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lib.rs
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lib.rs
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// Copyright 2017 GFX developers
//
// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
// http://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_snake_case)]
#![allow(non_upper_case_globals)]
#[macro_use]
extern crate bitflags;
#[macro_use]
extern crate log;
#[macro_use]
extern crate objc;
#[macro_use]
extern crate foreign_types;
use std::borrow::{Borrow, ToOwned};
use std::marker::PhantomData;
use std::mem;
use std::ops::Deref;
use std::os::raw::c_void;
use core_graphics::base::CGFloat;
use core_graphics::geometry::CGSize;
use foreign_types::ForeignType;
use objc::runtime::{Object, NO, YES};
use cocoa::foundation::NSUInteger;
fn nsstring_as_str(nsstr: &objc::runtime::Object) -> &str {
let bytes = unsafe {
let bytes: *const std::os::raw::c_char = msg_send![nsstr, UTF8String];
bytes as *const u8
};
let len: NSUInteger = unsafe { msg_send![nsstr, length] };
unsafe {
let bytes = std::slice::from_raw_parts(bytes, len as usize);
std::str::from_utf8(bytes).unwrap()
}
}
fn nsstring_from_str(string: &str) -> *mut objc::runtime::Object {
const UTF8_ENCODING: usize = 4;
let cls = class!(NSString);
let bytes = string.as_ptr() as *const c_void;
unsafe {
let obj: *mut objc::runtime::Object = msg_send![cls, alloc];
let obj: *mut objc::runtime::Object = msg_send![
obj,
initWithBytes:bytes
length:string.len()
encoding:UTF8_ENCODING
];
let _: *mut c_void = msg_send![obj, autorelease];
obj
}
}
macro_rules! foreign_obj_type {
{type CType = $raw_ident:ident;
pub struct $owned_ident:ident;
pub struct $ref_ident:ident;
type ParentType = $parent_ref:ident;
} => {
foreign_obj_type! {
type CType = $raw_ident;
pub struct $owned_ident;
pub struct $ref_ident;
}
impl ::std::ops::Deref for $ref_ident {
type Target = $parent_ref;
fn deref(&self) -> &$parent_ref {
unsafe { &*(self as *const $ref_ident as *const $parent_ref) }
}
}
};
{type CType = $raw_ident:ident;
pub struct $owned_ident:ident;
pub struct $ref_ident:ident;
} => {
foreign_type! {
type CType = $raw_ident;
fn drop = crate::obj_drop;
fn clone = crate::obj_clone;
pub struct $owned_ident;
pub struct $ref_ident;
}
unsafe impl ::objc::Message for $raw_ident {
}
unsafe impl ::objc::Message for $ref_ident {
}
impl ::std::fmt::Debug for $ref_ident {
fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
unsafe {
let string: *mut ::objc::runtime::Object = msg_send![self, debugDescription];
write!(f, "{}", crate::nsstring_as_str(&*string))
}
}
}
impl ::std::fmt::Debug for $owned_ident {
fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
::std::ops::Deref::deref(self).fmt(f)
}
}
};
}
macro_rules! try_objc {
{
$err_name: ident => $body:expr
} => {
{
let mut $err_name: *mut ::objc::runtime::Object = ::std::ptr::null_mut();
let value = $body;
if !$err_name.is_null() {
let desc: *mut Object = msg_send![$err_name, localizedDescription];
let compile_error: *const std::os::raw::c_char = msg_send![desc, UTF8String];
let message = CStr::from_ptr(compile_error).to_string_lossy().into_owned();
let () = msg_send![$err_name, release];
return Err(message);
}
value
}
};
}
pub struct NSArray<T> {
_phantom: PhantomData<T>,
}
pub struct Array<T>(*mut NSArray<T>)
where
T: ForeignType + 'static,
T::Ref: objc::Message + 'static;
pub struct ArrayRef<T>(foreign_types::Opaque, PhantomData<T>)
where
T: ForeignType + 'static,
T::Ref: objc::Message + 'static;
impl<T> Drop for Array<T>
where
T: ForeignType + 'static,
T::Ref: objc::Message + 'static,
{
fn drop(&mut self) {
unsafe {
let () = msg_send![self.0, release];
}
}
}
impl<T> Clone for Array<T>
where
T: ForeignType + 'static,
T::Ref: objc::Message + 'static,
{
fn clone(&self) -> Self {
unsafe { Array(msg_send![self.0, retain]) }
}
}
unsafe impl<T> objc::Message for NSArray<T>
where
T: ForeignType + 'static,
T::Ref: objc::Message + 'static,
{
}
unsafe impl<T> objc::Message for ArrayRef<T>
where
T: ForeignType + 'static,
T::Ref: objc::Message + 'static,
{
}
impl<T> Array<T>
where
T: ForeignType + 'static,
T::Ref: objc::Message + 'static,
{
