nixpkgs/pkgs/applications/misc/rxvt_unicode/rxvt-unicode-9.06-font-width.patch
Thomas Tuegel 4424edccf4 rxvt-unicode: calculate font width correctly
It is (fairly) well known among rxvt-unicode users that its method of
calculating the width of Xft fonts is not correct. This is the Gentoo
version of the patch which corrects the problem.
2014-02-05 21:19:57 +00:00

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787 B
Diff

--- a/src/rxvtfont.C 2008-07-09 12:21:45.000000000 +0400
+++ b/src/rxvtfont.C 2009-10-30 14:32:53.000000000 +0300
@@ -1195,12 +1195,14 @@
XGlyphInfo g;
XftTextExtents16 (disp, f, &ch, 1, &g);
- g.width -= g.x;
-
+/*
+ * bukind: don't use g.width as a width of a character!
+ * instead use g.xOff, see e.g.: http://keithp.com/~keithp/render/Xft.tutorial
+ */
int wcw = WCWIDTH (ch);
- if (wcw > 0) g.width = (g.width + wcw - 1) / wcw;
+ if (wcw > 1) g.xOff = g.xOff / wcw;
+ if (width < g.xOff) width = g.xOff;
- if (width < g.width ) width = g.width;
if (height < g.height ) height = g.height;
if (glheight < g.height - g.y) glheight = g.height - g.y;
}