1use super::{ns_string, renderer, MacDisplay, NSRange, NSStringExt};
2use crate::{
3 platform::PlatformInputHandler, point, px, size, AnyWindowHandle, Bounds, DisplayLink,
4 ExternalPaths, FileDropEvent, ForegroundExecutor, KeyDownEvent, Keystroke, Modifiers,
5 ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, Pixels,
6 PlatformAtlas, PlatformDisplay, PlatformInput, PlatformWindow, Point, PromptLevel, Size, Timer,
7 WindowAppearance, WindowBackgroundAppearance, WindowBounds, WindowKind, WindowParams,
8};
9use block::ConcreteBlock;
10use cocoa::{
11 appkit::{
12 CGPoint, NSApplication, NSBackingStoreBuffered, NSColor, NSEvent, 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 as rwh;
35use smallvec::SmallVec;
36use std::{
37 cell::Cell,
38 ffi::{c_void, CStr},
39 mem,
40 ops::Range,
41 path::PathBuf,
42 ptr::{self, NonNull},
43 rc::Rc,
44 sync::{Arc, Weak},
45 time::Duration,
46};
47use util::ResultExt;
48
49const WINDOW_STATE_IVAR: &str = "windowState";
50
51static mut WINDOW_CLASS: *const Class = ptr::null();
52static mut PANEL_CLASS: *const Class = ptr::null();
53static mut VIEW_CLASS: *const Class = ptr::null();
54
55#[allow(non_upper_case_globals)]
56const NSWindowStyleMaskNonactivatingPanel: NSWindowStyleMask =
57 unsafe { NSWindowStyleMask::from_bits_unchecked(1 << 7) };
58#[allow(non_upper_case_globals)]
59const NSNormalWindowLevel: NSInteger = 0;
60#[allow(non_upper_case_globals)]
61const NSPopUpWindowLevel: NSInteger = 101;
62#[allow(non_upper_case_globals)]
63const NSTrackingMouseEnteredAndExited: NSUInteger = 0x01;
64#[allow(non_upper_case_globals)]
65const NSTrackingMouseMoved: NSUInteger = 0x02;
66#[allow(non_upper_case_globals)]
67const NSTrackingActiveAlways: NSUInteger = 0x80;
68#[allow(non_upper_case_globals)]
69const NSTrackingInVisibleRect: NSUInteger = 0x200;
70#[allow(non_upper_case_globals)]
71const NSWindowAnimationBehaviorUtilityWindow: NSInteger = 4;
72#[allow(non_upper_case_globals)]
73const NSViewLayerContentsRedrawDuringViewResize: NSInteger = 2;
74// https://developer.apple.com/documentation/appkit/nsdragoperation
75type NSDragOperation = NSUInteger;
76#[allow(non_upper_case_globals)]
77const NSDragOperationNone: NSDragOperation = 0;
78#[allow(non_upper_case_globals)]
79const NSDragOperationCopy: NSDragOperation = 1;
80
81#[link(name = "CoreGraphics", kind = "framework")]
82extern "C" {
83 // Widely used private APIs; Apple uses them for their Terminal.app.
84 fn CGSMainConnectionID() -> id;
85 fn CGSSetWindowBackgroundBlurRadius(
86 connection_id: id,
87 window_id: NSInteger,
88 radius: i64,
89 ) -> i32;
90}
91
92#[ctor]
93unsafe fn build_classes() {
94 WINDOW_CLASS = build_window_class("GPUIWindow", class!(NSWindow));
95 PANEL_CLASS = build_window_class("GPUIPanel", class!(NSPanel));
96 VIEW_CLASS = {
97 let mut decl = ClassDecl::new("GPUIView", class!(NSView)).unwrap();
98 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
99
100 decl.add_method(sel!(dealloc), dealloc_view as extern "C" fn(&Object, Sel));
101
102 decl.add_method(
103 sel!(performKeyEquivalent:),
104 handle_key_equivalent as extern "C" fn(&Object, Sel, id) -> BOOL,
105 );
106 decl.add_method(
107 sel!(keyDown:),
108 handle_key_down as extern "C" fn(&Object, Sel, id),
109 );
110 decl.add_method(
111 sel!(mouseDown:),
112 handle_view_event as extern "C" fn(&Object, Sel, id),
113 );
114 decl.add_method(
115 sel!(mouseUp:),
116 handle_view_event as extern "C" fn(&Object, Sel, id),
117 );
118 decl.add_method(
119 sel!(rightMouseDown:),
120 handle_view_event as extern "C" fn(&Object, Sel, id),
121 );
122 decl.add_method(
123 sel!(rightMouseUp:),
124 handle_view_event as extern "C" fn(&Object, Sel, id),
125 );
126 decl.add_method(
127 sel!(otherMouseDown:),
128 handle_view_event as extern "C" fn(&Object, Sel, id),
129 );
130 decl.add_method(
131 sel!(otherMouseUp:),
132 handle_view_event as extern "C" fn(&Object, Sel, id),
133 );
134 decl.add_method(
135 sel!(mouseMoved:),
136 handle_view_event as extern "C" fn(&Object, Sel, id),
137 );
138 decl.add_method(
139 sel!(mouseExited:),
140 handle_view_event as extern "C" fn(&Object, Sel, id),
141 );
142 decl.add_method(
143 sel!(mouseDragged:),
144 handle_view_event as extern "C" fn(&Object, Sel, id),
145 );
146 decl.add_method(
147 sel!(scrollWheel:),
148 handle_view_event as extern "C" fn(&Object, Sel, id),
149 );
150 decl.add_method(
151 sel!(flagsChanged:),
152 handle_view_event as extern "C" fn(&Object, Sel, id),
153 );
154 decl.add_method(
155 sel!(cancelOperation:),
156 cancel_operation as extern "C" fn(&Object, Sel, id),
157 );
158
159 decl.add_method(
160 sel!(makeBackingLayer),
161 make_backing_layer as extern "C" fn(&Object, Sel) -> id,
162 );
163
164 decl.add_protocol(Protocol::get("CALayerDelegate").unwrap());
165 decl.add_method(
166 sel!(viewDidChangeBackingProperties),
167 view_did_change_backing_properties as extern "C" fn(&Object, Sel),
168 );
169 decl.add_method(
170 sel!(setFrameSize:),
171 set_frame_size as extern "C" fn(&Object, Sel, NSSize),
172 );
173 decl.add_method(
174 sel!(displayLayer:),
175 display_layer as extern "C" fn(&Object, Sel, id),
176 );
177
178 decl.add_protocol(Protocol::get("NSTextInputClient").unwrap());
179 decl.add_method(
180 sel!(validAttributesForMarkedText),
181 valid_attributes_for_marked_text as extern "C" fn(&Object, Sel) -> id,
182 );
183 decl.add_method(
184 sel!(hasMarkedText),
185 has_marked_text as extern "C" fn(&Object, Sel) -> BOOL,
186 );
187 decl.add_method(
188 sel!(markedRange),
189 marked_range as extern "C" fn(&Object, Sel) -> NSRange,
190 );
191 decl.add_method(
192 sel!(selectedRange),
193 selected_range as extern "C" fn(&Object, Sel) -> NSRange,
194 );
195 decl.add_method(
196 sel!(firstRectForCharacterRange:actualRange:),
197 first_rect_for_character_range as extern "C" fn(&Object, Sel, NSRange, id) -> NSRect,
198 );
199 decl.add_method(
200 sel!(insertText:replacementRange:),
201 insert_text as extern "C" fn(&Object, Sel, id, NSRange),
202 );
203 decl.add_method(
204 sel!(setMarkedText:selectedRange:replacementRange:),
205 set_marked_text as extern "C" fn(&Object, Sel, id, NSRange, NSRange),
206 );
207 decl.add_method(sel!(unmarkText), unmark_text as extern "C" fn(&Object, Sel));
208 decl.add_method(
209 sel!(attributedSubstringForProposedRange:actualRange:),
210 attributed_substring_for_proposed_range
211 as extern "C" fn(&Object, Sel, NSRange, *mut c_void) -> id,
212 );
213 decl.add_method(
214 sel!(viewDidChangeEffectiveAppearance),
215 view_did_change_effective_appearance as extern "C" fn(&Object, Sel),
216 );
217
218 // Suppress beep on keystrokes with modifier keys.
