1use super::{BoolExt, MacDisplay, NSRange, NSStringExt, ns_string, renderer};
2use crate::{
3 AnyWindowHandle, Bounds, DisplayLink, ExternalPaths, FileDropEvent, ForegroundExecutor,
4 KeyDownEvent, Keystroke, Modifiers, ModifiersChangedEvent, MouseButton, MouseDownEvent,
5 MouseMoveEvent, MouseUpEvent, Pixels, PlatformAtlas, PlatformDisplay, PlatformInput,
6 PlatformWindow, Point, PromptButton, PromptLevel, RequestFrameOptions, ScaledPixels, Size,
7 Timer, WindowAppearance, WindowBackgroundAppearance, WindowBounds, WindowKind, WindowParams,
8 platform::PlatformInputHandler, point, px, size,
9};
10use block::ConcreteBlock;
11use cocoa::{
12 appkit::{
13 NSApplication, NSBackingStoreBuffered, NSColor, NSEvent, NSEventModifierFlags,
14 NSFilenamesPboardType, NSPasteboard, NSScreen, NSView, NSViewHeightSizable,
15 NSViewWidthSizable, NSWindow, NSWindowButton, NSWindowCollectionBehavior,
16 NSWindowOcclusionState, NSWindowStyleMask, NSWindowTitleVisibility,
17 },
18 base::{id, nil},
19 foundation::{
20 NSArray, NSAutoreleasePool, NSDictionary, NSFastEnumeration, NSInteger, NSNotFound,
21 NSOperatingSystemVersion, NSPoint, NSProcessInfo, NSRect, NSSize, NSString, NSUInteger,
22 },
23};
24use core_graphics::display::{CGDirectDisplayID, CGPoint, CGRect};
25use ctor::ctor;
26use futures::channel::oneshot;
27use objc::{
28 class,
29 declare::ClassDecl,
30 msg_send,
31 runtime::{BOOL, Class, NO, Object, Protocol, Sel, YES},
32 sel, sel_impl,
33};
34use parking_lot::Mutex;
35use raw_window_handle as rwh;
36use smallvec::SmallVec;
37use std::{
38 cell::Cell,
39 ffi::{CStr, c_void},
40 mem,
41 ops::Range,
42 path::PathBuf,
43 ptr::{self, NonNull},
44 rc::Rc,
45 sync::{Arc, Weak},
46 time::Duration,
47};
48use util::ResultExt;
49
50const WINDOW_STATE_IVAR: &str = "windowState";
51
52static mut WINDOW_CLASS: *const Class = ptr::null();
53static mut PANEL_CLASS: *const Class = ptr::null();
54static mut VIEW_CLASS: *const Class = ptr::null();
55
56#[allow(non_upper_case_globals)]
57const NSWindowStyleMaskNonactivatingPanel: NSWindowStyleMask =
58 NSWindowStyleMask::from_bits_retain(1 << 7);
59#[allow(non_upper_case_globals)]
60const NSNormalWindowLevel: NSInteger = 0;
61#[allow(non_upper_case_globals)]
62const NSPopUpWindowLevel: NSInteger = 101;
63#[allow(non_upper_case_globals)]
64const NSTrackingMouseEnteredAndExited: NSUInteger = 0x01;
65#[allow(non_upper_case_globals)]
66const NSTrackingMouseMoved: NSUInteger = 0x02;
67#[allow(non_upper_case_globals)]
68const NSTrackingActiveAlways: NSUInteger = 0x80;
69#[allow(non_upper_case_globals)]
70const NSTrackingInVisibleRect: NSUInteger = 0x200;
71#[allow(non_upper_case_globals)]
72const NSWindowAnimationBehaviorUtilityWindow: NSInteger = 4;
73#[allow(non_upper_case_globals)]
74const NSViewLayerContentsRedrawDuringViewResize: NSInteger = 2;
75// https://developer.apple.com/documentation/appkit/nsdragoperation
76type NSDragOperation = NSUInteger;
77#[allow(non_upper_case_globals)]
78const NSDragOperationNone: NSDragOperation = 0;
79#[allow(non_upper_case_globals)]
80const NSDragOperationCopy: NSDragOperation = 1;
81
82#[link(name = "CoreGraphics", kind = "framework")]
83unsafe extern "C" {
84 // Widely used private APIs; Apple uses them for their Terminal.app.
85 fn CGSMainConnectionID() -> id;
86 fn CGSSetWindowBackgroundBlurRadius(
87 connection_id: id,
88 window_id: NSInteger,
89 radius: i64,
90 ) -> i32;
91}
92
93#[ctor]
94unsafe fn build_classes() {
95 unsafe {
96 WINDOW_CLASS = build_window_class("GPUIWindow", class!(NSWindow));
97 PANEL_CLASS = build_window_class("GPUIPanel", class!(NSPanel));
98 VIEW_CLASS = {
99 let mut decl = ClassDecl::new("GPUIView", class!(NSView)).unwrap();
100 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
101 unsafe {
102 decl.add_method(sel!(dealloc), dealloc_view as extern "C" fn(&Object, Sel));
103
104 decl.add_method(
105 sel!(performKeyEquivalent:),
106 handle_key_equivalent as extern "C" fn(&Object, Sel, id) -> BOOL,
107 );
108 decl.add_method(
109 sel!(keyDown:),
110 handle_key_down as extern "C" fn(&Object, Sel, id),
111 );
112 decl.add_method(
113 sel!(keyUp:),
114 handle_key_up as extern "C" fn(&Object, Sel, id),
115 );
116 decl.add_method(
117 sel!(mouseDown:),
118 handle_view_event as extern "C" fn(&Object, Sel, id),
119 );
120 decl.add_method(
121 sel!(mouseUp:),
122 handle_view_event as extern "C" fn(&Object, Sel, id),
123 );
124 decl.add_method(
125 sel!(rightMouseDown:),
126 handle_view_event as extern "C" fn(&Object, Sel, id),
127 );
128 decl.add_method(
129 sel!(rightMouseUp:),
130 handle_view_event as extern "C" fn(&Object, Sel, id),
131 );
132 decl.add_method(
133 sel!(otherMouseDown:),
134 handle_view_event as extern "C" fn(&Object, Sel, id),
135 );
136 decl.add_method(
137 sel!(otherMouseUp:),
138 handle_view_event as extern "C" fn(&Object, Sel, id),
139 );
140 decl.add_method(
141 sel!(mouseMoved:),
142 handle_view_event as extern "C" fn(&Object, Sel, id),
143 );
144 decl.add_method(
145 sel!(mouseExited:),
146 handle_view_event as extern "C" fn(&Object, Sel, id),
147 );
148 decl.add_method(
149 sel!(mouseDragged:),
150 handle_view_event as extern "C" fn(&Object, Sel, id),
151 );
152 decl.add_method(
153 sel!(scrollWheel:),
154 handle_view_event as extern "C" fn(&Object, Sel, id),
155 );
156 decl.add_method(
157 sel!(swipeWithEvent:),
158 handle_view_event as extern "C" fn(&Object, Sel, id),
159 );
160 decl.add_method(
161 sel!(flagsChanged:),
162 handle_view_event as extern "C" fn(&Object, Sel, id),
163 );
164
165 decl.add_method(
166 sel!(makeBackingLayer),
167 make_backing_layer as extern "C" fn(&Object, Sel) -> id,
168 );
169
170 decl.add_protocol(Protocol::get("CALayerDelegate").unwrap());
171 decl.add_method(
172 sel!(viewDidChangeBackingProperties),
173 view_did_change_backing_properties as extern "C" fn(&Object, Sel),
174 );
175 decl.add_method(
176 sel!(setFrameSize:),
177 set_frame_size as extern "C" fn(&Object, Sel, NSSize),
178 );
179 decl.add_method(
180 sel!(displayLayer:),
181 display_layer as extern "C" fn(&Object, Sel, id),
182 );
183
184 decl.add_protocol(Protocol::get("NSTextInputClient").unwrap());
185 decl.add_method(
186 sel!(validAttributesForMarkedText),
187 valid_attributes_for_marked_text as extern "C" fn(&Object, Sel) -> id,
188 );
189 decl.add_method(
190 sel!(hasMarkedText),
191 has_marked_text as extern "C" fn(&Object, Sel) -> BOOL,
192 );
193 decl.add_method(
194 sel!(markedRange),
195 marked_range as extern "C" fn(&Object, Sel) -> NSRange,
196 );
197 decl.add_method(
198 sel!(selectedRange),
199 selected_range as extern "C" fn(&Object, Sel) -> NSRange,
200 );
201 decl.add_method(
202 sel!(firstRectForCharacterRange:actualRange:),
203 first_rect_for_character_range
204 as extern "C" fn(&Object, Sel, NSRange, id) -> NSRect,
205 );
206 decl.add_method(
207 sel!(insertText:replacementRange:),
208 insert_text as extern "C" fn(&Object, Sel, id, NSRange),
209 );
210 decl.add_method(
211 sel!(setMarkedText:selectedRange:replacementRange:),
212 set_marked_text as extern "C" fn(&Object, Sel, id, NSRange, NSRange),
213 );
214 decl.add_method(sel!(unmarkText), unmark_text as extern "C" fn(&Object, Sel));
215 decl.add_method(
216 sel!(attributedSubstringForProposedRange:actualRange:),
217 attributed_substring_for_proposed_range
218 as extern "C" fn(&Object, Sel, NSRange, *mut c_void) -> id,
219 );
220 decl.add_method(
221 sel!(viewDidChangeEffectiveAppearance),
222 view_did_change_effective_appearance as extern "C" fn(&Object, Sel),
223 );
224
225 // Suppress beep on keystrokes with modifier keys.
