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/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file font_osx.cpp Functions related to font handling on MacOS. */
#include "../../stdafx.h"
#include "../../debug.h"
#include "../../fontdetection.h"
#include "../../string_func.h"
#include "../../strings_func.h"
#include "macos.h"
#include "safeguards.h"
#ifdef WITH_FREETYPE
#include <ft2build.h>
#include FT_FREETYPE_H
extern FT_Library _library;
FT_Error GetFontByFaceName(const char *font_name, FT_Face *face)
{
FT_Error err = FT_Err_Cannot_Open_Resource;
/* Get font reference from name. */
UInt8 file_path[PATH_MAX];
OSStatus os_err = -1;
CFAutoRelease<CFStringRef> name(CFStringCreateWithCString(kCFAllocatorDefault, font_name, kCFStringEncodingUTF8));
/* Simply creating the font using CTFontCreateWithNameAndSize will *always* return
* something, no matter the name. As such, we can't use it to check for existence.
* We instead query the list of all font descriptors that match the given name which
* does not do this stupid name fallback. */
CFAutoRelease<CTFontDescriptorRef> name_desc(CTFontDescriptorCreateWithNameAndSize(name.get(), 0.0));
CFAutoRelease<CFSetRef> mandatory_attribs(CFSetCreate(kCFAllocatorDefault, const_cast<const void **>(reinterpret_cast<const void *const *>(&kCTFontNameAttribute)), 1, &kCFTypeSetCallBacks));
CFAutoRelease<CFArrayRef> descs(CTFontDescriptorCreateMatchingFontDescriptors(name_desc.get(), mandatory_attribs.get()));
/* Loop over all matches until we can get a path for one of them. */
for (CFIndex i = 0; descs.get() != nullptr && i < CFArrayGetCount(descs.get()) && os_err != noErr; i++) {
CFAutoRelease<CTFontRef> font(CTFontCreateWithFontDescriptor((CTFontDescriptorRef)CFArrayGetValueAtIndex(descs.get(), i), 0.0, nullptr));
CFAutoRelease<CFURLRef> fontURL((CFURLRef)CTFontCopyAttribute(font.get(), kCTFontURLAttribute));
if (CFURLGetFileSystemRepresentation(fontURL.get(), true, file_path, lengthof(file_path))) os_err = noErr;
}
if (os_err == noErr) {
DEBUG(freetype, 3, "Font path for %s: %s", font_name, file_path);
err = FT_New_Face(_library, (const char *)file_path, 0, face);
}
return err;
}
#endif /* WITH_FREETYPE */
bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid, MissingGlyphSearcher *callback)
{
/* Determine fallback font using CoreText. This uses the language isocode
* to find a suitable font. CoreText is available from 10.5 onwards. */
char lang[16];
if (strcmp(language_isocode, "zh_TW") == 0) {
/* Traditional Chinese */
strecpy(lang, "zh-Hant", lastof(lang));
} else if (strcmp(language_isocode, "zh_CN") == 0) {
/* Simplified Chinese */
strecpy(lang, "zh-Hans", lastof(lang));
} else {
/* Just copy the first part of the isocode. */
strecpy(lang, language_isocode, lastof(lang));
char *sep = strchr(lang, '_');
if (sep != nullptr) *sep = '\0';
}
/* Create a font descriptor matching the wanted language and latin (english) glyphs.
* Can't use CFAutoRelease here for everything due to the way the dictionary has to be created. */
CFStringRef lang_codes[2];
lang_codes[0] = CFStringCreateWithCString(kCFAllocatorDefault, lang, kCFStringEncodingUTF8);
lang_codes[1] = CFSTR("en");
CFArrayRef lang_arr = CFArrayCreate(kCFAllocatorDefault, (const void **)lang_codes, lengthof(lang_codes), &kCFTypeArrayCallBacks);
CFAutoRelease<CFDictionaryRef> lang_attribs(CFDictionaryCreate(kCFAllocatorDefault, const_cast<const void **>(reinterpret_cast<const void *const *>(&kCTFontLanguagesAttribute)), (const void **)&lang_arr, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
CFAutoRelease<CTFontDescriptorRef> lang_desc(CTFontDescriptorCreateWithAttributes(lang_attribs.get()));
CFRelease(lang_arr);
CFRelease(lang_codes[0]);
/* Get array of all font descriptors for the wanted language. */
CFAutoRelease<CFSetRef> mandatory_attribs(CFSetCreate(kCFAllocatorDefault, const_cast<const void **>(reinterpret_cast<const void *const *>(&kCTFontLanguagesAttribute)), 1, &kCFTypeSetCallBacks));
CFAutoRelease<CFArrayRef> descs(CTFontDescriptorCreateMatchingFontDescriptors(lang_desc.get(), mandatory_attribs.get()));
bool result = false;
for (CFIndex i = 0; descs.get() != nullptr && i < CFArrayGetCount(descs.get()); i++) {
CTFontDescriptorRef font = (CTFontDescriptorRef)CFArrayGetValueAtIndex(descs.get(), i);
/* Get font traits. */
CFAutoRelease<CFDictionaryRef> traits((CFDictionaryRef)CTFontDescriptorCopyAttribute(font, kCTFontTraitsAttribute));
CTFontSymbolicTraits symbolic_traits;
CFNumberGetValue((CFNumberRef)CFDictionaryGetValue(traits.get(), kCTFontSymbolicTrait), kCFNumberIntType, &symbolic_traits);
/* Skip symbol fonts and vertical fonts. */
if ((symbolic_traits & kCTFontClassMaskTrait) == (CTFontStylisticClass)kCTFontSymbolicClass || (symbolic_traits & kCTFontVerticalTrait)) continue;
/* Skip bold fonts (especially Arial Bold, which looks worse than regular Arial). */
if (symbolic_traits & kCTFontBoldTrait) continue;
/* Select monospaced fonts if asked for. */
if (((symbolic_traits & kCTFontMonoSpaceTrait) == kCTFontMonoSpaceTrait) != callback->Monospace()) continue;
/* Get font name. */
char name[128];
CFAutoRelease<CFStringRef> font_name((CFStringRef)CTFontDescriptorCopyAttribute(font, kCTFontDisplayNameAttribute));
CFStringGetCString(font_name.get(), name, lengthof(name), kCFStringEncodingUTF8);
/* There are some special fonts starting with an '.' and the last
* resort font that aren't usable. Skip them. */
if (name[0] == '.' || strncmp(name, "LastResort", 10) == 0) continue;
/* Save result. */
callback->SetFontNames(settings, name);
if (!callback->FindMissingGlyphs()) {
DEBUG(freetype, 2, "CT-Font for %s: %s", language_isocode, name);
result = true;
break;
}
}
if (!result) {
/* For some OS versions, the font 'Arial Unicode MS' does not report all languages it
* supports. If we didn't find any other font, just try it, maybe we get lucky. */
callback->SetFontNames(settings, "Arial Unicode MS");
result = !callback->FindMissingGlyphs();
}
callback->FindMissingGlyphs();
return result;
}
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