makepad-render 0.2.0

// stripped mac core foundation + metal layer only whats needed

#![allow(non_camel_case_types)]
#![allow(non_upper_case_globals)]

pub use makepad_objc_sys::runtime::{Class, Object, Protocol, Sel, BOOL, YES, NO};
pub use makepad_objc_sys::declare::ClassDecl;
pub use makepad_objc_sys::{msg_send, sel,  class, sel_impl};
pub use makepad_objc_sys::{Encode, Encoding};
//use bitflags::bitflags;

pub type id = *mut makepad_objc_sys::runtime::Object;
pub const nil: id = 0 as id;


#[link(name = "Foundation", kind = "framework")]
extern {
    pub static NSRunLoopCommonModes: id;
    pub static NSDefaultRunLoopMode: id;
}

#[link(name = "AppKit", kind = "framework")]
extern {
    pub static NSStringPboardType: id;
}

#[link(name = "CoreGraphics", kind = "framework")]
extern "C" {
    pub fn CGMainDisplayID() -> u32;
    pub fn CGDisplayPixelsHigh(display: u32) -> u64;
    pub fn CGColorCreateGenericRGB(red: f64, green: f64, blue: f64, alpha: f64) -> id;
}

#[link(name = "Metal", kind = "framework")]
extern "C" {
    fn MTLCreateSystemDefaultDevice() -> id;
    #[cfg(not(target_os = "ios"))]
    fn MTLCopyAllDevices() -> id; //TODO: Array
}

pub fn get_default_metal_device() -> Option<id> {
    unsafe {
        let dev = MTLCreateSystemDefaultDevice();
        if dev == nil{None} else {Some(dev)}
    }
}

#[link(name = "CoreGraphics", kind = "framework")]
extern {
}

pub fn get_all_metal_devices() -> Vec<id> {
    #[cfg(target_os = "ios")]
    {
        MTLCreateSystemDefaultDevice().into_iter().collect()
    }
    #[cfg(not(target_os = "ios"))]
    unsafe {
        let array = MTLCopyAllDevices();
        let count: u64 = msg_send![array, count];
        let ret = (0..count)
            .map( | i | msg_send![array, objectAtIndex: i])
        // The elements of this array are references---we convert them to owned references
        // (which just means that we increment the reference count here, and it is
        // decremented in the `Drop` impl for `Device`)
            .map( | device: *mut Object | msg_send![device, retain])
            .collect();
        let () = msg_send![array, release];
        ret
    }
}


pub fn nsstring_to_string(string: id) -> String {
    unsafe {
        let utf8_string: *const std::os::raw::c_uchar = msg_send![string, UTF8String];
        let utf8_len: usize = msg_send![string, lengthOfBytesUsingEncoding: UTF8_ENCODING];
        let slice = std::slice::from_raw_parts(
            utf8_string,
            utf8_len,
        );
        std::str::from_utf8_unchecked(slice).to_owned()
    }
}

pub fn str_to_nsstring(val: &str) -> id {
    unsafe {
        let ns_string: id = msg_send![class!(NSString), alloc];
        let ns_string: id = msg_send![
            ns_string,
            initWithBytes: val.as_ptr()
            length: val.len()
            encoding: UTF8_ENCODING as id
        ];
        ns_string
    }
}


pub fn load_native_cursor(cursor_name: &str) -> id {
    let sel = Sel::register(cursor_name);
    let id: id = unsafe {msg_send![class!(NSCursor), performSelector: sel]};
    id
}

pub fn load_undocumented_cursor(cursor_name: &str) -> id {
    unsafe {
        let class = class!(NSCursor);
        let sel = Sel::register(cursor_name);
        let sel: id = msg_send![class, respondsToSelector: sel];
        let id: id = msg_send![class, performSelector: sel];
        id
    }
}

pub fn load_webkit_cursor(cursor_name_str: &str) -> id {
    unsafe {
        static CURSOR_ROOT: &'static str = "/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/Resources/cursors";
        let cursor_root = str_to_nsstring(CURSOR_ROOT);
        let cursor_name = str_to_nsstring(cursor_name_str);
        let cursor_pdf = str_to_nsstring("cursor.pdf");
        let cursor_plist = str_to_nsstring("info.plist");
        let key_x = str_to_nsstring("hotx");
        let key_y = str_to_nsstring("hoty");
        
