1use super::{global_bounds_from_ns_rect, ns_string, MacDisplay, MetalRenderer, NSRange};
2use crate::{
3 global_bounds_to_ns_rect, platform::PlatformInputHandler, point, px, size, AnyWindowHandle,
4 Bounds, ExternalPaths, FileDropEvent, ForegroundExecutor, GlobalPixels, KeyDownEvent,
5 Keystroke, Modifiers, ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent,
6 MouseUpEvent, Pixels, PlatformAtlas, PlatformDisplay, PlatformInput, PlatformWindow, Point,
7 PromptLevel, Size, Timer, WindowAppearance, WindowBounds, WindowKind, WindowOptions,
8};
9use block::ConcreteBlock;
10use cocoa::{
11 appkit::{
12 CGPoint, NSApplication, NSBackingStoreBuffered, NSEventModifierFlags,
13 NSFilenamesPboardType, NSPasteboard, NSScreen, NSView, NSViewHeightSizable,
14 NSViewWidthSizable, NSWindow, NSWindowButton, NSWindowCollectionBehavior,
15 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::CGRect;
24use ctor::ctor;
25use foreign_types::ForeignTypeRef;
26use futures::channel::oneshot;
27use objc::{
28 class,
29 declare::ClassDecl,
30 msg_send,
31 runtime::{Class, Object, Protocol, Sel, BOOL, NO, YES},
32 sel, sel_impl,
33};
34use parking_lot::Mutex;
35use raw_window_handle::{
36 AppKitDisplayHandle, AppKitWindowHandle, DisplayHandle, HasDisplayHandle, HasWindowHandle,
37 RawWindowHandle, WindowHandle,
38};
39use smallvec::SmallVec;
40use std::{
41 any::Any,
42 cell::{Cell, RefCell},
43 ffi::{c_void, CStr},
44 mem,
45 ops::Range,
46 os::raw::c_char,
47 path::PathBuf,
48 ptr::{self, NonNull},
49 rc::Rc,
50 sync::{Arc, Weak},
51 time::Duration,
52};
53
54const WINDOW_STATE_IVAR: &str = "windowState";
55
56static mut WINDOW_CLASS: *const Class = ptr::null();
57static mut PANEL_CLASS: *const Class = ptr::null();
58static mut VIEW_CLASS: *const Class = ptr::null();
59
60#[allow(non_upper_case_globals)]
61const NSWindowStyleMaskNonactivatingPanel: NSWindowStyleMask =
62 unsafe { NSWindowStyleMask::from_bits_unchecked(1 << 7) };
63#[allow(non_upper_case_globals)]
64const NSNormalWindowLevel: NSInteger = 0;
65#[allow(non_upper_case_globals)]
66const NSPopUpWindowLevel: NSInteger = 101;
67#[allow(non_upper_case_globals)]
68const NSTrackingMouseEnteredAndExited: NSUInteger = 0x01;
69#[allow(non_upper_case_globals)]
70const NSTrackingMouseMoved: NSUInteger = 0x02;
71#[allow(non_upper_case_globals)]
72const NSTrackingActiveAlways: NSUInteger = 0x80;
73#[allow(non_upper_case_globals)]
74const NSTrackingInVisibleRect: NSUInteger = 0x200;
75#[allow(non_upper_case_globals)]
76const NSWindowAnimationBehaviorUtilityWindow: NSInteger = 4;
77#[allow(non_upper_case_globals)]
78const NSViewLayerContentsRedrawDuringViewResize: NSInteger = 2;
79// https://developer.apple.com/documentation/appkit/nsdragoperation
80type NSDragOperation = NSUInteger;
81#[allow(non_upper_case_globals)]
82const NSDragOperationNone: NSDragOperation = 0;
83#[allow(non_upper_case_globals)]
84const NSDragOperationCopy: NSDragOperation = 1;
85
86#[ctor]
87unsafe fn build_classes() {
88 WINDOW_CLASS = build_window_class("GPUIWindow", class!(NSWindow));
89 PANEL_CLASS = build_window_class("GPUIPanel", class!(NSPanel));
90 VIEW_CLASS = {
91 let mut decl = ClassDecl::new("GPUIView", class!(NSView)).unwrap();
92 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
93
94 decl.add_method(sel!(dealloc), dealloc_view as extern "C" fn(&Object, Sel));
95
96 decl.add_method(
97 sel!(performKeyEquivalent:),
98 handle_key_equivalent as extern "C" fn(&Object, Sel, id) -> BOOL,
99 );
100 decl.add_method(
101 sel!(keyDown:),
102 handle_key_down as extern "C" fn(&Object, Sel, id),
103 );
104 decl.add_method(
105 sel!(mouseDown:),
106 handle_view_event as extern "C" fn(&Object, Sel, id),
107 );
108 decl.add_method(
109 sel!(mouseUp:),
110 handle_view_event as extern "C" fn(&Object, Sel, id),
111 );
112 decl.add_method(
113 sel!(rightMouseDown:),
114 handle_view_event as extern "C" fn(&Object, Sel, id),
115 );
116 decl.add_method(
117 sel!(rightMouseUp:),
118 handle_view_event as extern "C" fn(&Object, Sel, id),
119 );
120 decl.add_method(
121 sel!(otherMouseDown:),
122 handle_view_event as extern "C" fn(&Object, Sel, id),
123 );
124 decl.add_method(
125 sel!(otherMouseUp:),
126 handle_view_event as extern "C" fn(&Object, Sel, id),
127 );
128 decl.add_method(
129 sel!(mouseMoved:),
130 handle_view_event as extern "C" fn(&Object, Sel, id),
131 );
132 decl.add_method(
133 sel!(mouseExited:),
134 handle_view_event as extern "C" fn(&Object, Sel, id),
135 );
136 decl.add_method(
137 sel!(mouseDragged:),
138 handle_view_event as extern "C" fn(&Object, Sel, id),
139 );
140 decl.add_method(
141 sel!(scrollWheel:),
142 handle_view_event as extern "C" fn(&Object, Sel, id),
143 );
144 decl.add_method(
145 sel!(flagsChanged:),
146 handle_view_event as extern "C" fn(&Object, Sel, id),
147 );
148 decl.add_method(
149 sel!(cancelOperation:),
150 cancel_operation as extern "C" fn(&Object, Sel, id),
