Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

24 files changed, 4002 insertions, 0 deletions

diff --git a/third_party/rust/core-graphics/.cargo-checksum.json b/third_party/rust/core-graphics/.cargo-checksum.json
new file mode 100644
index 0000000000..1702d09c38
--- /dev/null
+++ b/third_party/rust/core-graphics/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"COPYRIGHT":"ec82b96487e9e778ee610c7ab245162464782cfa1f555c2299333f8dbe5c036a","Cargo.toml":"3bd0c7d76d294587f2928231ecff8824cdafafded65561434d2698d1cc649cc7","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"62065228e42caebca7e7d7db1204cbb867033de5982ca4009928915e4095f3a3","README.md":"6745c3c38183d2eda9b1fa265fb0a95018db5c110cbabc00b32327d951bbe2ea","src/access.rs":"919937f8fe61966543c602e30d5d59d61e0b7313bb6b33c25aa600ec5e43345e","src/base.rs":"838683ff67253f4aff1d4b4177531210ca73d4e61f05c5d96a8f196b2a88c787","src/color.rs":"4c8ec4ab828cbc1b2a1538a34a51f5b380927f2f1daf187dff6f732f57a43656","src/color_space.rs":"6a0be06bb7ecdf9d20c461912359d22e0ffd7151c6977a8d9b3b0efdd7929442","src/context.rs":"93d543bd2b77ee6b3132b4378b1652576354fae9bb675cde63e0347d81fec334","src/data_provider.rs":"88e1cdd75c35cff44150f0aac75de6ac715acbf4328abef1b2f191b54401c650","src/display.rs":"391f24669ad1ad5dcd6d15b5e418b6b07731186d3c18d94c8c0935ab348fb3b9","src/event.rs":"90425316094ea2dba724451a1cb0f8008fce64ab746e79a28258a773c67f158b","src/event_source.rs":"a81f8bbd41bf4c4e3e91d6a6eab31356728fbf08787aca899ed03259808dfe4a","src/font.rs":"43cad7dfcc49f5f2de408146c6e38843b2d0092b3f5880fbf80e43e18b100f25","src/geometry.rs":"8e12dc89835406bfa514de8fb58f5fd435724d1ddb97dc3a70392efbcf1c42ed","src/gradient.rs":"dd957f14b77d448fa1e51c2e67849364062aa1d5bd60405f060f9a094c628061","src/image.rs":"72076f34a805b1d2336e425cc29d2ec3583046b847e9284ef7413f7eca2acb9a","src/lib.rs":"ca6aabcc5f307a9b15cd3e531d7fb9f54bdf58d9717d38e007e4facf1ca8c9a4","src/path.rs":"9389719ee257d86f50075b294b1b9df8fb3fc93b3442deee868e188489613a2d","src/private.rs":"da3fd61338bab2d8e26aa5433b2e18ecd2a0a408c62e1ac2b33a0f87f2dad88a","src/sys.rs":"3077395beb77193530b713aa681cb61f7b86fa79e4e4060133b6d61cf9f47e09","src/window.rs":"2f6c3dc958ae2c0c9e2fc5033300b96e60ed0abee9823ea1f03797d64df0911a"},"package":"970a29baf4110c26fedbc7f82107d42c23f7e88e404c4577ed73fe99ff85a212"}
\ No newline at end of file
diff --git a/third_party/rust/core-graphics/COPYRIGHT b/third_party/rust/core-graphics/COPYRIGHT
new file mode 100644
index 0000000000..8b7291ad28
--- /dev/null
+++ b/third_party/rust/core-graphics/COPYRIGHT
@@ -0,0 +1,5 @@
+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. All files in the project carrying such notice may not be
+copied, modified, or distributed except according to those terms.
diff --git a/third_party/rust/core-graphics/Cargo.toml b/third_party/rust/core-graphics/Cargo.toml
new file mode 100644
index 0000000000..c5ce8bc38f
--- /dev/null
+++ b/third_party/rust/core-graphics/Cargo.toml
@@ -0,0 +1,43 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+name = "core-graphics"
+version = "0.23.1"
+authors = ["The Servo Project Developers"]
+description = "Bindings to Core Graphics for macOS"
+homepage = "https://github.com/servo/core-foundation-rs"
+readme = "README.md"
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/servo/core-foundation-rs"
+
+[package.metadata.docs.rs]
+default-target = "x86_64-apple-darwin"
+
+[dependencies.bitflags]
+version = "1.0"
+
+[dependencies.core-foundation]
+version = "0.9"
+
+[dependencies.core-graphics-types]
+version = "0.1"
+
+[dependencies.foreign-types]
+version = "0.5.0"
+
+[dependencies.libc]
+version = "0.2"
+
+[features]
+default = []
+elcapitan = []
+highsierra = []
diff --git a/third_party/rust/core-graphics/LICENSE-APACHE b/third_party/rust/core-graphics/LICENSE-APACHE
new file mode 100644
index 0000000000..16fe87b06e
--- /dev/null
+++ b/third_party/rust/core-graphics/LICENSE-APACHE
@@ -0,0 +1,201 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
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diff --git a/third_party/rust/core-graphics/LICENSE-MIT b/third_party/rust/core-graphics/LICENSE-MIT
new file mode 100644
index 0000000000..807526f57f
--- /dev/null
+++ b/third_party/rust/core-graphics/LICENSE-MIT
@@ -0,0 +1,25 @@
+Copyright (c) 2012-2013 Mozilla Foundation
+
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/third_party/rust/core-graphics/README.md b/third_party/rust/core-graphics/README.md
new file mode 100644
index 0000000000..22175688cd
--- /dev/null
+++ b/third_party/rust/core-graphics/README.md
@@ -0,0 +1,3 @@
+# core-graphics-rs
+
+[![Build Status](https://travis-ci.com/servo/core-graphics-rs.svg?branch=master)](https://travis-ci.com/servo/core-graphics-rs)
diff --git a/third_party/rust/core-graphics/src/access.rs b/third_party/rust/core-graphics/src/access.rs
new file mode 100644
index 0000000000..4e852c85ae
--- /dev/null
+++ b/third_party/rust/core-graphics/src/access.rs
@@ -0,0 +1,26 @@
+pub use base::boolean_t;
+
+#[derive(Default)]
+pub struct ScreenCaptureAccess;
+
+impl ScreenCaptureAccess {
+    /// If current app not in list, will open window.
+    /// Return the same result as preflight.
+    #[inline]
+    pub fn request(&self) -> bool {
+        unsafe { CGRequestScreenCaptureAccess() == 1 }
+    }
+
+    /// Return true if has access
+    #[inline]
+    pub fn preflight(&self) -> bool {
+        unsafe { CGPreflightScreenCaptureAccess() == 1 }
+    }
+}
+
+#[link(name = "CoreGraphics", kind = "framework")]
+extern "C" {
+    // Screen Capture Access
+    fn CGRequestScreenCaptureAccess() -> boolean_t;
+    fn CGPreflightScreenCaptureAccess() -> boolean_t;
+}
diff --git a/third_party/rust/core-graphics/src/base.rs b/third_party/rust/core-graphics/src/base.rs
new file mode 100644
index 0000000000..25baf89153
--- /dev/null
+++ b/third_party/rust/core-graphics/src/base.rs
@@ -0,0 +1,45 @@
+// 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.
+
+// this file defines CGFloat, as well as stubbed data types.
+
+#![allow(non_camel_case_types)]
+#![allow(non_upper_case_globals)]
+
+pub use core_graphics_types::base::*;
+
+pub const kCGImageAlphaNone: u32 = 0;
+pub const kCGImageAlphaPremultipliedLast: u32 = 1;
+pub const kCGImageAlphaPremultipliedFirst: u32 = 2;
+pub const kCGImageAlphaLast: u32 = 3;
+pub const kCGImageAlphaFirst: u32 = 4;
+pub const kCGImageAlphaNoneSkipLast: u32 = 5;
+pub const kCGImageAlphaNoneSkipFirst: u32 = 6;
+
+pub const kCGBitmapByteOrderDefault: u32 = 0 << 12;
+pub const kCGBitmapByteOrder16Little: u32 = 1 << 12;
+pub const kCGBitmapByteOrder32Little: u32 = 2 << 12;
+pub const kCGBitmapByteOrder16Big: u32 = 3 << 12;
+pub const kCGBitmapByteOrder32Big: u32 = 4 << 12;
+
+pub const kCGRenderingIntentDefault: u32 = 0;
+pub const kCGRenderingIntentAbsoluteColorimetric: u32 = 1;
+pub const kCGRenderingIntentRelativeColorimetric: u32 = 2;
+pub const kCGRenderingIntentPerceptual: u32 = 3;
+pub const kCGRenderingIntentSaturation: u32 = 4;
+
+#[cfg(target_endian = "big")]
+pub const kCGBitmapByteOrder16Host: u32 = kCGBitmapByteOrder16Big;
+#[cfg(target_endian = "big")]
+pub const kCGBitmapByteOrder32Host: u32 = kCGBitmapByteOrder32Big;
+
+#[cfg(target_endian = "little")]
+pub const kCGBitmapByteOrder16Host: u32 = kCGBitmapByteOrder16Little;
+#[cfg(target_endian = "little")]
+pub const kCGBitmapByteOrder32Host: u32 = kCGBitmapByteOrder32Little;
diff --git a/third_party/rust/core-graphics/src/color.rs b/third_party/rust/core-graphics/src/color.rs
new file mode 100644
index 0000000000..79ef9a0072
--- /dev/null
+++ b/third_party/rust/core-graphics/src/color.rs
@@ -0,0 +1,35 @@
+// 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::{CFTypeID};
+use base::CGFloat;
+use core_foundation::base::TCFType;
+use super::sys::{CGColorRef};
+
+pub use super::sys::CGColorRef as SysCGColorRef;
+
+declare_TCFType!{
+    CGColor, CGColorRef
+}
+impl_TCFType!(CGColor, CGColorRef, CGColorGetTypeID);
+
+impl CGColor {
+    pub fn rgb(red: CGFloat, green: CGFloat, blue: CGFloat, alpha: CGFloat) -> Self {
+        unsafe { 
+            let ptr = CGColorCreateGenericRGB(red, green, blue, alpha);
+            CGColor::wrap_under_create_rule(ptr)
+        }
+    }
+}
+
+#[link(name = "CoreGraphics", kind = "framework")]
+extern {
+    fn CGColorCreateGenericRGB(red: CGFloat, green: CGFloat, blue: CGFloat, alpha: CGFloat) -> ::sys::CGColorRef;
+    fn CGColorGetTypeID() -> CFTypeID;
+}
diff --git a/third_party/rust/core-graphics/src/color_space.rs b/third_party/rust/core-graphics/src/color_space.rs
new file mode 100644
index 0000000000..2b29635756
--- /dev/null
+++ b/third_party/rust/core-graphics/src/color_space.rs
@@ -0,0 +1,117 @@
+// Copyright 2015 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};
+use core_foundation::string::CFStringRef;
+use foreign_types::ForeignType;
+
+foreign_type! {
+    #[doc(hidden)]
+    pub unsafe type CGColorSpace {
+        type CType = ::sys::CGColorSpace;
+        fn drop = |p| CFRelease(p as *mut _);
+        fn clone = |p| CFRetain(p as *const _) as *mut _;
+    }
+}
+
+impl CGColorSpace {
+    pub fn type_id() -> CFTypeID {
+        unsafe {
+            CGColorSpaceGetTypeID()
+        }
+    }
+
+    pub fn create_with_name(name: CFStringRef) -> Option<CGColorSpace> {
+        unsafe {
+            let p = CGColorSpaceCreateWithName(name);
+            if !p.is_null() {Some(CGColorSpace::from_ptr(p))} else {None}
+        }
+    }
+
+    #[inline]
+    pub fn create_device_rgb() -> CGColorSpace {
+        unsafe {
+            let result = CGColorSpaceCreateDeviceRGB();
+            CGColorSpace::from_ptr(result)
+        }
+    }
+
+    #[inline]
+    pub fn create_device_gray() -> CGColorSpace {
+        unsafe {
+            let result = CGColorSpaceCreateDeviceGray();
+            CGColorSpace::from_ptr(result)
+        }
+    }
+}
+
+#[link(name = "CoreGraphics", kind = "framework")]
+extern {
+    /// The Display P3 color space, created by Apple.
+    pub static kCGColorSpaceDisplayP3: CFStringRef;
+    /// The Display P3 color space, using the HLG transfer function.
+    pub static kCGColorSpaceDisplayP3_HLG: CFStringRef;
+    /// The Display P3 color space with a linear transfer function
+    /// and extended-range values.
+    pub static kCGColorSpaceExtendedLinearDisplayP3: CFStringRef;
+    /// The standard Red Green Blue (sRGB) color space.
+    pub static kCGColorSpaceSRGB: CFStringRef;
+    /// The sRGB color space with a linear transfer function.
+    pub static kCGColorSpaceLinearSRGB: CFStringRef;
+    /// The extended sRGB color space.
+    pub static kCGColorSpaceExtendedSRGB: CFStringRef;
+    /// The sRGB color space with a linear transfer function and
+    /// extended-range values.
+    pub static kCGColorSpaceExtendedLinearSRGB: CFStringRef;
+    /// The generic gray color space that has an exponential transfer
+    /// function with a power of 2.2.
+    pub static kCGColorSpaceGenericGrayGamma2_2: CFStringRef;
+    /// The gray color space using a linear transfer function.
+    pub static kCGColorSpaceLinearGray: CFStringRef;
+    /// The extended gray color space.
+    pub static kCGColorSpaceExtendedGray: CFStringRef;
+    /// The extended gray color space with a linear transfer function.
+    pub static kCGColorSpaceExtendedLinearGray: CFStringRef;
+    /// The generic RGB color space with a linear transfer function.
+    pub static kCGColorSpaceGenericRGBLinear: CFStringRef;
+    /// The generic CMYK color space.
+    pub static kCGColorSpaceGenericCMYK: CFStringRef;
+    /// The XYZ color space, as defined by the CIE 1931 standard.
+    pub static kCGColorSpaceGenericXYZ: CFStringRef;
+    /// The generic LAB color space.
+    pub static kCGColorSpaceGenericLab: CFStringRef;
+    /// The ACEScg color space.
+    pub static kCGColorSpaceACESCGLinear: CFStringRef;
+    /// The Adobe RGB (1998) color space.
+    pub static kCGColorSpaceAdobeRGB1998: CFStringRef;
+    /// The DCI P3 color space, which is the digital cinema standard.
+    pub static kCGColorSpaceDCIP3: CFStringRef;
+    /// The recommendation of the International Telecommunication Union
+    /// (ITU) Radiocommunication sector for the BT.709 color space.
+    pub static kCGColorSpaceITUR_709: CFStringRef;
+    /// The Reference Output Medium Metric (ROMM) RGB color space.
+    pub static kCGColorSpaceROMMRGB: CFStringRef;
+    /// The recommendation of the International Telecommunication Union
+    /// (ITU) Radiocommunication sector for the BT.2020 color space.
+    pub static kCGColorSpaceITUR_2020: CFStringRef;
+    /// The recommendation of the International Telecommunication Union
+    /// (ITU) Radiocommunication sector for the BT.2020 color space, with
+    /// a linear transfer function and extended range values.
+    pub static kCGColorSpaceExtendedLinearITUR_2020: CFStringRef;
+    /// The name of the generic RGB color space.
+    pub static kCGColorSpaceGenericRGB: CFStringRef;
+    /// The name of the generic gray color space.
+    pub static kCGColorSpaceGenericGray: CFStringRef;
+
+    fn CGColorSpaceCreateDeviceRGB() -> ::sys::CGColorSpaceRef;
+    fn CGColorSpaceCreateDeviceGray() -> ::sys::CGColorSpaceRef;
+    fn CGColorSpaceCreateWithName(name: CFStringRef) -> ::sys::CGColorSpaceRef;
+    fn CGColorSpaceGetTypeID() -> CFTypeID;
+}
+
diff --git a/third_party/rust/core-graphics/src/context.rs b/third_party/rust/core-graphics/src/context.rs
new file mode 100644
index 0000000000..aca5fb74d5
--- /dev/null
+++ b/third_party/rust/core-graphics/src/context.rs
@@ -0,0 +1,790 @@
+// Copyright 2015 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 base::CGFloat;
+use color_space::CGColorSpace;
+use core_foundation::base::{CFTypeID, TCFType};
+use font::{CGFont, CGGlyph};
+use geometry::{CGPoint, CGSize};
+use gradient::{CGGradient, CGGradientDrawingOptions};
+use color::CGColor;
+use path::CGPathRef;
+use libc::{c_int, size_t};
+use std::os::raw::c_void;
+
+use std::cmp;
+use std::ptr;
+use std::slice;
+use geometry::{CGAffineTransform, CGRect};
+use image::CGImage;
+use foreign_types::{ForeignType, ForeignTypeRef};
+
+#[repr(C)]
+#[derive(Clone, Copy, Debug)]
+pub enum CGBlendMode {
+    Normal = 0,
+    Multiply,
+    Screen,
+    Overlay,
+    Darken,
+    Lighten,
+    ColorDodge,
+    ColorBurn,
+    SoftLight,
+    HardLight,
+    Difference,
+    Exclusion,
+    Hue,
+    Saturation,
+    Color,
+    Luminosity,
+    // 10.5 and up:
+    Clear,
+    Copy,
+    SourceIn,
+    SourceOut,
+    SourceAtop,
+    DestinationOver,
+    DestinationIn,
+    DestinationOut,
+    DestinationAtop,
+    Xor,
+    PlusDarker,
+    PlusLighter,
+}
+
+#[repr(C)]
+pub enum CGTextDrawingMode {
+    CGTextFill,
+    CGTextStroke,
+    CGTextFillStroke,
+    CGTextInvisible,
+    CGTextFillClip,
+    CGTextStrokeClip,
+    CGTextFillStrokeClip,
+    CGTextClip
+}
+
+#[repr(C)]
+#[derive(Clone, Copy, Debug)]
+pub enum CGLineCap {
+    CGLineCapButt,
+    CGLineCapRound,
+    CGLineCapSquare,
+}
+
+#[repr(C)]
+#[derive(Clone, Copy, Debug)]
+pub enum CGLineJoin {
+    CGLineJoinMiter,
+    CGLineJoinRound,
+    CGLineJoinBevel,
+}
+
+#[repr(C)]
+#[derive(Clone, Copy, Debug)]
+pub enum CGPathDrawingMode {
+    CGPathFill,
+    CGPathEOFill,
+    CGPathStroke,
+    CGPathFillStroke,
+    CGPathEOFillStroke,
+}
+
+#[repr(C)]
+#[derive(Clone, Copy, Debug)]
+pub enum CGInterpolationQuality {
+    CGInterpolationQualityDefault,
+    CGInterpolationQualityNone,
+    CGInterpolationQualityLow,
+    CGInterpolationQualityMedium,
+    CGInterpolationQualityHigh,
+}
+
+foreign_type! {
+    #[doc(hidden)]
+    pub unsafe type CGContext {
+        type CType = ::sys::CGContext;
+        fn drop = |cs| CGContextRelease(cs);
+        fn clone = |p| CGContextRetain(p);
+    }
+}
+
+impl CGContext {
+    pub fn type_id() -> CFTypeID {
+        unsafe {
+            CGContextGetTypeID()
+        }
+    }
+
+    /// Creates a `CGContext` instance from an existing [`CGContextRef`] pointer. 
