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-rw-r--r--src/api/cocoa/mod.rs741
1 files changed, 741 insertions, 0 deletions
diff --git a/src/api/cocoa/mod.rs b/src/api/cocoa/mod.rs
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+++ b/src/api/cocoa/mod.rs
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+#![cfg(target_os = "macos")]
+
+#[cfg(feature = "headless")]
+pub use self::headless::HeadlessContext;
+
+use {CreationError, Event, MouseCursor, CursorState};
+use CreationError::OsError;
+use libc;
+
+use Api;
+use BuilderAttribs;
+use GlRequest;
+use PixelFormat;
+use native_monitor::NativeMonitorId;
+
+use objc::runtime::{Class, Object, Sel, BOOL, YES, NO};
+use objc::declare::ClassDecl;
+
+use cocoa::base::{id, nil};
+use cocoa::foundation::{NSAutoreleasePool, NSDate, NSDefaultRunLoopMode, NSPoint, NSRect, NSSize,
+ NSString, NSUInteger};
+use cocoa::appkit;
+use cocoa::appkit::*;
+use cocoa::appkit::NSEventSubtype::*;
+
+use core_foundation::base::TCFType;
+use core_foundation::string::CFString;
+use core_foundation::bundle::{CFBundleGetBundleWithIdentifier, CFBundleGetFunctionPointerForName};
+
+use std::ffi::CStr;
+use std::collections::VecDeque;
+use std::str::FromStr;
+use std::str::from_utf8;
+use std::sync::Mutex;
+use std::ascii::AsciiExt;
+use std::ops::Deref;
+
+use events::Event::{Awakened, MouseInput, MouseMoved, ReceivedCharacter, KeyboardInput, MouseWheel, Closed};
+use events::ElementState::{Pressed, Released};
+use events::MouseButton;
+use events;
+
+pub use self::monitor::{MonitorID, get_available_monitors, get_primary_monitor};
+
+mod monitor;
+mod event;
+
+#[cfg(feature = "headless")]
+mod headless;
+
+static mut shift_pressed: bool = false;
+static mut ctrl_pressed: bool = false;
+static mut win_pressed: bool = false;
+static mut alt_pressed: bool = false;
+
+struct DelegateState {
+ is_closed: bool,
+ context: IdRef,
+ view: IdRef,
+ window: IdRef,
+ resize_handler: Option<fn(u32, u32)>,
+
+ /// Events that have been retreived with XLib but not dispatched with iterators yet
+ pending_events: Mutex<VecDeque<Event>>,
+}
+
+struct WindowDelegate {
+ state: Box<DelegateState>,
+ _this: IdRef,
+}
+
+impl WindowDelegate {
+ /// Get the delegate class, initiailizing it neccessary
+ fn class() -> *const Class {
+ use std::sync::{Once, ONCE_INIT};
+
+ extern fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
+ unsafe {
+ let state: *mut libc::c_void = *this.get_ivar("glutinState");
+ let state = state as *mut DelegateState;
+ (*state).is_closed = true;
+
+ (*state).pending_events.lock().unwrap().push_back(Closed);
+ }
+ YES
+ }
+
+ extern fn window_did_resize(this: &Object, _: Sel, _: id) {
+ unsafe {
+ let state: *mut libc::c_void = *this.get_ivar("glutinState");
+ let state = &mut *(state as *mut DelegateState);
+
+ let _: () = msg_send![*state.context, update];
+
+ if let Some(handler) = state.resize_handler {
+ let rect = NSView::frame(*state.view);
+ let scale_factor = NSWindow::backingScaleFactor(*state.window) as f32;
+ (handler)((scale_factor * rect.size.width as f32) as u32,
