[Qgis-developer] Brightness and contrast filters for rasters

[Alexander Bruy]

Hi all,

I've tried to implement functionality for changing raster brightness
and contrast in QGIS in addition to existing contrast enhancement
functions. Code available in my GitHub fork in "brightness_filter" branch [0].

Also, as suggested by Radim, I added readXML() and writeXML()
methods to base QgsRasterInterface class, to provide uniform way for
saving/loading filter settings.

Currently new toolbar buttons have no icons, but request for icons
already filed in OSGeo trac [1].

Any comments are welcome, I plan to merge this code into master in
next few days if there are no objections.

[0] https://github.com/alexbruy/Quantum-GIS/tree/brightness_filter
[1] http://trac.osgeo.org/osgeo/ticket/1112

-- 
Alexander Bruy