1use super::{ns_string, renderer, MacDisplay, NSRange, NSStringExt};
2use crate::{
3 platform::PlatformInputHandler, point, px, size, AnyWindowHandle, Bounds, DevicePixels,
4 DisplayLink, ExternalPaths, FileDropEvent, ForegroundExecutor, KeyDownEvent, Keystroke,
5 Modifiers, ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent,
6 Pixels, PlatformAtlas, PlatformDisplay, PlatformInput, PlatformWindow, Point, PromptLevel,
7 Size, Timer, WindowAppearance, WindowBackgroundAppearance, WindowBounds, WindowKind,
8 WindowParams,
9};
10use block::ConcreteBlock;
11use cocoa::{
12 appkit::{
13 CGPoint, NSApplication, NSBackingStoreBuffered, NSColor, NSEvent, NSEventModifierFlags,
14 NSFilenamesPboardType, NSPasteboard, NSScreen, NSView, NSViewHeightSizable,
15 NSViewWidthSizable, NSWindow, NSWindowButton, NSWindowCollectionBehavior,
16 NSWindowOcclusionState, NSWindowStyleMask, NSWindowTitleVisibility,
17 },
18 base::{id, nil},
19 foundation::{
20 NSArray, NSAutoreleasePool, NSDictionary, NSFastEnumeration, NSInteger, NSPoint, NSRect,
21 NSSize, NSString, NSUInteger,
22 },
23};
24use core_graphics::display::{CGDirectDisplayID, CGRect};
25use ctor::ctor;
26use futures::channel::oneshot;
27use objc::{
28 class,
29 declare::ClassDecl,
30 msg_send,
31 runtime::{Class, Object, Protocol, Sel, BOOL, NO, YES},
32 sel, sel_impl,
33};
34use parking_lot::Mutex;
35use raw_window_handle as rwh;
36use smallvec::SmallVec;
37use std::{
38 cell::Cell,
39 ffi::{c_void, CStr},
40 mem,
41 ops::Range,
42 path::PathBuf,
43 ptr::{self, NonNull},
44 rc::Rc,
45 sync::{Arc, Weak},
46 time::Duration,
47};
48use util::ResultExt;
49
50const WINDOW_STATE_IVAR: &str = "windowState";
51
52static mut WINDOW_CLASS: *const Class = ptr::null();
53static mut PANEL_CLASS: *const Class = ptr::null();
54static mut VIEW_CLASS: *const Class = ptr::null();
55
56#[allow(non_upper_case_globals)]
57const NSWindowStyleMaskNonactivatingPanel: NSWindowStyleMask =
58 unsafe { NSWindowStyleMask::from_bits_unchecked(1 << 7) };
59#[allow(non_upper_case_globals)]
60const NSNormalWindowLevel: NSInteger = 0;
61#[allow(non_upper_case_globals)]
62const NSPopUpWindowLevel: NSInteger = 101;
63#[allow(non_upper_case_globals)]
64const NSTrackingMouseEnteredAndExited: NSUInteger = 0x01;
65#[allow(non_upper_case_globals)]
66const NSTrackingMouseMoved: NSUInteger = 0x02;
67#[allow(non_upper_case_globals)]
68const NSTrackingActiveAlways: NSUInteger = 0x80;
69#[allow(non_upper_case_globals)]
70const NSTrackingInVisibleRect: NSUInteger = 0x200;
71#[allow(non_upper_case_globals)]
72const NSWindowAnimationBehaviorUtilityWindow: NSInteger = 4;
73#[allow(non_upper_case_globals)]
74const NSViewLayerContentsRedrawDuringViewResize: NSInteger = 2;
75// https://developer.apple.com/documentation/appkit/nsdragoperation
76type NSDragOperation = NSUInteger;
77#[allow(non_upper_case_globals)]
78const NSDragOperationNone: NSDragOperation = 0;
79#[allow(non_upper_case_globals)]
80const NSDragOperationCopy: NSDragOperation = 1;
81
82#[link(name = "CoreGraphics", kind = "framework")]
83extern "C" {
84 // Widely used private APIs; Apple uses them for their Terminal.app.
85 fn CGSMainConnectionID() -> id;
86 fn CGSSetWindowBackgroundBlurRadius(
87 connection_id: id,
88 window_id: NSInteger,
89 radius: i64,
90 ) -> i32;
91}
92
93#[ctor]
94unsafe fn build_classes() {
95 WINDOW_CLASS = build_window_class("GPUIWindow", class!(NSWindow));
96 PANEL_CLASS = build_window_class("GPUIPanel", class!(NSPanel));
97 VIEW_CLASS = {
98 let mut decl = ClassDecl::new("GPUIView", class!(NSView)).unwrap();
99 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
100
101 decl.add_method(sel!(dealloc), dealloc_view as extern "C" fn(&Object, Sel));
102
103 decl.add_method(
104 sel!(performKeyEquivalent:),
105 handle_key_equivalent as extern "C" fn(&Object, Sel, id) -> BOOL,
106 );
107 decl.add_method(
108 sel!(keyDown:),
109 handle_key_down as extern "C" fn(&Object, Sel, id),
110 );
111 decl.add_method(
112 sel!(mouseDown:),
113 handle_view_event as extern "C" fn(&Object, Sel, id),
114 );
115 decl.add_method(
116 sel!(mouseUp:),
117 handle_view_event as extern "C" fn(&Object, Sel, id),
118 );
119 decl.add_method(
120 sel!(rightMouseDown:),
121 handle_view_event as extern "C" fn(&Object, Sel, id),
122 );
123 decl.add_method(
124 sel!(rightMouseUp:),
125 handle_view_event as extern "C" fn(&Object, Sel, id),
126 );
127 decl.add_method(
128 sel!(otherMouseDown:),
129 handle_view_event as extern "C" fn(&Object, Sel, id),
130 );
131 decl.add_method(
132 sel!(otherMouseUp:),
133 handle_view_event as extern "C" fn(&Object, Sel, id),
134 );
135 decl.add_method(
136 sel!(mouseMoved:),
137 handle_view_event as extern "C" fn(&Object, Sel, id),
138 );
139 decl.add_method(
140 sel!(mouseExited:),
141 handle_view_event as extern "C" fn(&Object, Sel, id),
142 );
143 decl.add_method(
144 sel!(mouseDragged:),
145 handle_view_event as extern "C" fn(&Object, Sel, id),
146 );
147 decl.add_method(
148 sel!(scrollWheel:),
149 handle_view_event as extern "C" fn(&Object, Sel, id),
150 );
151 decl.add_method(
152 sel!(flagsChanged:),
153 handle_view_event as extern "C" fn(&Object, Sel, id),
154 );
155 decl.add_method(
156 sel!(cancelOperation:),
157 cancel_operation as extern "C" fn(&Object, Sel, id),
158 );
159
160 decl.add_method(
161 sel!(makeBackingLayer),
162 make_backing_layer as extern "C" fn(&Object, Sel) -> id,
163 );
164
165 decl.add_protocol(Protocol::get("CALayerDelegate").unwrap());
166 decl.add_method(
167 sel!(viewDidChangeBackingProperties),
168 view_did_change_backing_properties as extern "C" fn(&Object, Sel),
169 );
170 decl.add_method(
171 sel!(setFrameSize:),
172 set_frame_size as extern "C" fn(&Object, Sel, NSSize),
173 );
174 decl.add_method(
175 sel!(displayLayer:),
176 display_layer as extern "C" fn(&Object, Sel, id),
177 );
178
179 decl.add_protocol(Protocol::get("NSTextInputClient").unwrap());
180 decl.add_method(
181 sel!(validAttributesForMarkedText),
182 valid_attributes_for_marked_text as extern "C" fn(&Object, Sel) -> id,
183 );
184 decl.add_method(
185 sel!(hasMarkedText),
186 has_marked_text as extern "C" fn(&Object, Sel) -> BOOL,
187 );
188 decl.add_method(
189 sel!(markedRange),
190 marked_range as extern "C" fn(&Object, Sel) -> NSRange,
191 );
192 decl.add_method(
193 sel!(selectedRange),
194 selected_range as extern "C" fn(&Object, Sel) -> NSRange,
195 );
196 decl.add_method(
197 sel!(firstRectForCharacterRange:actualRange:),
198 first_rect_for_character_range as extern "C" fn(&Object, Sel, NSRange, id) -> NSRect,
199 );
200 decl.add_method(
201 sel!(insertText:replacementRange:),
202 insert_text as extern "C" fn(&Object, Sel, id, NSRange),
203 );
204 decl.add_method(
205 sel!(setMarkedText:selectedRange:replacementRange:),
206 set_marked_text as extern "C" fn(&Object, Sel, id, NSRange, NSRange),
207 );
208 decl.add_method(sel!(unmarkText), unmark_text as extern "C" fn(&Object, Sel));
209 decl.add_method(
210 sel!(attributedSubstringForProposedRange:actualRange:),
211 attributed_substring_for_proposed_range
212 as extern "C" fn(&Object, Sel, NSRange, *mut c_void) -> id,
213 );
214 decl.add_method(
215 sel!(viewDidChangeEffectiveAppearance),
216 view_did_change_effective_appearance as extern "C" fn(&Object, Sel),
217 );
218
219 // Suppress beep on keystrokes with modifier keys.
