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, WindowBounds, WindowKind,
8 WindowOptions,
9};
10use block::ConcreteBlock;
11use cocoa::{
12 appkit::{
13 CGPoint, NSApplication, NSBackingStoreBuffered, 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, NSPoint, NSRect,
21 NSSize, NSString, NSUInteger,
22 },
23};
24use core_graphics::display::{CGDirectDisplayID, CGRect};
25use ctor::ctor;
26use futures::channel::oneshot;
27use objc::{
28 class,
29 declare::ClassDecl,
30 msg_send,
31 runtime::{Class, Object, Protocol, Sel, BOOL, NO, YES},
32 sel, sel_impl,
33};
34use parking_lot::Mutex;
35use raw_window_handle::{
36 AppKitDisplayHandle, AppKitWindowHandle, DisplayHandle, HasDisplayHandle, HasWindowHandle,
37 RawWindowHandle, WindowHandle,
38};
39use smallvec::SmallVec;
40use std::{
41 any::Any,
42 cell::Cell,
43 ffi::{c_void, CStr},
44 mem,
45 ops::Range,
46 os::raw::c_char,
47 path::PathBuf,
48 ptr::{self, NonNull},
49 rc::Rc,
50 sync::{Arc, Weak},
51 time::Duration,
52};
53use util::ResultExt;
54
55const WINDOW_STATE_IVAR: &str = "windowState";
56
57static mut WINDOW_CLASS: *const Class = ptr::null();
58static mut PANEL_CLASS: *const Class = ptr::null();
59static mut VIEW_CLASS: *const Class = ptr::null();
60
61#[allow(non_upper_case_globals)]
62const NSWindowStyleMaskNonactivatingPanel: NSWindowStyleMask =
63 unsafe { NSWindowStyleMask::from_bits_unchecked(1 << 7) };
64#[allow(non_upper_case_globals)]
65const NSNormalWindowLevel: NSInteger = 0;
66#[allow(non_upper_case_globals)]
67const NSPopUpWindowLevel: NSInteger = 101;
68#[allow(non_upper_case_globals)]
69const NSTrackingMouseEnteredAndExited: NSUInteger = 0x01;
70#[allow(non_upper_case_globals)]
71const NSTrackingMouseMoved: NSUInteger = 0x02;
72#[allow(non_upper_case_globals)]
73const NSTrackingActiveAlways: NSUInteger = 0x80;
74#[allow(non_upper_case_globals)]
75const NSTrackingInVisibleRect: NSUInteger = 0x200;
76#[allow(non_upper_case_globals)]
77const NSWindowAnimationBehaviorUtilityWindow: NSInteger = 4;
78#[allow(non_upper_case_globals)]
79const NSViewLayerContentsRedrawDuringViewResize: NSInteger = 2;
80// https://developer.apple.com/documentation/appkit/nsdragoperation
81type NSDragOperation = NSUInteger;
82#[allow(non_upper_case_globals)]
83const NSDragOperationNone: NSDragOperation = 0;
84#[allow(non_upper_case_globals)]
85const NSDragOperationCopy: NSDragOperation = 1;
86
87#[ctor]
88unsafe fn build_classes() {
89 WINDOW_CLASS = build_window_class("GPUIWindow", class!(NSWindow));
90 PANEL_CLASS = build_window_class("GPUIPanel", class!(NSPanel));
91 VIEW_CLASS = {
92 let mut decl = ClassDecl::new("GPUIView", class!(NSView)).unwrap();
93 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
94
95 decl.add_method(sel!(dealloc), dealloc_view as extern "C" fn(&Object, Sel));
96
97 decl.add_method(
98 sel!(performKeyEquivalent:),
99 handle_key_equivalent as extern "C" fn(&Object, Sel, id) -> BOOL,
100 );
101 decl.add_method(
102 sel!(keyDown:),
103 handle_key_down as extern "C" fn(&Object, Sel, id),
104 );
105 decl.add_method(
106 sel!(mouseDown:),
107 handle_view_event as extern "C" fn(&Object, Sel, id),
108 );
109 decl.add_method(
110 sel!(mouseUp:),
111 handle_view_event as extern "C" fn(&Object, Sel, id),
112 );
113 decl.add_method(
114 sel!(rightMouseDown:),
115 handle_view_event as extern "C" fn(&Object, Sel, id),
116 );
117 decl.add_method(
118 sel!(rightMouseUp:),
119 handle_view_event as extern "C" fn(&Object, Sel, id),
120 );
121 decl.add_method(
122 sel!(otherMouseDown:),
123 handle_view_event as extern "C" fn(&Object, Sel, id),
124 );
125 decl.add_method(
126 sel!(otherMouseUp:),
127 handle_view_event as extern "C" fn(&Object, Sel, id),
128 );
129 decl.add_method(
130 sel!(mouseMoved:),
131 handle_view_event as extern "C" fn(&Object, Sel, id),
132 );
133 decl.add_method(
134 sel!(mouseExited:),
135 handle_view_event as extern "C" fn(&Object, Sel, id),
136 );
137 decl.add_method(
138 sel!(mouseDragged:),
139 handle_view_event as extern "C" fn(&Object, Sel, id),
140 );
141 decl.add_method(
142 sel!(scrollWheel:),
143 handle_view_event as extern "C" fn(&Object, Sel, id),
144 );
145 decl.add_method(
146 sel!(flagsChanged:),
147 handle_view_event as extern "C" fn(&Object, Sel, id),
148 );
149 decl.add_method(
150 sel!(cancelOperation:),
151 cancel_operation as extern "C" fn(&Object, Sel, id),
152 );
153
154 decl.add_method(
155 sel!(makeBackingLayer),
156 make_backing_layer as extern "C" fn(&Object, Sel) -> id,
157 );
158
159 decl.add_protocol(Protocol::get("CALayerDelegate").unwrap());
160 decl.add_method(
161 sel!(viewDidChangeBackingProperties),
162 view_did_change_backing_properties as extern "C" fn(&Object, Sel),
163 );
164 decl.add_method(
165 sel!(setFrameSize:),
166 set_frame_size as extern "C" fn(&Object, Sel, NSSize),
167 );
168 decl.add_method(
169 sel!(displayLayer:),
170 display_layer as extern "C" fn(&Object, Sel, id),
171 );
172
173 decl.add_protocol(Protocol::get("NSTextInputClient").unwrap());
174 decl.add_method(
175 sel!(validAttributesForMarkedText),
176 valid_attributes_for_marked_text as extern "C" fn(&Object, Sel) -> id,
177 );
178 decl.add_method(
179 sel!(hasMarkedText),
180 has_marked_text as extern "C" fn(&Object, Sel) -> BOOL,
181 );
182 decl.add_method(
183 sel!(markedRange),
184 marked_range as extern "C" fn(&Object, Sel) -> NSRange,
185 );
186 decl.add_method(
187 sel!(selectedRange),
188 selected_range as extern "C" fn(&Object, Sel) -> NSRange,
189 );
190 decl.add_method(
191 sel!(firstRectForCharacterRange:actualRange:),
192 first_rect_for_character_range as extern "C" fn(&Object, Sel, NSRange, id) -> NSRect,
193 );
194 decl.add_method(
195 sel!(insertText:replacementRange:),
196 insert_text as extern "C" fn(&Object, Sel, id, NSRange),
197 );
198 decl.add_method(
199 sel!(setMarkedText:selectedRange:replacementRange:),
200 set_marked_text as extern "C" fn(&Object, Sel, id, NSRange, NSRange),
201 );
202 decl.add_method(sel!(unmarkText), unmark_text as extern "C" fn(&Object, Sel));
203 decl.add_method(
204 sel!(attributedSubstringForProposedRange:actualRange:),
205 attributed_substring_for_proposed_range
206 as extern "C" fn(&Object, Sel, NSRange, *mut c_void) -> id,
207 );
208 decl.add_method(
209 sel!(viewDidChangeEffectiveAppearance),
210 view_did_change_effective_appearance as extern "C" fn(&Object, Sel),
211 );
212
213 // Suppress beep on keystrokes with modifier keys.