        let cursor_path: id = msg_send![cursor_root, stringByAppendingPathComponent: cursor_name];
        let pdf_path: id = msg_send![cursor_path, stringByAppendingPathComponent: cursor_pdf];
        let info_path: id = msg_send![cursor_path, stringByAppendingPathComponent: cursor_plist];
        
        let ns_image: id = msg_send![class!(NSImage), alloc];
        let () = msg_send![ns_image, initByReferencingFile: pdf_path];
        let info: id = msg_send![class!(NSDictionary), dictionaryWithContentsOfFile: info_path];
        //let image = NSImage::alloc(nil).initByReferencingFile_(pdf_path);
        // let info = NSDictionary::dictionaryWithContentsOfFile_(nil, info_path);
        
        let x: id = msg_send![info, valueForKey: key_x]; //info.valueForKey_(key_x);
        let y: id = msg_send![info, valueForKey: key_y]; //info.valueForKey_(key_y);
        let point = NSPoint {
            x: msg_send![x, doubleValue],
            y: msg_send![y, doubleValue],
        };
        let cursor: id = msg_send![class!(NSCursor), alloc];
        msg_send![cursor, initWithImage: ns_image hotSpot: point]
    }
}


#[repr(C)]
#[derive(Copy, Clone)]
pub struct NSPoint {
    pub x: f64,
    pub y: f64,
}


unsafe impl Encode for NSPoint {
    fn encode() -> Encoding {
        let encoding = format!("{{CGPoint={}{}}}", f64::encode().as_str(), f64::encode().as_str());
        unsafe {Encoding::from_str(&encoding)}
    }
}

#[repr(C)]
#[derive(Copy, Clone)]
pub struct NSSize {
    pub width: f64,
    pub height: f64,
}

unsafe impl Encode for NSSize {
    fn encode() -> Encoding {
        let encoding = format!("{{CGSize={}{}}}", f64::encode().as_str(), f64::encode().as_str());
        unsafe {Encoding::from_str(&encoding)}
    }
}


#[repr(C)]
#[derive(Copy, Clone)]
pub struct NSRect {
    pub origin: NSPoint,
    pub size: NSSize,
}

unsafe impl Encode for NSRect {
    fn encode() -> Encoding {
        let encoding = format!("{{CGRect={}{}}}", NSPoint::encode().as_str(), NSSize::encode().as_str());
        unsafe {Encoding::from_str(&encoding)}
    }
}

#[repr(u64)] // NSUInteger
pub enum NSEventModifierFlags {
    NSAlphaShiftKeyMask = 1 << 16,
    NSShiftKeyMask= 1 << 17,
    NSControlKeyMask = 1 << 18,
    NSAlternateKeyMask = 1 << 19,
    NSCommandKeyMask = 1 << 20,
    NSNumericPadKeyMask = 1 << 21,
    NSHelpKeyMask = 1 << 22,
    NSFunctionKeyMask = 1 << 23,
    NSDeviceIndependentModifierFlagsMask = 0xffff0000
}

const UTF8_ENCODING: usize = 4;

#[repr(u64)]
#[derive(Clone, Copy, Debug, PartialEq)]
pub enum NSWindowTitleVisibility {
    NSWindowTitleVisible = 0,
    NSWindowTitleHidden = 1
}

