GNOME Bugzilla – Bug 503075
Setting the magfactor shouldn't "blank out" the screen
Last modified: 2007-12-27 18:42:06 UTC
Being able to dynamically zoom in and out while viewing screen contents is helpful. Clients can give users this functionality through keyboard shortcuts and "mouse wheel zooming" and allow the user to establish the best level of magnification via controls (sliders, spin buttons) in preferences dialogs. When using setMagFactor() to achieve this functionality, gnome-mag briefly "blanks out" the screen. In other words, the user sees the original view, a flash of white, then the magnified view. It would be helpful if this blanking out of the screen can be avoided. Thanks!
We have just added a bunch of support for gnome-mag features into Orca. While it's still "rough around the edges" with support for more features still in the works, I think it's a good start. Anyhoo.... The reason I bring this up is that you can now witness the "blanking" first hand if you grab Orca from svn trunk. :-) Steps to reproduce: 1. Press Insert+Space to get into Orca Preferences. 2. Give focus to the scale factor spin button. 3. Press Up/Down (or Page Up/Page Down) to change the magnification level. Expected results: The screen wouldn't blank out for each change Actual results: The screen does blank out for each change. It's more pronounced/longer at lower levels of magnification. If this is not a gnome-mag bug but an Orca bug, feel free to reassign it. But, if so, hints as to how to fix it would be most appreciated. :-) Thanks!!
Created attachment 101411 [details] [review] solves the problem
Indeed it does! Just tested on both a machine with composite and one without (tri-head box). Works like a charm. Thanks!!