151 );
152
153 decl.add_method(
154 sel!(makeBackingLayer),
155 make_backing_layer as extern "C" fn(&Object, Sel) -> id,
156 );
157
158 decl.add_protocol(Protocol::get("CALayerDelegate").unwrap());
159 decl.add_method(
160 sel!(viewDidChangeBackingProperties),
161 view_did_change_backing_properties as extern "C" fn(&Object, Sel),
162 );
163 decl.add_method(
164 sel!(setFrameSize:),
165 set_frame_size as extern "C" fn(&Object, Sel, NSSize),
166 );
167 decl.add_method(
168 sel!(displayLayer:),
169 display_layer as extern "C" fn(&Object, Sel, id),
170 );
171
172 decl.add_protocol(Protocol::get("NSTextInputClient").unwrap());
173 decl.add_method(
174 sel!(validAttributesForMarkedText),
175 valid_attributes_for_marked_text as extern "C" fn(&Object, Sel) -> id,
176 );
177 decl.add_method(
178 sel!(hasMarkedText),
179 has_marked_text as extern "C" fn(&Object, Sel) -> BOOL,
180 );
181 decl.add_method(
182 sel!(markedRange),
183 marked_range as extern "C" fn(&Object, Sel) -> NSRange,
184 );
185 decl.add_method(
186 sel!(selectedRange),
187 selected_range as extern "C" fn(&Object, Sel) -> NSRange,
188 );
189 decl.add_method(
190 sel!(firstRectForCharacterRange:actualRange:),
191 first_rect_for_character_range as extern "C" fn(&Object, Sel, NSRange, id) -> NSRect,
192 );
193 decl.add_method(
194 sel!(insertText:replacementRange:),
195 insert_text as extern "C" fn(&Object, Sel, id, NSRange),
196 );
197 decl.add_method(
198 sel!(setMarkedText:selectedRange:replacementRange:),
199 set_marked_text as extern "C" fn(&Object, Sel, id, NSRange, NSRange),
200 );
201 decl.add_method(sel!(unmarkText), unmark_text as extern "C" fn(&Object, Sel));
202 decl.add_method(
203 sel!(attributedSubstringForProposedRange:actualRange:),
204 attributed_substring_for_proposed_range
205 as extern "C" fn(&Object, Sel, NSRange, *mut c_void) -> id,
206 );
207 decl.add_method(
208 sel!(viewDidChangeEffectiveAppearance),
209 view_did_change_effective_appearance as extern "C" fn(&Object, Sel),
210 );
211
212 // Suppress beep on keystrokes with modifier keys.
213 decl.add_method(
214 sel!(doCommandBySelector:),
215 do_command_by_selector as extern "C" fn(&Object, Sel, Sel),
216 );
217
218 decl.add_method(
219 sel!(acceptsFirstMouse:),
220 accepts_first_mouse as extern "C" fn(&Object, Sel, id) -> BOOL,
221 );
222
223 decl.register()
224 };
225}
226
227pub(crate) fn convert_mouse_position(position: NSPoint, window_height: Pixels) -> Point<Pixels> {
228 point(
229 px(position.x as f32),
230 // MacOS screen coordinates are relative to bottom left
231 window_height - px(position.y as f32),
232 )
233}
234
235unsafe fn build_window_class(name: &'static str, superclass: &Class) -> *const Class {
236 let mut decl = ClassDecl::new(name, superclass).unwrap();
237 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
238 decl.add_method(sel!(dealloc), dealloc_window as extern "C" fn(&Object, Sel));
239 decl.add_method(
240 sel!(canBecomeMainWindow),
241 yes as extern "C" fn(&Object, Sel) -> BOOL,
242 );
243 decl.add_method(
244 sel!(canBecomeKeyWindow),
245 yes as extern "C" fn(&Object, Sel) -> BOOL,
246 );
247 decl.add_method(
248 sel!(windowDidResize:),
249 window_did_resize as extern "C" fn(&Object, Sel, id),
250 );
251 decl.add_method(
252 sel!(windowWillEnterFullScreen:),
253 window_will_enter_fullscreen as extern "C" fn(&Object, Sel, id),
254 );
255 decl.add_method(
256 sel!(windowWillExitFullScreen:),
257 window_will_exit_fullscreen as extern "C" fn(&Object, Sel, id),
258 );
259 decl.add_method(
260 sel!(windowDidMove:),
261 window_did_move as extern "C" fn(&Object, Sel, id),
262 );
263 decl.add_method(
264 sel!(windowDidBecomeKey:),
265 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
266 );
267 decl.add_method(
268 sel!(windowDidResignKey:),
269 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
270 );
271 decl.add_method(
272 sel!(windowShouldClose:),
273 window_should_close as extern "C" fn(&Object, Sel, id) -> BOOL,
274 );
275
276 decl.add_method(sel!(close), close_window as extern "C" fn(&Object, Sel));
277
278 decl.add_method(
279 sel!(draggingEntered:),
280 dragging_entered as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
281 );
282 decl.add_method(
283 sel!(draggingUpdated:),
284 dragging_updated as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
285 );
286 decl.add_method(
287 sel!(draggingExited:),
288 dragging_exited as extern "C" fn(&Object, Sel, id),
289 );
290 decl.add_method(
291 sel!(performDragOperation:),
292 perform_drag_operation as extern "C" fn(&Object, Sel, id) -> BOOL,
293 );
294 decl.add_method(
295 sel!(concludeDragOperation:),
296 conclude_drag_operation as extern "C" fn(&Object, Sel, id),
297 );
298
299 decl.register()
300}
301
302///Used to track what the IME does when we send it a keystroke.
303///This is only used to handle the case where the IME mysteriously
304///swallows certain keys.