226 decl.add_method(
227 sel!(doCommandBySelector:),
228 do_command_by_selector as extern "C" fn(&Object, Sel, Sel),
229 );
230
231 decl.add_method(
232 sel!(acceptsFirstMouse:),
233 accepts_first_mouse as extern "C" fn(&Object, Sel, id) -> BOOL,
234 );
235
236 decl.add_method(
237 sel!(characterIndexForPoint:),
238 character_index_for_point as extern "C" fn(&Object, Sel, NSPoint) -> u64,
239 );
240 }
241 decl.register()
242 };
243 }
244}
245
246pub(crate) fn convert_mouse_position(position: NSPoint, window_height: Pixels) -> Point<Pixels> {
247 point(
248 px(position.x as f32),
249 // macOS screen coordinates are relative to bottom left
250 window_height - px(position.y as f32),
251 )
252}
253
254unsafe fn build_window_class(name: &'static str, superclass: &Class) -> *const Class {
255 unsafe {
256 let mut decl = ClassDecl::new(name, superclass).unwrap();
257 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
258 decl.add_method(sel!(dealloc), dealloc_window as extern "C" fn(&Object, Sel));
259
260 decl.add_method(
261 sel!(canBecomeMainWindow),
262 yes as extern "C" fn(&Object, Sel) -> BOOL,
263 );
264 decl.add_method(
265 sel!(canBecomeKeyWindow),
266 yes as extern "C" fn(&Object, Sel) -> BOOL,
267 );
268 decl.add_method(
269 sel!(windowDidResize:),
270 window_did_resize as extern "C" fn(&Object, Sel, id),
271 );
272 decl.add_method(
273 sel!(windowDidChangeOcclusionState:),
274 window_did_change_occlusion_state as extern "C" fn(&Object, Sel, id),
275 );
276 decl.add_method(
277 sel!(windowWillEnterFullScreen:),
278 window_will_enter_fullscreen as extern "C" fn(&Object, Sel, id),
279 );
280 decl.add_method(
281 sel!(windowWillExitFullScreen:),
282 window_will_exit_fullscreen as extern "C" fn(&Object, Sel, id),
283 );
284 decl.add_method(
285 sel!(windowDidMove:),
286 window_did_move as extern "C" fn(&Object, Sel, id),
287 );
288 decl.add_method(
289 sel!(windowDidChangeScreen:),
290 window_did_change_screen as extern "C" fn(&Object, Sel, id),
291 );
292 decl.add_method(
293 sel!(windowDidBecomeKey:),
294 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
295 );
296 decl.add_method(
297 sel!(windowDidResignKey:),
298 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
299 );
300 decl.add_method(
301 sel!(windowShouldClose:),
302 window_should_close as extern "C" fn(&Object, Sel, id) -> BOOL,
303 );
304
305 decl.add_method(sel!(close), close_window as extern "C" fn(&Object, Sel));
306
307 decl.add_method(
308 sel!(draggingEntered:),
309 dragging_entered as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
310 );
311 decl.add_method(
312 sel!(draggingUpdated:),
313 dragging_updated as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
314 );
315 decl.add_method(
316 sel!(draggingExited:),
317 dragging_exited as extern "C" fn(&Object, Sel, id),
318 );
319 decl.add_method(
320 sel!(performDragOperation:),
321 perform_drag_operation as extern "C" fn(&Object, Sel, id) -> BOOL,
322 );
323 decl.add_method(
324 sel!(concludeDragOperation:),
325 conclude_drag_operation as extern "C" fn(&Object, Sel, id),
326 );
327
328 decl.register()
329 }
330}
331
332struct MacWindowState {
333 handle: AnyWindowHandle,
334 executor: ForegroundExecutor,
335 native_window: id,
336 native_view: NonNull<Object>,
337 display_link: Option<DisplayLink>,
338 renderer: renderer::Renderer,
339 request_frame_callback: Option<Box<dyn FnMut(RequestFrameOptions)>>,
340 event_callback: Option<Box<dyn FnMut(PlatformInput) -> crate::DispatchEventResult>>,
341 activate_callback: Option<Box<dyn FnMut(bool)>>,
342 resize_callback: Option<Box<dyn FnMut(Size<Pixels>, f32)>>,
343 moved_callback: Option<Box<dyn FnMut()>>,
344 should_close_callback: Option<Box<dyn FnMut() -> bool>>,
345 close_callback: Option<Box<dyn FnOnce()>>,
346 appearance_changed_callback: Option<Box<dyn FnMut()>>,
347 input_handler: Option<PlatformInputHandler>,
348 last_key_equivalent: Option<KeyDownEvent>,
349 synthetic_drag_counter: usize,
350 traffic_light_position: Option<Point<Pixels>>,
351 transparent_titlebar: bool,
352 previous_modifiers_changed_event: Option<PlatformInput>,
353 keystroke_for_do_command: Option<Keystroke>,
354 do_command_handled: Option<bool>,
355 external_files_dragged: bool,
356 // Whether the next left-mouse click is also the focusing click.
357 first_mouse: bool,
358 fullscreen_restore_bounds: Bounds<Pixels>,
359}
360
361impl MacWindowState {
362 fn move_traffic_light(&self) {
363 if let Some(traffic_light_position) = self.traffic_light_position {
364 if self.is_fullscreen() {
365 // Moving traffic lights while fullscreen doesn't work,
366 // see https://github.com/zed-industries/zed/issues/4712
367 return;
368 }
369
370 let titlebar_height = self.titlebar_height();
371
372 unsafe {
373 let close_button: id = msg_send![
374 self.native_window,
375 standardWindowButton: NSWindowButton::NSWindowCloseButton
376 ];
377 let min_button: id = msg_send![
378 self.native_window,
379 standardWindowButton: NSWindowButton::NSWindowMiniaturizeButton
380 ];
381 let zoom_button: id = msg_send![
382 self.native_window,
383 standardWindowButton: NSWindowButton::NSWindowZoomButton
384 ];
385
386 let mut close_button_frame: CGRect = msg_send![close_button, frame];
387 let mut min_button_frame: CGRect = msg_send![min_button, frame];
388 let mut zoom_button_frame: CGRect = msg_send![zoom_button, frame];
389 let mut origin = point(
390 traffic_light_position.x,
391 titlebar_height
392 - traffic_light_position.y
393 - px(close_button_frame.size.height as f32),
394 );
395 let button_spacing =
396 px((min_button_frame.origin.x - close_button_frame.origin.x) as f32);
397
398 close_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
399 let _: () = msg_send![close_button, setFrame: close_button_frame];
400 origin.x += button_spacing;
401
402 min_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
403 let _: () = msg_send![min_button, setFrame: min_button_frame];
404 origin.x += button_spacing;
405
406 zoom_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
407 let _: () = msg_send![zoom_button, setFrame: zoom_button_frame];
408 origin.x += button_spacing;
409 }
410 }
411 }
412
413 fn start_display_link(&mut self) {
414 self.stop_display_link();
415 unsafe {
416 if !self
417 .native_window
418 .occlusionState()
419 .contains(NSWindowOcclusionState::NSWindowOcclusionStateVisible)
420 {
421 return;
422 }
423 }
424 let display_id = unsafe { display_id_for_screen(self.native_window.screen()) };
425 if let Some(mut display_link) =
426 DisplayLink::new(display_id, self.native_view.as_ptr() as *mut c_void, step).log_err()
427 {
428 display_link.start().log_err();
429 self.display_link = Some(display_link);
430 }
431 }
432
433 fn stop_display_link(&mut self) {
434 self.display_link = None;
435 }
436
437 fn is_maximized(&self) -> bool {
438 unsafe {
439 let bounds = self.bounds();
440 let screen_size = self.native_window.screen().visibleFrame().into();
441 bounds.size == screen_size
442 }
443 }
444
445 fn is_fullscreen(&self) -> bool {
446 unsafe {
447 let style_mask = self.native_window.styleMask();
448 style_mask.contains(NSWindowStyleMask::NSFullScreenWindowMask)
449 }
450 }
451
452 fn bounds(&self) -> Bounds<Pixels> {
453 let mut window_frame = unsafe { NSWindow::frame(self.native_window) };
454 let screen_frame = unsafe {
455 let screen = NSWindow::screen(self.native_window);
456 NSScreen::frame(screen)
457 };
458
459 // Flip the y coordinate to be top-left origin
460 window_frame.origin.y =
461 screen_frame.size.height - window_frame.origin.y - window_frame.size.height;
462
463 Bounds::new(
464 point(
465 px((window_frame.origin.x - screen_frame.origin.x) as f32),
466 px((window_frame.origin.y + screen_frame.origin.y) as f32),
467 ),
468 size(
469 px(window_frame.size.width as f32),
470 px(window_frame.size.height as f32),
471 ),
472 )
473 }
474
475 fn content_size(&self) -> Size<Pixels> {
476 let NSSize { width, height, .. } =
477 unsafe { NSView::frame(self.native_window.contentView()) }.size;
478 size(px(width as f32), px(height as f32))
479 }
480
481 fn scale_factor(&self) -> f32 {
