1use super::{BoolExt, MacDisplay, NSRange, NSStringExt, ns_string, renderer};
2use crate::{
3 AnyWindowHandle, Bounds, DisplayLink, ExternalPaths, FileDropEvent, ForegroundExecutor,
4 KeyDownEvent, Keystroke, Modifiers, ModifiersChangedEvent, MouseButton, MouseDownEvent,
5 MouseMoveEvent, MouseUpEvent, Pixels, PlatformAtlas, PlatformDisplay, PlatformInput,
6 PlatformWindow, Point, PromptButton, PromptLevel, RequestFrameOptions, ScaledPixels, Size,
7 Timer, WindowAppearance, WindowBackgroundAppearance, WindowBounds, WindowControlArea,
8 WindowKind, WindowParams, platform::PlatformInputHandler, point, px, size,
9};
10use block::ConcreteBlock;
11use cocoa::{
12 appkit::{
13 NSApplication, NSBackingStoreBuffered, NSColor, NSEvent, NSEventModifierFlags,
14 NSFilenamesPboardType, NSPasteboard, NSScreen, NSView, NSViewHeightSizable,
15 NSViewWidthSizable, NSWindow, NSWindowButton, NSWindowCollectionBehavior,
16 NSWindowOcclusionState, NSWindowStyleMask, NSWindowTitleVisibility,
17 },
18 base::{id, nil},
19 foundation::{
20 NSArray, NSAutoreleasePool, NSDictionary, NSFastEnumeration, NSInteger, NSNotFound,
21 NSOperatingSystemVersion, NSPoint, NSProcessInfo, NSRect, NSSize, NSString, NSUInteger,
22 NSUserDefaults,
23 },
24};
25use core_graphics::display::{CGDirectDisplayID, CGPoint, CGRect};
26use ctor::ctor;
27use futures::channel::oneshot;
28use objc::{
29 class,
30 declare::ClassDecl,
31 msg_send,
32 runtime::{BOOL, Class, NO, Object, Protocol, Sel, YES},
33 sel, sel_impl,
34};
35use parking_lot::Mutex;
36use raw_window_handle as rwh;
37use smallvec::SmallVec;
38use std::{
39 cell::Cell,
40 ffi::{CStr, c_void},
41 mem,
42 ops::Range,
43 path::PathBuf,
44 ptr::{self, NonNull},
45 rc::Rc,
46 sync::{Arc, Weak},
47 time::Duration,
48};
49use util::ResultExt;
50
51const WINDOW_STATE_IVAR: &str = "windowState";
52
53static mut WINDOW_CLASS: *const Class = ptr::null();
54static mut PANEL_CLASS: *const Class = ptr::null();
55static mut VIEW_CLASS: *const Class = ptr::null();
56
57#[allow(non_upper_case_globals)]
58const NSWindowStyleMaskNonactivatingPanel: NSWindowStyleMask =
59 NSWindowStyleMask::from_bits_retain(1 << 7);
60#[allow(non_upper_case_globals)]
61const NSNormalWindowLevel: NSInteger = 0;
62#[allow(non_upper_case_globals)]
63const NSPopUpWindowLevel: NSInteger = 101;
64#[allow(non_upper_case_globals)]
65const NSTrackingMouseEnteredAndExited: NSUInteger = 0x01;
66#[allow(non_upper_case_globals)]
67const NSTrackingMouseMoved: NSUInteger = 0x02;
68#[allow(non_upper_case_globals)]
69const NSTrackingActiveAlways: NSUInteger = 0x80;
70#[allow(non_upper_case_globals)]
71const NSTrackingInVisibleRect: NSUInteger = 0x200;
72#[allow(non_upper_case_globals)]
73const NSWindowAnimationBehaviorUtilityWindow: NSInteger = 4;
74#[allow(non_upper_case_globals)]
75const NSViewLayerContentsRedrawDuringViewResize: NSInteger = 2;
76// https://developer.apple.com/documentation/appkit/nsdragoperation
77type NSDragOperation = NSUInteger;
78#[allow(non_upper_case_globals)]
79const NSDragOperationNone: NSDragOperation = 0;
80#[allow(non_upper_case_globals)]
81const NSDragOperationCopy: NSDragOperation = 1;
82
83#[link(name = "CoreGraphics", kind = "framework")]
84unsafe extern "C" {
85 // Widely used private APIs; Apple uses them for their Terminal.app.
86 fn CGSMainConnectionID() -> id;
87 fn CGSSetWindowBackgroundBlurRadius(
88 connection_id: id,
89 window_id: NSInteger,
90 radius: i64,
91 ) -> i32;
92}
93
94#[ctor]
95unsafe fn build_classes() {
96 unsafe {
97 WINDOW_CLASS = build_window_class("GPUIWindow", class!(NSWindow));
98 PANEL_CLASS = build_window_class("GPUIPanel", class!(NSPanel));
99 VIEW_CLASS = {
100 let mut decl = ClassDecl::new("GPUIView", class!(NSView)).unwrap();
101 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
102 unsafe {
103 decl.add_method(sel!(dealloc), dealloc_view as extern "C" fn(&Object, Sel));
104
105 decl.add_method(
106 sel!(performKeyEquivalent:),
107 handle_key_equivalent as extern "C" fn(&Object, Sel, id) -> BOOL,
108 );
109 decl.add_method(
110 sel!(keyDown:),
111 handle_key_down as extern "C" fn(&Object, Sel, id),
112 );
113 decl.add_method(
114 sel!(keyUp:),
115 handle_key_up as extern "C" fn(&Object, Sel, id),
116 );
117 decl.add_method(
118 sel!(mouseDown:),
119 handle_view_event as extern "C" fn(&Object, Sel, id),
120 );
121 decl.add_method(
122 sel!(mouseUp:),
123 handle_view_event as extern "C" fn(&Object, Sel, id),
124 );
125 decl.add_method(
126 sel!(rightMouseDown:),
127 handle_view_event as extern "C" fn(&Object, Sel, id),
128 );
129 decl.add_method(
130 sel!(rightMouseUp:),
131 handle_view_event as extern "C" fn(&Object, Sel, id),
132 );
133 decl.add_method(
134 sel!(otherMouseDown:),
135 handle_view_event as extern "C" fn(&Object, Sel, id),
136 );
137 decl.add_method(
138 sel!(otherMouseUp:),
139 handle_view_event as extern "C" fn(&Object, Sel, id),
140 );
141 decl.add_method(
142 sel!(mouseMoved:),
143 handle_view_event as extern "C" fn(&Object, Sel, id),
144 );
145 decl.add_method(
146 sel!(mouseExited:),
147 handle_view_event as extern "C" fn(&Object, Sel, id),
148 );
149 decl.add_method(
150 sel!(mouseDragged:),
151 handle_view_event as extern "C" fn(&Object, Sel, id),
152 );
153 decl.add_method(
154 sel!(scrollWheel:),
155 handle_view_event as extern "C" fn(&Object, Sel, id),
156 );
157 decl.add_method(
158 sel!(swipeWithEvent:),
159 handle_view_event as extern "C" fn(&Object, Sel, id),
160 );
161 decl.add_method(
162 sel!(flagsChanged:),
163 handle_view_event as extern "C" fn(&Object, Sel, id),
164 );
165
166 decl.add_method(
167 sel!(makeBackingLayer),
168 make_backing_layer as extern "C" fn(&Object, Sel) -> id,
169 );
170
171 decl.add_protocol(Protocol::get("CALayerDelegate").unwrap());
172 decl.add_method(
173 sel!(viewDidChangeBackingProperties),
174 view_did_change_backing_properties as extern "C" fn(&Object, Sel),
175 );
176 decl.add_method(
177 sel!(setFrameSize:),
178 set_frame_size as extern "C" fn(&Object, Sel, NSSize),
179 );
180 decl.add_method(
181 sel!(displayLayer:),
182 display_layer as extern "C" fn(&Object, Sel, id),
183 );
184
185 decl.add_protocol(Protocol::get("NSTextInputClient").unwrap());
186 decl.add_method(
187 sel!(validAttributesForMarkedText),
188 valid_attributes_for_marked_text as extern "C" fn(&Object, Sel) -> id,
189 );
190 decl.add_method(
191 sel!(hasMarkedText),
192 has_marked_text as extern "C" fn(&Object, Sel) -> BOOL,
193 );
194 decl.add_method(
195 sel!(markedRange),
196 marked_range as extern "C" fn(&Object, Sel) -> NSRange,
197 );
198 decl.add_method(
199 sel!(selectedRange),
200 selected_range as extern "C" fn(&Object, Sel) -> NSRange,
201 );
202 decl.add_method(
203 sel!(firstRectForCharacterRange:actualRange:),
204 first_rect_for_character_range
205 as extern "C" fn(&Object, Sel, NSRange, id) -> NSRect,
206 );
207 decl.add_method(
208 sel!(insertText:replacementRange:),
209 insert_text as extern "C" fn(&Object, Sel, id, NSRange),
210 );
211 decl.add_method(
212 sel!(setMarkedText:selectedRange:replacementRange:),
213 set_marked_text as extern "C" fn(&Object, Sel, id, NSRange, NSRange),
214 );
215 decl.add_method(sel!(unmarkText), unmark_text as extern "C" fn(&Object, Sel));
216 decl.add_method(
217 sel!(attributedSubstringForProposedRange:actualRange:),
218 attributed_substring_for_proposed_range
219 as extern "C" fn(&Object, Sel, NSRange, *mut c_void) -> id,
220 );
221 decl.add_method(
222 sel!(viewDidChangeEffectiveAppearance),
223 view_did_change_effective_appearance as extern "C" fn(&Object, Sel),
224 );
225
226 // Suppress beep on keystrokes with modifier keys.
