1use super::{global_bounds_from_ns_rect, ns_string, renderer, MacDisplay, NSRange};
2use crate::{
3 global_bounds_to_ns_rect, platform::PlatformInputHandler, point, px, size, AnyWindowHandle,
4 Bounds, DisplayLink, ExternalPaths, FileDropEvent, ForegroundExecutor, GlobalPixels,
5 KeyDownEvent, Keystroke, Modifiers, ModifiersChangedEvent, MouseButton, MouseDownEvent,
6 MouseMoveEvent, MouseUpEvent, Pixels, PlatformAtlas, PlatformDisplay, PlatformInput,
7 PlatformWindow, Point, PromptLevel, Size, Timer, WindowAppearance, WindowKind, WindowParams,
8};
9use block::ConcreteBlock;
10use cocoa::{
11 appkit::{
12 CGPoint, NSApplication, NSBackingStoreBuffered, NSEventModifierFlags,
13 NSFilenamesPboardType, NSPasteboard, NSScreen, NSView, NSViewHeightSizable,
14 NSViewWidthSizable, NSWindow, NSWindowButton, NSWindowCollectionBehavior,
15 NSWindowOcclusionState, NSWindowStyleMask, NSWindowTitleVisibility,
16 },
17 base::{id, nil},
18 foundation::{
19 NSArray, NSAutoreleasePool, NSDictionary, NSFastEnumeration, NSInteger, NSPoint, NSRect,
20 NSSize, NSString, NSUInteger,
21 },
22};
23use core_graphics::display::{CGDirectDisplayID, CGRect};
24use ctor::ctor;
25use futures::channel::oneshot;
26use objc::{
27 class,
28 declare::ClassDecl,
29 msg_send,
30 runtime::{Class, Object, Protocol, Sel, BOOL, NO, YES},
31 sel, sel_impl,
32};
33use parking_lot::Mutex;
34use raw_window_handle::{
35 AppKitDisplayHandle, AppKitWindowHandle, DisplayHandle, HasDisplayHandle, HasWindowHandle,
36 RawWindowHandle, WindowHandle,
37};
38use smallvec::SmallVec;
39use std::{
40 any::Any,
41 cell::Cell,
42 ffi::{c_void, CStr},
43 mem,
44 ops::Range,
45 os::raw::c_char,
46 path::PathBuf,
47 ptr::{self, NonNull},
48 rc::Rc,
49 sync::{Arc, Weak},
50 time::Duration,
51};
52use util::ResultExt;
53
54const WINDOW_STATE_IVAR: &str = "windowState";
55
56static mut WINDOW_CLASS: *const Class = ptr::null();
57static mut PANEL_CLASS: *const Class = ptr::null();
58static mut VIEW_CLASS: *const Class = ptr::null();
59
60#[allow(non_upper_case_globals)]
61const NSWindowStyleMaskNonactivatingPanel: NSWindowStyleMask =
62 unsafe { NSWindowStyleMask::from_bits_unchecked(1 << 7) };
63#[allow(non_upper_case_globals)]
64const NSNormalWindowLevel: NSInteger = 0;
65#[allow(non_upper_case_globals)]
66const NSPopUpWindowLevel: NSInteger = 101;
67#[allow(non_upper_case_globals)]
68const NSTrackingMouseEnteredAndExited: NSUInteger = 0x01;
69#[allow(non_upper_case_globals)]
70const NSTrackingMouseMoved: NSUInteger = 0x02;
71#[allow(non_upper_case_globals)]
72const NSTrackingActiveAlways: NSUInteger = 0x80;
73#[allow(non_upper_case_globals)]
74const NSTrackingInVisibleRect: NSUInteger = 0x200;
75#[allow(non_upper_case_globals)]
76const NSWindowAnimationBehaviorUtilityWindow: NSInteger = 4;
77#[allow(non_upper_case_globals)]
78const NSViewLayerContentsRedrawDuringViewResize: NSInteger = 2;
79// https://developer.apple.com/documentation/appkit/nsdragoperation
80type NSDragOperation = NSUInteger;
81#[allow(non_upper_case_globals)]
82const NSDragOperationNone: NSDragOperation = 0;
83#[allow(non_upper_case_globals)]
84const NSDragOperationCopy: NSDragOperation = 1;
85
86#[ctor]
87unsafe fn build_classes() {
88 WINDOW_CLASS = build_window_class("GPUIWindow", class!(NSWindow));
89 PANEL_CLASS = build_window_class("GPUIPanel", class!(NSPanel));
90 VIEW_CLASS = {
91 let mut decl = ClassDecl::new("GPUIView", class!(NSView)).unwrap();
92 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
93
94 decl.add_method(sel!(dealloc), dealloc_view as extern "C" fn(&Object, Sel));
95
96 decl.add_method(
97 sel!(performKeyEquivalent:),
98 handle_key_equivalent as extern "C" fn(&Object, Sel, id) -> BOOL,
99 );
100 decl.add_method(
101 sel!(keyDown:),
102 handle_key_down as extern "C" fn(&Object, Sel, id),
103 );
104 decl.add_method(
105 sel!(mouseDown:),
106 handle_view_event as extern "C" fn(&Object, Sel, id),
107 );
108 decl.add_method(
109 sel!(mouseUp:),
110 handle_view_event as extern "C" fn(&Object, Sel, id),
111 );
112 decl.add_method(
113 sel!(rightMouseDown:),
114 handle_view_event as extern "C" fn(&Object, Sel, id),
115 );
116 decl.add_method(
117 sel!(rightMouseUp:),
118 handle_view_event as extern "C" fn(&Object, Sel, id),
119 );
120 decl.add_method(
121 sel!(otherMouseDown:),
122 handle_view_event as extern "C" fn(&Object, Sel, id),
123 );
124 decl.add_method(
125 sel!(otherMouseUp:),
126 handle_view_event as extern "C" fn(&Object, Sel, id),
127 );
128 decl.add_method(
129 sel!(mouseMoved:),
130 handle_view_event as extern "C" fn(&Object, Sel, id),
131 );
132 decl.add_method(
133 sel!(mouseExited:),
134 handle_view_event as extern "C" fn(&Object, Sel, id),
135 );
136 decl.add_method(
137 sel!(mouseDragged:),
138 handle_view_event as extern "C" fn(&Object, Sel, id),
139 );
140 decl.add_method(
141 sel!(scrollWheel:),
142 handle_view_event as extern "C" fn(&Object, Sel, id),
143 );
144 decl.add_method(
145 sel!(flagsChanged:),
146 handle_view_event as extern "C" fn(&Object, Sel, id),
147 );
148 decl.add_method(
149 sel!(cancelOperation:),
150 cancel_operation as extern "C" fn(&Object, Sel, id),
151 );
152
153 decl.add_method(
154 sel!(makeBackingLayer),
155 make_backing_layer as extern "C" fn(&Object, Sel) -> id,
156 );
157
158 decl.add_protocol(Protocol::get("CALayerDelegate").unwrap());
159 decl.add_method(
160 sel!(viewDidChangeBackingProperties),
161 view_did_change_backing_properties as extern "C" fn(&Object, Sel),
162 );
163 decl.add_method(
164 sel!(setFrameSize:),
165 set_frame_size as extern "C" fn(&Object, Sel, NSSize),
166 );
167 decl.add_method(
168 sel!(displayLayer:),
169 display_layer as extern "C" fn(&Object, Sel, id),
170 );
171
172 decl.add_protocol(Protocol::get("NSTextInputClient").unwrap());
173 decl.add_method(
174 sel!(validAttributesForMarkedText),
175 valid_attributes_for_marked_text as extern "C" fn(&Object, Sel) -> id,
176 );
177 decl.add_method(
178 sel!(hasMarkedText),
179 has_marked_text as extern "C" fn(&Object, Sel) -> BOOL,
180 );
181 decl.add_method(
182 sel!(markedRange),
183 marked_range as extern "C" fn(&Object, Sel) -> NSRange,
184 );
185 decl.add_method(
186 sel!(selectedRange),
187 selected_range as extern "C" fn(&Object, Sel) -> NSRange,
188 );
189 decl.add_method(
190 sel!(firstRectForCharacterRange:actualRange:),
191 first_rect_for_character_range as extern "C" fn(&Object, Sel, NSRange, id) -> NSRect,
192 );
193 decl.add_method(
194 sel!(insertText:replacementRange:),
195 insert_text as extern "C" fn(&Object, Sel, id, NSRange),
196 );
197 decl.add_method(
198 sel!(setMarkedText:selectedRange:replacementRange:),
199 set_marked_text as extern "C" fn(&Object, Sel, id, NSRange, NSRange),
200 );
201 decl.add_method(sel!(unmarkText), unmark_text as extern "C" fn(&Object, Sel));
202 decl.add_method(
203 sel!(attributedSubstringForProposedRange:actualRange:),
204 attributed_substring_for_proposed_range
205 as extern "C" fn(&Object, Sel, NSRange, *mut c_void) -> id,
206 );
207 decl.add_method(
208 sel!(viewDidChangeEffectiveAppearance),
209 view_did_change_effective_appearance as extern "C" fn(&Object, Sel),
210 );
211
212 // Suppress beep on keystrokes with modifier keys.