482 get_scale_factor(self.native_window)
483 }
484
485 fn titlebar_height(&self) -> Pixels {
486 unsafe {
487 let frame = NSWindow::frame(self.native_window);
488 let content_layout_rect: CGRect = msg_send![self.native_window, contentLayoutRect];
489 px((frame.size.height - content_layout_rect.size.height) as f32)
490 }
491 }
492
493 fn window_bounds(&self) -> WindowBounds {
494 if self.is_fullscreen() {
495 WindowBounds::Fullscreen(self.fullscreen_restore_bounds)
496 } else {
497 WindowBounds::Windowed(self.bounds())
498 }
499 }
500}
501
502unsafe impl Send for MacWindowState {}
503
504pub(crate) struct MacWindow(Arc<Mutex<MacWindowState>>);
505
506impl MacWindow {
507 pub fn open(
508 handle: AnyWindowHandle,
509 WindowParams {
510 bounds,
511 titlebar,
512 kind,
513 is_movable,
514 focus,
515 show,
516 display_id,
517 window_min_size,
518 }: WindowParams,
519 executor: ForegroundExecutor,
520 renderer_context: renderer::Context,
521 ) -> Self {
522 unsafe {
523 let pool = NSAutoreleasePool::new(nil);
524
525 let () = msg_send![class!(NSWindow), setAllowsAutomaticWindowTabbing: NO];
526
527 let mut style_mask;
528 if let Some(titlebar) = titlebar.as_ref() {
529 style_mask = NSWindowStyleMask::NSClosableWindowMask
530 | NSWindowStyleMask::NSMiniaturizableWindowMask
531 | NSWindowStyleMask::NSResizableWindowMask
532 | NSWindowStyleMask::NSTitledWindowMask;
533
534 if titlebar.appears_transparent {
535 style_mask |= NSWindowStyleMask::NSFullSizeContentViewWindowMask;
536 }
537 } else {
538 style_mask = NSWindowStyleMask::NSTitledWindowMask
539 | NSWindowStyleMask::NSFullSizeContentViewWindowMask;
540 }
541
542 let native_window: id = match kind {
543 WindowKind::Normal => msg_send![WINDOW_CLASS, alloc],
544 WindowKind::PopUp => {
545 style_mask |= NSWindowStyleMaskNonactivatingPanel;
546 msg_send![PANEL_CLASS, alloc]
547 }
548 };
549
550 let display = display_id
551 .and_then(MacDisplay::find_by_id)
552 .unwrap_or_else(MacDisplay::primary);
553
554 let mut target_screen = nil;
555 let mut screen_frame = None;
556
557 let screens = NSScreen::screens(nil);
558 let count: u64 = cocoa::foundation::NSArray::count(screens);
559 for i in 0..count {
560 let screen = cocoa::foundation::NSArray::objectAtIndex(screens, i);
561 let frame = NSScreen::frame(screen);
562 let display_id = display_id_for_screen(screen);
563 if display_id == display.0 {
564 screen_frame = Some(frame);
565 target_screen = screen;
566 }
567 }
568
569 let screen_frame = screen_frame.unwrap_or_else(|| {
570 let screen = NSScreen::mainScreen(nil);
571 target_screen = screen;
572 NSScreen::frame(screen)
573 });
574
575 let window_rect = NSRect::new(
576 NSPoint::new(
577 screen_frame.origin.x + bounds.origin.x.0 as f64,
578 screen_frame.origin.y
579 + (display.bounds().size.height - bounds.origin.y).0 as f64,
580 ),
581 NSSize::new(bounds.size.width.0 as f64, bounds.size.height.0 as f64),
582 );
583
584 let native_window = native_window.initWithContentRect_styleMask_backing_defer_screen_(
585 window_rect,
586 style_mask,
587 NSBackingStoreBuffered,
588 NO,
589 target_screen,
590 );
591 assert!(!native_window.is_null());
592 let () = msg_send![
593 native_window,
594 registerForDraggedTypes:
595 NSArray::arrayWithObject(nil, NSFilenamesPboardType)
596 ];
597 let () = msg_send![
598 native_window,
599 setReleasedWhenClosed: NO
600 ];
601
602 let native_view: id = msg_send![VIEW_CLASS, alloc];
603 let native_view = NSView::init(native_view);
604 assert!(!native_view.is_null());
605
606 let mut window = Self(Arc::new(Mutex::new(MacWindowState {
607 handle,
608 executor,
609 native_window,
610 native_view: NonNull::new_unchecked(native_view),
611 display_link: None,
612 renderer: renderer::new_renderer(
613 renderer_context,
614 native_window as *mut _,
615 native_view as *mut _,
616 bounds.size.map(|pixels| pixels.0),
617 false,
618 ),
619 request_frame_callback: None,
620 event_callback: None,
621 activate_callback: None,
622 resize_callback: None,
623 moved_callback: None,
624 should_close_callback: None,
625 close_callback: None,
626 appearance_changed_callback: None,
627 input_handler: None,
628 last_key_equivalent: None,
629 synthetic_drag_counter: 0,
630 traffic_light_position: titlebar
631 .as_ref()
632 .and_then(|titlebar| titlebar.traffic_light_position),
633 transparent_titlebar: titlebar
634 .as_ref()
635 .map_or(true, |titlebar| titlebar.appears_transparent),
636 previous_modifiers_changed_event: None,
637 keystroke_for_do_command: None,
638 do_command_handled: None,
639 external_files_dragged: false,
640 first_mouse: false,
641 fullscreen_restore_bounds: Bounds::default(),
642 })));
643
644 (*native_window).set_ivar(
645 WINDOW_STATE_IVAR,
646 Arc::into_raw(window.0.clone()) as *const c_void,
647 );
648 native_window.setDelegate_(native_window);
649 (*native_view).set_ivar(
650 WINDOW_STATE_IVAR,
651 Arc::into_raw(window.0.clone()) as *const c_void,
652 );
653
654 if let Some(title) = titlebar
655 .as_ref()
656 .and_then(|t| t.title.as_ref().map(AsRef::as_ref))
657 {
658 window.set_title(title);
659 }
660
661 native_window.setMovable_(is_movable as BOOL);
662
663 if let Some(window_min_size) = window_min_size {
664 native_window.setContentMinSize_(NSSize {
665 width: window_min_size.width.to_f64(),
666 height: window_min_size.height.to_f64(),
667 });
668 }
669
670 if titlebar.map_or(true, |titlebar| titlebar.appears_transparent) {
671 native_window.setTitlebarAppearsTransparent_(YES);
672 native_window.setTitleVisibility_(NSWindowTitleVisibility::NSWindowTitleHidden);
673 }
674
675 native_view.setAutoresizingMask_(NSViewWidthSizable | NSViewHeightSizable);
676 native_view.setWantsBestResolutionOpenGLSurface_(YES);
677
678 // From winit crate: On Mojave, views automatically become layer-backed shortly after
679 // being added to a native_window. Changing the layer-backedness of a view breaks the
680 // association between the view and its associated OpenGL context. To work around this,
681 // on we explicitly make the view layer-backed up front so that AppKit doesn't do it
682 // itself and break the association with its context.
683 native_view.setWantsLayer(YES);
684 let _: () = msg_send![
685 native_view,
686 setLayerContentsRedrawPolicy: NSViewLayerContentsRedrawDuringViewResize
687 ];
688
689 native_window.setContentView_(native_view.autorelease());
690 native_window.makeFirstResponder_(native_view);
691
692 match kind {
693 WindowKind::Normal => {
694 native_window.setLevel_(NSNormalWindowLevel);
695 native_window.setAcceptsMouseMovedEvents_(YES);
696 }
697 WindowKind::PopUp => {
698 // Use a tracking area to allow receiving MouseMoved events even when
699 // the window or application aren't active, which is often the case
700 // e.g. for notification windows.
701 let tracking_area: id = msg_send![class!(NSTrackingArea), alloc];
702 let _: () = msg_send![
703 tracking_area,
704 initWithRect: NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.))
705 options: NSTrackingMouseEnteredAndExited | NSTrackingMouseMoved | NSTrackingActiveAlways | NSTrackingInVisibleRect
706 owner: native_view
707 userInfo: nil
708 ];
709 let _: () =
710 msg_send![native_view, addTrackingArea: tracking_area.autorelease()];
711
712 native_window.setLevel_(NSPopUpWindowLevel);
713 let _: () = msg_send![
714 native_window,
715 setAnimationBehavior: NSWindowAnimationBehaviorUtilityWindow
716 ];
717 native_window.setCollectionBehavior_(
718 NSWindowCollectionBehavior::NSWindowCollectionBehaviorCanJoinAllSpaces |
719 NSWindowCollectionBehavior::NSWindowCollectionBehaviorFullScreenAuxiliary
720 );
721 }
722 }
723
724 if focus && show {
725 native_window.makeKeyAndOrderFront_(nil);
726 } else if show {
727 native_window.orderFront_(nil);
728 }
729
730 // Set the initial position of the window to the specified origin.
731 // Although we already specified the position using `initWithContentRect_styleMask_backing_defer_screen_`,
732 // the window position might be incorrect if the main screen (the screen that contains the window that has focus)
733 // is different from the primary screen.