227 decl.add_method(
228 sel!(doCommandBySelector:),
229 do_command_by_selector as extern "C" fn(&Object, Sel, Sel),
230 );
231
232 decl.add_method(
233 sel!(acceptsFirstMouse:),
234 accepts_first_mouse as extern "C" fn(&Object, Sel, id) -> BOOL,
235 );
236
237 decl.add_method(
238 sel!(characterIndexForPoint:),
239 character_index_for_point as extern "C" fn(&Object, Sel, NSPoint) -> u64,
240 );
241 }
242 decl.register()
243 };
244 }
245}
246
247pub(crate) fn convert_mouse_position(position: NSPoint, window_height: Pixels) -> Point<Pixels> {
248 point(
249 px(position.x as f32),
250 // macOS screen coordinates are relative to bottom left
251 window_height - px(position.y as f32),
252 )
253}
254
255unsafe fn build_window_class(name: &'static str, superclass: &Class) -> *const Class {
256 unsafe {
257 let mut decl = ClassDecl::new(name, superclass).unwrap();
258 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
259 decl.add_method(sel!(dealloc), dealloc_window as extern "C" fn(&Object, Sel));
260
261 decl.add_method(
262 sel!(canBecomeMainWindow),
263 yes as extern "C" fn(&Object, Sel) -> BOOL,
264 );
265 decl.add_method(
266 sel!(canBecomeKeyWindow),
267 yes as extern "C" fn(&Object, Sel) -> BOOL,
268 );
269 decl.add_method(
270 sel!(windowDidResize:),
271 window_did_resize as extern "C" fn(&Object, Sel, id),
272 );
273 decl.add_method(
274 sel!(windowDidChangeOcclusionState:),
275 window_did_change_occlusion_state as extern "C" fn(&Object, Sel, id),
276 );
277 decl.add_method(
278 sel!(windowWillEnterFullScreen:),
279 window_will_enter_fullscreen as extern "C" fn(&Object, Sel, id),
280 );
281 decl.add_method(
282 sel!(windowWillExitFullScreen:),
283 window_will_exit_fullscreen as extern "C" fn(&Object, Sel, id),
284 );
285 decl.add_method(
286 sel!(windowDidMove:),
287 window_did_move as extern "C" fn(&Object, Sel, id),
288 );
289 decl.add_method(
290 sel!(windowDidChangeScreen:),
291 window_did_change_screen as extern "C" fn(&Object, Sel, id),
292 );
293 decl.add_method(
294 sel!(windowDidBecomeKey:),
295 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
296 );
297 decl.add_method(
298 sel!(windowDidResignKey:),
299 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
300 );
301 decl.add_method(
302 sel!(windowShouldClose:),
303 window_should_close as extern "C" fn(&Object, Sel, id) -> BOOL,
304 );
305
306 decl.add_method(sel!(close), close_window as extern "C" fn(&Object, Sel));
307
308 decl.add_method(
309 sel!(draggingEntered:),
310 dragging_entered as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
311 );
312 decl.add_method(
313 sel!(draggingUpdated:),
314 dragging_updated as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
315 );
316 decl.add_method(
317 sel!(draggingExited:),
318 dragging_exited as extern "C" fn(&Object, Sel, id),
319 );
320 decl.add_method(
321 sel!(performDragOperation:),
322 perform_drag_operation as extern "C" fn(&Object, Sel, id) -> BOOL,
323 );
324 decl.add_method(
325 sel!(concludeDragOperation:),
326 conclude_drag_operation as extern "C" fn(&Object, Sel, id),
327 );
328
329 decl.register()
330 }
331}
332
333struct MacWindowState {
334 handle: AnyWindowHandle,
335 executor: ForegroundExecutor,
336 native_window: id,
337 native_view: NonNull<Object>,
338 display_link: Option<DisplayLink>,
339 renderer: renderer::Renderer,
340 request_frame_callback: Option<Box<dyn FnMut(RequestFrameOptions)>>,
341 event_callback: Option<Box<dyn FnMut(PlatformInput) -> crate::DispatchEventResult>>,
342 activate_callback: Option<Box<dyn FnMut(bool)>>,
343 resize_callback: Option<Box<dyn FnMut(Size<Pixels>, f32)>>,
344 moved_callback: Option<Box<dyn FnMut()>>,
345 should_close_callback: Option<Box<dyn FnMut() -> bool>>,
346 close_callback: Option<Box<dyn FnOnce()>>,
347 appearance_changed_callback: Option<Box<dyn FnMut()>>,
348 input_handler: Option<PlatformInputHandler>,
349 last_key_equivalent: Option<KeyDownEvent>,
350 synthetic_drag_counter: usize,
351 traffic_light_position: Option<Point<Pixels>>,
352 transparent_titlebar: bool,
353 previous_modifiers_changed_event: Option<PlatformInput>,
354 keystroke_for_do_command: Option<Keystroke>,
355 do_command_handled: Option<bool>,
356 external_files_dragged: bool,
357 // Whether the next left-mouse click is also the focusing click.
358 first_mouse: bool,
359 fullscreen_restore_bounds: Bounds<Pixels>,
360}
361
362impl MacWindowState {
363 fn move_traffic_light(&self) {
364 if let Some(traffic_light_position) = self.traffic_light_position {
365 if self.is_fullscreen() {
366 // Moving traffic lights while fullscreen doesn't work,
367 // see https://github.com/zed-industries/zed/issues/4712
368 return;
369 }
370
371 let titlebar_height = self.titlebar_height();
372
373 unsafe {
374 let close_button: id = msg_send![
375 self.native_window,
376 standardWindowButton: NSWindowButton::NSWindowCloseButton
377 ];
378 let min_button: id = msg_send![
379 self.native_window,
380 standardWindowButton: NSWindowButton::NSWindowMiniaturizeButton
381 ];
382 let zoom_button: id = msg_send![
383 self.native_window,
384 standardWindowButton: NSWindowButton::NSWindowZoomButton
385 ];
386
387 let mut close_button_frame: CGRect = msg_send![close_button, frame];
388 let mut min_button_frame: CGRect = msg_send![min_button, frame];
389 let mut zoom_button_frame: CGRect = msg_send![zoom_button, frame];
390 let mut origin = point(
391 traffic_light_position.x,
392 titlebar_height
393 - traffic_light_position.y
394 - px(close_button_frame.size.height as f32),
395 );
396 let button_spacing =
397 px((min_button_frame.origin.x - close_button_frame.origin.x) as f32);
398
399 close_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
400 let _: () = msg_send![close_button, setFrame: close_button_frame];
401 origin.x += button_spacing;
402
403 min_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
404 let _: () = msg_send![min_button, setFrame: min_button_frame];
405 origin.x += button_spacing;
406
407 zoom_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
408 let _: () = msg_send![zoom_button, setFrame: zoom_button_frame];
409 origin.x += button_spacing;
410 }
411 }
412 }
413
414 fn start_display_link(&mut self) {
415 self.stop_display_link();
416 unsafe {
417 if !self
418 .native_window
419 .occlusionState()
420 .contains(NSWindowOcclusionState::NSWindowOcclusionStateVisible)
421 {
422 return;
423 }
424 }
425 let display_id = unsafe { display_id_for_screen(self.native_window.screen()) };
426 if let Some(mut display_link) =
427 DisplayLink::new(display_id, self.native_view.as_ptr() as *mut c_void, step).log_err()
428 {
429 display_link.start().log_err();
430 self.display_link = Some(display_link);
431 }
432 }
433
434 fn stop_display_link(&mut self) {
435 self.display_link = None;
436 }
437
438 fn is_maximized(&self) -> bool {
439 unsafe {
440 let bounds = self.bounds();
441 let screen_size = self.native_window.screen().visibleFrame().into();
442 bounds.size == screen_size
443 }
444 }
445
446 fn is_fullscreen(&self) -> bool {
447 unsafe {
448 let style_mask = self.native_window.styleMask();
449 style_mask.contains(NSWindowStyleMask::NSFullScreenWindowMask)
450 }
451 }
452
453 fn bounds(&self) -> Bounds<Pixels> {
454 let mut window_frame = unsafe { NSWindow::frame(self.native_window) };
455 let screen_frame = unsafe {
456 let screen = NSWindow::screen(self.native_window);
457 NSScreen::frame(screen)
458 };
459
460 // Flip the y coordinate to be top-left origin
461 window_frame.origin.y =
462 screen_frame.size.height - window_frame.origin.y - window_frame.size.height;
463
464 Bounds::new(
465 point(
466 px((window_frame.origin.x - screen_frame.origin.x) as f32),
467 px((window_frame.origin.y + screen_frame.origin.y) as f32),
468 ),
469 size(
470 px(window_frame.size.width as f32),
471 px(window_frame.size.height as f32),
472 ),
473 )
474 }
475
476 fn content_size(&self) -> Size<Pixels> {
477 let NSSize { width, height, .. } =
478 unsafe { NSView::frame(self.native_window.contentView()) }.size;
479 size(px(width as f32), px(height as f32))
480 }
481
482 fn scale_factor(&self) -> f32 {
