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/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
/* cairo - a vector graphics library with display and print output
*
* Copyright � 2008 Mozilla Corporation
*
* This library is free software; you can redistribute it and/or
* modify it either under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation
* (the "LGPL") or, at your option, under the terms of the Mozilla
* Public License Version 1.1 (the "MPL"). If you do not alter this
* notice, a recipient may use your version of this file under either
* the MPL or the LGPL.
*
* You should have received a copy of the LGPL along with this library
* in the file COPYING-LGPL-2.1; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
* You should have received a copy of the MPL along with this library
* in the file COPYING-MPL-1.1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
* OF ANY KIND, either express or implied. See the LGPL or the MPL for
* the specific language governing rights and limitations.
*
* The Original Code is the cairo graphics library.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
*
* Contributor(s):
* Vladimir Vukicevic <vladimir@mozilla.com>
*/
#include "cairoint.h"
#include <dlfcn.h>
#include "cairo-image-surface-private.h"
#include "cairo-quartz.h"
#include "cairo-quartz-private.h"
#include "cairo-error-private.h"
//#define DEBUG /* Uncomment this to get debug messages on the console. */
/**
* SECTION:cairo-quartz-fonts
* @Title: Quartz (CGFont) Fonts
* @Short_Description: Font support via Core Text on Apple operating systems.
* @See_Also: #cairo_font_face_t
*
* Provide support for font faces via Core Text.
**/
/**
* CAIRO_HAS_QUARTZ_FONT:
*
* Defined if the Quartz font backend is available.
* This macro can be used to conditionally compile backend-specific code.
*
* Since: 1.6
**/
/* These are private functions */
static bool (*CGContextGetAllowsFontSmoothingPtr) (CGContextRef) = NULL;
#ifdef CAIRO_HAS_QUARTZ_ATSUFONTID
static ATSFontRef (*FMGetATSFontRefFromFontPtr) (FMFont iFont) = NULL;
#endif /* CAIRO_HAS_QUARTZ_ATSUFONTID */
static cairo_bool_t _cairo_quartz_font_symbol_lookup_done = FALSE;
/* Cairo's transformations assume a unit-scaled font. */
static const CGFloat font_scale = 1.0;
/* Defined in 10.11 */
#define CGGLYPH_MAX ((CGGlyph) 0xFFFE) /* kCGFontIndexMax */
#define CGGLYPH_INVALID ((CGGlyph) 0xFFFF) /* kCGFontIndexInvalid */
#if MAC_OS_X_VERSION_MIN_REQUIRED < 1080
#define FONT_ORIENTATION_HORIZONTAL kCTFontHorizontalOrientation
#define FONT_COLOR_GLYPHS kCTFontTraitColorGlyphs
#else
#define FONT_ORIENTATION_HORIZONTAL kCTFontOrientationHorizontal
#define FONT_COLOR_GLYPHS kCTFontColorGlyphsTrait
#endif
static void
quartz_font_ensure_symbols(void)
{
if (_cairo_quartz_font_symbol_lookup_done)
return;
CGContextGetAllowsFontSmoothingPtr =
dlsym (RTLD_DEFAULT, "CGContextGetAllowsFontSmoothing");
#ifdef CAIRO_HAS_QUARTZ_ATSUFONTID
FMGetATSFontRefFromFontPtr = dlsym(RTLD_DEFAULT, "FMGetATSFontRefFromFont");
#endif /* CAIRO_HAS_QUARTZ_ATSUFONTID */
_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;
CTFontRef ctFont;
};
struct _cairo_quartz_font_face {
cairo_font_face_t base;
CGFontRef cgFont;
};
/*
* font face backend
*/
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 FontName = NULL;
CGFontRef cgFont = NULL;
int loop;
family = toy_face->family;
full_name = _cairo_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");
}
FontName = CFStringCreateWithCString (NULL, full_name, kCFStringEncodingASCII);
cgFont = CGFontCreateWithFontName (FontName);
CFRelease (FontName);
if (cgFont)