214 decl.add_method(
215 sel!(doCommandBySelector:),
216 do_command_by_selector as extern "C" fn(&Object, Sel, Sel),
217 );
218
219 decl.add_method(
220 sel!(acceptsFirstMouse:),
221 accepts_first_mouse as extern "C" fn(&Object, Sel, id) -> BOOL,
222 );
223
224 decl.register()
225 };
226}
227
228pub(crate) fn convert_mouse_position(position: NSPoint, window_height: Pixels) -> Point<Pixels> {
229 point(
230 px(position.x as f32),
231 // MacOS screen coordinates are relative to bottom left
232 window_height - px(position.y as f32),
233 )
234}
235
236unsafe fn build_window_class(name: &'static str, superclass: &Class) -> *const Class {
237 let mut decl = ClassDecl::new(name, superclass).unwrap();
238 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
239 decl.add_method(sel!(dealloc), dealloc_window as extern "C" fn(&Object, Sel));
240 decl.add_method(
241 sel!(canBecomeMainWindow),
242 yes as extern "C" fn(&Object, Sel) -> BOOL,
243 );
244 decl.add_method(
245 sel!(canBecomeKeyWindow),
246 yes as extern "C" fn(&Object, Sel) -> BOOL,
247 );
248 decl.add_method(
249 sel!(windowDidResize:),
250 window_did_resize as extern "C" fn(&Object, Sel, id),
251 );
252 decl.add_method(
253 sel!(windowDidChangeOcclusionState:),
254 window_did_change_occlusion_state as extern "C" fn(&Object, Sel, id),
255 );
256 decl.add_method(
257 sel!(windowWillEnterFullScreen:),
258 window_will_enter_fullscreen as extern "C" fn(&Object, Sel, id),
259 );
260 decl.add_method(
261 sel!(windowWillExitFullScreen:),
262 window_will_exit_fullscreen as extern "C" fn(&Object, Sel, id),
263 );
264 decl.add_method(
265 sel!(windowDidMove:),
266 window_did_move as extern "C" fn(&Object, Sel, id),
267 );
268 decl.add_method(
269 sel!(windowDidChangeScreen:),
270 window_did_change_screen as extern "C" fn(&Object, Sel, id),
271 );
272 decl.add_method(
273 sel!(windowDidBecomeKey:),
274 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
275 );
276 decl.add_method(
277 sel!(windowDidResignKey:),
278 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
279 );
280 decl.add_method(
281 sel!(windowShouldClose:),
282 window_should_close as extern "C" fn(&Object, Sel, id) -> BOOL,
283 );
284
285 decl.add_method(sel!(close), close_window as extern "C" fn(&Object, Sel));
286
287 decl.add_method(
288 sel!(draggingEntered:),
289 dragging_entered as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
290 );
291 decl.add_method(
292 sel!(draggingUpdated:),
293 dragging_updated as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
294 );
295 decl.add_method(
296 sel!(draggingExited:),
297 dragging_exited as extern "C" fn(&Object, Sel, id),
298 );
299 decl.add_method(
300 sel!(performDragOperation:),
301 perform_drag_operation as extern "C" fn(&Object, Sel, id) -> BOOL,
302 );
303 decl.add_method(
304 sel!(concludeDragOperation:),
305 conclude_drag_operation as extern "C" fn(&Object, Sel, id),
306 );
307
308 decl.register()
309}
310
311#[allow(clippy::enum_variant_names)]
312enum ImeInput {
313 InsertText(String, Option<Range<usize>>),
314 SetMarkedText(String, Option<Range<usize>>, Option<Range<usize>>),
315 UnmarkText,
316}
317
318struct MacWindowState {
319 handle: AnyWindowHandle,
320 executor: ForegroundExecutor,
321 native_window: id,
322 native_window_was_closed: bool,
323 native_view: NonNull<Object>,
324 display_link: Option<DisplayLink>,
325 renderer: renderer::Renderer,
326 kind: WindowKind,
327 request_frame_callback: Option<Box<dyn FnMut()>>,
328 event_callback: Option<Box<dyn FnMut(PlatformInput) -> bool>>,
329 activate_callback: Option<Box<dyn FnMut(bool)>>,
330 resize_callback: Option<Box<dyn FnMut(Size<Pixels>, f32)>>,
331 fullscreen_callback: Option<Box<dyn FnMut(bool)>>,
332 moved_callback: Option<Box<dyn FnMut()>>,
333 should_close_callback: Option<Box<dyn FnMut() -> bool>>,
334 close_callback: Option<Box<dyn FnOnce()>>,
335 appearance_changed_callback: Option<Box<dyn FnMut()>>,
336 input_handler: Option<PlatformInputHandler>,
337 last_key_equivalent: Option<KeyDownEvent>,
338 synthetic_drag_counter: usize,
339 last_fresh_keydown: Option<Keystroke>,
340 traffic_light_position: Option<Point<Pixels>>,
341 previous_modifiers_changed_event: Option<PlatformInput>,
342 // State tracking what the IME did after the last request
343 input_during_keydown: Option<SmallVec<[ImeInput; 1]>>,
344 previous_keydown_inserted_text: Option<String>,
345 external_files_dragged: bool,
346}
347
348impl MacWindowState {
349 fn move_traffic_light(&self) {
350 if let Some(traffic_light_position) = self.traffic_light_position {
351 if self.is_fullscreen() {
352 // Moving traffic lights while fullscreen doesn't work,
353 // see https://github.com/zed-industries/zed/issues/4712
354 return;
355 }
356
357 let titlebar_height = self.titlebar_height();
358
359 unsafe {
360 let close_button: id = msg_send![
361 self.native_window,
362 standardWindowButton: NSWindowButton::NSWindowCloseButton
363 ];
364 let min_button: id = msg_send![
365 self.native_window,
366 standardWindowButton: NSWindowButton::NSWindowMiniaturizeButton
367 ];
368 let zoom_button: id = msg_send![
369 self.native_window,
370 standardWindowButton: NSWindowButton::NSWindowZoomButton
371 ];
372
373 let mut close_button_frame: CGRect = msg_send![close_button, frame];
374 let mut min_button_frame: CGRect = msg_send![min_button, frame];
375 let mut zoom_button_frame: CGRect = msg_send![zoom_button, frame];
376 let mut origin = point(
377 traffic_light_position.x,
378 titlebar_height
379 - traffic_light_position.y
380 - px(close_button_frame.size.height as f32),
381 );
382 let button_spacing =
383 px((min_button_frame.origin.x - close_button_frame.origin.x) as f32);
384
385 close_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
386 let _: () = msg_send![close_button, setFrame: close_button_frame];
387 origin.x += button_spacing;
388
389 min_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
390 let _: () = msg_send![min_button, setFrame: min_button_frame];
391 origin.x += button_spacing;
392
393 zoom_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
394 let _: () = msg_send![zoom_button, setFrame: zoom_button_frame];
395 origin.x += button_spacing;
396 }
397 }
398 }
399
400 fn start_display_link(&mut self) {
401 self.stop_display_link();
402 let display_id = unsafe { display_id_for_screen(self.native_window.screen()) };
403 if let Some(mut display_link) =
404 DisplayLink::new(display_id, self.native_view.as_ptr() as *mut c_void, step).log_err()
405 {
406 display_link.start().log_err();
407 self.display_link = Some(display_link);
408 }
409 }
410
411 fn stop_display_link(&mut self) {
412 self.display_link = None;
413 }
414
415 fn is_fullscreen(&self) -> bool {
416 unsafe {
417 let style_mask = self.native_window.styleMask();
418 style_mask.contains(NSWindowStyleMask::NSFullScreenWindowMask)
419 }
420 }
421
422 fn bounds(&self) -> WindowBounds {
423 unsafe {
424 if self.is_fullscreen() {
425 return WindowBounds::Fullscreen;
426 }
427
428 let frame = self.frame();
429 let screen_size = self.native_window.screen().visibleFrame().into();
430 if frame.size == screen_size {
431 WindowBounds::Maximized
432 } else {
433 WindowBounds::Fixed(frame)
434 }
435 }
436 }
437
438 fn frame(&self) -> Bounds<GlobalPixels> {
439 let frame = unsafe { NSWindow::frame(self.native_window) };
440 global_bounds_from_ns_rect(frame)
441 }
442
443 fn content_size(&self) -> Size<Pixels> {
444 let NSSize { width, height, .. } =
445 unsafe { NSView::frame(self.native_window.contentView()) }.size;
446 size(px(width as f32), px(height as f32))
447 }
448
449 fn scale_factor(&self) -> f32 {
450 get_scale_factor(self.native_window)
451 }
452
453 fn update_drawable_size(&mut self, drawable_size: NSSize) {
454 self.renderer.update_drawable_size(Size {
455 width: drawable_size.width,
456 height: drawable_size.height,
457 })
458 }
459
460 fn titlebar_height(&self) -> Pixels {
461 unsafe {