483 get_scale_factor(self.native_window)
484 }
485
486 fn titlebar_height(&self) -> Pixels {
487 unsafe {
488 let frame = NSWindow::frame(self.native_window);
489 let content_layout_rect: CGRect = msg_send![self.native_window, contentLayoutRect];
490 px((frame.size.height - content_layout_rect.size.height) as f32)
491 }
492 }
493
494 fn window_bounds(&self) -> WindowBounds {
495 if self.is_fullscreen() {
496 WindowBounds::Fullscreen(self.fullscreen_restore_bounds)
497 } else {
498 WindowBounds::Windowed(self.bounds())
499 }
500 }
501}
502
503unsafe impl Send for MacWindowState {}
504
505pub(crate) struct MacWindow(Arc<Mutex<MacWindowState>>);
506
507impl MacWindow {
508 pub fn open(
509 handle: AnyWindowHandle,
510 WindowParams {
511 bounds,
512 titlebar,
513 kind,
514 is_movable,
515 focus,
516 show,
517 display_id,
518 window_min_size,
519 }: WindowParams,
520 executor: ForegroundExecutor,
521 renderer_context: renderer::Context,
522 ) -> Self {
523 unsafe {
524 let pool = NSAutoreleasePool::new(nil);
525
526 let () = msg_send![class!(NSWindow), setAllowsAutomaticWindowTabbing: NO];
527
528 let mut style_mask;
529 if let Some(titlebar) = titlebar.as_ref() {
530 style_mask = NSWindowStyleMask::NSClosableWindowMask
531 | NSWindowStyleMask::NSMiniaturizableWindowMask
532 | NSWindowStyleMask::NSResizableWindowMask
533 | NSWindowStyleMask::NSTitledWindowMask;
534
535 if titlebar.appears_transparent {
536 style_mask |= NSWindowStyleMask::NSFullSizeContentViewWindowMask;
537 }
538 } else {
539 style_mask = NSWindowStyleMask::NSTitledWindowMask
540 | NSWindowStyleMask::NSFullSizeContentViewWindowMask;
541 }
542
543 let native_window: id = match kind {
544 WindowKind::Normal => msg_send![WINDOW_CLASS, alloc],
545 WindowKind::PopUp => {
546 style_mask |= NSWindowStyleMaskNonactivatingPanel;
547 msg_send![PANEL_CLASS, alloc]
548 }
549 };
550
551 let display = display_id
552 .and_then(MacDisplay::find_by_id)
553 .unwrap_or_else(MacDisplay::primary);
554
555 let mut target_screen = nil;
556 let mut screen_frame = None;
557
558 let screens = NSScreen::screens(nil);
559 let count: u64 = cocoa::foundation::NSArray::count(screens);
560 for i in 0..count {
561 let screen = cocoa::foundation::NSArray::objectAtIndex(screens, i);
562 let frame = NSScreen::frame(screen);
563 let display_id = display_id_for_screen(screen);
564 if display_id == display.0 {
565 screen_frame = Some(frame);
566 target_screen = screen;
567 }
568 }
569
570 let screen_frame = screen_frame.unwrap_or_else(|| {
571 let screen = NSScreen::mainScreen(nil);
572 target_screen = screen;
573 NSScreen::frame(screen)
574 });
575
576 let window_rect = NSRect::new(
577 NSPoint::new(
578 screen_frame.origin.x + bounds.origin.x.0 as f64,
579 screen_frame.origin.y
580 + (display.bounds().size.height - bounds.origin.y).0 as f64,
581 ),
582 NSSize::new(bounds.size.width.0 as f64, bounds.size.height.0 as f64),
583 );
584
585 let native_window = native_window.initWithContentRect_styleMask_backing_defer_screen_(
586 window_rect,
587 style_mask,
588 NSBackingStoreBuffered,
589 NO,
590 target_screen,
591 );
592 assert!(!native_window.is_null());
593 let () = msg_send![
594 native_window,
595 registerForDraggedTypes:
596 NSArray::arrayWithObject(nil, NSFilenamesPboardType)
597 ];
598 let () = msg_send![
599 native_window,
600 setReleasedWhenClosed: NO
601 ];
602
603 let native_view: id = msg_send![VIEW_CLASS, alloc];
604 let native_view = NSView::init(native_view);
605 assert!(!native_view.is_null());
606
607 let mut window = Self(Arc::new(Mutex::new(MacWindowState {
608 handle,
609 executor,
610 native_window,
611 native_view: NonNull::new_unchecked(native_view),
612 display_link: None,
613 renderer: renderer::new_renderer(
614 renderer_context,
615 native_window as *mut _,
616 native_view as *mut _,
617 bounds.size.map(|pixels| pixels.0),
618 false,
619 ),
620 request_frame_callback: None,
621 event_callback: None,
622 activate_callback: None,
623 resize_callback: None,
624 moved_callback: None,
625 should_close_callback: None,
626 close_callback: None,
627 appearance_changed_callback: None,
628 input_handler: None,
629 last_key_equivalent: None,
630 synthetic_drag_counter: 0,
631 traffic_light_position: titlebar
632 .as_ref()
633 .and_then(|titlebar| titlebar.traffic_light_position),
634 transparent_titlebar: titlebar
635 .as_ref()
636 .map_or(true, |titlebar| titlebar.appears_transparent),
637 previous_modifiers_changed_event: None,
638 keystroke_for_do_command: None,
639 do_command_handled: None,
640 external_files_dragged: false,
641 first_mouse: false,
642 fullscreen_restore_bounds: Bounds::default(),
643 })));
644
645 (*native_window).set_ivar(
646 WINDOW_STATE_IVAR,
647 Arc::into_raw(window.0.clone()) as *const c_void,
648 );
649 native_window.setDelegate_(native_window);
650 (*native_view).set_ivar(
651 WINDOW_STATE_IVAR,
652 Arc::into_raw(window.0.clone()) as *const c_void,
653 );
654
655 if let Some(title) = titlebar
656 .as_ref()
657 .and_then(|t| t.title.as_ref().map(AsRef::as_ref))
658 {
659 window.set_title(title);
660 }
661
662 native_window.setMovable_(is_movable as BOOL);
663
664 if let Some(window_min_size) = window_min_size {
665 native_window.setContentMinSize_(NSSize {
666 width: window_min_size.width.to_f64(),
667 height: window_min_size.height.to_f64(),
668 });
669 }
670
671 if titlebar.map_or(true, |titlebar| titlebar.appears_transparent) {
672 native_window.setTitlebarAppearsTransparent_(YES);
673 native_window.setTitleVisibility_(NSWindowTitleVisibility::NSWindowTitleHidden);
674 }
675
676 native_view.setAutoresizingMask_(NSViewWidthSizable | NSViewHeightSizable);
677 native_view.setWantsBestResolutionOpenGLSurface_(YES);
678
679 // From winit crate: On Mojave, views automatically become layer-backed shortly after
680 // being added to a native_window. Changing the layer-backedness of a view breaks the
681 // association between the view and its associated OpenGL context. To work around this,
682 // on we explicitly make the view layer-backed up front so that AppKit doesn't do it
683 // itself and break the association with its context.
684 native_view.setWantsLayer(YES);
685 let _: () = msg_send![
686 native_view,
687 setLayerContentsRedrawPolicy: NSViewLayerContentsRedrawDuringViewResize
688 ];
689
690 native_window.setContentView_(native_view.autorelease());
691 native_window.makeFirstResponder_(native_view);
692
693 match kind {
694 WindowKind::Normal => {
695 native_window.setLevel_(NSNormalWindowLevel);
696 native_window.setAcceptsMouseMovedEvents_(YES);
697 }
698 WindowKind::PopUp => {
699 // Use a tracking area to allow receiving MouseMoved events even when
700 // the window or application aren't active, which is often the case
701 // e.g. for notification windows.
702 let tracking_area: id = msg_send![class!(NSTrackingArea), alloc];
703 let _: () = msg_send![
704 tracking_area,
705 initWithRect: NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.))
706 options: NSTrackingMouseEnteredAndExited | NSTrackingMouseMoved | NSTrackingActiveAlways | NSTrackingInVisibleRect
707 owner: native_view
708 userInfo: nil
709 ];
710 let _: () =
711 msg_send![native_view, addTrackingArea: tracking_area.autorelease()];
712
713 native_window.setLevel_(NSPopUpWindowLevel);
714 let _: () = msg_send![
715 native_window,
716 setAnimationBehavior: NSWindowAnimationBehaviorUtilityWindow
717 ];
718 native_window.setCollectionBehavior_(
719 NSWindowCollectionBehavior::NSWindowCollectionBehaviorCanJoinAllSpaces |
720 NSWindowCollectionBehavior::NSWindowCollectionBehaviorFullScreenAuxiliary
721 );
722 }
723 }
724
725 if focus && show {
726 native_window.makeKeyAndOrderFront_(nil);
727 } else if show {
728 native_window.orderFront_(nil);
729 }
730
731 // Set the initial position of the window to the specified origin.
732 // Although we already specified the position using `initWithContentRect_styleMask_backing_defer_screen_`,
733 // the window position might be incorrect if the main screen (the screen that contains the window that has focus)
734 // is different from the primary screen.