+    /// 
+    /// This funtion will internally call [`CGRetain`] and hence there is no need to call it explicitly.
+    /// 
+    /// This function is particularly useful for cases when the context is not instantiated/managed
+    /// by the caller, but it's retrieve via other means (e.g., by calling the method [`NSGraphicsContext::CGContext`]
+    /// in a cocoa application).
+    /// 
+    /// [`CGContextRef`]: https://developer.apple.com/documentation/coregraphics/cgcontextref
+    /// [`CGRetain`]: https://developer.apple.com/documentation/coregraphics/1586506-cgcontextretain
+    /// [`NSGraphicsContext::CGContext`]: https://developer.apple.com/documentation/appkit/nsgraphicscontext/1535352-currentcontext
+    pub unsafe fn from_existing_context_ptr(ctx: *mut ::sys::CGContext) -> CGContext {
+        CGContextRetain(ctx);
+        Self::from_ptr(ctx)
+    }
+
+    pub fn create_bitmap_context(data: Option<*mut c_void>,
+                                 width: size_t,
+                                 height: size_t,
+                                 bits_per_component: size_t,
+                                 bytes_per_row: size_t,
+                                 space: &CGColorSpace,
+                                 bitmap_info: u32)
+                                 -> CGContext {
+        unsafe {
+            let result = CGBitmapContextCreate(data.unwrap_or(ptr::null_mut()),
+                                               width,
+                                               height,
+                                               bits_per_component,
+                                               bytes_per_row,
+                                               space.as_ptr(),
+                                               bitmap_info);
+            assert!(!result.is_null());
+            Self::from_ptr(result)
+        }
+    }
+
+    pub fn data(&mut self) -> &mut [u8] {
+        unsafe {
+            slice::from_raw_parts_mut(
+                    CGBitmapContextGetData(self.as_ptr()) as *mut u8,
+                    (self.height() * self.bytes_per_row()) as usize)
+        }
+    }
+}
+
+impl CGContextRef {
+    pub fn flush(&self) {
+        unsafe {
+            CGContextFlush(self.as_ptr())
+        }
+    }
+
+    pub fn width(&self) -> size_t {
+        unsafe {
+            CGBitmapContextGetWidth(self.as_ptr())
+        }
+    }
+
+    pub fn height(&self) -> size_t {
+        unsafe {
+            CGBitmapContextGetHeight(self.as_ptr())
+        }
+    }
+
+    pub fn bytes_per_row(&self) -> size_t {
+        unsafe {
+            CGBitmapContextGetBytesPerRow(self.as_ptr())
+        }
+    }
+
+    pub fn clip_bounding_box(&self) -> CGRect {
+        unsafe {
+            CGContextGetClipBoundingBox(self.as_ptr())
+        }
+    }
+
+    pub fn set_fill_color(&self, color: &CGColor) {
+        unsafe {
+            CGContextSetFillColorWithColor(self.as_ptr(), color.as_concrete_TypeRef());
+        }
+    }
+
+    pub fn set_rgb_fill_color(&self, red: CGFloat, green: CGFloat, blue: CGFloat, alpha: CGFloat) {
+        unsafe {
+            CGContextSetRGBFillColor(self.as_ptr(), red, green, blue, alpha)
+        }
+    }
+
+    pub fn set_rgb_stroke_color(&self, red: CGFloat, green: CGFloat, blue: CGFloat, alpha: CGFloat) {
+        unsafe {
+            CGContextSetRGBStrokeColor(self.as_ptr(), red, green, blue, alpha)
+        }
+    }
+
+    pub fn set_gray_fill_color(&self, gray: CGFloat, alpha: CGFloat) {
+        unsafe {
+            CGContextSetGrayFillColor(self.as_ptr(), gray, alpha)
+        }
+    }
+
+    pub fn set_blend_mode(&self, blend_mode: CGBlendMode) {
+        unsafe {
+            CGContextSetBlendMode(self.as_ptr(), blend_mode)
+        }
+    }
+
+    pub fn set_allows_font_smoothing(&self, allows_font_smoothing: bool) {
+        unsafe {
+            CGContextSetAllowsFontSmoothing(self.as_ptr(), allows_font_smoothing)
+        }
+    }
+
+    pub fn set_font_smoothing_style(&self, style: i32) {
+        unsafe {
+            CGContextSetFontSmoothingStyle(self.as_ptr(), style as _);
+        }
+    }
+
+    pub fn set_should_smooth_fonts(&self, should_smooth_fonts: bool) {
+        unsafe {
+            CGContextSetShouldSmoothFonts(self.as_ptr(), should_smooth_fonts)
+        }
+    }
+
+    pub fn set_allows_antialiasing(&self, allows_antialiasing: bool) {
+        unsafe {
+            CGContextSetAllowsAntialiasing(self.as_ptr(), allows_antialiasing)
+        }
+    }
+
+    pub fn set_should_antialias(&self, should_antialias: bool) {
+        unsafe {
+            CGContextSetShouldAntialias(self.as_ptr(), should_antialias)
+        }
+    }
+
+    pub fn set_allows_font_subpixel_quantization(&self, allows_font_subpixel_quantization: bool) {
+        unsafe {
+            CGContextSetAllowsFontSubpixelQuantization(self.as_ptr(), allows_font_subpixel_quantization)
+        }
+    }
+
+    pub fn set_should_subpixel_quantize_fonts(&self, should_subpixel_quantize_fonts: bool) {
+        unsafe {
+            CGContextSetShouldSubpixelQuantizeFonts(self.as_ptr(), should_subpixel_quantize_fonts)
+        }
+    }
+
+    pub fn set_allows_font_subpixel_positioning(&self, allows_font_subpixel_positioning: bool) {
+        unsafe {
+            CGContextSetAllowsFontSubpixelPositioning(self.as_ptr(), allows_font_subpixel_positioning)
+        }
+    }
+
+    pub fn set_should_subpixel_position_fonts(&self, should_subpixel_position_fonts: bool) {
+        unsafe {
+            CGContextSetShouldSubpixelPositionFonts(self.as_ptr(), should_subpixel_position_fonts)
+        }
+    }
+
+    pub fn set_text_drawing_mode(&self, mode: CGTextDrawingMode) {
+        unsafe {
+            CGContextSetTextDrawingMode(self.as_ptr(), mode)
+        }
+    }
+
+    pub fn set_line_cap(&self, cap: CGLineCap) {
+        unsafe {
+            CGContextSetLineCap(self.as_ptr(), cap)
+        }
+    }
+
+    pub fn set_line_dash(&self, phase: CGFloat, lengths: &[CGFloat]) {
+        unsafe {
+            CGContextSetLineDash(self.as_ptr(), phase, lengths.as_ptr(), lengths.len())
+        }
+    }
+
+    pub fn set_line_join(&self, join: CGLineJoin) {
+        unsafe {
+            CGContextSetLineJoin(self.as_ptr(), join)
+        }
+    }
+
+    pub fn set_line_width(&self, width: CGFloat) {
+        unsafe {
+            CGContextSetLineWidth(self.as_ptr(), width)
+        }
+    }
+
+    pub fn set_miter_limit(&self, limit: CGFloat) {
+        unsafe {
+            CGContextSetMiterLimit(self.as_ptr(), limit)
+        }
+    }
+
+    pub fn add_path(&self, path: &CGPathRef) {
+        unsafe {
+            CGContextAddPath(self.as_ptr(), path.as_ptr());
+        }
+    }
+
+    pub fn add_curve_to_point(&self,
+                              cp1x: CGFloat,
+                              cp1y: CGFloat,
+                              cp2x: CGFloat,
+                              cp2y: CGFloat,
+                              x: CGFloat,
+                              y: CGFloat) {
+        unsafe {
+            CGContextAddCurveToPoint(self.as_ptr(),
+                                     cp1x, cp1y,
+                                     cp2x, cp2y,
+                                     x, y);
+        }
+    }
+
+    pub fn add_quad_curve_to_point(&self,
+                                   cpx: CGFloat,
+                                   cpy: CGFloat,
+                                   x: CGFloat,
+                                   y: CGFloat) {
+        unsafe {
+            CGContextAddQuadCurveToPoint(self.as_ptr(),
+                                         cpx, cpy,
+                                         x, y);
+        }
+    }
+
+    pub fn add_line_to_point(&self, x: CGFloat, y: CGFloat) {
+        unsafe {
+            CGContextAddLineToPoint(self.as_ptr(), x, y);
+        }
+    }
+
+    pub fn begin_path(&self) {
+         unsafe {
+            CGContextBeginPath(self.as_ptr());
+        }
+    }
+
+    pub fn close_path(&self) {
+        unsafe {
+            CGContextClosePath(self.as_ptr());
+        }
+    }
+
+    pub fn move_to_point(&self, x: CGFloat, y: CGFloat) {
+        unsafe {
+            CGContextMoveToPoint(self.as_ptr(), x, y);
+        }
+    }
+
+    pub fn clip(&self) {
+        unsafe {
+            CGContextClip(self.as_ptr());
+        }
+    }
+
+    pub fn eo_clip(&self) {
+        unsafe {
+            CGContextEOClip(self.as_ptr());
+        }
+    }
+
+    pub fn reset_clip(&self) {
+        unsafe {
+            CGContextResetClip(self.as_ptr());
+        }
+    }
+
+    pub fn draw_path(&self, mode: CGPathDrawingMode) {
+        unsafe {
+            CGContextDrawPath(self.as_ptr(), mode);
+        }
+    }
+
+    pub fn fill_path(&self) {
+        unsafe {
+            CGContextFillPath(self.as_ptr());
+        }
+    }
+
+    pub fn eo_fill_path(&self) {
+        unsafe {
+            CGContextEOFillPath(self.as_ptr());
+        }
+    }
+
+    pub fn stroke_path(&self) {
+        unsafe {
+            CGContextStrokePath(self.as_ptr());
+        }
+    }
+
+    pub fn fill_rect(&self, rect: CGRect) {
+        unsafe {
+            CGContextFillRect(self.as_ptr(), rect)
+        }
+    }
+
+    pub fn fill_rects(&self, rects: &[CGRect]) {
+        unsafe {
+            CGContextFillRects(self.as_ptr(), rects.as_ptr(), rects.len())
+        }
+    }
+
+    pub fn clear_rect(&self, rect: CGRect) {
+        unsafe {
+            CGContextClearRect(self.as_ptr(), rect)
+        }
+    }
+
+    pub fn stroke_rect(&self, rect: CGRect) {
+        unsafe {
+            CGContextStrokeRect(self.as_ptr(), rect)
+        }
+    }
+
+    pub fn stroke_rect_with_width(&self, rect: CGRect, width: CGFloat) {
+        unsafe {
+            CGContextStrokeRectWithWidth(self.as_ptr(), rect, width)
+        }
+    }
+
+    pub fn clip_to_rect(&self, rect: CGRect) {
+        unsafe {
+            CGContextClipToRect(self.as_ptr(), rect)
+        }
+    }
+
+    pub fn clip_to_rects(&self, rects: &[CGRect]) {
+        unsafe {
+            CGContextClipToRects(self.as_ptr(), rects.as_ptr(), rects.len())
+        }
+    }
+
+    pub fn clip_to_mask(&self, rect: CGRect, image: &CGImage) {
+        unsafe {
+            CGContextClipToMask(self.as_ptr(), rect, image.as_ptr())
+        }
+    }
+
+    pub fn replace_path_with_stroked_path(&self) {
+        unsafe {
+            CGContextReplacePathWithStrokedPath(self.as_ptr())
+        }
+    }
+
+    pub fn fill_ellipse_in_rect(&self, rect: CGRect) {
+        unsafe {
+            CGContextFillEllipseInRect(self.as_ptr(), rect)
+        }
+    }
+
+    pub fn stroke_ellipse_in_rect(&self, rect: CGRect) {
+        unsafe {
+            CGContextStrokeEllipseInRect(self.as_ptr(), rect)
+        }
+    }
+
+    pub fn stroke_line_segments(&self, points: &[CGPoint]) {
+        unsafe {
+            CGContextStrokeLineSegments(self.as_ptr(), points.as_ptr(), points.len())
+        }
+    }
+
+    pub fn set_interpolation_quality(&self, quality: CGInterpolationQuality) {
+        unsafe {
+            CGContextSetInterpolationQuality(self.as_ptr(), quality);
+        }
+    }
+
+    pub fn get_interpolation_quality(&self) -> CGInterpolationQuality {
+        unsafe {
+            CGContextGetInterpolationQuality(self.as_ptr())
+
+        }
+    }
+
+    pub fn draw_image(&self, rect: CGRect, image: &CGImage) {
+        unsafe {
+            CGContextDrawImage(self.as_ptr(), rect, image.as_ptr());
+        }
+    }
+
+    pub fn create_image(&self) -> Option<CGImage> {
+        let image = unsafe { CGBitmapContextCreateImage(self.as_ptr()) };
+        if !image.is_null() {
+            Some(unsafe { CGImage::from_ptr(image) })
+        } else {
+            None
+        }
+    }
+
+    pub fn set_font(&self, font: &CGFont) {
+        unsafe {
+            CGContextSetFont(self.as_ptr(), font.as_ptr())
+        }
+    }
+
+    pub fn set_font_size(&self, size: CGFloat) {
+        unsafe {
+            CGContextSetFontSize(self.as_ptr(), size)
+        }
+    }
+
+    pub fn set_text_matrix(&self, t: &CGAffineTransform) {
+        unsafe {
+            CGContextSetTextMatrix(self.as_ptr(), *t)
+        }
+    }
+
+    pub fn set_text_position(&self, x: CGFloat, y: CGFloat) {
+        unsafe {
+            CGContextSetTextPosition(self.as_ptr(), x, y)
+        }
+    }
+
+    pub fn show_glyphs_at_positions(&self, glyphs: &[CGGlyph], positions: &[CGPoint]) {
+        unsafe {
+            let count = cmp::min(glyphs.len(), positions.len());
+            CGContextShowGlyphsAtPositions(self.as_ptr(),
+                                           glyphs.as_ptr(),
+                                           positions.as_ptr(),
+                                           count)
+        }
+    }
+
+    pub fn save(&self) {
+        unsafe {
+            CGContextSaveGState(self.as_ptr());
+        }
+    }
+
+    pub fn restore(&self) {
+        unsafe {
+            CGContextRestoreGState(self.as_ptr());
+        }
+    }
+
+    pub fn translate(&self, tx: CGFloat, ty: CGFloat) {
+        unsafe {
+            CGContextTranslateCTM(self.as_ptr(), tx, ty);
+        }
+    }
+
+    pub fn scale(&self, sx: CGFloat, sy: CGFloat) {
+        unsafe {
+            CGContextScaleCTM(self.as_ptr(), sx, sy);
+        }
+    }
+
+    pub fn rotate(&self, angle: CGFloat) {
+        unsafe {
+            CGContextRotateCTM(self.as_ptr(), angle);
+        }
+    }
+
+    pub fn get_ctm(&self) -> CGAffineTransform {
+        unsafe {
+            CGContextGetCTM(self.as_ptr())
+        }
+    }
+
+    pub fn concat_ctm(&self, transform: CGAffineTransform) {
+        unsafe {
+            CGContextConcatCTM(self.as_ptr(), transform)
+        }
+    }
+
+    pub fn draw_linear_gradient(&self, gradient: &CGGradient, start_point: CGPoint, end_point: CGPoint, options: CGGradientDrawingOptions) {
+        unsafe {
+            CGContextDrawLinearGradient(self.as_ptr(), gradient.as_ptr(), start_point, end_point, options);
+        }
+    }
+
+    pub fn draw_radial_gradient(&self, gradient: &CGGradient, start_center: CGPoint, start_radius: CGFloat, end_center: CGPoint, end_radius: CGFloat, options: CGGradientDrawingOptions) {
+        unsafe {
+            CGContextDrawRadialGradient(self.as_ptr(), gradient.as_ptr(), start_center, start_radius, end_center, end_radius, options);
+        }
+    }
+
+    pub fn set_shadow(&self, offset: CGSize, blur: CGFloat) {
+        unsafe {
+            CGContextSetShadow(self.as_ptr(), offset, blur);
+        }
+    }
+
+    pub fn set_shadow_with_color(&self, offset: CGSize, blur: CGFloat, color: &CGColor) {
+        unsafe {
+            CGContextSetShadowWithColor(self.as_ptr(), offset, blur, color.as_concrete_TypeRef());
+        }
+    }
+
+    pub fn set_alpha(&self, alpha: CGFloat) {
+        unsafe {
+            CGContextSetAlpha(self.as_ptr(), alpha);
+        }
+    }
+}
+
+#[test]
+fn create_bitmap_context_test() {
+    use geometry::*;
+
+    let cs = CGColorSpace::create_device_rgb();
+    let ctx = CGContext::create_bitmap_context(None,
+                                16, 8,
+                                8, 0,
+                                &cs,
+                                ::base::kCGImageAlphaPremultipliedLast);
+    ctx.set_rgb_fill_color(1.,0.,1.,1.);
+    ctx.set_miter_limit(4.);
+    ctx.fill_rect(CGRect::new(&CGPoint::new(0.,0.), &CGSize::new(8.,8.)));
+    let img = ctx.create_image().unwrap();
+    assert_eq!(16, img.width());