462 let frame = NSWindow::frame(self.native_window);
463 let content_layout_rect: CGRect = msg_send![self.native_window, contentLayoutRect];
464 px((frame.size.height - content_layout_rect.size.height) as f32)
465 }
466 }
467
468 fn to_screen_ns_point(&self, point: Point<Pixels>) -> NSPoint {
469 unsafe {
470 let point = NSPoint::new(
471 point.x.into(),
472 (self.content_size().height - point.y).into(),
473 );
474 msg_send![self.native_window, convertPointToScreen: point]
475 }
476 }
477}
478
479unsafe impl Send for MacWindowState {}
480
481pub(crate) struct MacWindow(Arc<Mutex<MacWindowState>>);
482
483impl MacWindow {
484 pub fn open(
485 handle: AnyWindowHandle,
486 options: WindowOptions,
487 executor: ForegroundExecutor,
488 renderer_context: renderer::Context,
489 ) -> Self {
490 unsafe {
491 let pool = NSAutoreleasePool::new(nil);
492
493 let mut style_mask;
494 if let Some(titlebar) = options.titlebar.as_ref() {
495 style_mask = NSWindowStyleMask::NSClosableWindowMask
496 | NSWindowStyleMask::NSMiniaturizableWindowMask
497 | NSWindowStyleMask::NSResizableWindowMask
498 | NSWindowStyleMask::NSTitledWindowMask;
499
500 if titlebar.appears_transparent {
501 style_mask |= NSWindowStyleMask::NSFullSizeContentViewWindowMask;
502 }
503 } else {
504 style_mask = NSWindowStyleMask::NSTitledWindowMask
505 | NSWindowStyleMask::NSFullSizeContentViewWindowMask;
506 }
507
508 let native_window: id = match options.kind {
509 WindowKind::Normal => msg_send![WINDOW_CLASS, alloc],
510 WindowKind::PopUp => {
511 style_mask |= NSWindowStyleMaskNonactivatingPanel;
512 msg_send![PANEL_CLASS, alloc]
513 }
514 };
515
516 let display = options
517 .display_id
518 .and_then(MacDisplay::find_by_id)
519 .unwrap_or_else(MacDisplay::primary);
520
521 let mut target_screen = nil;
522 let screens = NSScreen::screens(nil);
523 let count: u64 = cocoa::foundation::NSArray::count(screens);
524 for i in 0..count {
525 let screen = cocoa::foundation::NSArray::objectAtIndex(screens, i);
526 let display_id = display_id_for_screen(screen);
527 if display_id == display.id().0 {
528 target_screen = screen;
529 break;
530 }
531 }
532
533 let window_rect = match options.bounds {
534 WindowBounds::Fullscreen => {
535 // Set a temporary size as we will asynchronously resize the window
536 NSRect::new(NSPoint::new(0., 0.), NSSize::new(1024., 768.))
537 }
538 WindowBounds::Maximized => {
539 let display_bounds = display.bounds();
540 global_bounds_to_ns_rect(display_bounds)
541 }
542 WindowBounds::Fixed(bounds) => {
543 let display_bounds = display.bounds();
544 if bounds.intersects(&display_bounds) {
545 global_bounds_to_ns_rect(bounds)
546 } else {
547 global_bounds_to_ns_rect(display_bounds)
548 }
549 }
550 };
551
552 let native_window = native_window.initWithContentRect_styleMask_backing_defer_screen_(
553 window_rect,
554 style_mask,
555 NSBackingStoreBuffered,
556 NO,
557 target_screen,
558 );
559 assert!(!native_window.is_null());
560 let () = msg_send![
561 native_window,
562 registerForDraggedTypes:
563 NSArray::arrayWithObject(nil, NSFilenamesPboardType)
564 ];
565
566 let native_view: id = msg_send![VIEW_CLASS, alloc];
567 let native_view = NSView::init(native_view);
568 assert!(!native_view.is_null());
569
570 let window_size = {
571 let bounds = match options.bounds {
572 WindowBounds::Fullscreen | WindowBounds::Maximized => {
573 native_window.screen().visibleFrame()
574 }
575 WindowBounds::Fixed(bounds) => global_bounds_to_ns_rect(bounds),
576 };
577 let scale = get_scale_factor(native_window);
578 size(
579 bounds.size.width as f32 * scale,
580 bounds.size.height as f32 * scale,
581 )
582 };
583
584 let window = Self(Arc::new(Mutex::new(MacWindowState {
585 handle,
586 executor,
587 native_window,
588 native_window_was_closed: false,
589 native_view: NonNull::new_unchecked(native_view),
590 display_link: None,
591 renderer: renderer::new_renderer(
592 renderer_context,
593 native_window as *mut _,
594 native_view as *mut _,
595 window_size,
596 ),
597 kind: options.kind,
598 request_frame_callback: None,
599 event_callback: None,
600 activate_callback: None,
601 resize_callback: None,
602 fullscreen_callback: None,
603 moved_callback: None,
604 should_close_callback: None,
605 close_callback: None,
606 appearance_changed_callback: None,
607 input_handler: None,
608 last_key_equivalent: None,
609 synthetic_drag_counter: 0,
610 last_fresh_keydown: None,
611 traffic_light_position: options
612 .titlebar
613 .as_ref()
614 .and_then(|titlebar| titlebar.traffic_light_position),
615 previous_modifiers_changed_event: None,
616 input_during_keydown: None,
617 previous_keydown_inserted_text: None,
618 external_files_dragged: false,
619 })));
620
621 (*native_window).set_ivar(
622 WINDOW_STATE_IVAR,
623 Arc::into_raw(window.0.clone()) as *const c_void,
624 );
625 native_window.setDelegate_(native_window);
626 (*native_view).set_ivar(
627 WINDOW_STATE_IVAR,
628 Arc::into_raw(window.0.clone()) as *const c_void,
629 );
630
631 if let Some(title) = options
632 .titlebar
633 .as_ref()
634 .and_then(|t| t.title.as_ref().map(AsRef::as_ref))
635 {
636 native_window.setTitle_(NSString::alloc(nil).init_str(title));
637 }
638
639 native_window.setMovable_(options.is_movable as BOOL);
640
641 if options
642 .titlebar
643 .map_or(true, |titlebar| titlebar.appears_transparent)
644 {
645 native_window.setTitlebarAppearsTransparent_(YES);
646 native_window.setTitleVisibility_(NSWindowTitleVisibility::NSWindowTitleHidden);
647 }
648
649 native_view.setAutoresizingMask_(NSViewWidthSizable | NSViewHeightSizable);
650 native_view.setWantsBestResolutionOpenGLSurface_(YES);
651
652 // From winit crate: On Mojave, views automatically become layer-backed shortly after
653 // being added to a native_window. Changing the layer-backedness of a view breaks the
654 // association between the view and its associated OpenGL context. To work around this,
655 // on we explicitly make the view layer-backed up front so that AppKit doesn't do it
656 // itself and break the association with its context.
657 native_view.setWantsLayer(YES);
658 let _: () = msg_send![
659 native_view,
660 setLayerContentsRedrawPolicy: NSViewLayerContentsRedrawDuringViewResize
661 ];
662
663 native_window.setContentView_(native_view.autorelease());
664 native_window.makeFirstResponder_(native_view);
665
666 if options.center {
667 native_window.center();
668 }
669
670 match options.kind {
671 WindowKind::Normal => {
672 native_window.setLevel_(NSNormalWindowLevel);
673 native_window.setAcceptsMouseMovedEvents_(YES);
674 }
675 WindowKind::PopUp => {
676 // Use a tracking area to allow receiving MouseMoved events even when
677 // the window or application aren't active, which is often the case
678 // e.g. for notification windows.
679 let tracking_area: id = msg_send![class!(NSTrackingArea), alloc];
680 let _: () = msg_send![
681 tracking_area,
682 initWithRect: NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.))
683 options: NSTrackingMouseEnteredAndExited | NSTrackingMouseMoved | NSTrackingActiveAlways | NSTrackingInVisibleRect
684 owner: native_view
685 userInfo: nil
686 ];
687 let _: () =
688 msg_send![native_view, addTrackingArea: tracking_area.autorelease()];
689
690 native_window.setLevel_(NSPopUpWindowLevel);
691 let _: () = msg_send![
692 native_window,
693 setAnimationBehavior: NSWindowAnimationBehaviorUtilityWindow
694 ];
695 native_window.setCollectionBehavior_(
696 NSWindowCollectionBehavior::NSWindowCollectionBehaviorCanJoinAllSpaces |
697 NSWindowCollectionBehavior::NSWindowCollectionBehaviorFullScreenAuxiliary
698 );
699 }
700 }
701 if options.focus {
702 native_window.makeKeyAndOrderFront_(nil);
703 } else if options.show {
704 native_window.orderFront_(nil);
705 }
706
707 if options.bounds == WindowBounds::Fullscreen {
708 // We need to toggle full screen asynchronously as doing so may
709 // call back into the platform handlers.