734 NSWindow::setFrameTopLeftPoint_(native_window, window_rect.origin);
735 window.0.lock().move_traffic_light();
736
737 pool.drain();
738
739 window
740 }
741 }
742
743 pub fn active_window() -> Option<AnyWindowHandle> {
744 unsafe {
745 let app = NSApplication::sharedApplication(nil);
746 let main_window: id = msg_send![app, mainWindow];
747 if main_window.is_null() {
748 return None;
749 }
750
751 if msg_send![main_window, isKindOfClass: WINDOW_CLASS] {
752 let handle = get_window_state(&*main_window).lock().handle;
753 Some(handle)
754 } else {
755 None
756 }
757 }
758 }
759
760 pub fn ordered_windows() -> Vec<AnyWindowHandle> {
761 unsafe {
762 let app = NSApplication::sharedApplication(nil);
763 let windows: id = msg_send![app, orderedWindows];
764 let count: NSUInteger = msg_send![windows, count];
765
766 let mut window_handles = Vec::new();
767 for i in 0..count {
768 let window: id = msg_send![windows, objectAtIndex:i];
769 if msg_send![window, isKindOfClass: WINDOW_CLASS] {
770 let handle = get_window_state(&*window).lock().handle;
771 window_handles.push(handle);
772 }
773 }
774
775 window_handles
776 }
777 }
778}
779
780impl Drop for MacWindow {
781 fn drop(&mut self) {
782 let mut this = self.0.lock();
783 this.renderer.destroy();
784 let window = this.native_window;
785 this.display_link.take();
786 unsafe {
787 this.native_window.setDelegate_(nil);
788 }
789 this.input_handler.take();
790 this.executor
791 .spawn(async move {
792 unsafe {
793 window.close();
794 window.autorelease();
795 }
796 })
797 .detach();
798 }
799}
800
801impl PlatformWindow for MacWindow {
802 fn bounds(&self) -> Bounds<Pixels> {
803 self.0.as_ref().lock().bounds()
804 }
805
806 fn window_bounds(&self) -> WindowBounds {
807 self.0.as_ref().lock().window_bounds()
808 }
809
810 fn is_maximized(&self) -> bool {
811 self.0.as_ref().lock().is_maximized()
812 }
813
814 fn content_size(&self) -> Size<Pixels> {
815 self.0.as_ref().lock().content_size()
816 }
817
818 fn resize(&mut self, size: Size<Pixels>) {
819 let this = self.0.lock();
820 let window = this.native_window;
821 this.executor
822 .spawn(async move {
823 unsafe {
824 window.setContentSize_(NSSize {
825 width: size.width.0 as f64,
826 height: size.height.0 as f64,
827 });
828 }
829 })
830 .detach();
831 }
832
833 fn scale_factor(&self) -> f32 {
834 self.0.as_ref().lock().scale_factor()
835 }
836
837 fn appearance(&self) -> WindowAppearance {
838 unsafe {
839 let appearance: id = msg_send![self.0.lock().native_window, effectiveAppearance];
840 WindowAppearance::from_native(appearance)
841 }
842 }
843
844 fn display(&self) -> Option<Rc<dyn PlatformDisplay>> {
845 unsafe {
846 let screen = self.0.lock().native_window.screen();
847 if screen.is_null() {
848 return None;
849 }
850 let device_description: id = msg_send![screen, deviceDescription];
851 let screen_number: id = NSDictionary::valueForKey_(
852 device_description,
853 NSString::alloc(nil).init_str("NSScreenNumber"),
854 );
855
856 let screen_number: u32 = msg_send![screen_number, unsignedIntValue];
857
858 Some(Rc::new(MacDisplay(screen_number)))
859 }
860 }
861
862 fn mouse_position(&self) -> Point<Pixels> {
863 let position = unsafe {
864 self.0
865 .lock()
866 .native_window
867 .mouseLocationOutsideOfEventStream()
868 };
869 convert_mouse_position(position, self.content_size().height)
870 }
871
872 fn modifiers(&self) -> Modifiers {
873 unsafe {
874 let modifiers: NSEventModifierFlags = msg_send![class!(NSEvent), modifierFlags];
875
876 let control = modifiers.contains(NSEventModifierFlags::NSControlKeyMask);
877 let alt = modifiers.contains(NSEventModifierFlags::NSAlternateKeyMask);
878 let shift = modifiers.contains(NSEventModifierFlags::NSShiftKeyMask);
879 let command = modifiers.contains(NSEventModifierFlags::NSCommandKeyMask);
880 let function = modifiers.contains(NSEventModifierFlags::NSFunctionKeyMask);
881
882 Modifiers {
883 control,
884 alt,
885 shift,
886 platform: command,
887 function,
888 }
889 }
890 }
891
892 fn set_input_handler(&mut self, input_handler: PlatformInputHandler) {
893 self.0.as_ref().lock().input_handler = Some(input_handler);
894 }
895
896 fn take_input_handler(&mut self) -> Option<PlatformInputHandler> {
897 self.0.as_ref().lock().input_handler.take()
898 }
899
900 fn prompt(
901 &self,
902 level: PromptLevel,
903 msg: &str,
904 detail: Option<&str>,
905 answers: &[PromptButton],
906 ) -> Option<oneshot::Receiver<usize>> {
907 // macOs applies overrides to modal window buttons after they are added.
908 // Two most important for this logic are:
909 // * Buttons with "Cancel" title will be displayed as the last buttons in the modal
910 // * Last button added to the modal via `addButtonWithTitle` stays focused
911 // * Focused buttons react on "space"/" " keypresses
912 // * Usage of `keyEquivalent`, `makeFirstResponder` or `setInitialFirstResponder` does not change the focus
913 //
914 // See also https://developer.apple.com/documentation/appkit/nsalert/1524532-addbuttonwithtitle#discussion
915 // ```
916 // By default, the first button has a key equivalent of Return,
917 // any button with a title of “Cancel” has a key equivalent of Escape,
918 // and any button with the title “Don’t Save” has a key equivalent of Command-D (but only if it’s not the first button).
919 // ```
920 //
921 // To avoid situations when the last element added is "Cancel" and it gets the focus
922 // (hence stealing both ESC and Space shortcuts), we find and add one non-Cancel button
923 // last, so it gets focus and a Space shortcut.
924 // This way, "Save this file? Yes/No/Cancel"-ish modals will get all three buttons mapped with a key.
925 let latest_non_cancel_label = answers
926 .iter()
927 .enumerate()
928 .rev()
929 .find(|(_, label)| !label.is_cancel())
930 .filter(|&(label_index, _)| label_index > 0);
931
932 unsafe {
933 let alert: id = msg_send![class!(NSAlert), alloc];
934 let alert: id = msg_send![alert, init];
935 let alert_style = match level {
936 PromptLevel::Info => 1,
937 PromptLevel::Warning => 0,
938 PromptLevel::Critical => 2,
939 };
940 let _: () = msg_send![alert, setAlertStyle: alert_style];
941 let _: () = msg_send![alert, setMessageText: ns_string(msg)];
942 if let Some(detail) = detail {
943 let _: () = msg_send![alert, setInformativeText: ns_string(detail)];
944 }
945
946 for (ix, answer) in answers
947 .iter()
948 .enumerate()
949 .filter(|&(ix, _)| Some(ix) != latest_non_cancel_label.map(|(ix, _)| ix))
950 {
951 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer.label())];
952 let _: () = msg_send![button, setTag: ix as NSInteger];
953
954 if answer.is_cancel() {
955 // Bind Escape Key to Cancel Button
956 if let Some(key) = std::char::from_u32(super::events::ESCAPE_KEY as u32) {
957 let _: () =
958 msg_send![button, setKeyEquivalent: ns_string(&key.to_string())];
959 }
960 }
961 }
962 if let Some((ix, answer)) = latest_non_cancel_label {
963 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer.label())];
964 let _: () = msg_send![button, setTag: ix as NSInteger];
965 }
966
967 let (done_tx, done_rx) = oneshot::channel();
968 let done_tx = Cell::new(Some(done_tx));
969 let block = ConcreteBlock::new(move |answer: NSInteger| {
970 if let Some(done_tx) = done_tx.take() {
971 let _ = done_tx.send(answer.try_into().unwrap());
972 }
973 });
974 let block = block.copy();
975 let native_window = self.0.lock().native_window;
976 let executor = self.0.lock().executor.clone();
977 executor
978 .spawn(async move {
979 let _: () = msg_send![
980 alert,
981 beginSheetModalForWindow: native_window
982 completionHandler: block
983 ];
984 })
985 .detach();
986
987 Some(done_rx)
988 }
989 }
990
991 fn activate(&self) {
992 let window = self.0.lock().native_window;
993 let executor = self.0.lock().executor.clone();
994 executor
995 .spawn(async move {
996 unsafe {
997 let _: () = msg_send![window, makeKeyAndOrderFront: nil];
998 }
999 })
1000 .detach();
1001 }
1002
1003 fn is_active(&self) -> bool {
1004 unsafe { self.0.lock().native_window.isKeyWindow() == YES }
1005 }
1006
1007 // is_hovered is unused on macOS. See Window::is_window_hovered.
1008 fn is_hovered(&self) -> bool {
1009 false
1010 }
1011
1012 fn set_title(&mut self, title: &str) {
1013 unsafe {
1014 let app = NSApplication::sharedApplication(nil);
1015 let window = self.0.lock().native_window;
1016 let title = ns_string(title);
1017 let _: () = msg_send![app, changeWindowsItem:window title:title filename:false];
1018 let _: () = msg_send![window, setTitle: title];
1019 self.0.lock().move_traffic_light();
1020 }
1021 }
1022
1023 fn set_app_id(&mut self, _app_id: &str) {}
1024
1025 fn set_background_appearance(&self, background_appearance: WindowBackgroundAppearance) {
1026 let mut this = self.0.as_ref().lock();
1027 this.renderer
1028 .update_transparency(background_appearance != WindowBackgroundAppearance::Opaque);
1029
1030 let blur_radius = if background_appearance == WindowBackgroundAppearance::Blurred {
1031 80
1032 } else {
1033 0
1034 };
1035 let opaque = (background_appearance == WindowBackgroundAppearance::Opaque).to_objc();
1036
1037 unsafe {
1038 this.native_window.setOpaque_(opaque);
1039 // Shadows for transparent windows cause artifacts and performance issues
1040 this.native_window.setHasShadow_(opaque);
1041 let clear_color = if opaque == YES {
1042 NSColor::colorWithSRGBRed_green_blue_alpha_(nil, 0f64, 0f64, 0f64, 1f64)
1043 } else {
1044 NSColor::clearColor(nil)
1045 };
1046 this.native_window.setBackgroundColor_(clear_color);
1047 let window_number = this.native_window.windowNumber();
1048 CGSSetWindowBackgroundBlurRadius(CGSMainConnectionID(), window_number, blur_radius);
1049 }
1050 }
1051
1052 fn set_edited(&mut self, edited: bool) {
1053 unsafe {
1054 let window = self.0.lock().native_window;
1055 msg_send![window, setDocumentEdited: edited as BOOL]
1056 }
1057
1058 // Changing the document edited state resets the traffic light position,
1059 // so we have to move it again.