220 decl.add_method(
221 sel!(doCommandBySelector:),
222 do_command_by_selector as extern "C" fn(&Object, Sel, Sel),
223 );
224
225 decl.add_method(
226 sel!(acceptsFirstMouse:),
227 accepts_first_mouse as extern "C" fn(&Object, Sel, id) -> BOOL,
228 );
229
230 decl.register()
231 };
232}
233
234pub(crate) fn convert_mouse_position(position: NSPoint, window_height: Pixels) -> Point<Pixels> {
235 point(
236 px(position.x as f32),
237 // MacOS screen coordinates are relative to bottom left
238 window_height - px(position.y as f32),
239 )
240}
241
242unsafe fn build_window_class(name: &'static str, superclass: &Class) -> *const Class {
243 let mut decl = ClassDecl::new(name, superclass).unwrap();
244 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
245 decl.add_method(sel!(dealloc), dealloc_window as extern "C" fn(&Object, Sel));
246 decl.add_method(
247 sel!(canBecomeMainWindow),
248 yes as extern "C" fn(&Object, Sel) -> BOOL,
249 );
250 decl.add_method(
251 sel!(canBecomeKeyWindow),
252 yes as extern "C" fn(&Object, Sel) -> BOOL,
253 );
254 decl.add_method(
255 sel!(windowDidResize:),
256 window_did_resize as extern "C" fn(&Object, Sel, id),
257 );
258 decl.add_method(
259 sel!(windowDidChangeOcclusionState:),
260 window_did_change_occlusion_state as extern "C" fn(&Object, Sel, id),
261 );
262 decl.add_method(
263 sel!(windowWillEnterFullScreen:),
264 window_will_enter_fullscreen as extern "C" fn(&Object, Sel, id),
265 );
266 decl.add_method(
267 sel!(windowDidMove:),
268 window_did_move as extern "C" fn(&Object, Sel, id),
269 );
270 decl.add_method(
271 sel!(windowDidChangeScreen:),
272 window_did_change_screen as extern "C" fn(&Object, Sel, id),
273 );
274 decl.add_method(
275 sel!(windowDidBecomeKey:),
276 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
277 );
278 decl.add_method(
279 sel!(windowDidResignKey:),
280 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
281 );
282 decl.add_method(
283 sel!(windowShouldClose:),
284 window_should_close as extern "C" fn(&Object, Sel, id) -> BOOL,
285 );
286
287 decl.add_method(sel!(close), close_window as extern "C" fn(&Object, Sel));
288
289 decl.add_method(
290 sel!(draggingEntered:),
291 dragging_entered as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
292 );
293 decl.add_method(
294 sel!(draggingUpdated:),
295 dragging_updated as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
296 );
297 decl.add_method(
298 sel!(draggingExited:),
299 dragging_exited as extern "C" fn(&Object, Sel, id),
300 );
301 decl.add_method(
302 sel!(performDragOperation:),
303 perform_drag_operation as extern "C" fn(&Object, Sel, id) -> BOOL,
304 );
305 decl.add_method(
306 sel!(concludeDragOperation:),
307 conclude_drag_operation as extern "C" fn(&Object, Sel, id),
308 );
309
310 decl.register()
311}
312
313#[derive(Debug, Clone)]
314#[allow(clippy::enum_variant_names)]
315enum ImeInput {
316 InsertText(String, Option<Range<usize>>),
317 SetMarkedText(String, Option<Range<usize>>, Option<Range<usize>>),
318 UnmarkText,
319}
320
321struct MacWindowState {
322 handle: AnyWindowHandle,
323 executor: ForegroundExecutor,
324 native_window: id,
325 native_view: NonNull<Object>,
326 display_link: Option<DisplayLink>,
327 renderer: renderer::Renderer,
328 request_frame_callback: Option<Box<dyn FnMut()>>,
329 event_callback: Option<Box<dyn FnMut(PlatformInput) -> crate::DispatchEventResult>>,
330 activate_callback: Option<Box<dyn FnMut(bool)>>,
331 resize_callback: Option<Box<dyn FnMut(Size<Pixels>, f32)>>,
332 moved_callback: Option<Box<dyn FnMut()>>,
333 should_close_callback: Option<Box<dyn FnMut() -> bool>>,
334 close_callback: Option<Box<dyn FnOnce()>>,
335 appearance_changed_callback: Option<Box<dyn FnMut()>>,
336 input_handler: Option<PlatformInputHandler>,
337 last_key_equivalent: Option<KeyDownEvent>,
338 synthetic_drag_counter: usize,
339 last_fresh_keydown: Option<Keystroke>,
340 traffic_light_position: Option<Point<Pixels>>,
341 previous_modifiers_changed_event: Option<PlatformInput>,
342 // State tracking what the IME did after the last request
343 last_ime_action: Option<ImeInput>,
344 previous_keydown_inserted_text: Option<String>,
345 external_files_dragged: bool,
346 // Whether the next left-mouse click is also the focusing click.
347 first_mouse: bool,
348 fullscreen_restore_bounds: Bounds<DevicePixels>,
349}
350
351impl MacWindowState {
352 fn move_traffic_light(&self) {
353 if let Some(traffic_light_position) = self.traffic_light_position {
354 if self.is_fullscreen() {
355 // Moving traffic lights while fullscreen doesn't work,
356 // see https://github.com/zed-industries/zed/issues/4712
357 return;
358 }
359
360 let titlebar_height = self.titlebar_height();
361
362 unsafe {
363 let close_button: id = msg_send![
364 self.native_window,
365 standardWindowButton: NSWindowButton::NSWindowCloseButton
366 ];
367 let min_button: id = msg_send![
368 self.native_window,
369 standardWindowButton: NSWindowButton::NSWindowMiniaturizeButton
370 ];
371 let zoom_button: id = msg_send![
372 self.native_window,
373 standardWindowButton: NSWindowButton::NSWindowZoomButton
374 ];
375
376 let mut close_button_frame: CGRect = msg_send![close_button, frame];
377 let mut min_button_frame: CGRect = msg_send![min_button, frame];
378 let mut zoom_button_frame: CGRect = msg_send![zoom_button, frame];
379 let mut origin = point(
380 traffic_light_position.x,
381 titlebar_height
382 - traffic_light_position.y
383 - px(close_button_frame.size.height as f32),
384 );
385 let button_spacing =
386 px((min_button_frame.origin.x - close_button_frame.origin.x) as f32);
387
388 close_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
389 let _: () = msg_send![close_button, setFrame: close_button_frame];
390 origin.x += button_spacing;
391
392 min_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
393 let _: () = msg_send![min_button, setFrame: min_button_frame];
394 origin.x += button_spacing;
395
396 zoom_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
397 let _: () = msg_send![zoom_button, setFrame: zoom_button_frame];
398 origin.x += button_spacing;
399 }
400 }
401 }
402
403 fn start_display_link(&mut self) {
404 self.stop_display_link();
405 unsafe {
406 if !self
407 .native_window
408 .occlusionState()
409 .contains(NSWindowOcclusionState::NSWindowOcclusionStateVisible)
410 {
411 return;
412 }
413 }
414 let display_id = unsafe { display_id_for_screen(self.native_window.screen()) };
415 if let Some(mut display_link) =
416 DisplayLink::new(display_id, self.native_view.as_ptr() as *mut c_void, step).log_err()
417 {
418 display_link.start().log_err();
419 self.display_link = Some(display_link);
420 }
421 }
422
423 fn stop_display_link(&mut self) {
424 self.display_link = None;
425 }
426
427 fn is_maximized(&self) -> bool {
428 unsafe {
429 let bounds = self.bounds();
430 let screen_size = self.native_window.screen().visibleFrame().into();
431 bounds.size == screen_size
432 }
433 }
434
435 fn is_fullscreen(&self) -> bool {
436 unsafe {
437 let style_mask = self.native_window.styleMask();
438 style_mask.contains(NSWindowStyleMask::NSFullScreenWindowMask)
439 }
440 }
441
442 fn bounds(&self) -> Bounds<DevicePixels> {
443 let mut window_frame = unsafe { NSWindow::frame(self.native_window) };
444 let screen_frame = unsafe {
445 let screen = NSWindow::screen(self.native_window);
446 NSScreen::frame(screen)
447 };
448
449 // Flip the y coordinate to be top-left origin
450 window_frame.origin.y =
451 screen_frame.size.height - window_frame.origin.y - window_frame.size.height;
452
453 let bounds = Bounds::new(
454 point(