305///
306///Basically a direct copy of the approach that WezTerm uses in:
307///github.com/wez/wezterm : d5755f3e : window/src/os/macos/window.rs
308enum ImeState {
309 Continue,
310 Acted,
311 None,
312}
313
314struct InsertText {
315 replacement_range: Option<Range<usize>>,
316 text: String,
317}
318
319struct MacWindowState {
320 handle: AnyWindowHandle,
321 executor: ForegroundExecutor,
322 native_window: id,
323 native_view: NonNull<id>,
324 renderer: MetalRenderer,
325 kind: WindowKind,
326 request_frame_callback: Option<Box<dyn FnMut()>>,
327 event_callback: Option<Box<dyn FnMut(PlatformInput) -> bool>>,
328 activate_callback: Option<Box<dyn FnMut(bool)>>,
329 resize_callback: Option<Box<dyn FnMut(Size<Pixels>, f32)>>,
330 fullscreen_callback: Option<Box<dyn FnMut(bool)>>,
331 moved_callback: Option<Box<dyn FnMut()>>,
332 should_close_callback: Option<Box<dyn FnMut() -> bool>>,
333 close_callback: Option<Box<dyn FnOnce()>>,
334 appearance_changed_callback: Option<Box<dyn FnMut()>>,
335 input_handler: Option<PlatformInputHandler>,
336 pending_key_down: Option<(KeyDownEvent, Option<InsertText>)>,
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 ime_state: ImeState,
344 // Retains the last IME Text
345 ime_text: Option<String>,
346 external_files_dragged: bool,
347}
348
349impl MacWindowState {
350 fn move_traffic_light(&self) {
351 if let Some(traffic_light_position) = self.traffic_light_position {
352 let titlebar_height = self.titlebar_height();
353
354 unsafe {
355 let close_button: id = msg_send![
356 self.native_window,
357 standardWindowButton: NSWindowButton::NSWindowCloseButton
358 ];
359 let min_button: id = msg_send![
360 self.native_window,
361 standardWindowButton: NSWindowButton::NSWindowMiniaturizeButton
362 ];
363 let zoom_button: id = msg_send![
364 self.native_window,
365 standardWindowButton: NSWindowButton::NSWindowZoomButton
366 ];
367
368 let mut close_button_frame: CGRect = msg_send![close_button, frame];
369 let mut min_button_frame: CGRect = msg_send![min_button, frame];
370 let mut zoom_button_frame: CGRect = msg_send![zoom_button, frame];
371 let mut origin = point(
372 traffic_light_position.x,
373 titlebar_height
374 - traffic_light_position.y
375 - px(close_button_frame.size.height as f32),
376 );
377 let button_spacing =
378 px((min_button_frame.origin.x - close_button_frame.origin.x) as f32);
379
380 close_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
381 let _: () = msg_send![close_button, setFrame: close_button_frame];
382 origin.x += button_spacing;
383
384 min_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
385 let _: () = msg_send![min_button, setFrame: min_button_frame];
386 origin.x += button_spacing;
387
388 zoom_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
389 let _: () = msg_send![zoom_button, setFrame: zoom_button_frame];
390 origin.x += button_spacing;
391 }
392 }
393 }
394
395 fn is_fullscreen(&self) -> bool {
396 unsafe {
397 let style_mask = self.native_window.styleMask();
398 style_mask.contains(NSWindowStyleMask::NSFullScreenWindowMask)
399 }
400 }
401
402 fn bounds(&self) -> WindowBounds {
403 unsafe {
404 if self.is_fullscreen() {
405 return WindowBounds::Fullscreen;
406 }
407
408 let frame = self.frame();
409 let screen_size = self.native_window.screen().visibleFrame().into();
410 if frame.size == screen_size {
411 WindowBounds::Maximized
412 } else {
413 WindowBounds::Fixed(frame)
414 }
415 }
416 }
417
418 fn frame(&self) -> Bounds<GlobalPixels> {
419 let frame = unsafe { NSWindow::frame(self.native_window) };
420 global_bounds_from_ns_rect(frame)
421 }
422
423 fn content_size(&self) -> Size<Pixels> {
424 let NSSize { width, height, .. } =
425 unsafe { NSView::frame(self.native_window.contentView()) }.size;
426 size(px(width as f32), px(height as f32))
427 }
428
429 fn scale_factor(&self) -> f32 {
430 get_scale_factor(self.native_window)
431 }
432
433 fn titlebar_height(&self) -> Pixels {
434 unsafe {
435 let frame = NSWindow::frame(self.native_window);
436 let content_layout_rect: CGRect = msg_send![self.native_window, contentLayoutRect];
437 px((frame.size.height - content_layout_rect.size.height) as f32)
438 }
439 }
440
441 fn to_screen_ns_point(&self, point: Point<Pixels>) -> NSPoint {
442 unsafe {
443 let point = NSPoint::new(
444 point.x.into(),
445 (self.content_size().height - point.y).into(),
446 );
447 msg_send![self.native_window, convertPointToScreen: point]
448 }
449 }
450}
451
452unsafe impl Send for MacWindowState {}
453
454pub(crate) struct MacWindow(Arc<Mutex<MacWindowState>>);
455
456impl MacWindow {
457 pub fn open(
458 handle: AnyWindowHandle,
459 options: WindowOptions,
460 executor: ForegroundExecutor,
461 ) -> Self {
462 unsafe {
463 let pool = NSAutoreleasePool::new(nil);
464
465 let mut style_mask;
466 if let Some(titlebar) = options.titlebar.as_ref() {
467 style_mask = NSWindowStyleMask::NSClosableWindowMask
468 | NSWindowStyleMask::NSMiniaturizableWindowMask
469 | NSWindowStyleMask::NSResizableWindowMask
470 | NSWindowStyleMask::NSTitledWindowMask;
471
472 if titlebar.appears_transparent {
473 style_mask |= NSWindowStyleMask::NSFullSizeContentViewWindowMask;
474 }
475 } else {
476 style_mask = NSWindowStyleMask::NSTitledWindowMask
477 | NSWindowStyleMask::NSFullSizeContentViewWindowMask;
478 }
479
480 let native_window: id = match options.kind {
481 WindowKind::Normal => msg_send![WINDOW_CLASS, alloc],
482 WindowKind::PopUp => {
483 style_mask |= NSWindowStyleMaskNonactivatingPanel;
484 msg_send![PANEL_CLASS, alloc]