219 decl.add_method(
220 sel!(doCommandBySelector:),
221 do_command_by_selector as extern "C" fn(&Object, Sel, Sel),
222 );
223
224 decl.add_method(
225 sel!(acceptsFirstMouse:),
226 accepts_first_mouse as extern "C" fn(&Object, Sel, id) -> BOOL,
227 );
228
229 decl.register()
230 };
231}
232
233pub(crate) fn convert_mouse_position(position: NSPoint, window_height: Pixels) -> Point<Pixels> {
234 point(
235 px(position.x as f32),
236 // MacOS screen coordinates are relative to bottom left
237 window_height - px(position.y as f32),
238 )
239}
240
241unsafe fn build_window_class(name: &'static str, superclass: &Class) -> *const Class {
242 let mut decl = ClassDecl::new(name, superclass).unwrap();
243 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
244 decl.add_method(sel!(dealloc), dealloc_window as extern "C" fn(&Object, Sel));
245 decl.add_method(
246 sel!(canBecomeMainWindow),
247 yes as extern "C" fn(&Object, Sel) -> BOOL,
248 );
249 decl.add_method(
250 sel!(canBecomeKeyWindow),
251 yes as extern "C" fn(&Object, Sel) -> BOOL,
252 );
253 decl.add_method(
254 sel!(windowDidResize:),
255 window_did_resize as extern "C" fn(&Object, Sel, id),
256 );
257 decl.add_method(
258 sel!(windowDidChangeOcclusionState:),
259 window_did_change_occlusion_state as extern "C" fn(&Object, Sel, id),
260 );
261 decl.add_method(
262 sel!(windowWillEnterFullScreen:),
263 window_will_enter_fullscreen as extern "C" fn(&Object, Sel, id),
264 );
265 decl.add_method(
266 sel!(windowDidMove:),
267 window_did_move as extern "C" fn(&Object, Sel, id),
268 );
269 decl.add_method(
270 sel!(windowDidChangeScreen:),
271 window_did_change_screen as extern "C" fn(&Object, Sel, id),
272 );
273 decl.add_method(
274 sel!(windowDidBecomeKey:),
275 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
276 );
277 decl.add_method(
278 sel!(windowDidResignKey:),
279 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
280 );
281 decl.add_method(
282 sel!(windowShouldClose:),
283 window_should_close as extern "C" fn(&Object, Sel, id) -> BOOL,
284 );
285
286 decl.add_method(sel!(close), close_window as extern "C" fn(&Object, Sel));
287
288 decl.add_method(
289 sel!(draggingEntered:),
290 dragging_entered as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
291 );
292 decl.add_method(
293 sel!(draggingUpdated:),
294 dragging_updated as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
295 );
296 decl.add_method(
297 sel!(draggingExited:),
298 dragging_exited as extern "C" fn(&Object, Sel, id),
299 );
300 decl.add_method(
301 sel!(performDragOperation:),
302 perform_drag_operation as extern "C" fn(&Object, Sel, id) -> BOOL,
303 );
304 decl.add_method(
305 sel!(concludeDragOperation:),
306 conclude_drag_operation as extern "C" fn(&Object, Sel, id),
307 );
308
309 decl.register()
310}
311
312#[allow(clippy::enum_variant_names)]
313#[derive(Clone, Debug)]
314enum ImeInput {
315 InsertText(String, Option<Range<usize>>),
316 SetMarkedText(String, Option<Range<usize>>, Option<Range<usize>>),
317 UnmarkText,
318}
319
320struct MacWindowState {
321 handle: AnyWindowHandle,
322 executor: ForegroundExecutor,
323 native_window: id,
324 native_view: NonNull<Object>,
325 display_link: Option<DisplayLink>,
326 renderer: renderer::Renderer,
327 request_frame_callback: Option<Box<dyn FnMut()>>,
328 event_callback: Option<Box<dyn FnMut(PlatformInput) -> crate::DispatchEventResult>>,
329 activate_callback: Option<Box<dyn FnMut(bool)>>,
330 resize_callback: Option<Box<dyn FnMut(Size<Pixels>, f32)>>,
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 traffic_light_position: Option<Point<Pixels>>,
339 previous_modifiers_changed_event: Option<PlatformInput>,
340 // State tracking what the IME did after the last request
341 last_ime_inputs: Option<SmallVec<[(String, Option<Range<usize>>); 1]>>,
342 previous_keydown_inserted_text: Option<String>,
343 external_files_dragged: bool,
344 // Whether the next left-mouse click is also the focusing click.
345 first_mouse: bool,
346 fullscreen_restore_bounds: Bounds<Pixels>,
347 ime_composing: bool,
348}
349
350impl MacWindowState {
351 fn move_traffic_light(&self) {
352 if let Some(traffic_light_position) = self.traffic_light_position {
353 if self.is_fullscreen() {
354 // Moving traffic lights while fullscreen doesn't work,
355 // see https://github.com/zed-industries/zed/issues/4712
356 return;
357 }
358
359 let titlebar_height = self.titlebar_height();
360
361 unsafe {
362 let close_button: id = msg_send![
363 self.native_window,
364 standardWindowButton: NSWindowButton::NSWindowCloseButton
365 ];
366 let min_button: id = msg_send![
367 self.native_window,
368 standardWindowButton: NSWindowButton::NSWindowMiniaturizeButton
369 ];
370 let zoom_button: id = msg_send![
371 self.native_window,
372 standardWindowButton: NSWindowButton::NSWindowZoomButton
373 ];
374
375 let mut close_button_frame: CGRect = msg_send![close_button, frame];
376 let mut min_button_frame: CGRect = msg_send![min_button, frame];
377 let mut zoom_button_frame: CGRect = msg_send![zoom_button, frame];
378 let mut origin = point(
379 traffic_light_position.x,
380 titlebar_height
381 - traffic_light_position.y
382 - px(close_button_frame.size.height as f32),
383 );
384 let button_spacing =
385 px((min_button_frame.origin.x - close_button_frame.origin.x) as f32);
386
387 close_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
388 let _: () = msg_send![close_button, setFrame: close_button_frame];
389 origin.x += button_spacing;
390
391 min_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
392 let _: () = msg_send![min_button, setFrame: min_button_frame];
393 origin.x += button_spacing;
394
395 zoom_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
396 let _: () = msg_send![zoom_button, setFrame: zoom_button_frame];
397 origin.x += button_spacing;
398 }
399 }
400 }
401
402 fn start_display_link(&mut self) {
403 self.stop_display_link();
404 unsafe {
405 if !self
406 .native_window
407 .occlusionState()
408 .contains(NSWindowOcclusionState::NSWindowOcclusionStateVisible)
409 {
410 return;
411 }
412 }
413 let display_id = unsafe { display_id_for_screen(self.native_window.screen()) };
414 if let Some(mut display_link) =
415 DisplayLink::new(display_id, self.native_view.as_ptr() as *mut c_void, step).log_err()
416 {
417 display_link.start().log_err();
418 self.display_link = Some(display_link);
419 }
420 }
421
422 fn stop_display_link(&mut self) {
423 self.display_link = None;
424 }
425
426 fn is_maximized(&self) -> bool {
427 unsafe {
428 let bounds = self.bounds();
429 let screen_size = self.native_window.screen().visibleFrame().into();
430 bounds.size == screen_size
431 }
432 }
433
434 fn is_fullscreen(&self) -> bool {
435 unsafe {
436 let style_mask = self.native_window.styleMask();
437 style_mask.contains(NSWindowStyleMask::NSFullScreenWindowMask)
438 }
439 }
440
441 fn bounds(&self) -> Bounds<Pixels> {
442 let mut window_frame = unsafe { NSWindow::frame(self.native_window) };
443 let screen_frame = unsafe {
444 let screen = NSWindow::screen(self.native_window);
445 NSScreen::frame(screen)
446 };
447
448 // Flip the y coordinate to be top-left origin
449 window_frame.origin.y =
450 screen_frame.size.height - window_frame.origin.y - window_frame.size.height;
451
452 let bounds = Bounds::new(
453 point(
454 px((window_frame.origin.x - screen_frame.origin.x) as f32),
455 px((window_frame.origin.y + screen_frame.origin.y) as f32),
456 ),
457 size(
458 px(window_frame.size.width as f32),
459 px(window_frame.size.height as f32),
460 ),
461 );
462 bounds
463 }
464
465 fn content_size(&self) -> Size<Pixels> {
466 let NSSize { width, height, .. } =
467 unsafe { NSView::frame(self.native_window.contentView()) }.size;
468 size(px(width as f32), px(height as f32))
469 }
470
471 fn scale_factor(&self) -> f32 {
472 get_scale_factor(self.native_window)
473 }
474
