Merge pull request #160 from glennw/mac-resize

Add callback function to allow resize messages to be sent on mac.
This commit is contained in:
tomaka 2014-12-18 20:51:48 +01:00
commit 70f9f8cf43
7 changed files with 112 additions and 36 deletions

View file

@ -15,10 +15,15 @@ android_start!(main)
fn main() { println!("This example requires glutin to be compiled with the `window` feature"); }
#[cfg(feature = "window")]
fn main() {
let window = glutin::Window::new().unwrap();
window.set_title("A fantastic window!");
fn resize_callback(width: uint, height: uint) {
println!("Window resized to {}x{}", width, height);
}
#[cfg(feature = "window")]
fn main() {
let mut window = glutin::Window::new().unwrap();
window.set_title("A fantastic window!");
window.set_window_resize_callback(Some(resize_callback));
unsafe { window.make_current() };
let context = support::load(&window);

View file

@ -273,6 +273,9 @@ impl Window {
pub fn get_api(&self) -> ::Api {
::Api::OpenGlEs
}
pub fn set_window_resize_callback(&mut self, _: Option<fn(uint, uint)>) {
}
}
#[cfg(feature = "window")]

View file

@ -482,6 +482,14 @@ impl Window {
proxy: self.window.create_window_proxy()
}
}
/// Sets a resize callback that is called by Mac (and potentially other
/// operating systems) during resize operations. This can be used to repaint
/// during window resizing.
#[experimental]
pub fn set_window_resize_callback(&mut self, callback: Option<fn(uint, uint)>) {
self.window.set_window_resize_callback(callback);
}
}
#[cfg(feature = "window")]
@ -542,6 +550,10 @@ impl HeadlessContext {
pub fn get_api(&self) -> Api {
self.context.get_api()
}
#[experimental]
pub fn set_window_resize_callback(&mut self, _: Option<fn(uint, uint)>) {
}
}
#[cfg(feature = "headless")]