710 window.toggle_full_screen();
711 }
712
713 window.0.lock().move_traffic_light();
714
715 pool.drain();
716
717 window
718 }
719 }
720
721 pub fn active_window() -> Option<AnyWindowHandle> {
722 unsafe {
723 let app = NSApplication::sharedApplication(nil);
724 let main_window: id = msg_send![app, mainWindow];
725 if msg_send![main_window, isKindOfClass: WINDOW_CLASS] {
726 let handle = get_window_state(&*main_window).lock().handle;
727 Some(handle)
728 } else {
729 None
730 }
731 }
732 }
733}
734
735impl Drop for MacWindow {
736 fn drop(&mut self) {
737 let mut this = self.0.lock();
738 this.renderer.destroy();
739 let window = this.native_window;
740 this.display_link.take();
741 unsafe {
742 this.native_window.setDelegate_(nil);
743 }
744 if !this.native_window_was_closed {
745 this.executor
746 .spawn(async move {
747 unsafe {
748 window.close();
749 }
750 })
751 .detach();
752 }
753 }
754}
755
756impl PlatformWindow for MacWindow {
757 fn bounds(&self) -> WindowBounds {
758 self.0.as_ref().lock().bounds()
759 }
760
761 fn content_size(&self) -> Size<Pixels> {
762 self.0.as_ref().lock().content_size()
763 }
764
765 fn scale_factor(&self) -> f32 {
766 self.0.as_ref().lock().scale_factor()
767 }
768
769 fn titlebar_height(&self) -> Pixels {
770 self.0.as_ref().lock().titlebar_height()
771 }
772
773 fn appearance(&self) -> WindowAppearance {
774 unsafe {
775 let appearance: id = msg_send![self.0.lock().native_window, effectiveAppearance];
776 WindowAppearance::from_native(appearance)
777 }
778 }
779
780 fn display(&self) -> Rc<dyn PlatformDisplay> {
781 unsafe {
782 let screen = self.0.lock().native_window.screen();
783 let device_description: id = msg_send![screen, deviceDescription];
784 let screen_number: id = NSDictionary::valueForKey_(
785 device_description,
786 NSString::alloc(nil).init_str("NSScreenNumber"),
787 );
788
789 let screen_number: u32 = msg_send![screen_number, unsignedIntValue];
790
791 Rc::new(MacDisplay(screen_number))
792 }
793 }
794
795 fn mouse_position(&self) -> Point<Pixels> {
796 let position = unsafe {
797 self.0
798 .lock()
799 .native_window
800 .mouseLocationOutsideOfEventStream()
801 };
802 convert_mouse_position(position, self.content_size().height)
803 }
804
805 fn modifiers(&self) -> Modifiers {
806 unsafe {
807 let modifiers: NSEventModifierFlags = msg_send![class!(NSEvent), modifierFlags];
808
809 let control = modifiers.contains(NSEventModifierFlags::NSControlKeyMask);
810 let alt = modifiers.contains(NSEventModifierFlags::NSAlternateKeyMask);
811 let shift = modifiers.contains(NSEventModifierFlags::NSShiftKeyMask);
812 let command = modifiers.contains(NSEventModifierFlags::NSCommandKeyMask);
813 let function = modifiers.contains(NSEventModifierFlags::NSFunctionKeyMask);
814
815 Modifiers {
816 control,
817 alt,
818 shift,
819 command,
820 function,
821 }
822 }
823 }
824
825 fn as_any_mut(&mut self) -> &mut dyn Any {
826 self
827 }
828
829 fn set_input_handler(&mut self, input_handler: PlatformInputHandler) {
830 self.0.as_ref().lock().input_handler = Some(input_handler);
831 }
832
833 fn take_input_handler(&mut self) -> Option<PlatformInputHandler> {
834 self.0.as_ref().lock().input_handler.take()
835 }
836
837 fn prompt(
838 &self,
839 level: PromptLevel,
840 msg: &str,
841 detail: Option<&str>,
842 answers: &[&str],
843 ) -> Option<oneshot::Receiver<usize>> {
844 // macOs applies overrides to modal window buttons after they are added.
845 // Two most important for this logic are:
846 // * Buttons with "Cancel" title will be displayed as the last buttons in the modal
847 // * Last button added to the modal via `addButtonWithTitle` stays focused
848 // * Focused buttons react on "space"/" " keypresses
849 // * Usage of `keyEquivalent`, `makeFirstResponder` or `setInitialFirstResponder` does not change the focus
850 //
851 // See also https://developer.apple.com/documentation/appkit/nsalert/1524532-addbuttonwithtitle#discussion
852 // ```
853 // By default, the first button has a key equivalent of Return,
854 // any button with a title of “Cancel” has a key equivalent of Escape,
855 // 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).
856 // ```
857 //
858 // To avoid situations when the last element added is "Cancel" and it gets the focus
859 // (hence stealing both ESC and Space shortcuts), we find and add one non-Cancel button
860 // last, so it gets focus and a Space shortcut.
861 // This way, "Save this file? Yes/No/Cancel"-ish modals will get all three buttons mapped with a key.
862 let latest_non_cancel_label = answers
863 .iter()
864 .enumerate()
865 .rev()
866 .find(|(_, &label)| label != "Cancel")
867 .filter(|&(label_index, _)| label_index > 0);
868
869 unsafe {
870 let alert: id = msg_send![class!(NSAlert), alloc];
871 let alert: id = msg_send![alert, init];
872 let alert_style = match level {
873 PromptLevel::Info => 1,
874 PromptLevel::Warning => 0,
875 PromptLevel::Critical => 2,
876 };
877 let _: () = msg_send![alert, setAlertStyle: alert_style];
878 let _: () = msg_send![alert, setMessageText: ns_string(msg)];
879 if let Some(detail) = detail {
880 let _: () = msg_send![alert, setInformativeText: ns_string(detail)];
881 }
882
883 for (ix, answer) in answers
884 .iter()
885 .enumerate()
886 .filter(|&(ix, _)| Some(ix) != latest_non_cancel_label.map(|(ix, _)| ix))
887 {
888 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
889 let _: () = msg_send![button, setTag: ix as NSInteger];
890 }
891 if let Some((ix, answer)) = latest_non_cancel_label {
892 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
893 let _: () = msg_send![button, setTag: ix as NSInteger];
894 }
895
896 let (done_tx, done_rx) = oneshot::channel();
897 let done_tx = Cell::new(Some(done_tx));
898 let block = ConcreteBlock::new(move |answer: NSInteger| {
899 if let Some(done_tx) = done_tx.take() {
900 let _ = done_tx.send(answer.try_into().unwrap());
901 }
902 });
903 let block = block.copy();
904 let native_window = self.0.lock().native_window;
905 let executor = self.0.lock().executor.clone();
906 executor
907 .spawn(async move {
908 let _: () = msg_send![
909 alert,
910 beginSheetModalForWindow: native_window
911 completionHandler: block
912 ];
913 })
914 .detach();
915
916 Some(done_rx)
917 }
918 }
919
920 fn activate(&self) {
921 let window = self.0.lock().native_window;
922 let executor = self.0.lock().executor.clone();
923 executor
924 .spawn(async move {
925 unsafe {
926 let _: () = msg_send![window, makeKeyAndOrderFront: nil];
927 }
928 })
929 .detach();
930 }
931
932 fn set_title(&mut self, title: &str) {
933 unsafe {
934 let app = NSApplication::sharedApplication(nil);
935 let window = self.0.lock().native_window;
936 let title = ns_string(title);
937 let _: () = msg_send![app, changeWindowsItem:window title:title filename:false];
938 let _: () = msg_send![window, setTitle: title];
939 self.0.lock().move_traffic_light();
940 }
941 }
942
943 fn set_edited(&mut self, edited: bool) {
944 unsafe {
945 let window = self.0.lock().native_window;
946 msg_send![window, setDocumentEdited: edited as BOOL]
947 }
948
949 // Changing the document edited state resets the traffic light position,
950 // so we have to move it again.
