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