1060 self.0.lock().move_traffic_light();
1061 }
1062
1063 fn show_character_palette(&self) {
1064 let this = self.0.lock();
1065 let window = this.native_window;
1066 this.executor
1067 .spawn(async move {
1068 unsafe {
1069 let app = NSApplication::sharedApplication(nil);
1070 let _: () = msg_send![app, orderFrontCharacterPalette: window];
1071 }
1072 })
1073 .detach();
1074 }
1075
1076 fn minimize(&self) {
1077 let window = self.0.lock().native_window;
1078 unsafe {
1079 window.miniaturize_(nil);
1080 }
1081 }
1082
1083 fn zoom(&self) {
1084 let this = self.0.lock();
1085 let window = this.native_window;
1086 this.executor
1087 .spawn(async move {
1088 unsafe {
1089 window.zoom_(nil);
1090 }
1091 })
1092 .detach();
1093 }
1094
1095 fn toggle_fullscreen(&self) {
1096 let this = self.0.lock();
1097 let window = this.native_window;
1098 this.executor
1099 .spawn(async move {
1100 unsafe {
1101 window.toggleFullScreen_(nil);
1102 }
1103 })
1104 .detach();
1105 }
1106
1107 fn is_fullscreen(&self) -> bool {
1108 let this = self.0.lock();
1109 let window = this.native_window;
1110
1111 unsafe {
1112 window
1113 .styleMask()
1114 .contains(NSWindowStyleMask::NSFullScreenWindowMask)
1115 }
1116 }
1117
1118 fn on_request_frame(&self, callback: Box<dyn FnMut(RequestFrameOptions)>) {
1119 self.0.as_ref().lock().request_frame_callback = Some(callback);
1120 }
1121
1122 fn on_input(&self, callback: Box<dyn FnMut(PlatformInput) -> crate::DispatchEventResult>) {
1123 self.0.as_ref().lock().event_callback = Some(callback);
1124 }
1125
1126 fn on_active_status_change(&self, callback: Box<dyn FnMut(bool)>) {
1127 self.0.as_ref().lock().activate_callback = Some(callback);
1128 }
1129
1130 fn on_hover_status_change(&self, _: Box<dyn FnMut(bool)>) {}
1131
1132 fn on_resize(&self, callback: Box<dyn FnMut(Size<Pixels>, f32)>) {
1133 self.0.as_ref().lock().resize_callback = Some(callback);
1134 }
1135
1136 fn on_moved(&self, callback: Box<dyn FnMut()>) {
1137 self.0.as_ref().lock().moved_callback = Some(callback);
1138 }
1139
1140 fn on_should_close(&self, callback: Box<dyn FnMut() -> bool>) {
1141 self.0.as_ref().lock().should_close_callback = Some(callback);
1142 }
1143
1144 fn on_close(&self, callback: Box<dyn FnOnce()>) {
1145 self.0.as_ref().lock().close_callback = Some(callback);
1146 }
1147
1148 fn on_appearance_changed(&self, callback: Box<dyn FnMut()>) {
1149 self.0.lock().appearance_changed_callback = Some(callback);
1150 }
1151
1152 fn draw(&self, scene: &crate::Scene) {
1153 let mut this = self.0.lock();
1154 this.renderer.draw(scene);
1155 }
1156
1157 fn sprite_atlas(&self) -> Arc<dyn PlatformAtlas> {
1158 self.0.lock().renderer.sprite_atlas().clone()
1159 }
1160
1161 fn gpu_specs(&self) -> Option<crate::GpuSpecs> {
1162 None
1163 }
1164
1165 fn update_ime_position(&self, _bounds: Bounds<ScaledPixels>) {
1166 let executor = self.0.lock().executor.clone();
1167 executor
1168 .spawn(async move {
1169 unsafe {
1170 let input_context: id =
1171 msg_send![class!(NSTextInputContext), currentInputContext];
1172 if input_context.is_null() {
1173 return;
1174 }
1175 let _: () = msg_send![input_context, invalidateCharacterCoordinates];
1176 }
1177 })
1178 .detach()
1179 }
1180}
1181
1182impl rwh::HasWindowHandle for MacWindow {
1183 fn window_handle(&self) -> Result<rwh::WindowHandle<'_>, rwh::HandleError> {
1184 // SAFETY: The AppKitWindowHandle is a wrapper around a pointer to an NSView
1185 unsafe {
1186 Ok(rwh::WindowHandle::borrow_raw(rwh::RawWindowHandle::AppKit(
1187 rwh::AppKitWindowHandle::new(self.0.lock().native_view.cast()),
1188 )))
1189 }
1190 }
1191}
1192
1193impl rwh::HasDisplayHandle for MacWindow {
1194 fn display_handle(&self) -> Result<rwh::DisplayHandle<'_>, rwh::HandleError> {
1195 // SAFETY: This is a no-op on macOS
1196 unsafe {
1197 Ok(rwh::DisplayHandle::borrow_raw(
1198 rwh::AppKitDisplayHandle::new().into(),
1199 ))
1200 }
1201 }
1202}
1203
1204fn get_scale_factor(native_window: id) -> f32 {
1205 let factor = unsafe {
1206 let screen: id = msg_send![native_window, screen];
1207 if screen.is_null() {
1208 return 1.0;
1209 }
1210 NSScreen::backingScaleFactor(screen) as f32
1211 };
1212
1213 // We are not certain what triggers this, but it seems that sometimes
1214 // this method would return 0 (https://github.com/zed-industries/zed/issues/6412)
1215 // It seems most likely that this would happen if the window has no screen
1216 // (if it is off-screen), though we'd expect to see viewDidChangeBackingProperties before
1217 // it was rendered for real.
1218 // Regardless, attempt to avoid the issue here.
1219 if factor == 0.0 { 2. } else { factor }
1220}
1221
1222unsafe fn get_window_state(object: &Object) -> Arc<Mutex<MacWindowState>> {
1223 unsafe {
1224 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1225 let rc1 = Arc::from_raw(raw as *mut Mutex<MacWindowState>);
1226 let rc2 = rc1.clone();
1227 mem::forget(rc1);
1228 rc2
1229 }
1230}
1231
1232unsafe fn drop_window_state(object: &Object) {
1233 unsafe {
1234 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1235 Arc::from_raw(raw as *mut Mutex<MacWindowState>);
1236 }
1237}
1238
1239extern "C" fn yes(_: &Object, _: Sel) -> BOOL {
1240 YES
1241}
1242
1243extern "C" fn dealloc_window(this: &Object, _: Sel) {
1244 unsafe {
1245 drop_window_state(this);
1246 let _: () = msg_send![super(this, class!(NSWindow)), dealloc];
1247 }
1248}
1249
1250extern "C" fn dealloc_view(this: &Object, _: Sel) {
1251 unsafe {
1252 drop_window_state(this);
1253 let _: () = msg_send![super(this, class!(NSView)), dealloc];
1254 }
1255}
1256
1257extern "C" fn handle_key_equivalent(this: &Object, _: Sel, native_event: id) -> BOOL {
1258 handle_key_event(this, native_event, true)
1259}
1260
1261extern "C" fn handle_key_down(this: &Object, _: Sel, native_event: id) {
1262 handle_key_event(this, native_event, false);
1263}
1264
1265extern "C" fn handle_key_up(this: &Object, _: Sel, native_event: id) {
1266 handle_key_event(this, native_event, false);
1267}
1268
1269// Things to test if you're modifying this method:
1270// U.S. layout:
1271// - The IME consumes characters like 'j' and 'k', which makes paging through `less` in
1272// the terminal behave incorrectly by default. This behavior should be patched by our
1273// IME integration
1274// - `alt-t` should open the tasks menu
1275// - In vim mode, this keybinding should work:
1276// ```
1277// {
1278// "context": "Editor && vim_mode == insert",
1279// "bindings": {"j j": "vim::NormalBefore"}
1280// }
1281// ```
1282// and typing 'j k' in insert mode with this keybinding should insert the two characters
1283// Brazilian layout:
1284// - `" space` should create an unmarked quote
1285// - `" backspace` should delete the marked quote
1286// - `" "`should create an unmarked quote and a second marked quote
1287// - `" up` should insert a quote, unmark it, and move up one line
1288// - `" cmd-down` should insert a quote, unmark it, and move to the end of the file
1289// - `cmd-ctrl-space` and clicking on an emoji should type it
1290// Czech (QWERTY) layout:
1291// - in vim mode `option-4` should go to end of line (same as $)
1292// Japanese (Romaji) layout:
1293// - type `a i left down up enter enter` should create an unmarked text "愛"
1294extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent: bool) -> BOOL {
1295 let window_state = unsafe { get_window_state(this) };
1296 let mut lock = window_state.as_ref().lock();
1297
1298 let window_height = lock.content_size().height;
1299 let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) };
1300
1301 let Some(event) = event else {
1302 return NO;
1303 };
1304
1305 let run_callback = |event: PlatformInput| -> BOOL {
1306 let mut callback = window_state.as_ref().lock().event_callback.take();
1307 let handled: BOOL = if let Some(callback) = callback.as_mut() {
1308 !callback(event).propagate as BOOL
1309 } else {
1310 NO
1311 };
1312 window_state.as_ref().lock().event_callback = callback;
1313 handled
1314 };
1315
1316 match event {
1317 PlatformInput::KeyDown(mut key_down_event) => {
1318 // For certain keystrokes, macOS will first dispatch a "key equivalent" event.