#[derive(Clone, Copy, Debug, PartialEq)]
#[repr(u64)] // NSUInteger
pub enum NSEventType {
    NSLeftMouseDown = 1,
    NSLeftMouseUp = 2,
    NSRightMouseDown = 3,
    NSRightMouseUp = 4,
    NSMouseMoved = 5,
    NSLeftMouseDragged = 6,
    NSRightMouseDragged = 7,
    NSMouseEntered = 8,
    NSMouseExited = 9,
    NSKeyDown = 10,
    NSKeyUp = 11,
    NSFlagsChanged = 12,
    NSAppKitDefined = 13,
    NSSystemDefined = 14,
    NSApplicationDefined = 15,
    NSPeriodic = 16,
    NSCursorUpdate = 17,
    NSScrollWheel = 22,
    NSTabletPoint = 23,
    NSTabletProximity = 24,
    NSOtherMouseDown = 25,
    NSOtherMouseUp = 26,
    NSOtherMouseDragged = 27,
    NSEventTypeGesture = 29,
    NSEventTypeMagnify = 30,
    NSEventTypeSwipe = 31,
    NSEventTypeRotate = 18,
    NSEventTypeBeginGesture = 19,
    NSEventTypeEndGesture = 20,
    NSEventTypePressure = 34,
}

#[repr(u64)] // NSUInteger
pub enum NSEventMask{
    NSLeftMouseDownMask = 1 << NSEventType::NSLeftMouseDown as u64,
    NSLeftMouseUpMask = 1 << NSEventType::NSLeftMouseUp as u64,
    NSRightMouseDownMask = 1 << NSEventType::NSRightMouseDown as u64,
    NSRightMouseUpMask = 1 << NSEventType::NSRightMouseUp as u64,
    NSMouseMovedMask = 1 << NSEventType::NSMouseMoved as u64,
    NSLeftMouseDraggedMask = 1 << NSEventType::NSLeftMouseDragged as u64,
    NSRightMouseDraggedMask = 1 << NSEventType::NSRightMouseDragged as u64,
    NSMouseEnteredMask = 1 << NSEventType::NSMouseEntered as u64,
    NSMouseExitedMask = 1 << NSEventType::NSMouseExited as u64,
    NSKeyDownMask = 1 << NSEventType::NSKeyDown as u64,
    NSKeyUpMask = 1 << NSEventType::NSKeyUp as u64,
    NSFlagsChangedMask = 1 << NSEventType::NSFlagsChanged as u64,
    NSAppKitDefinedMask = 1 << NSEventType::NSAppKitDefined as u64,
    NSSystemDefinedMask = 1 << NSEventType::NSSystemDefined as u64,
    NSApplicationDefinedMask = 1 << NSEventType::NSApplicationDefined as u64,
    NSPeriodicMask = 1 << NSEventType::NSPeriodic as u64,
    NSCursorUpdateMask = 1 << NSEventType::NSCursorUpdate as u64,
    NSScrollWheelMask = 1 << NSEventType::NSScrollWheel as u64,
    NSTabletPointMask = 1 << NSEventType::NSTabletPoint as u64,
    NSTabletProximityMask = 1 << NSEventType::NSTabletProximity as u64,
    NSOtherMouseDownMask = 1 << NSEventType::NSOtherMouseDown as u64,
    NSOtherMouseUpMask = 1 << NSEventType::NSOtherMouseUp as u64,
    NSOtherMouseDraggedMask = 1 << NSEventType::NSOtherMouseDragged as u64,
    NSEventMaskGesture = 1 << NSEventType::NSEventTypeGesture as u64,
    NSEventMaskSwipe = 1 << NSEventType::NSEventTypeSwipe as u64,
    NSEventMaskRotate = 1 << NSEventType::NSEventTypeRotate as u64,
    NSEventMaskBeginGesture = 1 << NSEventType::NSEventTypeBeginGesture as u64,
    NSEventMaskEndGesture = 1 << NSEventType::NSEventTypeEndGesture as u64,
    NSEventMaskPressure = 1 << NSEventType::NSEventTypePressure as u64,
    NSAnyEventMask = 0xffffffffffffffff
}

#[repr(u64)] // NSUInteger
pub enum NSWindowStyleMask{
    NSBorderlessWindowMask = 0,
    NSTitledWindowMask = 1 << 0,
    NSClosableWindowMask = 1 << 1,
    NSMiniaturizableWindowMask = 1 << 2,
    NSResizableWindowMask = 1 << 3,
    