break;
}
if (!cgFont) {
/* Give up */
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
*font_face = cairo_quartz_font_face_create_for_cgfont (cgFont);
CFRelease (cgFont);
return CAIRO_STATUS_SUCCESS;
}
static cairo_bool_t
_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);
return TRUE;
}
static const cairo_scaled_font_backend_t _cairo_quartz_scaled_font_backend;
#ifdef DEBUG
static void
_cairo_quartz_debug_font_characteristics (cairo_quartz_scaled_font_t *font)
{
CGRect ct_bbox = CTFontGetBoundingBox (font->ctFont);
CGFloat ct_ascent = CTFontGetAscent (font->ctFont);
CGFloat ct_descent = CTFontGetDescent (font->ctFont);
CGFloat ct_leading = CTFontGetLeading (font->ctFont);
CGFloat ct_capheight = CTFontGetCapHeight (font->ctFont);
CGFloat ct_xheight = CTFontGetXHeight (font->ctFont);
char chars[] = "ymMW";
CGGlyph glyphs[4];
UniChar *utf16 = NULL;
CGSize ct_advances[4];
CGRect ct_gbbox[4], ct_gobox[4], ct_rbbox, ct_robox;
double ct_radvance;
int converted;
cairo_status_t rv;
rv = _cairo_utf8_to_utf16 (chars, 4, &utf16, &converted);
if (rv) return;
CTFontGetGlyphsForCharacters (font->ctFont, utf16, glyphs, 4);
free (utf16);
ct_rbbox = CTFontGetBoundingRectsForGlyphs (font->ctFont, FONT_ORIENTATION_HORIZONTAL, glyphs, ct_gbbox, 4);
ct_robox = CTFontGetOpticalBoundsForGlyphs (font->ctFont, glyphs, ct_gobox, 4, 0);
ct_radvance = CTFontGetAdvancesForGlyphs (font->ctFont, FONT_ORIENTATION_HORIZONTAL, glyphs, ct_advances, 4);
fprintf (stderr, "\nCTFont Bounding Box: %f %f %f %f\nAscent %f Descent %f Leading %f Cap Height %f X-Height %f\n",
ct_bbox.origin.x, ct_bbox.origin.y, ct_bbox.size.width, ct_bbox.size.height, ct_ascent, ct_descent,
ct_leading, ct_capheight, ct_xheight);
fprintf (stderr, "CTFont string\n\t bounding box %f %f %f %f advance %f\n\toptical box %f %f %f %f\n\n",
ct_rbbox.origin.x, ct_rbbox.origin.y, ct_rbbox.size.width, ct_rbbox.size.height, ct_radvance,
ct_robox.origin.x, ct_robox.origin.y, ct_robox.size.width, ct_robox.size.height);
for (int i = 0; i < 4; ++i)
{
fprintf (stderr, "Character %c\n", chars[i]);
fprintf (stderr, "\tbox %f %f %f %f\n\toptical %f %f %f %f advance %f %f\n",
ct_gbbox[i].origin.x, ct_gbbox[i].origin.y, ct_gbbox[i].size.width, ct_gbbox[i].size.height,
ct_advances[i].width, ct_advances[i].height,
ct_gobox[i].origin.x, ct_gobox[i].origin.y, ct_gobox[i].size.width, ct_gobox[i].size.height);
}
fprintf (stderr, "\n");
}
#endif
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;
CTFontRef ctFont;
CGRect bbox;
font = _cairo_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;
ctFont = CTFontCreateWithGraphicsFont (font_face->cgFont, font_scale, NULL, NULL);
/* initialize metrics */
fs_metrics.ascent = CTFontGetAscent (ctFont);
fs_metrics.descent = CTFontGetDescent (ctFont);
fs_metrics.height = fs_metrics.ascent + fs_metrics.descent +
CTFontGetLeading (ctFont);
bbox = CTFontGetBoundingBox (ctFont);
fs_metrics.max_x_advance = CGRectGetMaxX(bbox);
fs_metrics.max_y_advance = 0.0;
font->ctFont = CFRetain (ctFont);
status = _cairo_scaled_font_set_metrics (&font->base, &fs_metrics);
#ifdef DEBUG
{
CFStringRef fontFullName = CTFontCopyFullName (ctFont);
const char* font_full_name = CFStringGetCStringPtr(fontFullName, kCFStringEncodingUTF8);
fprintf (stderr, "Create scaled font %s with scale %f ascent %f, descent %f, height %f, x-advance %f\n",
font_full_name, fs_metrics.ascent, fs_metrics.descent, fs_metrics.height,
fs_metrics.max_x_advance);
_cairo_quartz_debug_font_characteristics (font);
}
#endif
FINISH:
if (status != CAIRO_STATUS_SUCCESS) {
free (font);
} else {
*font_out = (cairo_scaled_font_t*) font;
