/**
* cairo_quartz_font_face_create_for_cgfont
* @font: a #CGFontRef obtained through a method external to cairo.
*
* Creates a new font for the Quartz font backend based on a
* #CGFontRef. This font can then be used with
* cairo_set_font_face() or cairo_scaled_font_create().
*
* Return value: a newly created #cairo_font_face_t. Free with
* cairo_font_face_destroy() when you are done using it.
*
* Since: 1.6
*/
cairo_font_face_t *
cairo_quartz_font_face_create_for_cgfont (CGFontRef font)
{
cairo_quartz_font_face_t *font_face;
quartz_font_ensure_symbols();
font_face = malloc (sizeof (cairo_quartz_font_face_t));
if (!font_face) {
cairo_status_t ignore_status;
ignore_status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
return (cairo_font_face_t *)&_cairo_font_face_nil;
}
font_face->cgFont = CGFontRetain (font);
if (CTFontCreateWithGraphicsFontPtr) {
font_face->ctFont = CTFontCreateWithGraphicsFontPtr (font, 1.0, NULL, NULL);
} else {
font_face->ctFont = NULL;
}
_cairo_font_face_init (&font_face->base, &_cairo_quartz_font_face_backend);
return &font_face->base;
}
/**
* cairo_quartz_font_face_create_for_cgfont
* @font: a #CGFontRef obtained through a method external to cairo.
*
* Creates a new font for the Quartz font backend based on a
* #CGFontRef. This font can then be used with
* cairo_set_font_face() or cairo_scaled_font_create().
*
* Return value: a newly created #cairo_font_face_t. Free with
* cairo_font_face_destroy() when you are done using it.
*
* Since: 1.6
*/
cairo_font_face_t *
cairo_quartz_font_face_create_for_cgfont (CGFontRef font)
{
cairo_quartz_font_face_t *font_face;
quartz_font_ensure_symbols();
font_face = malloc (sizeof (cairo_quartz_font_face_t));
if (!font_face) {
_cairo_error (CAIRO_STATUS_NO_MEMORY);
return (cairo_font_face_t *)&_cairo_font_face_nil;
}
font_face->cgFont = CGFontRetain (font);
_cairo_font_face_init (&font_face->base, &_cairo_quartz_font_face_backend);
return &font_face->base;
}
/**
* cairo_quartz_font_face_create_for_atsu_font_id:
* @font_id: an ATSUFontID for the font.
*
* Creates a new font for the Quartz font backend based on an
* #ATSUFontID. This font can then be used with
* cairo_set_font_face() or cairo_scaled_font_create().
*
* Return value: a newly created #cairo_font_face_t. Free with
* cairo_font_face_destroy() when you are done using it.
*
* Since: 1.6
**/
cairo_font_face_t *
cairo_quartz_font_face_create_for_atsu_font_id (ATSUFontID font_id)
{
quartz_font_ensure_symbols();
if (FMGetATSFontRefFromFontPtr != NULL) {
ATSFontRef atsFont = FMGetATSFontRefFromFontPtr (font_id);
CGFontRef cgFont = CGFontCreateWithPlatformFont (&atsFont);
cairo_font_face_t *ff;
ff = cairo_quartz_font_face_create_for_cgfont (cgFont);
CGFontRelease (cgFont);
return ff;
} else {
_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
return (cairo_font_face_t *)&_cairo_font_face_nil;
}
}
static cairo_status_t
_cairo_quartz_font_face_scaled_font_create (void *abstract_face,
const cairo_matrix_t *font_matrix,
const cairo_matrix_t *ctm,
const cairo_font_options_t *options,
cairo_scaled_font_t **font_out)
{
cairo_quartz_font_face_t *font_face = abstract_face;
cairo_quartz_scaled_font_t *font = NULL;
cairo_status_t status;
cairo_font_extents_t fs_metrics;
double ems;
CGRect bbox;
quartz_font_ensure_symbols();
if (!_cairo_quartz_font_symbols_present)
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
font = malloc(sizeof(cairo_quartz_scaled_font_t));
if (font == NULL)
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
memset (font, 0, sizeof(cairo_quartz_scaled_font_t));
status = _cairo_scaled_font_init (&font->base,