+ (scale_factor * rect.size.height as f32) as u32);
+ }
+ }
+ }
+
+ static mut delegate_class: *const Class = 0 as *const Class;
+ static INIT: Once = ONCE_INIT;
+
+ INIT.call_once(|| unsafe {
+ // Create new NSWindowDelegate
+ let superclass = Class::get("NSObject").unwrap();
+ let mut decl = ClassDecl::new(superclass, "GlutinWindowDelegate").unwrap();
+
+ // Add callback methods
+ decl.add_method(sel!(windowShouldClose:),
+ window_should_close as extern fn(&Object, Sel, id) -> BOOL);
+ decl.add_method(sel!(windowDidResize:),
+ window_did_resize as extern fn(&Object, Sel, id));
+
+ // Store internal state as user data
+ decl.add_ivar::<*mut libc::c_void>("glutinState");
+
+ delegate_class = decl.register();
+ });
+
+ unsafe {
+ delegate_class
+ }
+ }
+
+ fn new(state: DelegateState) -> WindowDelegate {
+ // Box the state so we can give a pointer to it
+ let mut state = Box::new(state);
+ let state_ptr: *mut DelegateState = &mut *state;
+ unsafe {
+ let delegate = IdRef::new(msg_send![WindowDelegate::class(), new]);
+
+ (&mut **delegate).set_ivar("glutinState", state_ptr as *mut libc::c_void);
+ let _: () = msg_send![*state.window, setDelegate:*delegate];
+
+ WindowDelegate { state: state, _this: delegate }
+ }
+ }
+}
+
+impl Drop for WindowDelegate {
+ fn drop(&mut self) {
+ unsafe {
+ // Nil the window's delegate so it doesn't still reference us
+ let _: () = msg_send![*self.state.window, setDelegate:nil];
+ }
+ }
+}
+
+pub struct Window {
+ view: IdRef,
+ window: IdRef,
+ context: IdRef,
+ delegate: WindowDelegate,
+}
+
+#[cfg(feature = "window")]
+unsafe impl Send for Window {}
+#[cfg(feature = "window")]
+unsafe impl Sync for Window {}
+
+#[cfg(feature = "window")]
+#[derive(Clone)]
+pub struct WindowProxy;
+
+impl WindowProxy {
+ pub fn wakeup_event_loop(&self) {
+ unsafe {
+ let pool = NSAutoreleasePool::new(nil);
+ let event =
+ NSEvent::otherEventWithType_location_modifierFlags_timestamp_windowNumber_context_subtype_data1_data2_(
+ nil, NSApplicationDefined, NSPoint::new(0.0, 0.0), NSEventModifierFlags::empty(),
+ 0.0, 0, nil, NSApplicationActivatedEventType, 0, 0);
+ NSApp().postEvent_atStart_(event, YES);
+ pool.drain();
+ }
+ }
+}
+
+pub struct PollEventsIterator<'a> {
+ window: &'a Window,
+}
+
+impl<'a> Iterator for PollEventsIterator<'a> {
+ type Item = Event;
+
+ fn next(&mut self) -> Option<Event> {
+ if let Some(ev) = self.window.delegate.state.pending_events.lock().unwrap().pop_front() {
+ return Some(ev);
+ }
+
+ unsafe {
+ let event = NSApp().nextEventMatchingMask_untilDate_inMode_dequeue_(
+ NSAnyEventMask.bits(),
+ NSDate::distantPast(nil),
+ NSDefaultRunLoopMode,
+ YES);
+ if event == nil { return None; }
+ NSApp().sendEvent_(event);
+
+ let event = match msg_send![event, type] {
+ NSLeftMouseDown => { Some(MouseInput(Pressed, MouseButton::Left)) },
+ NSLeftMouseUp => { Some(MouseInput(Released, MouseButton::Left)) },
+ NSRightMouseDown => { Some(MouseInput(Pressed, MouseButton::Right)) },
+ NSRightMouseUp => { Some(MouseInput(Released, MouseButton::Right)) },
+ NSMouseMoved |
+ NSLeftMouseDragged |