+    assert_eq!(8, img.height());
+    assert_eq!(8, img.bits_per_component());
+    assert_eq!(32, img.bits_per_pixel());
+    let data = img.data();
+    assert_eq!(255, data.bytes()[0]);
+    assert_eq!(0, data.bytes()[1]);
+    assert_eq!(255, data.bytes()[2]);
+    assert_eq!(255, data.bytes()[3]);
+}
+
+#[link(name = "CoreGraphics", kind = "framework")]
+extern {
+    fn CGContextRetain(c: ::sys::CGContextRef) -> ::sys::CGContextRef;
+    fn CGContextRelease(c: ::sys::CGContextRef);
+
+    fn CGBitmapContextCreate(data: *mut c_void,
+                             width: size_t,
+                             height: size_t,
+                             bitsPerComponent: size_t,
+                             bytesPerRow: size_t,
+                             space: ::sys::CGColorSpaceRef,
+                             bitmapInfo: u32)
+                             -> ::sys::CGContextRef;
+    fn CGBitmapContextGetData(context: ::sys::CGContextRef) -> *mut c_void;
+    fn CGBitmapContextGetWidth(context: ::sys::CGContextRef) -> size_t;
+    fn CGBitmapContextGetHeight(context: ::sys::CGContextRef) -> size_t;
+    fn CGBitmapContextGetBytesPerRow(context: ::sys::CGContextRef) -> size_t;
+    fn CGBitmapContextCreateImage(context: ::sys::CGContextRef) -> ::sys::CGImageRef;
+    fn CGContextGetTypeID() -> CFTypeID;
+    fn CGContextGetClipBoundingBox(c: ::sys::CGContextRef) -> CGRect;
+    fn CGContextFlush(c: ::sys::CGContextRef);
+    fn CGContextSetBlendMode(c: ::sys::CGContextRef, blendMode: CGBlendMode);
+    fn CGContextSetAllowsFontSmoothing(c: ::sys::CGContextRef, allowsFontSmoothing: bool);
+    fn CGContextSetShouldSmoothFonts(c: ::sys::CGContextRef, shouldSmoothFonts: bool);
+    fn CGContextSetFontSmoothingStyle(c: ::sys::CGContextRef, style: c_int);
+    fn CGContextSetAllowsAntialiasing(c: ::sys::CGContextRef, allowsAntialiasing: bool);
+    fn CGContextSetShouldAntialias(c: ::sys::CGContextRef, shouldAntialias: bool);
+    fn CGContextSetAllowsFontSubpixelQuantization(c: ::sys::CGContextRef,
+                                                  allowsFontSubpixelQuantization: bool);
+    fn CGContextSetShouldSubpixelQuantizeFonts(c: ::sys::CGContextRef,
+                                               shouldSubpixelQuantizeFonts: bool);
+    fn CGContextSetAllowsFontSubpixelPositioning(c: ::sys::CGContextRef,
+                                                 allowsFontSubpixelPositioning: bool);
+    fn CGContextSetShouldSubpixelPositionFonts(c: ::sys::CGContextRef,
+                                               shouldSubpixelPositionFonts: bool);
+    fn CGContextSetTextDrawingMode(c: ::sys::CGContextRef, mode: CGTextDrawingMode);
+    fn CGContextSetFillColorWithColor(c: ::sys::CGContextRef, color: ::sys::CGColorRef);
+    fn CGContextSetLineCap(c: ::sys::CGContextRef, cap: CGLineCap);
+    fn CGContextSetLineDash(c: ::sys::CGContextRef, phase: CGFloat, lengths: *const CGFloat, count: size_t);
+    fn CGContextSetLineJoin(c: ::sys::CGContextRef, join: CGLineJoin);
+    fn CGContextSetLineWidth(c: ::sys::CGContextRef, width: CGFloat);
+    fn CGContextSetMiterLimit(c: ::sys::CGContextRef, limit: CGFloat);
+
+    fn CGContextAddPath(c: ::sys::CGContextRef, path: ::sys::CGPathRef);
+    fn CGContextAddCurveToPoint(c: ::sys::CGContextRef,
+                                cp1x: CGFloat,
+                                cp1y: CGFloat,
+                                cp2x: CGFloat,
+                                cp2y: CGFloat,
+                                x: CGFloat,
+                                y: CGFloat);
+    fn CGContextAddQuadCurveToPoint(c: ::sys::CGContextRef,
+                                    cpx: CGFloat,
+                                    cpy: CGFloat,
+                                    x: CGFloat,
+                                    y: CGFloat);
+    fn CGContextAddLineToPoint(c: ::sys::CGContextRef,
+                               x: CGFloat,
+                               y: CGFloat);
+    fn CGContextBeginPath(c: ::sys::CGContextRef);
+    fn CGContextClosePath(c: ::sys::CGContextRef);
+    fn CGContextMoveToPoint(c: ::sys::CGContextRef,
+                            x: CGFloat,
+                            y: CGFloat);
+    fn CGContextDrawPath(c: ::sys::CGContextRef, mode: CGPathDrawingMode);
+    fn CGContextFillPath(c: ::sys::CGContextRef);
+    fn CGContextEOFillPath(c: ::sys::CGContextRef);
+    fn CGContextClip(c: ::sys::CGContextRef);
+    fn CGContextEOClip(c: ::sys::CGContextRef);
+    fn CGContextResetClip(c: ::sys::CGContextRef);
+    fn CGContextStrokePath(c: ::sys::CGContextRef);
+    fn CGContextSetRGBFillColor(context: ::sys::CGContextRef,
+                                red: CGFloat,
+                                green: CGFloat,
+                                blue: CGFloat,
+                                alpha: CGFloat);
+    fn CGContextSetRGBStrokeColor(context: ::sys::CGContextRef,
+                                  red: CGFloat,
+                                  green: CGFloat,
+                                  blue: CGFloat,
+                                  alpha: CGFloat);
+    fn CGContextSetGrayFillColor(context: ::sys::CGContextRef, gray: CGFloat, alpha: CGFloat);
+    fn CGContextClearRect(context: ::sys::CGContextRef,
+                          rect: CGRect);
+    fn CGContextFillRect(context: ::sys::CGContextRef,
+                         rect: CGRect);
+    fn CGContextFillRects(context: ::sys::CGContextRef,
+                          rects: *const CGRect,
+                          count: size_t);
+    fn CGContextStrokeRect(context: ::sys::CGContextRef,
+                           rect: CGRect);
+    fn CGContextStrokeRectWithWidth(context: ::sys::CGContextRef,
+                                    rect: CGRect,
+                                    width: CGFloat);
+    fn CGContextClipToRect(context: ::sys::CGContextRef,
+                           rect: CGRect);
+    fn CGContextClipToRects(context: ::sys::CGContextRef,
+                            rects: *const CGRect,
+                            count: size_t);
+    fn CGContextClipToMask(ctx: ::sys::CGContextRef, rect: CGRect, mask: ::sys::CGImageRef);
+    fn CGContextReplacePathWithStrokedPath(context: ::sys::CGContextRef);
+    fn CGContextFillEllipseInRect(context: ::sys::CGContextRef,
+                                  rect: CGRect);
+    fn CGContextStrokeEllipseInRect(context: ::sys::CGContextRef,
+                                    rect: CGRect);
+    fn CGContextStrokeLineSegments(context: ::sys::CGContextRef,
+                                    points: *const CGPoint,
+                                    count: size_t);
+    fn CGContextDrawImage(c: ::sys::CGContextRef, rect: CGRect, image: ::sys::CGImageRef);
+    fn CGContextSetInterpolationQuality(c: ::sys::CGContextRef, quality: CGInterpolationQuality);
+    fn CGContextGetInterpolationQuality(c: ::sys::CGContextRef) -> CGInterpolationQuality;
+    fn CGContextSetFont(c: ::sys::CGContextRef, font: ::sys::CGFontRef);
+    fn CGContextSetFontSize(c: ::sys::CGContextRef, size: CGFloat);
+    fn CGContextSetTextMatrix(c: ::sys::CGContextRef, t: CGAffineTransform);
+    fn CGContextSetTextPosition(c: ::sys::CGContextRef, x: CGFloat, y: CGFloat);
+    fn CGContextShowGlyphsAtPositions(c: ::sys::CGContextRef,
+                                      glyphs: *const CGGlyph,
+                                      positions: *const CGPoint,
+                                      count: size_t);
+
+    fn CGContextSaveGState(c: ::sys::CGContextRef);
+    fn CGContextRestoreGState(c: ::sys::CGContextRef);
+    fn CGContextTranslateCTM(c: ::sys::CGContextRef, tx: CGFloat, ty: CGFloat);
+    fn CGContextScaleCTM(c: ::sys::CGContextRef, sx: CGFloat, sy: CGFloat);
+    fn CGContextRotateCTM(c: ::sys::CGContextRef, angle: CGFloat);
+    fn CGContextGetCTM(c: ::sys::CGContextRef) -> CGAffineTransform;
+    fn CGContextConcatCTM(c: ::sys::CGContextRef, transform: CGAffineTransform);
+
+    fn CGContextDrawLinearGradient(c: ::sys::CGContextRef, gradient: ::sys::CGGradientRef, startPoint: CGPoint, endPoint: CGPoint, options: CGGradientDrawingOptions);
+    fn CGContextDrawRadialGradient(c: ::sys::CGContextRef, gradient: ::sys::CGGradientRef,  startCenter: CGPoint, startRadius: CGFloat, endCenter:CGPoint, endRadius:CGFloat, options: CGGradientDrawingOptions);
+
+    fn CGContextSetShadow(c: ::sys::CGContextRef, offset: CGSize, blur: CGFloat);
+    fn CGContextSetShadowWithColor(c: ::sys::CGContextRef, offset: CGSize, blur: CGFloat, color: ::sys::CGColorRef);
+
+    fn CGContextSetAlpha(c: ::sys::CGContextRef, alpha: CGFloat);
+}
+
diff --git a/third_party/rust/core-graphics/src/data_provider.rs b/third_party/rust/core-graphics/src/data_provider.rs
new file mode 100644
index 0000000000..38d515e397
--- /dev/null
+++ b/third_party/rust/core-graphics/src/data_provider.rs
@@ -0,0 +1,162 @@
+// 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::data::{CFData, CFDataRef};
+
+use libc::{size_t, off_t};
+use std::mem;
+use std::ptr;
+use std::sync::Arc;
+use std::os::raw::c_void;
+
+use foreign_types::{ForeignType, ForeignTypeRef};
+
+pub type CGDataProviderGetBytesCallback = Option<unsafe extern fn (*mut c_void, *mut c_void, size_t) -> size_t>;
+pub type CGDataProviderReleaseInfoCallback = Option<unsafe extern fn (*mut c_void)>;
+pub type CGDataProviderRewindCallback = Option<unsafe extern fn (*mut c_void)>;
+pub type CGDataProviderSkipBytesCallback = Option<unsafe extern fn (*mut c_void, size_t)>;
+pub type CGDataProviderSkipForwardCallback = Option<unsafe extern fn (*mut c_void, off_t) -> off_t>;
+
+pub type CGDataProviderGetBytePointerCallback = Option<unsafe extern fn (*mut c_void) -> *mut c_void>;
+pub type CGDataProviderGetBytesAtOffsetCallback = Option<unsafe extern fn (*mut c_void, *mut c_void, size_t, size_t)>;
+pub type CGDataProviderReleaseBytePointerCallback = Option<unsafe extern fn (*mut c_void, *const c_void)>;
+pub type CGDataProviderReleaseDataCallback = Option<unsafe extern fn (*mut c_void, *const c_void, size_t)>;
+pub type CGDataProviderGetBytesAtPositionCallback = Option<unsafe extern fn (*mut c_void, *mut c_void, off_t, size_t)>;
+
+foreign_type! {
+    #[doc(hidden)]
+    pub unsafe type CGDataProvider {
+        type CType = ::sys::CGDataProvider;
+        fn drop = |cs| CFRelease(cs as *mut _);
+        fn clone = |p| CFRetain(p as *const _) as *mut _;
+    }
+}
+
+impl CGDataProvider {
+    pub fn type_id() -> CFTypeID {
+        unsafe {
+            CGDataProviderGetTypeID()
+        }
+    }
+
+    /// Creates a data provider from the given reference-counted buffer.
+    ///
+    /// The `CGDataProvider` object takes ownership of the reference. Once the data provider
+    /// is destroyed, the reference count of the buffer is automatically decremented.
+    pub fn from_buffer<T: AsRef<[u8]> + Sync + Send>(buffer: Arc<T>) -> Self {
+        unsafe {
+            let ptr = (*buffer).as_ref().as_ptr() as *const c_void;
+            let len = (*buffer).as_ref().len() as size_t;
+            let info = Arc::into_raw(buffer) as *mut c_void;
+            let result = CGDataProviderCreateWithData(info, ptr, len, Some(release::<T>));
+            return CGDataProvider::from_ptr(result);
+        }
+
+        unsafe extern "C" fn release<T>(info: *mut c_void, _: *const c_void, _: size_t) {
+            drop(Arc::from_raw(info as *mut T))
+        }
+    }
+
+    /// Creates a data prvider from a given slice. The data provider does not own the slice in this
+    /// case, so it's up to the user to ensure the memory safety here.
+    pub unsafe fn from_slice(buffer: &[u8]) -> Self {
+        let ptr = buffer.as_ptr() as *const c_void;
+        let len = buffer.len() as size_t;
+        let result = CGDataProviderCreateWithData(ptr::null_mut(), ptr, len, None);
+        CGDataProvider::from_ptr(result)
+    }
+
+    /// Creates a data provider from the given raw pointer, length, and destructor function.
+    ///
+    /// This is double-boxed because the Core Text API requires that the userdata be a single
+    /// pointer.
+    pub unsafe fn from_custom_data(custom_data: Box<Box<dyn CustomData>>) -> Self {
+        let (ptr, len) = (custom_data.ptr() as *const c_void, custom_data.len());
+        let userdata = mem::transmute::<Box<Box<dyn CustomData>>, &mut c_void>(custom_data);
+        let data_provider = CGDataProviderCreateWithData(userdata, ptr, len, Some(release));
+        return CGDataProvider::from_ptr(data_provider);
+
+        unsafe extern "C" fn release(info: *mut c_void, _: *const c_void, _: size_t) {
+            drop(mem::transmute::<*mut c_void, Box<Box<dyn CustomData>>>(info))
+        }
+    }
+}
+
+impl CGDataProviderRef {
+    /// Creates a copy of the data from the underlying `CFDataProviderRef`.
+    pub fn copy_data(&self) -> CFData {
+        unsafe { CFData::wrap_under_create_rule(CGDataProviderCopyData(self.as_ptr())) }
+    }
+}
+
+/// Encapsulates custom data that can be wrapped.
+pub trait CustomData {
+    /// Returns a pointer to the start of the custom data. This pointer *must not change* during
+    /// the lifespan of this CustomData.
+    unsafe fn ptr(&self) -> *const u8;
+    /// Returns the length of this custom data. This value must not change during the lifespan of
+    /// this CustomData.
+    unsafe fn len(&self) -> usize;
+}
+
+#[test]
+fn test_data_provider() {
+    let l = vec![5];
+    CGDataProvider::from_buffer(Arc::new(l));
+
+    let l = vec![5];
+    CGDataProvider::from_buffer(Arc::new(l.into_boxed_slice()));
+
+    // Make sure the buffer is actually dropped
+    use std::sync::atomic::{AtomicBool, Ordering::SeqCst};
+    struct VecWrapper {
+        inner: Vec<u8>,
+        dropped: Arc<AtomicBool>,
+    }
+
+    impl Drop for VecWrapper {
+        fn drop(&mut self) {
+            self.dropped.store(true, SeqCst)
+        }
+    }
+
+    impl std::convert::AsRef<[u8]> for VecWrapper {
+        fn as_ref(&self) -> &[u8] {
+            &self.inner
+        }
+    }
+
+    let dropped = Arc::new(AtomicBool::default());
+    let l = Arc::new(VecWrapper {inner: vec![5], dropped: dropped.clone() });
+    let m = l.clone();
+    let dp = CGDataProvider::from_buffer(l);
+    drop(m);
+    assert!(!dropped.load(SeqCst));
+    drop(dp);
+    assert!(dropped.load(SeqCst))
+}
+
+#[link(name = "CoreGraphics", kind = "framework")]
+extern {
+    fn CGDataProviderCopyData(provider: ::sys::CGDataProviderRef) -> CFDataRef;
+    //fn CGDataProviderCreateDirect
+    //fn CGDataProviderCreateSequential
+    //fn CGDataProviderCreateWithCFData
+    fn CGDataProviderCreateWithData(info: *mut c_void,
+                                    data: *const c_void,
+                                    size: size_t,
+                                    releaseData: CGDataProviderReleaseDataCallback
+                                   ) -> ::sys::CGDataProviderRef;
+    //fn CGDataProviderCreateWithFilename(filename: *c_char) -> CGDataProviderRef;
+    //fn CGDataProviderCreateWithURL
+    fn CGDataProviderGetTypeID() -> CFTypeID;
+    //fn CGDataProviderRelease(provider: CGDataProviderRef);
+    //fn CGDataProviderRetain(provider: CGDataProviderRef) -> CGDataProviderRef;
+}
diff --git a/third_party/rust/core-graphics/src/display.rs b/third_party/rust/core-graphics/src/display.rs
new file mode 100644
index 0000000000..c5c167e404
--- /dev/null
+++ b/third_party/rust/core-graphics/src/display.rs
@@ -0,0 +1,791 @@
+// 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.