485 }
486 };
487
488 let display = options
489 .display_id
490 .and_then(MacDisplay::find_by_id)
491 .unwrap_or_else(MacDisplay::primary);
492
493 let mut target_screen = nil;
494 let screens = NSScreen::screens(nil);
495 let count: u64 = cocoa::foundation::NSArray::count(screens);
496 for i in 0..count {
497 let screen = cocoa::foundation::NSArray::objectAtIndex(screens, i);
498 let device_description = NSScreen::deviceDescription(screen);
499 let screen_number_key: id = NSString::alloc(nil).init_str("NSScreenNumber");
500 let screen_number = device_description.objectForKey_(screen_number_key);
501 let screen_number: NSUInteger = msg_send![screen_number, unsignedIntegerValue];
502 if screen_number as u32 == display.id().0 {
503 target_screen = screen;
504 break;
505 }
506 }
507
508 let native_window = native_window.initWithContentRect_styleMask_backing_defer_screen_(
509 NSRect::new(NSPoint::new(0., 0.), NSSize::new(1024., 768.)),
510 style_mask,
511 NSBackingStoreBuffered,
512 NO,
513 target_screen,
514 );
515 assert!(!native_window.is_null());
516 let () = msg_send![
517 native_window,
518 registerForDraggedTypes:
519 NSArray::arrayWithObject(nil, NSFilenamesPboardType)
520 ];
521
522 let native_view: id = msg_send![VIEW_CLASS, alloc];
523 let native_view = NSView::init(native_view);
524
525 assert!(!native_view.is_null());
526
527 let window = Self(Arc::new(Mutex::new(MacWindowState {
528 handle,
529 executor,
530 native_window,
531 native_view: NonNull::new_unchecked(native_view as *mut _),
532 renderer: MetalRenderer::new(true),
533 kind: options.kind,
534 request_frame_callback: None,
535 event_callback: None,
536 activate_callback: None,
537 resize_callback: None,
538 fullscreen_callback: None,
539 moved_callback: None,
540 should_close_callback: None,
541 close_callback: None,
542 appearance_changed_callback: None,
543 input_handler: None,
544 pending_key_down: None,
545 last_key_equivalent: None,
546 synthetic_drag_counter: 0,
547 last_fresh_keydown: None,
548 traffic_light_position: options
549 .titlebar
550 .as_ref()
551 .and_then(|titlebar| titlebar.traffic_light_position),
552 previous_modifiers_changed_event: None,
553 ime_state: ImeState::None,
554 ime_text: None,
555 external_files_dragged: false,
556 })));
557
558 (*native_window).set_ivar(
559 WINDOW_STATE_IVAR,
560 Arc::into_raw(window.0.clone()) as *const c_void,
561 );
562 native_window.setDelegate_(native_window);
563 (*native_view).set_ivar(
564 WINDOW_STATE_IVAR,
565 Arc::into_raw(window.0.clone()) as *const c_void,
566 );
567
568 if let Some(title) = options
569 .titlebar
570 .as_ref()
571 .and_then(|t| t.title.as_ref().map(AsRef::as_ref))
572 {
573 native_window.setTitle_(NSString::alloc(nil).init_str(title));
574 }
575
576 native_window.setMovable_(options.is_movable as BOOL);
577
578 if options
579 .titlebar
580 .map_or(true, |titlebar| titlebar.appears_transparent)
581 {
582 native_window.setTitlebarAppearsTransparent_(YES);
583 native_window.setTitleVisibility_(NSWindowTitleVisibility::NSWindowTitleHidden);
584 }
585
586 native_view.setAutoresizingMask_(NSViewWidthSizable | NSViewHeightSizable);
587 native_view.setWantsBestResolutionOpenGLSurface_(YES);
588
589 // From winit crate: On Mojave, views automatically become layer-backed shortly after
590 // being added to a native_window. Changing the layer-backedness of a view breaks the
591 // association between the view and its associated OpenGL context. To work around this,
592 // on we explicitly make the view layer-backed up front so that AppKit doesn't do it
593 // itself and break the association with its context.
594 native_view.setWantsLayer(YES);
595 let _: () = msg_send![
596 native_view,
597 setLayerContentsRedrawPolicy: NSViewLayerContentsRedrawDuringViewResize
598 ];
599
600 native_window.setContentView_(native_view.autorelease());
601 native_window.makeFirstResponder_(native_view);
602
603 if options.center {
604 native_window.center();
605 }
606
607 match options.kind {
608 WindowKind::Normal => {
609 native_window.setLevel_(NSNormalWindowLevel);
610 native_window.setAcceptsMouseMovedEvents_(YES);
611 }
612 WindowKind::PopUp => {
613 // Use a tracking area to allow receiving MouseMoved events even when
614 // the window or application aren't active, which is often the case
615 // e.g. for notification windows.
616 let tracking_area: id = msg_send![class!(NSTrackingArea), alloc];
617 let _: () = msg_send![
618 tracking_area,
619 initWithRect: NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.))
620 options: NSTrackingMouseEnteredAndExited | NSTrackingMouseMoved | NSTrackingActiveAlways | NSTrackingInVisibleRect
621 owner: native_view
622 userInfo: nil
623 ];
624 let _: () =
625 msg_send![native_view, addTrackingArea: tracking_area.autorelease()];
626
627 native_window.setLevel_(NSPopUpWindowLevel);
628 let _: () = msg_send![
629 native_window,
630 setAnimationBehavior: NSWindowAnimationBehaviorUtilityWindow
631 ];
632 native_window.setCollectionBehavior_(
633 NSWindowCollectionBehavior::NSWindowCollectionBehaviorCanJoinAllSpaces |
634 NSWindowCollectionBehavior::NSWindowCollectionBehaviorFullScreenAuxiliary
635 );
636 }
637 }
638 if options.focus {
639 native_window.makeKeyAndOrderFront_(nil);
640 } else if options.show {
641 native_window.orderFront_(nil);
642 }
643
644 let screen = native_window.screen();
645 match options.bounds {
646 WindowBounds::Fullscreen => {
647 // We need to toggle full screen asynchronously as doing so may
648 // call back into the platform handlers.