455 ((window_frame.origin.x - screen_frame.origin.x) as i32).into(),
456 ((window_frame.origin.y - screen_frame.origin.y) as i32).into(),
457 ),
458 size(
459 (window_frame.size.width as i32).into(),
460 (window_frame.size.height as i32).into(),
461 ),
462 );
463 bounds
464 }
465
466 fn content_size(&self) -> Size<Pixels> {
467 let NSSize { width, height, .. } =
468 unsafe { NSView::frame(self.native_window.contentView()) }.size;
469 size(px(width as f32), px(height as f32))
470 }
471
472 fn scale_factor(&self) -> f32 {
473 get_scale_factor(self.native_window)
474 }
475
476 fn update_drawable_size(&mut self, drawable_size: NSSize) {
477 self.renderer.update_drawable_size(Size {
478 width: drawable_size.width,
479 height: drawable_size.height,
480 })
481 }
482
483 fn titlebar_height(&self) -> Pixels {
484 unsafe {
485 let frame = NSWindow::frame(self.native_window);
486 let content_layout_rect: CGRect = msg_send![self.native_window, contentLayoutRect];
487 px((frame.size.height - content_layout_rect.size.height) as f32)
488 }
489 }
490
491 fn window_bounds(&self) -> WindowBounds {
492 if self.is_fullscreen() {
493 WindowBounds::Fullscreen(self.fullscreen_restore_bounds)
494 } else {
495 WindowBounds::Windowed(self.bounds())
496 }
497 }
498}
499
500unsafe impl Send for MacWindowState {}
501
502pub(crate) struct MacWindow(Arc<Mutex<MacWindowState>>);
503
504impl MacWindow {
505 pub fn open(
506 handle: AnyWindowHandle,
507 WindowParams {
508 window_background,
509 bounds,
510 titlebar,
511 kind,
512 is_movable,
513 focus,
514 show,
515 display_id,
516 }: WindowParams,
517 executor: ForegroundExecutor,
518 renderer_context: renderer::Context,
519 ) -> Self {
520 unsafe {
521 let pool = NSAutoreleasePool::new(nil);
522
523 let mut style_mask;
524 if let Some(titlebar) = titlebar.as_ref() {
525 style_mask = NSWindowStyleMask::NSClosableWindowMask
526 | NSWindowStyleMask::NSMiniaturizableWindowMask
527 | NSWindowStyleMask::NSResizableWindowMask
528 | NSWindowStyleMask::NSTitledWindowMask;
529
530 if titlebar.appears_transparent {
531 style_mask |= NSWindowStyleMask::NSFullSizeContentViewWindowMask;
532 }
533 } else {
534 style_mask = NSWindowStyleMask::NSTitledWindowMask
535 | NSWindowStyleMask::NSFullSizeContentViewWindowMask;
536 }
537
538 let native_window: id = match kind {
539 WindowKind::Normal => msg_send![WINDOW_CLASS, alloc],
540 WindowKind::PopUp => {
541 style_mask |= NSWindowStyleMaskNonactivatingPanel;
542 msg_send![PANEL_CLASS, alloc]
543 }
544 };
545
546 let display = display_id
547 .and_then(MacDisplay::find_by_id)
548 .unwrap_or_else(|| MacDisplay::primary());
549
550 let mut target_screen = nil;
551 let mut screen_frame = None;
552
553 let screens = NSScreen::screens(nil);
554 let count: u64 = cocoa::foundation::NSArray::count(screens);
555 for i in 0..count {
556 let screen = cocoa::foundation::NSArray::objectAtIndex(screens, i);
557 let frame = NSScreen::visibleFrame(screen);
558 let display_id = display_id_for_screen(screen);
559 if display_id == display.0 {
560 screen_frame = Some(frame);
561 target_screen = screen;
562 }
563 }
564
565 let screen_frame = screen_frame.unwrap_or_else(|| {
566 let screen = NSScreen::mainScreen(nil);
567 target_screen = screen;
568 NSScreen::visibleFrame(screen)
569 });
570
571 let window_rect = NSRect::new(
572 NSPoint::new(
573 screen_frame.origin.x + bounds.origin.x.0 as f64,
574 screen_frame.origin.y
575 + (display.bounds().size.height - bounds.origin.y).0 as f64,
576 ),
577 NSSize::new(bounds.size.width.0 as f64, bounds.size.height.0 as f64),
578 );
579
580 let native_window = native_window.initWithContentRect_styleMask_backing_defer_screen_(
581 window_rect,
582 style_mask,
583 NSBackingStoreBuffered,
584 NO,
585 target_screen,
586 );
587 assert!(!native_window.is_null());
588 let () = msg_send![
589 native_window,
590 registerForDraggedTypes:
591 NSArray::arrayWithObject(nil, NSFilenamesPboardType)
592 ];
593 let () = msg_send![
594 native_window,
595 setReleasedWhenClosed: NO
596 ];
597
598 let native_view: id = msg_send![VIEW_CLASS, alloc];
599 let native_view = NSView::init(native_view);
600 assert!(!native_view.is_null());
601
602 let window_size = {
603 let scale = get_scale_factor(native_window);
604 size(
605 bounds.size.width.0 as f32 * scale,
606 bounds.size.height.0 as f32 * scale,
607 )
608 };
609
610 let mut window = Self(Arc::new(Mutex::new(MacWindowState {
611 handle,
612 executor,
613 native_window,
614 native_view: NonNull::new_unchecked(native_view),
615 display_link: None,
616 renderer: renderer::new_renderer(
617 renderer_context,
618 native_window as *mut _,
619 native_view as *mut _,
620 window_size,
621 window_background != WindowBackgroundAppearance::Opaque,
622 ),
623 request_frame_callback: None,
624 event_callback: None,
625 activate_callback: None,
626 resize_callback: None,
627 moved_callback: None,
628 should_close_callback: None,
629 close_callback: None,
630 appearance_changed_callback: None,
631 input_handler: None,
632 last_key_equivalent: None,
633 synthetic_drag_counter: 0,
634 last_fresh_keydown: None,
635 traffic_light_position: titlebar
636 .as_ref()
637 .and_then(|titlebar| titlebar.traffic_light_position),
638 previous_modifiers_changed_event: None,
639 last_ime_action: None,
640 previous_keydown_inserted_text: None,
641 external_files_dragged: false,
642 first_mouse: false,
643 fullscreen_restore_bounds: Bounds::default(),
644 })));
645
646 (*native_window).set_ivar(
647 WINDOW_STATE_IVAR,
648 Arc::into_raw(window.0.clone()) as *const c_void,
649 );
650 native_window.setDelegate_(native_window);
651 (*native_view).set_ivar(
652 WINDOW_STATE_IVAR,
653 Arc::into_raw(window.0.clone()) as *const c_void,
654 );
655
656 if let Some(title) = titlebar
657 .as_ref()
658 .and_then(|t| t.title.as_ref().map(AsRef::as_ref))
659 {
660 window.set_title(title);
661 }
662
663 native_window.setMovable_(is_movable as BOOL);
664
665 if titlebar.map_or(true, |titlebar| titlebar.appears_transparent) {
666 native_window.setTitlebarAppearsTransparent_(YES);
667 native_window.setTitleVisibility_(NSWindowTitleVisibility::NSWindowTitleHidden);
668 }
669
670 native_view.setAutoresizingMask_(NSViewWidthSizable | NSViewHeightSizable);
671 native_view.setWantsBestResolutionOpenGLSurface_(YES);
672
673 // From winit crate: On Mojave, views automatically become layer-backed shortly after
674 // being added to a native_window. Changing the layer-backedness of a view breaks the
675 // association between the view and its associated OpenGL context. To work around this,
676 // on we explicitly make the view layer-backed up front so that AppKit doesn't do it
677 // itself and break the association with its context.
678 native_view.setWantsLayer(YES);
679 let _: () = msg_send![
680 native_view,
681 setLayerContentsRedrawPolicy: NSViewLayerContentsRedrawDuringViewResize
682 ];
683
684 native_window.setContentView_(native_view.autorelease());
685 native_window.makeFirstResponder_(native_view);
686
687 window.set_background_appearance(window_background);
688
689 match kind {
690 WindowKind::Normal => {
691 native_window.setLevel_(NSNormalWindowLevel);
692 native_window.setAcceptsMouseMovedEvents_(YES);
693 }
694 WindowKind::PopUp => {
695 // Use a tracking area to allow receiving MouseMoved events even when
696 // the window or application aren't active, which is often the case
697 // e.g. for notification windows.
698 let tracking_area: id = msg_send![class!(NSTrackingArea), alloc];
699 let _: () = msg_send![
700 tracking_area,
701 initWithRect: NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.))