+
+#![allow(non_upper_case_globals)]
+
+use libc;
+use std::ptr;
+use std::ops::Deref;
+
+pub use base::{CGError, boolean_t};
+pub use geometry::{CGRect, CGPoint, CGSize};
+
+use core_foundation::string::{CFString, CFStringRef};
+use core_foundation::base::{CFRetain, TCFType};
+use image::CGImage;
+use foreign_types::ForeignType;
+
+pub type CGDirectDisplayID = u32;
+pub type CGWindowID        = u32;
+pub type CGWindowLevel = i32;
+
+pub const kCGNullWindowID: CGWindowID = 0 as CGWindowID;
+pub const kCGNullDirectDisplayID: CGDirectDisplayID = 0 as CGDirectDisplayID;
+
+pub type CGWindowListOption = u32;
+
+pub const kCGWindowListOptionAll:              CGWindowListOption    = 0;
+pub const kCGWindowListOptionOnScreenOnly:     CGWindowListOption    = 1 << 0;
+pub const kCGWindowListOptionOnScreenAboveWindow: CGWindowListOption = 1 << 1;
+pub const kCGWindowListOptionOnScreenBelowWindow: CGWindowListOption = 1 << 2;
+pub const kCGWindowListOptionIncludingWindow:  CGWindowListOption    = 1 << 3;
+pub const kCGWindowListExcludeDesktopElements: CGWindowListOption    = 1 << 4;
+
+pub type CGWindowImageOption = u32;
+
+pub const kCGWindowImageDefault: CGWindowImageOption = 0;
+pub const kCGWindowImageBoundsIgnoreFraming: CGWindowImageOption = 1 << 0;
+pub const kCGWindowImageShouldBeOpaque: CGWindowImageOption = 1 << 1;
+pub const kCGWindowImageOnlyShadows: CGWindowImageOption = 1 << 2;
+pub const kCGWindowImageBestResolution: CGWindowImageOption = 1 << 3;
+pub const kCGWindowImageNominalResolution: CGWindowImageOption = 1 << 4;
+
+pub const kDisplayModeValidFlag: u32               = 0x00000001;
+pub const kDisplayModeSafeFlag: u32                = 0x00000002;
+pub const kDisplayModeDefaultFlag: u32             = 0x00000004;
+pub const kDisplayModeAlwaysShowFlag: u32          = 0x00000008;
+pub const kDisplayModeNeverShowFlag: u32           = 0x00000080;
+pub const kDisplayModeNotResizeFlag: u32           = 0x00000010;
+pub const kDisplayModeRequiresPanFlag: u32         = 0x00000020;
+pub const kDisplayModeInterlacedFlag: u32          = 0x00000040;
+pub const kDisplayModeSimulscanFlag: u32           = 0x00000100;
+pub const kDisplayModeBuiltInFlag: u32             = 0x00000400;
+pub const kDisplayModeNotPresetFlag: u32           = 0x00000200;
+pub const kDisplayModeStretchedFlag: u32           = 0x00000800;
+pub const kDisplayModeNotGraphicsQualityFlag: u32  = 0x00001000;
+pub const kDisplayModeValidateAgainstDisplay: u32  = 0x00002000;
+pub const kDisplayModeTelevisionFlag: u32          = 0x00100000;
+pub const kDisplayModeValidForMirroringFlag: u32   = 0x00200000;
+pub const kDisplayModeAcceleratorBackedFlag: u32   = 0x00400000;
+pub const kDisplayModeValidForHiResFlag: u32       = 0x00800000;
+pub const kDisplayModeValidForAirPlayFlag: u32     = 0x01000000;
+pub const kDisplayModeNativeFlag: u32              = 0x02000000;
+
+pub const kDisplayModeSafetyFlags: u32             = 0x00000007;
+
+pub type CGDisplayBlendFraction = f32;
+pub const kCGDisplayBlendNormal: CGDisplayBlendFraction = 0.0;
+pub const kCGDisplayBlendSolidColor: CGDisplayBlendFraction = 1.0;
+
+pub type CGDisplayFadeReservationToken = u32;
+pub const kCGDisplayFadeReservationInvalidToken: CGDisplayFadeReservationToken = 0;
+
+pub type CGDisplayFadeInterval = f32;
+pub type CGDisplayReservationInterval = f32;
+pub const kCGMaxDisplayReservationInterval: CGDisplayReservationInterval = 15.0;
+
+pub const IO1BitIndexedPixels: &str =     "P";
+pub const IO2BitIndexedPixels: &str =     "PP";
+pub const IO4BitIndexedPixels: &str =     "PPPP";
+pub const IO8BitIndexedPixels: &str =     "PPPPPPPP";
+pub const IO16BitDirectPixels: &str =     "-RRRRRGGGGGBBBBB";
+pub const IO32BitDirectPixels: &str =     "--------RRRRRRRRGGGGGGGGBBBBBBBB";
+pub const kIO30BitDirectPixels: &str =    "--RRRRRRRRRRGGGGGGGGGGBBBBBBBBBB";
+pub const kIO64BitDirectPixels: &str =    "-16R16G16B16";
+pub const kIO16BitFloatPixels: &str =     "-16FR16FG16FB16";
+pub const kIO32BitFloatPixels: &str =     "-32FR32FG32FB32";
+pub const IOYUV422Pixels: &str =          "Y4U2V2";
+pub const IO8BitOverlayPixels: &str =     "O8";
+
+
+pub use core_foundation::dictionary::{ CFDictionary, CFDictionaryRef, CFDictionaryGetValueIfPresent };
+pub use core_foundation::array::{ CFArray, CFArrayRef };
+pub use core_foundation::array::{ CFArrayGetCount, CFArrayGetValueAtIndex };
+pub use core_foundation::base::{  CFIndex, CFRelease, CFTypeRef };
+
+pub type CGDisplayConfigRef = *mut libc::c_void;
+
+#[repr(u32)]
+#[derive(Clone, Copy)]
+pub enum CGConfigureOption {
+    ConfigureForAppOnly = 0,
+    ConfigureForSession = 1,
+    ConfigurePermanently = 2,
+}
+
+#[derive(Copy, Clone, Debug)]
+pub struct CGDisplay {
+    pub id: CGDirectDisplayID,
+}
+
+foreign_type! {
+    #[doc(hidden)]
+    pub unsafe type CGDisplayMode {
+        type CType = ::sys::CGDisplayMode;
+        fn drop = CGDisplayModeRelease;
+        fn clone = |p| CFRetain(p as *const _) as *mut _;
+    }
+}
+
+impl CGDisplay {
+    #[inline]
+    pub fn new(id: CGDirectDisplayID) -> CGDisplay {
+        CGDisplay { id: id }
+    }
+
+    /// Returns the the main display.
+    #[inline]
+    pub fn main() -> CGDisplay {
+        CGDisplay::new(unsafe { CGMainDisplayID() })
+    }
+
+    /// A value that will never correspond to actual hardware.
+    pub fn null_display() -> CGDisplay {
+        CGDisplay::new(kCGNullDirectDisplayID)
+    }
+
+    /// Returns the bounds of a display in the global display coordinate space.
+    #[inline]
+    pub fn bounds(&self) -> CGRect {
+        unsafe { CGDisplayBounds(self.id) }
+    }
+
+    /// Returns information about a display's current configuration.
+    #[inline]
+    pub fn display_mode(&self) -> Option<CGDisplayMode> {
+        unsafe {
+            let mode_ref = CGDisplayCopyDisplayMode(self.id);
+            if !mode_ref.is_null() {
+                Some(CGDisplayMode::from_ptr(mode_ref))
+            } else {
+                None
+            }
+        }
+    }
+
+    /// Begins a new set of display configuration changes.
+    pub fn begin_configuration(&self) -> Result<CGDisplayConfigRef, CGError> {
+        unsafe {
+            let mut config_ref: CGDisplayConfigRef = ptr::null_mut();
+            let result = CGBeginDisplayConfiguration(&mut config_ref);
+            if result == 0 {
+                Ok(config_ref)
+            } else {
+                Err(result)
+            }
+        }
+    }
+
+    /// Cancels a set of display configuration changes.
+    pub fn cancel_configuration(&self, config_ref: &CGDisplayConfigRef) -> Result<(), CGError> {
+        let result = unsafe { CGCancelDisplayConfiguration(*config_ref) };
+        if result == 0 {
+            Ok(())
+        } else {
+            Err(result)
+        }
+    }
+
+    /// Completes a set of display configuration changes.
+    pub fn complete_configuration(
+        &self,
+        config_ref: &CGDisplayConfigRef,
+        option: CGConfigureOption,
+    ) -> Result<(), CGError> {
+        let result = unsafe { CGCompleteDisplayConfiguration(*config_ref, option) };
+        if result == 0 {
+            Ok(())
+        } else {
+            Err(result)
+        }
+    }
+
+    /// Configures the display mode of a display.
+    pub fn configure_display_with_display_mode(
+        &self,
+        config_ref: &CGDisplayConfigRef,
+        display_mode: &CGDisplayMode,
+    ) -> Result<(), CGError> {
+        let result = unsafe {
+            CGConfigureDisplayWithDisplayMode(
+                *config_ref,
+                self.id,
+                display_mode.as_ptr(),
+                ptr::null(),
+            )
+        };
+        if result == 0 {
+            Ok(())
+        } else {
+            Err(result)
+        }
+    }
+
+    /// Configures the origin of a display in the global display coordinate space.
+    pub fn configure_display_origin(
+        &self,
+        config_ref: &CGDisplayConfigRef,
+        x: i32,
+        y: i32,
+    ) -> Result<(), CGError> {
+        let result = unsafe { CGConfigureDisplayOrigin(*config_ref, self.id, x, y) };
+
+        if result == 0 {
+            Ok(())
+        } else {
+            Err(result)
+        }
+    }
+
+    /// Changes the configuration of a mirroring set.
+    pub fn configure_display_mirror_of_display(
+        &self,
+        config_ref: &CGDisplayConfigRef,
+        master: &CGDisplay,
+    ) -> Result<(), CGError> {
+        let result = unsafe { CGConfigureDisplayMirrorOfDisplay(*config_ref, self.id, master.id) };
+
+        if result == 0 {
+            Ok(())
+        } else {
+            Err(result)
+        }
+    }
+
+    /// Returns an image containing the contents of the specified display.
+    #[inline]
+    pub fn image(&self) -> Option<CGImage> {
+        unsafe {
+            let image_ref = CGDisplayCreateImage(self.id);
+            if !image_ref.is_null() {
+                Some(CGImage::from_ptr(image_ref))
+            } else {
+                None
+            }
+        }
+    }
+
+    /// Returns an image containing the contents of a portion of the specified display.
+    #[inline]
+    pub fn image_for_rect(&self, bounds: CGRect) -> Option<CGImage> {
+        unsafe {
+            let image_ref = CGDisplayCreateImageForRect(self.id, bounds);
+            if !image_ref.is_null() {
+                Some(CGImage::from_ptr(image_ref))
+            } else {
+                None
+            }
+        }
+    }
+
+    /// Returns a composite image based on a dynamically generated list of
+    /// windows.
+    #[inline]
+    pub fn screenshot(
+        bounds: CGRect,
+        list_option: CGWindowListOption,
+        window_id: CGWindowID,
+        image_option: CGWindowImageOption,
+    ) -> Option<CGImage> {
+        unsafe {
+            let image_ref = CGWindowListCreateImage(bounds, list_option, window_id, image_option);
+            if !image_ref.is_null() {
+                Some(CGImage::from_ptr(image_ref))
+            } else {
+                None
+            }
+        }
+    }
+
+    /// Returns a composite image of the specified windows.
+    #[inline]
+    pub fn screenshot_from_windows(
+        bounds: CGRect,
+        windows: CFArray,
+        image_option: CGWindowImageOption,
+    ) -> Option<CGImage> {
+        unsafe {
+            let image_ref = CGWindowListCreateImageFromArray(
+                bounds,
+                windows.as_concrete_TypeRef(),
+                image_option,
+            );
+            if !image_ref.is_null() {
+                Some(CGImage::from_ptr(image_ref))
+            } else {
+                None
+            }
+        }
+    }
+
+    /// Generates and returns information about the selected windows in the
+    /// current user session.
+    pub fn window_list_info(
+        option: CGWindowListOption,
+        relative_to_window: Option<CGWindowID>,
+    ) -> Option<CFArray> {
+        let relative_to_window = relative_to_window.unwrap_or(kCGNullWindowID);
+        let array_ref = unsafe { CGWindowListCopyWindowInfo(option, relative_to_window) };
+        if !array_ref.is_null() {
+            Some(unsafe { TCFType::wrap_under_create_rule(array_ref) })
+        } else {
+            None
+        }
+    }
+
+    /// Returns a Boolean value indicating whether a display is active.
+    #[inline]
+    pub fn is_active(&self) -> bool {
+        unsafe { CGDisplayIsActive(self.id) != 0 }
+    }
+
+    /// Returns a boolean indicating whether a display is always in a
+    /// mirroring set.
+    #[inline]
+    pub fn is_always_in_mirror_set(&self) -> bool {
+        unsafe { CGDisplayIsAlwaysInMirrorSet(self.id) != 0 }
+    }
+
+    /// Returns a boolean indicating whether a display is sleeping (and is
+    /// therefore not drawable.)
+    #[inline]
+    pub fn is_asleep(&self) -> bool {
+        unsafe { CGDisplayIsAsleep(self.id) != 0 }
+    }
+
+    /// Returns a boolean indicating whether a display is built-in, such as
+    /// the internal display in portable systems.
+    #[inline]
+    pub fn is_builtin(&self) -> bool {
+        unsafe { CGDisplayIsBuiltin(self.id) != 0 }
+    }
+
+    /// Returns a boolean indicating whether a display is in a hardware
+    /// mirroring set.
+    #[inline]
+    pub fn is_in_hw_mirror_set(&self) -> bool {
+        unsafe { CGDisplayIsInHWMirrorSet(self.id) != 0 }
+    }
+
+    /// Returns a boolean indicating whether a display is in a mirroring set.
+    #[inline]
+    pub fn is_in_mirror_set(&self) -> bool {
+        unsafe { CGDisplayIsInMirrorSet(self.id) != 0 }
+    }
+
+    /// Returns a boolean indicating whether a display is the main display.
+    #[inline]
+    pub fn is_main(&self) -> bool {
+        unsafe { CGDisplayIsMain(self.id) != 0 }
+    }
+
+    /// Returns a boolean indicating whether a display is connected or online.
+    #[inline]
+    pub fn is_online(&self) -> bool {
+        unsafe { CGDisplayIsOnline(self.id) != 0 }
+    }
+
+    /// Returns a boolean indicating whether Quartz is using OpenGL-based
+    /// window acceleration (Quartz Extreme) to render in a display.
+    #[inline]
+    pub fn uses_open_gl_acceleration(&self) -> bool {
+        unsafe { CGDisplayUsesOpenGLAcceleration(self.id) != 0 }
+    }
+
+    /// Returns a boolean indicating whether a display is running in a stereo
+    /// graphics mode.
+    #[inline]
+    pub fn is_stereo(&self) -> bool {
+        unsafe { CGDisplayIsStereo(self.id) != 0 }
+    }
+
+    /// For a secondary display in a mirroring set, returns the primary
+    /// display.
+    #[inline]
+    pub fn mirrors_display(&self) -> CGDirectDisplayID {
+        unsafe { CGDisplayMirrorsDisplay(self.id) }
+    }
+
+    /// Returns the primary display in a hardware mirroring set.
+    #[inline]
+    pub fn primary_display(&self) -> CGDirectDisplayID {
+        unsafe { CGDisplayPrimaryDisplay(self.id) }
+    }
+
+    /// Returns the rotation angle of a display in degrees.
+    #[inline]
+    pub fn rotation(&self) -> f64 {
+        unsafe { CGDisplayRotation(self.id) }
+    }
+
+    /// Returns the width and height of a display in millimeters.
+    #[inline]
+    pub fn screen_size(&self) -> CGSize {
+        unsafe { CGDisplayScreenSize(self.id) }
+    }
+
+    /// Returns the serial number of a display monitor.
+    #[inline]
+    pub fn serial_number(&self) -> u32 {
+        unsafe { CGDisplaySerialNumber(self.id) }
+    }
+
+    /// Returns the logical unit number of a display.
+    #[inline]
+    pub fn unit_number(&self) -> u32 {
+        unsafe { CGDisplayUnitNumber(self.id) }
+    }
+
+    /// Returns the vendor number of the specified display's monitor.
+    #[inline]
+    pub fn vendor_number(&self) -> u32 {
+        unsafe { CGDisplayVendorNumber(self.id) }
+    }
+
+    /// Returns the model number of a display monitor.
+    #[inline]
+    pub fn model_number(&self) -> u32 {
+        unsafe { CGDisplayModelNumber(self.id) }
+    }
+
+    /// Returns the display height in pixel units.
+    #[inline]
+    pub fn pixels_high(&self) -> u64 {
+        unsafe { CGDisplayPixelsHigh(self.id) as u64 }
+    }
+
+    /// Returns the display width in pixel units.
+    #[inline]
+    pub fn pixels_wide(&self) -> u64 {
+        unsafe { CGDisplayPixelsWide(self.id) as u64 }
+    }
+
+    /// Provides a list of displays that are active (or drawable).
+    #[inline]
+    pub fn active_displays() -> Result<Vec<CGDirectDisplayID>, CGError> {
+        let count = CGDisplay::active_display_count()?;
+        let mut buf: Vec<CGDirectDisplayID> = vec![0; count as usize];
+        let result =
+            unsafe { CGGetActiveDisplayList(count as u32, buf.as_mut_ptr(), ptr::null_mut()) };
+        if result == 0 {
+            Ok(buf)
+        } else {
+            Err(result)
+        }
+    }
+
+    /// Provides count of displays that are active (or drawable).
+    #[inline]
+    pub fn active_display_count() -> Result<u32, CGError> {
+        let mut count: u32 = 0;
+        let result = unsafe { CGGetActiveDisplayList(0, ptr::null_mut(), &mut count) };
+        if result == 0 {
+            Ok(count as u32)
+        } else {
+            Err(result)
+        }
+    }
+
+    /// Hides the mouse cursor, and increments the hide cursor count.
+    #[inline]
+    pub fn hide_cursor(&self) -> Result<(), CGError> {
+        let result = unsafe { CGDisplayHideCursor(self.id) };
+        if result == 0 {
+            Ok(())
+        } else {
+            Err(result)
+        }
+    }
+
+    /// Decrements the hide cursor count, and shows the mouse cursor if the
+    /// count is 0.
+    #[inline]
+    pub fn show_cursor(&self) -> Result<(), CGError> {
+        let result = unsafe { CGDisplayShowCursor(self.id) };
+        if result == 0 {
+            Ok(())
+        } else {
+            Err(result)
+        }
+    }
+
+    /// Moves the mouse cursor to a specified point relative to the display
+    /// origin (the upper-left corner of the display).
+    #[inline]
+    pub fn move_cursor_to_point(&self, point: CGPoint) -> Result<(), CGError> {
+        let result = unsafe { CGDisplayMoveCursorToPoint(self.id, point) };
+        if result == 0 {
+            Ok(())
+        } else {
+            Err(result)
+        }
+    }
+
+    /// Moves the mouse cursor without generating events.
+    #[inline]
+    pub fn warp_mouse_cursor_position(point: CGPoint) -> Result<(), CGError> {
+        let result = unsafe { CGWarpMouseCursorPosition(point) };
+        if result == 0 {
+            Ok(())
+        } else {
+            Err(result)
+        }
+    }
+
+    /// Connects or disconnects the mouse and cursor while an application is
+    /// in the foreground.
+    #[inline]
+    pub fn associate_mouse_and_mouse_cursor_position(connected: bool) -> Result<(), CGError> {
+        let result = unsafe { CGAssociateMouseAndMouseCursorPosition(connected as boolean_t) };
+        if result == 0 {
+            Ok(())
+        } else {
+            Err(result)
+        }
+    }
+}
+
+impl CGDisplayMode {
+    /// Returns all display modes for the specified display id.
+    pub fn all_display_modes(
+        display_id: CGDirectDisplayID,
+        options: CFDictionaryRef,
+    ) -> Option<Vec<CGDisplayMode>> {
+        let array_opt: Option<CFArray> = unsafe {
+            let array_ref = CGDisplayCopyAllDisplayModes(display_id, options);
+            if !array_ref.is_null() {
+                Some(CFArray::wrap_under_create_rule(array_ref))
+            } else {
+                None
+            }
+        };
+        match array_opt {
+            Some(modes) => {
+                let vec: Vec<CGDisplayMode> = modes
+                    .into_iter()
+                    .map(|value0| {
+                        let x = *value0.deref() as *mut ::sys::CGDisplayMode;
+                        unsafe { CGDisplayMode::from_ptr(x) }
+                    }).collect();
+                Some(vec)
+            }
+            None => None,
+        }
+    }
+
+    /// Returns the height of the specified display mode.
+    #[inline]
+    pub fn height(&self) -> u64 {
+        unsafe { CGDisplayModeGetHeight(self.as_ptr()) as u64 }
+    }
+
+    /// Returns the width of the specified display mode.
+    #[inline]
+    pub fn width(&self) -> u64 {
+        unsafe { CGDisplayModeGetWidth(self.as_ptr()) as u64 }
+    }
+
+    /// Returns the pixel height of the specified display mode.