649 window.toggle_full_screen()
650 }
651 WindowBounds::Maximized => {
652 native_window.setFrame_display_(screen.visibleFrame(), YES);
653 }
654 WindowBounds::Fixed(bounds) => {
655 let display_bounds = display.bounds();
656 let frame = if bounds.intersects(&display_bounds) {
657 global_bounds_to_ns_rect(bounds)
658 } else {
659 global_bounds_to_ns_rect(display_bounds)
660 };
661 native_window.setFrame_display_(frame, YES);
662 }
663 }
664
665 window.0.lock().move_traffic_light();
666 pool.drain();
667
668 window
669 }
670 }
671
672 pub fn active_window() -> Option<AnyWindowHandle> {
673 unsafe {
674 let app = NSApplication::sharedApplication(nil);
675 let main_window: id = msg_send![app, mainWindow];
676 if msg_send![main_window, isKindOfClass: WINDOW_CLASS] {
677 let handle = get_window_state(&*main_window).lock().handle;
678 Some(handle)
679 } else {
680 None
681 }
682 }
683 }
684}
685
686impl Drop for MacWindow {
687 fn drop(&mut self) {
688 let this = self.0.lock();
689 let window = this.native_window;
690 this.executor
691 .spawn(async move {
692 unsafe {
693 window.close();
694 }
695 })
696 .detach();
697 }
698}
699
700impl PlatformWindow for MacWindow {
701 fn bounds(&self) -> WindowBounds {
702 self.0.as_ref().lock().bounds()
703 }
704
705 fn content_size(&self) -> Size<Pixels> {
706 self.0.as_ref().lock().content_size()
707 }
708
709 fn scale_factor(&self) -> f32 {
710 self.0.as_ref().lock().scale_factor()
711 }
712
713 fn titlebar_height(&self) -> Pixels {
714 self.0.as_ref().lock().titlebar_height()
715 }
716
717 fn appearance(&self) -> WindowAppearance {
718 unsafe {
719 let appearance: id = msg_send![self.0.lock().native_window, effectiveAppearance];
720 WindowAppearance::from_native(appearance)
721 }
722 }
723
724 fn display(&self) -> Rc<dyn PlatformDisplay> {
725 unsafe {
726 let screen = self.0.lock().native_window.screen();
727 let device_description: id = msg_send![screen, deviceDescription];
728 let screen_number: id = NSDictionary::valueForKey_(
729 device_description,
730 NSString::alloc(nil).init_str("NSScreenNumber"),
731 );
732
733 let screen_number: u32 = msg_send![screen_number, unsignedIntValue];
734
735 Rc::new(MacDisplay(screen_number))
736 }
737 }
738
739 fn mouse_position(&self) -> Point<Pixels> {
740 let position = unsafe {
741 self.0
742 .lock()
743 .native_window
744 .mouseLocationOutsideOfEventStream()
745 };
746 convert_mouse_position(position, self.content_size().height)
747 }
748
749 fn modifiers(&self) -> Modifiers {
750 unsafe {
751 let modifiers: NSEventModifierFlags = msg_send![class!(NSEvent), modifierFlags];
752
753 let control = modifiers.contains(NSEventModifierFlags::NSControlKeyMask);
754 let alt = modifiers.contains(NSEventModifierFlags::NSAlternateKeyMask);
755 let shift = modifiers.contains(NSEventModifierFlags::NSShiftKeyMask);
756 let command = modifiers.contains(NSEventModifierFlags::NSCommandKeyMask);
757 let function = modifiers.contains(NSEventModifierFlags::NSFunctionKeyMask);
758
759 Modifiers {
760 control,
761 alt,
762 shift,
763 command,
764 function,
765 }
766 }
767 }
768
769 fn as_any_mut(&mut self) -> &mut dyn Any {
770 self
771 }
772
773 fn set_input_handler(&mut self, input_handler: PlatformInputHandler) {
774 self.0.as_ref().lock().input_handler = Some(input_handler);
775 }
776
777 fn take_input_handler(&mut self) -> Option<PlatformInputHandler> {
778 self.0.as_ref().lock().input_handler.take()
779 }
780
781 fn prompt(
782 &self,
783 level: PromptLevel,
784 msg: &str,
785 detail: Option<&str>,
786 answers: &[&str],
787 ) -> oneshot::Receiver<usize> {
788 // macOs applies overrides to modal window buttons after they are added.
789 // Two most important for this logic are:
790 // * Buttons with "Cancel" title will be displayed as the last buttons in the modal
791 // * Last button added to the modal via `addButtonWithTitle` stays focused
792 // * Focused buttons react on "space"/" " keypresses
793 // * Usage of `keyEquivalent`, `makeFirstResponder` or `setInitialFirstResponder` does not change the focus
794 //
795 // See also https://developer.apple.com/documentation/appkit/nsalert/1524532-addbuttonwithtitle#discussion
796 // ```
797 // By default, the first button has a key equivalent of Return,
798 // any button with a title of “Cancel” has a key equivalent of Escape,
799 // 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).
800 // ```
801 //
802 // To avoid situations when the last element added is "Cancel" and it gets the focus
803 // (hence stealing both ESC and Space shortcuts), we find and add one non-Cancel button
804 // last, so it gets focus and a Space shortcut.
805 // This way, "Save this file? Yes/No/Cancel"-ish modals will get all three buttons mapped with a key.
806 let latest_non_cancel_label = answers
807 .iter()
808 .enumerate()
809 .rev()
810 .find(|(_, &label)| label != "Cancel")
811 .filter(|&(label_index, _)| label_index > 0);
812
813 unsafe {
814 let alert: id = msg_send![class!(NSAlert), alloc];
815 let alert: id = msg_send![alert, init];
816 let alert_style = match level {
817 PromptLevel::Info => 1,
818 PromptLevel::Warning => 0,
819 PromptLevel::Critical => 2,
820 };
821 let _: () = msg_send![alert, setAlertStyle: alert_style];
822 let _: () = msg_send![alert, setMessageText: ns_string(msg)];
823 if let Some(detail) = detail {
824 let _: () = msg_send![alert, setInformativeText: ns_string(detail)];
825 }
826
827 for (ix, answer) in answers
828 .iter()
829 .enumerate()
830 .filter(|&(ix, _)| Some(ix) != latest_non_cancel_label.map(|(ix, _)| ix))
831 {
832 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
833 let _: () = msg_send![button, setTag: ix as NSInteger];
834 }
835 if let Some((ix, answer)) = latest_non_cancel_label {
836 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
837 let _: () = msg_send![button, setTag: ix as NSInteger];
838 }
839
840 let (done_tx, done_rx) = oneshot::channel();
841 let done_tx = Cell::new(Some(done_tx));
842 let block = ConcreteBlock::new(move |answer: NSInteger| {
843 if let Some(done_tx) = done_tx.take() {
844 let _ = done_tx.send(answer.try_into().unwrap());
845 }
846 });
847 let block = block.copy();
848 let native_window = self.0.lock().native_window;
849 let executor = self.0.lock().executor.clone();
850 executor
851 .spawn(async move {
852 let _: () = msg_send![
853 alert,
854 beginSheetModalForWindow: native_window
855 completionHandler: block
856 ];
857 })
858 .detach();
859
860 done_rx
861 }
862 }
863
864 fn activate(&self) {
865 let window = self.0.lock().native_window;
866 let executor = self.0.lock().executor.clone();
867 executor
868 .spawn(async move {
869 unsafe {
870 let _: () = msg_send![window, makeKeyAndOrderFront: nil];
871 }
872 })
873 .detach();
874 }
875
876 fn set_title(&mut self, title: &str) {
877 unsafe {
878 let app = NSApplication::sharedApplication(nil);
879 let window = self.0.lock().native_window;
880 let title = ns_string(title);
881 let _: () = msg_send![app, changeWindowsItem:window title:title filename:false];
882 let _: () = msg_send![window, setTitle: title];
883 self.0.lock().move_traffic_light();
884 }
885 }
886
887 fn set_edited(&mut self, edited: bool) {
888 unsafe {
889 let window = self.0.lock().native_window;
890 msg_send![window, setDocumentEdited: edited as BOOL]
891 }
892
893 // Changing the document edited state resets the traffic light position,
894 // so we have to move it again.