1319 // If that event isn't handled, it will then dispatch a "key down" event. GPUI
1320 // makes no distinction between these two types of events, so we need to ignore
1321 // the "key down" event if we've already just processed its "key equivalent" version.
1322 if key_equivalent {
1323 lock.last_key_equivalent = Some(key_down_event.clone());
1324 } else if lock.last_key_equivalent.take().as_ref() == Some(&key_down_event) {
1325 return NO;
1326 }
1327
1328 drop(lock);
1329
1330 let is_composing =
1331 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1332 .flatten()
1333 .is_some();
1334
1335 // If we're composing, send the key to the input handler first;
1336 // otherwise we only send to the input handler if we don't have a matching binding.
1337 // The input handler may call `do_command_by_selector` if it doesn't know how to handle
1338 // a key. If it does so, it will return YES so we won't send the key twice.
1339 // We also do this for non-printing keys (like arrow keys and escape) as the IME menu
1340 // may need them even if there is no marked text;
1341 // however we skip keys with control or the input handler adds control-characters to the buffer.
1342 // and keys with function, as the input handler swallows them.
1343 if is_composing
1344 || (key_down_event.keystroke.key_char.is_none()
1345 && !key_down_event.keystroke.modifiers.control
1346 && !key_down_event.keystroke.modifiers.function)
1347 {
1348 {
1349 let mut lock = window_state.as_ref().lock();
1350 lock.keystroke_for_do_command = Some(key_down_event.keystroke.clone());
1351 lock.do_command_handled.take();
1352 drop(lock);
1353 }
1354
1355 let handled: BOOL = unsafe {
1356 let input_context: id = msg_send![this, inputContext];
1357 msg_send![input_context, handleEvent: native_event]
1358 };
1359 window_state.as_ref().lock().keystroke_for_do_command.take();
1360 if let Some(handled) = window_state.as_ref().lock().do_command_handled.take() {
1361 return handled as BOOL;
1362 } else if handled == YES {
1363 return YES;
1364 }
1365
1366 let handled = run_callback(PlatformInput::KeyDown(key_down_event));
1367 return handled;
1368 }
1369
1370 let handled = run_callback(PlatformInput::KeyDown(key_down_event.clone()));
1371 if handled == YES {
1372 return YES;
1373 }
1374
1375 if key_down_event.is_held {
1376 if let Some(key_char) = key_down_event.keystroke.key_char.as_ref() {
1377 let handled = with_input_handler(&this, |input_handler| {
1378 if !input_handler.apple_press_and_hold_enabled() {
1379 input_handler.replace_text_in_range(None, &key_char);
1380 return YES;
1381 }
1382 NO
1383 });
1384 if handled == Some(YES) {
1385 return YES;
1386 }
1387 }
1388 }
1389
1390 // Don't send key equivalents to the input handler,
1391 // or macOS shortcuts like cmd-` will stop working.
1392 if key_equivalent {
1393 return NO;
1394 }
1395
1396 unsafe {
1397 let input_context: id = msg_send![this, inputContext];
1398 msg_send![input_context, handleEvent: native_event]
1399 }
1400 }
1401
1402 PlatformInput::KeyUp(_) => {
1403 drop(lock);
1404 run_callback(event)
1405 }
1406
1407 _ => NO,
1408 }
1409}
1410
1411extern "C" fn handle_view_event(this: &Object, _: Sel, native_event: id) {
1412 let window_state = unsafe { get_window_state(this) };
1413 let weak_window_state = Arc::downgrade(&window_state);
1414 let mut lock = window_state.as_ref().lock();
1415 let window_height = lock.content_size().height;
1416 let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) };
1417
1418 if let Some(mut event) = event {
1419 match &mut event {
1420 PlatformInput::MouseDown(
1421 event @ MouseDownEvent {
1422 button: MouseButton::Left,
1423 modifiers: Modifiers { control: true, .. },
1424 ..
1425 },
1426 ) => {
1427 // On mac, a ctrl-left click should be handled as a right click.
1428 *event = MouseDownEvent {
1429 button: MouseButton::Right,
1430 modifiers: Modifiers {
1431 control: false,
1432 ..event.modifiers
1433 },
1434 click_count: 1,
1435 ..*event
1436 };
1437 }
1438
1439 // Handles focusing click.
1440 PlatformInput::MouseDown(
1441 event @ MouseDownEvent {
1442 button: MouseButton::Left,
1443 ..
1444 },
1445 ) if (lock.first_mouse) => {
1446 *event = MouseDownEvent {
1447 first_mouse: true,
1448 ..*event
1449 };
1450 lock.first_mouse = false;
1451 }
1452
1453 // Because we map a ctrl-left_down to a right_down -> right_up let's ignore
1454 // the ctrl-left_up to avoid having a mismatch in button down/up events if the
1455 // user is still holding ctrl when releasing the left mouse button
1456 PlatformInput::MouseUp(
1457 event @ MouseUpEvent {
1458 button: MouseButton::Left,
1459 modifiers: Modifiers { control: true, .. },
1460 ..
1461 },
1462 ) => {
1463 *event = MouseUpEvent {
1464 button: MouseButton::Right,
1465 modifiers: Modifiers {
1466 control: false,
1467 ..event.modifiers
1468 },
1469 click_count: 1,
1470 ..*event
1471 };
1472 }
1473
1474 _ => {}
1475 };
1476
1477 match &event {
1478 PlatformInput::MouseDown(_) => {
1479 drop(lock);
1480 unsafe {
1481 let input_context: id = msg_send![this, inputContext];
1482 msg_send![input_context, handleEvent: native_event]
1483 }
1484 lock = window_state.as_ref().lock();
1485 }
1486 PlatformInput::MouseMove(
1487 event @ MouseMoveEvent {
1488 pressed_button: Some(_),
1489 ..
1490 },
1491 ) => {
1492 // Synthetic drag is used for selecting long buffer contents while buffer is being scrolled.
1493 // External file drag and drop is able to emit its own synthetic mouse events which will conflict
1494 // with these ones.
1495 if !lock.external_files_dragged {
1496 lock.synthetic_drag_counter += 1;
1497 let executor = lock.executor.clone();
1498 executor
1499 .spawn(synthetic_drag(
1500 weak_window_state,
1501 lock.synthetic_drag_counter,
1502 event.clone(),
1503 ))
1504 .detach();
1505 }
1506 }
1507
1508 PlatformInput::MouseUp(MouseUpEvent { .. }) => {
1509 lock.synthetic_drag_counter += 1;
1510 }
1511
1512 PlatformInput::ModifiersChanged(ModifiersChangedEvent { modifiers }) => {
1513 // Only raise modifiers changed event when they have actually changed
1514 if let Some(PlatformInput::ModifiersChanged(ModifiersChangedEvent {
1515 modifiers: prev_modifiers,
1516 })) = &lock.previous_modifiers_changed_event
1517 {
1518 if prev_modifiers == modifiers {
1519 return;
1520 }
1521 }
1522
1523 lock.previous_modifiers_changed_event = Some(event.clone());
1524 }
1525
1526 _ => {}
1527 }
1528
1529 if let Some(mut callback) = lock.event_callback.take() {
1530 drop(lock);
1531 callback(event);
1532 window_state.lock().event_callback = Some(callback);
1533 }
1534 }
1535}
1536
1537extern "C" fn window_did_change_occlusion_state(this: &Object, _: Sel, _: id) {
1538 let window_state = unsafe { get_window_state(this) };
1539 let lock = &mut *window_state.lock();
1540 unsafe {
1541 if lock
1542 .native_window
1543 .occlusionState()
1544 .contains(NSWindowOcclusionState::NSWindowOcclusionStateVisible)
1545 {
1546 lock.start_display_link();
1547 } else {
1548 lock.stop_display_link();
1549 }
1550 }
1551}
1552
1553extern "C" fn window_did_resize(this: &Object, _: Sel, _: id) {
1554 let window_state = unsafe { get_window_state(this) };
1555 window_state.as_ref().lock().move_traffic_light();
1556}
1557
1558extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) {
1559 let window_state = unsafe { get_window_state(this) };
1560 let mut lock = window_state.as_ref().lock();
1561 lock.fullscreen_restore_bounds = lock.bounds();
1562
1563 let min_version = NSOperatingSystemVersion::new(15, 3, 0);
1564
1565 if is_macos_version_at_least(min_version) {
1566 unsafe {
1567 lock.native_window.setTitlebarAppearsTransparent_(NO);
1568 }
1569 }
1570}
1571
1572extern "C" fn window_will_exit_fullscreen(this: &Object, _: Sel, _: id) {
1573 let window_state = unsafe { get_window_state(this) };
1574 let mut lock = window_state.as_ref().lock();
1575
1576 let min_version = NSOperatingSystemVersion::new(15, 3, 0);
1577
1578 if is_macos_version_at_least(min_version) && lock.transparent_titlebar {
1579 unsafe {
1580 lock.native_window.setTitlebarAppearsTransparent_(YES);
1581 }
1582 }
1583}
1584
1585pub(crate) fn is_macos_version_at_least(version: NSOperatingSystemVersion) -> bool {
1586 unsafe { NSProcessInfo::processInfo(nil).isOperatingSystemAtLeastVersion(version) }
1587}
1588
1589extern "C" fn window_did_move(this: &Object, _: Sel, _: id) {
1590 let window_state = unsafe { get_window_state(this) };
1591 let mut lock = window_state.as_ref().lock();
1592 if let Some(mut callback) = lock.moved_callback.take() {
1593 drop(lock);
1594 callback();
1595 window_state.lock().moved_callback = Some(callback);
1596 }
1597}
1598
1599extern "C" fn window_did_change_screen(this: &Object, _: Sel, _: id) {
1600 let window_state = unsafe { get_window_state(this) };
1601 let mut lock = window_state.as_ref().lock();
1602 lock.start_display_link();
1603}
1604
1605extern "C" fn window_did_change_key_status(this: &Object, selector: Sel, _: id) {
1606 let window_state = unsafe { get_window_state(this) };
1607 let lock = window_state.lock();
1608 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1609
1610 // When opening a pop-up while the application isn't active, Cocoa sends a spurious
1611 // `windowDidBecomeKey` message to the previous key window even though that window
1612 // isn't actually key. This causes a bug if the application is later activated while
1613 // the pop-up is still open, making it impossible to activate the previous key window
1614 // even if the pop-up gets closed. The only way to activate it again is to de-activate
1615 // the app and re-activate it, which is a pretty bad UX.
