Hi, I am colorblind. This problem doesn't cause much trouble, so it's not something that really makes the computer useless without an accessibility software. It would be better if everyone could take that into consideration before drawing a chart, but unfortunally that isn't always true. Sometimes a chart uses brown-green, purple-blue combinations which are just useless for my type of colorblindness.
Here is my plan so far: 1) Create a library with a set of predefined color filters usefull for colorblinds, for instance: * selective red saturation: This would take colors where red is one of the dominants (except gray) and would saturate it to the maximum. So people with problem in the red cones can differentiate brown from red and purple from blue. Example: #555500 becomes #FF5500. * selective red dessaturation: This is the inverse of the above. Example: #555500 becomes #005500. * Hue shift This would displace the hue, preserving saturation and value. Example: #555500 becomes #005555. * monocrome This would take a base color and turn all the others to greyscale. 2) Integrate it with the desktop in a way that I press a keystroke and activate my default filter with the default settings. Or use a window button (at the side of minimize, for instance) to get to a filters menu where I can activate any other filter at any time in any window. This way, when seeing a chart with dubious colors I could just press the keystroke to read the chart and then press the keystroke again to continue using the software (or continue to using it with the filter active). 3) Have a accessibility configuration which would perform the ishihara test for those who doesn't know which time of colorblindness they have indicating what filter would be the most usefull in most cases (for example, the selective red saturation for mine colorblindness but probably selective green saturation for other type and so on). Here is what I did so far: For now I have the base library (still not in some public place just because I still didn't found one. But the license will be public domain.). I already have 3 functional filters. The library is being developed in C using test-driven-development. And the basic idea is that it takes a xlib XColor compatible pointer, see if it needs to be changed and then change it returning if the color has or has not been changed. So, what do others think about the idea? Which is the better way to integrate this into metacity and gnome? I was thinking composite management could help, but I'm not sure. Well, this is just a kick-off. If someone could offer some place to host the sources, nice (I just didn't want to start yet another project in sourceforge...) Thanks in advance, Daniel Ruoso P.S.: Please include-me in replies, I'm not subscribed. _______________________________________________ gnome-accessibility-list mailing list gnome-accessibility-list@gnome.org http://mail.gnome.org/mailman/listinfo/gnome-accessibility-list
