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 is_maximized(&self) -> bool {
788 self.0.as_ref().lock().is_maximized()
789 }
790
791 fn window_bounds(&self) -> WindowBounds {
792 self.0.as_ref().lock().window_bounds()
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_background_appearance(&self, background_appearance: WindowBackgroundAppearance) {
979 let mut this = self.0.as_ref().lock();
980 this.renderer
981 .update_transparency(background_appearance != WindowBackgroundAppearance::Opaque);
982
983 let blur_radius = if background_appearance == WindowBackgroundAppearance::Blurred {
984 80
985 } else {
986 0
987 };
988 let opaque = if background_appearance == WindowBackgroundAppearance::Opaque {
989 YES
990 } else {
991 NO
992 };
993 unsafe {
994 this.native_window.setOpaque_(opaque);
995 // Shadows for transparent windows cause artifacts and performance issues
996 this.native_window.setHasShadow_(opaque);
997 let clear_color = if opaque == YES {
998 NSColor::colorWithSRGBRed_green_blue_alpha_(nil, 0f64, 0f64, 0f64, 1f64)
999 } else {
1000 NSColor::clearColor(nil)
1001 };
1002 this.native_window.setBackgroundColor_(clear_color);
1003 let window_number = this.native_window.windowNumber();
1004 CGSSetWindowBackgroundBlurRadius(CGSMainConnectionID(), window_number, blur_radius);
1005 }
1006 }
1007
1008 fn minimize(&self) {
1009 let window = self.0.lock().native_window;
1010 unsafe {
1011 window.miniaturize_(nil);
1012 }
1013 }
1014
1015 fn zoom(&self) {
1016 let this = self.0.lock();
1017 let window = this.native_window;
1018 this.executor
1019 .spawn(async move {
1020 unsafe {
1021 window.zoom_(nil);
1022 }
1023 })
1024 .detach();
1025 }
1026
1027 fn toggle_fullscreen(&self) {
1028 let this = self.0.lock();
1029 let window = this.native_window;
1030 this.executor
1031 .spawn(async move {
1032 unsafe {
1033 window.toggleFullScreen_(nil);
1034 }
1035 })
1036 .detach();
1037 }
1038
1039 fn is_fullscreen(&self) -> bool {
1040 let this = self.0.lock();
1041 let window = this.native_window;
1042
1043 unsafe {
1044 window
1045 .styleMask()
1046 .contains(NSWindowStyleMask::NSFullScreenWindowMask)
1047 }
1048 }
1049
1050 fn on_request_frame(&self, callback: Box<dyn FnMut()>) {
1051 self.0.as_ref().lock().request_frame_callback = Some(callback);
1052 }
1053
1054 fn on_input(&self, callback: Box<dyn FnMut(PlatformInput) -> crate::DispatchEventResult>) {
1055 self.0.as_ref().lock().event_callback = Some(callback);
1056 }
1057
1058 fn on_active_status_change(&self, callback: Box<dyn FnMut(bool)>) {
1059 self.0.as_ref().lock().activate_callback = Some(callback);
1060 }
1061
1062 fn on_hover_status_change(&self, _: Box<dyn FnMut(bool)>) {}
1063
1064 fn on_resize(&self, callback: Box<dyn FnMut(Size<Pixels>, f32)>) {
1065 self.0.as_ref().lock().resize_callback = Some(callback);
1066 }
1067
1068 fn on_moved(&self, callback: Box<dyn FnMut()>) {
1069 self.0.as_ref().lock().moved_callback = Some(callback);
1070 }
1071
1072 fn on_should_close(&self, callback: Box<dyn FnMut() -> bool>) {
1073 self.0.as_ref().lock().should_close_callback = Some(callback);
1074 }
1075
1076 fn on_close(&self, callback: Box<dyn FnOnce()>) {
1077 self.0.as_ref().lock().close_callback = Some(callback);
1078 }
1079
1080 fn on_appearance_changed(&self, callback: Box<dyn FnMut()>) {
1081 self.0.lock().appearance_changed_callback = Some(callback);
1082 }
1083
1084 fn draw(&self, scene: &crate::Scene, on_complete: Option<oneshot::Sender<()>>) {
1085 let mut this = self.0.lock();
1086 this.renderer.draw(scene, on_complete);
1087 }
1088
1089 fn sprite_atlas(&self) -> Arc<dyn PlatformAtlas> {
1090 self.0.lock().renderer.sprite_atlas().clone()
1091 }
1092
1093 fn set_edited(&mut self, edited: bool) {
1094 unsafe {
1095 let window = self.0.lock().native_window;
1096 msg_send![window, setDocumentEdited: edited as BOOL]
1097 }
1098
1099 // Changing the document edited state resets the traffic light position,
1100 // so we have to move it again.