951 self.0.lock().move_traffic_light();
952 }
953
954 fn show_character_palette(&self) {
955 let this = self.0.lock();
956 let window = this.native_window;
957 this.executor
958 .spawn(async move {
959 unsafe {
960 let app = NSApplication::sharedApplication(nil);
961 let _: () = msg_send![app, orderFrontCharacterPalette: window];
962 }
963 })
964 .detach();
965 }
966
967 fn minimize(&self) {
968 let window = self.0.lock().native_window;
969 unsafe {
970 window.miniaturize_(nil);
971 }
972 }
973
974 fn zoom(&self) {
975 let this = self.0.lock();
976 let window = this.native_window;
977 this.executor
978 .spawn(async move {
979 unsafe {
980 window.zoom_(nil);
981 }
982 })
983 .detach();
984 }
985
986 fn toggle_full_screen(&self) {
987 let this = self.0.lock();
988 let window = this.native_window;
989 this.executor
990 .spawn(async move {
991 unsafe {
992 window.toggleFullScreen_(nil);
993 }
994 })
995 .detach();
996 }
997
998 fn on_request_frame(&self, callback: Box<dyn FnMut()>) {
999 self.0.as_ref().lock().request_frame_callback = Some(callback);
1000 }
1001
1002 fn on_input(&self, callback: Box<dyn FnMut(PlatformInput) -> bool>) {
1003 self.0.as_ref().lock().event_callback = Some(callback);
1004 }
1005
1006 fn on_active_status_change(&self, callback: Box<dyn FnMut(bool)>) {
1007 self.0.as_ref().lock().activate_callback = Some(callback);
1008 }
1009
1010 fn on_resize(&self, callback: Box<dyn FnMut(Size<Pixels>, f32)>) {
1011 self.0.as_ref().lock().resize_callback = Some(callback);
1012 }
1013
1014 fn on_fullscreen(&self, callback: Box<dyn FnMut(bool)>) {
1015 self.0.as_ref().lock().fullscreen_callback = Some(callback);
1016 }
1017
1018 fn on_moved(&self, callback: Box<dyn FnMut()>) {
1019 self.0.as_ref().lock().moved_callback = Some(callback);
1020 }
1021
1022 fn on_should_close(&self, callback: Box<dyn FnMut() -> bool>) {
1023 self.0.as_ref().lock().should_close_callback = Some(callback);
1024 }
1025
1026 fn on_close(&self, callback: Box<dyn FnOnce()>) {
1027 self.0.as_ref().lock().close_callback = Some(callback);
1028 }
1029
1030 fn on_appearance_changed(&self, callback: Box<dyn FnMut()>) {
1031 self.0.lock().appearance_changed_callback = Some(callback);
1032 }
1033
1034 fn is_topmost_for_position(&self, position: Point<Pixels>) -> bool {
1035 let self_borrow = self.0.lock();
1036 let self_handle = self_borrow.handle;
1037
1038 unsafe {
1039 let app = NSApplication::sharedApplication(nil);
1040
1041 // Convert back to screen coordinates
1042 let screen_point = self_borrow.to_screen_ns_point(position);
1043
1044 let window_number: NSInteger = msg_send![class!(NSWindow), windowNumberAtPoint:screen_point belowWindowWithWindowNumber:0];
1045 let top_most_window: id = msg_send![app, windowWithWindowNumber: window_number];
1046
1047 let is_panel: BOOL = msg_send![top_most_window, isKindOfClass: PANEL_CLASS];
1048 let is_window: BOOL = msg_send![top_most_window, isKindOfClass: WINDOW_CLASS];
1049 if is_panel == YES || is_window == YES {
1050 let topmost_window = get_window_state(&*top_most_window).lock().handle;
1051 topmost_window == self_handle
1052 } else {
1053 // Someone else's window is on top
1054 false
1055 }
1056 }
1057 }
1058
1059 fn draw(&self, scene: &crate::Scene) {
1060 let mut this = self.0.lock();
1061 this.renderer.draw(scene);
1062 }
1063
1064 fn sprite_atlas(&self) -> Arc<dyn PlatformAtlas> {
1065 self.0.lock().renderer.sprite_atlas().clone()
1066 }
1067}
1068
1069impl HasWindowHandle for MacWindow {
1070 fn window_handle(
1071 &self,
1072 ) -> Result<raw_window_handle::WindowHandle<'_>, raw_window_handle::HandleError> {
1073 // SAFETY: The AppKitWindowHandle is a wrapper around a pointer to an NSView
1074 unsafe {
1075 Ok(WindowHandle::borrow_raw(RawWindowHandle::AppKit(
1076 AppKitWindowHandle::new(self.0.lock().native_view.cast()),
1077 )))
1078 }
1079 }
1080}
1081
1082impl HasDisplayHandle for MacWindow {
1083 fn display_handle(
1084 &self,
1085 ) -> Result<raw_window_handle::DisplayHandle<'_>, raw_window_handle::HandleError> {
1086 // SAFETY: This is a no-op on macOS
1087 unsafe { Ok(DisplayHandle::borrow_raw(AppKitDisplayHandle::new().into())) }
1088 }
1089}
1090
1091fn get_scale_factor(native_window: id) -> f32 {
1092 let factor = unsafe {
1093 let screen: id = msg_send![native_window, screen];
1094 NSScreen::backingScaleFactor(screen) as f32
1095 };
1096
1097 // We are not certain what triggers this, but it seems that sometimes
1098 // this method would return 0 (https://github.com/zed-industries/zed/issues/6412)
1099 // It seems most likely that this would happen if the window has no screen
1100 // (if it is off-screen), though we'd expect to see viewDidChangeBackingProperties before
1101 // it was rendered for real.
1102 // Regardless, attempt to avoid the issue here.
1103 if factor == 0.0 {
1104 2.
1105 } else {
1106 factor
1107 }
1108}
1109
1110unsafe fn get_window_state(object: &Object) -> Arc<Mutex<MacWindowState>> {
1111 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1112 let rc1 = Arc::from_raw(raw as *mut Mutex<MacWindowState>);
1113 let rc2 = rc1.clone();
1114 mem::forget(rc1);
1115 rc2
1116}
1117
1118unsafe fn drop_window_state(object: &Object) {
1119 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1120 Arc::from_raw(raw as *mut Mutex<MacWindowState>);
1121}
1122
1123extern "C" fn yes(_: &Object, _: Sel) -> BOOL {
1124 YES
1125}
1126
1127extern "C" fn dealloc_window(this: &Object, _: Sel) {
1128 unsafe {
1129 drop_window_state(this);
1130 let _: () = msg_send![super(this, class!(NSWindow)), dealloc];
1131 }
1132}
1133
1134extern "C" fn dealloc_view(this: &Object, _: Sel) {
1135 unsafe {
1136 drop_window_state(this);
1137 let _: () = msg_send![super(this, class!(NSView)), dealloc];
1138 }
1139}
1140
1141extern "C" fn handle_key_equivalent(this: &Object, _: Sel, native_event: id) -> BOOL {
1142 handle_key_event(this, native_event, true)
1143}
1144
1145extern "C" fn handle_key_down(this: &Object, _: Sel, native_event: id) {
1146 handle_key_event(this, native_event, false);
1147}
1148
1149// Things to test if you're modifying this method:
1150// Brazilian layout:
1151// - `" space` should type a quote
1152// - `" backspace` should delete the marked quote
1153// - `" up` should type the quote, unmark it, and move up one line
1154// - `" cmd-down` should not leave a marked quote behind (it maybe should dispatch the key though?)
1155// - `cmd-ctrl-space` and clicking on an emoji should type it
1156// Czech (QWERTY) layout:
1157// - in vim mode `option-4` should go to end of line (same as $)
1158extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent: bool) -> BOOL {
1159 let window_state = unsafe { get_window_state(this) };
1160 let mut lock = window_state.as_ref().lock();
1161
1162 let window_height = lock.content_size().height;
1163 let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) };
1164
1165 if let Some(PlatformInput::KeyDown(mut event)) = event {
1166 // For certain keystrokes, macOS will first dispatch a "key equivalent" event.
1167 // If that event isn't handled, it will then dispatch a "key down" event. GPUI
1168 // makes no distinction between these two types of events, so we need to ignore
1169 // the "key down" event if we've already just processed its "key equivalent" version.
1170 if key_equivalent {
1171 lock.last_key_equivalent = Some(event.clone());
1172 } else if lock.last_key_equivalent.take().as_ref() == Some(&event) {
1173 return NO;
1174 }
1175
1176 let keydown = event.keystroke.clone();
1177 let fn_modifier = keydown.modifiers.function;
1178 // Ignore events from held-down keys after some of the initially-pressed keys
1179 // were released.
1180 if event.is_held {
1181 if lock.last_fresh_keydown.as_ref() != Some(&keydown) {
1182 return YES;
1183 }
1184 } else {
1185 lock.last_fresh_keydown = Some(keydown.clone());
1186 }
1187 lock.input_during_keydown = Some(SmallVec::new());
1188 drop(lock);
1189
1190 // Send the event to the input context for IME handling, unless the `fn` modifier is
1191 // being pressed.
