cairo-quartz-font.c [plain text]
#include "cairoint.h"
#include <dlfcn.h>
#include "cairo-quartz.h"
#include "cairo-quartz-private.h"
static CGFontRef (*CGFontCreateWithFontNamePtr) (CFStringRef) = NULL;
static CGFontRef (*CGFontCreateWithNamePtr) (const char *) = NULL;
static int (*CGFontGetUnitsPerEmPtr) (CGFontRef) = NULL;
static bool (*CGFontGetGlyphAdvancesPtr) (CGFontRef, const CGGlyph[], size_t, int[]) = NULL;
static bool (*CGFontGetGlyphBBoxesPtr) (CGFontRef, const CGGlyph[], size_t, CGRect[]) = NULL;
static CGRect (*CGFontGetFontBBoxPtr) (CGFontRef) = NULL;
static void (*CGFontGetGlyphsForUnicharsPtr) (CGFontRef, const UniChar[], const CGGlyph[], size_t) = NULL;
static CGPathRef (*CGFontGetGlyphPathPtr) (CGFontRef fontRef, CGAffineTransform *textTransform, int unknown, CGGlyph glyph) = NULL;
typedef struct {
int ascent;
int descent;
int leading;
} quartz_CGFontMetrics;
static quartz_CGFontMetrics* (*CGFontGetHMetricsPtr) (CGFontRef fontRef) = NULL;
static int (*CGFontGetAscentPtr) (CGFontRef fontRef) = NULL;
static int (*CGFontGetDescentPtr) (CGFontRef fontRef) = NULL;
static int (*CGFontGetLeadingPtr) (CGFontRef fontRef) = NULL;
static cairo_bool_t _cairo_quartz_font_symbol_lookup_done = FALSE;
static cairo_bool_t _cairo_quartz_font_symbols_present = FALSE;
static void
quartz_font_ensure_symbols(void)
{
if (_cairo_quartz_font_symbol_lookup_done)
return;
CGFontGetGlyphBBoxesPtr = dlsym(RTLD_DEFAULT, "CGFontGetGlyphBBoxes");
if (!CGFontGetGlyphBBoxesPtr)
CGFontGetGlyphBBoxesPtr = dlsym(RTLD_DEFAULT, "CGFontGetGlyphBoundingBoxes");
CGFontGetGlyphsForUnicharsPtr = dlsym(RTLD_DEFAULT, "CGFontGetGlyphsForUnichars");
if (!CGFontGetGlyphsForUnicharsPtr)
CGFontGetGlyphsForUnicharsPtr = dlsym(RTLD_DEFAULT, "CGFontGetGlyphsForUnicodes");
CGFontGetFontBBoxPtr = dlsym(RTLD_DEFAULT, "CGFontGetFontBBox");
CGFontCreateWithFontNamePtr = dlsym(RTLD_DEFAULT, "CGFontCreateWithFontName");
CGFontCreateWithNamePtr = dlsym(RTLD_DEFAULT, "CGFontCreateWithName");
CGFontGetUnitsPerEmPtr = dlsym(RTLD_DEFAULT, "CGFontGetUnitsPerEm");
CGFontGetGlyphAdvancesPtr = dlsym(RTLD_DEFAULT, "CGFontGetGlyphAdvances");
CGFontGetGlyphPathPtr = dlsym(RTLD_DEFAULT, "CGFontGetGlyphPath");
CGFontGetHMetricsPtr = dlsym(RTLD_DEFAULT, "CGFontGetHMetrics");
CGFontGetAscentPtr = dlsym(RTLD_DEFAULT, "CGFontGetAscent");
CGFontGetDescentPtr = dlsym(RTLD_DEFAULT, "CGFontGetDescent");
CGFontGetLeadingPtr = dlsym(RTLD_DEFAULT, "CGFontGetLeading");
if ((CGFontCreateWithFontNamePtr || CGFontCreateWithNamePtr) &&
CGFontGetGlyphBBoxesPtr &&
CGFontGetGlyphsForUnicharsPtr &&
CGFontGetUnitsPerEmPtr &&
CGFontGetGlyphAdvancesPtr &&
CGFontGetGlyphPathPtr &&
(CGFontGetHMetricsPtr || (CGFontGetAscentPtr && CGFontGetDescentPtr && CGFontGetLeadingPtr)))
_cairo_quartz_font_symbols_present = TRUE;
_cairo_quartz_font_symbol_lookup_done = TRUE;
}
typedef struct _cairo_quartz_font_face cairo_quartz_font_face_t;
typedef struct _cairo_quartz_scaled_font cairo_quartz_scaled_font_t;
struct _cairo_quartz_scaled_font {
cairo_scaled_font_t base;
};
struct _cairo_quartz_font_face {
cairo_font_face_t base;
CGFontRef cgFont;
};
static void
_cairo_quartz_font_face_destroy (void *abstract_face)
{
cairo_quartz_font_face_t *font_face = (cairo_quartz_font_face_t*) abstract_face;
CGFontRelease (font_face->cgFont);
}
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);
