mirror of
https://github.com/juce-framework/JUCE.git
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416 lines
17 KiB
Text
416 lines
17 KiB
Text
/*
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==============================================================================
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This file is part of the JUCE framework.
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Copyright (c) Raw Material Software Limited
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JUCE is an open source framework subject to commercial or open source
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licensing.
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By downloading, installing, or using the JUCE framework, or combining the
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JUCE framework with any other source code, object code, content or any other
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copyrightable work, you agree to the terms of the JUCE End User Licence
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Agreement, and all incorporated terms including the JUCE Privacy Policy and
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the JUCE Website Terms of Service, as applicable, which will bind you. If you
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do not agree to the terms of these agreements, we will not license the JUCE
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framework to you, and you must discontinue the installation or download
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process and cease use of the JUCE framework.
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JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
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JUCE Privacy Policy: https://juce.com/juce-privacy-policy
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JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
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Or:
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You may also use this code under the terms of the AGPLv3:
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https://www.gnu.org/licenses/agpl-3.0.en.html
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THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
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WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
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MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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// This symbol is available on all the platforms we support, but not declared in the CoreText headers on older platforms.
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extern "C" CTFontRef CTFontCreateForStringWithLanguage (CTFontRef currentFont,
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CFStringRef string,
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CFRange range,
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CFStringRef language);
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class CoreTextTypeface final : public Typeface
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{
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static auto& getRegistered()
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{
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class Registered
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{
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public:
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void add (CTFontRef ref)
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{
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const std::scoped_lock lock { mutex };
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CFUniquePtr<CGFontRef> cgFont { CTFontCopyGraphicsFont (ref, nullptr) };
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if (CTFontManagerRegisterGraphicsFont (cgFont.get(), nullptr))
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map.emplace (ref, std::move (cgFont));
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}
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void remove (CTFontRef ref)
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{
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const std::scoped_lock lock { mutex };
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if (const auto iter = map.find (ref); iter != map.end())
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{
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CTFontManagerUnregisterGraphicsFont (iter->second.get(), nullptr);
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map.erase (iter);
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}
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}
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std::set<String> getRegisteredFamilies() const
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{
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const std::scoped_lock lock { mutex };
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std::set<String> result;
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for (const auto& item : map)
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{
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const CFUniquePtr<CFStringRef> family { CTFontCopyName (item.first, kCTFontFamilyNameKey) };
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result.insert (String::fromCFString (family.get()));
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}
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return result;
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}
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private:
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std::map<CTFontRef, CFUniquePtr<CGFontRef>> map;
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mutable std::mutex mutex;
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};
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static Registered registered;
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return registered;
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}
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public:
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static Typeface::Ptr from (const Font& font)
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{
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CFUniquePtr<CFStringRef> cfFontFamily (FontStyleHelpers::getConcreteFamilyName (font).toCFString());
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if (cfFontFamily == nullptr)
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return {};
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CFUniquePtr<CFStringRef> cfFontStyle (findBestAvailableStyle (font).toCFString());
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if (cfFontStyle == nullptr)
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return {};
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CFStringRef keys[] { kCTFontFamilyNameAttribute, kCTFontStyleNameAttribute };
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CFTypeRef values[] { cfFontFamily.get(), cfFontStyle.get() };
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CFUniquePtr<CFDictionaryRef> fontDescAttributes (CFDictionaryCreate (nullptr,
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(const void**) &keys,
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(const void**) &values,
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numElementsInArray (keys),
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&kCFTypeDictionaryKeyCallBacks,
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&kCFTypeDictionaryValueCallBacks));