1192 // this will call back into `insert_text`, etc.
1193 if !fn_modifier {
1194 unsafe {
1195 let input_context: id = msg_send![this, inputContext];
1196 let _: BOOL = msg_send![input_context, handleEvent: native_event];
1197 }
1198 }
1199
1200 let mut handled = false;
1201 let mut lock = window_state.lock();
1202 let previous_keydown_inserted_text = lock.previous_keydown_inserted_text.take();
1203 let mut input_during_keydown = lock.input_during_keydown.take().unwrap();
1204 let mut callback = lock.event_callback.take();
1205 drop(lock);
1206
1207 let last_ime = input_during_keydown.pop();
1208 // on a brazilian keyboard typing `"` and then hitting `up` will cause two IME
1209 // events, one to unmark the quote, and one to send the up arrow.
1210 for ime in input_during_keydown {
1211 send_to_input_handler(this, ime);
1212 }
1213
1214 let is_composing =
1215 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1216 .flatten()
1217 .is_some();
1218
1219 if let Some(ime) = last_ime {
1220 if let ImeInput::InsertText(text, _) = &ime {
1221 if !is_composing {
1222 window_state.lock().previous_keydown_inserted_text = Some(text.clone());
1223 if let Some(callback) = callback.as_mut() {
1224 event.keystroke.ime_key = Some(text.clone());
1225 handled = callback(PlatformInput::KeyDown(event));
1226 }
1227 }
1228 }
1229
1230 if !handled {
1231 handled = true;
1232 send_to_input_handler(this, ime);
1233 }
1234 } else if !is_composing {
1235 let is_held = event.is_held;
1236
1237 if let Some(callback) = callback.as_mut() {
1238 handled = callback(PlatformInput::KeyDown(event));
1239 }
1240
1241 if !handled && is_held {
1242 if let Some(text) = previous_keydown_inserted_text {
1243 // MacOS IME is a bit funky, and even when you've told it there's nothing to
1244 // enter it will still swallow certain keys (e.g. 'f', 'j') and not others
1245 // (e.g. 'n'). This is a problem for certain kinds of views, like the terminal.
1246 with_input_handler(this, |input_handler| {
1247 if input_handler.selected_text_range().is_none() {
1248 handled = true;
1249 input_handler.replace_text_in_range(None, &text)
1250 }
1251 });
1252 window_state.lock().previous_keydown_inserted_text = Some(text);
1253 }
1254 }
1255 }
1256
1257 window_state.lock().event_callback = callback;
1258
1259 handled as BOOL
1260 } else {
1261 NO
1262 }
1263}
1264
1265extern "C" fn handle_view_event(this: &Object, _: Sel, native_event: id) {
1266 let window_state = unsafe { get_window_state(this) };
1267 let weak_window_state = Arc::downgrade(&window_state);
1268 let mut lock = window_state.as_ref().lock();
1269 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1270
1271 let window_height = lock.content_size().height;
1272 let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) };
1273
1274 if let Some(mut event) = event {
1275 match &mut event {
1276 PlatformInput::MouseDown(
1277 event @ MouseDownEvent {
1278 button: MouseButton::Left,
1279 modifiers: Modifiers { control: true, .. },
1280 ..
1281 },
1282 ) => {
1283 // On mac, a ctrl-left click should be handled as a right click.
1284 *event = MouseDownEvent {
1285 button: MouseButton::Right,
1286 modifiers: Modifiers {
1287 control: false,
1288 ..event.modifiers
1289 },
1290 click_count: 1,
1291 ..*event
1292 };
1293 }
1294
1295 // Because we map a ctrl-left_down to a right_down -> right_up let's ignore
1296 // the ctrl-left_up to avoid having a mismatch in button down/up events if the
1297 // user is still holding ctrl when releasing the left mouse button
1298 PlatformInput::MouseUp(
1299 event @ MouseUpEvent {
1300 button: MouseButton::Left,
1301 modifiers: Modifiers { control: true, .. },
1302 ..
1303 },
1304 ) => {
1305 *event = MouseUpEvent {
1306 button: MouseButton::Right,
1307 modifiers: Modifiers {
1308 control: false,
1309 ..event.modifiers
1310 },
1311 click_count: 1,
1312 ..*event
1313 };
1314 }
1315
1316 _ => {}
1317 };
1318
1319 match &event {
1320 PlatformInput::MouseMove(
1321 event @ MouseMoveEvent {
1322 pressed_button: Some(_),
1323 ..
1324 },
1325 ) => {
1326 // Synthetic drag is used for selecting long buffer contents while buffer is being scrolled.
1327 // External file drag and drop is able to emit its own synthetic mouse events which will conflict
1328 // with these ones.
1329 if !lock.external_files_dragged {
1330 lock.synthetic_drag_counter += 1;
1331 let executor = lock.executor.clone();
1332 executor
1333 .spawn(synthetic_drag(
1334 weak_window_state,
1335 lock.synthetic_drag_counter,
1336 event.clone(),
1337 ))
1338 .detach();
1339 }
1340 }
1341
1342 PlatformInput::MouseMove(_) if !(is_active || lock.kind == WindowKind::PopUp) => return,
1343
1344 PlatformInput::MouseUp(MouseUpEvent { .. }) => {
1345 lock.synthetic_drag_counter += 1;
1346 }
1347
1348 PlatformInput::ModifiersChanged(ModifiersChangedEvent { modifiers }) => {
1349 // Only raise modifiers changed event when they have actually changed
1350 if let Some(PlatformInput::ModifiersChanged(ModifiersChangedEvent {
1351 modifiers: prev_modifiers,
1352 })) = &lock.previous_modifiers_changed_event
1353 {
1354 if prev_modifiers == modifiers {
1355 return;
1356 }
1357 }
1358
1359 lock.previous_modifiers_changed_event = Some(event.clone());
1360 }
1361
1362 _ => {}
1363 }
1364
1365 if let Some(mut callback) = lock.event_callback.take() {
1366 drop(lock);
1367 callback(event);
1368 window_state.lock().event_callback = Some(callback);
1369 }
1370 }
1371}
1372
1373// Allows us to receive `cmd-.` (the shortcut for closing a dialog)
1374// https://bugs.eclipse.org/bugs/show_bug.cgi?id=300620#c6
1375extern "C" fn cancel_operation(this: &Object, _sel: Sel, _sender: id) {
1376 let window_state = unsafe { get_window_state(this) };
1377 let mut lock = window_state.as_ref().lock();
1378
1379 let keystroke = Keystroke {
1380 modifiers: Default::default(),
1381 key: ".".into(),
1382 ime_key: None,
1383 };
1384 let event = PlatformInput::KeyDown(KeyDownEvent {
1385 keystroke: keystroke.clone(),
1386 is_held: false,
1387 });
1388
1389 lock.last_fresh_keydown = Some(keystroke);
1390 if let Some(mut callback) = lock.event_callback.take() {
1391 drop(lock);
1392 callback(event);
1393 window_state.lock().event_callback = Some(callback);
1394 }
1395}
1396
1397extern "C" fn window_did_change_occlusion_state(this: &Object, _: Sel, _: id) {
1398 let window_state = unsafe { get_window_state(this) };
1399 let lock = &mut *window_state.lock();
1400 unsafe {
1401 if lock
1402 .native_window
1403 .occlusionState()
1404 .contains(NSWindowOcclusionState::NSWindowOcclusionStateVisible)
1405 {
1406 lock.start_display_link();
1407 } else {
1408 lock.stop_display_link();
1409 }
1410 }
1411}
1412
1413extern "C" fn window_did_resize(this: &Object, _: Sel, _: id) {
1414 let window_state = unsafe { get_window_state(this) };
1415 window_state.as_ref().lock().move_traffic_light();
1416}
1417
1418extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) {
1419 window_fullscreen_changed(this, true);
1420}
1421
1422extern "C" fn window_will_exit_fullscreen(this: &Object, _: Sel, _: id) {
1423 window_fullscreen_changed(this, false);
1424}
1425
1426fn window_fullscreen_changed(this: &Object, is_fullscreen: bool) {
1427 let window_state = unsafe { get_window_state(this) };
1428 let mut lock = window_state.as_ref().lock();
1429 if let Some(mut callback) = lock.fullscreen_callback.take() {
1430 drop(lock);
1431 callback(is_fullscreen);
1432 window_state.lock().fullscreen_callback = Some(callback);
1433 }
1434}
1435
1436extern "C" fn window_did_move(this: &Object, _: Sel, _: id) {
1437 let window_state = unsafe { get_window_state(this) };
1438 let mut lock = window_state.as_ref().lock();
1439 if let Some(mut callback) = lock.moved_callback.take() {
1440 drop(lock);
1441 callback();
1442 window_state.lock().moved_callback = Some(callback);
1443 }
1444}
1445
1446extern "C" fn window_did_change_screen(this: &Object, _: Sel, _: id) {
1447 let window_state = unsafe { get_window_state(this) };
1448 let mut lock = window_state.as_ref().lock();
1449 lock.start_display_link();
1450}
1451
1452extern "C" fn window_did_change_key_status(this: &Object, selector: Sel, _: id) {
1453 let window_state = unsafe { get_window_state(this) };
1454 let lock = window_state.lock();
1455 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1456
1457 // When opening a pop-up while the application isn't active, Cocoa sends a spurious
1458 // `windowDidBecomeKey` message to the previous key window even though that window
1459 // isn't actually key. This causes a bug if the application is later activated while
1460 // the pop-up is still open, making it impossible to activate the previous key window
1461 // even if the pop-up gets closed. The only way to activate it again is to de-activate
1462 // the app and re-activate it, which is a pretty bad UX.