1101 self.0.lock().move_traffic_light();
1102 }
1103
1104 fn show_character_palette(&self) {
1105 let this = self.0.lock();
1106 let window = this.native_window;
1107 this.executor
1108 .spawn(async move {
1109 unsafe {
1110 let app = NSApplication::sharedApplication(nil);
1111 let _: () = msg_send![app, orderFrontCharacterPalette: window];
1112 }
1113 })
1114 .detach();
1115 }
1116
1117 fn set_app_id(&mut self, _app_id: &str) {}
1118
1119 fn gpu_specs(&self) -> Option<crate::GPUSpecs> {
1120 None
1121 }
1122
1123 fn fps(&self) -> Option<f32> {
1124 Some(self.0.lock().renderer.fps())
1125 }
1126}
1127
1128impl rwh::HasWindowHandle for MacWindow {
1129 fn window_handle(&self) -> Result<rwh::WindowHandle<'_>, rwh::HandleError> {
1130 // SAFETY: The AppKitWindowHandle is a wrapper around a pointer to an NSView
1131 unsafe {
1132 Ok(rwh::WindowHandle::borrow_raw(rwh::RawWindowHandle::AppKit(
1133 rwh::AppKitWindowHandle::new(self.0.lock().native_view.cast()),
1134 )))
1135 }
1136 }
1137}
1138
1139impl rwh::HasDisplayHandle for MacWindow {
1140 fn display_handle(&self) -> Result<rwh::DisplayHandle<'_>, rwh::HandleError> {
1141 // SAFETY: This is a no-op on macOS
1142 unsafe {
1143 Ok(rwh::DisplayHandle::borrow_raw(
1144 rwh::AppKitDisplayHandle::new().into(),
1145 ))
1146 }
1147 }
1148}
1149
1150fn get_scale_factor(native_window: id) -> f32 {
1151 let factor = unsafe {
1152 let screen: id = msg_send![native_window, screen];
1153 NSScreen::backingScaleFactor(screen) as f32
1154 };
1155
1156 // We are not certain what triggers this, but it seems that sometimes
1157 // this method would return 0 (https://github.com/zed-industries/zed/issues/6412)
1158 // It seems most likely that this would happen if the window has no screen
1159 // (if it is off-screen), though we'd expect to see viewDidChangeBackingProperties before
1160 // it was rendered for real.
1161 // Regardless, attempt to avoid the issue here.
1162 if factor == 0.0 {
1163 2.
1164 } else {
1165 factor
1166 }
1167}
1168
1169unsafe fn get_window_state(object: &Object) -> Arc<Mutex<MacWindowState>> {
1170 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1171 let rc1 = Arc::from_raw(raw as *mut Mutex<MacWindowState>);
1172 let rc2 = rc1.clone();
1173 mem::forget(rc1);
1174 rc2
1175}
1176
1177unsafe fn drop_window_state(object: &Object) {
1178 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1179 Arc::from_raw(raw as *mut Mutex<MacWindowState>);
1180}
1181
1182extern "C" fn yes(_: &Object, _: Sel) -> BOOL {
1183 YES
1184}
1185
1186extern "C" fn dealloc_window(this: &Object, _: Sel) {
1187 unsafe {
1188 drop_window_state(this);
1189 let _: () = msg_send![super(this, class!(NSWindow)), dealloc];
1190 }
1191}
1192
1193extern "C" fn dealloc_view(this: &Object, _: Sel) {
1194 unsafe {
1195 drop_window_state(this);
1196 let _: () = msg_send![super(this, class!(NSView)), dealloc];
1197 }
1198}
1199
1200extern "C" fn handle_key_equivalent(this: &Object, _: Sel, native_event: id) -> BOOL {
1201 handle_key_event(this, native_event, true)
1202}
1203
1204extern "C" fn handle_key_down(this: &Object, _: Sel, native_event: id) {
1205 handle_key_event(this, native_event, false);
1206}
1207
1208// Things to test if you're modifying this method:
1209// U.S. layout:
1210// - The IME consumes characters like 'j' and 'k', which makes paging through `less` in
1211// the terminal behave incorrectly by default. This behavior should be patched by our
1212// IME integration
1213// - `alt-t` should open the tasks menu
1214// - In vim mode, this keybinding should work:
1215// ```
1216// {
1217// "context": "Editor && vim_mode == insert",
1218// "bindings": {"j j": "vim::NormalBefore"}
1219// }
1220// ```
1221// and typing 'j k' in insert mode with this keybinding should insert the two characters
1222// Brazilian layout:
1223// - `" space` should create an unmarked quote
1224// - `" backspace` should delete the marked quote
1225// - `" up` should insert a quote, unmark it, and move up one line
1226// - `" cmd-down` should insert a quote, unmark it, and move to the end of the file
1227// - NOTE: The current implementation does not move the selection to the end of the file
1228// - `cmd-ctrl-space` and clicking on an emoji should type it
1229// Czech (QWERTY) layout:
1230// - in vim mode `option-4` should go to end of line (same as $)
1231// Japanese (Romaji) layout:
1232// - type `a i left down up enter enter` should create an unmarked text "愛"
1233extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent: bool) -> BOOL {
1234 let window_state = unsafe { get_window_state(this) };
1235 let mut lock = window_state.as_ref().lock();
1236
1237 let window_height = lock.content_size().height;
1238 let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) };
1239
1240 if let Some(PlatformInput::KeyDown(mut event)) = event {
1241 // For certain keystrokes, macOS will first dispatch a "key equivalent" event.
