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// 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
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use core_foundation::base::{CFRelease, CFRetain, CFType, CFTypeID, TCFType};
use core_foundation::array::{CFArray, CFArrayRef};
use core_foundation::data::{CFData, CFDataRef};
use core_foundation::number::CFNumber;
use core_foundation::string::{CFString, CFStringRef};
use core_foundation::dictionary::{CFDictionary, CFDictionaryRef};
use data_provider::CGDataProvider;
use geometry::CGRect;
use std::ptr::NonNull;
use foreign_types::ForeignType;
use libc::{c_int, size_t};
pub use core_graphics_types::base::CGGlyph;
foreign_type! {
#[doc(hidden)]
pub unsafe type CGFont: Send + Sync {
type CType = ::sys::CGFont;
fn drop = |p| CFRelease(p as *mut _);
fn clone = |p| CFRetain(p as *const _) as *mut _;
}
}
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());
match NonNull::new(font_ref) {
Some(font_ref) => Ok(CGFont(font_ref)),
None => Err(()),
}
}
}
pub fn from_name(name: &CFString) -> Result<CGFont, ()> {
unsafe {
let font_ref = CGFontCreateWithFontName(name.as_concrete_TypeRef());
match NonNull::new(font_ref) {
Some(font_ref) => Ok(CGFont(font_ref)),
None => Err(()),
}
}
}
pub fn create_copy_from_variations(&self, vars: &CFDictionary<CFString, CFNumber>) -> Result<CGFont, ()> {
unsafe {
let font_ref = CGFontCreateCopyWithVariations(self.as_ptr(),
vars.as_concrete_TypeRef());
match NonNull::new(font_ref) {
Some(font_ref) => Ok(CGFont(font_ref)),
None => Err(()),
}
}
}
pub fn postscript_name(&self) -> CFString {
unsafe {
let string_ref = CGFontCopyPostScriptName(self.as_ptr());
TCFType::wrap_under_create_rule(string_ref)
}
}
pub fn get_glyph_b_boxes(&self, glyphs: &[CGGlyph], bboxes: &mut [CGRect]) -> bool {
unsafe {
assert!(bboxes.len() >= glyphs.len());
CGFontGetGlyphBBoxes(self.as_ptr(),
glyphs.as_ptr(),
glyphs.len(),
bboxes.as_mut_ptr())
}
}
pub fn get_glyph_advances(&self, glyphs: &[CGGlyph], advances: &mut [c_int]) -> bool {
unsafe {
assert!(advances.len() >= glyphs.len());
CGFontGetGlyphAdvances(self.as_ptr(),
glyphs.as_ptr(),
glyphs.len(),
advances.as_mut_ptr())
}
}
pub fn get_units_per_em(&self) -> c_int {
unsafe {
CGFontGetUnitsPerEm(self.as_ptr())
}
}
pub fn copy_table_tags(&self) -> CFArray<u32> {
unsafe {
TCFType::wrap_under_create_rule(CGFontCopyTableTags(self.as_ptr()))
}
}
pub fn copy_table_for_tag(&self, tag: u32) -> Option<CFData> {
let data_ref = unsafe { CGFontCopyTableForTag(self.as_ptr(), tag) };
if !data_ref.is_null() {
Some(unsafe { TCFType::wrap_under_create_rule(data_ref) })
} else {
None
}
}
pub fn copy_variations(&self) -> Option<CFDictionary<CFString, CFNumber>> {
let variations = unsafe { CGFontCopyVariations(self.as_ptr()) };
if !variations.is_null() {
Some(unsafe { TCFType::wrap_under_create_rule(variations) })
} else {
None
}
}
pub fn copy_variation_axes(&self) -> Option<CFArray<CFDictionary<CFString, CFType>>> {
let axes = unsafe { CGFontCopyVariationAxes(self.as_ptr()) };
if !axes.is_null() {
Some(unsafe { TCFType::wrap_under_create_rule(axes) })
} else {
None
}
}
}
#[link(name = "CoreGraphics", 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 CGFontCreateCopyWithVariations(font: ::sys::CGFontRef, vars: CFDictionaryRef) -> ::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);
fn CGFontGetGlyphBBoxes(font: ::sys::CGFontRef,
glyphs: *const CGGlyph,
count: size_t,
bboxes: *mut CGRect)
-> bool;
fn CGFontGetGlyphAdvances(font: ::sys::CGFontRef,
glyphs: *const CGGlyph,
count: size_t,
advances: *mut c_int)
-> bool;
fn CGFontGetUnitsPerEm(font: ::sys::CGFontRef) -> c_int;
fn CGFontCopyTableTags(font: ::sys::CGFontRef) -> CFArrayRef;
fn CGFontCopyTableForTag(font: ::sys::CGFontRef, tag: u32) -> CFDataRef;
fn CGFontCopyVariations(font: ::sys::CGFontRef) -> CFDictionaryRef;
fn CGFontCopyVariationAxes(font: ::sys::CGFontRef) -> CFArrayRef;
}