+    #[inline]
+    pub fn pixel_height(&self) -> u64 {
+        unsafe { CGDisplayModeGetPixelHeight(self.as_ptr()) as u64 }
+    }
+
+    /// Returns the pixel width of the specified display mode.
+    #[inline]
+    pub fn pixel_width(&self) -> u64 {
+        unsafe { CGDisplayModeGetPixelWidth(self.as_ptr()) as u64 }
+    }
+
+    #[inline]
+    pub fn refresh_rate(&self) -> f64 {
+        unsafe { CGDisplayModeGetRefreshRate(self.as_ptr()) }
+    }
+
+    /// Returns the I/O Kit flags of the specified display mode.
+    #[inline]
+    pub fn io_flags(&self) -> u32 {
+        unsafe { CGDisplayModeGetIOFlags(self.as_ptr()) as u32 }
+    }
+
+    /// Returns the pixel encoding of the specified display mode.
+    #[inline]
+    pub fn pixel_encoding(&self) -> CFString {
+        unsafe { CFString::wrap_under_create_rule(CGDisplayModeCopyPixelEncoding(self.as_ptr())) }
+    }
+
+    /// Returns the number of bits per pixel of the specified display mode.
+    pub fn bit_depth(&self) -> usize {
+        let pixel_encoding = self.pixel_encoding().to_string();
+        // my numerical representation for kIO16BitFloatPixels and kIO32bitFloatPixels
+        // are made up and possibly non-sensical
+        if pixel_encoding.eq_ignore_ascii_case(kIO32BitFloatPixels) {
+            96
+        } else if pixel_encoding.eq_ignore_ascii_case(kIO64BitDirectPixels) {
+            64
+        } else if pixel_encoding.eq_ignore_ascii_case(kIO16BitFloatPixels) {
+            48
+        } else if pixel_encoding.eq_ignore_ascii_case(IO32BitDirectPixels) {
+            32
+        } else if pixel_encoding.eq_ignore_ascii_case(kIO30BitDirectPixels) {
+            30
+        } else if pixel_encoding.eq_ignore_ascii_case(IO16BitDirectPixels) {
+            16
+        } else if pixel_encoding.eq_ignore_ascii_case(IO8BitIndexedPixels) {
+            8
+        } else {
+            0
+        }
+    }
+
+    pub fn mode_id(&self) -> i32 {
+        unsafe { CGDisplayModeGetIODisplayModeID(self.as_ptr()) }
+    }
+}
+
+#[link(name = "CoreGraphics", kind = "framework")]
+extern "C" {
+    pub static CGRectNull: CGRect;
+    pub static CGRectInfinite: CGRect;
+
+    pub static kCGDisplayShowDuplicateLowResolutionModes: CFStringRef;
+
+    pub fn CGDisplayModeRetain(mode: ::sys::CGDisplayModeRef);
+    pub fn CGDisplayModeRelease(mode: ::sys::CGDisplayModeRef);
+
+    pub fn CGMainDisplayID() -> CGDirectDisplayID;
+    pub fn CGDisplayIsActive(display: CGDirectDisplayID) -> boolean_t;
+    pub fn CGDisplayIsAlwaysInMirrorSet(display: CGDirectDisplayID) -> boolean_t;
+    pub fn CGDisplayIsAsleep(display: CGDirectDisplayID) -> boolean_t;
+    pub fn CGDisplayIsBuiltin(display: CGDirectDisplayID) -> boolean_t;
+    pub fn CGDisplayIsInHWMirrorSet(display: CGDirectDisplayID) -> boolean_t;
+    pub fn CGDisplayIsInMirrorSet(display: CGDirectDisplayID) -> boolean_t;
+    pub fn CGDisplayIsMain(display: CGDirectDisplayID) -> boolean_t;
+    pub fn CGDisplayIsOnline(display: CGDirectDisplayID) -> boolean_t;
+    pub fn CGDisplayIsStereo(display: CGDirectDisplayID) -> boolean_t;
+    pub fn CGDisplayMirrorsDisplay(display: CGDirectDisplayID) -> CGDirectDisplayID;
+    pub fn CGDisplayPrimaryDisplay(display: CGDirectDisplayID) -> CGDirectDisplayID;
+    pub fn CGDisplayRotation(display: CGDirectDisplayID) -> libc::c_double;
+    pub fn CGDisplayScreenSize(display: CGDirectDisplayID) -> CGSize;
+    pub fn CGDisplaySerialNumber(display: CGDirectDisplayID) -> u32;
+    pub fn CGDisplayUnitNumber(display: CGDirectDisplayID) -> u32;
+    pub fn CGDisplayUsesOpenGLAcceleration(display: CGDirectDisplayID) -> boolean_t;
+    pub fn CGDisplayVendorNumber(display: CGDirectDisplayID) -> u32;
+    pub fn CGGetActiveDisplayList(
+        max_displays: u32,
+        active_displays: *mut CGDirectDisplayID,
+        display_count: *mut u32,
+    ) -> CGError;
+    pub fn CGGetDisplaysWithRect(
+        rect: CGRect,
+        max_displays: u32,
+        displays: *mut CGDirectDisplayID,
+        matching_display_count: *mut u32,
+    ) -> CGError;
+    pub fn CGDisplayModelNumber(display: CGDirectDisplayID) -> u32;
+    pub fn CGDisplayPixelsHigh(display: CGDirectDisplayID) -> libc::size_t;
+    pub fn CGDisplayPixelsWide(display: CGDirectDisplayID) -> libc::size_t;
+    pub fn CGDisplayBounds(display: CGDirectDisplayID) -> CGRect;
+    pub fn CGDisplayCreateImage(display: CGDirectDisplayID) -> ::sys::CGImageRef;
+    pub fn CGDisplayCreateImageForRect(
+        display: CGDirectDisplayID,
+        rect: CGRect,
+    ) -> ::sys::CGImageRef;
+
+    // Capturing and Releasing Displays
+    pub fn CGDisplayCapture(display: CGDirectDisplayID) -> CGError;
+    pub fn CGDisplayRelease(display: CGDirectDisplayID) -> CGError;
+    pub fn CGShieldingWindowLevel() -> CGWindowLevel;
+
+    // Configuring Displays
+    pub fn CGBeginDisplayConfiguration(config: *mut CGDisplayConfigRef) -> CGError;
+    pub fn CGCancelDisplayConfiguration(config: CGDisplayConfigRef) -> CGError;
+    pub fn CGCompleteDisplayConfiguration(
+        config: CGDisplayConfigRef,
+        option: CGConfigureOption,
+    ) -> CGError;
+    pub fn CGConfigureDisplayWithDisplayMode(
+        config: CGDisplayConfigRef,
+        display: CGDirectDisplayID,
+        mode: ::sys::CGDisplayModeRef,
+        options: CFDictionaryRef,
+    ) -> CGError;
+    pub fn CGConfigureDisplayMirrorOfDisplay(
+        config: CGDisplayConfigRef,
+        display: CGDirectDisplayID,
+        master: CGDirectDisplayID,
+    ) -> CGError;
+    pub fn CGConfigureDisplayOrigin(
+        config: CGDisplayConfigRef,
+        display: CGDirectDisplayID,
+        x: i32,
+        y: i32,
+    ) -> CGError;
+    pub fn CGRestorePermanentDisplayConfiguration();
+
+    pub fn CGDisplayCopyDisplayMode(display: CGDirectDisplayID) -> ::sys::CGDisplayModeRef;
+    pub fn CGDisplayModeGetHeight(mode: ::sys::CGDisplayModeRef) -> libc::size_t;
+    pub fn CGDisplayModeGetWidth(mode: ::sys::CGDisplayModeRef) -> libc::size_t;
+    pub fn CGDisplayModeGetPixelHeight(mode: ::sys::CGDisplayModeRef) -> libc::size_t;
+    pub fn CGDisplayModeGetPixelWidth(mode: ::sys::CGDisplayModeRef) -> libc::size_t;
+    pub fn CGDisplayModeGetRefreshRate(mode: ::sys::CGDisplayModeRef) -> libc::c_double;
+    pub fn CGDisplayModeGetIOFlags(mode: ::sys::CGDisplayModeRef) -> u32;
+    pub fn CGDisplayModeCopyPixelEncoding(mode: ::sys::CGDisplayModeRef) -> CFStringRef;
+    pub fn CGDisplayModeGetIODisplayModeID(mode: ::sys::CGDisplayModeRef) -> i32;
+
+    pub fn CGDisplayCopyAllDisplayModes(
+        display: CGDirectDisplayID,
+        options: CFDictionaryRef,
+    ) -> CFArrayRef;
+    pub fn CGDisplaySetDisplayMode(
+        display: CGDirectDisplayID,
+        mode: ::sys::CGDisplayModeRef,
+        options: CFDictionaryRef,
+    ) -> CGError;
+
+    // mouse stuff
+    pub fn CGDisplayHideCursor(display: CGDirectDisplayID) -> CGError;
+    pub fn CGDisplayShowCursor(display: CGDirectDisplayID) -> CGError;
+    pub fn CGDisplayMoveCursorToPoint(display: CGDirectDisplayID, point: CGPoint) -> CGError;
+    pub fn CGWarpMouseCursorPosition(point: CGPoint) -> CGError;
+    pub fn CGAssociateMouseAndMouseCursorPosition(connected: boolean_t) -> CGError;
+
+    // Display Fade Effects
+    pub fn CGConfigureDisplayFadeEffect(
+        config: CGDisplayConfigRef,
+        fadeOutSeconds: CGDisplayFadeInterval,
+        fadeInSeconds: CGDisplayFadeInterval,
+        fadeRed: f32,
+        fadeGreen: f32,
+        fadeBlue: f32,
+    ) -> CGError;
+    pub fn CGAcquireDisplayFadeReservation(
+        seconds: CGDisplayReservationInterval,
+        token: *mut CGDisplayFadeReservationToken,
+    ) -> CGError;
+    pub fn CGDisplayFade(
+        token: CGDisplayFadeReservationToken,
+        duration: CGDisplayFadeInterval,
+        startBlend: CGDisplayBlendFraction,
+        endBlend: CGDisplayBlendFraction,
+        redBlend: f32,
+        greenBlend: f32,
+        blueBlend: f32,
+        synchronous: boolean_t,
+    ) -> CGError;
+    // CGDisplayFadeOperationInProgress
+    pub fn CGReleaseDisplayFadeReservation(token: CGDisplayFadeReservationToken) -> CGError;
+
+    // Window Services Reference
+    pub fn CGWindowListCopyWindowInfo(
+        option: CGWindowListOption,
+        relativeToWindow: CGWindowID,
+    ) -> CFArrayRef;
+    pub fn CGWindowListCreateImage(
+        screenBounds: CGRect,
+        listOptions: CGWindowListOption,
+        windowId: CGWindowID,
+        imageOptions: CGWindowImageOption,
+    ) -> ::sys::CGImageRef;
+    pub fn CGWindowListCreateImageFromArray(
+        screenBounds: CGRect,
+        windowArray: CFArrayRef,
+        imageOptions: CGWindowImageOption,
+    ) -> ::sys::CGImageRef;
+}
diff --git a/third_party/rust/core-graphics/src/event.rs b/third_party/rust/core-graphics/src/event.rs
new file mode 100644
index 0000000000..aaddf821d7
--- /dev/null
+++ b/third_party/rust/core-graphics/src/event.rs
@@ -0,0 +1,819 @@
+#![allow(non_upper_case_globals)]
+use core_foundation::{
+    base::{CFRelease, CFRetain, CFTypeID, TCFType},
+    mach_port::{CFMachPort, CFMachPortRef},
+};
+use event_source::CGEventSource;
+use foreign_types::ForeignType;
+use geometry::CGPoint;
+use libc::c_void;
+use std::mem::ManuallyDrop;
+
+pub type CGEventField = u32;
+pub type CGKeyCode = u16;
+pub type CGScrollEventUnit = u32;
+
+bitflags! {
+    /// Flags for events
+    ///
+    /// [Ref](http://opensource.apple.com/source/IOHIDFamily/IOHIDFamily-700/IOHIDSystem/IOKit/hidsystem/IOLLEvent.h)
+    #[repr(C)]
+    pub struct CGEventFlags: u64 {
+        const CGEventFlagNull = 0;
+
+        // Device-independent modifier key bits.
+        const CGEventFlagAlphaShift = 0x00010000;
+        const CGEventFlagShift = 0x00020000;
+        const CGEventFlagControl = 0x00040000;
+        const CGEventFlagAlternate = 0x00080000;
+        const CGEventFlagCommand = 0x00100000;
+
+        // Special key identifiers.
+        const CGEventFlagHelp = 0x00400000;
+        const CGEventFlagSecondaryFn = 0x00800000;
+
+        // Identifies key events from numeric keypad area on extended keyboards.
+        const CGEventFlagNumericPad = 0x00200000;
+
+        // Indicates if mouse/pen movement events are not being coalesced
+        const CGEventFlagNonCoalesced = 0x00000100;
+    }
+}
+
+/// Key codes for keys that are independent of keyboard layout.
+///
+/// [Ref](https://github.com/phracker/MacOSX-SDKs/blob/master/MacOSX10.13.sdk/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/Headers/Events.h)
+#[repr(C)]
+pub struct KeyCode;
+impl KeyCode {
+    pub const RETURN: CGKeyCode = 0x24;
+    pub const TAB: CGKeyCode = 0x30;
+    pub const SPACE: CGKeyCode = 0x31;
+    pub const DELETE: CGKeyCode = 0x33;
+    pub const ESCAPE: CGKeyCode = 0x35;
+    pub const COMMAND: CGKeyCode = 0x37;
+    pub const SHIFT: CGKeyCode = 0x38;
+    pub const CAPS_LOCK: CGKeyCode = 0x39;
+    pub const OPTION: CGKeyCode = 0x3A;
+    pub const CONTROL: CGKeyCode = 0x3B;
+    pub const RIGHT_COMMAND: CGKeyCode = 0x36;
+    pub const RIGHT_SHIFT: CGKeyCode = 0x3C;
+    pub const RIGHT_OPTION: CGKeyCode = 0x3D;
+    pub const RIGHT_CONTROL: CGKeyCode = 0x3E;
+    pub const FUNCTION: CGKeyCode = 0x3F;
+    pub const VOLUME_UP: CGKeyCode = 0x48;
+    pub const VOLUME_DOWN: CGKeyCode = 0x49;
+    pub const MUTE: CGKeyCode = 0x4A;
+    pub const F1: CGKeyCode = 0x7A;
+    pub const F2: CGKeyCode = 0x78;
+    pub const F3: CGKeyCode = 0x63;
+    pub const F4: CGKeyCode = 0x76;
+    pub const F5: CGKeyCode = 0x60;
+    pub const F6: CGKeyCode = 0x61;
+    pub const F7: CGKeyCode = 0x62;
+    pub const F8: CGKeyCode = 0x64;
+    pub const F9: CGKeyCode = 0x65;
+    pub const F10: CGKeyCode = 0x6D;
+    pub const F11: CGKeyCode = 0x67;
+    pub const F12: CGKeyCode = 0x6F;
+    pub const F13: CGKeyCode = 0x69;
+    pub const F14: CGKeyCode = 0x6B;
+    pub const F15: CGKeyCode = 0x71;
+    pub const F16: CGKeyCode = 0x6A;
+    pub const F17: CGKeyCode = 0x40;
+    pub const F18: CGKeyCode = 0x4F;
+    pub const F19: CGKeyCode = 0x50;
+    pub const F20: CGKeyCode = 0x5A;
+    pub const HELP: CGKeyCode = 0x72;
+    pub const HOME: CGKeyCode = 0x73;
+    pub const PAGE_UP: CGKeyCode = 0x74;
+    pub const FORWARD_DELETE: CGKeyCode = 0x75;
+    pub const END: CGKeyCode = 0x77;
+    pub const PAGE_DOWN: CGKeyCode = 0x79;
+    pub const LEFT_ARROW: CGKeyCode = 0x7B;
+    pub const RIGHT_ARROW: CGKeyCode = 0x7C;
+    pub const DOWN_ARROW: CGKeyCode = 0x7D;
+    pub const UP_ARROW: CGKeyCode = 0x7E;
+}
+
+#[repr(C)]
+pub struct ScrollEventUnit {}
+impl ScrollEventUnit {
+    pub const PIXEL: CGScrollEventUnit = 0;
+    pub const LINE: CGScrollEventUnit = 1;
+}
+
+/// Constants that specify the different types of input events.
+///
+/// [Ref](http://opensource.apple.com/source/IOHIDFamily/IOHIDFamily-700/IOHIDSystem/IOKit/hidsystem/IOLLEvent.h)
+#[repr(u32)]
+#[derive(Clone, Copy, Debug)]
+pub enum CGEventType {
+    Null = 0,
+
+    // Mouse events.
+    LeftMouseDown = 1,
+    LeftMouseUp = 2,
+    RightMouseDown = 3,
+    RightMouseUp = 4,
+    MouseMoved = 5,
+    LeftMouseDragged = 6,
+    RightMouseDragged = 7,
+
+    // Keyboard events.
+    KeyDown = 10,
+    KeyUp = 11,
+    FlagsChanged = 12,
+
+    // Specialized control devices.
+    ScrollWheel = 22,
+    TabletPointer = 23,
+    TabletProximity = 24,
+    OtherMouseDown = 25,
+    OtherMouseUp = 26,
+    OtherMouseDragged = 27,
+
+    // Out of band event types. These are delivered to the event tap callback
+    // to notify it of unusual conditions that disable the event tap.
+    TapDisabledByTimeout = 0xFFFFFFFE,
+    TapDisabledByUserInput = 0xFFFFFFFF,
+}
+
+/// Constants used as keys to access specialized fields in low-level events.
+///
+/// [Ref](https://developer.apple.com/documentation/coregraphics/cgeventfield)
+pub struct EventField;
+impl EventField {
+    /// Key to access an integer field that contains the mouse button event
+    /// number. Matching mouse-down and mouse-up events will have the same
+    /// event number.
+    pub const MOUSE_EVENT_NUMBER: CGEventField = 0;
+
+    /// Key to access an integer field that contains the mouse button click
+    /// state. A click state of 1 represents a single click. A click state of
+    /// 2 represents a double-click. A click state of 3 represents a
+    /// triple-click.
+    pub const MOUSE_EVENT_CLICK_STATE: CGEventField = 1;
+
+    /// Key to access a double field that contains the mouse button pressure.
+    /// The pressure value may range from 0 to 1, with 0 representing the
+    /// mouse being up. This value is commonly set by tablet pens mimicking a
+    /// mouse.
+    pub const MOUSE_EVENT_PRESSURE: CGEventField = 2;
+
+    /// Key to access an integer field that contains the mouse button number.
+    pub const MOUSE_EVENT_BUTTON_NUMBER: CGEventField = 3;
+
+    /// Key to access an integer field that contains the horizontal mouse
+    /// delta since the last mouse movement event.
+    pub const MOUSE_EVENT_DELTA_X: CGEventField = 4;
+
+    /// Key to access an integer field that contains the vertical mouse delta
+    /// since the last mouse movement event.
