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Date:      Sat, 11 Jan 2014 08:47:26 GMT
From:      clutton <clutton@zoho.com>
To:        freebsd-gnats-submit@FreeBSD.org
Subject:   ports/185656: A x11/rxvt-unicode [PATCH] for the font width bug.
Message-ID:  <201401110847.s0B8lQNS094293@oldred.freebsd.org>
Resent-Message-ID: <201401110850.s0B8o0HC067296@freefall.freebsd.org>

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>Number:         185656
>Category:       ports
>Synopsis:       A x11/rxvt-unicode [PATCH] for the font width bug.
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          update
>Submitter-Id:   current-users
>Arrival-Date:   Sat Jan 11 08:50:00 UTC 2014
>Closed-Date:
>Last-Modified:
>Originator:     clutton
>Release:        
>Organization:
>Environment:
>Description:
A lot of fancy fonts like «monaco», «PragmataPro» wouldn't display correctly without this patch. And you'll see enormously large «approche».

http://i1.someimage.com/I5wLFQb.png
>How-To-Repeat:

>Fix:


Patch attached with submission follows:

diff --git a/x11/rxvt-unicode/files/patch-src_rxvtfont.C b/x11/rxvt-unicode/files/patch-src_rxvtfont.C
new file mode 100644
index 0000000..83cbbfc
--- /dev/null
+++ b/x11/rxvt-unicode/files/patch-src_rxvtfont.C
@@ -0,0 +1,47 @@
+--- src/rxvtfont.C	2013-03-27 18:59:20.000000000 +0200
++++ /tmp/rxvtfont.C	2014-01-11 10:11:32.000000000 +0200
+@@ -1237,11 +1237,22 @@
+
+       FT_Face face = XftLockFace (f);
+
++/*
++ * use ascent, descent and height from XftFont *f instead of FT_Face face.
++ * this somehow reproduces the behaviour of the line height as seen on xterm.
++
+       ascent  = (face->size->metrics.ascender + 63) >> 6;
+       descent = (-face->size->metrics.descender + 63) >> 6;
+       height  = max (ascent + descent, (face->size->metrics.height + 63) >> 6);
+       width   = 0;
+
++ */
++
++      ascent  = f->ascent;
++      descent = f->descent;
++      height  = max (ascent + descent, f->height);
++      width   = 0;
++
+       bool scalable = face->face_flags & FT_FACE_FLAG_SCALABLE;
+
+       XftUnlockFace (f);
+@@ -1265,12 +1276,21 @@
+           XGlyphInfo g;
+           XftTextExtents16 (disp, f, &ch, 1, &g);
+
++/*
++ * 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
++
+           g.width -= g.x;
+
+           int wcw = WCWIDTH (ch);
+           if (wcw > 0) g.width = (g.width + wcw - 1) / wcw;
+
+           if (width    < g.width       ) width    = g.width;
++ */
++          int wcw = WCWIDTH (ch);
++          if (wcw > 1) g.xOff = g.xOff / wcw;
++          if (width < g.xOff) width = g.xOff;
++
+           if (height   < g.height      ) height   = g.height;
+           if (glheight < g.height - g.y) glheight = g.height - g.y;
+         }


>Release-Note:
>Audit-Trail:
>Unformatted:



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