anubis@skinfaxe.diku.dk (Steen Linden) (07/14/89)
When trying to use characters with ASCII codes greater than 127, XTextWidth returns zero. The specific problem is that I am trying to get letters like Aring from the Adobe fonts to work in xpaint but both XDrawString and XTextWidth can't handle characters with ASCII codes greater than 127. Shouldn't these functions be able to handle characters from firstCol and NumCols ahead like specified in the function GetGlyphs in XTextExt.c of the Xlib code ? In my case firstCol is 32 and NumCols 224 giving the maximum character code 255. I can hack xpaint to output Aring by casting the characters returned by XLookupString to unsigned char. Unfortunately I can't make XTextWidth return the right width unless I hack the function GetCS in XTextExt.c to work on unsigned chars as well. It is the first line that needs to be changed to "c = (unsigned char) chars[ind] - firstCol". The problem that "chars[ind]" are sign extended when operated upon as an int. In case is is of any interest I am using X11R3. The server is a qvss server running on a VAXStation2000 with MORE/bsd from Mt. Xinu and is compiled with the native cc. xpaint is running on a Sun4 with SunOS 4.0 and is compiled with gcc-1.34. Xlib is compiled as a shared library with gcc-1.34. --Steen Steen Linden (anubis@diku.dk) | It's all absolutely devastatingly true - The Computer Department | except the bits that are lies. DIKU, U. of Copenhagen | Douglas Adams: Denmark | The Hitchhikers Guide to the Galaxy.
rws@EXPO.LCS.MIT.EDU (07/25/89)
When trying to use characters with ASCII codes greater than 127,
XTextWidth returns zero.
Yup, the R3 version is buggy for character codes > 127.net@TUB.BITNET (Oliver Laumann) (07/25/89)
> When trying to use characters with ASCII codes greater than 127, > XTextWidth returns zero. The function GetCS() in lib/X/XTextExt.c is broken. I have already reported this some months ago. You can easily write your own text width function by adding the widths found in the XCharStructs of the font you are using. -- Oliver Laumann net@TUB.BITNET net@tub.UUCP