+ NSOtherMouseDragged |
+ NSRightMouseDragged => {
+ let window_point = event.locationInWindow();
+ let window: id = msg_send![event, window];
+ let view_point = if window == nil {
+ let window_rect = self.window.window.convertRectFromScreen_(NSRect::new(window_point, NSSize::new(0.0, 0.0)));
+ self.window.view.convertPoint_fromView_(window_rect.origin, nil)
+ } else {
+ self.window.view.convertPoint_fromView_(window_point, nil)
+ };
+ let view_rect = NSView::frame(*self.window.view);
+ let scale_factor = self.window.hidpi_factor();
+ Some(MouseMoved(((scale_factor * view_point.x as f32) as i32,
+ (scale_factor * (view_rect.size.height - view_point.y) as f32) as i32)))
+ },
+ NSKeyDown => {
+ let mut events = VecDeque::new();
+ let received_c_str = event.characters().UTF8String();
+ let received_str = CStr::from_ptr(received_c_str);
+ for received_char in from_utf8(received_str.to_bytes()).unwrap().chars() {
+ if received_char.is_ascii() {
+ events.push_back(ReceivedCharacter(received_char));
+ }
+ }
+
+ let vkey = event::vkeycode_to_element(NSEvent::keyCode(event));
+ events.push_back(KeyboardInput(Pressed, NSEvent::keyCode(event) as u8, vkey));
+ let event = events.pop_front();
+ self.window.delegate.state.pending_events.lock().unwrap().extend(events.into_iter());
+ event
+ },
+ NSKeyUp => {
+ let vkey = event::vkeycode_to_element(NSEvent::keyCode(event));
+ Some(KeyboardInput(Released, NSEvent::keyCode(event) as u8, vkey))
+ },
+ NSFlagsChanged => {
+ let mut events = VecDeque::new();
+ let shift_modifier = Window::modifier_event(event, appkit::NSShiftKeyMask, events::VirtualKeyCode::LShift, shift_pressed);
+ if shift_modifier.is_some() {
+ shift_pressed = !shift_pressed;
+ events.push_back(shift_modifier.unwrap());
+ }
+ let ctrl_modifier = Window::modifier_event(event, appkit::NSControlKeyMask, events::VirtualKeyCode::LControl, ctrl_pressed);
+ if ctrl_modifier.is_some() {
+ ctrl_pressed = !ctrl_pressed;
+ events.push_back(ctrl_modifier.unwrap());
+ }
+ let win_modifier = Window::modifier_event(event, appkit::NSCommandKeyMask, events::VirtualKeyCode::LWin, win_pressed);
+ if win_modifier.is_some() {
+ win_pressed = !win_pressed;
+ events.push_back(win_modifier.unwrap());
+ }
+ let alt_modifier = Window::modifier_event(event, appkit::NSAlternateKeyMask, events::VirtualKeyCode::LAlt, alt_pressed);
+ if alt_modifier.is_some() {
+ alt_pressed = !alt_pressed;
+ events.push_back(alt_modifier.unwrap());
+ }
+ let event = events.pop_front();
+ self.window.delegate.state.pending_events.lock().unwrap().extend(events.into_iter());
+ event
+ },
+ NSScrollWheel => { Some(MouseWheel(event.scrollingDeltaY() as i32)) },
+ _ => { None },
+ };
+
+
+
+ event
+ }
+ }
+}
+
+pub struct WaitEventsIterator<'a> {
+ window: &'a Window,
+}
+
+impl<'a> Iterator for WaitEventsIterator<'a> {
+ type Item = Event;
+
+ fn next(&mut self) -> Option<Event> {
+ loop {
+ if let Some(ev) = self.window.delegate.state.pending_events.lock().unwrap().pop_front() {
+ return Some(ev);
+ }
+
+ unsafe {
+ let event = NSApp().nextEventMatchingMask_untilDate_inMode_dequeue_(