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if (fontDescAttributes == nullptr)
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return {};
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CFUniquePtr<CTFontDescriptorRef> ctFontDescRef (CTFontDescriptorCreateWithAttributes (fontDescAttributes.get()));
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if (ctFontDescRef == nullptr)
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return {};
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CFUniquePtr<CTFontRef> ctFont { CTFontCreateWithFontDescriptor (ctFontDescRef.get(), 1, nullptr) };
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if (ctFont == nullptr)
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return {};
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HbFont result { hb_coretext_font_create (ctFont.get()) };
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if (result == nullptr)
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return {};
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FontStyleHelpers::initSynthetics (result.get(), font);
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return new CoreTextTypeface (std::move (ctFont), std::move (result), font.getTypefaceName(), font.getTypefaceStyle());
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}
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static Typeface::Ptr from (Span<const std::byte> data)
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{
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// We can't use CFDataCreate here as this triggers a false positive in ASAN
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// so copy the data manually and use CFDataCreateWithBytesNoCopy
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MemoryBlock copy { data.data(), data.size() };
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const CFUniquePtr<CFDataRef> cfData { CFDataCreateWithBytesNoCopy (kCFAllocatorDefault,
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static_cast<const UInt8*> (copy.getData()),
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(CFIndex) copy.getSize(),
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kCFAllocatorNull) };
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if (cfData == nullptr)
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return {};
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#if JUCE_IOS
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// Workaround for a an obscure iOS bug which can cause the app to dead-lock
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// when loading custom type faces. See: http://www.openradar.me/18778790 and
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// http://stackoverflow.com/questions/40242370/app-hangs-in-simulator
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[UIFont systemFontOfSize: 12];
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#endif
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const CFUniquePtr<CGDataProviderRef> provider { CGDataProviderCreateWithCFData (cfData.get()) };
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if (provider == nullptr)
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return {};
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const CFUniquePtr<CGFontRef> font { CGFontCreateWithDataProvider (provider.get()) };
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if (font == nullptr)
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return {};
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CFUniquePtr<CTFontRef> ctFont { CTFontCreateWithGraphicsFont (font.get(), 1.0f, {}, {}) };
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if (ctFont == nullptr)
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return {};
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HbFont result { hb_coretext_font_create (ctFont.get()) };
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if (result == nullptr)
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return {};
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const CFUniquePtr<CFStringRef> family { CTFontCopyName (ctFont.get(), kCTFontFamilyNameKey) };
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const CFUniquePtr<CFStringRef> style { CTFontCopyName (ctFont.get(), kCTFontStyleNameKey) };
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return new CoreTextTypeface (std::move (ctFont),
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std::move (result),
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String::fromCFString (family.get()),
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String::fromCFString (style.get()),
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std::move (copy));
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}
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Native getNativeDetails() const override
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{
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return Native { hb.get(), nonPortableMetrics };
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}
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Typeface::Ptr createSystemFallback (const String& c, const String& language) const override
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{
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const CFUniquePtr<CFStringRef> cfText { c.toCFString() };
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const CFUniquePtr<CFStringRef> cfLanguage { language.toCFString() };
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auto* old = ctFont.get();
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const CFUniquePtr<CFStringRef> oldName { CTFontCopyFamilyName (old) };
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const CFUniquePtr<CTFontDescriptorRef> oldDescriptor { CTFontCopyFontDescriptor (old) };
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const CFUniquePtr<CFStringRef> oldStyle { (CFStringRef) CTFontDescriptorCopyAttribute (oldDescriptor.get(),
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kCTFontStyleNameAttribute) };
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CFUniquePtr<CTFontRef> newFont { CTFontCreateForStringWithLanguage (old,
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cfText.get(),
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CFRangeMake (0, CFStringGetLength (cfText.get())),
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cfLanguage.get()) };
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const CFUniquePtr<CFStringRef> newName { CTFontCopyFamilyName (newFont.get()) };
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const CFUniquePtr<CTFontDescriptorRef> descriptor { CTFontCopyFontDescriptor (newFont.get()) };
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const CFUniquePtr<CFStringRef> newStyle { (CFStringRef) CTFontDescriptorCopyAttribute (descriptor.get(),
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kCTFontStyleNameAttribute) };
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HbFont result { hb_coretext_font_create (newFont.get()) };
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if (result == nullptr)
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return {};
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return new CoreTextTypeface { std::move (newFont),
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std::move (result),
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String::fromCFString (newName.get()),
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String::fromCFString (newStyle.get()),
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{} };
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}