1242 // If that event isn't handled, it will then dispatch a "key down" event. GPUI
1243 // makes no distinction between these two types of events, so we need to ignore
1244 // the "key down" event if we've already just processed its "key equivalent" version.
1245 if key_equivalent {
1246 lock.last_key_equivalent = Some(event.clone());
1247 } else if lock.last_key_equivalent.take().as_ref() == Some(&event) {
1248 return NO;
1249 }
1250
1251 let keydown = event.keystroke.clone();
1252 let fn_modifier = keydown.modifiers.function;
1253 lock.last_ime_inputs = Some(Default::default());
1254 drop(lock);
1255
1256 // Send the event to the input context for IME handling, unless the `fn` modifier is
1257 // being pressed.
1258 // this will call back into `insert_text`, etc.
1259 if !fn_modifier {
1260 unsafe {
1261 let input_context: id = msg_send![this, inputContext];
1262 let _: BOOL = msg_send![input_context, handleEvent: native_event];
1263 }
1264 }
1265
1266 let mut handled = false;
1267 let mut lock = window_state.lock();
1268 let previous_keydown_inserted_text = lock.previous_keydown_inserted_text.take();
1269 let mut last_inserts = lock.last_ime_inputs.take().unwrap();
1270 let ime_composing = std::mem::take(&mut lock.ime_composing);
1271
1272 let mut callback = lock.event_callback.take();
1273 drop(lock);
1274
1275 let last_insert = last_inserts.pop();
1276 // on a brazilian keyboard typing `"` and then hitting `up` will cause two IME
1277 // events, one to unmark the quote, and one to send the up arrow.
1278 for (text, range) in last_inserts {
1279 send_to_input_handler(this, ImeInput::InsertText(text, range));
1280 }
1281
1282 let is_composing =
1283 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1284 .flatten()
1285 .is_some()
1286 || ime_composing;
1287
1288 if let Some((text, range)) = last_insert {
1289 if !is_composing {
1290 window_state.lock().previous_keydown_inserted_text = Some(text.clone());
1291 if let Some(callback) = callback.as_mut() {
1292 event.keystroke.ime_key = Some(text.clone());
1293 handled = !callback(PlatformInput::KeyDown(event)).propagate;
1294 }
1295 }
1296
1297 if !handled {
1298 handled = true;
1299 send_to_input_handler(this, ImeInput::InsertText(text, range));
1300 }
1301 } else if !is_composing {
1302 let is_held = event.is_held;
1303
1304 if let Some(callback) = callback.as_mut() {
1305 handled = !callback(PlatformInput::KeyDown(event)).propagate;
1306 }
1307
1308 if !handled && is_held {
1309 if let Some(text) = previous_keydown_inserted_text {
1310 // MacOS IME is a bit funky, and even when you've told it there's nothing to
1311 // enter it will still swallow certain keys (e.g. 'f', 'j') and not others
1312 // (e.g. 'n'). This is a problem for certain kinds of views, like the terminal.
1313 with_input_handler(this, |input_handler| {
1314 if input_handler.selected_text_range().is_none() {
1315 handled = true;
1316 input_handler.replace_text_in_range(None, &text)
1317 }
1318 });
1319 window_state.lock().previous_keydown_inserted_text = Some(text);
1320 }
1321 }
1322 }
1323
1324 window_state.lock().event_callback = callback;
1325
1326 handled as BOOL
1327 } else {
1328 NO
1329 }
1330}
1331
1332extern "C" fn handle_view_event(this: &Object, _: Sel, native_event: id) {
1333 let window_state = unsafe { get_window_state(this) };
1334 let weak_window_state = Arc::downgrade(&window_state);
1335 let mut lock = window_state.as_ref().lock();
1336 let window_height = lock.content_size().height;
1337 let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) };
1338
1339 if let Some(mut event) = event {
1340 match &mut event {
1341 PlatformInput::MouseDown(
1342 event @ MouseDownEvent {
1343 button: MouseButton::Left,
1344 modifiers: Modifiers { control: true, .. },
1345 ..