475 fn titlebar_height(&self) -> Pixels {
476 unsafe {
477 let frame = NSWindow::frame(self.native_window);
478 let content_layout_rect: CGRect = msg_send![self.native_window, contentLayoutRect];
479 px((frame.size.height - content_layout_rect.size.height) as f32)
480 }
481 }
482
483 fn window_bounds(&self) -> WindowBounds {
484 if self.is_fullscreen() {
485 WindowBounds::Fullscreen(self.fullscreen_restore_bounds)
486 } else {
487 WindowBounds::Windowed(self.bounds())
488 }
489 }
490}
491
492unsafe impl Send for MacWindowState {}
493
494pub(crate) struct MacWindow(Arc<Mutex<MacWindowState>>);
495
496impl MacWindow {
497 pub fn open(
498 handle: AnyWindowHandle,
499 WindowParams {
500 bounds,
501 titlebar,
502 kind,
503 is_movable,
504 focus,
505 show,
506 display_id,
507 window_min_size,
508 }: WindowParams,
509 executor: ForegroundExecutor,
510 renderer_context: renderer::Context,
511 ) -> Self {
512 unsafe {
513 let pool = NSAutoreleasePool::new(nil);
514
515 let mut style_mask;
516 if let Some(titlebar) = titlebar.as_ref() {
517 style_mask = NSWindowStyleMask::NSClosableWindowMask
518 | NSWindowStyleMask::NSMiniaturizableWindowMask
519 | NSWindowStyleMask::NSResizableWindowMask
520 | NSWindowStyleMask::NSTitledWindowMask;
521
522 if titlebar.appears_transparent {
523 style_mask |= NSWindowStyleMask::NSFullSizeContentViewWindowMask;
524 }
525 } else {
526 style_mask = NSWindowStyleMask::NSTitledWindowMask
527 | NSWindowStyleMask::NSFullSizeContentViewWindowMask;
528 }
529
530 let native_window: id = match kind {
531 WindowKind::Normal => msg_send![WINDOW_CLASS, alloc],
532 WindowKind::PopUp => {
533 style_mask |= NSWindowStyleMaskNonactivatingPanel;
534 msg_send![PANEL_CLASS, alloc]
535 }
536 };
537
538 let display = display_id
539 .and_then(MacDisplay::find_by_id)
540 .unwrap_or_else(|| MacDisplay::primary());
541
542 let mut target_screen = nil;
543 let mut screen_frame = None;
544
545 let screens = NSScreen::screens(nil);
546 let count: u64 = cocoa::foundation::NSArray::count(screens);
547 for i in 0..count {
548 let screen = cocoa::foundation::NSArray::objectAtIndex(screens, i);
549 let frame = NSScreen::frame(screen);
550 let display_id = display_id_for_screen(screen);
551 if display_id == display.0 {
552 screen_frame = Some(frame);
553 target_screen = screen;
554 }
555 }
556
557 let screen_frame = screen_frame.unwrap_or_else(|| {
558 let screen = NSScreen::mainScreen(nil);
559 target_screen = screen;
560 NSScreen::frame(screen)
561 });
562
563 let window_rect = NSRect::new(
564 NSPoint::new(
565 screen_frame.origin.x + bounds.origin.x.0 as f64,
566 screen_frame.origin.y
567 + (display.bounds().size.height - bounds.origin.y).0 as f64,
568 ),
569 NSSize::new(bounds.size.width.0 as f64, bounds.size.height.0 as f64),
570 );
571
572 let native_window = native_window.initWithContentRect_styleMask_backing_defer_screen_(
573 window_rect,
574 style_mask,
575 NSBackingStoreBuffered,
576 NO,
577 target_screen,
578 );
579 assert!(!native_window.is_null());
580 let () = msg_send![
581 native_window,
582 registerForDraggedTypes:
583 NSArray::arrayWithObject(nil, NSFilenamesPboardType)
584 ];
585 let () = msg_send![
586 native_window,
587 setReleasedWhenClosed: NO
588 ];
589
590 let native_view: id = msg_send![VIEW_CLASS, alloc];
591 let native_view = NSView::init(native_view);
592 assert!(!native_view.is_null());
593
594 let mut window = Self(Arc::new(Mutex::new(MacWindowState {
595 handle,
596 executor,
597 native_window,
598 native_view: NonNull::new_unchecked(native_view),
599 display_link: None,
600 renderer: renderer::new_renderer(
601 renderer_context,
602 native_window as *mut _,
603 native_view as *mut _,
604 bounds.size.map(|pixels| pixels.0),
605 false,
606 ),
607 request_frame_callback: None,
608 event_callback: None,
609 activate_callback: None,
610 resize_callback: None,
611 moved_callback: None,
612 should_close_callback: None,
613 close_callback: None,
614 appearance_changed_callback: None,
615 input_handler: None,
616 last_key_equivalent: None,
617 synthetic_drag_counter: 0,
618 traffic_light_position: titlebar
619 .as_ref()
620 .and_then(|titlebar| titlebar.traffic_light_position),
621 previous_modifiers_changed_event: None,
622 last_ime_inputs: None,
623 previous_keydown_inserted_text: None,
624 external_files_dragged: false,
625 first_mouse: false,
626 fullscreen_restore_bounds: Bounds::default(),
627 ime_composing: false,
628 })));
629
630 (*native_window).set_ivar(
631 WINDOW_STATE_IVAR,
632 Arc::into_raw(window.0.clone()) as *const c_void,
633 );
634 native_window.setDelegate_(native_window);
635 (*native_view).set_ivar(
636 WINDOW_STATE_IVAR,
637 Arc::into_raw(window.0.clone()) as *const c_void,
638 );
639
640 if let Some(title) = titlebar
641 .as_ref()
642 .and_then(|t| t.title.as_ref().map(AsRef::as_ref))
643 {
644 window.set_title(title);
645 }
646
647 native_window.setMovable_(is_movable as BOOL);
648
649 if let Some(window_min_size) = window_min_size {
650 native_window.setContentMinSize_(NSSize {
651 width: window_min_size.width.to_f64(),
652 height: window_min_size.height.to_f64(),
653 });
654 }
655
656 if titlebar.map_or(true, |titlebar| titlebar.appears_transparent) {
657 native_window.setTitlebarAppearsTransparent_(YES);
658 native_window.setTitleVisibility_(NSWindowTitleVisibility::NSWindowTitleHidden);
659 }
660
661 native_view.setAutoresizingMask_(NSViewWidthSizable | NSViewHeightSizable);
662 native_view.setWantsBestResolutionOpenGLSurface_(YES);
663
664 // From winit crate: On Mojave, views automatically become layer-backed shortly after
665 // being added to a native_window. Changing the layer-backedness of a view breaks the
666 // association between the view and its associated OpenGL context. To work around this,
667 // on we explicitly make the view layer-backed up front so that AppKit doesn't do it
668 // itself and break the association with its context.
669 native_view.setWantsLayer(YES);
670 let _: () = msg_send![
671 native_view,
672 setLayerContentsRedrawPolicy: NSViewLayerContentsRedrawDuringViewResize
673 ];
674
675 native_window.setContentView_(native_view.autorelease());
676 native_window.makeFirstResponder_(native_view);
677
678 match kind {
679 WindowKind::Normal => {
680 native_window.setLevel_(NSNormalWindowLevel);
681 native_window.setAcceptsMouseMovedEvents_(YES);
682 }
683 WindowKind::PopUp => {
684 // Use a tracking area to allow receiving MouseMoved events even when
685 // the window or application aren't active, which is often the case
686 // e.g. for notification windows.
687 let tracking_area: id = msg_send![class!(NSTrackingArea), alloc];
688 let _: () = msg_send![
689 tracking_area,
690 initWithRect: NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.))
691 options: NSTrackingMouseEnteredAndExited | NSTrackingMouseMoved | NSTrackingActiveAlways | NSTrackingInVisibleRect
692 owner: native_view
693 userInfo: nil
694 ];
695 let _: () =
696 msg_send![native_view, addTrackingArea: tracking_area.autorelease()];
697
698 native_window.setLevel_(NSPopUpWindowLevel);
699 let _: () = msg_send![
700 native_window,
701 setAnimationBehavior: NSWindowAnimationBehaviorUtilityWindow
702 ];
703 native_window.setCollectionBehavior_(
704 NSWindowCollectionBehavior::NSWindowCollectionBehaviorCanJoinAllSpaces |
705 NSWindowCollectionBehavior::NSWindowCollectionBehaviorFullScreenAuxiliary
706 );
707 }
708 }
709
710 if focus {
711 native_window.makeKeyAndOrderFront_(nil);
712 } else if show {
713 native_window.orderFront_(nil);
714 }
715
716 // Set the initial position of the window to the specified origin.
717 // Although we already specified the position using `initWithContentRect_styleMask_backing_defer_screen_`,
718 // the window position might be incorrect if the main screen (the screen that contains the window that has focus)
719 // is different from the primary screen.
