Re: [XForms] pre-release xforms-1.3.12

[oleuthold]

Hi Jens,
      I think there is a problem with slot 16 of the X11 font array: ( 
fl_set_font_name(16,"blah"). When selecting such a font on the browser 
of the modified demo/fonts.c (attached), the application seg faults. 
Slot 17 is fine. If slot 16 is a non-existing font, and slot 17 exists, 
then slot 17 seg faults.
You can replace the original demo/fonts.c with the attached version and 
recompile the library to create the error.
(If you do not have "misc-fixed-medium-r-semicondensed" on your system, 
you need to replace the line with the name of another font which exists 
[flag=0]).

The DejaVu Sans condensed produces shorter labels, which are very 
similar to Helvetica.

You are right about the flag; the flag fl_set_font_name for X11 fonts 
reports correctly whether the font exists (see example above), but the 
flag for fl_set_xft_font_name is indeed useless.
I might have to resort to something like
        char test[300];
        sprintf(test,"fc-list|grep -q '%s'",fontname);
        if(system(test)==0) printf("%s font found\n",fontname);
        else printf("font NOT found\n");
to find out whether the font exists, or whether another one should be 
tried, or suggest installing the correct font for best user experience.
Regards
        Oskar


On 06/29/2014 09:00 AM, address@hidden wrote:
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> Today's Topics:
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>     1. New releas xforms-1.2.4 (Jens Thoms Toerring)
>     2. Re: pre-release xforms-1.3.12 (address@hidden)
>     3. Re: pre-release xforms-1.3.12 (Jens Thoms Toerring)
>
>
>
> On Sat, Jun 28, 2014 at 04:28:59PM -0700,address@hidden  wrote:
> >        I think that the functions
> >
> >         void fl_set_global_font_scaling(double scale); and
> >         void fl_set_font_scaling_factor(int    index, double factor);
> >
> > are missing in the forms.h header file.
> Thank you, I indeed forgot to add them! Just uploaded a corrected 
> version of xforms-1.3.12.tar.gz (and, of course, to the git repo- 
> sitory).
> > The function int fl_set_xft_font_name(int index, const char * name,
> >                             int slant, int weight);
> > works as expected. This will allow me to use the condensed font, and
> > check whether the font is available on the system.
> Fine;-) But the question remains if using the condensed fonts per 
> default would be better if they deviate less from the old fonts? BTW, 
> how do you want to use that function to check if a font is available? 
> I haven't yet found a way to do that at all since the Xft function 
> called for loading a font always suc- ceeds, even if you pass it some 
> font name that definitely does not exist - it always gives you a font. 
> Nice for me since I don't have to care about finding a replacement 
> font myself, but it would also be nice to have some indication what 
> actually got loaded (I haven't found out yet if and how one might use 
> the 'pattern' member of the XftFont structure, the real font name may 
> be stored in there somewhere...). Best regards, Jens

fonts.c
Description: Text Data