1346 },
1347 ) => {
1348 // On mac, a ctrl-left click should be handled as a right click.
1349 *event = MouseDownEvent {
1350 button: MouseButton::Right,
1351 modifiers: Modifiers {
1352 control: false,
1353 ..event.modifiers
1354 },
1355 click_count: 1,
1356 ..*event
1357 };
1358 }
1359
1360 // Handles focusing click.
1361 PlatformInput::MouseDown(
1362 event @ MouseDownEvent {
1363 button: MouseButton::Left,
1364 ..
1365 },
1366 ) if (lock.first_mouse) => {
1367 *event = MouseDownEvent {
1368 first_mouse: true,
1369 ..*event
1370 };
1371 lock.first_mouse = false;
1372 }
1373
1374 // Because we map a ctrl-left_down to a right_down -> right_up let's ignore
1375 // the ctrl-left_up to avoid having a mismatch in button down/up events if the
1376 // user is still holding ctrl when releasing the left mouse button
1377 PlatformInput::MouseUp(
1378 event @ MouseUpEvent {
1379 button: MouseButton::Left,
1380 modifiers: Modifiers { control: true, .. },
1381 ..
1382 },
1383 ) => {
1384 *event = MouseUpEvent {
1385 button: MouseButton::Right,
1386 modifiers: Modifiers {
1387 control: false,
1388 ..event.modifiers
1389 },
1390 click_count: 1,
1391 ..*event
1392 };
1393 }
1394
1395 _ => {}
1396 };
1397
1398 match &event {
1399 PlatformInput::MouseMove(
1400 event @ MouseMoveEvent {
1401 pressed_button: Some(_),
1402 ..
1403 },
1404 ) => {
1405 // Synthetic drag is used for selecting long buffer contents while buffer is being scrolled.
1406 // External file drag and drop is able to emit its own synthetic mouse events which will conflict
1407 // with these ones.
1408 if !lock.external_files_dragged {
1409 lock.synthetic_drag_counter += 1;
1410 let executor = lock.executor.clone();
1411 executor
1412 .spawn(synthetic_drag(
1413 weak_window_state,
1414 lock.synthetic_drag_counter,
1415 event.clone(),
1416 ))
1417 .detach();
1418 }
1419 }
1420
1421 PlatformInput::MouseUp(MouseUpEvent { .. }) => {
1422 lock.synthetic_drag_counter += 1;
1423 }
1424
1425 PlatformInput::ModifiersChanged(ModifiersChangedEvent { modifiers }) => {
1426 // Only raise modifiers changed event when they have actually changed
1427 if let Some(PlatformInput::ModifiersChanged(ModifiersChangedEvent {
1428 modifiers: prev_modifiers,
1429 })) = &lock.previous_modifiers_changed_event
1430 {
1431 if prev_modifiers == modifiers {
1432 return;
1433 }
1434 }
1435
1436 lock.previous_modifiers_changed_event = Some(event.clone());
1437 }
1438
1439 _ => {}
1440 }
1441
1442 if let Some(mut callback) = lock.event_callback.take() {
1443 drop(lock);
1444 callback(event);
1445 window_state.lock().event_callback = Some(callback);
1446 }
1447 }
1448}
1449
1450// Allows us to receive `cmd-.` (the shortcut for closing a dialog)
1451// https://bugs.eclipse.org/bugs/show_bug.cgi?id=300620#c6
1452extern "C" fn cancel_operation(this: &Object, _sel: Sel, _sender: id) {
1453 let window_state = unsafe { get_window_state(this) };
1454 let mut lock = window_state.as_ref().lock();
1455
1456 let keystroke = Keystroke {
1457 modifiers: Default::default(),
1458 key: ".".into(),
1459 ime_key: None,
1460 };
1461 let event = PlatformInput::KeyDown(KeyDownEvent {
1462 keystroke: keystroke.clone(),
1463 is_held: false,
1464 });
1465
1466 if let Some(mut callback) = lock.event_callback.take() {
1467 drop(lock);
1468 callback(event);
1469 window_state.lock().event_callback = Some(callback);
1470 }
1471}
1472
1473extern "C" fn window_did_change_occlusion_state(this: &Object, _: Sel, _: id) {
1474 let window_state = unsafe { get_window_state(this) };
1475 let lock = &mut *window_state.lock();
1476 unsafe {
1477 if lock
1478 .native_window
1479 .occlusionState()
1480 .contains(NSWindowOcclusionState::NSWindowOcclusionStateVisible)
1481 {
1482 lock.start_display_link();
1483 } else {
1484 lock.stop_display_link();
1485 }
1486 }
1487}
1488
1489extern "C" fn window_did_resize(this: &Object, _: Sel, _: id) {