720 NSWindow::setFrameTopLeftPoint_(native_window, window_rect.origin);
721 window.0.lock().move_traffic_light();
722
723 pool.drain();
724
725 window
726 }
727 }
728
729 pub fn active_window() -> Option<AnyWindowHandle> {
730 unsafe {
731 let app = NSApplication::sharedApplication(nil);
732 let main_window: id = msg_send![app, mainWindow];
733 if msg_send![main_window, isKindOfClass: WINDOW_CLASS] {
734 let handle = get_window_state(&*main_window).lock().handle;
735 Some(handle)
736 } else {
737 None
738 }
739 }
740 }
741
742 pub fn ordered_windows() -> Vec<AnyWindowHandle> {
743 unsafe {
744 let app = NSApplication::sharedApplication(nil);
745 let windows: id = msg_send![app, orderedWindows];
746 let count: NSUInteger = msg_send![windows, count];
747
748 let mut window_handles = Vec::new();
749 for i in 0..count {
750 let window: id = msg_send![windows, objectAtIndex:i];
751 if msg_send![window, isKindOfClass: WINDOW_CLASS] {
752 let handle = get_window_state(&*window).lock().handle;
753 window_handles.push(handle);
754 }
755 }
756
757 window_handles
758 }
759 }
760}
761
762impl Drop for MacWindow {
763 fn drop(&mut self) {
764 let mut this = self.0.lock();
765 this.renderer.destroy();
766 let window = this.native_window;
767 this.display_link.take();
768 unsafe {
769 this.native_window.setDelegate_(nil);
770 }
771 this.executor
772 .spawn(async move {
773 unsafe {
774 window.close();
775 window.autorelease();
776 }
777 })
778 .detach();
779 }
780}
781
782impl PlatformWindow for MacWindow {
783 fn bounds(&self) -> Bounds<Pixels> {
784 self.0.as_ref().lock().bounds()
785 }
786
787 fn window_bounds(&self) -> WindowBounds {
788 self.0.as_ref().lock().window_bounds()
789 }
790
791 fn is_maximized(&self) -> bool {
792 self.0.as_ref().lock().is_maximized()
793 }
794
795 fn content_size(&self) -> Size<Pixels> {
796 self.0.as_ref().lock().content_size()
797 }
798
799 fn scale_factor(&self) -> f32 {
800 self.0.as_ref().lock().scale_factor()
801 }
802
803 fn appearance(&self) -> WindowAppearance {
804 unsafe {
805 let appearance: id = msg_send![self.0.lock().native_window, effectiveAppearance];
806 WindowAppearance::from_native(appearance)
807 }
808 }
809
810 fn display(&self) -> Option<Rc<dyn PlatformDisplay>> {
811 unsafe {
812 let screen = self.0.lock().native_window.screen();
813 let device_description: id = msg_send![screen, deviceDescription];
814 let screen_number: id = NSDictionary::valueForKey_(
815 device_description,
816 NSString::alloc(nil).init_str("NSScreenNumber"),
817 );
818
819 let screen_number: u32 = msg_send![screen_number, unsignedIntValue];
820
821 Some(Rc::new(MacDisplay(screen_number)))
822 }
823 }
824
825 fn mouse_position(&self) -> Point<Pixels> {
826 let position = unsafe {
827 self.0
828 .lock()
829 .native_window
830 .mouseLocationOutsideOfEventStream()
831 };
832 convert_mouse_position(position, self.content_size().height)
833 }
834
835 fn modifiers(&self) -> Modifiers {
836 unsafe {
837 let modifiers: NSEventModifierFlags = msg_send![class!(NSEvent), modifierFlags];
838
839 let control = modifiers.contains(NSEventModifierFlags::NSControlKeyMask);
840 let alt = modifiers.contains(NSEventModifierFlags::NSAlternateKeyMask);
841 let shift = modifiers.contains(NSEventModifierFlags::NSShiftKeyMask);
842 let command = modifiers.contains(NSEventModifierFlags::NSCommandKeyMask);
843 let function = modifiers.contains(NSEventModifierFlags::NSFunctionKeyMask);
844
845 Modifiers {
846 control,
847 alt,
848 shift,
849 platform: command,
850 function,
851 }
852 }
853 }
854
855 fn set_input_handler(&mut self, input_handler: PlatformInputHandler) {
856 self.0.as_ref().lock().input_handler = Some(input_handler);
857 }
858
859 fn take_input_handler(&mut self) -> Option<PlatformInputHandler> {
860 self.0.as_ref().lock().input_handler.take()
861 }
862
863 fn prompt(
864 &self,
865 level: PromptLevel,
866 msg: &str,
867 detail: Option<&str>,
868 answers: &[&str],
869 ) -> Option<oneshot::Receiver<usize>> {
870 // macOs applies overrides to modal window buttons after they are added.
871 // Two most important for this logic are:
872 // * Buttons with "Cancel" title will be displayed as the last buttons in the modal
873 // * Last button added to the modal via `addButtonWithTitle` stays focused
874 // * Focused buttons react on "space"/" " keypresses
875 // * Usage of `keyEquivalent`, `makeFirstResponder` or `setInitialFirstResponder` does not change the focus
876 //
877 // See also https://developer.apple.com/documentation/appkit/nsalert/1524532-addbuttonwithtitle#discussion
878 // ```
879 // By default, the first button has a key equivalent of Return,
880 // any button with a title of “Cancel” has a key equivalent of Escape,
881 // 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).
882 // ```
883 //
884 // To avoid situations when the last element added is "Cancel" and it gets the focus
885 // (hence stealing both ESC and Space shortcuts), we find and add one non-Cancel button
886 // last, so it gets focus and a Space shortcut.
887 // This way, "Save this file? Yes/No/Cancel"-ish modals will get all three buttons mapped with a key.
888 let latest_non_cancel_label = answers
889 .iter()
890 .enumerate()
891 .rev()
892 .find(|(_, &label)| label != "Cancel")
893 .filter(|&(label_index, _)| label_index > 0);
894
895 unsafe {
896 let alert: id = msg_send![class!(NSAlert), alloc];
897 let alert: id = msg_send![alert, init];
898 let alert_style = match level {
899 PromptLevel::Info => 1,
900 PromptLevel::Warning => 0,
901 PromptLevel::Critical => 2,
902 };
903 let _: () = msg_send![alert, setAlertStyle: alert_style];
904 let _: () = msg_send![alert, setMessageText: ns_string(msg)];
905 if let Some(detail) = detail {
906 let _: () = msg_send![alert, setInformativeText: ns_string(detail)];
907 }
908
909 for (ix, answer) in answers
910 .iter()
911 .enumerate()
912 .filter(|&(ix, _)| Some(ix) != latest_non_cancel_label.map(|(ix, _)| ix))
913 {
914 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
915 let _: () = msg_send![button, setTag: ix as NSInteger];
916 }
917 if let Some((ix, answer)) = latest_non_cancel_label {
918 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
919 let _: () = msg_send![button, setTag: ix as NSInteger];
920 }
921
922 let (done_tx, done_rx) = oneshot::channel();
923 let done_tx = Cell::new(Some(done_tx));
924 let block = ConcreteBlock::new(move |answer: NSInteger| {
925 if let Some(done_tx) = done_tx.take() {
926 let _ = done_tx.send(answer.try_into().unwrap());
927 }
928 });
929 let block = block.copy();
930 let native_window = self.0.lock().native_window;
931 let executor = self.0.lock().executor.clone();
932 executor
933 .spawn(async move {
934 let _: () = msg_send![
935 alert,
936 beginSheetModalForWindow: native_window
937 completionHandler: block
938 ];
939 })
940 .detach();
941
942 Some(done_rx)
943 }
944 }
945
946 fn activate(&self) {
947 let window = self.0.lock().native_window;
948 let executor = self.0.lock().executor.clone();
949 executor
950 .spawn(async move {
951 unsafe {
952 let _: () = msg_send![window, makeKeyAndOrderFront: nil];
953 }
954 })
955 .detach();
956 }
957
958 fn is_active(&self) -> bool {
959 unsafe { self.0.lock().native_window.isKeyWindow() == YES }
960 }
961
962 // is_hovered is unused on macOS. See WindowContext::is_window_hovered.
963 fn is_hovered(&self) -> bool {
964 false
965 }
966
967 fn set_title(&mut self, title: &str) {
968 unsafe {
969 let app = NSApplication::sharedApplication(nil);
970 let window = self.0.lock().native_window;
971 let title = ns_string(title);
972 let _: () = msg_send![app, changeWindowsItem:window title:title filename:false];
973 let _: () = msg_send![window, setTitle: title];
974 self.0.lock().move_traffic_light();
975 }
976 }
977
978 fn set_app_id(&mut self, _app_id: &str) {}
979
980 fn set_background_appearance(&self, background_appearance: WindowBackgroundAppearance) {
981 let mut this = self.0.as_ref().lock();
982 this.renderer
983 .update_transparency(background_appearance != WindowBackgroundAppearance::Opaque);
984
985 let blur_radius = if background_appearance == WindowBackgroundAppearance::Blurred {
986 80
987 } else {
988 0
989 };
990 let opaque = if background_appearance == WindowBackgroundAppearance::Opaque {
991 YES
992 } else {
993 NO
994 };
995 unsafe {
996 this.native_window.setOpaque_(opaque);
997 // Shadows for transparent windows cause artifacts and performance issues
998 this.native_window.setHasShadow_(opaque);
999 let clear_color = if opaque == YES {
1000 NSColor::colorWithSRGBRed_green_blue_alpha_(nil, 0f64, 0f64, 0f64, 1f64)
1001 } else {
1002 NSColor::clearColor(nil)
1003 };
1004 this.native_window.setBackgroundColor_(clear_color);
1005 let window_number = this.native_window.windowNumber();
1006 CGSSetWindowBackgroundBlurRadius(CGSMainConnectionID(), window_number, blur_radius);
1007 }
1008 }
1009
1010 fn set_edited(&mut self, edited: bool) {
1011 unsafe {
1012 let window = self.0.lock().native_window;
1013 msg_send![window, setDocumentEdited: edited as BOOL]
1014 }
1015
1016 // Changing the document edited state resets the traffic light position,
1017 // so we have to move it again.