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);
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);
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 const cairo_font_face_backend_t _cairo_quartz_font_face_backend = {
CAIRO_FONT_TYPE_QUARTZ,
_cairo_quartz_font_face_destroy,
NULL,
_cairo_quartz_font_face_scaled_font_create
};
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;
}
static cairo_quartz_font_face_t *
_cairo_quartz_scaled_to_face (void *abstract_font)
{
cairo_quartz_scaled_font_t *sfont = (cairo_quartz_scaled_font_t*) abstract_font;
cairo_font_face_t *font_face = cairo_scaled_font_get_font_face (&sfont->base);
if (!font_face || font_face->backend->type != CAIRO_FONT_TYPE_QUARTZ)
return NULL;
return (cairo_quartz_font_face_t*) font_face;
}
static cairo_status_t
_cairo_quartz_font_get_implementation (cairo_toy_font_face_t *toy_face,
cairo_scaled_font_t **font_face_out)
{
static cairo_user_data_key_t impl_font_face_key;
cairo_font_face_t *face;
cairo_status_t status;
const char *family = toy_face->family;
char *full_name = malloc(strlen(family) + 64); CFStringRef cgFontName = NULL;
CGFontRef cgFont = NULL;
int loop;
face = cairo_font_face_get_user_data (&toy_face->base,
&impl_font_face_key);
if (face) {
*font_face_out = face;
return CAIRO_STATUS_SUCCESS;
}
quartz_font_ensure_symbols();
if (! _cairo_quartz_font_symbols_present)
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
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";
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) {
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
face = cairo_quartz_font_face_create_for_cgfont (cgFont);
CGFontRelease (cgFont);
if (face->status)
return face->status;
status = cairo_font_face_set_user_data (&toy_face->base,
&impl_font_face_key,
face,
(cairo_destroy_func_t) cairo_font_face_destroy);
if (status) {
cairo_font_face_destroy (face);
return status;
}
*font_face_out = face;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_quartz_font_create_toy (cairo_toy_font_face_t *toy_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_font_face_t *face;
cairo_scaled_font_t *scaled_font;
cairo_status_t status;
status = _cairo_quartz_font_get_implementation (toy_face, &face);
if (status)
return status;
status = _cairo_quartz_font_face_scaled_font_create (face,
font_matrix, ctm,
options,
&scaled_font);
cairo_font_face_destroy (face);
if (status)
return status;
*font_out = scaled_font;
return CAIRO_STATUS_SUCCESS;
}
static void
_cairo_quartz_font_fini(void *abstract_font)
{
}
#define INVALID_GLYPH 0x00
static inline CGGlyph
_cairo_quartz_scaled_glyph_index (cairo_scaled_glyph_t *scaled_glyph) {
unsigned long index = _cairo_scaled_glyph_index (scaled_glyph);
if (index > 0xffff)
return INVALID_GLYPH;
return (CGGlyph) index;
}
static inline cairo_status_t
_cairo_matrix_to_unit_quartz_matrix (const cairo_matrix_t *m, CGAffineTransform *txout,
double *xout, double *yout)
{
CGAffineTransform transform;
double xscale, yscale;
cairo_status_t status;
status = _cairo_matrix_compute_basis_scale_factors (m, &xscale, &yscale, 1);
if (status)
return status;
transform = CGAffineTransformMake (m->xx, - m->yx,
- m->xy, m->yy,
0.0f, 0.0f);
if (xout)
*xout = xscale;
if (yout)
*yout = yscale;
if (xscale)
xscale = 1.0 / xscale;
if (yscale)