1490 let window_state = unsafe { get_window_state(this) };
1491 window_state.as_ref().lock().move_traffic_light();
1492}
1493
1494extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) {
1495 let window_state = unsafe { get_window_state(this) };
1496 let mut lock = window_state.as_ref().lock();
1497 lock.fullscreen_restore_bounds = lock.bounds();
1498}
1499
1500extern "C" fn window_did_move(this: &Object, _: Sel, _: id) {
1501 let window_state = unsafe { get_window_state(this) };
1502 let mut lock = window_state.as_ref().lock();
1503 if let Some(mut callback) = lock.moved_callback.take() {
1504 drop(lock);
1505 callback();
1506 window_state.lock().moved_callback = Some(callback);
1507 }
1508}
1509
1510extern "C" fn window_did_change_screen(this: &Object, _: Sel, _: id) {
1511 let window_state = unsafe { get_window_state(this) };
1512 let mut lock = window_state.as_ref().lock();
1513 lock.start_display_link();
1514}
1515
1516extern "C" fn window_did_change_key_status(this: &Object, selector: Sel, _: id) {
1517 let window_state = unsafe { get_window_state(this) };
1518 let lock = window_state.lock();
1519 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1520
1521 // When opening a pop-up while the application isn't active, Cocoa sends a spurious
1522 // `windowDidBecomeKey` message to the previous key window even though that window
1523 // isn't actually key. This causes a bug if the application is later activated while
1524 // the pop-up is still open, making it impossible to activate the previous key window
1525 // even if the pop-up gets closed. The only way to activate it again is to de-activate
1526 // the app and re-activate it, which is a pretty bad UX.
1527 // The following code detects the spurious event and invokes `resignKeyWindow`:
1528 // in theory, we're not supposed to invoke this method manually but it balances out
1529 // the spurious `becomeKeyWindow` event and helps us work around that bug.
1530 if selector == sel!(windowDidBecomeKey:) && !is_active {
1531 unsafe {
1532 let _: () = msg_send![lock.native_window, resignKeyWindow];
1533 return;
1534 }
1535 }
1536
1537 let executor = lock.executor.clone();
1538 drop(lock);
1539 executor
1540 .spawn(async move {
1541 let mut lock = window_state.as_ref().lock();
1542 if let Some(mut callback) = lock.activate_callback.take() {
1543 drop(lock);
1544 callback(is_active);
1545 window_state.lock().activate_callback = Some(callback);
1546 };
1547 })
1548 .detach();
1549}
1550
1551extern "C" fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
1552 let window_state = unsafe { get_window_state(this) };
1553 let mut lock = window_state.as_ref().lock();
1554 if let Some(mut callback) = lock.should_close_callback.take() {
1555 drop(lock);
1556 let should_close = callback();
1557 window_state.lock().should_close_callback = Some(callback);
1558 should_close as BOOL
1559 } else {
1560 YES
1561 }
1562}
1563
1564extern "C" fn close_window(this: &Object, _: Sel) {
1565 unsafe {
1566 let close_callback = {
1567 let window_state = get_window_state(this);
1568 let mut lock = window_state.as_ref().lock();
1569 lock.close_callback.take()
1570 };
1571
1572 if let Some(callback) = close_callback {
1573 callback();
1574 }
1575
1576 let _: () = msg_send![super(this, class!(NSWindow)), close];
1577 }
1578}
1579
1580extern "C" fn make_backing_layer(this: &Object, _: Sel) -> id {
1581 let window_state = unsafe { get_window_state(this) };
1582 let window_state = window_state.as_ref().lock();
1583 window_state.renderer.layer_ptr() as id
1584}
1585
1586extern "C" fn view_did_change_backing_properties(this: &Object, _: Sel) {
1587 let window_state = unsafe { get_window_state(this) };
1588 let mut lock = window_state.as_ref().lock();
1589
1590 let scale_factor = lock.scale_factor();
1591 let size = lock.content_size();
1592 let drawable_size = size.to_device_pixels(scale_factor);
1593 unsafe {