    NSTexturedBackgroundWindowMask = 1 << 8,
    
    NSUnifiedTitleAndToolbarWindowMask = 1 << 12,
    
    NSFullScreenWindowMask = 1 << 14,
    
    NSFullSizeContentViewWindowMask = 1 << 15,
}

#[repr(u64)]
#[derive(Clone, Copy, Debug, PartialEq)]
pub enum NSApplicationActivationOptions {
    NSApplicationActivateAllWindows = 1 << 0,
    NSApplicationActivateIgnoringOtherApps = 1 << 1
}

#[repr(i64)]
#[derive(Clone, Copy, Debug, PartialEq)]
pub enum NSApplicationActivationPolicy {
    NSApplicationActivationPolicyRegular = 0,
    NSApplicationActivationPolicyAccessory = 1,
    NSApplicationActivationPolicyProhibited = 2,
    NSApplicationActivationPolicyERROR = -1
}

#[repr(u64)]
#[derive(Clone, Copy, Debug, PartialEq)]
pub enum NSBackingStoreType {
    NSBackingStoreRetained = 0,
    NSBackingStoreNonretained = 1,
    NSBackingStoreBuffered = 2
}

#[repr(C)]
pub struct NSRange {
    pub location: u64,
    pub length: u64,
}
/*
impl NSRange {
    #[inline]
    pub fn new(location: u64, length: u64) -> NSRange {
        NSRange {location, length}
    }
}*/

unsafe impl Encode for NSRange {
    fn encode() -> Encoding {
        let encoding = format!(
            // TODO: Verify that this is correct
            "{{NSRange={}{}}}",
            u64::encode().as_str(),
            u64::encode().as_str(),
        );
        unsafe {Encoding::from_str(&encoding)}
    }
}

pub trait NSMutableAttributedString: Sized {
    unsafe fn alloc(_: Self) -> id {
        msg_send![class!(NSMutableAttributedString), alloc]
    }
    
    unsafe fn init(self) -> id;
    // *mut NSMutableAttributedString
    unsafe fn init_with_string(self, string: id) -> id;
    unsafe fn init_with_attributed_string(self, string: id) -> id;
    
    unsafe fn string(self) -> id;
    // *mut NSString
    unsafe fn mutable_string(self) -> id;
    // *mut NSMutableString
    unsafe fn length(self) -> u64;
}

impl NSMutableAttributedString for id {
    unsafe fn init(self) -> id {
        msg_send![self, init]
    }
    
    unsafe fn init_with_string(self, string: id) -> id {
        msg_send![self, initWithString: string]
    }
    
    unsafe fn init_with_attributed_string(self, string: id) -> id {
        msg_send![self, initWithAttributedString: string]
    }
    
    unsafe fn string(self) -> id {
        msg_send![self, string]
    }
    
    unsafe fn mutable_string(self) -> id {
        msg_send![self, mutableString]
    }
    
    unsafe fn length(self) -> u64 {
        msg_send![self, length]
    }
}



// Metal API




#[repr(u64)]
#[derive(Clone, Debug)]
pub enum MTLLoadAction {
    DontCare = 0,
    Load = 1,
    Clear = 2,
}

#[repr(u64)]
#[derive(Clone, Debug)]
pub enum MTLStoreAction {
    DontCare = 0,
    Store = 1,
    MultisampleResolve = 2,
    StoreAndMultisampleResolve = 3,
    Unknown = 4,
    CustomSampleDepthStore = 5,
}

#[repr(C)]
#[derive(Clone, Debug)]
pub struct MTLClearColor {
    pub red: f64,
    pub green: f64,
    pub blue: f64,
    pub alpha: f64,
}

#[repr(u64)]
#[allow(non_camel_case_types)]
#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
pub enum MTLPixelFormat {
    BGRA8Unorm = 80,
    Depth32Float = 252,
    Stencil8 = 253,
    Depth24Unorm_Stencil8 = 255,
    Depth32Float_Stencil8 = 260,
}