702 options: NSTrackingMouseEnteredAndExited | NSTrackingMouseMoved | NSTrackingActiveAlways | NSTrackingInVisibleRect
703 owner: native_view
704 userInfo: nil
705 ];
706 let _: () =
707 msg_send![native_view, addTrackingArea: tracking_area.autorelease()];
708
709 native_window.setLevel_(NSPopUpWindowLevel);
710 let _: () = msg_send![
711 native_window,
712 setAnimationBehavior: NSWindowAnimationBehaviorUtilityWindow
713 ];
714 native_window.setCollectionBehavior_(
715 NSWindowCollectionBehavior::NSWindowCollectionBehaviorCanJoinAllSpaces |
716 NSWindowCollectionBehavior::NSWindowCollectionBehaviorFullScreenAuxiliary
717 );
718 }
719 }
720
721 if focus {
722 native_window.makeKeyAndOrderFront_(nil);
723 } else if show {
724 native_window.orderFront_(nil);
725 }
726
727 // Set the initial position of the window to the specified origin.
728 // Although we already specified the position using `initWithContentRect_styleMask_backing_defer_screen_`,
729 // the window position might be incorrect if the main screen (the screen that contains the window that has focus)
730 // is different from the primary screen.
731 NSWindow::setFrameTopLeftPoint_(native_window, window_rect.origin);
732 window.0.lock().move_traffic_light();
733
734 pool.drain();
735
736 window
737 }
738 }
739
740 pub fn active_window() -> Option<AnyWindowHandle> {
741 unsafe {
742 let app = NSApplication::sharedApplication(nil);
743 let main_window: id = msg_send![app, mainWindow];
744 if msg_send![main_window, isKindOfClass: WINDOW_CLASS] {
745 let handle = get_window_state(&*main_window).lock().handle;
746 Some(handle)
747 } else {
748 None
749 }
750 }
751 }
752}
753
754impl Drop for MacWindow {
755 fn drop(&mut self) {
756 let mut this = self.0.lock();
757 this.renderer.destroy();
758 let window = this.native_window;
759 this.display_link.take();
760 unsafe {
761 this.native_window.setDelegate_(nil);
762 }
763 this.executor
764 .spawn(async move {
765 unsafe {
766 window.close();
767 window.autorelease();
768 }
769 })
770 .detach();
771 }
772}
773
774impl PlatformWindow for MacWindow {
775 fn bounds(&self) -> Bounds<DevicePixels> {
776 self.0.as_ref().lock().bounds()
777 }
778
779 fn window_bounds(&self) -> WindowBounds {
780 self.0.as_ref().lock().window_bounds()
781 }
782
783 fn is_maximized(&self) -> bool {
784 self.0.as_ref().lock().is_maximized()
785 }
786
787 fn content_size(&self) -> Size<Pixels> {
788 self.0.as_ref().lock().content_size()
789 }
790
791 fn scale_factor(&self) -> f32 {
792 self.0.as_ref().lock().scale_factor()
793 }
794
795 fn appearance(&self) -> WindowAppearance {
796 unsafe {
797 let appearance: id = msg_send![self.0.lock().native_window, effectiveAppearance];
798 WindowAppearance::from_native(appearance)
799 }
800 }
801
802 fn display(&self) -> Option<Rc<dyn PlatformDisplay>> {
803 unsafe {
804 let screen = self.0.lock().native_window.screen();
805 let device_description: id = msg_send![screen, deviceDescription];
806 let screen_number: id = NSDictionary::valueForKey_(
807 device_description,
808 NSString::alloc(nil).init_str("NSScreenNumber"),
809 );
810
811 let screen_number: u32 = msg_send![screen_number, unsignedIntValue];
812
813 Some(Rc::new(MacDisplay(screen_number)))
814 }
815 }
816
817 fn mouse_position(&self) -> Point<Pixels> {
818 let position = unsafe {
819 self.0
820 .lock()
821 .native_window
822 .mouseLocationOutsideOfEventStream()
823 };
824 convert_mouse_position(position, self.content_size().height)
825 }
826
827 fn modifiers(&self) -> Modifiers {
828 unsafe {
829 let modifiers: NSEventModifierFlags = msg_send![class!(NSEvent), modifierFlags];
830
831 let control = modifiers.contains(NSEventModifierFlags::NSControlKeyMask);
832 let alt = modifiers.contains(NSEventModifierFlags::NSAlternateKeyMask);
833 let shift = modifiers.contains(NSEventModifierFlags::NSShiftKeyMask);
834 let command = modifiers.contains(NSEventModifierFlags::NSCommandKeyMask);
835 let function = modifiers.contains(NSEventModifierFlags::NSFunctionKeyMask);
836
837 Modifiers {
838 control,
839 alt,
840 shift,
841 platform: command,
842 function,
843 }
844 }
845 }
846
847 fn set_input_handler(&mut self, input_handler: PlatformInputHandler) {
848 self.0.as_ref().lock().input_handler = Some(input_handler);
849 }
850
851 fn take_input_handler(&mut self) -> Option<PlatformInputHandler> {
852 self.0.as_ref().lock().input_handler.take()
853 }
854
855 fn prompt(
856 &self,
857 level: PromptLevel,
858 msg: &str,
859 detail: Option<&str>,
860 answers: &[&str],
861 ) -> Option<oneshot::Receiver<usize>> {
862 // macOs applies overrides to modal window buttons after they are added.
863 // Two most important for this logic are:
864 // * Buttons with "Cancel" title will be displayed as the last buttons in the modal
865 // * Last button added to the modal via `addButtonWithTitle` stays focused
866 // * Focused buttons react on "space"/" " keypresses
867 // * Usage of `keyEquivalent`, `makeFirstResponder` or `setInitialFirstResponder` does not change the focus
868 //
869 // See also https://developer.apple.com/documentation/appkit/nsalert/1524532-addbuttonwithtitle#discussion
870 // ```
871 // By default, the first button has a key equivalent of Return,
872 // any button with a title of “Cancel” has a key equivalent of Escape,
873 // 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).
874 // ```
875 //
876 // To avoid situations when the last element added is "Cancel" and it gets the focus
877 // (hence stealing both ESC and Space shortcuts), we find and add one non-Cancel button
878 // last, so it gets focus and a Space shortcut.
879 // This way, "Save this file? Yes/No/Cancel"-ish modals will get all three buttons mapped with a key.
880 let latest_non_cancel_label = answers
881 .iter()
882 .enumerate()
883 .rev()
884 .find(|(_, &label)| label != "Cancel")
885 .filter(|&(label_index, _)| label_index > 0);
886
887 unsafe {
888 let alert: id = msg_send![class!(NSAlert), alloc];
889 let alert: id = msg_send![alert, init];
890 let alert_style = match level {
891 PromptLevel::Info => 1,
892 PromptLevel::Warning => 0,
893 PromptLevel::Critical => 2,
894 };
895 let _: () = msg_send![alert, setAlertStyle: alert_style];
896 let _: () = msg_send![alert, setMessageText: ns_string(msg)];
897 if let Some(detail) = detail {
898 let _: () = msg_send![alert, setInformativeText: ns_string(detail)];
899 }
900
901 for (ix, answer) in answers
902 .iter()
903 .enumerate()
904 .filter(|&(ix, _)| Some(ix) != latest_non_cancel_label.map(|(ix, _)| ix))
905 {
906 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
907 let _: () = msg_send![button, setTag: ix as NSInteger];
908 }
909 if let Some((ix, answer)) = latest_non_cancel_label {
910 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
911 let _: () = msg_send![button, setTag: ix as NSInteger];
912 }
913
914 let (done_tx, done_rx) = oneshot::channel();
915 let done_tx = Cell::new(Some(done_tx));
916 let block = ConcreteBlock::new(move |answer: NSInteger| {
917 if let Some(done_tx) = done_tx.take() {
918 let _ = done_tx.send(answer.try_into().unwrap());
919 }
920 });
921 let block = block.copy();
922 let native_window = self.0.lock().native_window;
923 let executor = self.0.lock().executor.clone();
924 executor
925 .spawn(async move {
926 let _: () = msg_send![
927 alert,
928 beginSheetModalForWindow: native_window
929 completionHandler: block
930 ];
931 })
932 .detach();
933
934 Some(done_rx)
935 }
936 }
937
938 fn activate(&self) {
939 let window = self.0.lock().native_window;
940 let executor = self.0.lock().executor.clone();
941 executor
942 .spawn(async move {
943 unsafe {
944 let _: () = msg_send![window, makeKeyAndOrderFront: nil];
945 }
946 })
947 .detach();
948 }
949
950 fn is_active(&self) -> bool {
951 unsafe { self.0.lock().native_window.isKeyWindow() == YES }
952 }
953
954 fn set_title(&mut self, title: &str) {
955 unsafe {
956 let app = NSApplication::sharedApplication(nil);
957 let window = self.0.lock().native_window;
958 let title = ns_string(title);
959 let _: () = msg_send![app, changeWindowsItem:window title:title filename:false];
960 let _: () = msg_send![window, setTitle: title];
961 self.0.lock().move_traffic_light();
962 }
963 }
964
965 fn set_app_id(&mut self, _app_id: &str) {}
966
967 fn set_background_appearance(&mut self, background_appearance: WindowBackgroundAppearance) {
968 let mut this = self.0.as_ref().lock();
969 this.renderer
970 .update_transparency(background_appearance != WindowBackgroundAppearance::Opaque);
971
972 let blur_radius = if background_appearance == WindowBackgroundAppearance::Blurred {
973 80
974 } else {
975 0
976 };
977 let opaque = if background_appearance == WindowBackgroundAppearance::Opaque {
978 YES
979 } else {
980 NO
981 };
982 unsafe {
983 this.native_window.setOpaque_(opaque);
984 // Shadows for transparent windows cause artifacts and performance issues
985 this.native_window.setHasShadow_(opaque);
986 let clear_color = if opaque == YES {
987 NSColor::colorWithSRGBRed_green_blue_alpha_(nil, 0f64, 0f64, 0f64, 1f64)
988 } else {
989 NSColor::clearColor(nil)
990 };
991 this.native_window.setBackgroundColor_(clear_color);
992 let window_number = this.native_window.windowNumber();
993 CGSSetWindowBackgroundBlurRadius(CGSMainConnectionID(), window_number, blur_radius);
994 }
995 }
996
997 fn set_edited(&mut self, edited: bool) {
998 unsafe {
999 let window = self.0.lock().native_window;
1000 msg_send![window, setDocumentEdited: edited as BOOL]
1001 }
1002
1003 // Changing the document edited state resets the traffic light position,
1004 // so we have to move it again.
