Software :: Using SCROT To Capture Portion Of Window?

Scrot supports capturing a portion of the screen by allowing the user to use the -s option. I need to use the command line.

So I installed xdotool to allow me from the command line to move my mouse, click buttons, type text, select my focus, etc...

I also built a bash script that uses scrot and xdotool that allows me to select the window that has a firefox web page displayed. Then I can position the mouse and do a right button click to position to a data entry box on the web page. Then I can use xdotool type "my text" to input the text into the input box. All this works very neatly.

My problem is the following:

The command "xdotool mousemove x y" does not move relative to the top left hand corner of the focused window. The command moves to the absolute x y screen location, not the relative window location.

This happens even though I use the command "xdotool windowfocus windowid" or command "xdotool windowactivate windowid" to specify which window I want to use (want in focus).

Does anybody know how to specify that the "xdotool mousemove x y" is to move relative to the upper left hand corner of the currently in focus window?

By the way, here is my bash script:

#!/bin/bash
# get window id
WIN_ID=`xdotool search --title MyWindow`
# activate window with title MyWindow

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