#[repr(u64)]
#[allow(non_camel_case_types)]
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub enum MTLBlendFactor {
    Zero = 0,
    One = 1,
    SourceColor = 2,
    OneMinusSourceColor = 3,
    SourceAlpha = 4,
    OneMinusSourceAlpha = 5,
    DestinationColor = 6,
    OneMinusDestinationColor = 7,
    DestinationAlpha = 8,
    OneMinusDestinationAlpha = 9,
    SourceAlphaSaturated = 10,
    BlendColor = 11,
    OneMinusBlendColor = 12,
    BlendAlpha = 13,
    OneMinusBlendAlpha = 14,
    Source1Color = 15,
    OneMinusSource1Color = 16,
    Source1Alpha = 17,
    OneMinusSource1Alpha = 18,
}

#[repr(u64)]
#[allow(non_camel_case_types)]
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub enum MTLBlendOperation {
    Add = 0,
    Subtract = 1,
    ReverseSubtract = 2,
    Min = 3,
    Max = 4,
}

#[repr(u64)]
#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
pub enum MTLPrimitiveType {
    Point = 0,
    Line = 1,
    LineStrip = 2,
    Triangle = 3,
    TriangleStrip = 4,
}

#[repr(u64)]
#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
pub enum MTLIndexType {
    UInt16 = 0,
    UInt32 = 1,
}

#[repr(u64)]
pub enum MTLCompareFunction {
    Never = 0,
    Less = 1,
    Equal = 2,
    LessEqual = 3,
    Greater = 4,
    NotEqual = 5,
    GreaterEqual = 6,
    Always = 7,
}

#[repr(u64)]
#[allow(non_camel_case_types)]
#[derive(Copy, Clone, Debug, Hash, PartialEq, Eq)]
pub enum MTLTextureType {
    D1 = 0,
    D1Array = 1,
    D2 = 2,
    D2Array = 3,
    D2Multisample = 4,
    Cube = 5,
    CubeArray = 6,
    D3 = 7,
}

#[repr(u64)]
#[allow(non_camel_case_types)]
pub enum MTLTextureUsage {
    Unknown = 0x0000,
    ShaderRead = 0x0001,
    ShaderWrite = 0x0002,
    RenderTarget = 0x0004,
    PixelFormatView = 0x0010,
}

#[repr(u64)]
#[allow(non_camel_case_types)]
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub enum MTLStorageMode {
    Shared = 0,
    Managed = 1,
    Private = 2,
    Memoryless = 3,
}

#[repr(C)]
#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
pub struct MTLOrigin {
    pub x: u64,
    pub y: u64,
    pub z: u64,
}

#[repr(C)]
#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
pub struct MTLSize {
    pub width: u64,
    pub height: u64,
    pub depth: u64,
}

#[repr(C)]
#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
pub struct MTLRegion {
    pub origin: MTLOrigin,
    pub size: MTLSize,
}

#[repr(C)]
#[derive(Copy, Clone, Debug)]
pub struct CGSize {
    pub width: f64,
    pub height: f64,
}

#[repr(u64)]
#[allow(non_camel_case_types)]
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub enum MTLCPUCacheMode {
    DefaultCache = 0,
    WriteCombined = 1,
}

pub const MTLResourceCPUCacheModeShift: u64 = 0;
pub const MTLResourceCPUCacheModeMask: u64 = (0xf << MTLResourceCPUCacheModeShift);
pub const MTLResourceStorageModeShift: u64 = 4;
pub const MTLResourceStorageModeMask: u64 = (0xf << MTLResourceStorageModeShift);

#[allow(non_upper_case_globals)]
#[repr(u64)]
pub enum MTLResourceOptions {
    //CPUCacheModeDefaultCache  = (MTLCPUCacheMode::DefaultCache as u64) << MTLResourceCPUCacheModeShift,
    CPUCacheModeWriteCombined = (MTLCPUCacheMode::WriteCombined as u64) << MTLResourceCPUCacheModeShift,

    StorageModeShared  = (MTLStorageMode::Shared as u64)  << MTLResourceStorageModeShift,
    StorageModeManaged = (MTLStorageMode::Managed as u64) << MTLResourceStorageModeShift,
    StorageModePrivate = (MTLStorageMode::Private as u64) << MTLResourceStorageModeShift,
    StorageModeMemoryless = (MTLStorageMode::Memoryless as u64) << MTLResourceStorageModeShift,
}