1018 self.0.lock().move_traffic_light();
1019 }
1020
1021 fn show_character_palette(&self) {
1022 let this = self.0.lock();
1023 let window = this.native_window;
1024 this.executor
1025 .spawn(async move {
1026 unsafe {
1027 let app = NSApplication::sharedApplication(nil);
1028 let _: () = msg_send![app, orderFrontCharacterPalette: window];
1029 }
1030 })
1031 .detach();
1032 }
1033
1034 fn minimize(&self) {
1035 let window = self.0.lock().native_window;
1036 unsafe {
1037 window.miniaturize_(nil);
1038 }
1039 }
1040
1041 fn zoom(&self) {
1042 let this = self.0.lock();
1043 let window = this.native_window;
1044 this.executor
1045 .spawn(async move {
1046 unsafe {
1047 window.zoom_(nil);
1048 }
1049 })
1050 .detach();
1051 }
1052
1053 fn toggle_fullscreen(&self) {
1054 let this = self.0.lock();
1055 let window = this.native_window;
1056 this.executor
1057 .spawn(async move {
1058 unsafe {
1059 window.toggleFullScreen_(nil);
1060 }
1061 })
1062 .detach();
1063 }
1064
1065 fn is_fullscreen(&self) -> bool {
1066 let this = self.0.lock();
1067 let window = this.native_window;
1068
1069 unsafe {
1070 window
1071 .styleMask()
1072 .contains(NSWindowStyleMask::NSFullScreenWindowMask)
1073 }
1074 }
1075
1076 fn on_request_frame(&self, callback: Box<dyn FnMut()>) {
1077 self.0.as_ref().lock().request_frame_callback = Some(callback);
1078 }
1079
1080 fn on_input(&self, callback: Box<dyn FnMut(PlatformInput) -> crate::DispatchEventResult>) {
1081 self.0.as_ref().lock().event_callback = Some(callback);
1082 }
1083
1084 fn on_active_status_change(&self, callback: Box<dyn FnMut(bool)>) {
1085 self.0.as_ref().lock().activate_callback = Some(callback);
1086 }
1087
1088 fn on_hover_status_change(&self, _: Box<dyn FnMut(bool)>) {}
1089
1090 fn on_resize(&self, callback: Box<dyn FnMut(Size<Pixels>, f32)>) {
1091 self.0.as_ref().lock().resize_callback = Some(callback);
1092 }
1093
1094 fn on_moved(&self, callback: Box<dyn FnMut()>) {
1095 self.0.as_ref().lock().moved_callback = Some(callback);
1096 }
1097
1098 fn on_should_close(&self, callback: Box<dyn FnMut() -> bool>) {
1099 self.0.as_ref().lock().should_close_callback = Some(callback);
1100 }
1101
1102 fn on_close(&self, callback: Box<dyn FnOnce()>) {
1103 self.0.as_ref().lock().close_callback = Some(callback);
1104 }
1105
1106 fn on_appearance_changed(&self, callback: Box<dyn FnMut()>) {
1107 self.0.lock().appearance_changed_callback = Some(callback);
1108 }
1109
1110 fn draw(&self, scene: &crate::Scene) {
1111 let mut this = self.0.lock();
1112 this.renderer.draw(scene);
1113 }
1114
1115 fn sprite_atlas(&self) -> Arc<dyn PlatformAtlas> {
1116 self.0.lock().renderer.sprite_atlas().clone()
1117 }
1118
1119 fn gpu_specs(&self) -> Option<crate::GPUSpecs> {
1120 None
1121 }
1122}
1123
1124impl rwh::HasWindowHandle for MacWindow {
1125 fn window_handle(&self) -> Result<rwh::WindowHandle<'_>, rwh::HandleError> {
1126 // SAFETY: The AppKitWindowHandle is a wrapper around a pointer to an NSView
1127 unsafe {
1128 Ok(rwh::WindowHandle::borrow_raw(rwh::RawWindowHandle::AppKit(
1129 rwh::AppKitWindowHandle::new(self.0.lock().native_view.cast()),
1130 )))
1131 }
1132 }
1133}
1134
1135impl rwh::HasDisplayHandle for MacWindow {
1136 fn display_handle(&self) -> Result<rwh::DisplayHandle<'_>, rwh::HandleError> {
1137 // SAFETY: This is a no-op on macOS
1138 unsafe {
1139 Ok(rwh::DisplayHandle::borrow_raw(
1140 rwh::AppKitDisplayHandle::new().into(),
1141 ))
1142 }
1143 }
1144}
1145
1146fn get_scale_factor(native_window: id) -> f32 {
1147 let factor = unsafe {
1148 let screen: id = msg_send![native_window, screen];
1149 NSScreen::backingScaleFactor(screen) as f32
1150 };
1151
1152 // We are not certain what triggers this, but it seems that sometimes
1153 // this method would return 0 (https://github.com/zed-industries/zed/issues/6412)
1154 // It seems most likely that this would happen if the window has no screen
1155 // (if it is off-screen), though we'd expect to see viewDidChangeBackingProperties before
1156 // it was rendered for real.
1157 // Regardless, attempt to avoid the issue here.
1158 if factor == 0.0 {
1159 2.
1160 } else {
1161 factor
1162 }
1163}
1164
1165unsafe fn get_window_state(object: &Object) -> Arc<Mutex<MacWindowState>> {
1166 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1167 let rc1 = Arc::from_raw(raw as *mut Mutex<MacWindowState>);
1168 let rc2 = rc1.clone();
1169 mem::forget(rc1);
1170 rc2
1171}
1172
1173unsafe fn drop_window_state(object: &Object) {
1174 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1175 Arc::from_raw(raw as *mut Mutex<MacWindowState>);
1176}
1177
1178extern "C" fn yes(_: &Object, _: Sel) -> BOOL {
1179 YES
1180}
1181
1182extern "C" fn dealloc_window(this: &Object, _: Sel) {
1183 unsafe {
1184 drop_window_state(this);
1185 let _: () = msg_send![super(this, class!(NSWindow)), dealloc];
1186 }
1187}
1188
1189extern "C" fn dealloc_view(this: &Object, _: Sel) {
1190 unsafe {
1191 drop_window_state(this);
1192 let _: () = msg_send![super(this, class!(NSView)), dealloc];
1193 }
1194}
1195
1196extern "C" fn handle_key_equivalent(this: &Object, _: Sel, native_event: id) -> BOOL {
1197 handle_key_event(this, native_event, true)
1198}
1199
1200extern "C" fn handle_key_down(this: &Object, _: Sel, native_event: id) {
1201 handle_key_event(this, native_event, false);
1202}
1203
1204// Things to test if you're modifying this method:
1205// U.S. layout:
1206// - The IME consumes characters like 'j' and 'k', which makes paging through `less` in
1207// the terminal behave incorrectly by default. This behavior should be patched by our
1208// IME integration
1209// - `alt-t` should open the tasks menu
1210// - In vim mode, this keybinding should work:
1211// ```
1212// {
1213// "context": "Editor && vim_mode == insert",
1214// "bindings": {"j j": "vim::NormalBefore"}
1215// }
1216// ```
1217// and typing 'j k' in insert mode with this keybinding should insert the two characters
1218// Brazilian layout:
1219// - `" space` should create an unmarked quote
1220// - `" backspace` should delete the marked quote
1221// - `" up` should insert a quote, unmark it, and move up one line
1222// - `" cmd-down` should insert a quote, unmark it, and move to the end of the file
1223// - NOTE: The current implementation does not move the selection to the end of the file
1224// - `cmd-ctrl-space` and clicking on an emoji should type it
1225// Czech (QWERTY) layout:
1226// - in vim mode `option-4` should go to end of line (same as $)
1227// Japanese (Romaji) layout:
1228// - type `a i left down up enter enter` should create an unmarked text "愛"
1229extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent: bool) -> BOOL {
1230 let window_state = unsafe { get_window_state(this) };
1231 let mut lock = window_state.as_ref().lock();
1232
1233 let window_height = lock.content_size().height;
1234 let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) };
1235
1236 if let Some(PlatformInput::KeyDown(mut event)) = event {
1237 // For certain keystrokes, macOS will first dispatch a "key equivalent" event.
1238 // If that event isn't handled, it will then dispatch a "key down" event. GPUI
1239 // makes no distinction between these two types of events, so we need to ignore
1240 // the "key down" event if we've already just processed its "key equivalent" version.