735 NSWindow::setFrameTopLeftPoint_(native_window, window_rect.origin);
736 window.0.lock().move_traffic_light();
737
738 pool.drain();
739
740 window
741 }
742 }
743
744 pub fn active_window() -> Option<AnyWindowHandle> {
745 unsafe {
746 let app = NSApplication::sharedApplication(nil);
747 let main_window: id = msg_send![app, mainWindow];
748 if main_window.is_null() {
749 return None;
750 }
751
752 if msg_send![main_window, isKindOfClass: WINDOW_CLASS] {
753 let handle = get_window_state(&*main_window).lock().handle;
754 Some(handle)
755 } else {
756 None
757 }
758 }
759 }
760
761 pub fn ordered_windows() -> Vec<AnyWindowHandle> {
762 unsafe {
763 let app = NSApplication::sharedApplication(nil);
764 let windows: id = msg_send![app, orderedWindows];
765 let count: NSUInteger = msg_send![windows, count];
766
767 let mut window_handles = Vec::new();
768 for i in 0..count {
769 let window: id = msg_send![windows, objectAtIndex:i];
770 if msg_send![window, isKindOfClass: WINDOW_CLASS] {
771 let handle = get_window_state(&*window).lock().handle;
772 window_handles.push(handle);
773 }
774 }
775
776 window_handles
777 }
778 }
779}
780
781impl Drop for MacWindow {
782 fn drop(&mut self) {
783 let mut this = self.0.lock();
784 this.renderer.destroy();
785 let window = this.native_window;
786 this.display_link.take();
787 unsafe {
788 this.native_window.setDelegate_(nil);
789 }
790 this.input_handler.take();
791 this.executor
792 .spawn(async move {
793 unsafe {
794 window.close();
795 window.autorelease();
796 }
797 })
798 .detach();
799 }
800}
801
802impl PlatformWindow for MacWindow {
803 fn bounds(&self) -> Bounds<Pixels> {
804 self.0.as_ref().lock().bounds()
805 }
806
807 fn window_bounds(&self) -> WindowBounds {
808 self.0.as_ref().lock().window_bounds()
809 }
810
811 fn is_maximized(&self) -> bool {
812 self.0.as_ref().lock().is_maximized()
813 }
814
815 fn content_size(&self) -> Size<Pixels> {
816 self.0.as_ref().lock().content_size()
817 }
818
819 fn resize(&mut self, size: Size<Pixels>) {
820 let this = self.0.lock();
821 let window = this.native_window;
822 this.executor
823 .spawn(async move {
824 unsafe {
825 window.setContentSize_(NSSize {
826 width: size.width.0 as f64,
827 height: size.height.0 as f64,
828 });
829 }
830 })
831 .detach();
832 }
833
834 fn scale_factor(&self) -> f32 {
835 self.0.as_ref().lock().scale_factor()
836 }
837
838 fn appearance(&self) -> WindowAppearance {
839 unsafe {
840 let appearance: id = msg_send![self.0.lock().native_window, effectiveAppearance];
841 WindowAppearance::from_native(appearance)
842 }
843 }
844
845 fn display(&self) -> Option<Rc<dyn PlatformDisplay>> {
846 unsafe {
847 let screen = self.0.lock().native_window.screen();
848 if screen.is_null() {
849 return None;
850 }
851 let device_description: id = msg_send![screen, deviceDescription];
852 let screen_number: id = NSDictionary::valueForKey_(
853 device_description,
854 NSString::alloc(nil).init_str("NSScreenNumber"),
855 );
856
857 let screen_number: u32 = msg_send![screen_number, unsignedIntValue];
858
859 Some(Rc::new(MacDisplay(screen_number)))
860 }
861 }
862
863 fn mouse_position(&self) -> Point<Pixels> {
864 let position = unsafe {
865 self.0
866 .lock()
867 .native_window
868 .mouseLocationOutsideOfEventStream()
869 };
870 convert_mouse_position(position, self.content_size().height)
871 }
872
873 fn modifiers(&self) -> Modifiers {
874 unsafe {
875 let modifiers: NSEventModifierFlags = msg_send![class!(NSEvent), modifierFlags];
876
877 let control = modifiers.contains(NSEventModifierFlags::NSControlKeyMask);
878 let alt = modifiers.contains(NSEventModifierFlags::NSAlternateKeyMask);
879 let shift = modifiers.contains(NSEventModifierFlags::NSShiftKeyMask);
880 let command = modifiers.contains(NSEventModifierFlags::NSCommandKeyMask);
881 let function = modifiers.contains(NSEventModifierFlags::NSFunctionKeyMask);
882
883 Modifiers {
884 control,
885 alt,
886 shift,
887 platform: command,
888 function,
889 }
890 }
891 }
892
893 fn set_input_handler(&mut self, input_handler: PlatformInputHandler) {
894 self.0.as_ref().lock().input_handler = Some(input_handler);
895 }
896
897 fn take_input_handler(&mut self) -> Option<PlatformInputHandler> {
898 self.0.as_ref().lock().input_handler.take()
899 }
900
901 fn prompt(
902 &self,
903 level: PromptLevel,
904 msg: &str,
905 detail: Option<&str>,
906 answers: &[PromptButton],
907 ) -> Option<oneshot::Receiver<usize>> {
908 // macOs applies overrides to modal window buttons after they are added.
909 // Two most important for this logic are:
910 // * Buttons with "Cancel" title will be displayed as the last buttons in the modal
911 // * Last button added to the modal via `addButtonWithTitle` stays focused
912 // * Focused buttons react on "space"/" " keypresses
913 // * Usage of `keyEquivalent`, `makeFirstResponder` or `setInitialFirstResponder` does not change the focus
914 //
915 // See also https://developer.apple.com/documentation/appkit/nsalert/1524532-addbuttonwithtitle#discussion
916 // ```
917 // By default, the first button has a key equivalent of Return,
918 // any button with a title of “Cancel” has a key equivalent of Escape,
919 // 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).
920 // ```
921 //
922 // To avoid situations when the last element added is "Cancel" and it gets the focus
923 // (hence stealing both ESC and Space shortcuts), we find and add one non-Cancel button
924 // last, so it gets focus and a Space shortcut.
925 // This way, "Save this file? Yes/No/Cancel"-ish modals will get all three buttons mapped with a key.
926 let latest_non_cancel_label = answers
927 .iter()
928 .enumerate()
929 .rev()
930 .find(|(_, label)| !label.is_cancel())
931 .filter(|&(label_index, _)| label_index > 0);
932
933 unsafe {
934 let alert: id = msg_send![class!(NSAlert), alloc];
935 let alert: id = msg_send![alert, init];
936 let alert_style = match level {
937 PromptLevel::Info => 1,
938 PromptLevel::Warning => 0,
939 PromptLevel::Critical => 2,
940 };
941 let _: () = msg_send![alert, setAlertStyle: alert_style];
942 let _: () = msg_send![alert, setMessageText: ns_string(msg)];
943 if let Some(detail) = detail {
944 let _: () = msg_send![alert, setInformativeText: ns_string(detail)];
945 }
946
947 for (ix, answer) in answers
948 .iter()
949 .enumerate()
950 .filter(|&(ix, _)| Some(ix) != latest_non_cancel_label.map(|(ix, _)| ix))
951 {
952 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer.label())];
953 let _: () = msg_send![button, setTag: ix as NSInteger];
954
955 if answer.is_cancel() {
956 // Bind Escape Key to Cancel Button
957 if let Some(key) = std::char::from_u32(super::events::ESCAPE_KEY as u32) {
958 let _: () =
959 msg_send![button, setKeyEquivalent: ns_string(&key.to_string())];
960 }
961 }
962 }
963 if let Some((ix, answer)) = latest_non_cancel_label {
964 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer.label())];
965 let _: () = msg_send![button, setTag: ix as NSInteger];
966 }
967
968 let (done_tx, done_rx) = oneshot::channel();
969 let done_tx = Cell::new(Some(done_tx));
970 let block = ConcreteBlock::new(move |answer: NSInteger| {
971 if let Some(done_tx) = done_tx.take() {
972 let _ = done_tx.send(answer.try_into().unwrap());
973 }
974 });
975 let block = block.copy();
976 let native_window = self.0.lock().native_window;
977 let executor = self.0.lock().executor.clone();
978 executor
979 .spawn(async move {
980 let _: () = msg_send![
981 alert,
982 beginSheetModalForWindow: native_window
983 completionHandler: block
984 ];
985 })
986 .detach();
987
988 Some(done_rx)
989 }
990 }
991
992 fn activate(&self) {
993 let window = self.0.lock().native_window;
994 let executor = self.0.lock().executor.clone();
995 executor
996 .spawn(async move {
997 unsafe {
998 let _: () = msg_send![window, makeKeyAndOrderFront: nil];
999 }
1000 })
1001 .detach();
1002 }
1003
1004 fn is_active(&self) -> bool {
1005 unsafe { self.0.lock().native_window.isKeyWindow() == YES }
1006 }
1007
1008 // is_hovered is unused on macOS. See Window::is_window_hovered.
1009 fn is_hovered(&self) -> bool {
1010 false
1011 }
1012
1013 fn set_title(&mut self, title: &str) {
1014 unsafe {
1015 let app = NSApplication::sharedApplication(nil);
1016 let window = self.0.lock().native_window;
1017 let title = ns_string(title);
1018 let _: () = msg_send![app, changeWindowsItem:window title:title filename:false];
1019 let _: () = msg_send![window, setTitle: title];
1020 self.0.lock().move_traffic_light();
1021 }
1022 }
1023
1024 fn set_app_id(&mut self, _app_id: &str) {}
1025
1026 fn set_background_appearance(&self, background_appearance: WindowBackgroundAppearance) {
1027 let mut this = self.0.as_ref().lock();
1028 this.renderer
1029 .update_transparency(background_appearance != WindowBackgroundAppearance::Opaque);
1030
1031 let blur_radius = if background_appearance == WindowBackgroundAppearance::Blurred {
1032 80
1033 } else {
1034 0
1035 };
1036 let opaque = (background_appearance == WindowBackgroundAppearance::Opaque).to_objc();
1037
1038 unsafe {
1039 this.native_window.setOpaque_(opaque);
1040 // Shadows for transparent windows cause artifacts and performance issues
1041 this.native_window.setHasShadow_(opaque);
1042 let clear_color = if opaque == YES {
1043 NSColor::colorWithSRGBRed_green_blue_alpha_(nil, 0f64, 0f64, 0f64, 1f64)
1044 } else {
1045 NSColor::clearColor(nil)
1046 };
1047 this.native_window.setBackgroundColor_(clear_color);
1048 let window_number = this.native_window.windowNumber();
1049 CGSSetWindowBackgroundBlurRadius(CGSMainConnectionID(), window_number, blur_radius);
1050 }
1051 }
1052
1053 fn set_edited(&mut self, edited: bool) {
1054 unsafe {
1055 let window = self.0.lock().native_window;
1056 msg_send![window, setDocumentEdited: edited as BOOL]
1057 }
1058
1059 // Changing the document edited state resets the traffic light position,
1060 // so we have to move it again.