1463 // The following code detects the spurious event and invokes `resignKeyWindow`:
1464 // in theory, we're not supposed to invoke this method manually but it balances out
1465 // the spurious `becomeKeyWindow` event and helps us work around that bug.
1466 if selector == sel!(windowDidBecomeKey:) && !is_active {
1467 unsafe {
1468 let _: () = msg_send![lock.native_window, resignKeyWindow];
1469 return;
1470 }
1471 }
1472
1473 let executor = lock.executor.clone();
1474 drop(lock);
1475 executor
1476 .spawn(async move {
1477 let mut lock = window_state.as_ref().lock();
1478 if let Some(mut callback) = lock.activate_callback.take() {
1479 drop(lock);
1480 callback(is_active);
1481 window_state.lock().activate_callback = Some(callback);
1482 };
1483 })
1484 .detach();
1485}
1486
1487extern "C" fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
1488 let window_state = unsafe { get_window_state(this) };
1489 let mut lock = window_state.as_ref().lock();
1490 if let Some(mut callback) = lock.should_close_callback.take() {
1491 drop(lock);
1492 let should_close = callback();
1493 window_state.lock().should_close_callback = Some(callback);
1494 should_close as BOOL
1495 } else {
1496 YES
1497 }
1498}
1499
1500extern "C" fn close_window(this: &Object, _: Sel) {
1501 unsafe {
1502 let close_callback = {
1503 let window_state = get_window_state(this);
1504 let mut lock = window_state.as_ref().lock();
1505 lock.native_window_was_closed = true;
1506 lock.close_callback.take()
1507 };
1508
1509 if let Some(callback) = close_callback {
1510 callback();
1511 }
1512
1513 let _: () = msg_send![super(this, class!(NSWindow)), close];
1514 }
1515}
1516
1517extern "C" fn make_backing_layer(this: &Object, _: Sel) -> id {
1518 let window_state = unsafe { get_window_state(this) };
1519 let window_state = window_state.as_ref().lock();
1520 window_state.renderer.layer_ptr() as id
1521}
1522
1523extern "C" fn view_did_change_backing_properties(this: &Object, _: Sel) {
1524 let window_state = unsafe { get_window_state(this) };
1525 let mut lock = window_state.as_ref().lock();
1526
1527 let scale_factor = lock.scale_factor() as f64;
1528 let size = lock.content_size();
1529 let drawable_size: NSSize = NSSize {
1530 width: f64::from(size.width) * scale_factor,
1531 height: f64::from(size.height) * scale_factor,
1532 };
1533 unsafe {
1534 let _: () = msg_send![
1535 lock.renderer.layer(),
1536 setContentsScale: scale_factor
1537 ];
1538 }
1539
1540 lock.update_drawable_size(drawable_size);
1541
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.as_ref().lock().resize_callback = Some(callback);
1548 };
1549}
1550
1551extern "C" fn set_frame_size(this: &Object, _: Sel, size: NSSize) {
1552 let window_state = unsafe { get_window_state(this) };
1553 let mut lock = window_state.as_ref().lock();
1554
1555 if lock.content_size() == size.into() {
1556 return;
1557 }
1558
1559 unsafe {
1560 let _: () = msg_send![super(this, class!(NSView)), setFrameSize: size];
1561 }
1562
1563 let scale_factor = lock.scale_factor() as f64;
1564 let drawable_size: NSSize = NSSize {
1565 width: size.width * scale_factor,
1566 height: size.height * scale_factor,
1567 };
1568
1569 lock.update_drawable_size(drawable_size);
1570
1571 drop(lock);
1572 let mut lock = window_state.lock();
1573 if let Some(mut callback) = lock.resize_callback.take() {
1574 let content_size = lock.content_size();
1575 let scale_factor = lock.scale_factor();
1576 drop(lock);
1577 callback(content_size, scale_factor);
1578 window_state.lock().resize_callback = Some(callback);
1579 };
1580}
1581
1582extern "C" fn display_layer(this: &Object, _: Sel, _: id) {
1583 let window_state = unsafe { get_window_state(this) };
1584 let mut lock = window_state.lock();
1585 if let Some(mut callback) = lock.request_frame_callback.take() {
1586 #[cfg(not(feature = "macos-blade"))]
1587 lock.renderer.set_presents_with_transaction(true);
1588 lock.stop_display_link();
1589 drop(lock);
1590 callback();
1591
1592 let mut lock = window_state.lock();
1593 lock.request_frame_callback = Some(callback);
1594 #[cfg(not(feature = "macos-blade"))]
1595 lock.renderer.set_presents_with_transaction(false);
1596 lock.start_display_link();
1597 }
1598}
1599
1600unsafe extern "C" fn step(view: *mut c_void) {
1601 let view = view as id;
1602 let window_state = unsafe { get_window_state(&*view) };
1603 let mut lock = window_state.lock();
1604
1605 if let Some(mut callback) = lock.request_frame_callback.take() {
1606 drop(lock);
1607 callback();
1608 window_state.lock().request_frame_callback = Some(callback);
1609 }
1610}
1611
1612extern "C" fn valid_attributes_for_marked_text(_: &Object, _: Sel) -> id {
1613 unsafe { msg_send![class!(NSArray), array] }
1614}
1615
1616extern "C" fn has_marked_text(this: &Object, _: Sel) -> BOOL {
1617 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1618 .flatten()
1619 .is_some() as BOOL
1620}
1621
1622extern "C" fn marked_range(this: &Object, _: Sel) -> NSRange {
1623 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1624 .flatten()
1625 .map_or(NSRange::invalid(), |range| range.into())
1626}
1627
1628extern "C" fn selected_range(this: &Object, _: Sel) -> NSRange {
1629 with_input_handler(this, |input_handler| input_handler.selected_text_range())
1630 .flatten()
1631 .map_or(NSRange::invalid(), |range| range.into())
1632}
1633
1634extern "C" fn first_rect_for_character_range(
1635 this: &Object,
1636 _: Sel,
1637 range: NSRange,
1638 _: id,
1639) -> NSRect {
1640 let frame = unsafe {
1641 let window = get_window_state(this).lock().native_window;
1642 NSView::frame(window)
1643 };
1644 with_input_handler(this, |input_handler| {
1645 input_handler.bounds_for_range(range.to_range()?)