213 decl.add_method(
214 sel!(doCommandBySelector:),
215 do_command_by_selector as extern "C" fn(&Object, Sel, Sel),
216 );
217
218 decl.add_method(
219 sel!(acceptsFirstMouse:),
220 accepts_first_mouse as extern "C" fn(&Object, Sel, id) -> BOOL,
221 );
222
223 decl.register()
224 };
225}
226
227pub(crate) fn convert_mouse_position(position: NSPoint, window_height: Pixels) -> Point<Pixels> {
228 point(
229 px(position.x as f32),
230 // MacOS screen coordinates are relative to bottom left
231 window_height - px(position.y as f32),
232 )
233}
234
235unsafe fn build_window_class(name: &'static str, superclass: &Class) -> *const Class {
236 let mut decl = ClassDecl::new(name, superclass).unwrap();
237 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
238 decl.add_method(sel!(dealloc), dealloc_window as extern "C" fn(&Object, Sel));
239 decl.add_method(
240 sel!(canBecomeMainWindow),
241 yes as extern "C" fn(&Object, Sel) -> BOOL,
242 );
243 decl.add_method(
244 sel!(canBecomeKeyWindow),
245 yes as extern "C" fn(&Object, Sel) -> BOOL,
246 );
247 decl.add_method(
248 sel!(windowDidResize:),
249 window_did_resize as extern "C" fn(&Object, Sel, id),
250 );
251 decl.add_method(
252 sel!(windowDidChangeOcclusionState:),
253 window_did_change_occlusion_state as extern "C" fn(&Object, Sel, id),
254 );
255 decl.add_method(
256 sel!(windowWillEnterFullScreen:),
257 window_will_enter_fullscreen as extern "C" fn(&Object, Sel, id),
258 );
259 decl.add_method(
260 sel!(windowWillExitFullScreen:),
261 window_will_exit_fullscreen as extern "C" fn(&Object, Sel, id),
262 );
263 decl.add_method(
264 sel!(windowDidMove:),
265 window_did_move as extern "C" fn(&Object, Sel, id),
266 );
267 decl.add_method(
268 sel!(windowDidChangeScreen:),
269 window_did_change_screen as extern "C" fn(&Object, Sel, id),
270 );
271 decl.add_method(
272 sel!(windowDidBecomeKey:),
273 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
274 );
275 decl.add_method(
276 sel!(windowDidResignKey:),
277 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
278 );
279 decl.add_method(
280 sel!(windowShouldClose:),
281 window_should_close as extern "C" fn(&Object, Sel, id) -> BOOL,
282 );
283
284 decl.add_method(sel!(close), close_window as extern "C" fn(&Object, Sel));
285
286 decl.add_method(
287 sel!(draggingEntered:),
288 dragging_entered as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
289 );
290 decl.add_method(
291 sel!(draggingUpdated:),
292 dragging_updated as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
293 );
294 decl.add_method(
295 sel!(draggingExited:),
296 dragging_exited as extern "C" fn(&Object, Sel, id),
297 );
298 decl.add_method(
299 sel!(performDragOperation:),
300 perform_drag_operation as extern "C" fn(&Object, Sel, id) -> BOOL,
301 );
302 decl.add_method(
303 sel!(concludeDragOperation:),
304 conclude_drag_operation as extern "C" fn(&Object, Sel, id),
305 );
306
307 decl.register()
308}
309
310#[allow(clippy::enum_variant_names)]
311enum ImeInput {
312 InsertText(String, Option<Range<usize>>),
313 SetMarkedText(String, Option<Range<usize>>, Option<Range<usize>>),
314 UnmarkText,
315}
316
317struct MacWindowState {
318 handle: AnyWindowHandle,
319 executor: ForegroundExecutor,
320 native_window: id,
321 native_window_was_closed: bool,
322 native_view: NonNull<Object>,
323 display_link: Option<DisplayLink>,
324 renderer: renderer::Renderer,
325 kind: WindowKind,
326 request_frame_callback: Option<Box<dyn FnMut()>>,
327 event_callback: Option<Box<dyn FnMut(PlatformInput) -> bool>>,
328 activate_callback: Option<Box<dyn FnMut(bool)>>,
329 resize_callback: Option<Box<dyn FnMut(Size<Pixels>, f32)>>,
330 fullscreen_callback: Option<Box<dyn FnMut(bool)>>,
331 moved_callback: Option<Box<dyn FnMut()>>,
332 should_close_callback: Option<Box<dyn FnMut() -> bool>>,
333 close_callback: Option<Box<dyn FnOnce()>>,
334 appearance_changed_callback: Option<Box<dyn FnMut()>>,
335 input_handler: Option<PlatformInputHandler>,
336 last_key_equivalent: Option<KeyDownEvent>,
337 synthetic_drag_counter: usize,
338 last_fresh_keydown: Option<Keystroke>,
339 traffic_light_position: Option<Point<Pixels>>,
340 previous_modifiers_changed_event: Option<PlatformInput>,
341 // State tracking what the IME did after the last request
342 input_during_keydown: Option<SmallVec<[ImeInput; 1]>>,
343 previous_keydown_inserted_text: Option<String>,
344 external_files_dragged: bool,
345}
346
347impl MacWindowState {
348 fn move_traffic_light(&self) {
349 if let Some(traffic_light_position) = self.traffic_light_position {
350 if self.is_fullscreen() {
351 // Moving traffic lights while fullscreen doesn't work,
352 // see https://github.com/zed-industries/zed/issues/4712
353 return;
354 }
355
356 let titlebar_height = self.titlebar_height();
357
358 unsafe {
359 let close_button: id = msg_send![
360 self.native_window,
361 standardWindowButton: NSWindowButton::NSWindowCloseButton
362 ];
363 let min_button: id = msg_send![
364 self.native_window,
365 standardWindowButton: NSWindowButton::NSWindowMiniaturizeButton
366 ];
367 let zoom_button: id = msg_send![
368 self.native_window,
369 standardWindowButton: NSWindowButton::NSWindowZoomButton
370 ];
371
372 let mut close_button_frame: CGRect = msg_send![close_button, frame];
373 let mut min_button_frame: CGRect = msg_send![min_button, frame];
374 let mut zoom_button_frame: CGRect = msg_send![zoom_button, frame];
375 let mut origin = point(
376 traffic_light_position.x,
377 titlebar_height
378 - traffic_light_position.y
379 - px(close_button_frame.size.height as f32),
380 );
381 let button_spacing =
382 px((min_button_frame.origin.x - close_button_frame.origin.x) as f32);
383
384 close_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
385 let _: () = msg_send![close_button, setFrame: close_button_frame];
386 origin.x += button_spacing;
387
388 min_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
389 let _: () = msg_send![min_button, setFrame: min_button_frame];
390 origin.x += button_spacing;
391
392 zoom_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
393 let _: () = msg_send![zoom_button, setFrame: zoom_button_frame];
394 origin.x += button_spacing;
395 }
396 }
397 }
398
399 fn start_display_link(&mut self) {
400 self.stop_display_link();
401 let display_id = unsafe { display_id_for_screen(self.native_window.screen()) };
402 if let Some(mut display_link) =
403 DisplayLink::new(display_id, self.native_view.as_ptr() as *mut c_void, step).log_err()
404 {
405 display_link.start().log_err();
406 self.display_link = Some(display_link);
407 }
408 }
409
410 fn stop_display_link(&mut self) {
411 self.display_link = None;
412 }
413
414 fn is_fullscreen(&self) -> bool {
415 unsafe {
416 let style_mask = self.native_window.styleMask();
417 style_mask.contains(NSWindowStyleMask::NSFullScreenWindowMask)
418 }
419 }
420
421 fn bounds(&self) -> Bounds<GlobalPixels> {
