isa/gnome-shell
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

St: Fix blur radius computation to correspond to current CSS draft

Browse Source 
The next draft of the CSS Backgrounds and Borders module will actually
define when the blur radius means. Fix our code to use that definition
(2 * standard deviation) rather than using the 1.9 * that we extracted
from what Mozilla was doing.

https://bugzilla.gnome.org/show_bug.cgi?id=632506
This commit is contained in:
Owen W. Taylor 2010-10-18 17:30:52 -04:00
parent 5437629e89
commit 281b2e9b0e
1 changed files with 6 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
src/st/st-private.c
View File

@ -435,11 +435,12 @@ blur_pixels (guchar *pixels_in,
guchar *pixels_out; guchar *pixels_out;
float sigma; float sigma;
/* we use an approximation of the sigma - blur radius relationship used /* The CSS specification defines (or will define) the blur radius as twice
in Firefox for doing SVG blurs; see * the Gaussian standard deviation. See:
http://mxr.mozilla.org/mozilla-central/source/gfx/thebes/src/gfxBlur.cpp#280 *
* http://lists.w3.org/Archives/Public/www-style/2010Sep/0002.html
*/ */
sigma = blur / 1.9; sigma = blur / 2.;
if ((guint) blur == 0) if ((guint) blur == 0)
{ {