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static std::set<String> getRegisteredFamilies()
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{
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return getRegistered().getRegisteredFamilies();
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}
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~CoreTextTypeface() override
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{
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getRegistered().remove (ctFont.get());
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}
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CTFontRef getFontRef() const
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{
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return ctFont.get();
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}
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static Typeface::Ptr findSystemTypeface()
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{
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CFUniquePtr<CTFontRef> defaultCtFont (CTFontCreateUIFontForLanguage (kCTFontUIFontSystem, 0.0, nullptr));
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const CFUniquePtr<CFStringRef> newName { CTFontCopyFamilyName (defaultCtFont.get()) };
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const CFUniquePtr<CTFontDescriptorRef> descriptor { CTFontCopyFontDescriptor (defaultCtFont.get()) };
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const CFUniquePtr<CFStringRef> newStyle { (CFStringRef) CTFontDescriptorCopyAttribute (descriptor.get(),
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kCTFontStyleNameAttribute) };
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HbFont result { hb_coretext_font_create (defaultCtFont.get()) };
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if (result == nullptr)
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return {};
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return new CoreTextTypeface { std::move (defaultCtFont),
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std::move (result),
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String::fromCFString (newName.get()),
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String::fromCFString (newStyle.get()),
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{} };
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}
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private:
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CoreTextTypeface (CFUniquePtr<CTFontRef> nativeFont,
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HbFont fontIn,
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const String& name,
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const String& style,
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MemoryBlock data = {})
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: Typeface (name, style),
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ctFont (std::move (nativeFont)),
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hb (std::move (fontIn)),
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storage (std::move (data))
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{
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if (! storage.isEmpty())
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getRegistered().add (ctFont.get());
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}
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static String findBestAvailableStyle (const Font& font)
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{
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const auto availableStyles = Font::findAllTypefaceStyles (font.getTypefaceName());
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const auto style = font.getTypefaceStyle();
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if (availableStyles.contains (style))
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return style;
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return availableStyles[0];
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}
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// We store this, rather than calling hb_coretext_font_get_ct_font, because harfbuzz may
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// override the font cascade list in the returned font.
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CFUniquePtr<CTFontRef> ctFont;
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HbFont hb;
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MemoryBlock storage;
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TypefaceAscentDescent nonPortableMetrics = [&]
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{
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const CFUniquePtr<CGFontRef> cgFont { CTFontCopyGraphicsFont (ctFont.get(), nullptr) };
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const auto upem = (float) CGFontGetUnitsPerEm (cgFont.get());
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return TypefaceAscentDescent { (float) std::abs (CGFontGetAscent (cgFont.get()) / upem),
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(float) std::abs (CGFontGetDescent (cgFont.get()) / upem) };
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}();
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (CoreTextTypeface)
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};
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//==============================================================================
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Typeface::Ptr Typeface::createSystemTypefaceFor (const Font& font)
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{
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return CoreTextTypeface::from (font);
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}
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Typeface::Ptr Typeface::createSystemTypefaceFor (Span<const std::byte> data)
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{
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return CoreTextTypeface::from (data);
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}
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void Typeface::scanFolderForFonts (const File& folder)
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{
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for (auto& file : folder.findChildFiles (File::findFiles, false, "*.otf;*.ttf"))
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if (auto urlref = CFUniquePtr<CFURLRef> (CFURLCreateWithFileSystemPath (kCFAllocatorDefault, file.getFullPathName().toCFString(), kCFURLPOSIXPathStyle, true)))
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CTFontManagerRegisterFontsForURL (urlref.get(), kCTFontManagerScopeProcess, nullptr);
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}
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Typeface::Ptr Typeface::findSystemTypeface()
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{
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return CoreTextTypeface::findSystemTypeface();
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}
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StringArray Font::findAllTypefaceNames()
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{
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StringArray names;
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// The collection returned from CTFontCollectionCreateFromAvailableFonts doesn't include fonts registered by
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// CTFontManagerRegisterGraphicsFont on iOS, so we need to keep track of registered fonts ourselves.