1005 self.0.lock().move_traffic_light();
1006 }
1007
1008 fn show_character_palette(&self) {
1009 let this = self.0.lock();
1010 let window = this.native_window;
1011 this.executor
1012 .spawn(async move {
1013 unsafe {
1014 let app = NSApplication::sharedApplication(nil);
1015 let _: () = msg_send![app, orderFrontCharacterPalette: window];
1016 }
1017 })
1018 .detach();
1019 }
1020
1021 fn minimize(&self) {
1022 let window = self.0.lock().native_window;
1023 unsafe {
1024 window.miniaturize_(nil);
1025 }
1026 }
1027
1028 fn zoom(&self) {
1029 let this = self.0.lock();
1030 let window = this.native_window;
1031 this.executor
1032 .spawn(async move {
1033 unsafe {
1034 window.zoom_(nil);
1035 }
1036 })
1037 .detach();
1038 }
1039
1040 fn toggle_fullscreen(&self) {
1041 let this = self.0.lock();
1042 let window = this.native_window;
1043 this.executor
1044 .spawn(async move {
1045 unsafe {
1046 window.toggleFullScreen_(nil);
1047 }
1048 })
1049 .detach();
1050 }
1051
1052 fn is_fullscreen(&self) -> bool {
1053 let this = self.0.lock();
1054 let window = this.native_window;
1055
1056 unsafe {
1057 window
1058 .styleMask()
1059 .contains(NSWindowStyleMask::NSFullScreenWindowMask)
1060 }
1061 }
1062
1063 fn on_request_frame(&self, callback: Box<dyn FnMut()>) {
1064 self.0.as_ref().lock().request_frame_callback = Some(callback);
1065 }
1066
1067 fn on_input(&self, callback: Box<dyn FnMut(PlatformInput) -> crate::DispatchEventResult>) {
1068 self.0.as_ref().lock().event_callback = Some(callback);
1069 }
1070
1071 fn on_active_status_change(&self, callback: Box<dyn FnMut(bool)>) {
1072 self.0.as_ref().lock().activate_callback = Some(callback);
1073 }
1074
1075 fn on_resize(&self, callback: Box<dyn FnMut(Size<Pixels>, f32)>) {
1076 self.0.as_ref().lock().resize_callback = Some(callback);
1077 }
1078
1079 fn on_moved(&self, callback: Box<dyn FnMut()>) {
1080 self.0.as_ref().lock().moved_callback = Some(callback);
1081 }
1082
1083 fn on_should_close(&self, callback: Box<dyn FnMut() -> bool>) {
1084 self.0.as_ref().lock().should_close_callback = Some(callback);
1085 }
1086
1087 fn on_close(&self, callback: Box<dyn FnOnce()>) {
1088 self.0.as_ref().lock().close_callback = Some(callback);
1089 }
1090
1091 fn on_appearance_changed(&self, callback: Box<dyn FnMut()>) {
1092 self.0.lock().appearance_changed_callback = Some(callback);
1093 }
1094
1095 fn draw(&self, scene: &crate::Scene) {
1096 let mut this = self.0.lock();
1097 this.renderer.draw(scene);
1098 }
1099
1100 fn sprite_atlas(&self) -> Arc<dyn PlatformAtlas> {
1101 self.0.lock().renderer.sprite_atlas().clone()
1102 }
1103
1104 fn show_window_menu(&self, _position: Point<Pixels>) {}
1105
1106 fn start_system_move(&self) {}
1107
1108 fn should_render_window_controls(&self) -> bool {
1109 false
1110 }
1111}
1112
1113impl rwh::HasWindowHandle for MacWindow {
1114 fn window_handle(&self) -> Result<rwh::WindowHandle<'_>, rwh::HandleError> {
1115 // SAFETY: The AppKitWindowHandle is a wrapper around a pointer to an NSView
1116 unsafe {
1117 Ok(rwh::WindowHandle::borrow_raw(rwh::RawWindowHandle::AppKit(
1118 rwh::AppKitWindowHandle::new(self.0.lock().native_view.cast()),
1119 )))
1120 }
1121 }
1122}
1123
1124impl rwh::HasDisplayHandle for MacWindow {
1125 fn display_handle(&self) -> Result<rwh::DisplayHandle<'_>, rwh::HandleError> {
1126 // SAFETY: This is a no-op on macOS
1127 unsafe {
1128 Ok(rwh::DisplayHandle::borrow_raw(
1129 rwh::AppKitDisplayHandle::new().into(),
1130 ))
1131 }
1132 }
1133}
1134
1135fn get_scale_factor(native_window: id) -> f32 {
1136 let factor = unsafe {
1137 let screen: id = msg_send![native_window, screen];
1138 NSScreen::backingScaleFactor(screen) as f32
1139 };
1140
1141 // We are not certain what triggers this, but it seems that sometimes
1142 // this method would return 0 (https://github.com/zed-industries/zed/issues/6412)
1143 // It seems most likely that this would happen if the window has no screen
1144 // (if it is off-screen), though we'd expect to see viewDidChangeBackingProperties before
1145 // it was rendered for real.
1146 // Regardless, attempt to avoid the issue here.
1147 if factor == 0.0 {
1148 2.
1149 } else {
1150 factor
1151 }
1152}
1153
1154unsafe fn get_window_state(object: &Object) -> Arc<Mutex<MacWindowState>> {
1155 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1156 let rc1 = Arc::from_raw(raw as *mut Mutex<MacWindowState>);
1157 let rc2 = rc1.clone();
1158 mem::forget(rc1);
1159 rc2
1160}
1161
1162unsafe fn drop_window_state(object: &Object) {
1163 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1164 Arc::from_raw(raw as *mut Mutex<MacWindowState>);
1165}
1166
1167extern "C" fn yes(_: &Object, _: Sel) -> BOOL {
1168 YES
1169}
1170
1171extern "C" fn dealloc_window(this: &Object, _: Sel) {
1172 unsafe {
1173 drop_window_state(this);
1174 let _: () = msg_send![super(this, class!(NSWindow)), dealloc];
1175 }
1176}
1177
1178extern "C" fn dealloc_view(this: &Object, _: Sel) {
1179 unsafe {
1180 drop_window_state(this);
1181 let _: () = msg_send![super(this, class!(NSView)), dealloc];
1182 }
1183}
1184
1185extern "C" fn handle_key_equivalent(this: &Object, _: Sel, native_event: id) -> BOOL {
1186 handle_key_event(this, native_event, true)
1187}
1188
1189extern "C" fn handle_key_down(this: &Object, _: Sel, native_event: id) {
1190 handle_key_event(this, native_event, false);
1191}
1192
1193// Things to test if you're modifying this method:
1194// U.S. layout:
1195// - The IME consumes characters like 'j' and 'k', which makes paging through `less` in
1196// the terminal behave incorrectly by default. This behavior should be patched by our
1197// IME integration
1198// Brazilian layout:
1199// - `" space` should create an unmarked quote
1200// - `" backspace` should delete the marked quote
1201// - `" up` should insert a quote, unmark it, and move up one line
1202// - `" cmd-down` should insert a quote, unmark it, and move to the end of the file
1203// - `cmd-ctrl-space` and clicking on an emoji should type it
1204// Czech (QWERTY) layout:
1205// - in vim mode `option-4` should go to end of line (same as $)
1206// Japanese (Romaji) layout:
1207// - Triggering the IME composer (e.g. via typing 'a i' and then the left key), and then selecting
1208// results of different length (e.g. kana -> kanji -> emoji -> back to kanji via the up and down keys)
1209// should maintain the composing state in the editor
1210extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent: bool) -> BOOL {
1211 let window_state = unsafe { get_window_state(this) };
1212 let mut lock = window_state.as_ref().lock();
1213
1214 let window_height = lock.content_size().height;
1215 let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) };
1216
1217 if let Some(PlatformInput::KeyDown(mut event)) = event {
1218 // For certain keystrokes, macOS will first dispatch a "key equivalent" event.