+    pub const MOUSE_EVENT_DELTA_Y: CGEventField = 5;
+
+    /// Key to access an integer field. The value is non-zero if the event
+    /// should be ignored by the Inkwell subsystem.
+    pub const MOUSE_EVENT_INSTANT_MOUSER: CGEventField = 6;
+
+    /// Key to access an integer field that encodes the mouse event subtype as
+    /// a `kCFNumberIntType'.
+    pub const MOUSE_EVENT_SUB_TYPE: CGEventField = 7;
+
+    /// Key to access an integer field, non-zero when this is an autorepeat of
+    /// a key-down, and zero otherwise.
+    pub const KEYBOARD_EVENT_AUTOREPEAT: CGEventField = 8;
+
+    /// Key to access an integer field that contains the virtual keycode of the
+    /// key-down or key-up event.
+    pub const KEYBOARD_EVENT_KEYCODE: CGEventField = 9;
+
+    /// Key to access an integer field that contains the keyboard type
+    /// identifier.
+    pub const KEYBOARD_EVENT_KEYBOARD_TYPE: CGEventField = 10;
+
+    /// Key to access an integer field that contains scrolling data. This field
+    /// typically contains the change in vertical position since the last
+    /// scrolling event from a Mighty Mouse scroller or a single-wheel mouse
+    /// scroller.
+    pub const SCROLL_WHEEL_EVENT_DELTA_AXIS_1: CGEventField = 11;
+
+    /// Key to access an integer field that contains scrolling data. This field
+    /// typically contains the change in horizontal position since the last
+    /// scrolling event from a Mighty Mouse scroller.
+    pub const SCROLL_WHEEL_EVENT_DELTA_AXIS_2: CGEventField = 12;
+
+    /// Key to access a field that contains scrolling data. The scrolling data
+    /// represents a line-based or pixel-based change in vertical position
+    /// since the last scrolling event from a Mighty Mouse scroller or a
+    /// single-wheel mouse scroller. The scrolling data uses a fixed-point
+    /// 16.16 signed integer format. If this key is passed to
+    /// `CGEventGetDoubleValueField', the fixed-point value is converted to a
+    /// double value.
+    pub const SCROLL_WHEEL_EVENT_FIXED_POINT_DELTA_AXIS_1: CGEventField = 93;
+
+    /// Key to access a field that contains scrolling data. The scrolling data
+    /// represents a line-based or pixel-based change in horizontal position
+    /// since the last scrolling event from a Mighty Mouse scroller. The
+    /// scrolling data uses a fixed-point 16.16 signed integer format. If this
+    /// key is passed to `CGEventGetDoubleValueField', the fixed-point value is
+    /// converted to a double value.
+    pub const SCROLL_WHEEL_EVENT_FIXED_POINT_DELTA_AXIS_2: CGEventField = 94;
+
+    /// Key to access an integer field that contains pixel-based scrolling
+    /// data. The scrolling data represents the change in vertical position
+    /// since the last scrolling event from a Mighty Mouse scroller or a
+    /// single-wheel mouse scroller.
+    pub const SCROLL_WHEEL_EVENT_POINT_DELTA_AXIS_1: CGEventField = 96;
+
+    /// Key to access an integer field that contains pixel-based scrolling
+    /// data. The scrolling data represents the change in horizontal position
+    /// since the last scrolling event from a Mighty Mouse scroller.
+    pub const SCROLL_WHEEL_EVENT_POINT_DELTA_AXIS_2: CGEventField = 97;
+
+    /// Key to access an integer field that indicates whether the event should
+    /// be ignored by the Inkwell subsystem. If the value is non-zero, the
+    /// event should be ignored.
+    pub const SCROLL_WHEEL_EVENT_INSTANT_MOUSER: CGEventField = 14;
+
+    /// Key to access an integer field that contains the absolute X coordinate
+    /// in tablet space at full tablet resolution.
+    pub const TABLET_EVENT_POINT_X: CGEventField = 15;
+
+    /// Key to access an integer field that contains the absolute Y coordinate
+    /// in tablet space at full tablet resolution.
+    pub const TABLET_EVENT_POINT_Y: CGEventField = 16;
+
+    /// Key to access an integer field that contains the absolute Z coordinate
+    /// in tablet space at full tablet resolution.
+    pub const TABLET_EVENT_POINT_Z: CGEventField = 17;
+
+    /// Key to access an integer field that contains the tablet button state.
+    /// Bit 0 is the first button, and a set bit represents a closed or pressed
+    /// button. Up to 16 buttons are supported.
+    pub const TABLET_EVENT_POINT_BUTTONS: CGEventField = 18;
+
+    /// Key to access a double field that contains the tablet pen pressure. A
+    /// value of 0.0 represents no pressure, and 1.0 represents maximum
+    /// pressure.
+    pub const TABLET_EVENT_POINT_PRESSURE: CGEventField = 19;
+
+    /// Key to access a double field that contains the horizontal tablet pen
+    /// tilt. A value of 0 represents no tilt, and 1 represents maximum tilt.
+    pub const TABLET_EVENT_TILT_X: CGEventField = 20;
+
+    /// Key to access a double field that contains the vertical tablet pen
+    /// tilt. A value of 0 represents no tilt, and 1 represents maximum tilt.
+    pub const TABLET_EVENT_TILT_Y: CGEventField = 21;
+
+    /// Key to access a double field that contains the tablet pen rotation.
+    pub const TABLET_EVENT_ROTATION: CGEventField = 22;
+
+    /// Key to access a double field that contains the tangential pressure on
+    /// the device. A value of 0.0 represents no pressure, and 1.0 represents
+    /// maximum pressure.
+    pub const TABLET_EVENT_TANGENTIAL_PRESSURE: CGEventField = 23;
+
+    /// Key to access an integer field that contains the system-assigned unique
+    /// device ID.
+    pub const TABLET_EVENT_DEVICE_ID: CGEventField = 24;
+
+    /// Key to access an integer field that contains a vendor-specified value.
+    pub const TABLET_EVENT_VENDOR_1: CGEventField = 25;
+
+    /// Key to access an integer field that contains a vendor-specified value.
+    pub const TABLET_EVENT_VENDOR_2: CGEventField = 26;
+
+    /// Key to access an integer field that contains a vendor-specified value.
+    pub const TABLET_EVENT_VENDOR_3: CGEventField = 27;
+
+    /// Key to access an integer field that contains the vendor-defined ID,
+    /// typically the USB vendor ID.
+    pub const TABLET_PROXIMITY_EVENT_VENDOR_ID: CGEventField = 28;
+
+    /// Key to access an integer field that contains the vendor-defined tablet
+    /// ID, typically the USB product ID.
+    pub const TABLET_PROXIMITY_EVENT_TABLET_ID: CGEventField = 29;
+
+    /// Key to access an integer field that contains the vendor-defined ID of
+    /// the pointing device.
+    pub const TABLET_PROXIMITY_EVENT_POINTER_ID: CGEventField = 30;
+
+    /// Key to access an integer field that contains the system-assigned
+    /// device ID.
+    pub const TABLET_PROXIMITY_EVENT_DEVICE_ID: CGEventField = 31;
+
+    /// Key to access an integer field that contains the system-assigned
+    /// unique tablet ID.
+    pub const TABLET_PROXIMITY_EVENT_SYSTEM_TABLET_ID: CGEventField = 32;
+
+    /// Key to access an integer field that contains the vendor-assigned
+    /// pointer type.
+    pub const TABLET_PROXIMITY_EVENT_VENDOR_POINTER_TYPE: CGEventField = 33;
+
+    /// Key to access an integer field that contains the vendor-defined
+    /// pointer serial number.
+    pub const TABLET_PROXIMITY_EVENT_VENDOR_POINTER_SERIAL_NUMBER: CGEventField = 34;
+
+    /// Key to access an integer field that contains the vendor-defined unique
+    /// ID.
+    pub const TABLET_PROXIMITY_EVENT_VENDOR_UNIQUE_ID: CGEventField = 35;
+
+    /// Key to access an integer field that contains the device capabilities
+    /// mask.
+    pub const TABLET_PROXIMITY_EVENT_CAPABILITY_MASK: CGEventField = 36;
+
+    /// Key to access an integer field that contains the pointer type.
+    pub const TABLET_PROXIMITY_EVENT_POINTER_TYPE: CGEventField = 37;
+
+    /// Key to access an integer field that indicates whether the pen is in
+    /// proximity to the tablet. The value is non-zero if the pen is in
+    /// proximity to the tablet and zero when leaving the tablet.
+    pub const TABLET_PROXIMITY_EVENT_ENTER_PROXIMITY: CGEventField = 38;
+
+    /// Key to access a field that contains the event target process serial
+    /// number. The value is a 64-bit value.
+    pub const EVENT_TARGET_PROCESS_SERIAL_NUMBER: CGEventField = 39;
+
+    /// Key to access a field that contains the event target Unix process ID.
+    pub const EVENT_TARGET_UNIX_PROCESS_ID: CGEventField = 40;
+
+    /// Key to access a field that contains the event source Unix process ID.
+    pub const EVENT_SOURCE_UNIX_PROCESS_ID: CGEventField = 41;
+
+    /// Key to access a field that contains the event source user-supplied
+    /// data, up to 64 bits.
+    pub const EVENT_SOURCE_USER_DATA: CGEventField = 42;
+
+    /// Key to access a field that contains the event source Unix effective UID.
+    pub const EVENT_SOURCE_USER_ID: CGEventField = 43;
+
+    /// Key to access a field that contains the event source Unix effective
+    /// GID.
+    pub const EVENT_SOURCE_GROUP_ID: CGEventField = 44;
+
+    /// Key to access a field that contains the event source state ID used to
+    /// create this event.
+    pub const EVENT_SOURCE_STATE_ID: CGEventField = 45;
+
+    /// Key to access an integer field that indicates whether a scrolling event
+    /// contains continuous, pixel-based scrolling data. The value is non-zero
+    /// when the scrolling data is pixel-based and zero when the scrolling data
+    /// is line-based.
+    pub const SCROLL_WHEEL_EVENT_IS_CONTINUOUS: CGEventField = 88;
+
+    /// Added in 10.5; made public in 10.7.
+    pub const MOUSE_EVENT_WINDOW_UNDER_MOUSE_POINTER: CGEventField = 91;
+    pub const MOUSE_EVENT_WINDOW_UNDER_MOUSE_POINTER_THAT_CAN_HANDLE_THIS_EVENT: CGEventField = 92;
+}
+
+// Constants that specify buttons on a one, two, or three-button mouse.
+#[repr(C)]
+#[derive(Clone, Copy, Debug)]
+pub enum CGMouseButton {
+    Left,
+    Right,
+    Center,
+}
+
+/// Possible tapping points for events.
+#[repr(C)]
+#[derive(Clone, Copy, Debug)]
+pub enum CGEventTapLocation {
+    HID,
+    Session,
+    AnnotatedSession,
+}
+
+// The next three enums are taken from:
+// [Ref](https://github.com/phracker/MacOSX-SDKs/blob/ef9fe35d5691b6dd383c8c46d867a499817a01b6/MacOSX10.15.sdk/System/Library/Frameworks/CoreGraphics.framework/Versions/A/Headers/CGEventTypes.h)
+/* Constants that specify where a new event tap is inserted into the list of
+active event taps. */
+#[repr(u32)]
+#[derive(Clone, Copy, Debug)]
+pub enum CGEventTapPlacement {
+    HeadInsertEventTap = 0,
+    TailAppendEventTap,
+}
+
+/* Constants that specify whether a new event tap is an active filter or a
+passive listener. */
+#[repr(u32)]
+#[derive(Clone, Copy, Debug)]
+pub enum CGEventTapOptions {
+    Default = 0x00000000,
+    ListenOnly = 0x00000001,
+}
+
+pub type CGEventMask = u64;
+/* Generate an event mask for a single type of event. */
+macro_rules! CGEventMaskBit {
+    ($eventType:expr) => {
+        1 << $eventType as CGEventMask
+    };
+}
+
+pub type CGEventTapProxy = *const c_void;
+pub type CGEventTapCallBackFn<'tap_life> =
+    Box<dyn Fn(CGEventTapProxy, CGEventType, &CGEvent) -> Option<CGEvent> + 'tap_life>;
+type CGEventTapCallBackInternal = unsafe extern "C" fn(
+    proxy: CGEventTapProxy,
+    etype: CGEventType,
+    event: ::sys::CGEventRef,
+    user_info: *const c_void,
+) -> ::sys::CGEventRef;
+
+unsafe extern "C" fn cg_event_tap_callback_internal(
+    _proxy: CGEventTapProxy,
+    _etype: CGEventType,
+    _event: ::sys::CGEventRef,
+    _user_info: *const c_void,
+) -> ::sys::CGEventRef {
+    let callback = _user_info as *mut CGEventTapCallBackFn;
+    let event = CGEvent::from_ptr(_event);
+    let new_event = (*callback)(_proxy, _etype, &event);
+    let event = match new_event {
+        Some(new_event) => new_event,
+        None => event,
+    };
+    ManuallyDrop::new(event).as_ptr()
+}
+
+
+/// ```no_run
+///extern crate core_foundation;
+///use core_foundation::runloop::{kCFRunLoopCommonModes, CFRunLoop};
+///use core_graphics::event::{CGEventTap, CGEventTapLocation, CGEventTapPlacement, CGEventTapOptions, CGEventType};
+///let current = CFRunLoop::get_current();
+///match CGEventTap::new(
+///     CGEventTapLocation::HID,
+///     CGEventTapPlacement::HeadInsertEventTap,
+///     CGEventTapOptions::Default,
+///     vec![CGEventType::MouseMoved],
+///     |_a, _b, d| {
+///         println!("{:?}", d.location());
+///         None
+///     },
+/// ) {
+///     Ok(tap) => unsafe {
+///         let loop_source = tap
+///             .mach_port
+///             .create_runloop_source(0)
+///             .expect("Somethings is bad ");
+///         current.add_source(&loop_source, kCFRunLoopCommonModes);
+///         tap.enable();
+///         CFRunLoop::run_current();
+///     },
+///     Err(_) => (assert!(false)),
+/// }
+/// ```
+pub struct CGEventTap<'tap_life> {
+    pub mach_port: CFMachPort,
+    pub callback_ref:
+        Box<dyn Fn(CGEventTapProxy, CGEventType, &CGEvent) -> Option<CGEvent> + 'tap_life>,
+}
+
+impl<'tap_life> CGEventTap<'tap_life> {
+    pub fn new<F: Fn(CGEventTapProxy, CGEventType, &CGEvent) -> Option<CGEvent> + 'tap_life>(
+        tap: CGEventTapLocation,
+        place: CGEventTapPlacement,
+        options: CGEventTapOptions,
+        events_of_interest: std::vec::Vec<CGEventType>,
+        callback: F,
+    ) -> Result<CGEventTap<'tap_life>, ()> {
+        let event_mask: CGEventMask = events_of_interest
+            .iter()
+            .fold(CGEventType::Null as CGEventMask, |mask, &etype| {
+                mask | CGEventMaskBit!(etype)
+            });
+        let cb = Box::new(Box::new(callback) as CGEventTapCallBackFn);
+        let cbr = Box::into_raw(cb);
+        unsafe {
+            let event_tap_ref = CGEventTapCreate(
+                tap,
+                place,
+                options,
+                event_mask,
+                cg_event_tap_callback_internal,
+                cbr as *const c_void,
+            );
+
+            if !event_tap_ref.is_null() {
+                Ok(Self {
+                    mach_port: (CFMachPort::wrap_under_create_rule(event_tap_ref)),
+                    callback_ref: Box::from_raw(cbr),
+                })
+            } else {
+                let _ = Box::from_raw(cbr);
+                Err(())
+            }
+        }
+    }
+
+    pub fn enable(&self) {
+        unsafe { CGEventTapEnable(self.mach_port.as_concrete_TypeRef(), true) }
+    }
+}
+
+foreign_type! {
+    #[doc(hidden)]
+    pub unsafe type CGEvent {
+        type CType = ::sys::CGEvent;
+        fn drop = |p| CFRelease(p as *mut _);
+        fn clone = |p| CFRetain(p as *const _) as *mut _;
+    }
+}
+
+impl CGEvent {
+    pub fn type_id() -> CFTypeID {
+        unsafe {
+            CGEventGetTypeID()
+        }
+    }
+
+    pub fn new(source: CGEventSource) -> Result<CGEvent, ()> {
+        unsafe {
+            let event_ref = CGEventCreate(source.as_ptr());
+            if !event_ref.is_null() {
+                Ok(Self::from_ptr(event_ref))
+            } else {
+                Err(())
+            }
+        }
+    }
+
+    pub fn new_keyboard_event(
+        source: CGEventSource,
+        keycode: CGKeyCode,
+        keydown: bool
+    ) -> Result<CGEvent, ()> {
+        unsafe {
+            let event_ref = CGEventCreateKeyboardEvent(source.as_ptr(), keycode, keydown);
+            if !event_ref.is_null() {
+                Ok(Self::from_ptr(event_ref))
+            } else {
+                Err(())
+            }
+        }
+    }
+
+    pub fn new_mouse_event(
+        source: CGEventSource,
+        mouse_type: CGEventType,
+        mouse_cursor_position: CGPoint,
+        mouse_button: CGMouseButton
+    ) -> Result<CGEvent, ()> {
+        unsafe {
+            let event_ref = CGEventCreateMouseEvent(source.as_ptr(), mouse_type,
+                mouse_cursor_position, mouse_button);
+            if !event_ref.is_null() {
+                Ok(Self::from_ptr(event_ref))
+            } else {
+                Err(())
+            }
+        }
+    }
+
+    #[cfg(feature = "highsierra")]
+    pub fn new_scroll_event(
+        source: CGEventSource,
+        units: CGScrollEventUnit,
+        wheel_count: u32,
+        wheel1: i32,
+        wheel2: i32,
+        wheel3: i32,
+    ) -> Result<CGEvent, ()> {
+        unsafe {
+            let event_ref = CGEventCreateScrollWheelEvent2(
+                source.as_ptr(),
+                units,
+                wheel_count,
+                wheel1,
+                wheel2,
+                wheel3,
+            );
+            if !event_ref.is_null() {
+                Ok(Self::from_ptr(event_ref))
+            } else {
+                Err(())
+            }
+        }
+    }
+
+    pub fn post(&self, tap_location: CGEventTapLocation) {
+        unsafe {
+            CGEventPost(tap_location, self.as_ptr());
+        }
+    }
+
+    pub fn post_from_tap(&self, tap_proxy: CGEventTapProxy) {
+        unsafe {
+            CGEventTapPostEvent(tap_proxy, self.as_ptr());
+        }
+    }
+
+    pub fn location(&self) -> CGPoint {
+        unsafe { CGEventGetLocation(self.as_ptr()) }
+    }
+
+    #[cfg(feature = "elcapitan")]
+    pub fn post_to_pid(&self, pid: libc::pid_t) {
+        unsafe {
+            CGEventPostToPid(pid, self.as_ptr());
+        }
+    }
+
+    pub fn set_flags(&self, flags: CGEventFlags) {
+        unsafe {
+            CGEventSetFlags(self.as_ptr(), flags);
+        }
+    }
+
+    pub fn get_flags(&self) -> CGEventFlags {
+        unsafe {
+            CGEventGetFlags(self.as_ptr())
+        }
+    }
+
+    pub fn set_type(&self, event_type: CGEventType) {
+        unsafe {
+            CGEventSetType(self.as_ptr(), event_type);
+        }
+    }
+
+    pub fn get_type(&self) -> CGEventType {
+        unsafe {
+            CGEventGetType(self.as_ptr())
+        }
+    }
+
+    pub fn set_string_from_utf16_unchecked(&self, buf: &[u16]) {
+        let buflen = buf.len() as libc::c_ulong;
+        unsafe {
+            CGEventKeyboardSetUnicodeString(self.as_ptr(), buflen, buf.as_ptr());
+        }
+    }
+
+    pub fn set_string(&self, string: &str) {
+        let buf: Vec<u16> = string.encode_utf16().collect();
+        self.set_string_from_utf16_unchecked(&buf);
+    }
+
+    pub fn get_integer_value_field(&self, field: CGEventField) -> i64 {
+        unsafe { CGEventGetIntegerValueField(self.as_ptr(), field) }
+    }
+
+    pub fn set_integer_value_field(&self, field: CGEventField, value: i64) {
+        unsafe { CGEventSetIntegerValueField(self.as_ptr(), field, value) }
+    }
+
+    pub fn get_double_value_field(&self, field: CGEventField) -> f64 {
+        unsafe { CGEventGetDoubleValueField(self.as_ptr(), field) }
+    }
+
+    pub fn set_double_value_field(&self, field: CGEventField, value: f64) {
+        unsafe { CGEventSetDoubleValueField(self.as_ptr(), field, value) }
+    }
+}
+
+#[link(name = "CoreGraphics", kind = "framework")]
+extern {
+    /// Return the type identifier for the opaque type `CGEventRef'.