+ NSAnyEventMask.bits(),
+ NSDate::distantFuture(nil),
+ NSDefaultRunLoopMode,
+ NO);
+ }
+
+ // calling poll_events()
+ if let Some(ev) = self.window.poll_events().next() {
+ return Some(ev);
+ } else {
+ return Some(Awakened);
+ }
+ }
+ }
+}
+
+impl Window {
+ #[cfg(feature = "window")]
+ pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> {
+ if builder.sharing.is_some() {
+ unimplemented!()
+ }
+
+ let app = match Window::create_app() {
+ Some(app) => app,
+ None => { return Err(OsError(format!("Couldn't create NSApplication"))); },
+ };
+ let window = match Window::create_window(builder.dimensions.unwrap_or((800, 600)),
+ &*builder.title,
+ builder.monitor)
+ {
+ Some(window) => window,
+ None => { return Err(OsError(format!("Couldn't create NSWindow"))); },
+ };
+ let view = match Window::create_view(*window) {
+ Some(view) => view,
+ None => { return Err(OsError(format!("Couldn't create NSView"))); },
+ };
+
+ let context = match Window::create_context(*view, builder.vsync, builder.gl_version) {
+ Some(context) => context,
+ None => { return Err(OsError(format!("Couldn't create OpenGL context"))); },
+ };
+
+ unsafe {
+ app.activateIgnoringOtherApps_(YES);
+ if builder.visible {
+ window.makeKeyAndOrderFront_(nil);
+ } else {
+ window.makeKeyWindow();
+ }
+ }
+
+ let ds = DelegateState {
+ is_closed: false,
+ context: context.clone(),
+ view: view.clone(),
+ window: window.clone(),
+ resize_handler: None,
+ pending_events: Mutex::new(VecDeque::new()),
+ };
+
+ let window = Window {
+ view: view,
+ window: window,
+ context: context,
+ delegate: WindowDelegate::new(ds),
+ };
+
+ Ok(window)
+ }
+
+ fn create_app() -> Option<id> {
+ unsafe {
+ let app = NSApp();
+ if app == nil {
+ None
+ } else {
+ app.setActivationPolicy_(NSApplicationActivationPolicyRegular);
+ app.finishLaunching();
+ Some(app)
+ }
+ }
+ }
+
+ fn create_window(dimensions: (u32, u32), title: &str, monitor: Option<MonitorID>) -> Option<IdRef> {
+ unsafe {
+ let screen = monitor.map(|monitor_id| {
+ let native_id = match monitor_id.get_native_identifier() {
+ NativeMonitorId::Numeric(num) => num,
+ _ => panic!("OS X monitors should always have a numeric native ID")
+ };
+ let matching_screen = {
+ let screens = NSScreen::screens(nil);
+ let count: NSUInteger = msg_send![screens, count];
+ let key = IdRef::new(NSString::alloc(nil).init_str("NSScreenNumber"));
+ let mut matching_screen: Option<id> = None;
+ for i in (0..count) {
+ let screen = msg_send![screens, objectAtIndex:i as NSUInteger];
+ let device_description = NSScreen::deviceDescription(screen);
+ let value: id = msg_send![device_description, objectForKey:*key];
+ if value != nil {
+ let screen_number: NSUInteger = msg_send![value, unsignedIntegerValue];
+ if screen_number as u32 == native_id {
+ matching_screen = Some(screen);
+ break;
+ }
+ }
+ }
+ matching_screen
+ };
+ matching_screen.unwrap_or(NSScreen::mainScreen(nil))
+ });
+ let frame = match screen {
+ Some(screen) => NSScreen::frame(screen),
+ None => {
+ let (width, height) = dimensions;
+ NSRect::new(NSPoint::new(0., 0.), NSSize::new(width as f64, height as f64))
