overview- 1) copy exsisting theme 2)rename it 3)modify bg.png and screen.jpg 4) rename .xml file, 5) modify .desktop file 6) compress folder 7) install it
logoff to see the effect. 1) Make a directory / folder under Home: $ mkdir mdmtheme
2)Goto the location /usr/share/mdm/themes and copy Arc-Noble
(note: you can copy any one)
3)past under your mdmtheme folder
4) Rename the Arc-Noble as my-theme
5) open my-theme (you will see few image file , one xml and a .desktop file)
6) you delete bg.png and screen.jpg
7)
a) past your image under this dir,
b) open it with a image ediror.
c) save as it as bg.png and screen.jpg
8)OPEN screen.jpg , main_box.png, text.png with GIMP [you may skip]
9) main_box.png, text.png use tool to copy and past on screen.jpg and save screen.jpg only. [you may skip]
(you can modify other image also)
10) Now rename Arc-GDM.xml as my-GDM.xml.
11) open GdmGreeterTheme.desktop
a) open gedit / other editor
b) then open GdmGreeterTheme.desktop
(Or $ gedit GdmGreeterTheme.desktop)
GdmGreeterTheme.desktop
[GdmGreeterTheme]
Encoding=UTF-8
Greeter=Arc-GDM.xml
Name=Arc-Noble
Description=Smooth looking login screen
Author=perfectska04, Daniel Fore.
Copyright=GPL
Screenshot=screen.jpg
Now change it
[GdmGreeterTheme]
Encoding=UTF-8
Greeter=my-GDM.xml
Name=my-theme
Description=Smooth looking login screen
Author=your name.
Copyright=GPL
Screenshot=screen.jpg
c) then Save
(don't use save As and after save check the file type .desktop only not .desktop.desktop)
12) compress my-theme folder as my-theme.tar.gz
(right click on folder then select compress from manu)
13) Install theme
a) open terminal and copy past
$ sudo mdmsetup
(enter root password)
(alt:- menu -> preference -> login window)
b)select local-> add -> file system-> home -> user name
(select the path where my-theme.tar.gz locate )
c) select my-theme.tar.gz and click install
14) Now you will see my -theme in the list below you select it.
15)see effect logoff your system.
thanks