&font_face->base, font_matrix, ctm, options,
&_cairo_quartz_scaled_font_backend);
if (status)
goto FINISH;
ems = CGFontGetUnitsPerEmPtr (font_face->cgFont);
/* initialize metrics */
if (CGFontGetFontBBoxPtr && CGFontGetAscentPtr) {
fs_metrics.ascent = (CGFontGetAscentPtr (font_face->cgFont) / ems);
fs_metrics.descent = - (CGFontGetDescentPtr (font_face->cgFont) / ems);
fs_metrics.height = fs_metrics.ascent + fs_metrics.descent +
(CGFontGetLeadingPtr (font_face->cgFont) / ems);
bbox = CGFontGetFontBBoxPtr (font_face->cgFont);
fs_metrics.max_x_advance = CGRectGetMaxX(bbox) / ems;
fs_metrics.max_y_advance = 0.0;
} else {
CGGlyph wGlyph;
UniChar u;
quartz_CGFontMetrics *m;
m = CGFontGetHMetricsPtr (font_face->cgFont);
/* On OX 10.4, GetHMetricsPtr sometimes returns NULL for unknown reasons */
if (!m) {
status = _cairo_error(CAIRO_STATUS_NULL_POINTER);
goto FINISH;
}
fs_metrics.ascent = (m->ascent / ems);
fs_metrics.descent = - (m->descent / ems);
fs_metrics.height = fs_metrics.ascent + fs_metrics.descent + (m->leading / ems);
/* We kind of have to guess here; W's big, right? */
u = (UniChar) 'W';
CGFontGetGlyphsForUnicharsPtr (font_face->cgFont, &u, &wGlyph, 1);
if (wGlyph && CGFontGetGlyphBBoxesPtr (font_face->cgFont, &wGlyph, 1, &bbox)) {
fs_metrics.max_x_advance = CGRectGetMaxX(bbox) / ems;
fs_metrics.max_y_advance = 0.0;
} else {
fs_metrics.max_x_advance = 0.0;
fs_metrics.max_y_advance = 0.0;
}
}
status = _cairo_scaled_font_set_metrics (&font->base, &fs_metrics);
FINISH:
if (status != CAIRO_STATUS_SUCCESS) {
free (font);
} else {
*font_out = (cairo_scaled_font_t*) font;
}
return status;
}
static cairo_status_t
_cairo_quartz_font_face_create_for_toy (cairo_toy_font_face_t *toy_face,
cairo_font_face_t **font_face)
{
const char *family;
char *full_name;
CFStringRef cgFontName = NULL;
CGFontRef cgFont = NULL;
int loop;
quartz_font_ensure_symbols();
if (! _cairo_quartz_font_symbols_present)
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
family = toy_face->family;
full_name = malloc (strlen (family) + 64); // give us a bit of room to tack on Bold, Oblique, etc.
/* handle CSS-ish faces */
if (!strcmp(family, "serif") || !strcmp(family, "Times Roman"))
family = "Times";
else if (!strcmp(family, "sans-serif") || !strcmp(family, "sans"))
family = "Helvetica";
else if (!strcmp(family, "cursive"))
family = "Apple Chancery";
else if (!strcmp(family, "fantasy"))
family = "Papyrus";
else if (!strcmp(family, "monospace") || !strcmp(family, "mono"))
family = "Courier";
/* Try to build up the full name, e.g. "Helvetica Bold Oblique" first,
* then drop the bold, then drop the slant, then drop both.. finally
* just use "Helvetica". And if Helvetica doesn't exist, give up.
*/
for (loop = 0; loop < 5; loop++) {
if (loop == 4)
family = "Helvetica";
strcpy (full_name, family);
if (loop < 3 && (loop & 1) == 0) {
if (toy_face->weight == CAIRO_FONT_WEIGHT_BOLD)
strcat (full_name, " Bold");
}
if (loop < 3 && (loop & 2) == 0) {
if (toy_face->slant == CAIRO_FONT_SLANT_ITALIC)
strcat (full_name, " Italic");
else if (toy_face->slant == CAIRO_FONT_SLANT_OBLIQUE)
strcat (full_name, " Oblique");
}
if (CGFontCreateWithFontNamePtr) {
cgFontName = CFStringCreateWithCString (NULL, full_name, kCFStringEncodingASCII);
cgFont = CGFontCreateWithFontNamePtr (cgFontName);
CFRelease (cgFontName);
} else {
cgFont = CGFontCreateWithNamePtr (full_name);
}
if (cgFont)
break;
}
if (!cgFont) {
/* Give up */
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
*font_face = cairo_quartz_font_face_create_for_cgfont (cgFont);
CGFontRelease (cgFont);
return CAIRO_STATUS_SUCCESS;
}