如何检查XFCE中的任何窗口是否最大化？

Question

I want to change top panel color and alpha when any window is maximized. For now I have something like this:

#!/bin/bash
while [ 1 = 1 ]
do
    if window_is_maximized
    then
        xfconf-query -c xfce4-panel -p /panels/panel-0/background-alpha -s 100
    else
        xfconf-query -c xfce4-panel -p /panels/panel-0/background-alpha -s 50
    fi
done

Answer 1

Maximized windows in X do not have a special state that you can test reliably. From a script, you can use xwininfo :

• You can check if the window happens to be the same size as the root (main) window, and its position is the upper-left corner.
• If you happen to be using a window manager which supports certain EMWH properties ( _NET_WM_STATE_FULLSCREEN , _NET_WM_STATE_MAXIMIZED_VERT , _NET_WM_STATE_MAXIMIZED_HORZ ), your script could check for those. But in a quick check for window managers which might do that, I found none.