895 self.0.lock().move_traffic_light();
896 }
897
898 fn show_character_palette(&self) {
899 let this = self.0.lock();
900 let window = this.native_window;
901 this.executor
902 .spawn(async move {
903 unsafe {
904 let app = NSApplication::sharedApplication(nil);
905 let _: () = msg_send![app, orderFrontCharacterPalette: window];
906 }
907 })
908 .detach();
909 }
910
911 fn minimize(&self) {
912 let window = self.0.lock().native_window;
913 unsafe {
914 window.miniaturize_(nil);
915 }
916 }
917
918 fn zoom(&self) {
919 let this = self.0.lock();
920 let window = this.native_window;
921 this.executor
922 .spawn(async move {
923 unsafe {
924 window.zoom_(nil);
925 }
926 })
927 .detach();
928 }
929
930 fn toggle_full_screen(&self) {
931 let this = self.0.lock();
932 let window = this.native_window;
933 this.executor
934 .spawn(async move {
935 unsafe {
936 window.toggleFullScreen_(nil);
937 }
938 })
939 .detach();
940 }
941
942 fn on_request_frame(&self, callback: Box<dyn FnMut()>) {
943 self.0.as_ref().lock().request_frame_callback = Some(callback);
944 }
945
946 fn on_input(&self, callback: Box<dyn FnMut(PlatformInput) -> bool>) {
947 self.0.as_ref().lock().event_callback = Some(callback);
948 }
949
950 fn on_active_status_change(&self, callback: Box<dyn FnMut(bool)>) {
951 self.0.as_ref().lock().activate_callback = Some(callback);
952 }
953
954 fn on_resize(&self, callback: Box<dyn FnMut(Size<Pixels>, f32)>) {
955 self.0.as_ref().lock().resize_callback = Some(callback);
956 }
957
958 fn on_fullscreen(&self, callback: Box<dyn FnMut(bool)>) {
959 self.0.as_ref().lock().fullscreen_callback = Some(callback);
960 }
961
962 fn on_moved(&self, callback: Box<dyn FnMut()>) {
963 self.0.as_ref().lock().moved_callback = Some(callback);
964 }
965
966 fn on_should_close(&self, callback: Box<dyn FnMut() -> bool>) {
967 self.0.as_ref().lock().should_close_callback = Some(callback);
968 }
969
970 fn on_close(&self, callback: Box<dyn FnOnce()>) {
971 self.0.as_ref().lock().close_callback = Some(callback);
972 }
973
974 fn on_appearance_changed(&self, callback: Box<dyn FnMut()>) {
975 self.0.lock().appearance_changed_callback = Some(callback);
976 }
977
978 fn is_topmost_for_position(&self, position: Point<Pixels>) -> bool {
979 let self_borrow = self.0.lock();
980 let self_handle = self_borrow.handle;
981
982 unsafe {
983 let app = NSApplication::sharedApplication(nil);
984
985 // Convert back to screen coordinates
986 let screen_point = self_borrow.to_screen_ns_point(position);
987
988 let window_number: NSInteger = msg_send![class!(NSWindow), windowNumberAtPoint:screen_point belowWindowWithWindowNumber:0];
989 let top_most_window: id = msg_send![app, windowWithWindowNumber: window_number];
990
991 let is_panel: BOOL = msg_send![top_most_window, isKindOfClass: PANEL_CLASS];
992 let is_window: BOOL = msg_send![top_most_window, isKindOfClass: WINDOW_CLASS];
993 if is_panel == YES || is_window == YES {
994 let topmost_window = get_window_state(&*top_most_window).lock().handle;
995 topmost_window == self_handle
996 } else {
997 // Someone else's window is on top
998 false
999 }
1000 }
1001 }
1002
1003 fn invalidate(&self) {
1004 let this = self.0.lock();
1005 unsafe {
1006 let _: () = msg_send![this.native_window.contentView(), setNeedsDisplay: YES];
1007 }
1008 }
1009
1010 fn draw(&self, scene: &crate::Scene) {
1011 let mut this = self.0.lock();
1012 this.renderer.draw(scene);
1013 }
1014
1015 fn sprite_atlas(&self) -> Arc<dyn PlatformAtlas> {
1016 self.0.lock().renderer.sprite_atlas().clone()
1017 }
1018}
1019
1020impl HasWindowHandle for MacWindow {
1021 fn window_handle(
1022 &self,
1023 ) -> Result<raw_window_handle::WindowHandle<'_>, raw_window_handle::HandleError> {
1024 // SAFETY: The AppKitWindowHandle is a wrapper around a pointer to an NSView
1025 unsafe {
1026 Ok(WindowHandle::borrow_raw(RawWindowHandle::AppKit(
1027 AppKitWindowHandle::new(self.0.lock().native_view.cast()),
1028 )))
1029 }
1030 }
1031}
1032
1033impl HasDisplayHandle for MacWindow {
1034 fn display_handle(
1035 &self,
1036 ) -> Result<raw_window_handle::DisplayHandle<'_>, raw_window_handle::HandleError> {
1037 // SAFETY: This is a no-op on macOS
1038 unsafe { Ok(DisplayHandle::borrow_raw(AppKitDisplayHandle::new().into())) }
1039 }
1040}
1041
1042fn get_scale_factor(native_window: id) -> f32 {
1043 let factor = unsafe {
1044 let screen: id = msg_send![native_window, screen];
1045 NSScreen::backingScaleFactor(screen) as f32
1046 };
1047
1048 // We are not certain what triggers this, but it seems that sometimes
1049 // this method would return 0 (https://github.com/zed-industries/zed/issues/6412)
1050 // It seems most likely that this would happen if the window has no screen
1051 // (if it is off-screen), though we'd expect to see viewDidChangeBackingProperties before
1052 // it was rendered for real.