+ }
+ };
+
+ let masks = if screen.is_some() {
+ NSBorderlessWindowMask as NSUInteger
+ } else {
+ NSTitledWindowMask as NSUInteger |
+ NSClosableWindowMask as NSUInteger |
+ NSMiniaturizableWindowMask as NSUInteger |
+ NSResizableWindowMask as NSUInteger
+ };
+
+ let window = IdRef::new(NSWindow::alloc(nil).initWithContentRect_styleMask_backing_defer_(
+ frame,
+ masks,
+ NSBackingStoreBuffered,
+ NO,
+ ));
+ window.non_nil().map(|window| {
+ let title = IdRef::new(NSString::alloc(nil).init_str(title));
+ window.setTitle_(*title);
+ window.setAcceptsMouseMovedEvents_(YES);
+ if screen.is_some() {
+ window.setLevel_(NSMainMenuWindowLevel as i64 + 1);
+ }
+ else {
+ window.center();
+ }
+ window
+ })
+ }
+ }
+
+ fn create_view(window: id) -> Option<IdRef> {
+ unsafe {
+ let view = IdRef::new(NSView::alloc(nil).init());
+ view.non_nil().map(|view| {
+ view.setWantsBestResolutionOpenGLSurface_(YES);
+ window.setContentView_(*view);
+ view
+ })
+ }
+ }
+
+ fn create_context(view: id, vsync: bool, gl_version: GlRequest) -> Option<IdRef> {
+ let profile = match gl_version {
+ GlRequest::Latest => NSOpenGLProfileVersion4_1Core as u32,
+ GlRequest::Specific(Api::OpenGl, (1 ... 2, _)) => NSOpenGLProfileVersionLegacy as u32,
+ GlRequest::Specific(Api::OpenGl, (3, 0)) => NSOpenGLProfileVersionLegacy as u32,
+ GlRequest::Specific(Api::OpenGl, (3, 1 ... 2)) => NSOpenGLProfileVersion3_2Core as u32,
+ GlRequest::Specific(Api::OpenGl, _) => NSOpenGLProfileVersion4_1Core as u32,
+ GlRequest::Specific(_, _) => panic!("Only the OpenGL API is supported"), // FIXME: return Result
+ GlRequest::GlThenGles { opengl_version: (1 ... 2, _), .. } => NSOpenGLProfileVersionLegacy as u32,
+ GlRequest::GlThenGles { opengl_version: (3, 0), .. } => NSOpenGLProfileVersionLegacy as u32,
+ GlRequest::GlThenGles { opengl_version: (3, 1 ... 2), .. } => NSOpenGLProfileVersion3_2Core as u32,
+ GlRequest::GlThenGles { .. } => NSOpenGLProfileVersion4_1Core as u32,
+ };
+ unsafe {
+ let attributes = [
+ NSOpenGLPFADoubleBuffer as u32,
+ NSOpenGLPFAClosestPolicy as u32,
+ NSOpenGLPFAColorSize as u32, 24,
+ NSOpenGLPFAAlphaSize as u32, 8,
+ NSOpenGLPFADepthSize as u32, 24,
+ NSOpenGLPFAStencilSize as u32, 8,
+ NSOpenGLPFAOpenGLProfile as u32, profile,
+ 0
+ ];
+
+ let pixelformat = IdRef::new(NSOpenGLPixelFormat::alloc(nil).initWithAttributes_(&attributes));
+ pixelformat.non_nil().map(|pixelformat| {
+ let context = IdRef::new(NSOpenGLContext::alloc(nil).initWithFormat_shareContext_(*pixelformat, nil));
+ context.non_nil().map(|context| {
+ context.setView_(view);
+ if vsync {
+ let value = 1;
+ context.setValues_forParameter_(&value, NSOpenGLContextParameter::NSOpenGLCPSwapInterval);
+ }
+ context
+ })
+ }).unwrap_or(None)
+ }
+ }
+
+ pub fn is_closed(&self) -> bool {
+ self.delegate.state.is_closed
+ }
+
+ pub fn set_title(&self, title: &str) {
+ unsafe {
+ let title = IdRef::new(NSString::alloc(nil).init_str(title));
+ self.window.setTitle_(*title);
+ }
+ }
+
+ pub fn show(&self) {
+ unsafe { NSWindow::makeKeyAndOrderFront_(*self.window, nil); }