1616 // The following code detects the spurious event and invokes `resignKeyWindow`:
1617 // in theory, we're not supposed to invoke this method manually but it balances out
1618 // the spurious `becomeKeyWindow` event and helps us work around that bug.
1619 if selector == sel!(windowDidBecomeKey:) && !is_active {
1620 unsafe {
1621 let _: () = msg_send![lock.native_window, resignKeyWindow];
1622 return;
1623 }
1624 }
1625
1626 let executor = lock.executor.clone();
1627 drop(lock);
1628 executor
1629 .spawn(async move {
1630 let mut lock = window_state.as_ref().lock();
1631 if let Some(mut callback) = lock.activate_callback.take() {
1632 drop(lock);
1633 callback(is_active);
1634 window_state.lock().activate_callback = Some(callback);
1635 };
1636 })
1637 .detach();
1638}
1639
1640extern "C" fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
1641 let window_state = unsafe { get_window_state(this) };
1642 let mut lock = window_state.as_ref().lock();
1643 if let Some(mut callback) = lock.should_close_callback.take() {
1644 drop(lock);
1645 let should_close = callback();
1646 window_state.lock().should_close_callback = Some(callback);
1647 should_close as BOOL
1648 } else {
1649 YES
1650 }
1651}
1652
1653extern "C" fn close_window(this: &Object, _: Sel) {
1654 unsafe {
1655 let close_callback = {
1656 let window_state = get_window_state(this);
1657 let mut lock = window_state.as_ref().lock();
1658 lock.close_callback.take()
1659 };
1660
1661 if let Some(callback) = close_callback {
1662 callback();
1663 }
1664
1665 let _: () = msg_send![super(this, class!(NSWindow)), close];
1666 }
1667}
1668
1669extern "C" fn make_backing_layer(this: &Object, _: Sel) -> id {
1670 let window_state = unsafe { get_window_state(this) };
1671 let window_state = window_state.as_ref().lock();
1672 window_state.renderer.layer_ptr() as id
1673}
1674
1675extern "C" fn view_did_change_backing_properties(this: &Object, _: Sel) {
1676 let window_state = unsafe { get_window_state(this) };
1677 let mut lock = window_state.as_ref().lock();
1678
1679 let scale_factor = lock.scale_factor();
1680 let size = lock.content_size();
1681 let drawable_size = size.to_device_pixels(scale_factor);
1682 unsafe {
1683 let _: () = msg_send![
1684 lock.renderer.layer(),
1685 setContentsScale: scale_factor as f64
1686 ];
1687 }
1688
1689 lock.renderer.update_drawable_size(drawable_size);
1690
1691 if let Some(mut callback) = lock.resize_callback.take() {
1692 let content_size = lock.content_size();
1693 let scale_factor = lock.scale_factor();
1694 drop(lock);
1695 callback(content_size, scale_factor);
1696 window_state.as_ref().lock().resize_callback = Some(callback);
1697 };
1698}
1699
1700extern "C" fn set_frame_size(this: &Object, _: Sel, size: NSSize) {
1701 let window_state = unsafe { get_window_state(this) };
1702 let mut lock = window_state.as_ref().lock();
1703
1704 let new_size = Size::<Pixels>::from(size);
1705 if lock.content_size() == new_size {
1706 return;
1707 }
1708
1709 unsafe {
1710 let _: () = msg_send![super(this, class!(NSView)), setFrameSize: size];
1711 }
1712
1713 let scale_factor = lock.scale_factor();
1714 let drawable_size = new_size.to_device_pixels(scale_factor);
1715 lock.renderer.update_drawable_size(drawable_size);
1716
1717 if let Some(mut callback) = lock.resize_callback.take() {
1718 let content_size = lock.content_size();
1719 let scale_factor = lock.scale_factor();
1720 drop(lock);
1721 callback(content_size, scale_factor);
1722 window_state.lock().resize_callback = Some(callback);
1723 };
1724}
1725
1726extern "C" fn display_layer(this: &Object, _: Sel, _: id) {
1727 let window_state = unsafe { get_window_state(this) };
1728 let mut lock = window_state.lock();
1729 if let Some(mut callback) = lock.request_frame_callback.take() {
1730 #[cfg(not(feature = "macos-blade"))]
1731 lock.renderer.set_presents_with_transaction(true);
1732 lock.stop_display_link();
1733 drop(lock);
1734 callback(Default::default());
1735
1736 let mut lock = window_state.lock();
1737 lock.request_frame_callback = Some(callback);
1738 #[cfg(not(feature = "macos-blade"))]
1739 lock.renderer.set_presents_with_transaction(false);
1740 lock.start_display_link();
1741 }
1742}
1743
1744unsafe extern "C" fn step(view: *mut c_void) {
1745 let view = view as id;
1746 let window_state = unsafe { get_window_state(&*view) };
1747 let mut lock = window_state.lock();
1748
1749 if let Some(mut callback) = lock.request_frame_callback.take() {
1750 drop(lock);
1751 callback(Default::default());
1752 window_state.lock().request_frame_callback = Some(callback);
1753 }
1754}
1755
1756extern "C" fn valid_attributes_for_marked_text(_: &Object, _: Sel) -> id {
1757 unsafe { msg_send![class!(NSArray), array] }
1758}
1759
1760extern "C" fn has_marked_text(this: &Object, _: Sel) -> BOOL {
1761 let has_marked_text_result =
1762 with_input_handler(this, |input_handler| input_handler.marked_text_range()).flatten();
1763
1764 has_marked_text_result.is_some() as BOOL
1765}
1766
1767extern "C" fn marked_range(this: &Object, _: Sel) -> NSRange {
1768 let marked_range_result =
1769 with_input_handler(this, |input_handler| input_handler.marked_text_range()).flatten();
1770
1771 marked_range_result.map_or(NSRange::invalid(), |range| range.into())
1772}
1773
1774extern "C" fn selected_range(this: &Object, _: Sel) -> NSRange {
1775 let selected_range_result = with_input_handler(this, |input_handler| {
1776 input_handler.selected_text_range(false)
1777 })
1778 .flatten();
1779
1780 selected_range_result.map_or(NSRange::invalid(), |selection| selection.range.into())
1781}
1782
1783extern "C" fn first_rect_for_character_range(
1784 this: &Object,
1785 _: Sel,
1786 range: NSRange,
1787 _: id,
1788) -> NSRect {
1789 let frame = get_frame(this);
1790 with_input_handler(this, |input_handler| {
1791 input_handler.bounds_for_range(range.to_range()?)