+    fn CGEventGetTypeID() -> CFTypeID;
+
+    /// Return a new event using the event source `source'. If `source' is NULL,
+    /// the default source is used.
+    fn CGEventCreate(source: ::sys::CGEventSourceRef) -> ::sys::CGEventRef;
+
+    /// Return a new keyboard event.
+    ///
+    /// The event source may be taken from another event, or may be NULL. Based
+    /// on the virtual key code values entered, the appropriate key down, key up,
+    /// or flags changed events are generated.
+    ///
+    /// All keystrokes needed to generate a character must be entered, including
+    /// SHIFT, CONTROL, OPTION, and COMMAND keys. For example, to produce a 'Z',
+    /// the SHIFT key must be down, the 'z' key must go down, and then the SHIFT
+    /// and 'z' key must be released:
+    fn CGEventCreateKeyboardEvent(source: ::sys::CGEventSourceRef, keycode: CGKeyCode,
+        keydown: bool) -> ::sys::CGEventRef;
+
+    /// Return a new mouse event.
+    ///
+    /// The event source may be taken from another event, or may be NULL.
+    /// `mouseType' should be one of the mouse event types. `mouseCursorPosition'
+    /// should be the position of the mouse cursor in global coordinates.
+    /// `mouseButton' should be the button that's changing state; `mouseButton'
+    /// is ignored unless `mouseType' is one of `kCGEventOtherMouseDown',
+    /// `kCGEventOtherMouseDragged', or `kCGEventOtherMouseUp'.
+    ///
+    /// The current implementation of the event system supports a maximum of
+    /// thirty-two buttons. Mouse button 0 is the primary button on the mouse.
+    /// Mouse button 1 is the secondary mouse button (right). Mouse button 2 is
+    /// the center button, and the remaining buttons are in USB device order.
+    fn CGEventCreateMouseEvent(source: ::sys::CGEventSourceRef, mouseType: CGEventType,
+        mouseCursorPosition: CGPoint, mouseButton: CGMouseButton) -> ::sys::CGEventRef;
+
+    /// A non-variadic variant version of CGEventCreateScrollWheelEvent.
+    ///
+    /// Returns a new Quartz scrolling event.
+    ///
+    /// This function allows you to create a scrolling event and customize the
+    /// event before posting it to the event system.
+    #[cfg(feature = "highsierra")]
+    fn CGEventCreateScrollWheelEvent2(
+        source: ::sys::CGEventSourceRef,
+        units: CGScrollEventUnit,
+        wheelCount: u32,
+        wheel1: i32,
+        wheel2: i32,
+        wheel3: i32,
+    ) -> ::sys::CGEventRef;
+
+    /// Post an event into the event stream at a specified location.
+    ///
+    /// This function posts the specified event immediately before any event taps
+    /// instantiated for that location, and the event passes through any such
+    /// taps.
+    fn CGEventPost(tapLocation: CGEventTapLocation, event: ::sys::CGEventRef);
+
+    fn CGEventTapPostEvent(tapProxy: CGEventTapProxy, event: ::sys::CGEventRef);
+
+    #[cfg(feature = "elcapitan")]
+    /// Post an event to a specified process ID
+    fn CGEventPostToPid(pid: libc::pid_t, event: ::sys::CGEventRef);
+
+    /// Set the event flags of an event.
+    fn CGEventSetFlags(event: ::sys::CGEventRef, flags: CGEventFlags);
+
+    /// Return the event flags of an event.
+    fn CGEventGetFlags(event: ::sys::CGEventRef) -> CGEventFlags;
+
+    /// Return the location of an event in global display coordinates.
+    /// CGPointZero is returned if event is not a valid ::sys::CGEventRef.
+    fn CGEventGetLocation(event: ::sys::CGEventRef) -> CGPoint;
+
+    /// Set the event type of an event.
+    fn CGEventSetType(event: ::sys::CGEventRef, eventType: CGEventType);
+
+    /// Return the event type of an event (left mouse down, for example).
+    fn CGEventGetType(event: ::sys::CGEventRef) -> CGEventType;
+
+    /// Set the Unicode string associated with a keyboard event.
+    ///
+    /// By default, the system translates the virtual key code in a keyboard
+    /// event into a Unicode string based on the keyboard ID in the event
+    /// source.  This function allows you to manually override this string.
+    /// Note that application frameworks may ignore the Unicode string in a
+    /// keyboard event and do their own translation based on the virtual
+    /// keycode and perceived event state.
+    fn CGEventKeyboardSetUnicodeString(event: ::sys::CGEventRef,
+                                       length: libc::c_ulong,
+                                       string: *const u16);
+
+    /// Return the integer value of a field in an event.
+    fn CGEventGetIntegerValueField(event: ::sys::CGEventRef, field: CGEventField) -> i64;
+
+    /// Set the integer value of a field in an event.
+    ///
+    /// Before calling this function, the event type must be set using a typed
+    /// event creation function such as `CGEventCreateMouseEvent', or by
+    /// calling `CGEventSetType'.
+    ///
+    /// If you are creating a mouse event generated by a tablet, call this
+    /// function and specify the field `kCGMouseEventSubtype' with a value of
+    /// `kCGEventMouseSubtypeTabletPoint' or
+    /// `kCGEventMouseSubtypeTabletProximity' before setting other parameters.
+    fn CGEventSetIntegerValueField(event: ::sys::CGEventRef, field: CGEventField, value: i64);
+
+    /// Return the floating-point value of a field in an event.
+    ///
+    /// In cases where the field value is represented within the event by a fixed
+    /// point number or an integer, the result is scaled to the appropriate range
+    /// as part of creating the floating-point representation.
+    fn CGEventGetDoubleValueField(event: ::sys::CGEventRef, field: CGEventField) -> f64;
+
+    /// Set the floating-point value of a field in an event.
+    ///
+    /// Before calling this function, the event type must be set using a typed
+    /// event creation function such as `CGEventCreateMouseEvent', or by calling
+    /// `CGEventSetType'.
+    ///
+    /// In cases where the field’s value is represented within the event by a
+    /// fixed point number or integer, the value parameter is scaled as needed
+    /// and converted to the appropriate type.
+    fn CGEventSetDoubleValueField(event: ::sys::CGEventRef, field: CGEventField, value: f64);
+
+    // ::sys::CGEventTapRef is actually an CFMachPortRef
+    fn CGEventTapCreate(
+        tap: CGEventTapLocation,
+        place: CGEventTapPlacement,
+        options: CGEventTapOptions,
+        eventsOfInterest: CGEventMask,
+        callback: CGEventTapCallBackInternal,
+        userInfo: *const c_void,
+    ) -> CFMachPortRef;
+
+    fn CGEventTapEnable(tap: CFMachPortRef, enable: bool);
+
+}
diff --git a/third_party/rust/core-graphics/src/event_source.rs b/third_party/rust/core-graphics/src/event_source.rs
new file mode 100644
index 0000000000..6db64a2dca
--- /dev/null
+++ b/third_party/rust/core-graphics/src/event_source.rs
@@ -0,0 +1,48 @@
+use core_foundation::base::{CFRelease, CFRetain, CFTypeID};
+use foreign_types::ForeignType;
+
+/// Possible source states of an event source.
+#[repr(C)]
+#[derive(Clone, Copy, Debug)]
+pub enum CGEventSourceStateID {
+    Private = -1,
+    CombinedSessionState = 0,
+    HIDSystemState = 1,
+}
+
+foreign_type! {
+    #[doc(hidden)]
+    pub unsafe type CGEventSource {
+        type CType = ::sys::CGEventSource;
+        fn drop = |p| CFRelease(p as *mut _);
+        fn clone = |p| CFRetain(p as *const _) as *mut _;
+    }
+}
+
+impl CGEventSource {
+    pub fn type_id() -> CFTypeID {
+        unsafe {
+            CGEventSourceGetTypeID()
+        }
+    }
+
+    pub fn new(state_id: CGEventSourceStateID) -> Result<Self, ()> {
+        unsafe {
+            let event_source_ref = CGEventSourceCreate(state_id);
+            if !event_source_ref.is_null() {
+                Ok(Self::from_ptr(event_source_ref))
+            } else {
+                Err(())
+            }
+        }
+    }
+}
+
+#[link(name = "CoreGraphics", kind = "framework")]
+extern {
+    /// Return the type identifier for the opaque type `CGEventSourceRef'.
+    fn CGEventSourceGetTypeID() -> CFTypeID;
+
+    /// Return a Quartz event source created with a specified source state.
+    fn CGEventSourceCreate(stateID: CGEventSourceStateID) -> ::sys::CGEventSourceRef;
+}
diff --git a/third_party/rust/core-graphics/src/font.rs b/third_party/rust/core-graphics/src/font.rs
new file mode 100644
index 0000000000..739b8ddf32
--- /dev/null
+++ b/third_party/rust/core-graphics/src/font.rs
@@ -0,0 +1,171 @@
+// 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, 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;
+}
diff --git a/third_party/rust/core-graphics/src/geometry.rs b/third_party/rust/core-graphics/src/geometry.rs
new file mode 100644
index 0000000000..fd4dc977e6
--- /dev/null
+++ b/third_party/rust/core-graphics/src/geometry.rs
@@ -0,0 +1,10 @@
+// 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.
+
+pub use core_graphics_types::geometry::*;
\ No newline at end of file
diff --git a/third_party/rust/core-graphics/src/gradient.rs b/third_party/rust/core-graphics/src/gradient.rs
new file mode 100644
index 0000000000..a4fb2bf613
--- /dev/null
+++ b/third_party/rust/core-graphics/src/gradient.rs
@@ -0,0 +1,62 @@
+// 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.
+
+#![allow(non_upper_case_globals)]
+
+use base::CGFloat;
+use color::CGColor;
+use color_space::CGColorSpace;
+
+use core_foundation::array::{ CFArray, CFArrayRef };
+use core_foundation::base::{CFRelease, CFRetain, TCFType};
+use foreign_types::ForeignType;
+
+use libc::size_t;
+
+bitflags! {
+    #[repr(C)]
+    pub struct CGGradientDrawingOptions: u32 {
+        const CGGradientDrawsBeforeStartLocation = (1 << 0);
+        const CGGradientDrawsAfterEndLocation = (1 << 1);
+    }
+}
+
+foreign_type! {
+    #[doc(hidden)]
+    pub unsafe type CGGradient {
+        type CType = ::sys::CGGradient;
+        fn drop = |p| CFRelease(p as *mut _);
+        fn clone = |p| CFRetain(p as *const _) as *mut _;
+    }
+}
+
+impl CGGradient {
+    pub fn create_with_color_components(color_space: &CGColorSpace, components: &[CGFloat], locations: &[CGFloat], count: usize) -> CGGradient {
+        unsafe {
+            let result = CGGradientCreateWithColorComponents(color_space.as_ptr(), components.as_ptr(), locations.as_ptr(), count);
+            assert!(!result.is_null());
+            Self::from_ptr(result)
+        }
+    }
+
+    pub fn create_with_colors(color_space: &CGColorSpace, colors: &CFArray<CGColor>, locations: &[CGFloat]) -> CGGradient {
+        unsafe {
+            let result = CGGradientCreateWithColors(color_space.as_ptr(), colors.as_concrete_TypeRef(), locations.as_ptr());
+            assert!(!result.is_null());
+            Self::from_ptr(result)
+        }
+    }
+}
+
+#[link(name = "CoreGraphics", kind = "framework")]
+extern {
+    fn CGGradientCreateWithColorComponents(color_space: ::sys::CGColorSpaceRef, components: *const CGFloat, locations: *const CGFloat, count: size_t) -> ::sys::CGGradientRef;
+    fn CGGradientCreateWithColors(color_space: ::sys::CGColorSpaceRef, colors: CFArrayRef, locations: *const CGFloat) -> ::sys::CGGradientRef;
+}
+
diff --git a/third_party/rust/core-graphics/src/image.rs b/third_party/rust/core-graphics/src/image.rs
new file mode 100644
index 0000000000..9e9323f4a1
--- /dev/null
+++ b/third_party/rust/core-graphics/src/image.rs
@@ -0,0 +1,165 @@
+use std::ptr;
+
+use base::CGFloat;
+use core_foundation::base::{CFRetain, CFTypeID};
+use core_foundation::data::CFData;
+use color_space::CGColorSpace;
+use data_provider::{CGDataProviderRef, CGDataProvider};
+use geometry::CGRect;
+use libc::size_t;
+use foreign_types::{ForeignType, ForeignTypeRef};
+
+#[repr(C)]
+pub enum CGImageAlphaInfo {
+    CGImageAlphaNone, /* For example, RGB. */
+    CGImageAlphaPremultipliedLast, /* For example, premultiplied RGBA */
+    CGImageAlphaPremultipliedFirst, /* For example, premultiplied ARGB */
+    CGImageAlphaLast, /* For example, non-premultiplied RGBA */
+    CGImageAlphaFirst, /* For example, non-premultiplied ARGB */
+    CGImageAlphaNoneSkipLast, /* For example, RBGX. */
+    CGImageAlphaNoneSkipFirst, /* For example, XRBG. */
+    CGImageAlphaOnly /* No color data, alpha data only */
+}
+
+#[repr(C)]
+pub enum CGImageByteOrderInfo {
+    CGImageByteOrderMask = 0x7000,
+    CGImageByteOrder16Little = 1 << 12,
+    CGImageByteOrder32Little = 2 << 12,
+    CGImageByteOrder16Big = 3 << 12,
+    CGImageByteOrder32Big = 4 << 12
+}
+
+foreign_type! {
+    #[doc(hidden)]
+    pub unsafe type CGImage {
+        type CType = ::sys::CGImage;
+        fn drop = CGImageRelease;
+        fn clone = |p| CFRetain(p as *const _) as *mut _;
+    }
+}
+
+impl CGImage {
+    pub fn new(width: size_t,
+               height: size_t,
+               bits_per_component: size_t,
+               bits_per_pixel: size_t,
+               bytes_per_row: size_t,
+               colorspace: &CGColorSpace,
+               bitmap_info: u32,
+               provider: &CGDataProvider,
+               should_interpolate: bool,
+               rendering_intent: u32)
+               -> Self {
+        unsafe {
+            let result =  CGImageCreate(width,
+                                        height,
+                                        bits_per_component,
+                                        bits_per_pixel,
+                                        bytes_per_row,
+                                        colorspace.as_ptr(),
+                                        bitmap_info,
+                                        provider.as_ptr(),
+                                        ptr::null_mut(),
+                                        should_interpolate,
+                                        rendering_intent);
+            assert!(!result.is_null());
+            Self::from_ptr(result)
+        }
+    }
+
+    pub fn type_id() -> CFTypeID {
+        unsafe {
+            CGImageGetTypeID()
+        }
+    }
+}
+
+impl CGImageRef {
+    pub fn width(&self) -> size_t {
+        unsafe {
+            CGImageGetWidth(self.as_ptr())
+        }
+    }
+
+    pub fn height(&self) -> size_t {
+        unsafe {
+            CGImageGetHeight(self.as_ptr())
+        }
+    }
+
+    pub fn bits_per_component(&self) -> size_t {
+        unsafe {
+            CGImageGetBitsPerComponent(self.as_ptr())
+        }
+    }
+
+    pub fn bits_per_pixel(&self) -> size_t {
+        unsafe {
+            CGImageGetBitsPerPixel(self.as_ptr())
+        }
+    }
+
+    pub fn bytes_per_row(&self) -> size_t {
+        unsafe {
+            CGImageGetBytesPerRow(self.as_ptr())
+        }
+    }
+
+    pub fn color_space(&self) -> CGColorSpace {
+        unsafe {
+            let cs = CGImageGetColorSpace(self.as_ptr());
+            CFRetain(cs as *mut _);
+            CGColorSpace::from_ptr(cs)
+        }
+    }
+
+    /// Returns the raw image bytes wrapped in `CFData`. Note, the returned `CFData` owns the
+    /// underlying buffer.
+    pub fn data(&self) -> CFData {
+        let data_provider = unsafe {
+            CGDataProviderRef::from_ptr(CGImageGetDataProvider(self.as_ptr()))
+        };
+        data_provider.copy_data()
+    }
+
+    /// Returns a cropped image. If the `rect` specifies a rectangle which lies outside of the
+    /// image bounds, the `None` is returned.