yscale = 1.0 / yscale;
*txout = CGAffineTransformScale (transform, xscale, yscale);
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_quartz_init_glyph_metrics (cairo_quartz_scaled_font_t *font,
cairo_scaled_glyph_t *scaled_glyph)
{
cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
cairo_quartz_font_face_t *font_face = _cairo_quartz_scaled_to_face(font);
cairo_text_extents_t extents = {0, 0, 0, 0, 0, 0};
CGAffineTransform textMatrix;
CGGlyph glyph = _cairo_quartz_scaled_glyph_index (scaled_glyph);
int advance;
CGRect bbox;
double emscale = CGFontGetUnitsPerEmPtr (font_face->cgFont);
double xscale, yscale;
double xmin, ymin, xmax, ymax;
if (glyph == INVALID_GLYPH)
goto FAIL;
if (!CGFontGetGlyphAdvancesPtr (font_face->cgFont, &glyph, 1, &advance) ||
!CGFontGetGlyphBBoxesPtr (font_face->cgFont, &glyph, 1, &bbox))
goto FAIL;
status = _cairo_matrix_compute_basis_scale_factors (&font->base.scale,
&xscale, &yscale, 1);
if (status)
goto FAIL;
bbox = CGRectMake (bbox.origin.x / emscale,
bbox.origin.y / emscale,
bbox.size.width / emscale,
bbox.size.height / emscale);
#if 0
{
CGAffineTransform textMatrix;
textMatrix = CGAffineTransformMake (font->base.scale.xx,
-font->base.scale.yx,
-font->base.scale.xy,
font->base.scale.yy,
0.0f, 0.0f);
bbox = CGRectApplyAffineTransform (bbox, textMatrix);
bbox = CGRectIntegral (bbox);
bbox = CGRectApplyAffineTransform (bbox, CGAffineTransformInvert (textMatrix));
}
#endif
#if 0
fprintf (stderr, "[0x%04x] bbox: %f %f %f %f\n", glyph,
bbox.origin.x / emscale, bbox.origin.y / emscale,
bbox.size.width / emscale, bbox.size.height / emscale);
#endif
xmin = CGRectGetMinX(bbox);
ymin = CGRectGetMinY(bbox);
xmax = CGRectGetMaxX(bbox);
ymax = CGRectGetMaxY(bbox);
extents.x_bearing = xmin;
extents.y_bearing = - ymax;
extents.width = xmax - xmin;
extents.height = ymax - ymin;
extents.x_advance = (double) advance / emscale;
extents.y_advance = 0.0;
#if 0
fprintf (stderr, "[0x%04x] extents: bearings: %f %f dim: %f %f adv: %f\n\n", glyph,
extents.x_bearing, extents.y_bearing, extents.width, extents.height, extents.x_advance);
#endif
FAIL:
_cairo_scaled_glyph_set_metrics (scaled_glyph,
&font->base,
&extents);
return status;
}
static void
_cairo_quartz_path_apply_func (void *info, const CGPathElement *el)
{
cairo_path_fixed_t *path = (cairo_path_fixed_t *) info;
switch (el->type) {
case kCGPathElementMoveToPoint:
_cairo_path_fixed_move_to (path,
_cairo_fixed_from_double(el->points[0].x),
_cairo_fixed_from_double(el->points[0].y));
break;
case kCGPathElementAddLineToPoint:
_cairo_path_fixed_line_to (path,
_cairo_fixed_from_double(el->points[0].x),
_cairo_fixed_from_double(el->points[0].y));
break;
case kCGPathElementAddQuadCurveToPoint: {
cairo_fixed_t fx, fy;
double x, y;
if (!_cairo_path_fixed_get_current_point (path, &fx, &fy))
fx = fy = 0;
x = _cairo_fixed_to_double (fx);
y = _cairo_fixed_to_double (fy);
_cairo_path_fixed_curve_to (path,
_cairo_fixed_from_double((x + el->points[0].x * 2.0) / 3.0),
_cairo_fixed_from_double((y + el->points[0].y * 2.0) / 3.0),
_cairo_fixed_from_double((el->points[0].x * 2.0 + el->points[1].x) / 3.0),
_cairo_fixed_from_double((el->points[0].y * 2.0 + el->points[1].y) / 3.0),
_cairo_fixed_from_double(el->points[1].x),
_cairo_fixed_from_double(el->points[1].y));
}
break;
case kCGPathElementAddCurveToPoint:
_cairo_path_fixed_curve_to (path,
_cairo_fixed_from_double(el->points[0].x),
_cairo_fixed_from_double(el->points[0].y),
_cairo_fixed_from_double(el->points[1].x),
_cairo_fixed_from_double(el->points[1].y),
_cairo_fixed_from_double(el->points[2].x),
_cairo_fixed_from_double(el->points[2].y));
break;
case kCGPathElementCloseSubpath:
_cairo_path_fixed_close_path (path);
break;
}
}
static cairo_int_status_t
_cairo_quartz_init_glyph_path (cairo_quartz_scaled_font_t *font,
cairo_scaled_glyph_t *scaled_glyph)
{
cairo_quartz_font_face_t *font_face = _cairo_quartz_scaled_to_face(font);
CGGlyph glyph = _cairo_quartz_scaled_glyph_index (scaled_glyph);
CGAffineTransform textMatrix;
CGPathRef glyphPath;
cairo_path_fixed_t *path;
if (glyph == INVALID_GLYPH) {
_cairo_scaled_glyph_set_path (scaled_glyph, &font->base, _cairo_path_fixed_create());
return CAIRO_STATUS_SUCCESS;
}
textMatrix = CGAffineTransformMake (font->base.scale.xx,
-font->base.scale.yx,
-font->base.scale.xy,
font->base.scale.yy,
font->base.scale.x0,
font->base.scale.y0);
textMatrix = CGAffineTransformConcat (textMatrix, CGAffineTransformMake (1.0, 0.0, 0.0, -1.0, 0.0, 0.0));
glyphPath = CGFontGetGlyphPathPtr (font_face->cgFont, &textMatrix, 0, glyph);
if (!glyphPath)
return CAIRO_INT_STATUS_UNSUPPORTED;
path = _cairo_path_fixed_create ();
if (!path) {
CGPathRelease (glyphPath);
return _cairo_error(CAIRO_STATUS_NO_MEMORY);
}
CGPathApply (glyphPath, path, _cairo_quartz_path_apply_func);
CGPathRelease (glyphPath);
_cairo_scaled_glyph_set_path (scaled_glyph, &font->base, path);
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_quartz_init_glyph_surface (cairo_quartz_scaled_font_t *font,
cairo_scaled_glyph_t *scaled_glyph)
{
cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
cairo_quartz_font_face_t *font_face = _cairo_quartz_scaled_to_face(font);
cairo_image_surface_t *surface = NULL;
CGGlyph glyph = _cairo_quartz_scaled_glyph_index (scaled_glyph);
int advance;
CGRect bbox;
double width, height;
double xscale, yscale;
double emscale = CGFontGetUnitsPerEmPtr (font_face->cgFont);
CGColorSpaceRef gray;
CGContextRef cgContext = NULL;
CGAffineTransform textMatrix;
CGRect glyphRect, glyphRectInt;
CGPoint glyphOrigin;
if (glyph == INVALID_GLYPH) {
surface = (cairo_image_surface_t*) cairo_image_surface_create (CAIRO_FORMAT_A8, 2, 2);
status = cairo_surface_status ((cairo_surface_t *) surface);
if (status)
return status;
_cairo_scaled_glyph_set_surface (scaled_glyph,
&font->base,
surface);
return CAIRO_STATUS_SUCCESS;
}
if (!CGFontGetGlyphAdvancesPtr (font_face->cgFont, &glyph, 1, &advance) ||
!CGFontGetGlyphBBoxesPtr (font_face->cgFont, &glyph, 1, &bbox))
{
return CAIRO_INT_STATUS_UNSUPPORTED;
}
status = _cairo_matrix_compute_basis_scale_factors (&font->base.scale,
&xscale, &yscale, 1);
if (status)
return status;
textMatrix = CGAffineTransformMake (font->base.scale.xx,
-font->base.scale.yx,
-font->base.scale.xy,
font->base.scale.yy,
0.0f, 0.0f);
glyphRect = CGRectMake (bbox.origin.x / emscale,
bbox.origin.y / emscale,
bbox.size.width / emscale,
bbox.size.height / emscale);
glyphRect = CGRectApplyAffineTransform (glyphRect, textMatrix);
glyphRectInt = CGRectIntegral (glyphRect);
#if 0
fprintf (stderr, "glyphRect[o]: %f %f %f %f\n",
glyphRect.origin.x, glyphRect.origin.y, glyphRect.size.width, glyphRect.size.height);