1053 // Regardless, attempt to avoid the issue here.
1054 if factor == 0.0 {
1055 2.
1056 } else {
1057 factor
1058 }
1059}
1060
1061unsafe fn get_window_state(object: &Object) -> Arc<Mutex<MacWindowState>> {
1062 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1063 let rc1 = Arc::from_raw(raw as *mut Mutex<MacWindowState>);
1064 let rc2 = rc1.clone();
1065 mem::forget(rc1);
1066 rc2
1067}
1068
1069unsafe fn drop_window_state(object: &Object) {
1070 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1071 Rc::from_raw(raw as *mut RefCell<MacWindowState>);
1072}
1073
1074extern "C" fn yes(_: &Object, _: Sel) -> BOOL {
1075 YES
1076}
1077
1078extern "C" fn dealloc_window(this: &Object, _: Sel) {
1079 unsafe {
1080 drop_window_state(this);
1081 let _: () = msg_send![super(this, class!(NSWindow)), dealloc];
1082 }
1083}
1084
1085extern "C" fn dealloc_view(this: &Object, _: Sel) {
1086 unsafe {
1087 drop_window_state(this);
1088 let _: () = msg_send![super(this, class!(NSView)), dealloc];
1089 }
1090}
1091
1092extern "C" fn handle_key_equivalent(this: &Object, _: Sel, native_event: id) -> BOOL {
1093 handle_key_event(this, native_event, true)
1094}
1095
1096extern "C" fn handle_key_down(this: &Object, _: Sel, native_event: id) {
1097 handle_key_event(this, native_event, false);
1098}
1099
1100extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent: bool) -> BOOL {
1101 let window_state = unsafe { get_window_state(this) };
1102 let mut lock = window_state.as_ref().lock();
1103
1104 let window_height = lock.content_size().height;
1105 let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) };
1106
1107 if let Some(PlatformInput::KeyDown(event)) = event {
1108 // For certain keystrokes, macOS will first dispatch a "key equivalent" event.
1109 // If that event isn't handled, it will then dispatch a "key down" event. GPUI
1110 // makes no distinction between these two types of events, so we need to ignore
1111 // the "key down" event if we've already just processed its "key equivalent" version.
1112 if key_equivalent {
1113 lock.last_key_equivalent = Some(event.clone());
1114 } else if lock.last_key_equivalent.take().as_ref() == Some(&event) {
1115 return NO;
1116 }
1117
1118 let keydown = event.keystroke.clone();
1119 let fn_modifier = keydown.modifiers.function;
1120 // Ignore events from held-down keys after some of the initially-pressed keys
1121 // were released.
1122 if event.is_held {
1123 if lock.last_fresh_keydown.as_ref() != Some(&keydown) {
1124 return YES;
1125 }
1126 } else {
1127 lock.last_fresh_keydown = Some(keydown);
1128 }
1129 lock.pending_key_down = Some((event, None));
1130 drop(lock);
1131
1132 // Send the event to the input context for IME handling, unless the `fn` modifier is
1133 // being pressed.
1134 if !fn_modifier {
1135 unsafe {
1136 let input_context: id = msg_send![this, inputContext];
1137 let _: BOOL = msg_send![input_context, handleEvent: native_event];
1138 }
1139 }
1140
1141 let mut handled = false;
1142 let mut lock = window_state.lock();
1143 let ime_text = lock.ime_text.clone();
1144 if let Some((event, insert_text)) = lock.pending_key_down.take() {
1145 let is_held = event.is_held;
1146 if let Some(mut callback) = lock.event_callback.take() {
1147 drop(lock);
1148
1149 let is_composing =
1150 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1151 .flatten()
1152 .is_some();
1153 if !is_composing {
1154 handled = callback(PlatformInput::KeyDown(event));
1155 }
1156
1157 if !handled {
1158 if let Some(insert) = insert_text {
1159 handled = true;
1160 with_input_handler(this, |input_handler| {
1161 input_handler
1162 .replace_text_in_range(insert.replacement_range, &insert.text)
1163 });
1164 } else if !is_composing && is_held {
1165 if let Some(last_insert_text) = ime_text {
1166 //MacOS IME is a bit funky, and even when you've told it there's nothing to
1167 //inter it will still swallow certain keys (e.g. 'f', 'j') and not others
1168 //(e.g. 'n'). This is a problem for certain kinds of views, like the terminal
1169 with_input_handler(this, |input_handler| {
1170 if input_handler.selected_text_range().is_none() {
1171 handled = true;
1172 input_handler.replace_text_in_range(None, &last_insert_text)
1173 }
1174 });
1175 }
1176 }
1177 }
1178
1179 window_state.lock().event_callback = Some(callback);
1180 }
1181 } else {
1182 handled = true;
1183 }
1184
1185 handled as BOOL
1186 } else {
1187 NO
1188 }
1189}
1190
1191extern "C" fn handle_view_event(this: &Object, _: Sel, native_event: id) {
1192 let window_state = unsafe { get_window_state(this) };
1193 let weak_window_state = Arc::downgrade(&window_state);
1194 let mut lock = window_state.as_ref().lock();
1195 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1196
1197 let window_height = lock.content_size().height;
1198 let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) };
1199
1200 if let Some(mut event) = event {
1201 match &mut event {
1202 PlatformInput::MouseDown(
1203 event @ MouseDownEvent {
1204 button: MouseButton::Left,
1205 modifiers: Modifiers { control: true, .. },
1206 ..
1207 },
1208 ) => {
1209 // On mac, a ctrl-left click should be handled as a right click.
