHeight then

       answer "control Visible"

    else 

        answer"control Hidden"
        put gbottom - tStackHeight into tYMove
        put item 2 of lStackLoc - tYMove into tNewLocY
        put item 1 of lStackLoc & "," & tNewLocY into tStackLoc
        move group "controls"  to tStackLoc 

    end if


end keyboardactivated

---------------------------

on keyboardDeactivated

   move group "controls"  to lStackLoc

end keyboardDeactivated

控制脚本

global gBottom

on openfield

  put  the bottom of me into gBottom

end openfield

Answer 1

有效screenRect是指屏幕上实际可用的矩形（可见的屏幕上真正被应用使用的部分）。工作 screenRect 是屏幕的一部分，例如没有被使用。状态栏。

put the effective working screenRect into myRect
if the topleft of control x is not within myRect \
 or the bottomright of control x is not within myRect then
   // control x is outside the visible part of the window
end if

The working screenRect 可能就足够了，但文档在讨论 effective

时特别提到了键盘

如何查找键盘是否覆盖控件

How to find if the keyboard is covering a control

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