1219 // If that event isn't handled, it will then dispatch a "key down" event. GPUI
1220 // makes no distinction between these two types of events, so we need to ignore
1221 // the "key down" event if we've already just processed its "key equivalent" version.
1222 if key_equivalent {
1223 lock.last_key_equivalent = Some(event.clone());
1224 } else if lock.last_key_equivalent.take().as_ref() == Some(&event) {
1225 return NO;
1226 }
1227
1228 let keydown = event.keystroke.clone();
1229 let fn_modifier = keydown.modifiers.function;
1230 // Ignore events from held-down keys after some of the initially-pressed keys
1231 // were released.
1232 if event.is_held {
1233 if lock.last_fresh_keydown.as_ref() != Some(&keydown) {
1234 return YES;
1235 }
1236 } else {
1237 lock.last_fresh_keydown = Some(keydown.clone());
1238 }
1239 drop(lock);
1240
1241 // Send the event to the input context for IME handling, unless the `fn` modifier is
1242 // being pressed. This will call back into other functions like `insert_text`, etc.
1243 // Note that the IME expects it's actions to be applied immediately, and buffering them
1244 // can break pre-edit
1245 if !fn_modifier {
1246 unsafe {
1247 let input_context: id = msg_send![this, inputContext];
1248 let _: BOOL = msg_send![input_context, handleEvent: native_event];
1249 }
1250 }
1251
1252 let mut handled = false;
1253 let mut lock = window_state.lock();
1254 let previous_keydown_inserted_text = lock.previous_keydown_inserted_text.take();
1255 let mut last_ime = lock.last_ime_action.take();
1256 let mut callback = lock.event_callback.take();
1257 drop(lock);
1258
1259 let is_composing =
1260 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1261 .flatten()
1262 .is_some();
1263
1264 if let Some(ime) = last_ime {
1265 if let ImeInput::InsertText(text, _) = &ime {
1266 if !is_composing {
1267 window_state.lock().previous_keydown_inserted_text = Some(text.clone());
1268 if let Some(callback) = callback.as_mut() {
1269 event.keystroke.ime_key = Some(text.clone());
1270 let _ = callback(PlatformInput::KeyDown(event));
1271 }
1272 }
1273 }
1274
1275 handled = true;
1276 } else if !is_composing {
1277 let is_held = event.is_held;
1278
1279 if let Some(callback) = callback.as_mut() {
1280 handled = !callback(PlatformInput::KeyDown(event)).propagate;
1281 }
1282
1283 if !handled && is_held {
1284 if let Some(text) = previous_keydown_inserted_text {
1285 // MacOS IME is a bit funky, and even when you've told it there's nothing to
1286 // enter it will still swallow certain keys (e.g. 'f', 'j') and not others
1287 // (e.g. 'n'). This is a problem for certain kinds of views, like the terminal.
1288 with_input_handler(this, |input_handler| {
1289 if input_handler.selected_text_range().is_none() {
1290 handled = true;
1291 input_handler.replace_text_in_range(None, &text)
1292 }
1293 });
1294 window_state.lock().previous_keydown_inserted_text = Some(text);
1295 }
1296 }
1297 }
1298
1299 window_state.lock().event_callback = callback;
1300
1301 handled as BOOL
1302 } else {
1303 NO
1304 }
1305}
1306
1307extern "C" fn handle_view_event(this: &Object, _: Sel, native_event: id) {
1308 let window_state = unsafe { get_window_state(this) };
1309 let weak_window_state = Arc::downgrade(&window_state);
1310 let mut lock = window_state.as_ref().lock();
1311 let window_height = lock.content_size().height;
1312 let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) };
1313
1314 if let Some(mut event) = event {
1315 match &mut event {
1316 PlatformInput::MouseDown(
1317 event @ MouseDownEvent {
1318 button: MouseButton::Left,
1319 modifiers: Modifiers { control: true, .. },
1320 ..
1321 },
1322 ) => {
1323 // On mac, a ctrl-left click should be handled as a right click.
1324 *event = MouseDownEvent {
1325 button: MouseButton::Right,
1326 modifiers: Modifiers {
1327 control: false,
1328 ..event.modifiers
1329 },
1330 click_count: 1,
1331 ..*event
1332 };
1333 }
1334
1335 // Handles focusing click.
1336 PlatformInput::MouseDown(
1337 event @ MouseDownEvent {
1338 button: MouseButton::Left,
1339 ..
1340 },
1341 ) if (lock.first_mouse) => {
1342 *event = MouseDownEvent {
1343 first_mouse: true,
1344 ..*event
1345 };
1346 lock.first_mouse = false;
1347 }
1348
1349 // Because we map a ctrl-left_down to a right_down -> right_up let's ignore
1350 // the ctrl-left_up to avoid having a mismatch in button down/up events if the
1351 // user is still holding ctrl when releasing the left mouse button
1352 PlatformInput::MouseUp(
1353 event @ MouseUpEvent {
1354 button: MouseButton::Left,
1355 modifiers: Modifiers { control: true, .. },
1356 ..
1357 },
1358 ) => {
1359 *event = MouseUpEvent {
1360 button: MouseButton::Right,
1361 modifiers: Modifiers {
1362 control: false,
1363 ..event.modifiers
1364 },
1365 click_count: 1,
1366 ..*event
1367 };
1368 }
1369
1370 _ => {}
1371 };
1372
1373 match &event {
1374 PlatformInput::MouseMove(
1375 event @ MouseMoveEvent {
1376 pressed_button: Some(_),
1377 ..
1378 },
1379 ) => {
1380 // Synthetic drag is used for selecting long buffer contents while buffer is being scrolled.
1381 // External file drag and drop is able to emit its own synthetic mouse events which will conflict
1382 // with these ones.
1383 if !lock.external_files_dragged {
1384 lock.synthetic_drag_counter += 1;
1385 let executor = lock.executor.clone();
1386 executor
1387 .spawn(synthetic_drag(
1388 weak_window_state,
1389 lock.synthetic_drag_counter,
1390 event.clone(),
1391 ))
1392 .detach();
1393 }
1394 }
1395
1396 PlatformInput::MouseUp(MouseUpEvent { .. }) => {
1397 lock.synthetic_drag_counter += 1;
1398 }
1399
1400 PlatformInput::ModifiersChanged(ModifiersChangedEvent { modifiers }) => {
1401 // Only raise modifiers changed event when they have actually changed
1402 if let Some(PlatformInput::ModifiersChanged(ModifiersChangedEvent {
1403 modifiers: prev_modifiers,
1404 })) = &lock.previous_modifiers_changed_event
1405 {
1406 if prev_modifiers == modifiers {
1407 return;
1408 }
1409 }
1410
1411 lock.previous_modifiers_changed_event = Some(event.clone());
1412 }
1413
1414 _ => {}
1415 }
1416
1417 if let Some(mut callback) = lock.event_callback.take() {
1418 drop(lock);
1419 callback(event);
1420 window_state.lock().event_callback = Some(callback);
1421 }
1422 }
1423}
1424
1425// Allows us to receive `cmd-.` (the shortcut for closing a dialog)
1426// https://bugs.eclipse.org/bugs/show_bug.cgi?id=300620#c6
1427extern "C" fn cancel_operation(this: &Object, _sel: Sel, _sender: id) {
1428 let window_state = unsafe { get_window_state(this) };
1429 let mut lock = window_state.as_ref().lock();
1430
1431 let keystroke = Keystroke {
1432 modifiers: Default::default(),
1433 key: ".".into(),
1434 ime_key: None,
1435 };
1436 let event = PlatformInput::KeyDown(KeyDownEvent {
1437 keystroke: keystroke.clone(),
1438 is_held: false,
1439 });
1440
1441 lock.last_fresh_keydown = Some(keystroke);
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
1449extern "C" fn window_did_change_occlusion_state(this: &Object, _: Sel, _: id) {
1450 let window_state = unsafe { get_window_state(this) };
1451 let lock = &mut *window_state.lock();
1452 unsafe {
1453 if lock
1454 .native_window
1455 .occlusionState()
1456 .contains(NSWindowOcclusionState::NSWindowOcclusionStateVisible)
1457 {
1458 lock.start_display_link();
1459 } else {
1460 lock.stop_display_link();
1461 }
1462 }
1463}
1464
1465extern "C" fn window_did_resize(this: &Object, _: Sel, _: id) {
1466 let window_state = unsafe { get_window_state(this) };
1467 window_state.as_ref().lock().move_traffic_light();
1468}
1469
1470extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) {
1471 let window_state = unsafe { get_window_state(this) };
1472 let mut lock = window_state.as_ref().lock();
1473 lock.fullscreen_restore_bounds = lock.bounds();
1474}
1475
1476extern "C" fn window_did_move(this: &Object, _: Sel, _: id) {
1477 let window_state = unsafe { get_window_state(this) };
1478 let mut lock = window_state.as_ref().lock();
1479 if let Some(mut callback) = lock.moved_callback.take() {
1480 drop(lock);
1481 callback();
1482 window_state.lock().moved_callback = Some(callback);
1483 }
1484}
1485
1486extern "C" fn window_did_change_screen(this: &Object, _: Sel, _: id) {
1487 let window_state = unsafe { get_window_state(this) };
1488 let mut lock = window_state.as_ref().lock();
1489 lock.start_display_link();
1490}
1491
1492extern "C" fn window_did_change_key_status(this: &Object, selector: Sel, _: id) {
1493 let window_state = unsafe { get_window_state(this) };
1494 let lock = window_state.lock();
1495 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1496
1497 // When opening a pop-up while the application isn't active, Cocoa sends a spurious
1498 // `windowDidBecomeKey` message to the previous key window even though that window
1499 // isn't actually key. This causes a bug if the application is later activated while
1500 // the pop-up is still open, making it impossible to activate the previous key window
1501 // even if the pop-up gets closed. The only way to activate it again is to de-activate
1502 // the app and re-activate it, which is a pretty bad UX.