1241 if key_equivalent {
1242 lock.last_key_equivalent = Some(event.clone());
1243 } else if lock.last_key_equivalent.take().as_ref() == Some(&event) {
1244 return NO;
1245 }
1246
1247 let keydown = event.keystroke.clone();
1248 let fn_modifier = keydown.modifiers.function;
1249 lock.last_ime_inputs = Some(Default::default());
1250 drop(lock);
1251
1252 // Send the event to the input context for IME handling, unless the `fn` modifier is
1253 // being pressed.
1254 // this will call back into `insert_text`, etc.
1255 if !fn_modifier {
1256 unsafe {
1257 let input_context: id = msg_send![this, inputContext];
1258 let _: BOOL = msg_send![input_context, handleEvent: native_event];
1259 }
1260 }
1261
1262 let mut handled = false;
1263 let mut lock = window_state.lock();
1264 let previous_keydown_inserted_text = lock.previous_keydown_inserted_text.take();
1265 let mut last_inserts = lock.last_ime_inputs.take().unwrap();
1266 let ime_composing = std::mem::take(&mut lock.ime_composing);
1267
1268 let mut callback = lock.event_callback.take();
1269 drop(lock);
1270
1271 let last_insert = last_inserts.pop();
1272 // on a brazilian keyboard typing `"` and then hitting `up` will cause two IME
1273 // events, one to unmark the quote, and one to send the up arrow.
1274 for (text, range) in last_inserts {
1275 send_to_input_handler(this, ImeInput::InsertText(text, range));
1276 }
1277
1278 let is_composing =
1279 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1280 .flatten()
1281 .is_some()
1282 || ime_composing;
1283
1284 if let Some((text, range)) = last_insert {
1285 if !is_composing {
1286 window_state.lock().previous_keydown_inserted_text = Some(text.clone());
1287 if let Some(callback) = callback.as_mut() {
1288 event.keystroke.ime_key = Some(text.clone());
1289 handled = !callback(PlatformInput::KeyDown(event)).propagate;
1290 }
1291 }
1292
1293 if !handled {
1294 handled = true;
1295 send_to_input_handler(this, ImeInput::InsertText(text, range));
1296 }
1297 } else if !is_composing {
1298 let is_held = event.is_held;
1299
1300 if let Some(callback) = callback.as_mut() {
1301 handled = !callback(PlatformInput::KeyDown(event)).propagate;
1302 }
1303
1304 if !handled && is_held {
1305 if let Some(text) = previous_keydown_inserted_text {
1306 // MacOS IME is a bit funky, and even when you've told it there's nothing to
1307 // enter it will still swallow certain keys (e.g. 'f', 'j') and not others
1308 // (e.g. 'n'). This is a problem for certain kinds of views, like the terminal.
1309 with_input_handler(this, |input_handler| {
1310 if input_handler.selected_text_range().is_none() {
1311 handled = true;
1312 input_handler.replace_text_in_range(None, &text)
1313 }
1314 });
1315 window_state.lock().previous_keydown_inserted_text = Some(text);
1316 }
1317 }
1318 }
1319
1320 window_state.lock().event_callback = callback;
1321
1322 handled as BOOL
1323 } else {
1324 NO
1325 }
1326}
1327
1328extern "C" fn handle_view_event(this: &Object, _: Sel, native_event: id) {
1329 let window_state = unsafe { get_window_state(this) };
1330 let weak_window_state = Arc::downgrade(&window_state);
1331 let mut lock = window_state.as_ref().lock();
1332 let window_height = lock.content_size().height;
1333 let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) };
1334
1335 if let Some(mut event) = event {
1336 match &mut event {
1337 PlatformInput::MouseDown(
1338 event @ MouseDownEvent {
1339 button: MouseButton::Left,
1340 modifiers: Modifiers { control: true, .. },
1341 ..
1342 },
1343 ) => {
1344 // On mac, a ctrl-left click should be handled as a right click.
1345 *event = MouseDownEvent {
1346 button: MouseButton::Right,
1347 modifiers: Modifiers {
1348 control: false,
1349 ..event.modifiers
1350 },
1351 click_count: 1,
1352 ..*event
1353 };
1354 }
1355
1356 // Handles focusing click.
1357 PlatformInput::MouseDown(
1358 event @ MouseDownEvent {
1359 button: MouseButton::Left,
1360 ..
1361 },
1362 ) if (lock.first_mouse) => {
1363 *event = MouseDownEvent {
1364 first_mouse: true,
1365 ..*event
1366 };
1367 lock.first_mouse = false;
1368 }
1369
1370 // Because we map a ctrl-left_down to a right_down -> right_up let's ignore
1371 // the ctrl-left_up to avoid having a mismatch in button down/up events if the
1372 // user is still holding ctrl when releasing the left mouse button
1373 PlatformInput::MouseUp(
1374 event @ MouseUpEvent {
1375 button: MouseButton::Left,
1376 modifiers: Modifiers { control: true, .. },
1377 ..
1378 },
1379 ) => {
1380 *event = MouseUpEvent {
1381 button: MouseButton::Right,
1382 modifiers: Modifiers {
1383 control: false,
1384 ..event.modifiers
1385 },
1386 click_count: 1,
1387 ..*event
1388 };
1389 }
1390
1391 _ => {}
1392 };
1393
1394 match &event {
1395 PlatformInput::MouseMove(
1396 event @ MouseMoveEvent {
1397 pressed_button: Some(_),
1398 ..
1399 },
1400 ) => {
1401 // Synthetic drag is used for selecting long buffer contents while buffer is being scrolled.
1402 // External file drag and drop is able to emit its own synthetic mouse events which will conflict
1403 // with these ones.
1404 if !lock.external_files_dragged {
1405 lock.synthetic_drag_counter += 1;
1406 let executor = lock.executor.clone();
1407 executor
1408 .spawn(synthetic_drag(
1409 weak_window_state,
1410 lock.synthetic_drag_counter,
1411 event.clone(),
1412 ))
1413 .detach();
1414 }
1415 }
1416
1417 PlatformInput::MouseUp(MouseUpEvent { .. }) => {
1418 lock.synthetic_drag_counter += 1;
1419 }
1420
1421 PlatformInput::ModifiersChanged(ModifiersChangedEvent { modifiers }) => {
1422 // Only raise modifiers changed event when they have actually changed
1423 if let Some(PlatformInput::ModifiersChanged(ModifiersChangedEvent {
1424 modifiers: prev_modifiers,
1425 })) = &lock.previous_modifiers_changed_event
1426 {
1427 if prev_modifiers == modifiers {
1428 return;
1429 }
1430 }
1431
1432 lock.previous_modifiers_changed_event = Some(event.clone());
1433 }
1434
1435 _ => {}
1436 }
1437
1438 if let Some(mut callback) = lock.event_callback.take() {
1439 drop(lock);
1440 callback(event);
1441 window_state.lock().event_callback = Some(callback);
1442 }
1443 }
1444}
1445
1446// Allows us to receive `cmd-.` (the shortcut for closing a dialog)
1447// https://bugs.eclipse.org/bugs/show_bug.cgi?id=300620#c6
1448extern "C" fn cancel_operation(this: &Object, _sel: Sel, _sender: id) {
1449 let window_state = unsafe { get_window_state(this) };
1450 let mut lock = window_state.as_ref().lock();
1451
1452 let keystroke = Keystroke {
1453 modifiers: Default::default(),
1454 key: ".".into(),
1455 ime_key: None,
1456 };
1457 let event = PlatformInput::KeyDown(KeyDownEvent {
1458 keystroke: keystroke.clone(),
1459 is_held: false,
1460 });
1461
1462 if let Some(mut callback) = lock.event_callback.take() {
1463 drop(lock);
1464 callback(event);
1465 window_state.lock().event_callback = Some(callback);
1466 }
1467}
1468
1469extern "C" fn window_did_change_occlusion_state(this: &Object, _: Sel, _: id) {
1470 let window_state = unsafe { get_window_state(this) };
1471 let lock = &mut *window_state.lock();
1472 unsafe {
1473 if lock
1474 .native_window
1475 .occlusionState()
1476 .contains(NSWindowOcclusionState::NSWindowOcclusionStateVisible)
1477 {
1478 lock.start_display_link();
1479 } else {
1480 lock.stop_display_link();
1481 }
1482 }
1483}
1484
1485extern "C" fn window_did_resize(this: &Object, _: Sel, _: id) {
1486 let window_state = unsafe { get_window_state(this) };
1487 window_state.as_ref().lock().move_traffic_light();
1488}
1489
1490extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) {
1491 let window_state = unsafe { get_window_state(this) };
1492 let mut lock = window_state.as_ref().lock();
1493 lock.fullscreen_restore_bounds = lock.bounds();
1494}
1495
1496extern "C" fn window_did_move(this: &Object, _: Sel, _: id) {
1497 let window_state = unsafe { get_window_state(this) };
1498 let mut lock = window_state.as_ref().lock();
1499 if let Some(mut callback) = lock.moved_callback.take() {
1500 drop(lock);
1501 callback();
1502 window_state.lock().moved_callback = Some(callback);
1503 }
1504}
1505
1506extern "C" fn window_did_change_screen(this: &Object, _: Sel, _: id) {
1507 let window_state = unsafe { get_window_state(this) };
1508 let mut lock = window_state.as_ref().lock();
1509 lock.start_display_link();
1510}
1511
1512extern "C" fn window_did_change_key_status(this: &Object, selector: Sel, _: id) {
1513 let window_state = unsafe { get_window_state(this) };
1514 let lock = window_state.lock();
1515 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1516
1517 // When opening a pop-up while the application isn't active, Cocoa sends a spurious
1518 // `windowDidBecomeKey` message to the previous key window even though that window
1519 // isn't actually key. This causes a bug if the application is later activated while
1520 // the pop-up is still open, making it impossible to activate the previous key window
1521 // even if the pop-up gets closed. The only way to activate it again is to de-activate
1522 // the app and re-activate it, which is a pretty bad UX.
