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Diffstat (limited to 'src/cocoa/mod.rs')
| -rw-r--r-- | src/cocoa/mod.rs | 574 |
1 files changed, 574 insertions, 0 deletions
diff --git a/src/cocoa/mod.rs b/src/cocoa/mod.rs new file mode 100644 index 0000000..94ac5b3 --- /dev/null +++ b/src/cocoa/mod.rs @@ -0,0 +1,574 @@ +#[cfg(feature = "headless")] +pub use self::headless::HeadlessContext; + +use {CreationError, Event, MouseCursor}; +use CreationError::OsError; +use libc; + +use BuilderAttribs; + +use cocoa::base::{Class, id, YES, NO, NSUInteger, nil, objc_allocateClassPair, class, objc_registerClassPair}; +use cocoa::base::{selector, msg_send, msg_send_stret, class_addMethod, class_addIvar}; +use cocoa::base::{object_setInstanceVariable, object_getInstanceVariable}; +use cocoa::appkit; +use cocoa::appkit::*; + +use core_foundation::base::TCFType; +use core_foundation::string::CFString; +use core_foundation::bundle::{CFBundleGetBundleWithIdentifier, CFBundleGetFunctionPointerForName}; + +use std::cell::Cell; +use std::ffi::{CString, c_str_to_bytes}; +use std::mem; +use std::ptr; +use std::collections::RingBuf; +use std::str::FromStr; +use std::str::from_utf8; +use std::ascii::AsciiExt; + +use events::Event::{MouseInput, MouseMoved, ReceivedCharacter, KeyboardInput, MouseWheel}; +use events::ElementState::{Pressed, Released}; +use events::MouseButton::{LeftMouseButton, RightMouseButton}; +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<'a> { + is_closed: bool, + context: id, + view: id, + window: id, + handler: Option<fn(u32, u32)>, +} + +struct WindowDelegate { + this: id, +} + +impl WindowDelegate { + fn class_name() -> &'static [u8] { + b"GlutinWindowDelegate\0" + } + + fn state_ivar_name() -> &'static [u8] { + b"glutinState" + } + + /// Get the delegate class, initiailizing it neccessary + fn class() -> Class { + use std::sync::{Once, ONCE_INIT}; + use std::rt; + + extern fn window_should_close(this: id, _: id) -> id { + unsafe { + let delegate = WindowDelegate { this: this }; + (*delegate.get_state()).is_closed = true; + mem::forget(delegate); + } + 0 + } + + extern fn window_did_resize(this: id, _: id) -> id { + unsafe { + let delegate = WindowDelegate { this: this }; + let state = &mut *delegate.get_state(); + mem::forget(delegate); + + let _: id = msg_send()(state.context, selector("update")); + + if let Some(handler) = state.handler { + let rect = NSView::frame(state.view); + let scale_factor = state.window.backingScaleFactor() as f32; + (handler)((scale_factor * rect.size.width as f32) as u32, + (scale_factor * rect.size.height as f32) as u32); + } + } + 0 + } + + static mut delegate_class: Class = nil; + static mut init: Once = ONCE_INIT; + + unsafe { + init.call_once(|| { + let ptr_size = mem::size_of::<libc::intptr_t>(); + // Create new NSWindowDelegate + delegate_class = objc_allocateClassPair( + class("NSObject"), + WindowDelegate::class_name().as_ptr() as *const i8, 0); + // Add callback methods + class_addMethod(delegate_class, + selector("windowShouldClose:"), + window_should_close, + CString::from_slice("B@:@".as_bytes()).as_ptr()); + class_addMethod(delegate_class, + selector("windowDidResize:"), + window_did_resize, + CString::from_slice("V@:@".as_bytes()).as_ptr()); + // Store internal state as user data + class_addIvar(delegate_class, WindowDelegate::state_ivar_name().as_ptr() as *const i8, + ptr_size as u64, 3, + CString::from_slice("?".as_bytes()).as_ptr()); + objc_registerClassPair(delegate_class); + // Free class at exit + rt::at_exit(|| { + // objc_disposeClassPair(delegate_class); + }); + }); + delegate_class + } + } + + fn new(window: id) -> WindowDelegate { + unsafe { + let delegate: id = msg_send()(WindowDelegate::class(), selector("new")); + let _: id = msg_send()(window, selector("setDelegate:"), delegate); + WindowDelegate { this: delegate } + } + } + + unsafe fn set_state(&self, state: *mut DelegateState) { + object_setInstanceVariable(self.this, + WindowDelegate::state_ivar_name().as_ptr() as *const i8, + state as *mut libc::c_void); + } + + fn get_state(&self) -> *mut DelegateState { + unsafe { + let mut state = ptr::null_mut(); + object_getInstanceVariable(self.this, + WindowDelegate::state_ivar_name().as_ptr() as *const i8, + &mut state); + state as *mut DelegateState + } + } +} + +pub struct Window { + view: id, + window: id, + context: id, + delegate: WindowDelegate, + resize: Option<fn(u32, u32)>, + + is_closed: Cell<bool>, +} + +#[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), 0, 0.0, 0, ptr::null_mut(), 0, 0, 0); + NSApp().postEvent_atStart_(event, YES); + pool.drain(); + } + } +} + +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 window = Window { + view: view, + window: window, + context: context, + delegate: WindowDelegate::new(window), + resize: None, + + is_closed: Cell::new(false), + }; + + 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<id> { + unsafe { + let frame = if monitor.is_some() { + let screen = NSScreen::mainScreen(nil); + NSScreen::frame(screen) + } else { + let (width, height) = dimensions; + NSRect::new(NSPoint::new(0., 0.), NSSize::new(width as f64, height as f64)) + }; + + let masks = if monitor.is_some() { + NSBorderlessWindowMask as NSUInteger + } else { + NSTitledWindowMask as NSUInteger | + NSClosableWindowMask as NSUInteger | + NSMiniaturizableWindowMask as NSUInteger | + NSResizableWindowMask as NSUInteger + }; + + let window = NSWindow::alloc(nil).initWithContentRect_styleMask_backing_defer_( + frame, + masks, + NSBackingStoreBuffered, + NO, + ); + + if window == nil { + None + } else { + let title = NSString::alloc(nil).init_str(title); + window.setTitle_(title); + window.setAcceptsMouseMovedEvents_(YES); + if monitor.is_some() { + window.setLevel_(NSMainMenuWindowLevel as i64 + 1); + } + else { + window.center(); + } + Some(window) + } + } + } + + fn create_view(window: id) -> Option<id> { + unsafe { + let view = NSView::alloc(nil).init(); + if view == nil { + None + } else { + view.setWantsBestResolutionOpenGLSurface_(YES); + window.setContentView_(view); + Some(view) + } + } + } + + fn create_context(view: id, vsync: bool, gl_version: Option<(u32, u32)>) -> Option<id> { + let profile = match gl_version { + None | Some((0...2, _)) | Some((3, 0)) => NSOpenGLProfileVersionLegacy as u32, + Some((3, 1...2)) => NSOpenGLProfileVersion3_2Core as u32, + Some((_, _)) => 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 = NSOpenGLPixelFormat::alloc(nil).initWithAttributes_(&attributes); + if pixelformat == nil { + return None; + } + + let context = NSOpenGLContext::alloc(nil).initWithFormat_shareContext_(pixelformat, nil); + if context == nil { + None + } else { + context.setView_(view); + if vsync { + let value = 1; + context.setValues_forParameter_(&value, NSOpenGLContextParameter::NSOpenGLCPSwapInterval); + } + Some(context) + } + } + } + + pub fn is_closed(&self) -> bool { + self.is_closed.get() + } + + pub fn set_title(&self, title: &str) { + unsafe { + let title = 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)); + let content_rect: NSRect = msg_send_stret()(self.window, + selector("contentRectForFrameRect:"), + 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) -> RingBuf<Event> { + let mut events = RingBuf::new(); + + loop { + unsafe { + let event = NSApp().nextEventMatchingMask_untilDate_inMode_dequeue_( + NSAnyEventMask as u64, + NSDate::distantPast(nil), + NSDefaultRunLoopMode, + YES); + if event == nil { break; } + { + // 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, + window: self.window, + view: self.view, + handler: self.resize, + }; + self.delegate.set_state(&mut ds); + NSApp().sendEvent_(event); + self.delegate.set_state(ptr::null_mut()); + self.is_closed.set(ds.is_closed); + } + + match event.get_type() { + NSLeftMouseDown => { events.push_back(MouseInput(Pressed, LeftMouseButton)); }, + NSLeftMouseUp => { events.push_back(MouseInput(Released, LeftMouseButton)); }, + NSRightMouseDown => { events.push_back(MouseInput(Pressed, RightMouseButton)); }, + NSRightMouseUp => { events.push_back(MouseInput(Released, RightMouseButton)); }, + NSMouseMoved => { + let window_point = event.locationInWindow(); + let window: id = msg_send()(event, selector("window")); + let view_point = if window == 0 { + let window_rect = self.window.convertRectFromScreen_(NSRect::new(window_point, NSSize::new(0.0, 0.0))); + self.view.convertPoint_fromView_(window_rect.origin, nil) + } else { + self.view.convertPoint_fromView_(window_point, nil) + }; + let view_rect = NSView::frame(self.view); + let scale_factor = self.hidpi_factor(); + events.push_back(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 received_c_str = event.characters().UTF8String(); + let received_str = CString::from_slice(c_str_to_bytes(&received_c_str)); + for received_char in from_utf8(received_str.as_bytes()).unwrap().chars() { + if received_char.is_ascii() { + events.push_back(ReceivedCharacter(received_char)); + } + } + + let vkey = event::vkeycode_to_element(event.keycode()); + events.push_back(KeyboardInput(Pressed, event.keycode() as u8, vkey)); + }, + NSKeyUp => { + let vkey = event::vkeycode_to_element(event.keycode()); + events.push_back(KeyboardInput(Released, event.keycode() as u8, vkey)); + }, + NSFlagsChanged => { + let shift_modifier = Window::modifier_event(event, appkit::NSShiftKeyMask as u64, 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 as u64, 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 as u64, 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 as u64, events::VirtualKeyCode::LAlt, alt_pressed); + if alt_modifier.is_some() { + alt_pressed = !alt_pressed; + events.push_back(alt_modifier.unwrap()); + } + }, + NSScrollWheel => { events.push_back(MouseWheel(-event.scrollingDeltaY() as i32)); }, + NSOtherMouseDown => { }, + NSOtherMouseUp => { }, + NSOtherMouseDragged => { }, + _ => { }, + } + } + } + events + } + + unsafe fn modifier_event(event: id, keymask: u64, key: events::VirtualKeyCode, key_pressed: bool) -> Option<Event> { + if !key_pressed && Window::modifier_key_pressed(event, keymask) { + return Some(KeyboardInput(Pressed, event.keycode() as u8, Some(key))); + } + else if key_pressed && !Window::modifier_key_pressed(event, keymask) { + return Some(KeyboardInput(Released, event.keycode() as u8, Some(key))); + } + + return None; + } + + unsafe fn modifier_key_pressed(event: id, modifier: u64) -> bool { + event.modifierFlags() & modifier != 0 + } + + pub fn wait_events(&self) -> RingBuf<Event> { + unsafe { + let event = NSApp().nextEventMatchingMask_untilDate_inMode_dequeue_( + NSAnyEventMask as u64, + NSDate::distantFuture(nil), + NSDefaultRunLoopMode, + NO); + NSApp().sendEvent_(event); + + self.poll_events() + } + } + + pub unsafe fn make_current(&self) { + let _: id = msg_send()(self.context, selector("update")); + self.context.makeCurrentContext(); + } + + 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 get_api(&self) -> ::Api { + ::Api::OpenGl + } + + pub fn set_window_resize_callback(&mut self, callback: Option<fn(u32, u32)>) { + self.resize = callback; + } + + pub fn set_cursor(&self, cursor: MouseCursor) { + unimplemented!() + } + + pub fn hidpi_factor(&self) -> f32 { + unsafe { + self.window.backingScaleFactor() as f32 + } + } +} |