422 let frame = unsafe { NSWindow::frame(self.native_window) };
423 global_bounds_from_ns_rect(frame)
424 }
425
426 fn content_size(&self) -> Size<Pixels> {
427 let NSSize { width, height, .. } =
428 unsafe { NSView::frame(self.native_window.contentView()) }.size;
429 size(px(width as f32), px(height as f32))
430 }
431
432 fn scale_factor(&self) -> f32 {
433 get_scale_factor(self.native_window)
434 }
435
436 fn update_drawable_size(&mut self, drawable_size: NSSize) {
437 self.renderer.update_drawable_size(Size {
438 width: drawable_size.width,
439 height: drawable_size.height,
440 })
441 }
442
443 fn titlebar_height(&self) -> Pixels {
444 unsafe {
445 let frame = NSWindow::frame(self.native_window);
446 let content_layout_rect: CGRect = msg_send![self.native_window, contentLayoutRect];
447 px((frame.size.height - content_layout_rect.size.height) as f32)
448 }
449 }
450
451 fn to_screen_ns_point(&self, point: Point<Pixels>) -> NSPoint {
452 unsafe {
453 let point = NSPoint::new(
454 point.x.into(),
455 (self.content_size().height - point.y).into(),
456 );
457 msg_send![self.native_window, convertPointToScreen: point]
458 }
459 }
460}
461
462unsafe impl Send for MacWindowState {}
463
464pub(crate) struct MacWindow(Arc<Mutex<MacWindowState>>);
465
466impl MacWindow {
467 pub fn open(
468 handle: AnyWindowHandle,
469 WindowParams {
470 bounds,
471 titlebar,
472 kind,
473 is_movable,
474 display_id,
475 focus,
476 show,
477 }: WindowParams,
478 executor: ForegroundExecutor,
479 renderer_context: renderer::Context,
480 ) -> Self {
481 unsafe {
482 let pool = NSAutoreleasePool::new(nil);
483
484 let mut style_mask;
485 if let Some(titlebar) = titlebar.as_ref() {
486 style_mask = NSWindowStyleMask::NSClosableWindowMask
487 | NSWindowStyleMask::NSMiniaturizableWindowMask
488 | NSWindowStyleMask::NSResizableWindowMask
489 | NSWindowStyleMask::NSTitledWindowMask;
490
491 if titlebar.appears_transparent {
492 style_mask |= NSWindowStyleMask::NSFullSizeContentViewWindowMask;
493 }
494 } else {
495 style_mask = NSWindowStyleMask::NSTitledWindowMask
496 | NSWindowStyleMask::NSFullSizeContentViewWindowMask;
497 }
498
499 let native_window: id = match kind {
500 WindowKind::Normal => msg_send![WINDOW_CLASS, alloc],
501 WindowKind::PopUp => {
502 style_mask |= NSWindowStyleMaskNonactivatingPanel;
503 msg_send![PANEL_CLASS, alloc]
504 }
505 };
506
507 let display = display_id
508 .and_then(MacDisplay::find_by_id)
509 .unwrap_or_else(MacDisplay::primary);
510
511 let mut target_screen = nil;
512 let screens = NSScreen::screens(nil);
513 let count: u64 = cocoa::foundation::NSArray::count(screens);
514 for i in 0..count {
515 let screen = cocoa::foundation::NSArray::objectAtIndex(screens, i);
516 let display_id = display_id_for_screen(screen);
517 if display_id == display.id().0 {
518 target_screen = screen;
519 break;
520 }
521 }
522
523 let window_rect = {
524 let display_bounds = display.bounds();
525 if bounds.intersects(&display_bounds) {
526 global_bounds_to_ns_rect(bounds)
527 } else {
528 global_bounds_to_ns_rect(display_bounds)
529 }
530 };
531
532 let native_window = native_window.initWithContentRect_styleMask_backing_defer_screen_(
533 window_rect,
534 style_mask,
535 NSBackingStoreBuffered,
536 NO,
537 target_screen,
538 );
539 assert!(!native_window.is_null());
540 let () = msg_send![
541 native_window,
542 registerForDraggedTypes:
543 NSArray::arrayWithObject(nil, NSFilenamesPboardType)
544 ];
545
546 let native_view: id = msg_send![VIEW_CLASS, alloc];
547 let native_view = NSView::init(native_view);
548 assert!(!native_view.is_null());
549
550 let window_size = {
551 let scale = get_scale_factor(native_window);
552 size(bounds.size.width.0 * scale, bounds.size.height.0 * scale)
553 };
554
555 let window = Self(Arc::new(Mutex::new(MacWindowState {
556 handle,
557 executor,
558 native_window,
559 native_window_was_closed: false,
560 native_view: NonNull::new_unchecked(native_view),
561 display_link: None,
562 renderer: renderer::new_renderer(
563 renderer_context,
564 native_window as *mut _,
565 native_view as *mut _,
566 window_size,
567 ),
568 kind,
569 request_frame_callback: None,
570 event_callback: None,
571 activate_callback: None,
572 resize_callback: None,
573 fullscreen_callback: None,
574 moved_callback: None,
575 should_close_callback: None,
576 close_callback: None,
577 appearance_changed_callback: None,
578 input_handler: None,
579 last_key_equivalent: None,
580 synthetic_drag_counter: 0,
581 last_fresh_keydown: None,
582 traffic_light_position: titlebar
583 .as_ref()
584 .and_then(|titlebar| titlebar.traffic_light_position),
585 previous_modifiers_changed_event: None,
586 input_during_keydown: None,
587 previous_keydown_inserted_text: None,
588 external_files_dragged: false,
589 })));
590
591 (*native_window).set_ivar(
592 WINDOW_STATE_IVAR,
593 Arc::into_raw(window.0.clone()) as *const c_void,
594 );
595 native_window.setDelegate_(native_window);
596 (*native_view).set_ivar(
597 WINDOW_STATE_IVAR,
598 Arc::into_raw(window.0.clone()) as *const c_void,
599 );
600
601 if let Some(title) = titlebar
602 .as_ref()
603 .and_then(|t| t.title.as_ref().map(AsRef::as_ref))
604 {
605 native_window.setTitle_(NSString::alloc(nil).init_str(title));
606 }
607
608 native_window.setMovable_(is_movable as BOOL);
609
610 if titlebar.map_or(true, |titlebar| titlebar.appears_transparent) {
611 native_window.setTitlebarAppearsTransparent_(YES);
612 native_window.setTitleVisibility_(NSWindowTitleVisibility::NSWindowTitleHidden);
613 }
614
615 native_view.setAutoresizingMask_(NSViewWidthSizable | NSViewHeightSizable);
616 native_view.setWantsBestResolutionOpenGLSurface_(YES);
617
618 // From winit crate: On Mojave, views automatically become layer-backed shortly after
619 // being added to a native_window. Changing the layer-backedness of a view breaks the
620 // association between the view and its associated OpenGL context. To work around this,
621 // on we explicitly make the view layer-backed up front so that AppKit doesn't do it
622 // itself and break the association with its context.
623 native_view.setWantsLayer(YES);
624 let _: () = msg_send![
625 native_view,
626 setLayerContentsRedrawPolicy: NSViewLayerContentsRedrawDuringViewResize
627 ];
628
629 native_window.setContentView_(native_view.autorelease());
630 native_window.makeFirstResponder_(native_view);
631
632 match kind {
633 WindowKind::Normal => {
634 native_window.setLevel_(NSNormalWindowLevel);
635 native_window.setAcceptsMouseMovedEvents_(YES);
636 }
637 WindowKind::PopUp => {
638 // Use a tracking area to allow receiving MouseMoved events even when
639 // the window or application aren't active, which is often the case
640 // e.g. for notification windows.
641 let tracking_area: id = msg_send![class!(NSTrackingArea), alloc];
642 let _: () = msg_send![
643 tracking_area,
644 initWithRect: NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.))