1503 // The following code detects the spurious event and invokes `resignKeyWindow`:
1504 // in theory, we're not supposed to invoke this method manually but it balances out
1505 // the spurious `becomeKeyWindow` event and helps us work around that bug.
1506 if selector == sel!(windowDidBecomeKey:) && !is_active {
1507 unsafe {
1508 let _: () = msg_send![lock.native_window, resignKeyWindow];
1509 return;
1510 }
1511 }
1512
1513 let executor = lock.executor.clone();
1514 drop(lock);
1515 executor
1516 .spawn(async move {
1517 let mut lock = window_state.as_ref().lock();
1518 if let Some(mut callback) = lock.activate_callback.take() {
1519 drop(lock);
1520 callback(is_active);
1521 window_state.lock().activate_callback = Some(callback);
1522 };
1523 })
1524 .detach();
1525}
1526
1527extern "C" fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
1528 let window_state = unsafe { get_window_state(this) };
1529 let mut lock = window_state.as_ref().lock();
1530 if let Some(mut callback) = lock.should_close_callback.take() {
1531 drop(lock);
1532 let should_close = callback();
1533 window_state.lock().should_close_callback = Some(callback);
1534 should_close as BOOL
1535 } else {
1536 YES
1537 }
1538}
1539
1540extern "C" fn close_window(this: &Object, _: Sel) {
1541 unsafe {
1542 let close_callback = {
1543 let window_state = get_window_state(this);
1544 let mut lock = window_state.as_ref().lock();
1545 lock.close_callback.take()
1546 };
1547
1548 if let Some(callback) = close_callback {
1549 callback();
1550 }
1551
1552 let _: () = msg_send![super(this, class!(NSWindow)), close];
1553 }
1554}
1555
1556extern "C" fn make_backing_layer(this: &Object, _: Sel) -> id {
1557 let window_state = unsafe { get_window_state(this) };
1558 let window_state = window_state.as_ref().lock();
1559 window_state.renderer.layer_ptr() as id
1560}
1561
1562extern "C" fn view_did_change_backing_properties(this: &Object, _: Sel) {
1563 let window_state = unsafe { get_window_state(this) };
1564 let mut lock = window_state.as_ref().lock();
1565
1566 let scale_factor = lock.scale_factor() as f64;
1567 let size = lock.content_size();
1568 let drawable_size: NSSize = NSSize {
1569 width: f64::from(size.width) * scale_factor,
1570 height: f64::from(size.height) * scale_factor,
1571 };
1572 unsafe {
1573 let _: () = msg_send![
1574 lock.renderer.layer(),
1575 setContentsScale: scale_factor
1576 ];
1577 }
1578
1579 lock.update_drawable_size(drawable_size);
1580
1581 if let Some(mut callback) = lock.resize_callback.take() {
1582 let content_size = lock.content_size();
1583 let scale_factor = lock.scale_factor();
1584 drop(lock);
1585 callback(content_size, scale_factor);
1586 window_state.as_ref().lock().resize_callback = Some(callback);
1587 };
1588}
1589
1590extern "C" fn set_frame_size(this: &Object, _: Sel, size: NSSize) {
1591 let window_state = unsafe { get_window_state(this) };
1592 let mut lock = window_state.as_ref().lock();
1593
1594 if lock.content_size() == size.into() {
1595 return;
1596 }
1597
1598 unsafe {
1599 let _: () = msg_send![super(this, class!(NSView)), setFrameSize: size];
1600 }
1601
1602 let scale_factor = lock.scale_factor() as f64;
1603 let drawable_size: NSSize = NSSize {
1604 width: size.width * scale_factor,
1605 height: size.height * scale_factor,
1606 };
1607
1608 lock.update_drawable_size(drawable_size);
1609
1610 drop(lock);
1611 let mut lock = window_state.lock();
1612 if let Some(mut callback) = lock.resize_callback.take() {
1613 let content_size = lock.content_size();
1614 let scale_factor = lock.scale_factor();
1615 drop(lock);
1616 callback(content_size, scale_factor);
1617 window_state.lock().resize_callback = Some(callback);
1618 };
1619}
1620
1621extern "C" fn display_layer(this: &Object, _: Sel, _: id) {
1622 let window_state = unsafe { get_window_state(this) };
1623 let mut lock = window_state.lock();
1624 if let Some(mut callback) = lock.request_frame_callback.take() {
1625 #[cfg(not(feature = "macos-blade"))]
1626 lock.renderer.set_presents_with_transaction(true);
1627 lock.stop_display_link();
1628 drop(lock);
1629 callback();
1630
1631 let mut lock = window_state.lock();
1632 lock.request_frame_callback = Some(callback);
1633 #[cfg(not(feature = "macos-blade"))]
1634 lock.renderer.set_presents_with_transaction(false);
1635 lock.start_display_link();
1636 }
1637}
1638
1639unsafe extern "C" fn step(view: *mut c_void) {
1640 let view = view as id;
1641 let window_state = unsafe { get_window_state(&*view) };
1642 let mut lock = window_state.lock();
1643
1644 if let Some(mut callback) = lock.request_frame_callback.take() {
1645 drop(lock);
1646 callback();
1647 window_state.lock().request_frame_callback = Some(callback);
1648 }
1649}
1650
1651extern "C" fn valid_attributes_for_marked_text(_: &Object, _: Sel) -> id {
1652 unsafe { msg_send![class!(NSArray), array] }
1653}
1654
1655extern "C" fn has_marked_text(this: &Object, _: Sel) -> BOOL {
1656 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1657 .flatten()
1658 .is_some() as BOOL
1659}
1660
1661extern "C" fn marked_range(this: &Object, _: Sel) -> NSRange {
1662 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1663 .flatten()
1664 .map_or(NSRange::invalid(), |range| range.into())
1665}
1666
1667extern "C" fn selected_range(this: &Object, _: Sel) -> NSRange {
1668 with_input_handler(this, |input_handler| input_handler.selected_text_range())
1669 .flatten()
1670 .map_or(NSRange::invalid(), |range| range.into())
1671}
1672
1673extern "C" fn first_rect_for_character_range(
1674 this: &Object,
1675 _: Sel,
1676 range: NSRange,
1677 _: id,
1678) -> NSRect {
1679 let frame = unsafe {
1680 let window = get_window_state(this).lock().native_window;
1681 NSView::frame(window)
1682 };
1683 with_input_handler(this, |input_handler| {
1684 input_handler.bounds_for_range(range.to_range()?)