1594 let _: () = msg_send![
1595 lock.renderer.layer(),
1596 setContentsScale: scale_factor as f64
1597 ];
1598 }
1599
1600 lock.renderer.update_drawable_size(drawable_size);
1601
1602 if let Some(mut callback) = lock.resize_callback.take() {
1603 let content_size = lock.content_size();
1604 let scale_factor = lock.scale_factor();
1605 drop(lock);
1606 callback(content_size, scale_factor);
1607 window_state.as_ref().lock().resize_callback = Some(callback);
1608 };
1609}
1610
1611extern "C" fn set_frame_size(this: &Object, _: Sel, size: NSSize) {
1612 let window_state = unsafe { get_window_state(this) };
1613 let mut lock = window_state.as_ref().lock();
1614
1615 let new_size = Size::<Pixels>::from(size);
1616 if lock.content_size() == new_size {
1617 return;
1618 }
1619
1620 unsafe {
1621 let _: () = msg_send![super(this, class!(NSView)), setFrameSize: size];
1622 }
1623
1624 let scale_factor = lock.scale_factor();
1625 let drawable_size = new_size.to_device_pixels(scale_factor);
1626 lock.renderer.update_drawable_size(drawable_size);
1627
1628 if let Some(mut callback) = lock.resize_callback.take() {
1629 let content_size = lock.content_size();
1630 let scale_factor = lock.scale_factor();
1631 drop(lock);
1632 callback(content_size, scale_factor);
1633 window_state.lock().resize_callback = Some(callback);
1634 };
1635}
1636
1637extern "C" fn display_layer(this: &Object, _: Sel, _: id) {
1638 let window_state = unsafe { get_window_state(this) };
1639 let mut lock = window_state.lock();
1640 if let Some(mut callback) = lock.request_frame_callback.take() {
1641 #[cfg(not(feature = "macos-blade"))]
1642 lock.renderer.set_presents_with_transaction(true);
1643 lock.stop_display_link();
1644 drop(lock);
1645 callback();
1646
1647 let mut lock = window_state.lock();
1648 lock.request_frame_callback = Some(callback);
1649 #[cfg(not(feature = "macos-blade"))]
1650 lock.renderer.set_presents_with_transaction(false);
1651 lock.start_display_link();
1652 }
1653}
1654
1655unsafe extern "C" fn step(view: *mut c_void) {
1656 let view = view as id;
1657 let window_state = unsafe { get_window_state(&*view) };
1658 let mut lock = window_state.lock();
1659
1660 if let Some(mut callback) = lock.request_frame_callback.take() {
1661 drop(lock);
1662 callback();
1663 window_state.lock().request_frame_callback = Some(callback);
1664 }
1665}
1666
1667extern "C" fn valid_attributes_for_marked_text(_: &Object, _: Sel) -> id {
1668 unsafe { msg_send![class!(NSArray), array] }
1669}
1670
1671extern "C" fn has_marked_text(this: &Object, _: Sel) -> BOOL {
1672 let has_marked_text_result =
1673 with_input_handler(this, |input_handler| input_handler.marked_text_range()).flatten();
1674
1675 has_marked_text_result.is_some() as BOOL
1676}
1677
1678extern "C" fn marked_range(this: &Object, _: Sel) -> NSRange {
1679 let marked_range_result =
1680 with_input_handler(this, |input_handler| input_handler.marked_text_range()).flatten();
1681
1682 marked_range_result.map_or(NSRange::invalid(), |range| range.into())
1683}
1684
1685extern "C" fn selected_range(this: &Object, _: Sel) -> NSRange {
1686 let selected_range_result =
1687 with_input_handler(this, |input_handler| input_handler.selected_text_range()).flatten();
1688
1689 selected_range_result.map_or(NSRange::invalid(), |range| range.into())
1690}
1691
1692extern "C" fn first_rect_for_character_range(
1693 this: &Object,
1694 _: Sel,
1695 range: NSRange,
1696 _: id,
1697) -> NSRect {
1698 let frame: NSRect = unsafe {
1699 let state = get_window_state(this);
1700 let lock = state.lock();
1701 let mut frame = NSWindow::frame(lock.native_window);
1702 let content_layout_rect: CGRect = msg_send![lock.native_window, contentLayoutRect];
1703 frame.origin.y -= frame.size.height - content_layout_rect.size.height;
1704 frame
1705 };
1706 with_input_handler(this, |input_handler| {
1707 input_handler.bounds_for_range(range.to_range()?)