1061 self.0.lock().move_traffic_light();
1062 }
1063
1064 fn show_character_palette(&self) {
1065 let this = self.0.lock();
1066 let window = this.native_window;
1067 this.executor
1068 .spawn(async move {
1069 unsafe {
1070 let app = NSApplication::sharedApplication(nil);
1071 let _: () = msg_send![app, orderFrontCharacterPalette: window];
1072 }
1073 })
1074 .detach();
1075 }
1076
1077 fn minimize(&self) {
1078 let window = self.0.lock().native_window;
1079 unsafe {
1080 window.miniaturize_(nil);
1081 }
1082 }
1083
1084 fn zoom(&self) {
1085 let this = self.0.lock();
1086 let window = this.native_window;
1087 this.executor
1088 .spawn(async move {
1089 unsafe {
1090 window.zoom_(nil);
1091 }
1092 })
1093 .detach();
1094 }
1095
1096 fn toggle_fullscreen(&self) {
1097 let this = self.0.lock();
1098 let window = this.native_window;
1099 this.executor
1100 .spawn(async move {
1101 unsafe {
1102 window.toggleFullScreen_(nil);
1103 }
1104 })
1105 .detach();
1106 }
1107
1108 fn is_fullscreen(&self) -> bool {
1109 let this = self.0.lock();
1110 let window = this.native_window;
1111
1112 unsafe {
1113 window
1114 .styleMask()
1115 .contains(NSWindowStyleMask::NSFullScreenWindowMask)
1116 }
1117 }
1118
1119 fn on_request_frame(&self, callback: Box<dyn FnMut(RequestFrameOptions)>) {
1120 self.0.as_ref().lock().request_frame_callback = Some(callback);
1121 }
1122
1123 fn on_input(&self, callback: Box<dyn FnMut(PlatformInput) -> crate::DispatchEventResult>) {
1124 self.0.as_ref().lock().event_callback = Some(callback);
1125 }
1126
1127 fn on_active_status_change(&self, callback: Box<dyn FnMut(bool)>) {
1128 self.0.as_ref().lock().activate_callback = Some(callback);
1129 }
1130
1131 fn on_hover_status_change(&self, _: Box<dyn FnMut(bool)>) {}
1132
1133 fn on_resize(&self, callback: Box<dyn FnMut(Size<Pixels>, f32)>) {
1134 self.0.as_ref().lock().resize_callback = Some(callback);
1135 }
1136
1137 fn on_moved(&self, callback: Box<dyn FnMut()>) {
1138 self.0.as_ref().lock().moved_callback = Some(callback);
1139 }
1140
1141 fn on_should_close(&self, callback: Box<dyn FnMut() -> bool>) {
1142 self.0.as_ref().lock().should_close_callback = Some(callback);
1143 }
1144
1145 fn on_close(&self, callback: Box<dyn FnOnce()>) {
1146 self.0.as_ref().lock().close_callback = Some(callback);
1147 }
1148
1149 fn on_hit_test_window_control(&self, _callback: Box<dyn FnMut() -> Option<WindowControlArea>>) {
1150 unimplemented!()
1151 }
1152
1153 fn on_appearance_changed(&self, callback: Box<dyn FnMut()>) {
1154 self.0.lock().appearance_changed_callback = Some(callback);
1155 }
1156
1157 fn draw(&self, scene: &crate::Scene) {
1158 let mut this = self.0.lock();
1159 this.renderer.draw(scene);
1160 }
1161
1162 fn sprite_atlas(&self) -> Arc<dyn PlatformAtlas> {
1163 self.0.lock().renderer.sprite_atlas().clone()
1164 }
1165
1166 fn gpu_specs(&self) -> Option<crate::GpuSpecs> {
1167 None
1168 }
1169
1170 fn update_ime_position(&self, _bounds: Bounds<ScaledPixels>) {
1171 let executor = self.0.lock().executor.clone();
1172 executor
1173 .spawn(async move {
1174 unsafe {
1175 let input_context: id =
1176 msg_send![class!(NSTextInputContext), currentInputContext];
1177 if input_context.is_null() {
1178 return;
1179 }
1180 let _: () = msg_send![input_context, invalidateCharacterCoordinates];
1181 }
1182 })
1183 .detach()
1184 }
1185
1186 fn titlebar_double_click(&self) {
1187 let this = self.0.lock();
1188 let window = this.native_window;
1189 this.executor
1190 .spawn(async move {
1191 unsafe {
1192 let defaults: id = NSUserDefaults::standardUserDefaults();
1193 let domain = NSString::alloc(nil).init_str("NSGlobalDomain");
1194 let key = NSString::alloc(nil).init_str("AppleActionOnDoubleClick");
1195
1196 let dict: id = msg_send![defaults, persistentDomainForName: domain];
1197 let action: id = if !dict.is_null() {
1198 msg_send![dict, objectForKey: key]
1199 } else {
1200 nil
1201 };
1202
1203 let action_str = if !action.is_null() {
1204 CStr::from_ptr(NSString::UTF8String(action)).to_string_lossy()
1205 } else {
1206 "".into()
1207 };
1208
1209 match action_str.as_ref() {
1210 "Minimize" => {
1211 window.miniaturize_(nil);
1212 }
1213 "Maximize" => {
1214 window.zoom_(nil);
1215 }
1216 "Fill" => {
1217 // There is no documented API for "Fill" action, so we'll just zoom the window
1218 window.zoom_(nil);
1219 }
1220 _ => {
1221 window.zoom_(nil);
1222 }
1223 }
1224 }
1225 })
1226 .detach();
1227 }
1228}
1229
1230impl rwh::HasWindowHandle for MacWindow {
1231 fn window_handle(&self) -> Result<rwh::WindowHandle<'_>, rwh::HandleError> {
1232 // SAFETY: The AppKitWindowHandle is a wrapper around a pointer to an NSView
1233 unsafe {
1234 Ok(rwh::WindowHandle::borrow_raw(rwh::RawWindowHandle::AppKit(
1235 rwh::AppKitWindowHandle::new(self.0.lock().native_view.cast()),
1236 )))
1237 }
1238 }
1239}
1240
1241impl rwh::HasDisplayHandle for MacWindow {
1242 fn display_handle(&self) -> Result<rwh::DisplayHandle<'_>, rwh::HandleError> {
1243 // SAFETY: This is a no-op on macOS
1244 unsafe {
1245 Ok(rwh::DisplayHandle::borrow_raw(
1246 rwh::AppKitDisplayHandle::new().into(),
1247 ))
1248 }
1249 }
1250}
1251
1252fn get_scale_factor(native_window: id) -> f32 {
1253 let factor = unsafe {
1254 let screen: id = msg_send![native_window, screen];
1255 if screen.is_null() {
1256 return 1.0;
1257 }
1258 NSScreen::backingScaleFactor(screen) as f32
1259 };
1260
1261 // We are not certain what triggers this, but it seems that sometimes
1262 // this method would return 0 (https://github.com/zed-industries/zed/issues/6412)
1263 // It seems most likely that this would happen if the window has no screen
1264 // (if it is off-screen), though we'd expect to see viewDidChangeBackingProperties before
1265 // it was rendered for real.
1266 // Regardless, attempt to avoid the issue here.
1267 if factor == 0.0 { 2. } else { factor }
1268}
1269
1270unsafe fn get_window_state(object: &Object) -> Arc<Mutex<MacWindowState>> {
1271 unsafe {
1272 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1273 let rc1 = Arc::from_raw(raw as *mut Mutex<MacWindowState>);
1274 let rc2 = rc1.clone();
1275 mem::forget(rc1);
1276 rc2
1277 }
1278}
1279
1280unsafe fn drop_window_state(object: &Object) {
1281 unsafe {
1282 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1283 Arc::from_raw(raw as *mut Mutex<MacWindowState>);
1284 }
1285}
1286
1287extern "C" fn yes(_: &Object, _: Sel) -> BOOL {
1288 YES
1289}
1290
1291extern "C" fn dealloc_window(this: &Object, _: Sel) {
1292 unsafe {
1293 drop_window_state(this);
1294 let _: () = msg_send![super(this, class!(NSWindow)), dealloc];
1295 }
1296}
1297
1298extern "C" fn dealloc_view(this: &Object, _: Sel) {
1299 unsafe {
1300 drop_window_state(this);
1301 let _: () = msg_send![super(this, class!(NSView)), dealloc];
1302 }
1303}
1304
1305extern "C" fn handle_key_equivalent(this: &Object, _: Sel, native_event: id) -> BOOL {
1306 handle_key_event(this, native_event, true)
1307}
1308
1309extern "C" fn handle_key_down(this: &Object, _: Sel, native_event: id) {
1310 handle_key_event(this, native_event, false);
1311}
1312
1313extern "C" fn handle_key_up(this: &Object, _: Sel, native_event: id) {
1314 handle_key_event(this, native_event, false);
1315}
1316
1317// Things to test if you're modifying this method:
1318// U.S. layout:
1319// - The IME consumes characters like 'j' and 'k', which makes paging through `less` in
1320// the terminal behave incorrectly by default. This behavior should be patched by our
1321// IME integration
1322// - `alt-t` should open the tasks menu
1323// - In vim mode, this keybinding should work:
1324// ```
1325// {
1326// "context": "Editor && vim_mode == insert",
1327// "bindings": {"j j": "vim::NormalBefore"}
1328// }
1329// ```
1330// and typing 'j k' in insert mode with this keybinding should insert the two characters
1331// Brazilian layout:
1332// - `" space` should create an unmarked quote
1333// - `" backspace` should delete the marked quote
1334// - `" "`should create an unmarked quote and a second marked quote
1335// - `" up` should insert a quote, unmark it, and move up one line
1336// - `" cmd-down` should insert a quote, unmark it, and move to the end of the file
1337// - `cmd-ctrl-space` and clicking on an emoji should type it
1338// Czech (QWERTY) layout:
1339// - in vim mode `option-4` should go to end of line (same as $)
1340// Japanese (Romaji) layout:
1341// - type `a i left down up enter enter` should create an unmarked text "愛"
1342extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent: bool) -> BOOL {
1343 let window_state = unsafe { get_window_state(this) };
1344 let mut lock = window_state.as_ref().lock();
1345
1346 let window_height = lock.content_size().height;
1347 let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) };
1348
1349 let Some(event) = event else {
1350 return NO;
1351 };
1352
1353 let run_callback = |event: PlatformInput| -> BOOL {
1354 let mut callback = window_state.as_ref().lock().event_callback.take();
1355 let handled: BOOL = if let Some(callback) = callback.as_mut() {
1356 !callback(event).propagate as BOOL
1357 } else {
1358 NO
1359 };
1360 window_state.as_ref().lock().event_callback = callback;
1361 handled
1362 };
1363
1364 match event {
1365 PlatformInput::KeyDown(mut key_down_event) => {
1366 // For certain keystrokes, macOS will first dispatch a "key equivalent" event.