}
return status;
}
const cairo_font_face_backend_t _cairo_quartz_font_face_backend = {
CAIRO_FONT_TYPE_QUARTZ,
_cairo_quartz_font_face_create_for_toy,
_cairo_quartz_font_face_destroy,
_cairo_quartz_font_face_scaled_font_create
};
static inline cairo_quartz_font_face_t*
_cairo_quartz_font_face_create ()
{
cairo_quartz_font_face_t *font_face =
_cairo_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_quartz_font_face_t *)&_cairo_font_face_nil;
}
_cairo_font_face_init (&font_face->base, &_cairo_quartz_font_face_backend);
return font_face;
}
/**
* 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 = _cairo_quartz_font_face_create ();
if (cairo_font_face_status (&font_face->base))
return &font_face->base;
font_face->cgFont = CGFontRetain (font);
return &font_face->base;
}
/*
* scaled font backend
*/
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 = sfont->base.font_face;
assert (font_face->backend->type == CAIRO_FONT_TYPE_QUARTZ);
return (cairo_quartz_font_face_t*) font_face;
}
static void
_cairo_quartz_scaled_font_fini(void *abstract_font)
{
cairo_quartz_scaled_font_t* font = (cairo_quartz_scaled_font_t*)abstract_font;
CFRelease (font->ctFont);
}
static inline CGGlyph
_cairo_quartz_scaled_glyph_index (cairo_scaled_glyph_t *scaled_glyph) {
unsigned long index = _cairo_scaled_glyph_index (scaled_glyph);
return index <= CGGLYPH_MAX ? index : CGGLYPH_INVALID;
}
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_text_extents_t extents = {0, 0, 0, 0, 0, 0};
CGGlyph glyph = _cairo_quartz_scaled_glyph_index (scaled_glyph);
CGSize advance;
CGRect bbox;
double xmin, ymin, xmax, ymax;
if (unlikely (glyph == CGGLYPH_INVALID))
goto FAIL;
CTFontGetAdvancesForGlyphs (font->ctFont, FONT_ORIENTATION_HORIZONTAL, &glyph, &advance, 1);
CTFontGetBoundingRectsForGlyphs (font->ctFont, FONT_ORIENTATION_HORIZONTAL, &glyph, &bbox, 1);
/* broken fonts like Al Bayan return incorrect bounds for some null characters,
if (unlikely (bbox.origin.x == -32767 &&
bbox.origin.y == -32767 &&
bbox.size.width == 65534 &&
bbox.size.height == 65534)) {
bbox.origin.x = bbox.origin.y = 0;
bbox.size.width = bbox.size.height = 0;
}
#ifdef DEBUG
fprintf (stderr, "[0x%04x] bbox: x %f y %f width %f height %f\n", glyph,
bbox.origin.x, bbox.origin.y, bbox.size.width, bbox.size.height);
#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;
/* At the necessary 1.0pt ctFont size some glyphs get a reduced
* advance that causes overlaps when scaled up. We can avoid that by
* using the width instead if it's wider. Since cairo doesn't support
* vertical font layout we don't do the same for y_advance.
*/
extents.x_advance = MAX(extents.width, advance.width);
extents.y_advance = advance.height;
#ifdef DEBUG
fprintf (stderr, "[0x%04x] extents: bearings: %f %f dim: %f %f adv: %f %f\n\n", glyph,
extents.x_bearing, extents.y_bearing, extents.width, extents.height, extents.x_advance, extents.y_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;
cairo_status_t status;
switch (el->type) {
case kCGPathElementMoveToPoint:
status = _cairo_path_fixed_move_to (path,
_cairo_fixed_from_double(el->points[0].x),
_cairo_fixed_from_double(el->points[0].y));
assert(!status);
break;
case kCGPathElementAddLineToPoint:
status = _cairo_path_fixed_line_to (path,
_cairo_fixed_from_double(el->points[0].x),
_cairo_fixed_from_double(el->points[0].y));
assert(!status);
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);
status = _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));
}
assert(!status);
break;
case kCGPathElementAddCurveToPoint:
status = _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));