pub fn from_slice<'a>(s: &[&T::Ref]) -> &'a ArrayRef<T> {
unsafe {
let class = class!(NSArray);
msg_send![class, arrayWithObjects: s.as_ptr() count: s.len()]
}
}
pub fn from_owned_slice<'a>(s: &[T]) -> &'a ArrayRef<T> {
unsafe {
let class = class!(NSArray);
msg_send![class, arrayWithObjects: s.as_ptr() count: s.len()]
}
}
}
impl<T> foreign_types::ForeignType for Array<T>
where
T: ForeignType + 'static,
T::Ref: objc::Message + 'static,
{
type CType = NSArray<T>;
type Ref = ArrayRef<T>;
unsafe fn from_ptr(p: *mut NSArray<T>) -> Self {
Array(p)
}
fn as_ptr(&self) -> *mut NSArray<T> {
self.0
}
}
impl<T> foreign_types::ForeignTypeRef for ArrayRef<T>
where
T: ForeignType + 'static,
T::Ref: objc::Message + 'static,
{
type CType = NSArray<T>;
}
impl<T> Deref for Array<T>
where
T: ForeignType + 'static,
T::Ref: objc::Message + 'static,
{
type Target = ArrayRef<T>;
fn deref(&self) -> &ArrayRef<T> {
unsafe { mem::transmute(self.as_ptr()) }
}
}
impl<T> Borrow<ArrayRef<T>> for Array<T>
where
T: ForeignType + 'static,
T::Ref: objc::Message + 'static,
{
fn borrow(&self) -> &ArrayRef<T> {
unsafe { mem::transmute(self.as_ptr()) }
}
}
impl<T> ToOwned for ArrayRef<T>
where
T: ForeignType + 'static,
T::Ref: objc::Message + 'static,
{
type Owned = Array<T>;
fn to_owned(&self) -> Array<T> {
unsafe { Array::from_ptr(msg_send![self, retain]) }
}
}
pub enum CAMetalDrawable {}
foreign_obj_type! {
type CType = CAMetalDrawable;
pub struct CoreAnimationDrawable;
pub struct CoreAnimationDrawableRef;
type ParentType = DrawableRef;
}
impl CoreAnimationDrawableRef {
pub fn texture(&self) -> &TextureRef {
unsafe { msg_send![self, texture] }
}
}
pub enum CAMetalLayer {}
foreign_obj_type! {
type CType = CAMetalLayer;
pub struct CoreAnimationLayer;
pub struct CoreAnimationLayerRef;
}
impl CoreAnimationLayer {
pub fn new() -> Self {
unsafe {
let class = class!(CAMetalLayer);
msg_send![class, new]
}
}
}
impl CoreAnimationLayerRef {
pub fn set_device(&self, device: &DeviceRef) {
unsafe { msg_send![self, setDevice: device] }
}
pub fn pixel_format(&self) -> MTLPixelFormat {
unsafe { msg_send![self, pixelFormat] }
}
pub fn set_pixel_format(&self, pixel_format: MTLPixelFormat) {
unsafe { msg_send![self, setPixelFormat: pixel_format] }
}
pub fn drawable_size(&self) -> CGSize {
unsafe { msg_send![self, drawableSize] }
}
pub fn set_drawable_size(&self, size: CGSize) {
unsafe { msg_send![self, setDrawableSize: size] }
}
pub fn presents_with_transaction(&self) -> bool {
unsafe {
match msg_send![self, presentsWithTransaction] {
YES => true,
NO => false,
_ => unreachable!(),
}
}
}
pub fn set_presents_with_transaction(&self, transaction: bool) {
unsafe { msg_send![self, setPresentsWithTransaction: transaction] }
}
pub fn set_edge_antialiasing_mask(&self, mask: u64) {
unsafe { msg_send![self, setEdgeAntialiasingMask: mask] }
}
pub fn set_masks_to_bounds(&self, masks: bool) {
unsafe { msg_send![self, setMasksToBounds: masks] }
}
pub fn remove_all_animations(&self) {
unsafe { msg_send![self, removeAllAnimations] }
}
pub fn next_drawable(&self) -> Option<&CoreAnimationDrawableRef> {
unsafe { msg_send![self, nextDrawable] }
}
pub fn set_contents_scale(&self, scale: CGFloat) {
unsafe { msg_send![self, setContentsScale: scale] }
}
}
mod argument;
mod buffer;
mod capturemanager;
mod commandbuffer;
mod commandqueue;
mod constants;
mod depthstencil;
mod device;
mod drawable;
mod encoder;
mod heap;
mod library;
mod pipeline;
mod renderpass;
mod resource;
mod sampler;
mod texture;
mod types;
mod vertexdescriptor;
pub use argument::*;
pub use buffer::*;
pub use capturemanager::*;
pub use commandbuffer::*;
pub use commandqueue::*;
pub use constants::*;
pub use depthstencil::*;
pub use device::*;
pub use drawable::*;
pub use encoder::*;
pub use heap::*;
pub use library::*;
pub use pipeline::*;
pub use renderpass::*;
pub use resource::*;
pub use sampler::*;
pub use texture::*;
pub use types::*;
pub use vertexdescriptor::*;
#[inline]
unsafe fn obj_drop<T>(p: *mut T) {
msg_send![(p as *mut Object), release]
}
#[inline]
unsafe fn obj_clone<T: 'static>(p: *mut T) -> *mut T {
msg_send![(p as *mut Object), retain]
}
#[allow(non_camel_case_types)]
type c_size_t = usize;