Klaus Schmidinger wrote: > On 06/16/07 16:29, Anssi Hannula wrote: >> Klaus Schmidinger wrote: >>> On 06/15/07 18:07, Anssi Hannula wrote: >>>> Klaus Schmidinger wrote: >>>>> On 06/10/07 17:53, Anssi Hannula wrote: >>>>>> ... >>>>>> Alternatively, you could use the fontconfig library [1] for managing >>>>>> fonts. This would also allow using using the system default fonts via >>>>>> aliases like 'sans-serif' etc, and using a font list instead of having >>>>>> to manually write the font filename via OSD. >>>>>> >>>>>> You can get a quick idea from looking at the patch which added >>>>>> fontconfig support for mplayer [2], though of course you should look in >>>>>> fontconfig documentation instead of copying conventions from mplayer :) >>>>>> >>>>>> [1] http://fontconfig.org/ >>>>>> [2] >>>>>> http://lists.mplayerhq.hu/pipermail/mplayer-dev-eng/2003-November/022218.html >>>>> When I do >>>>> >>>>> const char *font_name = "sans-serif"; >>>>> FcInit(); >>>>> FcPattern *fc_pattern = FcNameParse((FcChar8 *)font_name); >>>> While fontconfig is usually configured to ignore bitmap fonts anyway, I >>>> think you should enforce that by putting this call here: >>>> FcPatternAddBool(fc_pattern, FC_SCALABLE, FcTrue); >>> Thanks. >> Actually, I was wrong here. This won't guarantee anything, as the >> preference priorities of parameters is predefined, and the family name >> and, apparently, various other parameters (which are actually left at >> their defaults) are given a priority over the font being scalable. I was >> hit with this when trying to select FC_FAMILY "Utopia", and it kept >> returning the non-scalable version, even though a scalable version with >> the same name is available. >> >> Solution is given here: >> http://lists.freedesktop.org/archives/fontconfig/2006-March/002165.html >> >> So it is doable, but you have to use FcFontSort() ( >> http://www.xemacs.org/Documentation/packages/html/fontconfig_3.html#SEC20 >> ), which returns a similar FcFontSet as the FcFontList() which is used >> for the font listing, but this time the fonts are ordered according to >> the closeness of match, allowing you to pick the first font with >> FC_SCALABLE being true. >> >> [...] >> >> I don't know if you have noticed / thought of these already, but few tips: >> - For the fixed-size font list, you can use a match of FC_SPACING being >> FC_MONO so that non-monospace fonts are not listed. >> - Have a "default" (or "system default") font setting in the font list, >> which causes VDR to use the default aliases instead of user-specified font > > Since you're apparently getting more and more familiar with this, > maybe you could provide a complete code sequence that does this: > > - list all available fonts, as in "Arial", "Verdana", "Times New Roman", ... > > - optionally list only monospaced fonts > > - make sure there are only scalable fonts (i.e. ones that freetype can use) > > - if possible, give information on whether a particular font is available > as "bold" and/or "italic This function prints all the fonts in a format which can be fed back to FcNameParse(). AFAICS you only need slant+weight or style, use which one you prefer. int printfonts(bool only_monospace, bool slant_and_weight_instead_of_style) { FcInit(); FcObjectSet *os; if (slant_and_weight_instead_of_style) os = FcObjectSetBuild(FC_FAMILY, FC_SLANT, FC_WEIGHT, NULL); else os = FcObjectSetBuild(FC_FAMILY, FC_STYLE, NULL); FcPattern *pat = FcPatternCreate(); FcPatternAddBool(pat, FC_SCALABLE, FcTrue); if (only_monospace) FcPatternAddInteger(pat, FC_SPACING, FC_MONO); FcFontSet* fontset = FcFontList(NULL, pat, os); FcObjectSetDestroy(os); FcPatternDestroy(pat); for (int i = 0; i < fontset->nfont ; i++) { printf("%s\n", FcNameUnparse(fontset->fonts[i])); } FcFontSetDestroy(fontset); FcFini(); } Here's a function that prints the font name when inputted with a string outputted by printfonts(), or NULL if not found: void getfontfilename(char* identifier, char **filename) { FcPattern *pat = FcNameParse((FcChar8*)identifier); FcPatternAddBool(pat, FC_SCALABLE, FcTrue); FcConfigSubstitute(NULL, pat, FcMatchPattern); FcDefaultSubstitute(pat); FcFontSet* fontset = FcFontSort(NULL, pat, FcFalse, NULL, NULL); FcPatternDestroy(pat); FcBool scalable; *filename = NULL; for (int i = 0; i < fontset->nfont; i++) { FcPatternGetBool(fontset->fonts[i], FC_SCALABLE, 0, &scalable); if (scalable) { FcPatternGetString(fontset->fonts[i], FC_FILE, 0, (FcChar8**)filename); break; } } FcFontSetDestroy(fontset); } > > From the setup menu I'd like to be able to call a function that delivers > a list of font names (much like it's currently done with the actual font > file names) that looks like > > Arial > Arial:bold > Arial:italic > Arial:bold:italic > Verdana > Verdana:bold > Verdana:italic > ... > > I would prepend that list with > > sans-serif:bold > sans-serif > courier:bold Probably monospace:bold instead of courier:bold. > for the three default fonts. > > Finally, such a string should be useable to select an actual font file. -- Anssi Hannula _______________________________________________ vdr mailing list vdr@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