645 options: NSTrackingMouseEnteredAndExited | NSTrackingMouseMoved | NSTrackingActiveAlways | NSTrackingInVisibleRect
646 owner: native_view
647 userInfo: nil
648 ];
649 let _: () =
650 msg_send![native_view, addTrackingArea: tracking_area.autorelease()];
651
652 native_window.setLevel_(NSPopUpWindowLevel);
653 let _: () = msg_send![
654 native_window,
655 setAnimationBehavior: NSWindowAnimationBehaviorUtilityWindow
656 ];
657 native_window.setCollectionBehavior_(
658 NSWindowCollectionBehavior::NSWindowCollectionBehaviorCanJoinAllSpaces |
659 NSWindowCollectionBehavior::NSWindowCollectionBehaviorFullScreenAuxiliary
660 );
661 }
662 }
663
664 if focus {
665 native_window.makeKeyAndOrderFront_(nil);
666 } else if show {
667 native_window.orderFront_(nil);
668 }
669
670 window.0.lock().move_traffic_light();
671
672 pool.drain();
673
674 window
675 }
676 }
677
678 pub fn active_window() -> Option<AnyWindowHandle> {
679 unsafe {
680 let app = NSApplication::sharedApplication(nil);
681 let main_window: id = msg_send![app, mainWindow];
682 if msg_send![main_window, isKindOfClass: WINDOW_CLASS] {
683 let handle = get_window_state(&*main_window).lock().handle;
684 Some(handle)
685 } else {
686 None
687 }
688 }
689 }
690}
691
692impl Drop for MacWindow {
693 fn drop(&mut self) {
694 let mut this = self.0.lock();
695 this.renderer.destroy();
696 let window = this.native_window;
697 this.display_link.take();
698 if !this.native_window_was_closed {
699 unsafe {
700 this.native_window.setDelegate_(nil);
701 }
702
703 this.executor
704 .spawn(async move {
705 unsafe {
706 window.close();
707 }
708 })
709 .detach();
710 }
711 }
712}
713
714impl PlatformWindow for MacWindow {
715 fn bounds(&self) -> Bounds<GlobalPixels> {
716 self.0.as_ref().lock().bounds()
717 }
718
719 fn content_size(&self) -> Size<Pixels> {
720 self.0.as_ref().lock().content_size()
721 }
722
723 fn scale_factor(&self) -> f32 {
724 self.0.as_ref().lock().scale_factor()
725 }
726
727 fn titlebar_height(&self) -> Pixels {
728 self.0.as_ref().lock().titlebar_height()
729 }
730
731 fn appearance(&self) -> WindowAppearance {
732 unsafe {
733 let appearance: id = msg_send![self.0.lock().native_window, effectiveAppearance];
734 WindowAppearance::from_native(appearance)
735 }
736 }
737
738 fn display(&self) -> Rc<dyn PlatformDisplay> {
739 unsafe {
740 let screen = self.0.lock().native_window.screen();
741 let device_description: id = msg_send![screen, deviceDescription];
742 let screen_number: id = NSDictionary::valueForKey_(
743 device_description,
744 NSString::alloc(nil).init_str("NSScreenNumber"),
745 );
746
747 let screen_number: u32 = msg_send![screen_number, unsignedIntValue];
748
749 Rc::new(MacDisplay(screen_number))
750 }
751 }
752
753 fn mouse_position(&self) -> Point<Pixels> {
754 let position = unsafe {
755 self.0
756 .lock()
757 .native_window
758 .mouseLocationOutsideOfEventStream()
759 };
760 convert_mouse_position(position, self.content_size().height)
761 }
762
763 fn modifiers(&self) -> Modifiers {
764 unsafe {
765 let modifiers: NSEventModifierFlags = msg_send![class!(NSEvent), modifierFlags];
766
767 let control = modifiers.contains(NSEventModifierFlags::NSControlKeyMask);
768 let alt = modifiers.contains(NSEventModifierFlags::NSAlternateKeyMask);
769 let shift = modifiers.contains(NSEventModifierFlags::NSShiftKeyMask);
770 let command = modifiers.contains(NSEventModifierFlags::NSCommandKeyMask);
771 let function = modifiers.contains(NSEventModifierFlags::NSFunctionKeyMask);
772
773 Modifiers {
774 control,
775 alt,
776 shift,
777 command,
778 function,
779 }
780 }
781 }
782
783 fn as_any_mut(&mut self) -> &mut dyn Any {
784 self
785 }
786
787 fn set_input_handler(&mut self, input_handler: PlatformInputHandler) {
788 self.0.as_ref().lock().input_handler = Some(input_handler);
789 }
790
791 fn take_input_handler(&mut self) -> Option<PlatformInputHandler> {
792 self.0.as_ref().lock().input_handler.take()
793 }
794
795 fn prompt(
796 &self,
797 level: PromptLevel,
798 msg: &str,
799 detail: Option<&str>,
800 answers: &[&str],
801 ) -> Option<oneshot::Receiver<usize>> {
802 // macOs applies overrides to modal window buttons after they are added.
803 // Two most important for this logic are:
804 // * Buttons with "Cancel" title will be displayed as the last buttons in the modal
805 // * Last button added to the modal via `addButtonWithTitle` stays focused
806 // * Focused buttons react on "space"/" " keypresses
807 // * Usage of `keyEquivalent`, `makeFirstResponder` or `setInitialFirstResponder` does not change the focus
808 //
809 // See also https://developer.apple.com/documentation/appkit/nsalert/1524532-addbuttonwithtitle#discussion
810 // ```
811 // By default, the first button has a key equivalent of Return,
812 // any button with a title of “Cancel” has a key equivalent of Escape,
813 // 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).
814 // ```
815 //
816 // To avoid situations when the last element added is "Cancel" and it gets the focus
817 // (hence stealing both ESC and Space shortcuts), we find and add one non-Cancel button
818 // last, so it gets focus and a Space shortcut.
819 // This way, "Save this file? Yes/No/Cancel"-ish modals will get all three buttons mapped with a key.
820 let latest_non_cancel_label = answers
821 .iter()
822 .enumerate()
823 .rev()
824 .find(|(_, &label)| label != "Cancel")
825 .filter(|&(label_index, _)| label_index > 0);
826
827 unsafe {
828 let alert: id = msg_send![class!(NSAlert), alloc];
829 let alert: id = msg_send![alert, init];
830 let alert_style = match level {
831 PromptLevel::Info => 1,
832 PromptLevel::Warning => 0,
833 PromptLevel::Critical => 2,
834 };
835 let _: () = msg_send![alert, setAlertStyle: alert_style];
836 let _: () = msg_send![alert, setMessageText: ns_string(msg)];
837 if let Some(detail) = detail {
838 let _: () = msg_send![alert, setInformativeText: ns_string(detail)];
839 }
840
841 for (ix, answer) in answers
842 .iter()
843 .enumerate()
844 .filter(|&(ix, _)| Some(ix) != latest_non_cancel_label.map(|(ix, _)| ix))
845 {
846 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
847 let _: () = msg_send![button, setTag: ix as NSInteger];
848 }
849 if let Some((ix, answer)) = latest_non_cancel_label {
850 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
851 let _: () = msg_send![button, setTag: ix as NSInteger];
852 }
853
854 let (done_tx, done_rx) = oneshot::channel();
855 let done_tx = Cell::new(Some(done_tx));
856 let block = ConcreteBlock::new(move |answer: NSInteger| {
857 if let Some(done_tx) = done_tx.take() {
858 let _ = done_tx.send(answer.try_into().unwrap());
859 }
860 });
861 let block = block.copy();
862 let native_window = self.0.lock().native_window;
863 let executor = self.0.lock().executor.clone();
864 executor
865 .spawn(async move {
866 let _: () = msg_send![
867 alert,
868 beginSheetModalForWindow: native_window
869 completionHandler: block
870 ];
871 })
872 .detach();
873
874 Some(done_rx)
875 }
876 }
877
878 fn activate(&self) {
879 let window = self.0.lock().native_window;
880 let executor = self.0.lock().executor.clone();
881 executor
882 .spawn(async move {
883 unsafe {
884 let _: () = msg_send![window, makeKeyAndOrderFront: nil];
885 }
886 })
887 .detach();
888 }
889
890 fn set_title(&mut self, title: &str) {
891 unsafe {
892 let app = NSApplication::sharedApplication(nil);
893 let window = self.0.lock().native_window;
894 let title = ns_string(title);
895 let _: () = msg_send![app, changeWindowsItem:window title:title filename:false];
896 let _: () = msg_send![window, setTitle: title];
897 self.0.lock().move_traffic_light();
898 }
899 }
900
901 fn set_edited(&mut self, edited: bool) {
902 unsafe {
903 let window = self.0.lock().native_window;
904 msg_send![window, setDocumentEdited: edited as BOOL]
905 }
906
907 // Changing the document edited state resets the traffic light position,
908 // so we have to move it again.