+ }
+
+ pub fn hide(&self) {
+ unsafe { NSWindow::orderOut_(*self.window, nil); }
+ }
+
+ pub fn get_position(&self) -> Option<(i32, i32)> {
+ unsafe {
+ let content_rect = NSWindow::contentRectForFrameRect_(*self.window, NSWindow::frame(*self.window));
+ // NOTE: coordinate system might be inconsistent with other backends
+ Some((content_rect.origin.x as i32, content_rect.origin.y as i32))
+ }
+ }
+
+ pub fn set_position(&self, x: i32, y: i32) {
+ unsafe {
+ // NOTE: coordinate system might be inconsistent with other backends
+ NSWindow::setFrameOrigin_(*self.window, NSPoint::new(x as f64, y as f64));
+ }
+ }
+
+ pub fn get_inner_size(&self) -> Option<(u32, u32)> {
+ unsafe {
+ let view_frame = NSView::frame(*self.view);
+ Some((view_frame.size.width as u32, view_frame.size.height as u32))
+ }
+ }
+
+ pub fn get_outer_size(&self) -> Option<(u32, u32)> {
+ unsafe {
+ let window_frame = NSWindow::frame(*self.window);
+ Some((window_frame.size.width as u32, window_frame.size.height as u32))
+ }
+ }
+
+ pub fn set_inner_size(&self, width: u32, height: u32) {
+ unsafe {
+ NSWindow::setContentSize_(*self.window, NSSize::new(width as f64, height as f64));
+ }
+ }
+
+ pub fn create_window_proxy(&self) -> WindowProxy {
+ WindowProxy
+ }
+
+ pub fn poll_events(&self) -> PollEventsIterator {
+ PollEventsIterator {
+ window: self
+ }
+ }
+
+ pub fn wait_events(&self) -> WaitEventsIterator {
+ WaitEventsIterator {
+ window: self
+ }
+ }
+
+ unsafe fn modifier_event(event: id, keymask: NSEventModifierFlags, key: events::VirtualKeyCode, key_pressed: bool) -> Option<Event> {
+ if !key_pressed && NSEvent::modifierFlags(event).contains(keymask) {
+ return Some(KeyboardInput(Pressed, NSEvent::keyCode(event) as u8, Some(key)));
+ } else if key_pressed && !NSEvent::modifierFlags(event).contains(keymask) {
+ return Some(KeyboardInput(Released, NSEvent::keyCode(event) as u8, Some(key)));
+ }
+
+ return None;
+ }
+
+ pub unsafe fn make_current(&self) {
+ let _: () = msg_send![*self.context, update];
+ self.context.makeCurrentContext();
+ }
+
+ pub fn is_current(&self) -> bool {
+ unsafe {
+ let current = NSOpenGLContext::currentContext(nil);
+ if current != nil {
+ let is_equal: BOOL = msg_send![current, isEqual:*self.context];
+ is_equal != NO
+ } else {
+ false
+ }
+ }
+ }
+
+ pub fn get_proc_address(&self, _addr: &str) -> *const () {
+ let symbol_name: CFString = FromStr::from_str(_addr).unwrap();
+ let framework_name: CFString = FromStr::from_str("com.apple.opengl").unwrap();
+ let framework = unsafe {
+ CFBundleGetBundleWithIdentifier(framework_name.as_concrete_TypeRef())
+ };
+ let symbol = unsafe {
+ CFBundleGetFunctionPointerForName(framework, symbol_name.as_concrete_TypeRef())
+ };
+ symbol as *const ()
+ }
+
+ pub fn swap_buffers(&self) {
+ unsafe { self.context.flushBuffer(); }
+ }
+
+ pub fn platform_display(&self) -> *mut libc::c_void {
+ unimplemented!()
+ }
+
+ pub fn platform_window(&self) -> *mut libc::c_void {
+ unimplemented!()
+ }
+
+ pub fn get_api(&self) -> ::Api {
+ ::Api::OpenGl
+ }
+
+ pub fn get_pixel_format(&self) -> PixelFormat {