1367 // If that event isn't handled, it will then dispatch a "key down" event. GPUI
1368 // makes no distinction between these two types of events, so we need to ignore
1369 // the "key down" event if we've already just processed its "key equivalent" version.
1370 if key_equivalent {
1371 lock.last_key_equivalent = Some(key_down_event.clone());
1372 } else if lock.last_key_equivalent.take().as_ref() == Some(&key_down_event) {
1373 return NO;
1374 }
1375
1376 drop(lock);
1377
1378 let is_composing =
1379 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1380 .flatten()
1381 .is_some();
1382
1383 // If we're composing, send the key to the input handler first;
1384 // otherwise we only send to the input handler if we don't have a matching binding.
1385 // The input handler may call `do_command_by_selector` if it doesn't know how to handle
1386 // a key. If it does so, it will return YES so we won't send the key twice.
1387 // We also do this for non-printing keys (like arrow keys and escape) as the IME menu
1388 // may need them even if there is no marked text;
1389 // however we skip keys with control or the input handler adds control-characters to the buffer.
1390 // and keys with function, as the input handler swallows them.
1391 if is_composing
1392 || (key_down_event.keystroke.key_char.is_none()
1393 && !key_down_event.keystroke.modifiers.control
1394 && !key_down_event.keystroke.modifiers.function)
1395 {
1396 {
1397 let mut lock = window_state.as_ref().lock();
1398 lock.keystroke_for_do_command = Some(key_down_event.keystroke.clone());
1399 lock.do_command_handled.take();
1400 drop(lock);
1401 }
1402
1403 let handled: BOOL = unsafe {
1404 let input_context: id = msg_send![this, inputContext];
1405 msg_send![input_context, handleEvent: native_event]
1406 };
1407 window_state.as_ref().lock().keystroke_for_do_command.take();
1408 if let Some(handled) = window_state.as_ref().lock().do_command_handled.take() {
1409 return handled as BOOL;
1410 } else if handled == YES {
1411 return YES;
1412 }
1413
1414 let handled = run_callback(PlatformInput::KeyDown(key_down_event));
1415 return handled;
1416 }
1417
1418 let handled = run_callback(PlatformInput::KeyDown(key_down_event.clone()));
1419 if handled == YES {
1420 return YES;
1421 }
1422
1423 if key_down_event.is_held {
1424 if let Some(key_char) = key_down_event.keystroke.key_char.as_ref() {
1425 let handled = with_input_handler(&this, |input_handler| {
1426 if !input_handler.apple_press_and_hold_enabled() {
1427 input_handler.replace_text_in_range(None, &key_char);
1428 return YES;
1429 }
1430 NO
1431 });
1432 if handled == Some(YES) {
1433 return YES;
1434 }
1435 }
1436 }
1437
1438 // Don't send key equivalents to the input handler,
1439 // or macOS shortcuts like cmd-` will stop working.
1440 if key_equivalent {
1441 return NO;
1442 }
1443
1444 unsafe {
1445 let input_context: id = msg_send![this, inputContext];
1446 msg_send![input_context, handleEvent: native_event]
1447 }
1448 }
1449
1450 PlatformInput::KeyUp(_) => {
1451 drop(lock);
1452 run_callback(event)
1453 }
1454
1455 _ => NO,
1456 }
1457}
1458
1459extern "C" fn handle_view_event(this: &Object, _: Sel, native_event: id) {
1460 let window_state = unsafe { get_window_state(this) };
1461 let weak_window_state = Arc::downgrade(&window_state);
1462 let mut lock = window_state.as_ref().lock();
1463 let window_height = lock.content_size().height;
1464 let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) };
1465
1466 if let Some(mut event) = event {
1467 match &mut event {
1468 PlatformInput::MouseDown(
1469 event @ MouseDownEvent {
1470 button: MouseButton::Left,
1471 modifiers: Modifiers { control: true, .. },
1472 ..
1473 },
1474 ) => {
1475 // On mac, a ctrl-left click should be handled as a right click.
1476 *event = MouseDownEvent {
1477 button: MouseButton::Right,
1478 modifiers: Modifiers {
1479 control: false,
1480 ..event.modifiers
1481 },
1482 click_count: 1,
1483 ..*event
1484 };
1485 }
1486
1487 // Handles focusing click.
1488 PlatformInput::MouseDown(
1489 event @ MouseDownEvent {
1490 button: MouseButton::Left,
1491 ..
1492 },
1493 ) if (lock.first_mouse) => {
1494 *event = MouseDownEvent {
1495 first_mouse: true,
1496 ..*event
1497 };
1498 lock.first_mouse = false;
1499 }
1500
1501 // Because we map a ctrl-left_down to a right_down -> right_up let's ignore
1502 // the ctrl-left_up to avoid having a mismatch in button down/up events if the
1503 // user is still holding ctrl when releasing the left mouse button
1504 PlatformInput::MouseUp(
1505 event @ MouseUpEvent {
1506 button: MouseButton::Left,
1507 modifiers: Modifiers { control: true, .. },
1508 ..
1509 },
1510 ) => {
1511 *event = MouseUpEvent {
1512 button: MouseButton::Right,
1513 modifiers: Modifiers {
1514 control: false,
1515 ..event.modifiers
1516 },
1517 click_count: 1,
1518 ..*event
1519 };
1520 }
1521
1522 _ => {}
1523 };
1524
1525 match &event {
1526 PlatformInput::MouseDown(_) => {
1527 drop(lock);
1528 unsafe {
1529 let input_context: id = msg_send![this, inputContext];
1530 msg_send![input_context, handleEvent: native_event]
1531 }
1532 lock = window_state.as_ref().lock();
1533 }
1534 PlatformInput::MouseMove(
1535 event @ MouseMoveEvent {
1536 pressed_button: Some(_),
1537 ..
1538 },
1539 ) => {
1540 // Synthetic drag is used for selecting long buffer contents while buffer is being scrolled.
1541 // External file drag and drop is able to emit its own synthetic mouse events which will conflict
1542 // with these ones.
1543 if !lock.external_files_dragged {
1544 lock.synthetic_drag_counter += 1;
1545 let executor = lock.executor.clone();
1546 executor
1547 .spawn(synthetic_drag(
1548 weak_window_state,
1549 lock.synthetic_drag_counter,
1550 event.clone(),
1551 ))
1552 .detach();
1553 }
1554 }
1555
1556 PlatformInput::MouseUp(MouseUpEvent { .. }) => {
1557 lock.synthetic_drag_counter += 1;
1558 }
1559
1560 PlatformInput::ModifiersChanged(ModifiersChangedEvent { modifiers }) => {
1561 // Only raise modifiers changed event when they have actually changed
1562 if let Some(PlatformInput::ModifiersChanged(ModifiersChangedEvent {
1563 modifiers: prev_modifiers,
1564 })) = &lock.previous_modifiers_changed_event
1565 {
1566 if prev_modifiers == modifiers {
1567 return;
1568 }
1569 }
1570
1571 lock.previous_modifiers_changed_event = Some(event.clone());
1572 }
1573
1574 _ => {}
1575 }
1576
1577 if let Some(mut callback) = lock.event_callback.take() {
1578 drop(lock);
1579 callback(event);
1580 window_state.lock().event_callback = Some(callback);
1581 }
1582 }
1583}
1584
1585extern "C" fn window_did_change_occlusion_state(this: &Object, _: Sel, _: id) {
1586 let window_state = unsafe { get_window_state(this) };
1587 let lock = &mut *window_state.lock();
1588 unsafe {
1589 if lock
1590 .native_window
1591 .occlusionState()
1592 .contains(NSWindowOcclusionState::NSWindowOcclusionStateVisible)
1593 {
1594 lock.start_display_link();
1595 } else {
1596 lock.stop_display_link();
1597 }
1598 }
1599}
1600
1601extern "C" fn window_did_resize(this: &Object, _: Sel, _: id) {
1602 let window_state = unsafe { get_window_state(this) };
1603 window_state.as_ref().lock().move_traffic_light();
1604}
1605
1606extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) {
1607 let window_state = unsafe { get_window_state(this) };
1608 let mut lock = window_state.as_ref().lock();
1609 lock.fullscreen_restore_bounds = lock.bounds();
1610
1611 let min_version = NSOperatingSystemVersion::new(15, 3, 0);
1612
1613 if is_macos_version_at_least(min_version) {
1614 unsafe {
1615 lock.native_window.setTitlebarAppearsTransparent_(NO);
1616 }
1617 }
1618}
1619
1620extern "C" fn window_will_exit_fullscreen(this: &Object, _: Sel, _: id) {
1621 let window_state = unsafe { get_window_state(this) };
1622 let mut lock = window_state.as_ref().lock();
1623
1624 let min_version = NSOperatingSystemVersion::new(15, 3, 0);
1625
1626 if is_macos_version_at_least(min_version) && lock.transparent_titlebar {
1627 unsafe {
1628 lock.native_window.setTitlebarAppearsTransparent_(YES);
1629 }
1630 }
1631}
1632
1633pub(crate) fn is_macos_version_at_least(version: NSOperatingSystemVersion) -> bool {
1634 unsafe { NSProcessInfo::processInfo(nil).isOperatingSystemAtLeastVersion(version) }
1635}
1636
1637extern "C" fn window_did_move(this: &Object, _: Sel, _: id) {
1638 let window_state = unsafe { get_window_state(this) };
1639 let mut lock = window_state.as_ref().lock();
1640 if let Some(mut callback) = lock.moved_callback.take() {
1641 drop(lock);
1642 callback();
1643 window_state.lock().moved_callback = Some(callback);
1644 }
1645}
1646
1647extern "C" fn window_did_change_screen(this: &Object, _: Sel, _: id) {
1648 let window_state = unsafe { get_window_state(this) };
1649 let mut lock = window_state.as_ref().lock();
1650 lock.start_display_link();
1651}
1652
1653extern "C" fn window_did_change_key_status(this: &Object, selector: Sel, _: id) {
1654 let window_state = unsafe { get_window_state(this) };
1655 let lock = window_state.lock();
1656 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1657
1658 // When opening a pop-up while the application isn't active, Cocoa sends a spurious
1659 // `windowDidBecomeKey` message to the previous key window even though that window
1660 // isn't actually key. This causes a bug if the application is later activated while
1661 // the pop-up is still open, making it impossible to activate the previous key window
1662 // even if the pop-up gets closed. The only way to activate it again is to de-activate
1663 // the app and re-activate it, which is a pretty bad UX.