1523 // The following code detects the spurious event and invokes `resignKeyWindow`:
1524 // in theory, we're not supposed to invoke this method manually but it balances out
1525 // the spurious `becomeKeyWindow` event and helps us work around that bug.
1526 if selector == sel!(windowDidBecomeKey:) && !is_active {
1527 unsafe {
1528 let _: () = msg_send![lock.native_window, resignKeyWindow];
1529 return;
1530 }
1531 }
1532
1533 let executor = lock.executor.clone();
1534 drop(lock);
1535 executor
1536 .spawn(async move {
1537 let mut lock = window_state.as_ref().lock();
1538 if let Some(mut callback) = lock.activate_callback.take() {
1539 drop(lock);
1540 callback(is_active);
1541 window_state.lock().activate_callback = Some(callback);
1542 };
1543 })
1544 .detach();
1545}
1546
1547extern "C" fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
1548 let window_state = unsafe { get_window_state(this) };
1549 let mut lock = window_state.as_ref().lock();
1550 if let Some(mut callback) = lock.should_close_callback.take() {
1551 drop(lock);
1552 let should_close = callback();
1553 window_state.lock().should_close_callback = Some(callback);
1554 should_close as BOOL
1555 } else {
1556 YES
1557 }
1558}
1559
1560extern "C" fn close_window(this: &Object, _: Sel) {
1561 unsafe {
1562 let close_callback = {
1563 let window_state = get_window_state(this);
1564 let mut lock = window_state.as_ref().lock();
1565 lock.close_callback.take()
1566 };
1567
1568 if let Some(callback) = close_callback {
1569 callback();
1570 }
1571
1572 let _: () = msg_send![super(this, class!(NSWindow)), close];
1573 }
1574}
1575
1576extern "C" fn make_backing_layer(this: &Object, _: Sel) -> id {
1577 let window_state = unsafe { get_window_state(this) };
1578 let window_state = window_state.as_ref().lock();
1579 window_state.renderer.layer_ptr() as id
1580}
1581
1582extern "C" fn view_did_change_backing_properties(this: &Object, _: Sel) {
1583 let window_state = unsafe { get_window_state(this) };
1584 let mut lock = window_state.as_ref().lock();
1585
1586 let scale_factor = lock.scale_factor();
1587 let size = lock.content_size();
1588 let drawable_size = size.to_device_pixels(scale_factor);
1589 unsafe {
1590 let _: () = msg_send![
1591 lock.renderer.layer(),
1592 setContentsScale: scale_factor as f64
1593 ];
1594 }
1595
1596 lock.renderer.update_drawable_size(drawable_size);
1597
1598 if let Some(mut callback) = lock.resize_callback.take() {
1599 let content_size = lock.content_size();
1600 let scale_factor = lock.scale_factor();
1601 drop(lock);
1602 callback(content_size, scale_factor);
1603 window_state.as_ref().lock().resize_callback = Some(callback);
1604 };
1605}
1606
1607extern "C" fn set_frame_size(this: &Object, _: Sel, size: NSSize) {
1608 let window_state = unsafe { get_window_state(this) };
1609 let mut lock = window_state.as_ref().lock();
1610
1611 let new_size = Size::<Pixels>::from(size);
1612 if lock.content_size() == new_size {
1613 return;
1614 }
1615
1616 unsafe {
1617 let _: () = msg_send![super(this, class!(NSView)), setFrameSize: size];
1618 }
1619
1620 let scale_factor = lock.scale_factor();
1621 let drawable_size = new_size.to_device_pixels(scale_factor);
1622 lock.renderer.update_drawable_size(drawable_size);
1623
1624 if let Some(mut callback) = lock.resize_callback.take() {
1625 let content_size = lock.content_size();
1626 let scale_factor = lock.scale_factor();
1627 drop(lock);
1628 callback(content_size, scale_factor);
1629 window_state.lock().resize_callback = Some(callback);
1630 };
1631}
1632
1633extern "C" fn display_layer(this: &Object, _: Sel, _: id) {
1634 let window_state = unsafe { get_window_state(this) };
1635 let mut lock = window_state.lock();
1636 if let Some(mut callback) = lock.request_frame_callback.take() {
1637 #[cfg(not(feature = "macos-blade"))]
1638 lock.renderer.set_presents_with_transaction(true);
1639 lock.stop_display_link();
1640 drop(lock);
1641 callback();
1642
1643 let mut lock = window_state.lock();
1644 lock.request_frame_callback = Some(callback);
1645 #[cfg(not(feature = "macos-blade"))]
1646 lock.renderer.set_presents_with_transaction(false);
1647 lock.start_display_link();
1648 }
1649}
1650
1651unsafe extern "C" fn step(view: *mut c_void) {
1652 let view = view as id;
1653 let window_state = unsafe { get_window_state(&*view) };
1654 let mut lock = window_state.lock();
1655
1656 if let Some(mut callback) = lock.request_frame_callback.take() {
1657 drop(lock);
1658 callback();
1659 window_state.lock().request_frame_callback = Some(callback);
1660 }
1661}
1662
1663extern "C" fn valid_attributes_for_marked_text(_: &Object, _: Sel) -> id {
1664 unsafe { msg_send![class!(NSArray), array] }
1665}
1666
1667extern "C" fn has_marked_text(this: &Object, _: Sel) -> BOOL {
1668 let has_marked_text_result =
1669 with_input_handler(this, |input_handler| input_handler.marked_text_range()).flatten();
1670
1671 has_marked_text_result.is_some() as BOOL
1672}
1673
1674extern "C" fn marked_range(this: &Object, _: Sel) -> NSRange {
1675 let marked_range_result =
1676 with_input_handler(this, |input_handler| input_handler.marked_text_range()).flatten();
1677
1678 marked_range_result.map_or(NSRange::invalid(), |range| range.into())
1679}
1680
1681extern "C" fn selected_range(this: &Object, _: Sel) -> NSRange {
1682 let selected_range_result =
1683 with_input_handler(this, |input_handler| input_handler.selected_text_range()).flatten();
1684
1685 selected_range_result.map_or(NSRange::invalid(), |range| range.into())
1686}
1687
1688extern "C" fn first_rect_for_character_range(
1689 this: &Object,
1690 _: Sel,
1691 range: NSRange,
1692 _: id,
1693) -> NSRect {
1694 let frame: NSRect = unsafe {
1695 let state = get_window_state(this);
1696 let lock = state.lock();
1697 let mut frame = NSWindow::frame(lock.native_window);
1698 let content_layout_rect: CGRect = msg_send![lock.native_window, contentLayoutRect];
1699 frame.origin.y -= frame.size.height - content_layout_rect.size.height;
1700 frame
1701 };
1702 with_input_handler(this, |input_handler| {
1703 input_handler.bounds_for_range(range.to_range()?)