+    pub fn cropped(&self, rect: CGRect) -> Option<CGImage> {
+        let image_ptr = unsafe { CGImageCreateWithImageInRect(self.as_ptr(), rect) };
+        if !image_ptr.is_null() {
+            Some(unsafe { CGImage::from_ptr(image_ptr) })
+        } else {
+            None
+        }
+    }
+}
+
+#[link(name = "CoreGraphics", kind = "framework")]
+extern {
+    fn CGImageGetTypeID() -> CFTypeID;
+    fn CGImageGetWidth(image: ::sys::CGImageRef) -> size_t;
+    fn CGImageGetHeight(image: ::sys::CGImageRef) -> size_t;
+    fn CGImageGetBitsPerComponent(image: ::sys::CGImageRef) -> size_t;
+    fn CGImageGetBitsPerPixel(image: ::sys::CGImageRef) -> size_t;
+    fn CGImageGetBytesPerRow(image: ::sys::CGImageRef) -> size_t;
+    fn CGImageGetColorSpace(image: ::sys::CGImageRef) -> ::sys::CGColorSpaceRef;
+    fn CGImageGetDataProvider(image: ::sys::CGImageRef) -> ::sys::CGDataProviderRef;
+    fn CGImageRelease(image: ::sys::CGImageRef);
+    fn CGImageCreate(width: size_t,
+                     height: size_t,
+                     bitsPerComponent: size_t,
+                     bitsPerPixel: size_t,
+                     bytesPerRow: size_t,
+                     space: ::sys::CGColorSpaceRef,
+                     bitmapInfo: u32,
+                     provider: ::sys::CGDataProviderRef,
+                     decode: *const CGFloat,
+                     shouldInterpolate: bool,
+                     intent: u32)
+                     -> ::sys::CGImageRef;
+    fn CGImageCreateWithImageInRect(image: ::sys::CGImageRef, rect: CGRect) -> ::sys::CGImageRef;
+
+    //fn CGImageGetAlphaInfo(image: ::sys::CGImageRef) -> CGImageAlphaInfo;
+    //fn CGImageCreateCopyWithColorSpace(image: ::sys::CGImageRef, space: ::sys::CGColorSpaceRef) -> ::sys::CGImageRef
+}
diff --git a/third_party/rust/core-graphics/src/lib.rs b/third_party/rust/core-graphics/src/lib.rs
new file mode 100644
index 0000000000..514558fb48
--- /dev/null
+++ b/third_party/rust/core-graphics/src/lib.rs
@@ -0,0 +1,45 @@
+// 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.
+
+extern crate libc;
+
+#[macro_use]
+extern crate core_foundation;
+
+#[macro_use]
+extern crate bitflags;
+
+#[macro_use]
+extern crate foreign_types;
+
+extern crate core_graphics_types;
+
+pub mod base;
+pub mod color;
+pub mod color_space;
+pub mod context;
+pub mod data_provider;
+#[cfg(target_os = "macos")]
+pub mod display;
+#[cfg(target_os = "macos")]
+pub mod event;
+#[cfg(target_os = "macos")]
+pub mod event_source;
+pub mod font;
+pub mod geometry;
+pub mod gradient;
+#[cfg(target_os = "macos")]
+pub mod window;
+#[cfg(target_os = "macos")]
+pub mod private;
+pub mod image;
+pub mod path;
+pub mod sys;
+#[cfg(target_os = "macos")]
+pub mod access;
\ No newline at end of file
diff --git a/third_party/rust/core-graphics/src/path.rs b/third_party/rust/core-graphics/src/path.rs
new file mode 100644
index 0000000000..c5ac93f40b
--- /dev/null
+++ b/third_party/rust/core-graphics/src/path.rs
@@ -0,0 +1,129 @@
+// Copyright 2017 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.
+
+pub use sys::CGPathRef as SysCGPathRef;
+
+use core_foundation::base::{CFRelease, CFRetain, CFTypeID};
+use foreign_types::ForeignType;
+use geometry::{CGAffineTransform, CGPoint, CGRect};
+use libc::c_void;
+use std::fmt::{self, Debug, Formatter};
+use std::marker::PhantomData;
+use std::ops::Deref;
+use std::ptr;
+use std::slice;
+
+foreign_type! {
+    #[doc(hidden)]
+    pub unsafe type CGPath {
+        type CType = ::sys::CGPath;
+        fn drop = |p| CFRelease(p as *mut _);
+        fn clone = |p| CFRetain(p as *const _) as *mut _;
+    }
+}
+
+impl CGPath {
+    pub fn from_rect(rect: CGRect, transform: Option<&CGAffineTransform>) -> CGPath {
+        unsafe {
+            let transform = match transform {
+                None => ptr::null(),
+                Some(transform) => transform as *const CGAffineTransform,
+            };
+            CGPath::from_ptr(CGPathCreateWithRect(rect, transform))
+        }
+    }
+
+    pub fn type_id() -> CFTypeID {
+        unsafe {
+            CGPathGetTypeID()
+        }
+    }
+
+    pub fn apply<'a, F>(&'a self, mut closure: &'a F) where F: FnMut(CGPathElementRef<'a>) {
+        unsafe {
+            CGPathApply(self.as_ptr(), &mut closure as *mut _ as *mut c_void, do_apply::<F>);
+        }
+
+        unsafe extern "C" fn do_apply<'a, F>(info: *mut c_void, element: *const CGPathElement)
+                                             where F: FnMut(CGPathElementRef<'a>) {
+            let closure = info as *mut *mut F;
+            (**closure)(CGPathElementRef::new(element))
+        }
+    }
+}
+
+#[repr(i32)]
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum CGPathElementType {
+    MoveToPoint = 0,
+    AddLineToPoint = 1,
+    AddQuadCurveToPoint = 2,
+    AddCurveToPoint = 3,
+    CloseSubpath = 4,
+}
+
+pub struct CGPathElementRef<'a> {
+    element: *const CGPathElement,
+    phantom: PhantomData<&'a CGPathElement>,
+}
+
+impl<'a> CGPathElementRef<'a> {
+    fn new<'b>(element: *const CGPathElement) -> CGPathElementRef<'b> {
+        CGPathElementRef {
+            element: element,
+            phantom: PhantomData,
+        }
+    }
+}
+
+impl<'a> Deref for CGPathElementRef<'a> {
+    type Target = CGPathElement;
+    fn deref(&self) -> &CGPathElement {
+        unsafe {
+            &*self.element
+        }
+    }
+}
+
+#[repr(C)]
+pub struct CGPathElement {
+    pub element_type: CGPathElementType,
+    points: *mut CGPoint,
+}
+
+impl Debug for CGPathElement {
+    fn fmt(&self, formatter: &mut Formatter) -> Result<(), fmt::Error> {
+        write!(formatter, "{:?}: {:?}", self.element_type, self.points())
+    }
+}
+
+impl CGPathElement {
+    pub fn points(&self) -> &[CGPoint] {
+        unsafe {
+            match self.element_type {
+                CGPathElementType::CloseSubpath => &[],
+                CGPathElementType::MoveToPoint | CGPathElementType::AddLineToPoint => {
+                    slice::from_raw_parts(self.points, 1)
+                }
+                CGPathElementType::AddQuadCurveToPoint => slice::from_raw_parts(self.points, 2),
+                CGPathElementType::AddCurveToPoint => slice::from_raw_parts(self.points, 3),
+            }
+        }
+    }
+}
+
+type CGPathApplierFunction = unsafe extern "C" fn(info: *mut c_void,
+                                                  element: *const CGPathElement);
+
+#[link(name = "CoreGraphics", kind = "framework")]
+extern {
+    fn CGPathCreateWithRect(rect: CGRect, transform: *const CGAffineTransform) -> ::sys::CGPathRef;
+    fn CGPathApply(path: ::sys::CGPathRef, info: *mut c_void, function: CGPathApplierFunction);
+    fn CGPathGetTypeID() -> CFTypeID;
+}
diff --git a/third_party/rust/core-graphics/src/private.rs b/third_party/rust/core-graphics/src/private.rs
new file mode 100644
index 0000000000..0bc193b408
--- /dev/null
+++ b/third_party/rust/core-graphics/src/private.rs
@@ -0,0 +1,116 @@
+// Copyright 2016 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.
+
+//! Evil private APIs.
+//!
+//! These are liable to change at any time. Use with caution!
+
+use geometry::CGRect;
+use libc::{c_int, c_uint};
+use std::ptr;
+
+pub struct CGSRegion {
+    region: ffi::CGSRegionRef,
+}
+
+impl Drop for CGSRegion {
+    fn drop(&mut self) {
+        unsafe {
+            ffi::CGSRegionRelease(self.region)
+        }
+    }
+}
+
+impl CGSRegion {
+    #[inline]
+    pub fn from_rect(rect: &CGRect) -> CGSRegion {
+        unsafe {
+            let mut region = ptr::null_mut();
+            assert!(ffi::CGSNewRegionWithRect(rect, &mut region) == 0);
+            CGSRegion {
+                region: region,
+            }
+        }
+    }
+
+    #[inline]
+    pub fn from_rects(rects: &[CGRect]) -> CGSRegion {
+        unsafe {
+            let mut region = ptr::null_mut();
+            assert!(ffi::CGSNewRegionWithRectList(rects.as_ptr(),
+                                                  rects.len() as c_uint,
+                                                  &mut region) == 0);
+            CGSRegion {
+                region: region,
+            }
+        }
+    }
+}
+
+/// This should always be memory-safe; the window server rejects any invalid surface IDs.
+pub struct CGSSurface {
+    context_id: c_uint,
+    window_number: c_int,
+    surface_id: c_uint,
+}
+
+impl CGSSurface {
+    #[inline]
+    pub fn from_ids(context_id: c_uint, window_number: c_int, surface_id: c_uint) -> CGSSurface {
+        CGSSurface {
+            context_id: context_id,
+            window_number: window_number,
+            surface_id: surface_id,
+        }
+    }
+
+    #[inline]
+    pub fn id(&self) -> c_uint {
+        self.surface_id
+    }
+
+    #[inline]
+    pub fn set_shape(&self, region: &CGSRegion) {
+        unsafe {
+            assert!(ffi::CGSSetSurfaceShape(self.context_id,
+                                            self.window_number,
+                                            self.surface_id,
+                                            region.region) == 0)
+        }
+    }
+}
+
+mod ffi {
+    use geometry::CGRect;
+    use libc::{c_int, c_uint};
+
+    // This is an enum so that we can't easily make instances of this opaque type.
+    pub enum CGSRegionObject {}
+
+    pub type CGError = OSStatus;
+    pub type CGSRegionRef = *mut CGSRegionObject;
+    pub type OSStatus = i32;
+
+    #[link(name = "CoreGraphics", kind = "framework")]
+    extern {
+        pub fn CGSRegionRelease(region: CGSRegionRef);
+        pub fn CGSNewRegionWithRect(rect: *const CGRect, outRegion: *mut CGSRegionRef) -> CGError;
+        pub fn CGSNewRegionWithRectList(rects: *const CGRect,
+                                        rectCount: c_uint,
+                                        outRegion: *mut CGSRegionRef)
+                                        -> CGError;
+
+        pub fn CGSSetSurfaceShape(contextID: c_uint,
+                                  windowNumber: c_int,
+                                  surfaceID: c_uint,
+                                  region: CGSRegionRef)
+                                  -> CGError;
+    }
+}
+
diff --git a/third_party/rust/core-graphics/src/sys.rs b/third_party/rust/core-graphics/src/sys.rs
new file mode 100644
index 0000000000..85df442d5f
--- /dev/null
+++ b/third_party/rust/core-graphics/src/sys.rs
@@ -0,0 +1,44 @@
+use std::os::raw::c_void;
+
+pub enum CGImage {}
+pub type CGImageRef = *mut CGImage;
+
+#[repr(C)]
+pub struct __CGColor(c_void);
+
+pub type CGColorRef = *const __CGColor;
+
+pub enum CGColorSpace {}
+pub type CGColorSpaceRef = *mut CGColorSpace;
+
+pub enum CGPath {}
+pub type CGPathRef = *mut CGPath;
+
+pub enum CGDataProvider {}
+pub type CGDataProviderRef = *mut CGDataProvider;
+
+pub enum CGFont {}
+pub type CGFontRef = *mut CGFont;
+
+pub enum CGContext {}
+pub type CGContextRef = *mut CGContext;
+
+pub enum CGGradient {}
+pub type CGGradientRef = *mut CGGradient;
+
+#[cfg(target_os = "macos")]
+mod macos {
+	pub enum CGEventTap {}
+	pub type CGEventTapRef = core_foundation::mach_port::CFMachPortRef;
+	pub enum CGEvent {}
+	pub type CGEventRef = *mut CGEvent;
+
+	pub enum CGEventSource {}
+	pub type CGEventSourceRef = *mut CGEventSource;
+
+	pub enum CGDisplayMode {}
+	pub type CGDisplayModeRef = *mut CGDisplayMode;
+}
+
+#[cfg(target_os = "macos")]
+pub use self::macos::*;
diff --git a/third_party/rust/core-graphics/src/window.rs b/third_party/rust/core-graphics/src/window.rs
new file mode 100644
index 0000000000..aa7293ff7f
--- /dev/null
+++ b/third_party/rust/core-graphics/src/window.rs
@@ -0,0 +1,149 @@
+// Copyright 2018 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.
+
+#![allow(non_upper_case_globals)]
+
+use core_foundation::array::{CFArray, CFArrayRef};
+use core_foundation::base::{CFType, TCFType};
+use core_foundation::dictionary::CFDictionary;
+use core_foundation::string::{CFString, CFStringRef};
+use foreign_types::ForeignType;
+
+use geometry::CGRect;
+use image::CGImage;
+use sys;
+
+pub type CGWindowID = u32;
+
+pub type CGWindowSharingType = u32;
+pub const kCGWindowSharingNone: CGWindowSharingType = 0;
+pub const kCGWindowSharingReadOnly: CGWindowSharingType = 1;
+pub const kCGWindowSharingReadWrite: CGWindowSharingType = 1;
+
+pub type CGWindowBackingType = u32;
+pub const kCGWindowBackingStoreRetained: CGWindowBackingType = 0;
+pub const kCGWindowBackingStoreNonretained: CGWindowBackingType = 1;
+pub const kCGWindowBackingStoreBuffered: CGWindowBackingType = 2;
+
+pub type CGWindowListOption = u32;
+pub const kCGWindowListOptionAll: CGWindowListOption = 1 << 0;
+pub const kCGWindowListOptionOnScreenOnly: CGWindowListOption = 1 << 1;
+pub const kCGWindowListOptionOnScreenAboveWindow: CGWindowListOption = 1 << 2;
+pub const kCGWindowListOptionOnScreenBelowWindow: CGWindowListOption = 1 << 3;
+pub const kCGWindowListOptionIncludingWindow: CGWindowListOption = 1 << 4;
+pub const kCGWindowListOptionExcludeDesktopElements: CGWindowListOption = 1 << 5;
+
+pub type CGWindowImageOption = u32;
+pub const kCGWindowImageDefault: CGWindowImageOption = 0;
+pub const kCGWindowImageBoundsIgnoreFraming: CGWindowImageOption = 1 << 0;
+pub const kCGWindowImageShouldBeOpaque: CGWindowImageOption = 1 << 1;
+pub const kCGWindowImageOnlyShadows: CGWindowImageOption = 1 << 2;
+pub const kCGWindowImageBestResolution: CGWindowImageOption = 1 << 3;
+pub const kCGWindowImageNominalResolution: CGWindowImageOption = 1 << 4;
+
+pub const kCGNullWindowID: CGWindowID = 0;
+
+pub fn copy_window_info(option: CGWindowListOption, relative_to_window: CGWindowID)
+                        -> Option<CFArray> {
+    unsafe {
+        let array = CGWindowListCopyWindowInfo(option, relative_to_window);
+        if array.is_null() {
+            None
+        } else {
+            Some(TCFType::wrap_under_create_rule(array))
+        }
+    }
+}
+
+pub fn create_window_list(option: CGWindowListOption, relative_to_window: CGWindowID)
+                          -> Option<CFArray<CGWindowID>> {
+    unsafe {
+        let array = CGWindowListCreate(option, relative_to_window);
+        if array.is_null() {
+            None
+        } else {
+            Some(TCFType::wrap_under_create_rule(array))
+        }
+    }
+}
+
+pub fn create_description_from_array(window_array: CFArray<CGWindowID>) ->
+                                     Option<CFArray<CFDictionary<CFString, CFType>>> {
+    unsafe {
+        let array = CGWindowListCreateDescriptionFromArray(window_array.as_concrete_TypeRef());
+        if array.is_null() {
+            None
+        } else {
+            Some(TCFType::wrap_under_create_rule(array))
+        }
+    }
+}
+
+pub fn create_image(screen_bounds: CGRect,
+                    list_option: CGWindowListOption,
+                    window_id: CGWindowID,
+                    image_option: CGWindowImageOption)
+                    -> Option<CGImage> {
+    unsafe {
+        let image = CGWindowListCreateImage(screen_bounds, list_option, window_id, image_option);
+        if image.is_null() {
+            None
+        } else {
+            Some(CGImage::from_ptr(image))
+        }
+    }
+}
+
+pub fn create_image_from_array(screen_bounds: CGRect,
+                               window_array: CFArray,
+                               image_option: CGWindowImageOption)
+                               -> Option<CGImage> {
+    unsafe {
+        let image = CGWindowListCreateImageFromArray(screen_bounds,
+                                                     window_array.as_concrete_TypeRef(),
+                                                     image_option);
+        if image.is_null() {
+            None
+        } else {
+            Some(CGImage::from_ptr(image))
+        }
+    }
+}
+
+#[link(name = "CoreGraphics", kind = "framework")]
+extern {
+    pub static kCGWindowNumber: CFStringRef;
+    pub static kCGWindowStoreType: CFStringRef;
+    pub static kCGWindowLayer: CFStringRef;
+    pub static kCGWindowBounds: CFStringRef;
+    pub static kCGWindowSharingState: CFStringRef;
+    pub static kCGWindowAlpha: CFStringRef;
+    pub static kCGWindowOwnerPID: CFStringRef;
+    pub static kCGWindowMemoryUsage: CFStringRef;
+    pub static kCGWindowWorkspace: CFStringRef;
+    pub static kCGWindowOwnerName: CFStringRef;
+    pub static kCGWindowName: CFStringRef;
+    pub static kCGWindowIsOnscreen: CFStringRef;
+    pub static kCGWindowBackingLocationVideoMemory: CFStringRef;
+
+    pub fn CGWindowListCopyWindowInfo(option: CGWindowListOption, relativeToWindow: CGWindowID)
+                                      -> CFArrayRef;
+    pub fn CGWindowListCreate(option: CGWindowListOption, relativeToWindow: CGWindowID)
+                              -> CFArrayRef;
+    pub fn CGWindowListCreateDescriptionFromArray(windowArray: CFArrayRef) -> CFArrayRef;
+    pub fn CGWindowListCreateImage(screenBounds: CGRect,
+                                   listOption: CGWindowListOption,
+                                   windowID: CGWindowID,
+                                   imageOption: CGWindowImageOption)
+                                   -> *mut sys::CGImage;
+    pub fn CGWindowListCreateImageFromArray(screenBounds: CGRect,
+                                            windowArray: CFArrayRef,
+                                            imageOption: CGWindowImageOption)
+                                            -> *mut sys::CGImage;
+}