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use libc;
use std::mem;
use super::DelegateState;
use Event;
use events::{ Touch, TouchPhase };
use objc::runtime::{ Class, Object, Sel, BOOL, YES };
use objc::declare::{ ClassDecl };
use super::ffi::{
longjmp,
id,
nil,
CGRect,
CGPoint,
CGFloat,
UIViewAutoresizingFlexibleWidth,
UIViewAutoresizingFlexibleHeight
};
use super::jmpbuf;
pub fn create_delegate_class() {
extern fn did_finish_launching(this: &mut Object, _: Sel, _: id, _: id) -> BOOL {
unsafe {
let main_screen: id = msg_send![Class::get("UIScreen").unwrap(), mainScreen];
let bounds: CGRect = msg_send![main_screen, bounds];
let scale: CGFloat = msg_send![main_screen, nativeScale];
let window: id = msg_send![Class::get("UIWindow").unwrap(), alloc];
let window: id = msg_send![window, initWithFrame:bounds.clone()];
let size = (bounds.size.width as u32, bounds.size.height as u32);
let view_controller: id = msg_send![Class::get("MainViewController").unwrap(), alloc];
let view_controller: id = msg_send![view_controller, init];
let class = Class::get("MainView").unwrap();
let view:id = msg_send![class, alloc];
let view:id = msg_send![view, initForGl:&bounds];
let _: () = msg_send![view_controller, setView:view];
let _: () = msg_send![window, setRootViewController:view_controller];
let _: () = msg_send![window, addSubview:view];
let _: () = msg_send![window, makeKeyAndVisible];
let state = Box::new(DelegateState::new(window, view_controller, view, size, scale as f32));
let state_ptr: *mut DelegateState = mem::transmute(state);
this.set_ivar("glutinState", state_ptr as *mut libc::c_void);
let _: () = msg_send![this, performSelector:sel!(postLaunch:) withObject:nil afterDelay:0.0];
}
YES
}
extern fn post_launch(_: &Object, _: Sel, _: id) {
unsafe { longjmp(mem::transmute(&mut jmpbuf),1); }
}
extern fn did_become_active(this: &Object, _: Sel, _: id) {
unsafe {
let state: *mut libc::c_void = *this.get_ivar("glutinState");
let state = &mut *(state as *mut DelegateState);
state.events_queue.push_back(Event::Focused(true));
}
}
extern fn will_resign_active(this: &Object, _: Sel, _: id) {
unsafe {
let state: *mut libc::c_void = *this.get_ivar("glutinState");
let state = &mut *(state as *mut DelegateState);
state.events_queue.push_back(Event::Focused(false));
}
}
extern fn will_enter_foreground(this: &Object, _: Sel, _: id) {
unsafe {
let state: *mut libc::c_void = *this.get_ivar("glutinState");
let state = &mut *(state as *mut DelegateState);
state.events_queue.push_back(Event::Suspended(false));
}
}
extern fn did_enter_background(this: &Object, _: Sel, _: id) {
unsafe {
let state: *mut libc::c_void = *this.get_ivar("glutinState");
let state = &mut *(state as *mut DelegateState);
state.events_queue.push_back(Event::Suspended(true));
}
}
extern fn will_terminate(this: &Object, _: Sel, _: id) {
unsafe {
let state: *mut libc::c_void = *this.get_ivar("glutinState");
let state = &mut *(state as *mut DelegateState);
// push event to the front to garantee that we'll process it
// immidiatly after jump
state.events_queue.push_front(Event::Closed);
longjmp(mem::transmute(&mut jmpbuf),1);
}
}
extern fn handle_touches(this: &Object, _: Sel, touches: id, _:id) {
unsafe {
let state: *mut libc::c_void = *this.get_ivar("glutinState");
let state = &mut *(state as *mut DelegateState);
let touches_enum: id = msg_send![touches, objectEnumerator];
loop {
let touch: id = msg_send![touches_enum, nextObject];
if touch == nil {
break
}
let location: CGPoint = msg_send![touch, locationInView:nil];
let touch_id = touch as u64;
let phase: i32 = msg_send![touch, phase];
state.events_queue.push_back(Event::Touch(Touch {
id: touch_id,
location: (location.x as f64, location.y as f64),
phase: match phase {
0 => TouchPhase::Started,
1 => TouchPhase::Moved,
// 2 is UITouchPhaseStationary and is not expected here
3 => TouchPhase::Ended,
4 => TouchPhase::Cancelled,
_ => panic!("unexpected touch phase: {:?}", phase)
}
}));
}
}
}
let superclass = Class::get("UIResponder").unwrap();
let mut decl = ClassDecl::new(superclass, "AppDelegate").unwrap();
unsafe {
decl.add_method(sel!(application:didFinishLaunchingWithOptions:),
did_finish_launching as extern fn(&mut Object, Sel, id, id) -> BOOL);
decl.add_method(sel!(applicationDidBecomeActive:),
did_become_active as extern fn(&Object, Sel, id));
decl.add_method(sel!(applicationWillResignActive:),
will_resign_active as extern fn(&Object, Sel, id));
decl.add_method(sel!(applicationWillEnterForeground:),
will_enter_foreground as extern fn(&Object, Sel, id));
decl.add_method(sel!(applicationDidEnterBackground:),
did_enter_background as extern fn(&Object, Sel, id));
decl.add_method(sel!(applicationWillTerminate:),
will_terminate as extern fn(&Object, Sel, id));
decl.add_method(sel!(touchesBegan:withEvent:),
handle_touches as extern fn(this: &Object, _: Sel, _: id, _:id));
decl.add_method(sel!(touchesMoved:withEvent:),
handle_touches as extern fn(this: &Object, _: Sel, _: id, _:id));
decl.add_method(sel!(touchesEnded:withEvent:),
handle_touches as extern fn(this: &Object, _: Sel, _: id, _:id));
decl.add_method(sel!(touchesCancelled:withEvent:),
handle_touches as extern fn(this: &Object, _: Sel, _: id, _:id));
decl.add_method(sel!(postLaunch:),
post_launch as extern fn(&Object, Sel, id));
decl.add_ivar::<*mut libc::c_void>("glutinState");
decl.register();
}
}
pub fn create_view_class() {
let superclass = Class::get("UIViewController").unwrap();
let decl = ClassDecl::new(superclass, "MainViewController").unwrap();
decl.register();
extern fn init_for_gl(this: &Object, _: Sel, frame: *const libc::c_void) -> id {
unsafe {
let bounds: *const CGRect = mem::transmute(frame);
let view: id = msg_send![this, initWithFrame:(*bounds).clone()];
let _: () = msg_send![view, setAutoresizingMask: UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight];
let _: () = msg_send![view, setAutoresizesSubviews:YES];
let layer: id = msg_send![view, layer];
let _ : () = msg_send![layer, setOpaque:YES];
view
}
}
extern fn layer_class(_: &Class, _: Sel) -> *const Class {
unsafe { mem::transmute(Class::get("CAEAGLLayer").unwrap()) }
}
let superclass = Class::get("UIView").unwrap();
let mut decl = ClassDecl::new(superclass, "MainView").unwrap();
unsafe {
decl.add_method(sel!(initForGl:),
init_for_gl as extern fn(&Object, Sel, *const libc::c_void) -> id);
decl.add_class_method(sel!(layerClass),
layer_class as extern fn(&Class, Sel) -> *const Class);
decl.register();
}
}
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