core-graphics 0.10.0

// Copyright 2013 The Servo Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

use core_foundation::base::{CFRelease, CFRetain, CFTypeID, TCFType};
use core_foundation::string::{CFString, CFStringRef};
use data_provider::CGDataProvider;

use foreign_types::ForeignType;

use libc;

pub type CGGlyph = libc::c_ushort;

foreign_type! {
    #[doc(hidden)]
    type CType = ::sys::CGFont;
    fn drop = |p| CFRelease(p as *mut _);
    fn clone = |p| CFRetain(p as *const _) as *mut _;
    pub struct CGFont;
    pub struct CGFontRef;
}

unsafe impl Send for CGFont {}
unsafe impl Sync for CGFont {}

impl CGFont {
    pub fn type_id() -> CFTypeID {
        unsafe {
            CGFontGetTypeID()
        }
    }

    pub fn from_data_provider(provider: CGDataProvider) -> Result<CGFont, ()> {
        unsafe {
            let font_ref = CGFontCreateWithDataProvider(provider.as_ptr());
            if !font_ref.is_null() {
                Ok(CGFont::from_ptr(font_ref))
            } else {
                Err(())
            }
        }
    }

    pub fn from_name(name: &CFString) -> Result<CGFont, ()> {
        unsafe {
            let font_ref = CGFontCreateWithFontName(name.as_concrete_TypeRef());
            if !font_ref.is_null() {
                Ok(CGFont::from_ptr(font_ref))
            } else {
                Err(())
            }
        }
    }

    pub fn postscript_name(&self) -> CFString {
        unsafe {
            let string_ref = CGFontCopyPostScriptName(self.as_ptr());
            TCFType::wrap_under_create_rule(string_ref)
        }
    }
}

#[link(name = "ApplicationServices", kind = "framework")]
extern {
    // TODO: basically nothing has bindings (even commented-out) besides what we use.
    fn CGFontCreateWithDataProvider(provider: ::sys::CGDataProviderRef) -> ::sys::CGFontRef;
    fn CGFontCreateWithFontName(name: CFStringRef) -> ::sys::CGFontRef;
    fn CGFontGetTypeID() -> CFTypeID;

    fn CGFontCopyPostScriptName(font: ::sys::CGFontRef) -> CFStringRef;

    // These do the same thing as CFRetain/CFRelease, except
    // gracefully handle a NULL argument. We don't use them.
    //fn CGFontRetain(font: ::sys::CGFontRef);
    //fn CGFontRelease(font: ::sys::CGFontRef);
}