1792 })
1793 .flatten()
1794 .map_or(
1795 NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)),
1796 |bounds| {
1797 NSRect::new(
1798 NSPoint::new(
1799 frame.origin.x + bounds.origin.x.0 as f64,
1800 frame.origin.y + frame.size.height
1801 - bounds.origin.y.0 as f64
1802 - bounds.size.height.0 as f64,
1803 ),
1804 NSSize::new(bounds.size.width.0 as f64, bounds.size.height.0 as f64),
1805 )
1806 },
1807 )
1808}
1809
1810fn get_frame(this: &Object) -> NSRect {
1811 unsafe {
1812 let state = get_window_state(this);
1813 let lock = state.lock();
1814 let mut frame = NSWindow::frame(lock.native_window);
1815 let content_layout_rect: CGRect = msg_send![lock.native_window, contentLayoutRect];
1816 let style_mask: NSWindowStyleMask = msg_send![lock.native_window, styleMask];
1817 if !style_mask.contains(NSWindowStyleMask::NSFullSizeContentViewWindowMask) {
1818 frame.origin.y -= frame.size.height - content_layout_rect.size.height;
1819 }
1820 frame
1821 }
1822}
1823
1824extern "C" fn insert_text(this: &Object, _: Sel, text: id, replacement_range: NSRange) {
1825 unsafe {
1826 let is_attributed_string: BOOL =
1827 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1828 let text: id = if is_attributed_string == YES {
1829 msg_send![text, string]
1830 } else {
1831 text
1832 };
1833
1834 let text = text.to_str();
1835 let replacement_range = replacement_range.to_range();
1836 with_input_handler(this, |input_handler| {
1837 input_handler.replace_text_in_range(replacement_range, &text)
1838 });
1839 }
1840}
1841
1842extern "C" fn set_marked_text(
1843 this: &Object,
1844 _: Sel,
1845 text: id,
1846 selected_range: NSRange,
1847 replacement_range: NSRange,
1848) {
1849 unsafe {
1850 let is_attributed_string: BOOL =
1851 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1852 let text: id = if is_attributed_string == YES {
1853 msg_send![text, string]
1854 } else {
1855 text
1856 };
1857 let selected_range = selected_range.to_range();
1858 let replacement_range = replacement_range.to_range();
1859 let text = text.to_str();
1860 with_input_handler(this, |input_handler| {
1861 input_handler.replace_and_mark_text_in_range(replacement_range, &text, selected_range)
1862 });
1863 }
1864}
1865extern "C" fn unmark_text(this: &Object, _: Sel) {
1866 with_input_handler(this, |input_handler| input_handler.unmark_text());
1867}
1868
1869extern "C" fn attributed_substring_for_proposed_range(
1870 this: &Object,
1871 _: Sel,
1872 range: NSRange,
1873 actual_range: *mut c_void,
1874) -> id {
1875 with_input_handler(this, |input_handler| {
1876 let range = range.to_range()?;
1877 if range.is_empty() {
1878 return None;
1879 }
1880 let mut adjusted: Option<Range<usize>> = None;
1881
1882 let selected_text = input_handler.text_for_range(range.clone(), &mut adjusted)?;
1883 if let Some(adjusted) = adjusted {
1884 if adjusted != range {
1885 unsafe { (actual_range as *mut NSRange).write(NSRange::from(adjusted)) };
1886 }
1887 }
1888 unsafe {
1889 let string: id = msg_send![class!(NSAttributedString), alloc];
1890 let string: id = msg_send![string, initWithString: ns_string(&selected_text)];
1891 Some(string)
1892 }
1893 })
1894 .flatten()
1895 .unwrap_or(nil)
1896}
1897
1898// We ignore which selector it asks us to do because the user may have
1899// bound the shortcut to something else.
1900extern "C" fn do_command_by_selector(this: &Object, _: Sel, _: Sel) {
1901 let state = unsafe { get_window_state(this) };
1902 let mut lock = state.as_ref().lock();
1903 let keystroke = lock.keystroke_for_do_command.take();
1904 let mut event_callback = lock.event_callback.take();
1905 drop(lock);
1906
1907 if let Some((keystroke, mut callback)) = keystroke.zip(event_callback.as_mut()) {
1908 let handled = (callback)(PlatformInput::KeyDown(KeyDownEvent {
1909 keystroke,
1910 is_held: false,
1911 }));
1912 state.as_ref().lock().do_command_handled = Some(!handled.propagate);
1913 }
1914
1915 state.as_ref().lock().event_callback = event_callback;
1916}
1917
1918extern "C" fn view_did_change_effective_appearance(this: &Object, _: Sel) {
1919 unsafe {
1920 let state = get_window_state(this);
1921 let mut lock = state.as_ref().lock();
1922 if let Some(mut callback) = lock.appearance_changed_callback.take() {
1923 drop(lock);
1924 callback();
1925 state.lock().appearance_changed_callback = Some(callback);
1926 }
1927 }
1928}
1929
1930extern "C" fn accepts_first_mouse(this: &Object, _: Sel, _: id) -> BOOL {
1931 let window_state = unsafe { get_window_state(this) };
1932 let mut lock = window_state.as_ref().lock();
1933 lock.first_mouse = true;
1934 YES
1935}
1936
1937extern "C" fn character_index_for_point(this: &Object, _: Sel, position: NSPoint) -> u64 {
1938 let position = screen_point_to_gpui_point(this, position);
1939 with_input_handler(this, |input_handler| {
1940 input_handler.character_index_for_point(position)
1941 })
1942 .flatten()
1943 .map(|index| index as u64)
1944 .unwrap_or(NSNotFound as u64)
1945}
1946
1947fn screen_point_to_gpui_point(this: &Object, position: NSPoint) -> Point<Pixels> {
1948 let frame = get_frame(this);
1949 let window_x = position.x - frame.origin.x;
1950 let window_y = frame.size.height - (position.y - frame.origin.y);
1951 let position = point(px(window_x as f32), px(window_y as f32));
1952 position
1953}
1954
1955extern "C" fn dragging_entered(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1956 let window_state = unsafe { get_window_state(this) };
1957 let position = drag_event_position(&window_state, dragging_info);
1958 let paths = external_paths_from_event(dragging_info);
1959 if let Some(event) =
1960 paths.map(|paths| PlatformInput::FileDrop(FileDropEvent::Entered { position, paths }))
1961 {
1962 if send_new_event(&window_state, event) {
1963 window_state.lock().external_files_dragged = true;
1964 return NSDragOperationCopy;
1965 }
1966 }
1967 NSDragOperationNone
1968}
1969
1970extern "C" fn dragging_updated(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1971 let window_state = unsafe { get_window_state(this) };
1972 let position = drag_event_position(&window_state, dragging_info);
1973 if send_new_event(
1974 &window_state,
1975 PlatformInput::FileDrop(FileDropEvent::Pending { position }),
1976 ) {
1977 NSDragOperationCopy
1978 } else {
1979 NSDragOperationNone
1980 }
1981}
1982
1983extern "C" fn dragging_exited(this: &Object, _: Sel, _: id) {
1984 let window_state = unsafe { get_window_state(this) };
1985 send_new_event(
1986 &window_state,
1987 PlatformInput::FileDrop(FileDropEvent::Exited),
1988 );
1989 window_state.lock().external_files_dragged = false;
1990}
1991
1992extern "C" fn perform_drag_operation(this: &Object, _: Sel, dragging_info: id) -> BOOL {
1993 let window_state = unsafe { get_window_state(this) };
1994 let position = drag_event_position(&window_state, dragging_info);
1995 send_new_event(
1996 &window_state,
1997 PlatformInput::FileDrop(FileDropEvent::Submit { position }),
1998 )
1999 .to_objc()
2000}
2001
2002fn external_paths_from_event(dragging_info: *mut Object) -> Option<ExternalPaths> {
2003 let mut paths = SmallVec::new();
2004 let pasteboard: id = unsafe { msg_send![dragging_info, draggingPasteboard] };
2005 let filenames = unsafe { NSPasteboard::propertyListForType(pasteboard, NSFilenamesPboardType) };
2006 if filenames == nil {
2007 return None;
2008 }
2009 for file in unsafe { filenames.iter() } {
2010 let path = unsafe {
2011 let f = NSString::UTF8String(file);
2012 CStr::from_ptr(f).to_string_lossy().into_owned()
2013 };
2014 paths.push(PathBuf::from(path))
2015 }
2016 Some(ExternalPaths(paths))
2017}
2018
2019extern "C" fn conclude_drag_operation(this: &Object, _: Sel, _: id) {
2020 let window_state = unsafe { get_window_state(this) };
2021 send_new_event(
2022 &window_state,
2023 PlatformInput::FileDrop(FileDropEvent::Exited),
2024 );
2025}
2026
2027async fn synthetic_drag(
2028 window_state: Weak<Mutex<MacWindowState>>,
2029 drag_id: usize,
2030 event: MouseMoveEvent,
2031) {
2032 loop {
2033 Timer::after(Duration::from_millis(16)).await;
2034 if let Some(window_state) = window_state.upgrade() {
2035 let mut lock = window_state.lock();
2036 if lock.synthetic_drag_counter == drag_id {
2037 if let Some(mut callback) = lock.event_callback.take() {
2038 drop(lock);
2039 callback(PlatformInput::MouseMove(event.clone()));
2040 window_state.lock().event_callback = Some(callback);
2041 }
2042 } else {
2043 break;
2044 }
2045 }
2046 }
2047}
2048
2049fn send_new_event(window_state_lock: &Mutex<MacWindowState>, e: PlatformInput) -> bool {
2050 let window_state = window_state_lock.lock().event_callback.take();
2051 if let Some(mut callback) = window_state {
2052 callback(e);
2053 window_state_lock.lock().event_callback = Some(callback);
2054 true
2055 } else {
2056 false
2057 }
2058}
2059
2060fn drag_event_position(window_state: &Mutex<MacWindowState>, dragging_info: id) -> Point<Pixels> {
2061 let drag_location: NSPoint = unsafe { msg_send![dragging_info, draggingLocation] };
2062 convert_mouse_position(drag_location, window_state.lock().content_size().height)
2063}
2064
2065fn with_input_handler<F, R>(window: &Object, f: F) -> Option<R>
2066where
2067 F: FnOnce(&mut PlatformInputHandler) -> R,
2068{
2069 let window_state = unsafe { get_window_state(window) };
2070 let mut lock = window_state.as_ref().lock();
2071 if let Some(mut input_handler) = lock.input_handler.take() {
2072 drop(lock);
2073 let result = f(&mut input_handler);
2074 window_state.lock().input_handler = Some(input_handler);
2075 Some(result)
2076 } else {
2077 None
2078 }
2079}
2080
2081unsafe fn display_id_for_screen(screen: id) -> CGDirectDisplayID {
2082 unsafe {
2083 let device_description = NSScreen::deviceDescription(screen);
2084 let screen_number_key: id = NSString::alloc(nil).init_str("NSScreenNumber");
2085 let screen_number = device_description.objectForKey_(screen_number_key);
2086 let screen_number: NSUInteger = msg_send![screen_number, unsignedIntegerValue];
2087 screen_number as CGDirectDisplayID
2088 }
2089}