1646 })
1647 .flatten()
1648 .map_or(
1649 NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)),
1650 |bounds| {
1651 NSRect::new(
1652 NSPoint::new(
1653 frame.origin.x + bounds.origin.x.0 as f64,
1654 frame.origin.y + frame.size.height
1655 - bounds.origin.y.0 as f64
1656 - bounds.size.height.0 as f64,
1657 ),
1658 NSSize::new(bounds.size.width.0 as f64, bounds.size.height.0 as f64),
1659 )
1660 },
1661 )
1662}
1663
1664extern "C" fn insert_text(this: &Object, _: Sel, text: id, replacement_range: NSRange) {
1665 unsafe {
1666 let is_attributed_string: BOOL =
1667 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1668 let text: id = if is_attributed_string == YES {
1669 msg_send![text, string]
1670 } else {
1671 text
1672 };
1673 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1674 .to_str()
1675 .unwrap();
1676 let replacement_range = replacement_range.to_range();
1677 send_to_input_handler(
1678 this,
1679 ImeInput::InsertText(text.to_string(), replacement_range),
1680 );
1681 }
1682}
1683
1684extern "C" fn set_marked_text(
1685 this: &Object,
1686 _: Sel,
1687 text: id,
1688 selected_range: NSRange,
1689 replacement_range: NSRange,
1690) {
1691 unsafe {
1692 let is_attributed_string: BOOL =
1693 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1694 let text: id = if is_attributed_string == YES {
1695 msg_send![text, string]
1696 } else {
1697 text
1698 };
1699 let selected_range = selected_range.to_range();
1700 let replacement_range = replacement_range.to_range();
1701 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1702 .to_str()
1703 .unwrap();
1704
1705 send_to_input_handler(
1706 this,
1707 ImeInput::SetMarkedText(text.to_string(), replacement_range, selected_range),
1708 );
1709 }
1710}
1711extern "C" fn unmark_text(this: &Object, _: Sel) {
1712 send_to_input_handler(this, ImeInput::UnmarkText);
1713}
1714
1715extern "C" fn attributed_substring_for_proposed_range(
1716 this: &Object,
1717 _: Sel,
1718 range: NSRange,
1719 _actual_range: *mut c_void,
1720) -> id {
1721 with_input_handler(this, |input_handler| {
1722 let range = range.to_range()?;
1723 if range.is_empty() {
1724 return None;
1725 }
1726
1727 let selected_text = input_handler.text_for_range(range)?;
1728 unsafe {
1729 let string: id = msg_send![class!(NSAttributedString), alloc];
1730 let string: id = msg_send![string, initWithString: ns_string(&selected_text)];
1731 Some(string)
1732 }
1733 })
1734 .flatten()
1735 .unwrap_or(nil)
1736}
1737
1738extern "C" fn do_command_by_selector(_: &Object, _: Sel, _: Sel) {}
1739
1740extern "C" fn view_did_change_effective_appearance(this: &Object, _: Sel) {
1741 unsafe {
1742 let state = get_window_state(this);
1743 let mut lock = state.as_ref().lock();
1744 if let Some(mut callback) = lock.appearance_changed_callback.take() {
1745 drop(lock);
1746 callback();
1747 state.lock().appearance_changed_callback = Some(callback);
1748 }
1749 }
1750}
1751
1752extern "C" fn accepts_first_mouse(this: &Object, _: Sel, _: id) -> BOOL {
1753 unsafe {
1754 let state = get_window_state(this);
1755 let lock = state.as_ref().lock();
1756 if lock.kind == WindowKind::PopUp {
1757 YES
1758 } else {
1759 NO
1760 }
1761 }
1762}
1763
1764extern "C" fn dragging_entered(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1765 let window_state = unsafe { get_window_state(this) };
1766 if send_new_event(&window_state, {
1767 let position = drag_event_position(&window_state, dragging_info);
1768 let paths = external_paths_from_event(dragging_info);
1769 PlatformInput::FileDrop(FileDropEvent::Entered { position, paths })
1770 }) {
1771 window_state.lock().external_files_dragged = true;
1772 NSDragOperationCopy
1773 } else {
1774 NSDragOperationNone
1775 }
1776}
1777
1778extern "C" fn dragging_updated(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1779 let window_state = unsafe { get_window_state(this) };
1780 let position = drag_event_position(&window_state, dragging_info);
1781 if send_new_event(
1782 &window_state,
1783 PlatformInput::FileDrop(FileDropEvent::Pending { position }),
1784 ) {
1785 NSDragOperationCopy
1786 } else {
1787 NSDragOperationNone
1788 }
1789}
1790
1791extern "C" fn dragging_exited(this: &Object, _: Sel, _: id) {
1792 let window_state = unsafe { get_window_state(this) };
1793 send_new_event(
1794 &window_state,
1795 PlatformInput::FileDrop(FileDropEvent::Exited),
1796 );
1797 window_state.lock().external_files_dragged = false;
1798}
1799
1800extern "C" fn perform_drag_operation(this: &Object, _: Sel, dragging_info: id) -> BOOL {
1801 let window_state = unsafe { get_window_state(this) };
1802 let position = drag_event_position(&window_state, dragging_info);
1803 if send_new_event(
1804 &window_state,
1805 PlatformInput::FileDrop(FileDropEvent::Submit { position }),
1806 ) {
1807 YES
1808 } else {
1809 NO
1810 }
1811}
1812
1813fn external_paths_from_event(dragging_info: *mut Object) -> ExternalPaths {
1814 let mut paths = SmallVec::new();
1815 let pasteboard: id = unsafe { msg_send![dragging_info, draggingPasteboard] };
1816 let filenames = unsafe { NSPasteboard::propertyListForType(pasteboard, NSFilenamesPboardType) };
1817 for file in unsafe { filenames.iter() } {
1818 let path = unsafe {
1819 let f = NSString::UTF8String(file);
1820 CStr::from_ptr(f).to_string_lossy().into_owned()
1821 };
1822 paths.push(PathBuf::from(path))
1823 }
1824 ExternalPaths(paths)
1825}
1826
1827extern "C" fn conclude_drag_operation(this: &Object, _: Sel, _: id) {
1828 let window_state = unsafe { get_window_state(this) };
1829 send_new_event(
1830 &window_state,
1831 PlatformInput::FileDrop(FileDropEvent::Exited),
1832 );
1833}
1834
1835async fn synthetic_drag(
1836 window_state: Weak<Mutex<MacWindowState>>,
1837 drag_id: usize,
1838 event: MouseMoveEvent,
1839) {
1840 loop {
1841 Timer::after(Duration::from_millis(16)).await;
1842 if let Some(window_state) = window_state.upgrade() {
1843 let mut lock = window_state.lock();
1844 if lock.synthetic_drag_counter == drag_id {
1845 if let Some(mut callback) = lock.event_callback.take() {
1846 drop(lock);
1847 callback(PlatformInput::MouseMove(event.clone()));
1848 window_state.lock().event_callback = Some(callback);
1849 }
1850 } else {
1851 break;
1852 }
1853 }
1854 }
1855}
1856
1857fn send_new_event(window_state_lock: &Mutex<MacWindowState>, e: PlatformInput) -> bool {
1858 let window_state = window_state_lock.lock().event_callback.take();
1859 if let Some(mut callback) = window_state {
1860 callback(e);
1861 window_state_lock.lock().event_callback = Some(callback);
1862 true
1863 } else {
1864 false
1865 }
1866}
1867
1868fn drag_event_position(window_state: &Mutex<MacWindowState>, dragging_info: id) -> Point<Pixels> {
1869 let drag_location: NSPoint = unsafe { msg_send![dragging_info, draggingLocation] };
1870 convert_mouse_position(drag_location, window_state.lock().content_size().height)
1871}
1872
1873fn with_input_handler<F, R>(window: &Object, f: F) -> Option<R>
1874where
1875 F: FnOnce(&mut PlatformInputHandler) -> R,
1876{
1877 let window_state = unsafe { get_window_state(window) };
1878 let mut lock = window_state.as_ref().lock();
1879 if let Some(mut input_handler) = lock.input_handler.take() {
1880 drop(lock);
1881 let result = f(&mut input_handler);
1882 window_state.lock().input_handler = Some(input_handler);
1883 Some(result)
1884 } else {
1885 None
1886 }
1887}
1888
1889fn send_to_input_handler(window: &Object, ime: ImeInput) {
1890 unsafe {
1891 let window_state = get_window_state(window);
1892 let mut lock = window_state.lock();
1893 if let Some(ime_input) = lock.input_during_keydown.as_mut() {
1894 ime_input.push(ime);
1895 return;
1896 }
1897 if let Some(mut input_handler) = lock.input_handler.take() {
1898 drop(lock);
1899 match ime {
1900 ImeInput::InsertText(text, range) => {
1901 input_handler.replace_text_in_range(range, &text)
1902 }
1903 ImeInput::SetMarkedText(text, range, marked_range) => {
1904 input_handler.replace_and_mark_text_in_range(range, &text, marked_range)
1905 }
1906 ImeInput::UnmarkText => input_handler.unmark_text(),
1907 }
1908 window_state.lock().input_handler = Some(input_handler);
1909 }
1910 }
1911}
1912
1913unsafe fn display_id_for_screen(screen: id) -> CGDirectDisplayID {
1914 let device_description = NSScreen::deviceDescription(screen);
1915 let screen_number_key: id = NSString::alloc(nil).init_str("NSScreenNumber");
1916 let screen_number = device_description.objectForKey_(screen_number_key);
1917 let screen_number: NSUInteger = msg_send![screen_number, unsignedIntegerValue];
1918 screen_number as CGDirectDisplayID
1919}