View file

@ -18,12 +18,12 @@ use core_foundation::base::TCFType;
use core_foundation::string::CFString;
use core_foundation::bundle::{CFBundleGetBundleWithIdentifier, CFBundleGetFunctionPointerForName};
use std::cell::Cell;
use std::c_str::CString;
use std::mem;
use std::ptr;
use std::sync::atomic::{AtomicBool, Relaxed};
use events::Event::{MouseInput, MouseMoved, ReceivedCharacter, KeyboardInput, MouseWheel};
use events::Event::{MouseInput, MouseMoved, ReceivedCharacter, KeyboardInput, Resized, MouseWheel};
use events::ElementState::{Pressed, Released};
use events::MouseButton::{LeftMouseButton, RightMouseButton};
use events;
@ -42,25 +42,23 @@ static mut win_pressed: bool = false;
static mut alt_pressed: bool = false;
static DELEGATE_NAME: &'static [u8] = b"glutin_window_delegate\0";
static DELEGATE_THIS_IVAR: &'static [u8] = b"glutin_this";
static DELEGATE_STATE_IVAR: &'static [u8] = b"glutin_state";
struct InternalState {
is_closed: AtomicBool,
}
impl InternalState {
fn new() -> InternalState {
InternalState {
is_closed: AtomicBool::new(false),
}
}
struct DelegateState<'a> {
is_closed: bool,
context: id,
view: id,
handler: Option<fn(uint, uint)>,
}
pub struct Window {
view: id,
window: id,
context: id,
state: Box<InternalState>,
delegate: id,
resize: Option<fn(uint, uint)>,
is_closed: Cell<bool>,
}
#[cfg(feature = "window")]
@ -103,16 +101,36 @@ impl WindowProxy {
extern fn window_should_close(this: id, _: id) -> id {
unsafe {
let mut stored_value = ptr::null_mut();
object_getInstanceVariable(this, DELEGATE_THIS_IVAR.as_ptr() as *const i8, &mut stored_value);
let state = stored_value as *mut InternalState;
(*state).is_closed.store(true, Relaxed);
object_getInstanceVariable(this, DELEGATE_STATE_IVAR.as_ptr() as *const i8, &mut stored_value);
let state = stored_value as *mut DelegateState;
(*state).is_closed = true;
}
0
}
extern fn window_did_resize(this: id, _: id) -> id {
unsafe {
let mut stored_value = ptr::null_mut();
object_getInstanceVariable(this, DELEGATE_STATE_IVAR.as_ptr() as *const i8, &mut stored_value);
let state = &mut *(stored_value as *mut DelegateState);
let _: id = msg_send()(state.context, selector("update"));
match state.handler {
Some(handler) => {
let rect = NSView::frame(state.view);
(handler)(rect.size.width as uint, rect.size.height as uint);
}
None => {}
}
}
0
}
impl Window {
fn new_impl(dimensions: Option<(uint, uint)>, title: &str, monitor: Option<MonitorID>,
vsync: bool, visible: bool) -> Result<Window, CreationError> {
vsync: bool, _visible: bool) -> Result<Window, CreationError> {
let app = match Window::create_app() {
Some(app) => app,
None => { return Err(OsError(format!("Couldn't create NSApplication"))); },
@ -136,30 +154,33 @@ impl Window {
window.makeKeyAndOrderFront_(nil);
}
let window = Window {
view: view,
window: window,
context: context,
state: box InternalState::new(),
};
// Set up the window delegate to receive events
let ptr_size = mem::size_of::<libc::intptr_t>() as u64;
let ns_object = class("NSObject");
unsafe {
let delegate = unsafe {
// Create a delegate class, add callback methods and store InternalState as user data.
let delegate = objc_allocateClassPair(ns_object, DELEGATE_NAME.as_ptr() as *const i8, 0);
class_addMethod(delegate, selector("windowShouldClose:"), window_should_close, "B@:@".to_c_str().as_ptr());
class_addIvar(delegate, DELEGATE_THIS_IVAR.as_ptr() as *const i8, ptr_size, 3, "?".to_c_str().as_ptr());
class_addMethod(delegate, selector("windowDidResize:"), window_did_resize, "V@:@".to_c_str().as_ptr());
class_addIvar(delegate, DELEGATE_STATE_IVAR.as_ptr() as *const i8, ptr_size, 3, "?".to_c_str().as_ptr());
objc_registerClassPair(delegate);
let del_obj = msg_send()(delegate, selector("alloc"));
let del_obj: id = msg_send()(del_obj, selector("init"));
object_setInstanceVariable(del_obj, DELEGATE_THIS_IVAR.as_ptr() as *const i8,
&*window.state as *const InternalState as *mut libc::c_void);
let _: id = msg_send()(window.window, selector("setDelegate:"), del_obj);
}
let _: id = msg_send()(window, selector("setDelegate:"), del_obj);
del_obj
};
let window = Window {
view: view,
window: window,
context: context,
delegate: delegate,
resize: None,
is_closed: Cell::new(false),
};
Ok(window)
}
@ -267,7 +288,7 @@ impl Window {
}
pub fn is_closed(&self) -> bool {
self.state.is_closed.load(Relaxed)
self.is_closed.get()
}
pub fn set_title(&self, title: &str) {
@ -319,7 +340,26 @@ impl Window {
NSDefaultRunLoopMode,
true);
if event == nil { break; }
NSApp().sendEvent_(event);
{
// Create a temporary structure with state that delegates called internally
// by sendEvent can read and modify. When that returns, update window state.
// This allows the synchronous resize loop to continue issuing callbacks
// to the user application, by passing handler through to the delegate state.
let mut ds = DelegateState {
is_closed: self.is_closed.get(),
context: self.context,
view: self.view,
handler: self.resize,
};
object_setInstanceVariable(self.delegate,
DELEGATE_STATE_IVAR.as_ptr() as *const i8,
&mut ds as *mut DelegateState as *mut libc::c_void);
NSApp().sendEvent_(event);
object_setInstanceVariable(self.delegate,
DELEGATE_STATE_IVAR.as_ptr() as *const i8,
ptr::null_mut());
self.is_closed.set(ds.is_closed);
}
match event.get_type() {
NSLeftMouseDown => { events.push(MouseInput(Pressed, LeftMouseButton)); },
@ -434,4 +474,8 @@ impl Window {
pub fn get_api(&self) -> ::Api {
::Api::OpenGl
}
pub fn set_window_resize_callback(&mut self, callback: Option<fn(uint, uint)>) {
self.resize = callback;
}
}

View file

@ -46,6 +46,9 @@ impl HeadlessContext {
pub fn get_api(&self) -> ::Api {
::Api::OpenGl
}
pub fn set_window_resize_callback(&mut self, _: Option<fn(uint, uint)>) {
}
}
/// The Win32 implementation of the main `Window` object.
@ -276,6 +279,9 @@ impl Window {
pub fn get_api(&self) -> ::Api {
::Api::OpenGl
}
pub fn set_window_resize_callback(&mut self, _: Option<fn(uint, uint)>) {
}
}
#[unsafe_destructor]

View file

@ -52,6 +52,9 @@ impl HeadlessContext {
pub fn get_api(&self) -> ::Api {
::Api::OpenGl
}
pub fn set_window_resize_callback(&mut self, _: Option<fn(uint, uint)>) {
}
}
impl Drop for HeadlessContext {

View file

@ -598,4 +598,7 @@ impl Window {
pub fn get_api(&self) -> ::Api {
::Api::OpenGl
}
pub fn set_window_resize_callback(&mut self, _: Option<fn(uint, uint)>) {
}
}