1704 })
1705 .flatten()
1706 .map_or(
1707 NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)),
1708 |bounds| {
1709 NSRect::new(
1710 NSPoint::new(
1711 frame.origin.x + bounds.origin.x.0 as f64,
1712 frame.origin.y + frame.size.height
1713 - bounds.origin.y.0 as f64
1714 - bounds.size.height.0 as f64,
1715 ),
1716 NSSize::new(bounds.size.width.0 as f64, bounds.size.height.0 as f64),
1717 )
1718 },
1719 )
1720}
1721
1722extern "C" fn insert_text(this: &Object, _: Sel, text: id, replacement_range: NSRange) {
1723 unsafe {
1724 let is_attributed_string: BOOL =
1725 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1726 let text: id = if is_attributed_string == YES {
1727 msg_send![text, string]
1728 } else {
1729 text
1730 };
1731
1732 let text = text.to_str();
1733 let replacement_range = replacement_range.to_range();
1734 send_to_input_handler(
1735 this,
1736 ImeInput::InsertText(text.to_string(), replacement_range),
1737 );
1738 }
1739}
1740
1741extern "C" fn set_marked_text(
1742 this: &Object,
1743 _: Sel,
1744 text: id,
1745 selected_range: NSRange,
1746 replacement_range: NSRange,
1747) {
1748 unsafe {
1749 let is_attributed_string: BOOL =
1750 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1751 let text: id = if is_attributed_string == YES {
1752 msg_send![text, string]
1753 } else {
1754 text
1755 };
1756 let selected_range = selected_range.to_range();
1757 let replacement_range = replacement_range.to_range();
1758 let text = text.to_str();
1759
1760 send_to_input_handler(
1761 this,
1762 ImeInput::SetMarkedText(text.to_string(), replacement_range, selected_range),
1763 );
1764 }
1765}
1766extern "C" fn unmark_text(this: &Object, _: Sel) {
1767 send_to_input_handler(this, ImeInput::UnmarkText);
1768}
1769
1770extern "C" fn attributed_substring_for_proposed_range(
1771 this: &Object,
1772 _: Sel,
1773 range: NSRange,
1774 _actual_range: *mut c_void,
1775) -> id {
1776 with_input_handler(this, |input_handler| {
1777 let range = range.to_range()?;
1778 if range.is_empty() {
1779 return None;
1780 }
1781
1782 let selected_text = input_handler.text_for_range(range.clone())?;
1783 unsafe {
1784 let string: id = msg_send![class!(NSAttributedString), alloc];
1785 let string: id = msg_send![string, initWithString: ns_string(&selected_text)];
1786 Some(string)
1787 }
1788 })
1789 .flatten()
1790 .unwrap_or(nil)
1791}
1792
1793extern "C" fn do_command_by_selector(_: &Object, _: Sel, _: Sel) {}
1794
1795extern "C" fn view_did_change_effective_appearance(this: &Object, _: Sel) {
1796 unsafe {
1797 let state = get_window_state(this);
1798 let mut lock = state.as_ref().lock();
1799 if let Some(mut callback) = lock.appearance_changed_callback.take() {
1800 drop(lock);
1801 callback();
1802 state.lock().appearance_changed_callback = Some(callback);
1803 }
1804 }
1805}
1806
1807extern "C" fn accepts_first_mouse(this: &Object, _: Sel, _: id) -> BOOL {
1808 let window_state = unsafe { get_window_state(this) };
1809 let mut lock = window_state.as_ref().lock();
1810 lock.first_mouse = true;
1811 YES
1812}
1813
1814extern "C" fn dragging_entered(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1815 let window_state = unsafe { get_window_state(this) };
1816 let position = drag_event_position(&window_state, dragging_info);
1817 let paths = external_paths_from_event(dragging_info);
1818 if let Some(event) =
1819 paths.map(|paths| PlatformInput::FileDrop(FileDropEvent::Entered { position, paths }))
1820 {
1821 if send_new_event(&window_state, event) {
1822 window_state.lock().external_files_dragged = true;
1823 return NSDragOperationCopy;
1824 }
1825 }
1826 NSDragOperationNone
1827}
1828
1829extern "C" fn dragging_updated(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1830 let window_state = unsafe { get_window_state(this) };
1831 let position = drag_event_position(&window_state, dragging_info);
1832 if send_new_event(
1833 &window_state,
1834 PlatformInput::FileDrop(FileDropEvent::Pending { position }),
1835 ) {
1836 NSDragOperationCopy
1837 } else {
1838 NSDragOperationNone
1839 }
1840}
1841
1842extern "C" fn dragging_exited(this: &Object, _: Sel, _: id) {
1843 let window_state = unsafe { get_window_state(this) };
1844 send_new_event(
1845 &window_state,
1846 PlatformInput::FileDrop(FileDropEvent::Exited),
1847 );
1848 window_state.lock().external_files_dragged = false;
1849}
1850
1851extern "C" fn perform_drag_operation(this: &Object, _: Sel, dragging_info: id) -> BOOL {
1852 let window_state = unsafe { get_window_state(this) };
1853 let position = drag_event_position(&window_state, dragging_info);
1854 if send_new_event(
1855 &window_state,
1856 PlatformInput::FileDrop(FileDropEvent::Submit { position }),
1857 ) {
1858 YES
1859 } else {
1860 NO
1861 }
1862}
1863
1864fn external_paths_from_event(dragging_info: *mut Object) -> Option<ExternalPaths> {
1865 let mut paths = SmallVec::new();
1866 let pasteboard: id = unsafe { msg_send![dragging_info, draggingPasteboard] };
1867 let filenames = unsafe { NSPasteboard::propertyListForType(pasteboard, NSFilenamesPboardType) };
1868 if filenames == nil {
1869 return None;
1870 }
1871 for file in unsafe { filenames.iter() } {
1872 let path = unsafe {
1873 let f = NSString::UTF8String(file);
1874 CStr::from_ptr(f).to_string_lossy().into_owned()
1875 };
1876 paths.push(PathBuf::from(path))
1877 }
1878 Some(ExternalPaths(paths))
1879}
1880
1881extern "C" fn conclude_drag_operation(this: &Object, _: Sel, _: id) {
1882 let window_state = unsafe { get_window_state(this) };
1883 send_new_event(
1884 &window_state,
1885 PlatformInput::FileDrop(FileDropEvent::Exited),
1886 );
1887}
1888
1889async fn synthetic_drag(
1890 window_state: Weak<Mutex<MacWindowState>>,
1891 drag_id: usize,
1892 event: MouseMoveEvent,
1893) {
1894 loop {
1895 Timer::after(Duration::from_millis(16)).await;
1896 if let Some(window_state) = window_state.upgrade() {
1897 let mut lock = window_state.lock();
1898 if lock.synthetic_drag_counter == drag_id {
1899 if let Some(mut callback) = lock.event_callback.take() {
1900 drop(lock);
1901 callback(PlatformInput::MouseMove(event.clone()));
1902 window_state.lock().event_callback = Some(callback);
1903 }
1904 } else {
1905 break;
1906 }
1907 }
1908 }
1909}
1910
1911fn send_new_event(window_state_lock: &Mutex<MacWindowState>, e: PlatformInput) -> bool {
1912 let window_state = window_state_lock.lock().event_callback.take();
1913 if let Some(mut callback) = window_state {
1914 callback(e);
1915 window_state_lock.lock().event_callback = Some(callback);
1916 true
1917 } else {
1918 false
1919 }
1920}
1921
1922fn drag_event_position(window_state: &Mutex<MacWindowState>, dragging_info: id) -> Point<Pixels> {
1923 let drag_location: NSPoint = unsafe { msg_send![dragging_info, draggingLocation] };
1924 convert_mouse_position(drag_location, window_state.lock().content_size().height)
1925}
1926
1927fn with_input_handler<F, R>(window: &Object, f: F) -> Option<R>
1928where
1929 F: FnOnce(&mut PlatformInputHandler) -> R,
1930{
1931 let window_state = unsafe { get_window_state(window) };
1932 let mut lock = window_state.as_ref().lock();
1933 if let Some(mut input_handler) = lock.input_handler.take() {
1934 drop(lock);
1935 let result = f(&mut input_handler);
1936 window_state.lock().input_handler = Some(input_handler);
1937 Some(result)
1938 } else {
1939 None
1940 }
1941}
1942
1943fn send_to_input_handler(window: &Object, ime: ImeInput) {
1944 unsafe {
1945 let window_state = get_window_state(window);
1946 let mut lock = window_state.lock();
1947
1948 if let Some(mut input_handler) = lock.input_handler.take() {
1949 match ime {
1950 ImeInput::InsertText(text, range) => {
1951 if let Some(ime_input) = lock.last_ime_inputs.as_mut() {
1952 ime_input.push((text, range));
1953 lock.input_handler = Some(input_handler);
1954 return;
1955 }
1956 drop(lock);
1957 input_handler.replace_text_in_range(range, &text)
1958 }
1959 ImeInput::SetMarkedText(text, range, marked_range) => {
1960 lock.ime_composing = true;
1961 drop(lock);
1962 input_handler.replace_and_mark_text_in_range(range, &text, marked_range)
1963 }
1964 ImeInput::UnmarkText => {
1965 drop(lock);
1966 input_handler.unmark_text()
1967 }
1968 }
1969 window_state.lock().input_handler = Some(input_handler);
1970 } else {
1971 match ime {
1972 ImeInput::InsertText(text, range) => {
1973 if let Some(ime_input) = lock.last_ime_inputs.as_mut() {
1974 ime_input.push((text, range));
1975 }
1976 }
1977 _ => {}
1978 }
1979 }
1980 }
1981}
1982
1983unsafe fn display_id_for_screen(screen: id) -> CGDirectDisplayID {
1984 let device_description = NSScreen::deviceDescription(screen);
1985 let screen_number_key: id = NSString::alloc(nil).init_str("NSScreenNumber");
1986 let screen_number = device_description.objectForKey_(screen_number_key);
1987 let screen_number: NSUInteger = msg_send![screen_number, unsignedIntegerValue];
1988 screen_number as CGDirectDisplayID
1989}