1664 // The following code detects the spurious event and invokes `resignKeyWindow`:
1665 // in theory, we're not supposed to invoke this method manually but it balances out
1666 // the spurious `becomeKeyWindow` event and helps us work around that bug.
1667 if selector == sel!(windowDidBecomeKey:) && !is_active {
1668 unsafe {
1669 let _: () = msg_send![lock.native_window, resignKeyWindow];
1670 return;
1671 }
1672 }
1673
1674 let executor = lock.executor.clone();
1675 drop(lock);
1676 executor
1677 .spawn(async move {
1678 let mut lock = window_state.as_ref().lock();
1679 if let Some(mut callback) = lock.activate_callback.take() {
1680 drop(lock);
1681 callback(is_active);
1682 window_state.lock().activate_callback = Some(callback);
1683 };
1684 })
1685 .detach();
1686}
1687
1688extern "C" fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
1689 let window_state = unsafe { get_window_state(this) };
1690 let mut lock = window_state.as_ref().lock();
1691 if let Some(mut callback) = lock.should_close_callback.take() {
1692 drop(lock);
1693 let should_close = callback();
1694 window_state.lock().should_close_callback = Some(callback);
1695 should_close as BOOL
1696 } else {
1697 YES
1698 }
1699}
1700
1701extern "C" fn close_window(this: &Object, _: Sel) {
1702 unsafe {
1703 let close_callback = {
1704 let window_state = get_window_state(this);
1705 let mut lock = window_state.as_ref().lock();
1706 lock.close_callback.take()
1707 };
1708
1709 if let Some(callback) = close_callback {
1710 callback();
1711 }
1712
1713 let _: () = msg_send![super(this, class!(NSWindow)), close];
1714 }
1715}
1716
1717extern "C" fn make_backing_layer(this: &Object, _: Sel) -> id {
1718 let window_state = unsafe { get_window_state(this) };
1719 let window_state = window_state.as_ref().lock();
1720 window_state.renderer.layer_ptr() as id
1721}
1722
1723extern "C" fn view_did_change_backing_properties(this: &Object, _: Sel) {
1724 let window_state = unsafe { get_window_state(this) };
1725 let mut lock = window_state.as_ref().lock();
1726
1727 let scale_factor = lock.scale_factor();
1728 let size = lock.content_size();
1729 let drawable_size = size.to_device_pixels(scale_factor);
1730 unsafe {
1731 let _: () = msg_send![
1732 lock.renderer.layer(),
1733 setContentsScale: scale_factor as f64
1734 ];
1735 }
1736
1737 lock.renderer.update_drawable_size(drawable_size);
1738
1739 if let Some(mut callback) = lock.resize_callback.take() {
1740 let content_size = lock.content_size();
1741 let scale_factor = lock.scale_factor();
1742 drop(lock);
1743 callback(content_size, scale_factor);
1744 window_state.as_ref().lock().resize_callback = Some(callback);
1745 };
1746}
1747
1748extern "C" fn set_frame_size(this: &Object, _: Sel, size: NSSize) {
1749 let window_state = unsafe { get_window_state(this) };
1750 let mut lock = window_state.as_ref().lock();
1751
1752 let new_size = Size::<Pixels>::from(size);
1753 if lock.content_size() == new_size {
1754 return;
1755 }
1756
1757 unsafe {
1758 let _: () = msg_send![super(this, class!(NSView)), setFrameSize: size];
1759 }
1760
1761 let scale_factor = lock.scale_factor();
1762 let drawable_size = new_size.to_device_pixels(scale_factor);
1763 lock.renderer.update_drawable_size(drawable_size);
1764
1765 if let Some(mut callback) = lock.resize_callback.take() {
1766 let content_size = lock.content_size();
1767 let scale_factor = lock.scale_factor();
1768 drop(lock);
1769 callback(content_size, scale_factor);
1770 window_state.lock().resize_callback = Some(callback);
1771 };
1772}
1773
1774extern "C" fn display_layer(this: &Object, _: Sel, _: id) {
1775 let window_state = unsafe { get_window_state(this) };
1776 let mut lock = window_state.lock();
1777 if let Some(mut callback) = lock.request_frame_callback.take() {
1778 #[cfg(not(feature = "macos-blade"))]
1779 lock.renderer.set_presents_with_transaction(true);
1780 lock.stop_display_link();
1781 drop(lock);
1782 callback(Default::default());
1783
1784 let mut lock = window_state.lock();
1785 lock.request_frame_callback = Some(callback);
1786 #[cfg(not(feature = "macos-blade"))]
1787 lock.renderer.set_presents_with_transaction(false);
1788 lock.start_display_link();
1789 }
1790}
1791
1792unsafe extern "C" fn step(view: *mut c_void) {
1793 let view = view as id;
1794 let window_state = unsafe { get_window_state(&*view) };
1795 let mut lock = window_state.lock();
1796
1797 if let Some(mut callback) = lock.request_frame_callback.take() {
1798 drop(lock);
1799 callback(Default::default());
1800 window_state.lock().request_frame_callback = Some(callback);
1801 }
1802}
1803
1804extern "C" fn valid_attributes_for_marked_text(_: &Object, _: Sel) -> id {
1805 unsafe { msg_send![class!(NSArray), array] }
1806}
1807
1808extern "C" fn has_marked_text(this: &Object, _: Sel) -> BOOL {
1809 let has_marked_text_result =
1810 with_input_handler(this, |input_handler| input_handler.marked_text_range()).flatten();
1811
1812 has_marked_text_result.is_some() as BOOL
1813}
1814
1815extern "C" fn marked_range(this: &Object, _: Sel) -> NSRange {
1816 let marked_range_result =
1817 with_input_handler(this, |input_handler| input_handler.marked_text_range()).flatten();
1818
1819 marked_range_result.map_or(NSRange::invalid(), |range| range.into())
1820}
1821
1822extern "C" fn selected_range(this: &Object, _: Sel) -> NSRange {
1823 let selected_range_result = with_input_handler(this, |input_handler| {
1824 input_handler.selected_text_range(false)
1825 })
1826 .flatten();
1827
1828 selected_range_result.map_or(NSRange::invalid(), |selection| selection.range.into())
1829}
1830
1831extern "C" fn first_rect_for_character_range(
1832 this: &Object,
1833 _: Sel,
1834 range: NSRange,
1835 _: id,
1836) -> NSRect {
1837 let frame = get_frame(this);
1838 with_input_handler(this, |input_handler| {
1839 input_handler.bounds_for_range(range.to_range()?)