+ unimplemented!();
+ }
+
+ pub fn set_window_resize_callback(&mut self, callback: Option<fn(u32, u32)>) {
+ self.delegate.state.resize_handler = callback;
+ }
+
+ pub fn set_cursor(&self, cursor: MouseCursor) {
+ let cursor_name = match cursor {
+ MouseCursor::Arrow | MouseCursor::Default => "arrowCursor",
+ MouseCursor::Hand => "pointingHandCursor",
+ MouseCursor::Grabbing | MouseCursor::Grab => "closedHandCursor",
+ MouseCursor::Text => "IBeamCursor",
+ MouseCursor::VerticalText => "IBeamCursorForVerticalLayout",
+ MouseCursor::Copy => "dragCopyCursor",
+ MouseCursor::Alias => "dragLinkCursor",
+ MouseCursor::NotAllowed | MouseCursor::NoDrop => "operationNotAllowedCursor",
+ MouseCursor::ContextMenu => "contextualMenuCursor",
+ MouseCursor::Crosshair => "crosshairCursor",
+ MouseCursor::EResize => "resizeRightCursor",
+ MouseCursor::NResize => "resizeUpCursor",
+ MouseCursor::WResize => "resizeLeftCursor",
+ MouseCursor::SResize => "resizeDownCursor",
+ MouseCursor::EwResize | MouseCursor::ColResize => "resizeLeftRightCursor",
+ MouseCursor::NsResize | MouseCursor::RowResize => "resizeUpDownCursor",
+
+ /// TODO: Find appropriate OSX cursors
+ MouseCursor::NeResize | MouseCursor::NwResize |
+ MouseCursor::SeResize | MouseCursor::SwResize |
+ MouseCursor::NwseResize | MouseCursor::NeswResize |
+
+ MouseCursor::Cell | MouseCursor::NoneCursor |
+ MouseCursor::Wait | MouseCursor::Progress | MouseCursor::Help |
+ MouseCursor::Move | MouseCursor::AllScroll | MouseCursor::ZoomIn |
+ MouseCursor::ZoomOut => "arrowCursor",
+ };
+ let sel = Sel::register(cursor_name);
+ let cls = Class::get("NSCursor").unwrap();
+ unsafe {
+ use objc::MessageArguments;
+ let cursor: id = ().send(cls as *const _ as id, sel);
+ let _: () = msg_send![cursor, set];
+ }
+ }
+
+ pub fn set_cursor_state(&self, state: CursorState) -> Result<(), String> {
+ let cls = Class::get("NSCursor").unwrap();
+ match state {
+ CursorState::Normal => {
+ let _: () = unsafe { msg_send![cls, unhide] };
+ Ok(())
+ },
+ CursorState::Hide => {
+ let _: () = unsafe { msg_send![cls, hide] };
+ Ok(())
+ },
+ CursorState::Grab => {
+ Err("Mouse grabbing is unimplemented".to_string())
+ }
+ }
+ }
+
+ pub fn hidpi_factor(&self) -> f32 {
+ unsafe {
+ NSWindow::backingScaleFactor(*self.window) as f32
+ }
+ }
+
+ pub fn set_cursor_position(&self, x: i32, y: i32) -> Result<(), ()> {
+ unimplemented!();
+ }
+}
+
+struct IdRef(id);
+
+impl IdRef {
+ fn new(i: id) -> IdRef {
+ IdRef(i)
+ }
+
+ fn retain(i: id) -> IdRef {
+ if i != nil {
+ let _: id = unsafe { msg_send![i, retain] };
+ }
+ IdRef(i)
+ }
+
+ fn non_nil(self) -> Option<IdRef> {
+ if self.0 == nil { None } else { Some(self) }
+ }
+}
+
+impl Drop for IdRef {
+ fn drop(&mut self) {
+ if self.0 != nil {
+ let _: () = unsafe { msg_send![self.0, release] };
+ }
+ }
+}
+
+impl Deref for IdRef {
+ type Target = id;
+ fn deref<'a>(&'a self) -> &'a id {
+ &self.0
+ }
+}
+
+impl Clone for IdRef {
+ fn clone(&self) -> IdRef {
+ if self.0 != nil {
+ let _: id = unsafe { msg_send![self.0, retain] };
+ }
+ IdRef(self.0)
+ }
+}
+