assert(!status);
break;
case kCGPathElementCloseSubpath:
status = _cairo_path_fixed_close_path (path);
assert(!status);
break;
}
}
static cairo_int_status_t
_cairo_quartz_init_glyph_path (cairo_quartz_scaled_font_t *font,
cairo_scaled_glyph_t *scaled_glyph)
{
CGGlyph glyph = _cairo_quartz_scaled_glyph_index (scaled_glyph);
CGAffineTransform textMatrix;
CGPathRef glyphPath;
cairo_path_fixed_t *path;
if (unlikely (glyph == CGGLYPH_INVALID)) {
_cairo_scaled_glyph_set_path (scaled_glyph, &font->base, _cairo_path_fixed_create());
return CAIRO_STATUS_SUCCESS;
}
/* scale(1,-1) * font->base.scale */
textMatrix = CGAffineTransformMake (font->base.scale.xx,
font->base.scale.yx,
-font->base.scale.xy,
-font->base.scale.yy,
0, 0);
glyphPath = CTFontCreatePathForGlyph (font->ctFont, glyph, &textMatrix);
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_bool_t
_cairo_quartz_font_has_color_glyphs (void *abstract_font)
{
cairo_quartz_scaled_font_t *face = (cairo_quartz_scaled_font_t*)abstract_font;
CTFontSymbolicTraits traits = CTFontGetSymbolicTraits (face->ctFont);
return traits & FONT_COLOR_GLYPHS;
}
static cairo_int_status_t
_cairo_quartz_init_glyph_surface (cairo_quartz_scaled_font_t *font,
cairo_scaled_glyph_t *scaled_glyph,
cairo_scaled_glyph_info_t info,
const cairo_color_t *fg_color)
{
cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
cairo_image_surface_t *surface = NULL;
CGGlyph glyph = _cairo_quartz_scaled_glyph_index (scaled_glyph);
cairo_text_extents_t metrics = scaled_glyph->fs_metrics;
CGRect bbox = CGRectMake (metrics.x_bearing, -(metrics.y_bearing + metrics.height),
metrics.width, metrics.height);
double width, height;
CGAffineTransform textMatrix;
CGRect glyphRect, glyphRectInt;
CGPoint glyphOrigin;
cairo_bool_t is_color = info & CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE;
cairo_format_t format = is_color ? CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_A8;
#ifdef DEBUG
fprintf (stderr, "[0x%04x] bearing: %f %f width %f height %f advances %f %f\n",
glyph, metrics.x_bearing, metrics.y_bearing, metrics.width, metrics.height,
metrics.x_advance, metrics.y_advance);
fprintf (stderr, "[0x%04x] bounds: origin %f %f, size %f %f\n", glyph, bbox.origin.x,
bbox.origin.y, bbox.size.width, bbox.size.height);
#endif
/* Create blank 2x2 image if we don't have this character.
* Maybe we should draw a better missing-glyph slug or something,
* but this is ok for now.
*/
if (unlikely (glyph == CGGLYPH_INVALID)) {
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;
}
/* Note: Certain opentype color fonts have the ability to provide a
* mixture of color and not-color glyphs. The Core Text API doesn't
* expose a way to query individual glyphs and at the level that that
* API is written it's not supposed to matter. The following code will
* cheerfully render any glyph requested onto the image surface. If
* the font is capable of color and
* COLOR_SCALED_GLYPH_INFO_COLOR_SURFACE is set then you get back a
* CAIRO_FORMAT_ARGB32 surface. If a foreground color is provided then
* the glyph will be drawn in that color, otherwise it will be black.
*/
if (unlikely (is_color && ! _cairo_quartz_font_has_color_glyphs (font)))
return CAIRO_INT_STATUS_UNSUPPORTED;
/* scale(1,-1) * font->base.scale * scale(1,-1) */
textMatrix = CGAffineTransformMake (font->base.scale.xx,
-font->base.scale.yx,
-font->base.scale.xy,
font->base.scale.yy,
0, 0);
glyphRect = CGRectApplyAffineTransform (bbox, textMatrix);
/* Round the rectangle outwards, so that we don't have to deal
* with non-integer-pixel origins or dimensions.
