pointf textspan_size(GVC_t *gvc, textspan_t * span)
{
char **fpp = NULL, *fontpath = NULL;
textfont_t *font;
assert(span->font);
font = span->font;
assert(font->name);
/* only need to find alias once per font, since they are unique in dict */
if (! font->postscript_alias)
font->postscript_alias = translate_postscript_fontname(font->name);
if (Verbose && emit_once(font->name))
fpp = &fontpath;
if (! gvtextlayout(gvc, span, fpp))
estimate_textspan_size(span, fpp);
if (fpp) {
if (fontpath)
fprintf(stderr, "fontname: \"%s\" resolved to: %s\n",
font->name, fontpath);
else
fprintf(stderr, "fontname: unable to resolve \"%s\"\n", font->name);
}
return span->size;
}
/* estimate_textsize:
* Estimate width of text, for given face and size, in points.
* Value is stored textline->width.
* NOTE: Tables are based on a font of size 1. Need to multiply by
* fontsize to get appropriate value.
*/
static void
estimate_textsize(textline_t * textline, char *fontname, double fontsz,
char **fontpath)
{
double *Fontwidth;
char c, *p;
textline->width = 0.0;
textline->xshow = NULL;
#if !defined(DISABLE_CODEGENS) && !defined(HAVE_GD_FREETYPE) && !defined(ONLY_PLAIN_GEN) //maks
if (Output_codegen == &GD_CodeGen) {
int cwidth;
double fsize = (fontsz * _dpi) / POINTS_PER_INCH; /* in pixels */
*fontpath = "[internal gd]";
cwidth = builtinFontWd(fsize);
if ((p = textline->str)) {
textline->width = strlen(p) * cwidth * POINTS_PER_INCH / _dpi;
}
return;
} else if (!strncasecmp(fontname, "cour", 4)) {
#else
if (!strncasecmp(fontname, "cour", 4)) {
#endif
*fontpath = "[internal courier]";
Fontwidth = courFontWidth;
} else if (!strncasecmp(fontname, "arial", 5)
|| !strncasecmp(fontname, "helvetica", 9)) {
*fontpath = "[internal arial]";
Fontwidth = arialFontWidth;
} else {
*fontpath = "[internal times]";
Fontwidth = timesFontWidth;
}
if ((p = textline->str)) {
while ((c = *p++))
textline->width += Fontwidth[(unsigned char) c];
textline->width *= fontsz;
}
}
#endif
double textwidth(textline_t * textline, char *fontname, double fontsize)
{
char *fontpath = NULL;
int freeFontpath = 0;
#ifdef CAIRO_HAS_FT_FONT
cairo_t *cr;
cairo_text_extents_t extents;
cr = cairo_create();
cairo_select_font(cr, fontname, 0, 0);
cairo_scale_font(cr, fontsize);
cairo_text_extents(cr, textline->str, &extents);
cairo_destroy(cr);
textline->width = extents.width;
textline->xshow = NULL;
fontpath = "[cairo]";
#else
if (gd_textsize(textline, fontname, fontsize, &fontpath))
estimate_textsize(textline, fontname, fontsize, &fontpath);
else
freeFontpath = 1; /* libgd mallocs space for fontpath */
#endif
if (Verbose) {
if (emit_once(fontname)) {
fprintf(stderr, "%s: fontname=%s fontpath=%s\n", CmdName,
fontname, fontpath);
}
}
if (freeFontpath) free (fontpath);
return textline->width;
}
