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Android: Use AFontMatcher to locate generic system fonts on supported platforms

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reuk 2025-03-27 22:52:37 +00:00
parent f9fc03eb2b
commit 1c9947b80e
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1 changed files with 59 additions and 42 deletions
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101
modules/juce_graphics/native/juce_Fonts_android.cpp
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@ -35,23 +35,6 @@
namespace juce
{
Typeface::Ptr Font::Native::getDefaultPlatformTypefaceForFont (const Font& font)
{
Font f (font);
f.setTypefaceName ([&]() -> String
{
const auto faceName = font.getTypefaceName();
if (faceName == Font::getDefaultSansSerifFontName()) return "Roboto";
if (faceName == Font::getDefaultSerifFontName()) return "Roboto";
if (faceName == Font::getDefaultMonospacedFontName()) return "Roboto";
return faceName;
}());
return Typeface::createSystemTypefaceFor (f);
}
//==============================================================================
#define JNI_CLASS_MEMBERS(METHOD, STATICMETHOD, FIELD, STATICFIELD, CALLBACK) \
STATICMETHOD (create, "create", "(Ljava/lang/String;I)Landroid/graphics/Typeface;") \
@ -100,6 +83,11 @@ DECLARE_JNI_CLASS (JavaMessageDigest, "java/security/MessageDigest")
DECLARE_JNI_CLASS (AndroidAssetManager, "android/content/res/AssetManager")
#undef JNI_CLASS_MEMBERS
#define JUCE_INTRODUCED_IN_29 \
JUCE_BEGIN_IGNORE_WARNINGS_GCC_LIKE("-Wgnu-zero-variadic-macro-arguments") \
__INTRODUCED_IN (29) \
JUCE_END_IGNORE_WARNINGS_GCC_LIKE
// Defined in juce_core
std::unique_ptr<InputStream> makeAndroidInputStreamWrapper (LocalRef<jobject> stream);
@ -313,6 +301,23 @@ public:
return from (FontOptions{}.withName ("Roboto"));
}
static JUCE_INTRODUCED_IN_29 Typeface::Ptr findGenericTypefaceWithMatcher (const char* name)
{
using AFontMatcherPtr = std::unique_ptr<AFontMatcher, FunctionPointerDestructor<AFontMatcher_destroy>>;
using AFontPtr = std::unique_ptr<AFont, FunctionPointerDestructor<AFont_close>>;
constexpr uint16_t testString[] { 't', 'e', 's', 't' };
const AFontMatcherPtr matcher { AFontMatcher_create() };
const AFontPtr matched { AFontMatcher_match (matcher.get(),
name,
testString,
std::size (testString),
nullptr) };
return fromMatchedFont (matched.get());
}
private:
enum class DoCache
{
@ -320,14 +325,7 @@ private:
yes
};
// The definition of __BIONIC_AVAILABILITY was changed in NDK 28.1 and it now has variadic
// parameters.
//
// But __INTRODUCED_IN only has one parameter so there isn't even a way to pass on anything to
// to __BIONIC_AVAILABILITY.
JUCE_BEGIN_IGNORE_WARNINGS_GCC_LIKE ("-Wgnu-zero-variadic-macro-arguments")
static __INTRODUCED_IN (29) Typeface::Ptr fromMatchedFont (AFont* matched)
static JUCE_INTRODUCED_IN_29 Typeface::Ptr fromMatchedFont (AFont* matched)
{
if (matched == nullptr)
{
@ -348,24 +346,12 @@ private:
return cache->get ({ matchedFile, (int) matchedIndex }, &loadCompatibleFont);
}
static __INTRODUCED_IN (29) Typeface::Ptr findSystemTypefaceWithMatcher()
static JUCE_INTRODUCED_IN_29 Typeface::Ptr findSystemTypefaceWithMatcher()
{
using AFontMatcherPtr = std::unique_ptr<AFontMatcher, FunctionPointerDestructor<AFontMatcher_destroy>>;
using AFontPtr = std::unique_ptr<AFont, FunctionPointerDestructor<AFont_close>>;
constexpr uint16_t testString[] { 't', 'e', 's', 't' };
const AFontMatcherPtr matcher { AFontMatcher_create() };
const AFontPtr matched { AFontMatcher_match (matcher.get(),
"system-ui",
testString,
std::size (testString),
nullptr) };
return fromMatchedFont (matched.get());
return findGenericTypefaceWithMatcher ("system-ui");
}
__INTRODUCED_IN (29) Typeface::Ptr matchWithAFontMatcher (const String& text, const String& language) const
JUCE_INTRODUCED_IN_29 Typeface::Ptr matchWithAFontMatcher (const String& text, const String& language) const
{
using AFontMatcherPtr = std::unique_ptr<AFontMatcher, FunctionPointerDestructor<AFontMatcher_destroy>>;
using AFontPtr = std::unique_ptr<AFont, FunctionPointerDestructor<AFont_close>>;
@ -391,8 +377,6 @@ private:
return fromMatchedFont (matched.get());
}
JUCE_END_IGNORE_WARNINGS_GCC_LIKE
static bool shouldStoreAndroidFont (hb_face_t* face)
{
return (hb_ot_color_has_svg (face) || hb_ot_color_has_paint (face))
@ -803,4 +787,37 @@ void Typeface::scanFolderForFonts (const File&)
jassertfalse; // not currently available
}
//==============================================================================
Typeface::Ptr Font::Native::getDefaultPlatformTypefaceForFont (const Font& font)
{
const auto faceName = font.getTypefaceName();
const auto idealFace = std::invoke ([&]() -> Typeface::Ptr
{
if (__builtin_available (android 29, *))
{
if (faceName == Font::getDefaultSansSerifFontName()) return AndroidTypeface::findGenericTypefaceWithMatcher ("sans-serif");
if (faceName == Font::getDefaultSerifFontName()) return AndroidTypeface::findGenericTypefaceWithMatcher ("serif");
if (faceName == Font::getDefaultMonospacedFontName()) return AndroidTypeface::findGenericTypefaceWithMatcher ("monospace");
}
return nullptr;
});
if (idealFace != nullptr)
return idealFace;
Font f (font);
f.setTypefaceName (std::invoke ([&]() -> String
{
if (faceName == Font::getDefaultSansSerifFontName()) return "Roboto";
if (faceName == Font::getDefaultSerifFontName()) return "Roboto";
if (faceName == Font::getDefaultMonospacedFontName()) return "Roboto";
return faceName;
}));
return Typeface::createSystemTypefaceFor (f);
}
} // namespace juce