Expose the CTFont-creation functions with options parameter (#636)

Author: jfkthame

core-text/src/font.rs

@@ -180,6 +180,18 @@ pub fn new_from_descriptor(desc: &CTFontDescriptor, pt_size: f64) -> CTFont {
     }
 }
 
+pub fn new_from_descriptor_and_options(desc: &CTFontDescriptor, pt_size: f64, options: CTFontOptions) -> CTFont {
+    unsafe {
+        let font_ref = CTFontCreateWithFontDescriptorAndOptions(
+            desc.as_concrete_TypeRef(),
+            pt_size as CGFloat,
+            ptr::null(),
+            options,
+        );
+        CTFont::wrap_under_create_rule(font_ref)
+    }
+}
+
 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))
@@ -198,6 +210,19 @@ pub fn new_from_name(name: &str, pt_size: f64) -> Result<CTFont, ()> {
     }
 }
 
+pub fn new_from_name_and_options(name: &str, pt_size: f64, options: CTFontOptions) -> Result<CTFont, ()> {
+    unsafe {
+        let name: CFString = name.parse().unwrap();
+        let font_ref =
+            CTFontCreateWithNameAndOptions(name.as_concrete_TypeRef(), pt_size as CGFloat, ptr::null(), options);
+        if font_ref.is_null() {
+            Err(())
+        } else {
+            Ok(CTFont::wrap_under_create_rule(font_ref))
+        }
+    }
+}
+
 pub fn new_ui_font_for_language(
     ui_type: CTFontUIFontType,
     size: f64,
@@ -611,13 +636,23 @@ extern "C" {
         size: CGFloat,
         matrix: *const CGAffineTransform,
     ) -> CTFontRef;
-    //fn CTFontCreateWithNameAndOptions
+    fn CTFontCreateWithNameAndOptions(
+        name: CFStringRef,
+        size: CGFloat,
+        matrix: *const CGAffineTransform,
+        options: CTFontOptions,
+    ) -> CTFontRef;
     fn CTFontCreateWithFontDescriptor(
         descriptor: CTFontDescriptorRef,
         size: CGFloat,
         matrix: *const CGAffineTransform,
     ) -> CTFontRef;
-    //fn CTFontCreateWithFontDescriptorAndOptions
+    fn CTFontCreateWithFontDescriptorAndOptions(
+        descriptor: CTFontDescriptorRef,
+        size: CGFloat,
+        matrix: *const CGAffineTransform,
+        options: CTFontOptions,
+    ) -> CTFontRef;
     fn CTFontCreateUIFontForLanguage(
         uiType: CTFontUIFontType,
         size: CGFloat,