*/
glyphRectInt = CGRectIntegral (glyphRect);
#ifdef DEBUG
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 (format, width, height);
if (surface->base.status)
return surface->base.status;
if (surface->width != 0 && surface->height != 0) {
CGColorSpaceRef colorspace = is_color ? CGColorSpaceCreateDeviceRGB () : NULL;
CGBitmapInfo bitinfo = is_color ? kCGBitmapByteOrder32Host | kCGImageAlphaPremultipliedFirst : kCGImageAlphaOnly;
CGContextRef cgContext = CGBitmapContextCreate (surface->data,
surface->width,
surface->height,
8,
surface->stride,
colorspace,
bitinfo);
if (cgContext == NULL) {
cairo_surface_destroy (&surface->base);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
if (fg_color)
CGContextSetRGBFillColor (cgContext, fg_color->red, fg_color->green, fg_color->blue, fg_color->alpha);
_cairo_quartz_set_antialiasing (cgContext, font->base.options.antialias);
CGContextSetAlpha (cgContext, 1.0);
CGContextTranslateCTM (cgContext, -glyphOrigin.x, -glyphOrigin.y);
CGContextConcatCTM (cgContext, textMatrix);
CTFontDrawGlyphs (font->ctFont, &glyph, &CGPointZero, 1, cgContext);
CGContextRelease (cgContext);
CGColorSpaceRelease (colorspace);
}
cairo_surface_set_device_offset (&surface->base,
- glyphOrigin.x,
height + glyphOrigin.y);
cairo_surface_mark_dirty (&surface->base);
if (is_color)
_cairo_scaled_glyph_set_color_surface (scaled_glyph, &font->base, surface, fg_color);
else
_cairo_scaled_glyph_set_surface (scaled_glyph, &font->base, surface);
return status;
}
static cairo_int_status_t
_cairo_quartz_scaled_glyph_init (void *abstract_font,
cairo_scaled_glyph_t *scaled_glyph,
cairo_scaled_glyph_info_t info,
const cairo_color_t *foreground_color)
{
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 |
CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE )))
status = _cairo_quartz_init_glyph_surface (font, scaled_glyph,
info, foreground_color);
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;
CGGlyph glyph[2];
UniChar utf16[2];
int len = _cairo_ucs4_to_utf16 (ucs4, utf16);
CTFontGetGlyphsForCharacters (font->ctFont, utf16, glyph, len);
return glyph[0];
}
static cairo_int_status_t
_cairo_quartz_load_truetype_table (void *abstract_font,
unsigned long tag,
long offset,
unsigned char *buffer,
unsigned long *length)
{
cairo_quartz_scaled_font_t *font = (cairo_quartz_scaled_font_t*) abstract_font;
CFDataRef data = CTFontCopyTable (font->ctFont, tag, kCTFontTableOptionNoOptions);
if (!data)
return CAIRO_INT_STATUS_UNSUPPORTED;
if (buffer == NULL) {
*length = CFDataGetLength (data);
CFRelease (data);
return CAIRO_STATUS_SUCCESS;
}
if (CFDataGetLength (data) < offset + (long) *length) {
CFRelease (data);
return CAIRO_INT_STATUS_UNSUPPORTED;
}
CFDataGetBytes (data, CFRangeMake (offset, *length), buffer);
CFRelease (data);
return CAIRO_STATUS_SUCCESS;
}
static const cairo_scaled_font_backend_t _cairo_quartz_scaled_font_backend = {
CAIRO_FONT_TYPE_QUARTZ,
_cairo_quartz_scaled_font_fini,
_cairo_quartz_scaled_glyph_init,
NULL, /* text_to_glyphs */
_cairo_quartz_ucs4_to_index,
_cairo_quartz_load_truetype_table,
NULL, /*index_to_ucs4*/
NULL, /* is_synthetic */
NULL, /* index_to_glyph_name */
NULL, /* load_type1_data */
_cairo_quartz_font_has_color_glyphs
};
/*
* private methods that the quartz surface uses
*/
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;
}
CTFontRef
_cairo_quartz_scaled_font_get_ct_font (cairo_scaled_font_t *abstract_font)
{
cairo_quartz_scaled_font_t *font = (cairo_quartz_scaled_font_t*) abstract_font;
return font->ctFont;
}
void
_cairo_quartz_set_antialiasing (CGContextRef cgContext, cairo_antialias_t antialias)
{
switch (antialias) {
case CAIRO_ANTIALIAS_SUBPIXEL:
case CAIRO_ANTIALIAS_BEST:
CGContextSetShouldAntialias (cgContext, TRUE);
CGContextSetShouldSmoothFonts (cgContext, TRUE);
quartz_font_ensure_symbols ();
if (CGContextGetAllowsFontSmoothingPtr &&
!CGContextGetAllowsFontSmoothingPtr (cgContext))
CGContextSetAllowsFontSmoothing (cgContext, TRUE);
break;
case CAIRO_ANTIALIAS_NONE:
CGContextSetShouldAntialias (cgContext, FALSE);
break;
case CAIRO_ANTIALIAS_GRAY:
case CAIRO_ANTIALIAS_GOOD:
case CAIRO_ANTIALIAS_FAST:
CGContextSetShouldAntialias (cgContext, TRUE);
CGContextSetShouldSmoothFonts (cgContext, FALSE);
break;
case CAIRO_ANTIALIAS_DEFAULT:
default:
/* Don't do anything */
break;
}
}
/*
* compat with old ATSUI backend
*/
#ifdef CAIRO_HAS_QUARTZ_ATSUFONTID
/**
* 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;
}
}
/* This is the old name for the above function, exported for compat purposes */
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);
}
#endif /* CAIRO_HAS_QUARTZ_ATSUFONTID */