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auto nameSet = CoreTextTypeface::getRegisteredFamilies();
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CFUniquePtr<CTFontCollectionRef> fontCollectionRef (CTFontCollectionCreateFromAvailableFonts (nullptr));
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CFUniquePtr<CFArrayRef> fontDescriptorArray (CTFontCollectionCreateMatchingFontDescriptors (fontCollectionRef.get()));
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for (CFIndex i = 0; i < CFArrayGetCount (fontDescriptorArray.get()); ++i)
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{
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auto ctFontDescriptorRef = (CTFontDescriptorRef) CFArrayGetValueAtIndex (fontDescriptorArray.get(), i);
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CFUniquePtr<CFStringRef> cfsFontFamily ((CFStringRef) CTFontDescriptorCopyAttribute (ctFontDescriptorRef, kCTFontFamilyNameAttribute));
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nameSet.insert (String::fromCFString (cfsFontFamily.get()));
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}
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for (auto& item : nameSet)
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names.add (item);
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return names;
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}
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StringArray Font::findAllTypefaceStyles (const String& family)
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{
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if (FontStyleHelpers::isPlaceholderFamilyName (family))
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return findAllTypefaceStyles (FontStyleHelpers::getConcreteFamilyNameFromPlaceholder (family));
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StringArray results;
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CFUniquePtr<CFStringRef> cfsFontFamily (family.toCFString());
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CFStringRef keys[] { kCTFontFamilyNameAttribute };
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CFTypeRef values[] { cfsFontFamily.get() };
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CFUniquePtr<CFDictionaryRef> fontDescAttributes (CFDictionaryCreate (nullptr, (const void**) &keys, (const void**) &values, numElementsInArray (keys),
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&kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
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CFUniquePtr<CTFontDescriptorRef> ctFontDescRef (CTFontDescriptorCreateWithAttributes (fontDescAttributes.get()));
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CFUniquePtr<CFArrayRef> fontFamilyArray (CFArrayCreate (kCFAllocatorDefault, (const void**) &ctFontDescRef, 1, &kCFTypeArrayCallBacks));
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CFUniquePtr<CTFontCollectionRef> fontCollectionRef (CTFontCollectionCreateWithFontDescriptors (fontFamilyArray.get(), nullptr));
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if (auto fontDescriptorArray = CFUniquePtr<CFArrayRef> (CTFontCollectionCreateMatchingFontDescriptors (fontCollectionRef.get())))
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{
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for (CFIndex i = 0; i < CFArrayGetCount (fontDescriptorArray.get()); ++i)
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{
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auto ctFontDescriptorRef = (CTFontDescriptorRef) CFArrayGetValueAtIndex (fontDescriptorArray.get(), i);
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CFUniquePtr<CFStringRef> cfsFontStyle ((CFStringRef) CTFontDescriptorCopyAttribute (ctFontDescriptorRef, kCTFontStyleNameAttribute));
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results.add (String::fromCFString (cfsFontStyle.get()));
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}
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}
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return results;
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}
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struct DefaultFontNames
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{
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#if JUCE_IOS
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String defaultSans { "Helvetica" },
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defaultSerif { "Times New Roman" },
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defaultFixed { "Courier New" };
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#else
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String defaultSans { "Lucida Grande" },
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defaultSerif { "Times New Roman" },
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defaultFixed { "Menlo" };
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#endif
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};
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Typeface::Ptr Font::Native::getDefaultPlatformTypefaceForFont (const Font& font)
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{
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static DefaultFontNames defaultNames;
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auto newFont = font;
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auto faceName = font.getTypefaceName();
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if (faceName == getDefaultSansSerifFontName()) newFont.setTypefaceName (defaultNames.defaultSans);
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else if (faceName == getDefaultSerifFontName()) newFont.setTypefaceName (defaultNames.defaultSerif);
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else if (faceName == getDefaultMonospacedFontName()) newFont.setTypefaceName (defaultNames.defaultFixed);
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if (font.getTypefaceStyle() == getDefaultStyle())
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newFont.setTypefaceStyle ("Regular");
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return Typeface::createSystemTypefaceFor (newFont);
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}
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} // namespace juce
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