1840 })
1841 .flatten()
1842 .map_or(
1843 NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)),
1844 |bounds| {
1845 NSRect::new(
1846 NSPoint::new(
1847 frame.origin.x + bounds.origin.x.0 as f64,
1848 frame.origin.y + frame.size.height
1849 - bounds.origin.y.0 as f64
1850 - bounds.size.height.0 as f64,
1851 ),
1852 NSSize::new(bounds.size.width.0 as f64, bounds.size.height.0 as f64),
1853 )
1854 },
1855 )
1856}
1857
1858fn get_frame(this: &Object) -> NSRect {
1859 unsafe {
1860 let state = get_window_state(this);
1861 let lock = state.lock();
1862 let mut frame = NSWindow::frame(lock.native_window);
1863 let content_layout_rect: CGRect = msg_send![lock.native_window, contentLayoutRect];
1864 let style_mask: NSWindowStyleMask = msg_send![lock.native_window, styleMask];
1865 if !style_mask.contains(NSWindowStyleMask::NSFullSizeContentViewWindowMask) {
1866 frame.origin.y -= frame.size.height - content_layout_rect.size.height;
1867 }
1868 frame
1869 }
1870}
1871
1872extern "C" fn insert_text(this: &Object, _: Sel, text: id, replacement_range: NSRange) {
1873 unsafe {
1874 let is_attributed_string: BOOL =
1875 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1876 let text: id = if is_attributed_string == YES {
1877 msg_send![text, string]
1878 } else {
1879 text
1880 };
1881
1882 let text = text.to_str();
1883 let replacement_range = replacement_range.to_range();
1884 with_input_handler(this, |input_handler| {
1885 input_handler.replace_text_in_range(replacement_range, &text)
1886 });
1887 }
1888}
1889
1890extern "C" fn set_marked_text(
1891 this: &Object,
1892 _: Sel,
1893 text: id,
1894 selected_range: NSRange,
1895 replacement_range: NSRange,
1896) {
1897 unsafe {
1898 let is_attributed_string: BOOL =
1899 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1900 let text: id = if is_attributed_string == YES {
1901 msg_send![text, string]
1902 } else {
1903 text
1904 };
1905 let selected_range = selected_range.to_range();
1906 let replacement_range = replacement_range.to_range();
1907 let text = text.to_str();
1908 with_input_handler(this, |input_handler| {
1909 input_handler.replace_and_mark_text_in_range(replacement_range, &text, selected_range)
1910 });
1911 }
1912}
1913extern "C" fn unmark_text(this: &Object, _: Sel) {
1914 with_input_handler(this, |input_handler| input_handler.unmark_text());
1915}
1916
1917extern "C" fn attributed_substring_for_proposed_range(
1918 this: &Object,
1919 _: Sel,
1920 range: NSRange,
1921 actual_range: *mut c_void,
1922) -> id {
1923 with_input_handler(this, |input_handler| {
1924 let range = range.to_range()?;
1925 if range.is_empty() {
1926 return None;
1927 }
1928 let mut adjusted: Option<Range<usize>> = None;
1929
1930 let selected_text = input_handler.text_for_range(range.clone(), &mut adjusted)?;
1931 if let Some(adjusted) = adjusted {
1932 if adjusted != range {
1933 unsafe { (actual_range as *mut NSRange).write(NSRange::from(adjusted)) };
1934 }
1935 }
1936 unsafe {
1937 let string: id = msg_send![class!(NSAttributedString), alloc];
1938 let string: id = msg_send![string, initWithString: ns_string(&selected_text)];
1939 Some(string)
1940 }
1941 })
1942 .flatten()
1943 .unwrap_or(nil)
1944}
1945
1946// We ignore which selector it asks us to do because the user may have
1947// bound the shortcut to something else.
1948extern "C" fn do_command_by_selector(this: &Object, _: Sel, _: Sel) {
1949 let state = unsafe { get_window_state(this) };
1950 let mut lock = state.as_ref().lock();
1951 let keystroke = lock.keystroke_for_do_command.take();
1952 let mut event_callback = lock.event_callback.take();
1953 drop(lock);
1954
1955 if let Some((keystroke, mut callback)) = keystroke.zip(event_callback.as_mut()) {
1956 let handled = (callback)(PlatformInput::KeyDown(KeyDownEvent {
1957 keystroke,
1958 is_held: false,
1959 }));
1960 state.as_ref().lock().do_command_handled = Some(!handled.propagate);
1961 }
1962
1963 state.as_ref().lock().event_callback = event_callback;
1964}
1965
1966extern "C" fn view_did_change_effective_appearance(this: &Object, _: Sel) {
1967 unsafe {
1968 let state = get_window_state(this);
1969 let mut lock = state.as_ref().lock();
1970 if let Some(mut callback) = lock.appearance_changed_callback.take() {
1971 drop(lock);
1972 callback();
1973 state.lock().appearance_changed_callback = Some(callback);
1974 }
1975 }
1976}
1977
1978extern "C" fn accepts_first_mouse(this: &Object, _: Sel, _: id) -> BOOL {
1979 let window_state = unsafe { get_window_state(this) };
1980 let mut lock = window_state.as_ref().lock();
1981 lock.first_mouse = true;
1982 YES
1983}
1984
1985extern "C" fn character_index_for_point(this: &Object, _: Sel, position: NSPoint) -> u64 {
1986 let position = screen_point_to_gpui_point(this, position);
1987 with_input_handler(this, |input_handler| {
1988 input_handler.character_index_for_point(position)
1989 })
1990 .flatten()
1991 .map(|index| index as u64)
1992 .unwrap_or(NSNotFound as u64)
1993}
1994
1995fn screen_point_to_gpui_point(this: &Object, position: NSPoint) -> Point<Pixels> {
1996 let frame = get_frame(this);
1997 let window_x = position.x - frame.origin.x;
1998 let window_y = frame.size.height - (position.y - frame.origin.y);
1999 let position = point(px(window_x as f32), px(window_y as f32));
2000 position
2001}
2002
2003extern "C" fn dragging_entered(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
2004 let window_state = unsafe { get_window_state(this) };
2005 let position = drag_event_position(&window_state, dragging_info);
2006 let paths = external_paths_from_event(dragging_info);
2007 if let Some(event) =
2008 paths.map(|paths| PlatformInput::FileDrop(FileDropEvent::Entered { position, paths }))
2009 {
2010 if send_new_event(&window_state, event) {
2011 window_state.lock().external_files_dragged = true;
2012 return NSDragOperationCopy;
2013 }
2014 }
2015 NSDragOperationNone
2016}
2017
2018extern "C" fn dragging_updated(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
2019 let window_state = unsafe { get_window_state(this) };
2020 let position = drag_event_position(&window_state, dragging_info);
2021 if send_new_event(
2022 &window_state,
2023 PlatformInput::FileDrop(FileDropEvent::Pending { position }),
2024 ) {
2025 NSDragOperationCopy
2026 } else {
2027 NSDragOperationNone
2028 }
2029}
2030
2031extern "C" fn dragging_exited(this: &Object, _: Sel, _: id) {
2032 let window_state = unsafe { get_window_state(this) };
2033 send_new_event(
2034 &window_state,
2035 PlatformInput::FileDrop(FileDropEvent::Exited),
2036 );
2037 window_state.lock().external_files_dragged = false;
2038}
2039
2040extern "C" fn perform_drag_operation(this: &Object, _: Sel, dragging_info: id) -> BOOL {
2041 let window_state = unsafe { get_window_state(this) };
2042 let position = drag_event_position(&window_state, dragging_info);
2043 send_new_event(
2044 &window_state,
2045 PlatformInput::FileDrop(FileDropEvent::Submit { position }),
2046 )
2047 .to_objc()
2048}
2049
2050fn external_paths_from_event(dragging_info: *mut Object) -> Option<ExternalPaths> {
2051 let mut paths = SmallVec::new();
2052 let pasteboard: id = unsafe { msg_send![dragging_info, draggingPasteboard] };
2053 let filenames = unsafe { NSPasteboard::propertyListForType(pasteboard, NSFilenamesPboardType) };
2054 if filenames == nil {
2055 return None;
2056 }
2057 for file in unsafe { filenames.iter() } {
2058 let path = unsafe {
2059 let f = NSString::UTF8String(file);
2060 CStr::from_ptr(f).to_string_lossy().into_owned()
2061 };
2062 paths.push(PathBuf::from(path))
2063 }
2064 Some(ExternalPaths(paths))
2065}
2066
2067extern "C" fn conclude_drag_operation(this: &Object, _: Sel, _: id) {
2068 let window_state = unsafe { get_window_state(this) };
2069 send_new_event(
2070 &window_state,
2071 PlatformInput::FileDrop(FileDropEvent::Exited),
2072 );
2073}
2074
2075async fn synthetic_drag(
2076 window_state: Weak<Mutex<MacWindowState>>,
2077 drag_id: usize,
2078 event: MouseMoveEvent,
2079) {
2080 loop {
2081 Timer::after(Duration::from_millis(16)).await;
2082 if let Some(window_state) = window_state.upgrade() {
2083 let mut lock = window_state.lock();
2084 if lock.synthetic_drag_counter == drag_id {
2085 if let Some(mut callback) = lock.event_callback.take() {
2086 drop(lock);
2087 callback(PlatformInput::MouseMove(event.clone()));
2088 window_state.lock().event_callback = Some(callback);
2089 }
2090 } else {
2091 break;
2092 }
2093 }
2094 }
2095}
2096
2097fn send_new_event(window_state_lock: &Mutex<MacWindowState>, e: PlatformInput) -> bool {
2098 let window_state = window_state_lock.lock().event_callback.take();
2099 if let Some(mut callback) = window_state {
2100 callback(e);
2101 window_state_lock.lock().event_callback = Some(callback);
2102 true
2103 } else {
2104 false
2105 }
2106}
2107
2108fn drag_event_position(window_state: &Mutex<MacWindowState>, dragging_info: id) -> Point<Pixels> {
2109 let drag_location: NSPoint = unsafe { msg_send![dragging_info, draggingLocation] };
2110 convert_mouse_position(drag_location, window_state.lock().content_size().height)
2111}
2112
2113fn with_input_handler<F, R>(window: &Object, f: F) -> Option<R>
2114where
2115 F: FnOnce(&mut PlatformInputHandler) -> R,
2116{
2117 let window_state = unsafe { get_window_state(window) };
2118 let mut lock = window_state.as_ref().lock();
2119 if let Some(mut input_handler) = lock.input_handler.take() {
2120 drop(lock);
2121 let result = f(&mut input_handler);
2122 window_state.lock().input_handler = Some(input_handler);
2123 Some(result)
2124 } else {
2125 None
2126 }
2127}
2128
2129unsafe fn display_id_for_screen(screen: id) -> CGDirectDisplayID {
2130 unsafe {
2131 let device_description = NSScreen::deviceDescription(screen);
2132 let screen_number_key: id = NSString::alloc(nil).init_str("NSScreenNumber");
2133 let screen_number = device_description.objectForKey_(screen_number_key);
2134 let screen_number: NSUInteger = msg_send![screen_number, unsignedIntegerValue];
2135 screen_number as CGDirectDisplayID
2136 }
2137}