[Accessibility] Sec 2b Item 6: Service API Support for Magnification

Janina Sajka janina at rednote.net
Mon Sep 8 11:48:17 PDT 2003


	6.)	Service API Support for Magnification

It should be possible to provide sophisticated magnification of one or more portions of the video display screen to users who require large (or
different) fonts and/or alternate foreground/background colors. It should be possible to magnify icons along with text. And, it should be possible to
achieve both smaller and large magnification ratios, many users with visual disabilities may need 3X, 4x, etc. magnification, but many users would also
benefit from ratios as small as 1.2% magnification.

It should be possible to achieve this feature support without requiring higher-end video
hardware with multiple frame buffering as is the case today. Also, it should be possible to maintain magnification while applications are writing to
screen.

Because of the historic networked nature of the X technology, it is not possible (nor desirable) for AT to just replace device drivers or write directly
to video hardware. creating this standard will require significant cooperation with X, GNOME, and KDE developers. There are already projects under
development among some vendors which can provide reference implementations.
-- 
	
				Janina Sajka, Director
				Technology Research and Development
				Governmental Relations Group
				American Foundation for the Blind (AFB)

Email: janina at afb.net		Phone: (202) 408-8175




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