909 self.0.lock().move_traffic_light();
910 }
911
912 fn show_character_palette(&self) {
913 let this = self.0.lock();
914 let window = this.native_window;
915 this.executor
916 .spawn(async move {
917 unsafe {
918 let app = NSApplication::sharedApplication(nil);
919 let _: () = msg_send![app, orderFrontCharacterPalette: window];
920 }
921 })
922 .detach();
923 }
924
925 fn minimize(&self) {
926 let window = self.0.lock().native_window;
927 unsafe {
928 window.miniaturize_(nil);
929 }
930 }
931
932 fn zoom(&self) {
933 let this = self.0.lock();
934 let window = this.native_window;
935 this.executor
936 .spawn(async move {
937 unsafe {
938 window.zoom_(nil);
939 }
940 })
941 .detach();
942 }
943
944 fn toggle_full_screen(&self) {
945 let this = self.0.lock();
946 let window = this.native_window;
947 this.executor
948 .spawn(async move {
949 unsafe {
950 window.toggleFullScreen_(nil);
951 }
952 })
953 .detach();
954 }
955
956 fn is_full_screen(&self) -> bool {
957 let this = self.0.lock();
958 let window = this.native_window;
959
960 unsafe {
961 window
962 .styleMask()
963 .contains(NSWindowStyleMask::NSFullScreenWindowMask)
964 }
965 }
966
967 fn on_request_frame(&self, callback: Box<dyn FnMut()>) {
968 self.0.as_ref().lock().request_frame_callback = Some(callback);
969 }
970
971 fn on_input(&self, callback: Box<dyn FnMut(PlatformInput) -> bool>) {
972 self.0.as_ref().lock().event_callback = Some(callback);
973 }
974
975 fn on_active_status_change(&self, callback: Box<dyn FnMut(bool)>) {
976 self.0.as_ref().lock().activate_callback = Some(callback);
977 }
978
979 fn on_resize(&self, callback: Box<dyn FnMut(Size<Pixels>, f32)>) {
980 self.0.as_ref().lock().resize_callback = Some(callback);
981 }
982
983 fn on_fullscreen(&self, callback: Box<dyn FnMut(bool)>) {
984 self.0.as_ref().lock().fullscreen_callback = Some(callback);
985 }
986
987 fn on_moved(&self, callback: Box<dyn FnMut()>) {
988 self.0.as_ref().lock().moved_callback = Some(callback);
989 }
990
991 fn on_should_close(&self, callback: Box<dyn FnMut() -> bool>) {
992 self.0.as_ref().lock().should_close_callback = Some(callback);
993 }
994
995 fn on_close(&self, callback: Box<dyn FnOnce()>) {
996 self.0.as_ref().lock().close_callback = Some(callback);
997 }
998
999 fn on_appearance_changed(&self, callback: Box<dyn FnMut()>) {
1000 self.0.lock().appearance_changed_callback = Some(callback);
1001 }
1002
1003 fn is_topmost_for_position(&self, position: Point<Pixels>) -> bool {
1004 let self_borrow = self.0.lock();
1005 let self_handle = self_borrow.handle;
1006
1007 unsafe {
1008 let app = NSApplication::sharedApplication(nil);
1009
1010 // Convert back to screen coordinates
1011 let screen_point = self_borrow.to_screen_ns_point(position);
1012
1013 let window_number: NSInteger = msg_send![class!(NSWindow), windowNumberAtPoint:screen_point belowWindowWithWindowNumber:0];
1014 let top_most_window: id = msg_send![app, windowWithWindowNumber: window_number];
1015
1016 let is_panel: BOOL = msg_send![top_most_window, isKindOfClass: PANEL_CLASS];
1017 let is_window: BOOL = msg_send![top_most_window, isKindOfClass: WINDOW_CLASS];
1018 if is_panel == YES || is_window == YES {
1019 let topmost_window = get_window_state(&*top_most_window).lock().handle;
1020 topmost_window == self_handle
1021 } else {
1022 // Someone else's window is on top
1023 false
1024 }
1025 }
1026 }
1027
1028 fn draw(&self, scene: &crate::Scene) {
1029 let mut this = self.0.lock();
1030 this.renderer.draw(scene);
1031 }
1032
1033 fn sprite_atlas(&self) -> Arc<dyn PlatformAtlas> {
1034 self.0.lock().renderer.sprite_atlas().clone()
1035 }
1036}
1037
1038impl HasWindowHandle for MacWindow {
1039 fn window_handle(
1040 &self,
1041 ) -> Result<raw_window_handle::WindowHandle<'_>, raw_window_handle::HandleError> {
1042 // SAFETY: The AppKitWindowHandle is a wrapper around a pointer to an NSView
1043 unsafe {
1044 Ok(WindowHandle::borrow_raw(RawWindowHandle::AppKit(
1045 AppKitWindowHandle::new(self.0.lock().native_view.cast()),
1046 )))
1047 }
1048 }
1049}
1050
1051impl HasDisplayHandle for MacWindow {
1052 fn display_handle(
1053 &self,
1054 ) -> Result<raw_window_handle::DisplayHandle<'_>, raw_window_handle::HandleError> {
1055 // SAFETY: This is a no-op on macOS
1056 unsafe { Ok(DisplayHandle::borrow_raw(AppKitDisplayHandle::new().into())) }
1057 }
1058}
1059
1060fn get_scale_factor(native_window: id) -> f32 {
1061 let factor = unsafe {
1062 let screen: id = msg_send![native_window, screen];
1063 NSScreen::backingScaleFactor(screen) as f32
1064 };
1065
1066 // We are not certain what triggers this, but it seems that sometimes
1067 // this method would return 0 (https://github.com/zed-industries/zed/issues/6412)
1068 // It seems most likely that this would happen if the window has no screen
1069 // (if it is off-screen), though we'd expect to see viewDidChangeBackingProperties before
1070 // it was rendered for real.
1071 // Regardless, attempt to avoid the issue here.
1072 if factor == 0.0 {
1073 2.
1074 } else {
1075 factor
1076 }
1077}
1078
1079unsafe fn get_window_state(object: &Object) -> Arc<Mutex<MacWindowState>> {
1080 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1081 let rc1 = Arc::from_raw(raw as *mut Mutex<MacWindowState>);
1082 let rc2 = rc1.clone();
1083 mem::forget(rc1);
1084 rc2
1085}
1086
1087unsafe fn drop_window_state(object: &Object) {
1088 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1089 Arc::from_raw(raw as *mut Mutex<MacWindowState>);
1090}
1091
1092extern "C" fn yes(_: &Object, _: Sel) -> BOOL {
1093 YES
1094}
1095
1096extern "C" fn dealloc_window(this: &Object, _: Sel) {
1097 unsafe {
1098 drop_window_state(this);
1099 let _: () = msg_send![super(this, class!(NSWindow)), dealloc];
1100 }
1101}
1102
1103extern "C" fn dealloc_view(this: &Object, _: Sel) {
1104 unsafe {
1105 drop_window_state(this);
1106 let _: () = msg_send![super(this, class!(NSView)), dealloc];
1107 }
1108}
1109
1110extern "C" fn handle_key_equivalent(this: &Object, _: Sel, native_event: id) -> BOOL {
1111 handle_key_event(this, native_event, true)
1112}
1113
1114extern "C" fn handle_key_down(this: &Object, _: Sel, native_event: id) {
1115 handle_key_event(this, native_event, false);
1116}
1117
1118// Things to test if you're modifying this method:
1119// Brazilian layout:
1120// - `" space` should type a quote
1121// - `" backspace` should delete the marked quote
1122// - `" up` should type the quote, unmark it, and move up one line
1123// - `" cmd-down` should not leave a marked quote behind (it maybe should dispatch the key though?)
1124// - `cmd-ctrl-space` and clicking on an emoji should type it
1125// Czech (QWERTY) layout:
1126// - in vim mode `option-4` should go to end of line (same as $)
1127extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent: bool) -> BOOL {
1128 let window_state = unsafe { get_window_state(this) };
1129 let mut lock = window_state.as_ref().lock();
1130
1131 let window_height = lock.content_size().height;
1132 let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) };
1133
1134 if let Some(PlatformInput::KeyDown(mut event)) = event {
1135 // For certain keystrokes, macOS will first dispatch a "key equivalent" event.
1136 // If that event isn't handled, it will then dispatch a "key down" event. GPUI
1137 // makes no distinction between these two types of events, so we need to ignore
1138 // the "key down" event if we've already just processed its "key equivalent" version.
1139 if key_equivalent {
1140 lock.last_key_equivalent = Some(event.clone());
1141 } else if lock.last_key_equivalent.take().as_ref() == Some(&event) {
1142 return NO;
1143 }
1144
1145 let keydown = event.keystroke.clone();
1146 let fn_modifier = keydown.modifiers.function;
1147 // Ignore events from held-down keys after some of the initially-pressed keys
1148 // were released.
1149 if event.is_held {
1150 if lock.last_fresh_keydown.as_ref() != Some(&keydown) {
1151 return YES;
1152 }
1153 } else {
1154 lock.last_fresh_keydown = Some(keydown.clone());
1155 }
1156 lock.input_during_keydown = Some(SmallVec::new());
1157 drop(lock);
1158
1159 // Send the event to the input context for IME handling, unless the `fn` modifier is
1160 // being pressed.