fprintf (stderr, "glyphRectInt: %f %f %f %f\n",
glyphRectInt.origin.x, glyphRectInt.origin.y, glyphRectInt.size.width, glyphRectInt.size.height);
#endif
glyphOrigin = glyphRectInt.origin;
width = glyphRectInt.size.width;
height = glyphRectInt.size.height;
surface = (cairo_image_surface_t*) cairo_image_surface_create (CAIRO_FORMAT_A8, width, height);
if (surface->base.status)
return surface->base.status;
gray = CGColorSpaceCreateDeviceGray ();
cgContext = CGBitmapContextCreate (surface->data,
surface->width,
surface->height,
8,
surface->stride,
gray,
kCGImageAlphaNone);
CGColorSpaceRelease (gray);
CGContextSetFont (cgContext, font_face->cgFont);
CGContextSetFontSize (cgContext, 1.0);
CGContextSetTextMatrix (cgContext, textMatrix);
CGContextClearRect (cgContext, CGRectMake (0.0f, 0.0f, width, height));
if (font->base.options.antialias == CAIRO_ANTIALIAS_NONE)
CGContextSetShouldAntialias (cgContext, false);
CGContextSetRGBFillColor (cgContext, 1.0, 1.0, 1.0, 1.0);
CGContextShowGlyphsAtPoint (cgContext, - glyphOrigin.x, - glyphOrigin.y, &glyph, 1);
CGContextRelease (cgContext);
cairo_surface_set_device_offset (&surface->base,
- glyphOrigin.x,
height + glyphOrigin.y);
_cairo_scaled_glyph_set_surface (scaled_glyph, &font->base, surface);
return status;
}
static cairo_int_status_t
_cairo_quartz_font_scaled_glyph_init (void *abstract_font,
cairo_scaled_glyph_t *scaled_glyph,
cairo_scaled_glyph_info_t info)
{
cairo_quartz_scaled_font_t *font = (cairo_quartz_scaled_font_t *) abstract_font;
cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
if (!status && (info & CAIRO_SCALED_GLYPH_INFO_METRICS))
status = _cairo_quartz_init_glyph_metrics (font, scaled_glyph);
if (!status && (info & CAIRO_SCALED_GLYPH_INFO_PATH))
status = _cairo_quartz_init_glyph_path (font, scaled_glyph);
if (!status && (info & CAIRO_SCALED_GLYPH_INFO_SURFACE))
status = _cairo_quartz_init_glyph_surface (font, scaled_glyph);
return status;
}
static unsigned long
_cairo_quartz_ucs4_to_index (void *abstract_font,
uint32_t ucs4)
{
cairo_quartz_scaled_font_t *font = (cairo_quartz_scaled_font_t*) abstract_font;
cairo_quartz_font_face_t *ffont = _cairo_quartz_scaled_to_face(font);
UniChar u = (UniChar) ucs4;
CGGlyph glyph;
CGFontGetGlyphsForUnicharsPtr (ffont->cgFont, &u, &glyph, 1);
return glyph;
}
const cairo_scaled_font_backend_t _cairo_quartz_scaled_font_backend = {
CAIRO_FONT_TYPE_QUARTZ,
_cairo_quartz_font_get_implementation,
_cairo_quartz_font_create_toy,
_cairo_quartz_font_fini,
_cairo_quartz_font_scaled_glyph_init,
NULL,
_cairo_quartz_ucs4_to_index,
NULL,
NULL,
NULL,
};
CGFontRef
_cairo_quartz_scaled_font_get_cg_font_ref (cairo_scaled_font_t *abstract_font)
{
cairo_quartz_font_face_t *ffont = _cairo_quartz_scaled_to_face(abstract_font);
return ffont->cgFont;
}
cairo_font_face_t *
cairo_quartz_font_face_create_for_atsu_font_id (ATSUFontID font_id)
{
ATSFontRef atsFont = FMGetATSFontRefFromFont (font_id);
CGFontRef cgFont = CGFontCreateWithPlatformFont (&atsFont);
cairo_font_face_t *ff;
ff = cairo_quartz_font_face_create_for_cgfont (cgFont);
CGFontRelease (cgFont);
return ff;
}
cairo_font_face_t *cairo_atsui_font_face_create_for_atsu_font_id (ATSUFontID font_id);
cairo_font_face_t *
cairo_atsui_font_face_create_for_atsu_font_id (ATSUFontID font_id)
{
return cairo_quartz_font_face_create_for_atsu_font_id (font_id);
}