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[coretext] Move code around

This commit is contained in:
Behdad Esfahbod 2016-02-22 15:28:37 +09:00
parent 04c6443153
commit e561122856
1 changed files with 62 additions and 47 deletions
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109
src/hb-coretext.cc
View File

@ -27,7 +27,6 @@
*/
#define HB_SHAPER coretext
#define hb_coretext_shaper_face_data_t CGFont
#include "hb-shaper-impl-private.hh"
#include "hb-coretext.h"
@ -78,6 +77,49 @@ HB_SHAPER_DATA_ENSURE_DECLARE(coretext, font)
* shaper face data
*/
static CTFontRef
create_ct_font (CGFontRef cg_font, CGFloat font_size)
{
CTFontRef ct_font = CTFontCreateWithGraphicsFont (cg_font, font_size, NULL, NULL);
if (unlikely (!ct_font)) {
DEBUG_MSG (CORETEXT, cg_font, "Font CTFontCreateWithGraphicsFont() failed");
return NULL;
}
/* Create font copy with cascade list that has LastResort first; this speeds up CoreText
* font fallback which we don't need anyway. */
{
// TODO Handle allocation failures?
CTFontDescriptorRef last_resort = CTFontDescriptorCreateWithNameAndSize(CFSTR("LastResort"), 0);
CFArrayRef cascade_list = CFArrayCreate (kCFAllocatorDefault,
(const void **) &last_resort,
1,
&kCFTypeArrayCallBacks);
CFRelease (last_resort);
CFDictionaryRef attributes = CFDictionaryCreate (kCFAllocatorDefault,
(const void **) &kCTFontCascadeListAttribute,
(const void **) &cascade_list,
1,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFRelease (cascade_list);
CTFontDescriptorRef new_font_desc = CTFontDescriptorCreateWithAttributes (attributes);
CFRelease (attributes);
CTFontRef new_ct_font = CTFontCreateCopyWithAttributes (ct_font, 0.0, NULL, new_font_desc);
if (new_ct_font)
{
CFRelease (ct_font);
ct_font = new_ct_font;
}
else
DEBUG_MSG (CORETEXT, ct_font, "Font copy with empty cascade list failed");
}
return ct_font;
}
static void
release_data (void *info, const void *data, size_t size)
{
@ -87,14 +129,20 @@ release_data (void *info, const void *data, size_t size)
hb_blob_destroy ((hb_blob_t *) info);
}
struct hb_coretext_shaper_face_data_t {
CGFontRef cg_font;
};
hb_coretext_shaper_face_data_t *
_hb_coretext_shaper_face_data_create (hb_face_t *face)
{
hb_coretext_shaper_face_data_t *data = NULL;
hb_coretext_shaper_face_data_t *data = (hb_coretext_shaper_face_data_t *) calloc (1, sizeof (hb_coretext_shaper_face_data_t));
if (unlikely (!data))
return NULL;
if (face->destroy == (hb_destroy_func_t) CGFontRelease)
{
data = CGFontRetain ((CGFontRef) face->user_data);
data->cg_font = CGFontRetain ((CGFontRef) face->user_data);
}
else
{
@ -107,13 +155,15 @@ _hb_coretext_shaper_face_data_create (hb_face_t *face)
CGDataProviderRef provider = CGDataProviderCreateWithData (blob, blob_data, blob_length, &release_data);
if (likely (provider))
{
data = CGFontCreateWithDataProvider (provider);
data->cg_font = CGFontCreateWithDataProvider (provider);
CGDataProviderRelease (provider);
}
}
if (unlikely (!data)) {
if (unlikely (!data->cg_font)) {
DEBUG_MSG (CORETEXT, face, "Face CGFontCreateWithDataProvider() failed");
free (data);
return NULL;
}
return data;
@ -122,7 +172,8 @@ _hb_coretext_shaper_face_data_create (hb_face_t *face)
void
_hb_coretext_shaper_face_data_destroy (hb_coretext_shaper_face_data_t *data)
{
CFRelease (data);
CFRelease (data->cg_font);
free (data);
}
/*
@ -133,7 +184,7 @@ hb_coretext_face_get_cg_font (hb_face_t *face)
{
if (unlikely (!hb_coretext_shaper_face_data_ensure (face))) return NULL;
hb_coretext_shaper_face_data_t *face_data = HB_SHAPER_DATA_GET (face);
return face_data;
return face_data->cg_font;
}
@ -160,46 +211,10 @@ _hb_coretext_shaper_font_data_create (hb_font_t *font)
/* We use 36pt size instead of UPEM, because CoreText implements the 'trak' table,
* which can make the font too tight at large sizes. 36pt should be a good semi-neutral
* size. */
data->ct_font = CTFontCreateWithGraphicsFont (face_data, 36., NULL, NULL);
if (unlikely (!data->ct_font)) {
DEBUG_MSG (CORETEXT, font, "Font CTFontCreateWithGraphicsFont() failed");
free (data);
return NULL;
}
/* Create font copy with cascade list that has LastResort first; this speeds up CoreText
* font fallback which we don't need anyway. */
data->ct_font = create_ct_font (face_data->cg_font, 36.);
if (unlikely (!data->ct_font))
{
// TODO Handle allocation failures?
CTFontDescriptorRef last_resort = CTFontDescriptorCreateWithNameAndSize(CFSTR("LastResort"), 0);
CFArrayRef cascade_list = CFArrayCreate (kCFAllocatorDefault,
(const void **) &last_resort,
1,
&kCFTypeArrayCallBacks);
CFRelease (last_resort);
CFDictionaryRef attributes = CFDictionaryCreate (kCFAllocatorDefault,
(const void **) &kCTFontCascadeListAttribute,
(const void **) &cascade_list,
1,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
CFRelease (cascade_list);
CTFontDescriptorRef new_font_desc = CTFontDescriptorCreateWithAttributes (attributes);
CFRelease (attributes);
CTFontRef new_ct_font = CTFontCreateCopyWithAttributes (data->ct_font, 0.0, NULL, new_font_desc);
if (new_ct_font)
{
CFRelease (data->ct_font);
data->ct_font = new_ct_font;
}
else
DEBUG_MSG (CORETEXT, font, "Font copy with empty cascade list failed");
}
if (unlikely (!data->ct_font)) {
DEBUG_MSG (CORETEXT, font, "Font CTFontCreateWithGraphicsFont() failed");
DEBUG_MSG (CORETEXT, font, "CTFont creation failed");
free (data);
return NULL;
}
@ -898,7 +913,7 @@ resize_and_retry:
CGFontRef run_cg_font = CTFontCopyGraphicsFont (run_ct_font, 0);
if (run_cg_font)
{
matched = CFEqual (run_cg_font, face_data);
matched = CFEqual (run_cg_font, face_data->cg_font);
CFRelease (run_cg_font);
}
}