1161 // this will call back into `insert_text`, etc.
1162 if !fn_modifier {
1163 unsafe {
1164 let input_context: id = msg_send![this, inputContext];
1165 let _: BOOL = msg_send![input_context, handleEvent: native_event];
1166 }
1167 }
1168
1169 let mut handled = false;
1170 let mut lock = window_state.lock();
1171 let previous_keydown_inserted_text = lock.previous_keydown_inserted_text.take();
1172 let mut input_during_keydown = lock.input_during_keydown.take().unwrap();
1173 let mut callback = lock.event_callback.take();
1174 drop(lock);
1175
1176 let last_ime = input_during_keydown.pop();
1177 // on a brazilian keyboard typing `"` and then hitting `up` will cause two IME
1178 // events, one to unmark the quote, and one to send the up arrow.
1179 for ime in input_during_keydown {
1180 send_to_input_handler(this, ime);
1181 }
1182
1183 let is_composing =
1184 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1185 .flatten()
1186 .is_some();
1187
1188 if let Some(ime) = last_ime {
1189 if let ImeInput::InsertText(text, _) = &ime {
1190 if !is_composing {
1191 window_state.lock().previous_keydown_inserted_text = Some(text.clone());
1192 if let Some(callback) = callback.as_mut() {
1193 event.keystroke.ime_key = Some(text.clone());
1194 handled = callback(PlatformInput::KeyDown(event));
1195 }
1196 }
1197 }
1198
1199 if !handled {
1200 handled = true;
1201 send_to_input_handler(this, ime);
1202 }
1203 } else if !is_composing {
1204 let is_held = event.is_held;
1205
1206 if let Some(callback) = callback.as_mut() {
1207 handled = callback(PlatformInput::KeyDown(event));
1208 }
1209
1210 if !handled && is_held {
1211 if let Some(text) = previous_keydown_inserted_text {
1212 // MacOS IME is a bit funky, and even when you've told it there's nothing to
1213 // enter it will still swallow certain keys (e.g. 'f', 'j') and not others
1214 // (e.g. 'n'). This is a problem for certain kinds of views, like the terminal.
1215 with_input_handler(this, |input_handler| {
1216 if input_handler.selected_text_range().is_none() {
1217 handled = true;
1218 input_handler.replace_text_in_range(None, &text)
1219 }
1220 });
1221 window_state.lock().previous_keydown_inserted_text = Some(text);
1222 }
1223 }
1224 }
1225
1226 window_state.lock().event_callback = callback;
1227
1228 handled as BOOL
1229 } else {
1230 NO
1231 }
1232}
1233
1234extern "C" fn handle_view_event(this: &Object, _: Sel, native_event: id) {
1235 let window_state = unsafe { get_window_state(this) };
1236 let weak_window_state = Arc::downgrade(&window_state);
1237 let mut lock = window_state.as_ref().lock();
1238 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1239
1240 let window_height = lock.content_size().height;
1241 let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) };
1242
1243 if let Some(mut event) = event {
1244 match &mut event {
1245 PlatformInput::MouseDown(
1246 event @ MouseDownEvent {
1247 button: MouseButton::Left,
1248 modifiers: Modifiers { control: true, .. },
1249 ..
1250 },
1251 ) => {
1252 // On mac, a ctrl-left click should be handled as a right click.
1253 *event = MouseDownEvent {
1254 button: MouseButton::Right,
1255 modifiers: Modifiers {
1256 control: false,
1257 ..event.modifiers
1258 },
1259 click_count: 1,
1260 ..*event
1261 };
1262 }
1263
1264 // Because we map a ctrl-left_down to a right_down -> right_up let's ignore
1265 // the ctrl-left_up to avoid having a mismatch in button down/up events if the
1266 // user is still holding ctrl when releasing the left mouse button
1267 PlatformInput::MouseUp(
1268 event @ MouseUpEvent {
1269 button: MouseButton::Left,
1270 modifiers: Modifiers { control: true, .. },
1271 ..
1272 },
1273 ) => {
1274 *event = MouseUpEvent {
1275 button: MouseButton::Right,
1276 modifiers: Modifiers {
1277 control: false,
1278 ..event.modifiers
1279 },
1280 click_count: 1,
1281 ..*event
1282 };
1283 }
1284
1285 _ => {}
1286 };
1287
1288 match &event {
1289 PlatformInput::MouseMove(
1290 event @ MouseMoveEvent {
1291 pressed_button: Some(_),
1292 ..
1293 },
1294 ) => {
1295 // Synthetic drag is used for selecting long buffer contents while buffer is being scrolled.
1296 // External file drag and drop is able to emit its own synthetic mouse events which will conflict
1297 // with these ones.
1298 if !lock.external_files_dragged {
1299 lock.synthetic_drag_counter += 1;
1300 let executor = lock.executor.clone();
1301 executor
1302 .spawn(synthetic_drag(
1303 weak_window_state,
1304 lock.synthetic_drag_counter,
1305 event.clone(),
1306 ))
1307 .detach();
1308 }
1309 }
1310
1311 PlatformInput::MouseMove(_) if !(is_active || lock.kind == WindowKind::PopUp) => return,
1312
1313 PlatformInput::MouseUp(MouseUpEvent { .. }) => {
1314 lock.synthetic_drag_counter += 1;
1315 }
1316
1317 PlatformInput::ModifiersChanged(ModifiersChangedEvent { modifiers }) => {
1318 // Only raise modifiers changed event when they have actually changed
1319 if let Some(PlatformInput::ModifiersChanged(ModifiersChangedEvent {
1320 modifiers: prev_modifiers,
1321 })) = &lock.previous_modifiers_changed_event
1322 {
1323 if prev_modifiers == modifiers {
1324 return;
1325 }
1326 }
1327
1328 lock.previous_modifiers_changed_event = Some(event.clone());
1329 }
1330
1331 _ => {}
1332 }
1333
1334 if let Some(mut callback) = lock.event_callback.take() {
1335 drop(lock);
1336 callback(event);
1337 window_state.lock().event_callback = Some(callback);
1338 }
1339 }
1340}
1341
1342// Allows us to receive `cmd-.` (the shortcut for closing a dialog)
1343// https://bugs.eclipse.org/bugs/show_bug.cgi?id=300620#c6
1344extern "C" fn cancel_operation(this: &Object, _sel: Sel, _sender: id) {
1345 let window_state = unsafe { get_window_state(this) };
1346 let mut lock = window_state.as_ref().lock();
1347
1348 let keystroke = Keystroke {
1349 modifiers: Default::default(),
1350 key: ".".into(),
1351 ime_key: None,
1352 };
1353 let event = PlatformInput::KeyDown(KeyDownEvent {
1354 keystroke: keystroke.clone(),
1355 is_held: false,
1356 });
1357
1358 lock.last_fresh_keydown = Some(keystroke);
1359 if let Some(mut callback) = lock.event_callback.take() {
1360 drop(lock);
1361 callback(event);
1362 window_state.lock().event_callback = Some(callback);
1363 }
1364}
1365
1366extern "C" fn window_did_change_occlusion_state(this: &Object, _: Sel, _: id) {
1367 let window_state = unsafe { get_window_state(this) };
1368 let lock = &mut *window_state.lock();
1369 unsafe {
1370 if lock
1371 .native_window
1372 .occlusionState()
1373 .contains(NSWindowOcclusionState::NSWindowOcclusionStateVisible)
1374 {
1375 lock.start_display_link();
1376 } else {
1377 lock.stop_display_link();
1378 }
1379 }
1380}
1381
1382extern "C" fn window_did_resize(this: &Object, _: Sel, _: id) {
1383 let window_state = unsafe { get_window_state(this) };
1384 window_state.as_ref().lock().move_traffic_light();
1385}
1386
1387extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) {
1388 window_fullscreen_changed(this, true);
1389}
1390
1391extern "C" fn window_will_exit_fullscreen(this: &Object, _: Sel, _: id) {
1392 window_fullscreen_changed(this, false);
1393}
1394
1395fn window_fullscreen_changed(this: &Object, is_fullscreen: bool) {
1396 let window_state = unsafe { get_window_state(this) };
1397 let mut lock = window_state.as_ref().lock();
1398 if let Some(mut callback) = lock.fullscreen_callback.take() {
1399 drop(lock);
1400 callback(is_fullscreen);
1401 window_state.lock().fullscreen_callback = Some(callback);
1402 }
1403}
1404
1405extern "C" fn window_did_move(this: &Object, _: Sel, _: id) {
1406 let window_state = unsafe { get_window_state(this) };
1407 let mut lock = window_state.as_ref().lock();
1408 if let Some(mut callback) = lock.moved_callback.take() {
1409 drop(lock);
1410 callback();
1411 window_state.lock().moved_callback = Some(callback);
1412 }
1413}
1414
1415extern "C" fn window_did_change_screen(this: &Object, _: Sel, _: id) {
1416 let window_state = unsafe { get_window_state(this) };
1417 let mut lock = window_state.as_ref().lock();
1418 lock.start_display_link();
1419}
1420
1421extern "C" fn window_did_change_key_status(this: &Object, selector: Sel, _: id) {
1422 let window_state = unsafe { get_window_state(this) };
1423 let lock = window_state.lock();
1424 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1425
1426 // When opening a pop-up while the application isn't active, Cocoa sends a spurious
1427 // `windowDidBecomeKey` message to the previous key window even though that window
1428 // isn't actually key. This causes a bug if the application is later activated while
1429 // the pop-up is still open, making it impossible to activate the previous key window
1430 // even if the pop-up gets closed. The only way to activate it again is to de-activate
1431 // the app and re-activate it, which is a pretty bad UX.