1708 })
1709 .flatten()
1710 .map_or(
1711 NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)),
1712 |bounds| {
1713 NSRect::new(
1714 NSPoint::new(
1715 frame.origin.x + bounds.origin.x.0 as f64,
1716 frame.origin.y + frame.size.height
1717 - bounds.origin.y.0 as f64
1718 - bounds.size.height.0 as f64,
1719 ),
1720 NSSize::new(bounds.size.width.0 as f64, bounds.size.height.0 as f64),
1721 )
1722 },
1723 )
1724}
1725
1726extern "C" fn insert_text(this: &Object, _: Sel, text: id, replacement_range: NSRange) {
1727 unsafe {
1728 let is_attributed_string: BOOL =
1729 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1730 let text: id = if is_attributed_string == YES {
1731 msg_send![text, string]
1732 } else {
1733 text
1734 };
1735
1736 let text = text.to_str();
1737 let replacement_range = replacement_range.to_range();
1738 send_to_input_handler(
1739 this,
1740 ImeInput::InsertText(text.to_string(), replacement_range),
1741 );
1742 }
1743}
1744
1745extern "C" fn set_marked_text(
1746 this: &Object,
1747 _: Sel,
1748 text: id,
1749 selected_range: NSRange,
1750 replacement_range: NSRange,
1751) {
1752 unsafe {
1753 let is_attributed_string: BOOL =
1754 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1755 let text: id = if is_attributed_string == YES {
1756 msg_send![text, string]
1757 } else {
1758 text
1759 };
1760 let selected_range = selected_range.to_range();
1761 let replacement_range = replacement_range.to_range();
1762 let text = text.to_str();
1763
1764 send_to_input_handler(
1765 this,
1766 ImeInput::SetMarkedText(text.to_string(), replacement_range, selected_range),
1767 );
1768 }
1769}
1770extern "C" fn unmark_text(this: &Object, _: Sel) {
1771 send_to_input_handler(this, ImeInput::UnmarkText);
1772}
1773
1774extern "C" fn attributed_substring_for_proposed_range(
1775 this: &Object,
1776 _: Sel,
1777 range: NSRange,
1778 _actual_range: *mut c_void,
1779) -> id {
1780 with_input_handler(this, |input_handler| {
1781 let range = range.to_range()?;
1782 if range.is_empty() {
1783 return None;
1784 }
1785
1786 let selected_text = input_handler.text_for_range(range.clone())?;
1787 unsafe {
1788 let string: id = msg_send![class!(NSAttributedString), alloc];
1789 let string: id = msg_send![string, initWithString: ns_string(&selected_text)];
1790 Some(string)
1791 }
1792 })
1793 .flatten()
1794 .unwrap_or(nil)
1795}
1796
1797extern "C" fn do_command_by_selector(_: &Object, _: Sel, _: Sel) {}
1798
1799extern "C" fn view_did_change_effective_appearance(this: &Object, _: Sel) {
1800 unsafe {
1801 let state = get_window_state(this);
1802 let mut lock = state.as_ref().lock();
1803 if let Some(mut callback) = lock.appearance_changed_callback.take() {
1804 drop(lock);
1805 callback();
1806 state.lock().appearance_changed_callback = Some(callback);
1807 }
1808 }
1809}
1810
1811extern "C" fn accepts_first_mouse(this: &Object, _: Sel, _: id) -> BOOL {
1812 let window_state = unsafe { get_window_state(this) };
1813 let mut lock = window_state.as_ref().lock();
1814 lock.first_mouse = true;
1815 YES
1816}
1817
1818extern "C" fn dragging_entered(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1819 let window_state = unsafe { get_window_state(this) };
1820 let position = drag_event_position(&window_state, dragging_info);
1821 let paths = external_paths_from_event(dragging_info);
1822 if let Some(event) =
1823 paths.map(|paths| PlatformInput::FileDrop(FileDropEvent::Entered { position, paths }))
1824 {
1825 if send_new_event(&window_state, event) {
1826 window_state.lock().external_files_dragged = true;
1827 return NSDragOperationCopy;
1828 }
1829 }
1830 NSDragOperationNone
1831}
1832
1833extern "C" fn dragging_updated(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1834 let window_state = unsafe { get_window_state(this) };
1835 let position = drag_event_position(&window_state, dragging_info);
1836 if send_new_event(
1837 &window_state,
1838 PlatformInput::FileDrop(FileDropEvent::Pending { position }),
1839 ) {
1840 NSDragOperationCopy
1841 } else {
1842 NSDragOperationNone
1843 }
1844}
1845
1846extern "C" fn dragging_exited(this: &Object, _: Sel, _: id) {
1847 let window_state = unsafe { get_window_state(this) };
1848 send_new_event(
1849 &window_state,
1850 PlatformInput::FileDrop(FileDropEvent::Exited),
1851 );
1852 window_state.lock().external_files_dragged = false;
1853}
1854
1855extern "C" fn perform_drag_operation(this: &Object, _: Sel, dragging_info: id) -> BOOL {
