I forgot to join a small piece of code to reproduce the problem.
Compile command :
gcc -g -Wall -O2 -I/usr/include/X11 -I/usr/include/X11/Xft
-I/usr/include/freetype2 -I /usr/include/fontconfig xftfontopenname.c -o
xftfontopenname -lX11 -lXft -lfontconfig
Le 11/09/2019 à 16:13, Lucien Gentis a écrit :
Hello,
XftFontOpenName function returns a XftFont structure that contains an
FcPattern.
Since 2.13.1-2 version of libxft, FC_WEIGHT property of this FcPattern
has type FcTypeDouble instead of FcTypeInteger as expected in
/usr/include/fontconfig/fontconfig.h and it was the case with 2.13.1-1
version.
I don't know if it's a bug or expected behavior.
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#include <stdio.h>
#include <stdlib.h>
#include <X11/Xft/Xft.h>
#include <Xlib.h>
#include <fontconfig.h>
int main(void) {
Display * display;
int screen;
XftFont * font;
FcValue fcValue;
display=XOpenDisplay(NULL);
screen = DefaultScreen (display);
const char * newFont="Liberation Sans:weight=bold:slant=italic";
printf("Opening font \"Liberation Sans:weight=bold:slant=italic\"\n");
font=XftFontOpenName(display,screen,newFont);
printf("Extracting font weight via command \"FcPatternGet(font->pattern,FC_WEIGHT,0,&fcValue);\"\n");
printf("fontconfig expects an integer value in fcValue.u.i, but weight property contains a double value in fcValue.u.d\n");
FcPatternGet(font->pattern,FC_WEIGHT,0,&fcValue);
printf("font weight integer fcValue.u.i : %d - that means \"thin\"\n",fcValue.u.i);
printf("font weight double fcValue.u.d : %f - whose integer value %d means \"bold\"\n",fcValue.u.d,(int)(fcValue.u.d));
}
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