1685 })
1686 .flatten()
1687 .map_or(
1688 NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)),
1689 |bounds| {
1690 NSRect::new(
1691 NSPoint::new(
1692 frame.origin.x + bounds.origin.x.0 as f64,
1693 frame.origin.y + frame.size.height
1694 - bounds.origin.y.0 as f64
1695 - bounds.size.height.0 as f64,
1696 ),
1697 NSSize::new(bounds.size.width.0 as f64, bounds.size.height.0 as f64),
1698 )
1699 },
1700 )
1701}
1702
1703extern "C" fn insert_text(this: &Object, _: Sel, text: id, replacement_range: NSRange) {
1704 unsafe {
1705 let is_attributed_string: BOOL =
1706 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1707 let text: id = if is_attributed_string == YES {
1708 msg_send![text, string]
1709 } else {
1710 text
1711 };
1712
1713 let text = text.to_str();
1714 let replacement_range = replacement_range.to_range();
1715 send_to_input_handler(
1716 this,
1717 ImeInput::InsertText(text.to_string(), replacement_range),
1718 );
1719 }
1720}
1721
1722extern "C" fn set_marked_text(
1723 this: &Object,
1724 _: Sel,
1725 text: id,
1726 selected_range: NSRange,
1727 replacement_range: NSRange,
1728) {
1729 unsafe {
1730 let is_attributed_string: BOOL =
1731 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1732 let text: id = if is_attributed_string == YES {
1733 msg_send![text, string]
1734 } else {
1735 text
1736 };
1737 let selected_range = selected_range.to_range();
1738 let replacement_range = replacement_range.to_range();
1739 let text = text.to_str();
1740
1741 send_to_input_handler(
1742 this,
1743 ImeInput::SetMarkedText(text.to_string(), replacement_range, selected_range),
1744 );
1745 }
1746}
1747extern "C" fn unmark_text(this: &Object, _: Sel) {
1748 send_to_input_handler(this, ImeInput::UnmarkText);
1749}
1750
1751extern "C" fn attributed_substring_for_proposed_range(
1752 this: &Object,
1753 _: Sel,
1754 range: NSRange,
1755 _actual_range: *mut c_void,
1756) -> id {
1757 with_input_handler(this, |input_handler| {
1758 let range = range.to_range()?;
1759 if range.is_empty() {
1760 return None;
1761 }
1762
1763 let selected_text = input_handler.text_for_range(range)?;
1764 unsafe {
1765 let string: id = msg_send![class!(NSAttributedString), alloc];
1766 let string: id = msg_send![string, initWithString: ns_string(&selected_text)];
1767 Some(string)
1768 }
1769 })
1770 .flatten()
1771 .unwrap_or(nil)
1772}
1773
1774extern "C" fn do_command_by_selector(_: &Object, _: Sel, _: Sel) {}
1775
1776extern "C" fn view_did_change_effective_appearance(this: &Object, _: Sel) {
1777 unsafe {
1778 let state = get_window_state(this);
1779 let mut lock = state.as_ref().lock();
1780 if let Some(mut callback) = lock.appearance_changed_callback.take() {
1781 drop(lock);
1782 callback();
1783 state.lock().appearance_changed_callback = Some(callback);
1784 }
1785 }
1786}
1787
1788extern "C" fn accepts_first_mouse(this: &Object, _: Sel, _: id) -> BOOL {
1789 let window_state = unsafe { get_window_state(this) };
1790 let mut lock = window_state.as_ref().lock();
1791 lock.first_mouse = true;
1792 YES
1793}
1794
1795extern "C" fn dragging_entered(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1796 let window_state = unsafe { get_window_state(this) };
1797 let position = drag_event_position(&window_state, dragging_info);
1798 let paths = external_paths_from_event(dragging_info);
1799 if let Some(event) =
1800 paths.map(|paths| PlatformInput::FileDrop(FileDropEvent::Entered { position, paths }))
1801 {
1802 if send_new_event(&window_state, event) {
1803 window_state.lock().external_files_dragged = true;
1804 return NSDragOperationCopy;
1805 }
1806 }
1807 NSDragOperationNone
1808}
1809
1810extern "C" fn dragging_updated(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1811 let window_state = unsafe { get_window_state(this) };
1812 let position = drag_event_position(&window_state, dragging_info);
1813 if send_new_event(
1814 &window_state,
1815 PlatformInput::FileDrop(FileDropEvent::Pending { position }),
1816 ) {
1817 NSDragOperationCopy
1818 } else {
1819 NSDragOperationNone
1820 }
1821}
1822
1823extern "C" fn dragging_exited(this: &Object, _: Sel, _: id) {
1824 let window_state = unsafe { get_window_state(this) };
1825 send_new_event(
1826 &window_state,
1827 PlatformInput::FileDrop(FileDropEvent::Exited),
1828 );
1829 window_state.lock().external_files_dragged = false;
1830}
1831
1832extern "C" fn perform_drag_operation(this: &Object, _: Sel, dragging_info: id) -> BOOL {
1833 let window_state = unsafe { get_window_state(this) };
1834 let position = drag_event_position(&window_state, dragging_info);
1835 if send_new_event(
1836 &window_state,
1837 PlatformInput::FileDrop(FileDropEvent::Submit { position }),
1838 ) {
1839 YES
1840 } else {
1841 NO
1842 }
1843}
1844
1845fn external_paths_from_event(dragging_info: *mut Object) -> Option<ExternalPaths> {
1846 let mut paths = SmallVec::new();
1847 let pasteboard: id = unsafe { msg_send![dragging_info, draggingPasteboard] };
1848 let filenames = unsafe { NSPasteboard::propertyListForType(pasteboard, NSFilenamesPboardType) };
1849 if filenames == nil {
1850 return None;
1851 }
1852 for file in unsafe { filenames.iter() } {
1853 let path = unsafe {
1854 let f = NSString::UTF8String(file);
1855 CStr::from_ptr(f).to_string_lossy().into_owned()
1856 };
1857 paths.push(PathBuf::from(path))
1858 }
1859 Some(ExternalPaths(paths))
1860}
1861
1862extern "C" fn conclude_drag_operation(this: &Object, _: Sel, _: id) {
1863 let window_state = unsafe { get_window_state(this) };
1864 send_new_event(
1865 &window_state,
1866 PlatformInput::FileDrop(FileDropEvent::Exited),
1867 );
1868}
1869
1870async fn synthetic_drag(
1871 window_state: Weak<Mutex<MacWindowState>>,
1872 drag_id: usize,
1873 event: MouseMoveEvent,
1874) {
1875 loop {
1876 Timer::after(Duration::from_millis(16)).await;
1877 if let Some(window_state) = window_state.upgrade() {
1878 let mut lock = window_state.lock();
1879 if lock.synthetic_drag_counter == drag_id {
1880 if let Some(mut callback) = lock.event_callback.take() {
1881 drop(lock);
1882 callback(PlatformInput::MouseMove(event.clone()));
1883 window_state.lock().event_callback = Some(callback);
1884 }
1885 } else {
1886 break;
1887 }
1888 }
1889 }
1890}
1891
1892fn send_new_event(window_state_lock: &Mutex<MacWindowState>, e: PlatformInput) -> bool {
1893 let window_state = window_state_lock.lock().event_callback.take();
1894 if let Some(mut callback) = window_state {
1895 callback(e);
1896 window_state_lock.lock().event_callback = Some(callback);
1897 true
1898 } else {
1899 false
1900 }
1901}
1902
1903fn drag_event_position(window_state: &Mutex<MacWindowState>, dragging_info: id) -> Point<Pixels> {
1904 let drag_location: NSPoint = unsafe { msg_send![dragging_info, draggingLocation] };
1905 convert_mouse_position(drag_location, window_state.lock().content_size().height)
1906}
1907
1908fn with_input_handler<F, R>(window: &Object, f: F) -> Option<R>
1909where
1910 F: FnOnce(&mut PlatformInputHandler) -> R,
1911{
1912 let window_state = unsafe { get_window_state(window) };
1913 let mut lock = window_state.as_ref().lock();
1914 if let Some(mut input_handler) = lock.input_handler.take() {
1915 drop(lock);
1916 let result = f(&mut input_handler);
1917 window_state.lock().input_handler = Some(input_handler);
1918 Some(result)
1919 } else {
1920 None
1921 }
1922}
1923
1924fn send_to_input_handler(window: &Object, ime: ImeInput) {
1925 unsafe {
1926 let window_state = get_window_state(window);
1927 let mut lock = window_state.lock();
1928
1929 lock.last_ime_action = Some(ime.clone());
1930 if let Some(mut input_handler) = lock.input_handler.take() {
1931 drop(lock);
1932 match ime {
1933 ImeInput::InsertText(text, range) => {
1934 input_handler.replace_text_in_range(range, &text)
1935 }
1936 ImeInput::SetMarkedText(text, range, marked_range) => {
1937 input_handler.replace_and_mark_text_in_range(range, &text, marked_range)
1938 }
1939 ImeInput::UnmarkText => input_handler.unmark_text(),
1940 }
1941 window_state.lock().input_handler = Some(input_handler);
1942 }
1943 }
1944}
1945
1946unsafe fn display_id_for_screen(screen: id) -> CGDirectDisplayID {
1947 let device_description = NSScreen::deviceDescription(screen);
1948 let screen_number_key: id = NSString::alloc(nil).init_str("NSScreenNumber");
1949 let screen_number = device_description.objectForKey_(screen_number_key);
1950 let screen_number: NSUInteger = msg_send![screen_number, unsignedIntegerValue];
1951 screen_number as CGDirectDisplayID
1952}