1856 let window_state = unsafe { get_window_state(this) };
1857 let position = drag_event_position(&window_state, dragging_info);
1858 if send_new_event(
1859 &window_state,
1860 PlatformInput::FileDrop(FileDropEvent::Submit { position }),
1861 ) {
1862 YES
1863 } else {
1864 NO
1865 }
1866}
1867
1868fn external_paths_from_event(dragging_info: *mut Object) -> Option<ExternalPaths> {
1869 let mut paths = SmallVec::new();
1870 let pasteboard: id = unsafe { msg_send![dragging_info, draggingPasteboard] };
1871 let filenames = unsafe { NSPasteboard::propertyListForType(pasteboard, NSFilenamesPboardType) };
1872 if filenames == nil {
1873 return None;
1874 }
1875 for file in unsafe { filenames.iter() } {
1876 let path = unsafe {
1877 let f = NSString::UTF8String(file);
1878 CStr::from_ptr(f).to_string_lossy().into_owned()
1879 };
1880 paths.push(PathBuf::from(path))
1881 }
1882 Some(ExternalPaths(paths))
1883}
1884
1885extern "C" fn conclude_drag_operation(this: &Object, _: Sel, _: id) {
1886 let window_state = unsafe { get_window_state(this) };
1887 send_new_event(
1888 &window_state,
1889 PlatformInput::FileDrop(FileDropEvent::Exited),
1890 );
1891}
1892
1893async fn synthetic_drag(
1894 window_state: Weak<Mutex<MacWindowState>>,
1895 drag_id: usize,
1896 event: MouseMoveEvent,
1897) {
1898 loop {
1899 Timer::after(Duration::from_millis(16)).await;
1900 if let Some(window_state) = window_state.upgrade() {
1901 let mut lock = window_state.lock();
1902 if lock.synthetic_drag_counter == drag_id {
1903 if let Some(mut callback) = lock.event_callback.take() {
1904 drop(lock);
1905 callback(PlatformInput::MouseMove(event.clone()));
1906 window_state.lock().event_callback = Some(callback);
1907 }
1908 } else {
1909 break;
1910 }
1911 }
1912 }
1913}
1914
1915fn send_new_event(window_state_lock: &Mutex<MacWindowState>, e: PlatformInput) -> bool {
1916 let window_state = window_state_lock.lock().event_callback.take();
1917 if let Some(mut callback) = window_state {
1918 callback(e);
1919 window_state_lock.lock().event_callback = Some(callback);
1920 true
1921 } else {
1922 false
1923 }
1924}
1925
1926fn drag_event_position(window_state: &Mutex<MacWindowState>, dragging_info: id) -> Point<Pixels> {
1927 let drag_location: NSPoint = unsafe { msg_send![dragging_info, draggingLocation] };
1928 convert_mouse_position(drag_location, window_state.lock().content_size().height)
1929}
1930
1931fn with_input_handler<F, R>(window: &Object, f: F) -> Option<R>
1932where
1933 F: FnOnce(&mut PlatformInputHandler) -> R,
1934{
1935 let window_state = unsafe { get_window_state(window) };
1936 let mut lock = window_state.as_ref().lock();
1937 if let Some(mut input_handler) = lock.input_handler.take() {
1938 drop(lock);
1939 let result = f(&mut input_handler);
1940 window_state.lock().input_handler = Some(input_handler);
1941 Some(result)
1942 } else {
1943 None
1944 }
1945}
1946
1947fn send_to_input_handler(window: &Object, ime: ImeInput) {
1948 unsafe {
1949 let window_state = get_window_state(window);
1950 let mut lock = window_state.lock();
1951
1952 if let Some(mut input_handler) = lock.input_handler.take() {
1953 match ime {
1954 ImeInput::InsertText(text, range) => {
1955 if let Some(ime_input) = lock.last_ime_inputs.as_mut() {
1956 ime_input.push((text, range));
1957 lock.input_handler = Some(input_handler);
1958 return;
1959 }
1960 drop(lock);
1961 input_handler.replace_text_in_range(range, &text)
1962 }
1963 ImeInput::SetMarkedText(text, range, marked_range) => {
1964 lock.ime_composing = true;
1965 drop(lock);
1966 input_handler.replace_and_mark_text_in_range(range, &text, marked_range)
1967 }
1968 ImeInput::UnmarkText => {
1969 drop(lock);
1970 input_handler.unmark_text()
1971 }
1972 }
1973 window_state.lock().input_handler = Some(input_handler);
1974 } else {
1975 match ime {
1976 ImeInput::InsertText(text, range) => {
1977 if let Some(ime_input) = lock.last_ime_inputs.as_mut() {
1978 ime_input.push((text, range));
1979 }
1980 }
1981 _ => {}
1982 }
1983 }
1984 }
1985}
1986
1987unsafe fn display_id_for_screen(screen: id) -> CGDirectDisplayID {
1988 let device_description = NSScreen::deviceDescription(screen);
1989 let screen_number_key: id = NSString::alloc(nil).init_str("NSScreenNumber");
1990 let screen_number = device_description.objectForKey_(screen_number_key);
1991 let screen_number: NSUInteger = msg_send![screen_number, unsignedIntegerValue];
1992 screen_number as CGDirectDisplayID
1993}