1432 // The following code detects the spurious event and invokes `resignKeyWindow`:
1433 // in theory, we're not supposed to invoke this method manually but it balances out
1434 // the spurious `becomeKeyWindow` event and helps us work around that bug.
1435 if selector == sel!(windowDidBecomeKey:) && !is_active {
1436 unsafe {
1437 let _: () = msg_send![lock.native_window, resignKeyWindow];
1438 return;
1439 }
1440 }
1441
1442 let executor = lock.executor.clone();
1443 drop(lock);
1444 executor
1445 .spawn(async move {
1446 let mut lock = window_state.as_ref().lock();
1447 if let Some(mut callback) = lock.activate_callback.take() {
1448 drop(lock);
1449 callback(is_active);
1450 window_state.lock().activate_callback = Some(callback);
1451 };
1452 })
1453 .detach();
1454}
1455
1456extern "C" fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
1457 let window_state = unsafe { get_window_state(this) };
1458 let mut lock = window_state.as_ref().lock();
1459 if let Some(mut callback) = lock.should_close_callback.take() {
1460 drop(lock);
1461 let should_close = callback();
1462 window_state.lock().should_close_callback = Some(callback);
1463 should_close as BOOL
1464 } else {
1465 YES
1466 }
1467}
1468
1469extern "C" fn close_window(this: &Object, _: Sel) {
1470 unsafe {
1471 let close_callback = {
1472 let window_state = get_window_state(this);
1473 let mut lock = window_state.as_ref().lock();
1474 lock.native_window_was_closed = true;
1475 lock.close_callback.take()
1476 };
1477
1478 if let Some(callback) = close_callback {
1479 callback();
1480 }
1481
1482 let _: () = msg_send![super(this, class!(NSWindow)), close];
1483 }
1484}
1485
1486extern "C" fn make_backing_layer(this: &Object, _: Sel) -> id {
1487 let window_state = unsafe { get_window_state(this) };
1488 let window_state = window_state.as_ref().lock();
1489 window_state.renderer.layer_ptr() as id
1490}
1491
1492extern "C" fn view_did_change_backing_properties(this: &Object, _: Sel) {
1493 let window_state = unsafe { get_window_state(this) };
1494 let mut lock = window_state.as_ref().lock();
1495
1496 let scale_factor = lock.scale_factor() as f64;
1497 let size = lock.content_size();
1498 let drawable_size: NSSize = NSSize {
1499 width: f64::from(size.width) * scale_factor,
1500 height: f64::from(size.height) * scale_factor,
1501 };
1502 unsafe {
1503 let _: () = msg_send![
1504 lock.renderer.layer(),
1505 setContentsScale: scale_factor
1506 ];
1507 }
1508
1509 lock.update_drawable_size(drawable_size);
1510
1511 if let Some(mut callback) = lock.resize_callback.take() {
1512 let content_size = lock.content_size();
1513 let scale_factor = lock.scale_factor();
1514 drop(lock);
1515 callback(content_size, scale_factor);
1516 window_state.as_ref().lock().resize_callback = Some(callback);
1517 };
1518}
1519
1520extern "C" fn set_frame_size(this: &Object, _: Sel, size: NSSize) {
1521 let window_state = unsafe { get_window_state(this) };
1522 let mut lock = window_state.as_ref().lock();
1523
1524 if lock.content_size() == size.into() {
1525 return;
1526 }
1527
1528 unsafe {
1529 let _: () = msg_send![super(this, class!(NSView)), setFrameSize: size];
1530 }
1531
1532 let scale_factor = lock.scale_factor() as f64;
1533 let drawable_size: NSSize = NSSize {
1534 width: size.width * scale_factor,
1535 height: size.height * scale_factor,
1536 };
1537
1538 lock.update_drawable_size(drawable_size);
1539
1540 drop(lock);
1541 let mut lock = window_state.lock();
1542 if let Some(mut callback) = lock.resize_callback.take() {
1543 let content_size = lock.content_size();
1544 let scale_factor = lock.scale_factor();
1545 drop(lock);
1546 callback(content_size, scale_factor);
1547 window_state.lock().resize_callback = Some(callback);
1548 };
1549}
1550
1551extern "C" fn display_layer(this: &Object, _: Sel, _: id) {
1552 let window_state = unsafe { get_window_state(this) };
1553 let mut lock = window_state.lock();
1554 if let Some(mut callback) = lock.request_frame_callback.take() {
1555 #[cfg(not(feature = "macos-blade"))]
1556 lock.renderer.set_presents_with_transaction(true);
1557 lock.stop_display_link();
1558 drop(lock);
1559 callback();
1560
1561 let mut lock = window_state.lock();
1562 lock.request_frame_callback = Some(callback);
1563 #[cfg(not(feature = "macos-blade"))]
1564 lock.renderer.set_presents_with_transaction(false);
1565 lock.start_display_link();
1566 }
1567}
1568
1569unsafe extern "C" fn step(view: *mut c_void) {
1570 let view = view as id;
1571 let window_state = unsafe { get_window_state(&*view) };
1572 let mut lock = window_state.lock();
1573
1574 if let Some(mut callback) = lock.request_frame_callback.take() {
1575 drop(lock);
1576 callback();
1577 window_state.lock().request_frame_callback = Some(callback);
1578 }
1579}
1580
1581extern "C" fn valid_attributes_for_marked_text(_: &Object, _: Sel) -> id {
1582 unsafe { msg_send![class!(NSArray), array] }
1583}
1584
1585extern "C" fn has_marked_text(this: &Object, _: Sel) -> BOOL {
1586 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1587 .flatten()
1588 .is_some() as BOOL
1589}
1590
1591extern "C" fn marked_range(this: &Object, _: Sel) -> NSRange {
1592 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1593 .flatten()
1594 .map_or(NSRange::invalid(), |range| range.into())
1595}
1596
1597extern "C" fn selected_range(this: &Object, _: Sel) -> NSRange {
1598 with_input_handler(this, |input_handler| input_handler.selected_text_range())
1599 .flatten()
1600 .map_or(NSRange::invalid(), |range| range.into())
1601}
1602
1603extern "C" fn first_rect_for_character_range(
1604 this: &Object,
1605 _: Sel,
1606 range: NSRange,
1607 _: id,
1608) -> NSRect {
1609 let frame = unsafe {
1610 let window = get_window_state(this).lock().native_window;
1611 NSView::frame(window)
1612 };
1613 with_input_handler(this, |input_handler| {
1614 input_handler.bounds_for_range(range.to_range()?)
