Add CTFontManagerCreateFontDescriptorFromData for avoid CGFont

core-text/src/font.rs

@@ -12,6 +12,7 @@
 use font_descriptor;
 use font_descriptor::{CTFontDescriptor, CTFontDescriptorRef, CTFontOrientation};
 use font_descriptor::{CTFontSymbolicTraits, CTFontTraits, SymbolicTraitAccessors, TraitAccessors};
+use font_manager::{create_font_descriptor, CTFontManagerIsSupportedFont};
 
 use core_foundation::array::{CFArray, CFArrayRef};
 use core_foundation::base::{CFIndex, CFOptionFlags, CFType, CFTypeID, CFTypeRef, TCFType};
@@ -30,6 +31,7 @@ use foreign_types::ForeignType;
 use libc::{self, size_t};
 use std::os::raw::c_void;
 use std::ptr;
+use std::path::Path;
 
 type CGContextRef = *mut <CGContext as ForeignType>::CType;
 type CGFontRef = *mut <CGFont as ForeignType>::CType;
@@ -124,6 +126,11 @@ pub fn new_from_descriptor(desc: &CTFontDescriptor, pt_size: f64) -> CTFont {
     }
 }
 
+pub fn new_from_buffer(buffer: &[u8]) -> Result<CTFont, ()> {
+    let ct_font_descriptor = create_font_descriptor(buffer)?;
+    Ok(new_from_descriptor(&ct_font_descriptor, 16.0))
+}
+
 pub fn new_from_name(name: &str, pt_size: f64) -> Result<CTFont, ()> {
     unsafe {
         let name: CFString = name.parse().unwrap();

core-text/src/font_manager.rs

@@ -11,6 +11,8 @@ use core_foundation::array::{CFArray, CFArrayRef};
 use core_foundation::base::TCFType;
 use core_foundation::string::CFString;
 use core_foundation::url::CFURLRef;
+use core_foundation::data::{CFDataRef, CFData};
+use crate::font_descriptor::{CTFontDescriptorRef, CTFontDescriptor};
 
 pub fn copy_available_font_family_names() -> CFArray<CFString> {
     unsafe {
@@ -18,6 +20,17 @@ pub fn copy_available_font_family_names() -> CFArray<CFString> {
     }
 }
 
+pub fn create_font_descriptor(buffer: &[u8]) -> Result<CTFontDescriptor, ()> {
+    let cf_data = CFData::from_buffer(buffer);
+    unsafe {
+        let ct_font_descriptor_ref = CTFontManagerCreateFontDescriptorFromData(cf_data.as_concrete_TypeRef());
+        if ct_font_descriptor_ref.is_null() {
+            return Err(());
+        }
+        Ok(CTFontDescriptor::wrap_under_create_rule(ct_font_descriptor_ref))
+    }
+}
+
 extern {
     /*
      * CTFontManager.h
@@ -31,6 +44,7 @@ extern {
     pub fn CTFontManagerCopyAvailableFontFamilyNames() -> CFArrayRef;
     pub fn CTFontManagerCopyAvailablePostScriptNames() -> CFArrayRef;
     pub fn CTFontManagerCreateFontDescriptorsFromURL(fileURL: CFURLRef) -> CFArrayRef;
+    pub fn CTFontManagerCreateFontDescriptorFromData(data: CFDataRef) -> CTFontDescriptorRef;
     //pub fn CTFontManagerCreateFontRequestRunLoopSource
     //pub fn CTFontManagerEnableFontDescriptors
     //pub fn CTFontManagerGetAutoActivationSetting