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