1615 })
1616 .flatten()
1617 .map_or(
1618 NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)),
1619 |bounds| {
1620 NSRect::new(
1621 NSPoint::new(
1622 frame.origin.x + bounds.origin.x.0 as f64,
1623 frame.origin.y + frame.size.height
1624 - bounds.origin.y.0 as f64
1625 - bounds.size.height.0 as f64,
1626 ),
1627 NSSize::new(bounds.size.width.0 as f64, bounds.size.height.0 as f64),
1628 )
1629 },
1630 )
1631}
1632
1633extern "C" fn insert_text(this: &Object, _: Sel, text: id, replacement_range: NSRange) {
1634 unsafe {
1635 let is_attributed_string: BOOL =
1636 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1637 let text: id = if is_attributed_string == YES {
1638 msg_send![text, string]
1639 } else {
1640 text
1641 };
1642 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1643 .to_str()
1644 .unwrap();
1645 let replacement_range = replacement_range.to_range();
1646 send_to_input_handler(
1647 this,
1648 ImeInput::InsertText(text.to_string(), replacement_range),
1649 );
1650 }
1651}
1652
1653extern "C" fn set_marked_text(
1654 this: &Object,
1655 _: Sel,
1656 text: id,
1657 selected_range: NSRange,
1658 replacement_range: NSRange,
1659) {
1660 unsafe {
1661 let is_attributed_string: BOOL =
1662 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1663 let text: id = if is_attributed_string == YES {
1664 msg_send![text, string]
1665 } else {
1666 text
1667 };
1668 let selected_range = selected_range.to_range();
1669 let replacement_range = replacement_range.to_range();
1670 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1671 .to_str()
1672 .unwrap();
1673
1674 send_to_input_handler(
1675 this,
1676 ImeInput::SetMarkedText(text.to_string(), replacement_range, selected_range),
1677 );
1678 }
1679}
1680extern "C" fn unmark_text(this: &Object, _: Sel) {
1681 send_to_input_handler(this, ImeInput::UnmarkText);
1682}
1683
1684extern "C" fn attributed_substring_for_proposed_range(
1685 this: &Object,
1686 _: Sel,
1687 range: NSRange,
1688 _actual_range: *mut c_void,
1689) -> id {
1690 with_input_handler(this, |input_handler| {
1691 let range = range.to_range()?;
1692 if range.is_empty() {
1693 return None;
1694 }
1695
1696 let selected_text = input_handler.text_for_range(range)?;
1697 unsafe {
1698 let string: id = msg_send![class!(NSAttributedString), alloc];
1699 let string: id = msg_send![string, initWithString: ns_string(&selected_text)];
1700 Some(string)
1701 }
1702 })
1703 .flatten()
1704 .unwrap_or(nil)
1705}
1706
1707extern "C" fn do_command_by_selector(_: &Object, _: Sel, _: Sel) {}
1708
1709extern "C" fn view_did_change_effective_appearance(this: &Object, _: Sel) {
1710 unsafe {
1711 let state = get_window_state(this);
1712 let mut lock = state.as_ref().lock();
1713 if let Some(mut callback) = lock.appearance_changed_callback.take() {
1714 drop(lock);
1715 callback();
1716 state.lock().appearance_changed_callback = Some(callback);
1717 }
1718 }
1719}
1720
1721extern "C" fn accepts_first_mouse(this: &Object, _: Sel, _: id) -> BOOL {
1722 unsafe {
1723 let state = get_window_state(this);
1724 let lock = state.as_ref().lock();
1725 if lock.kind == WindowKind::PopUp {
1726 YES
1727 } else {
1728 NO
1729 }
1730 }
1731}
1732
1733extern "C" fn dragging_entered(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1734 let window_state = unsafe { get_window_state(this) };
1735 if send_new_event(&window_state, {
1736 let position = drag_event_position(&window_state, dragging_info);
1737 let paths = external_paths_from_event(dragging_info);
1738 PlatformInput::FileDrop(FileDropEvent::Entered { position, paths })
1739 }) {
1740 window_state.lock().external_files_dragged = true;
1741 NSDragOperationCopy
1742 } else {
1743 NSDragOperationNone
1744 }
1745}
1746
1747extern "C" fn dragging_updated(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1748 let window_state = unsafe { get_window_state(this) };
1749 let position = drag_event_position(&window_state, dragging_info);
1750 if send_new_event(
1751 &window_state,
1752 PlatformInput::FileDrop(FileDropEvent::Pending { position }),
1753 ) {
1754 NSDragOperationCopy
1755 } else {
1756 NSDragOperationNone
1757 }
1758}
1759
1760extern "C" fn dragging_exited(this: &Object, _: Sel, _: id) {
1761 let window_state = unsafe { get_window_state(this) };
1762 send_new_event(
1763 &window_state,
1764 PlatformInput::FileDrop(FileDropEvent::Exited),
1765 );
1766 window_state.lock().external_files_dragged = false;
1767}
1768
1769extern "C" fn perform_drag_operation(this: &Object, _: Sel, dragging_info: id) -> BOOL {
1770 let window_state = unsafe { get_window_state(this) };
1771 let position = drag_event_position(&window_state, dragging_info);
1772 if send_new_event(
1773 &window_state,
1774 PlatformInput::FileDrop(FileDropEvent::Submit { position }),
1775 ) {
1776 YES
1777 } else {
1778 NO
1779 }
1780}
1781
1782fn external_paths_from_event(dragging_info: *mut Object) -> ExternalPaths {
1783 let mut paths = SmallVec::new();
1784 let pasteboard: id = unsafe { msg_send![dragging_info, draggingPasteboard] };
1785 let filenames = unsafe { NSPasteboard::propertyListForType(pasteboard, NSFilenamesPboardType) };
1786 for file in unsafe { filenames.iter() } {
1787 let path = unsafe {
1788 let f = NSString::UTF8String(file);
1789 CStr::from_ptr(f).to_string_lossy().into_owned()
1790 };
1791 paths.push(PathBuf::from(path))
1792 }
1793 ExternalPaths(paths)
1794}
1795
1796extern "C" fn conclude_drag_operation(this: &Object, _: Sel, _: id) {
1797 let window_state = unsafe { get_window_state(this) };
1798 send_new_event(
1799 &window_state,
1800 PlatformInput::FileDrop(FileDropEvent::Exited),
1801 );
1802}
1803
1804async fn synthetic_drag(
1805 window_state: Weak<Mutex<MacWindowState>>,
1806 drag_id: usize,
1807 event: MouseMoveEvent,
1808) {
1809 loop {
1810 Timer::after(Duration::from_millis(16)).await;
1811 if let Some(window_state) = window_state.upgrade() {
1812 let mut lock = window_state.lock();
1813 if lock.synthetic_drag_counter == drag_id {
1814 if let Some(mut callback) = lock.event_callback.take() {
1815 drop(lock);
1816 callback(PlatformInput::MouseMove(event.clone()));
1817 window_state.lock().event_callback = Some(callback);
1818 }
1819 } else {
1820 break;
1821 }
1822 }
1823 }
1824}
1825
1826fn send_new_event(window_state_lock: &Mutex<MacWindowState>, e: PlatformInput) -> bool {
1827 let window_state = window_state_lock.lock().event_callback.take();
1828 if let Some(mut callback) = window_state {
1829 callback(e);
1830 window_state_lock.lock().event_callback = Some(callback);
1831 true
1832 } else {
1833 false
1834 }
1835}
1836
1837fn drag_event_position(window_state: &Mutex<MacWindowState>, dragging_info: id) -> Point<Pixels> {
1838 let drag_location: NSPoint = unsafe { msg_send![dragging_info, draggingLocation] };
1839 convert_mouse_position(drag_location, window_state.lock().content_size().height)
1840}
1841
1842fn with_input_handler<F, R>(window: &Object, f: F) -> Option<R>
1843where
1844 F: FnOnce(&mut PlatformInputHandler) -> R,
1845{
1846 let window_state = unsafe { get_window_state(window) };
1847 let mut lock = window_state.as_ref().lock();
1848 if let Some(mut input_handler) = lock.input_handler.take() {
1849 drop(lock);
1850 let result = f(&mut input_handler);
1851 window_state.lock().input_handler = Some(input_handler);
1852 Some(result)
1853 } else {
1854 None
1855 }
1856}
1857
1858fn send_to_input_handler(window: &Object, ime: ImeInput) {
1859 unsafe {
1860 let window_state = get_window_state(window);
1861 let mut lock = window_state.lock();
1862 if let Some(ime_input) = lock.input_during_keydown.as_mut() {
1863 ime_input.push(ime);
1864 return;
1865 }
1866 if let Some(mut input_handler) = lock.input_handler.take() {
1867 drop(lock);
1868 match ime {
1869 ImeInput::InsertText(text, range) => {
1870 input_handler.replace_text_in_range(range, &text)
1871 }
1872 ImeInput::SetMarkedText(text, range, marked_range) => {
1873 input_handler.replace_and_mark_text_in_range(range, &text, marked_range)
1874 }
1875 ImeInput::UnmarkText => input_handler.unmark_text(),
1876 }
1877 window_state.lock().input_handler = Some(input_handler);
1878 }
1879 }
1880}
1881
1882unsafe fn display_id_for_screen(screen: id) -> CGDirectDisplayID {
1883 let device_description = NSScreen::deviceDescription(screen);
1884 let screen_number_key: id = NSString::alloc(nil).init_str("NSScreenNumber");
1885 let screen_number = device_description.objectForKey_(screen_number_key);
1886 let screen_number: NSUInteger = msg_send![screen_number, unsignedIntegerValue];
1887 screen_number as CGDirectDisplayID
1888}