1210 *event = MouseDownEvent {
1211 button: MouseButton::Right,
1212 modifiers: Modifiers {
1213 control: false,
1214 ..event.modifiers
1215 },
1216 click_count: 1,
1217 ..*event
1218 };
1219 }
1220
1221 // Because we map a ctrl-left_down to a right_down -> right_up let's ignore
1222 // the ctrl-left_up to avoid having a mismatch in button down/up events if the
1223 // user is still holding ctrl when releasing the left mouse button
1224 PlatformInput::MouseUp(
1225 event @ MouseUpEvent {
1226 button: MouseButton::Left,
1227 modifiers: Modifiers { control: true, .. },
1228 ..
1229 },
1230 ) => {
1231 *event = MouseUpEvent {
1232 button: MouseButton::Right,
1233 modifiers: Modifiers {
1234 control: false,
1235 ..event.modifiers
1236 },
1237 click_count: 1,
1238 ..*event
1239 };
1240 }
1241
1242 _ => {}
1243 };
1244
1245 match &event {
1246 PlatformInput::MouseMove(
1247 event @ MouseMoveEvent {
1248 pressed_button: Some(_),
1249 ..
1250 },
1251 ) => {
1252 // Synthetic drag is used for selecting long buffer contents while buffer is being scrolled.
1253 // External file drag and drop is able to emit its own synthetic mouse events which will conflict
1254 // with these ones.
1255 if !lock.external_files_dragged {
1256 lock.synthetic_drag_counter += 1;
1257 let executor = lock.executor.clone();
1258 executor
1259 .spawn(synthetic_drag(
1260 weak_window_state,
1261 lock.synthetic_drag_counter,
1262 event.clone(),
1263 ))
1264 .detach();
1265 }
1266 }
1267
1268 PlatformInput::MouseMove(_) if !(is_active || lock.kind == WindowKind::PopUp) => return,
1269
1270 PlatformInput::MouseUp(MouseUpEvent { .. }) => {
1271 lock.synthetic_drag_counter += 1;
1272 }
1273
1274 PlatformInput::ModifiersChanged(ModifiersChangedEvent { modifiers }) => {
1275 // Only raise modifiers changed event when they have actually changed
1276 if let Some(PlatformInput::ModifiersChanged(ModifiersChangedEvent {
1277 modifiers: prev_modifiers,
1278 })) = &lock.previous_modifiers_changed_event
1279 {
1280 if prev_modifiers == modifiers {
1281 return;
1282 }
1283 }
1284
1285 lock.previous_modifiers_changed_event = Some(event.clone());
1286 }
1287
1288 _ => {}
1289 }
1290
1291 if let Some(mut callback) = lock.event_callback.take() {
1292 drop(lock);
1293 callback(event);
1294 window_state.lock().event_callback = Some(callback);
1295 }
1296 }
1297}
1298
1299// Allows us to receive `cmd-.` (the shortcut for closing a dialog)
1300// https://bugs.eclipse.org/bugs/show_bug.cgi?id=300620#c6
1301extern "C" fn cancel_operation(this: &Object, _sel: Sel, _sender: id) {
1302 let window_state = unsafe { get_window_state(this) };
1303 let mut lock = window_state.as_ref().lock();
1304
1305 let keystroke = Keystroke {
1306 modifiers: Default::default(),
1307 key: ".".into(),
1308 ime_key: None,
1309 };
1310 let event = PlatformInput::KeyDown(KeyDownEvent {
1311 keystroke: keystroke.clone(),
1312 is_held: false,
1313 });
1314
1315 lock.last_fresh_keydown = Some(keystroke);
1316 if let Some(mut callback) = lock.event_callback.take() {
1317 drop(lock);
1318 callback(event);
1319 window_state.lock().event_callback = Some(callback);
1320 }
1321}
1322
1323extern "C" fn window_did_resize(this: &Object, _: Sel, _: id) {
1324 let window_state = unsafe { get_window_state(this) };
1325 window_state.as_ref().lock().move_traffic_light();
1326}
1327
1328extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) {
1329 window_fullscreen_changed(this, true);
1330}
1331
1332extern "C" fn window_will_exit_fullscreen(this: &Object, _: Sel, _: id) {
1333 window_fullscreen_changed(this, false);
1334}
1335
1336fn window_fullscreen_changed(this: &Object, is_fullscreen: bool) {
1337 let window_state = unsafe { get_window_state(this) };
1338 let mut lock = window_state.as_ref().lock();
1339 if let Some(mut callback) = lock.fullscreen_callback.take() {
1340 drop(lock);
1341 callback(is_fullscreen);
1342 window_state.lock().fullscreen_callback = Some(callback);
1343 }
1344}
1345
1346extern "C" fn window_did_move(this: &Object, _: Sel, _: id) {
1347 let window_state = unsafe { get_window_state(this) };
1348 let mut lock = window_state.as_ref().lock();
1349 if let Some(mut callback) = lock.moved_callback.take() {
1350 drop(lock);
1351 callback();
1352 window_state.lock().moved_callback = Some(callback);
1353 }
1354}
1355
1356extern "C" fn window_did_change_key_status(this: &Object, selector: Sel, _: id) {
1357 let window_state = unsafe { get_window_state(this) };
1358 let lock = window_state.lock();
1359 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1360
1361 // When opening a pop-up while the application isn't active, Cocoa sends a spurious
1362 // `windowDidBecomeKey` message to the previous key window even though that window
1363 // isn't actually key. This causes a bug if the application is later activated while
1364 // the pop-up is still open, making it impossible to activate the previous key window
1365 // even if the pop-up gets closed. The only way to activate it again is to de-activate
1366 // the app and re-activate it, which is a pretty bad UX.
1367 // The following code detects the spurious event and invokes `resignKeyWindow`:
1368 // in theory, we're not supposed to invoke this method manually but it balances out
1369 // the spurious `becomeKeyWindow` event and helps us work around that bug.
1370 if selector == sel!(windowDidBecomeKey:) && !is_active {
1371 unsafe {
1372 let _: () = msg_send![lock.native_window, resignKeyWindow];
1373 return;
1374 }
1375 }
1376
1377 let executor = lock.executor.clone();
1378 drop(lock);
1379 executor
1380 .spawn(async move {
1381 let mut lock = window_state.as_ref().lock();
1382 if let Some(mut callback) = lock.activate_callback.take() {
1383 drop(lock);
1384 callback(is_active);
1385 window_state.lock().activate_callback = Some(callback);
1386 };
1387 })
1388 .detach();
1389}
1390
1391extern "C" fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
1392 let window_state = unsafe { get_window_state(this) };
1393 let mut lock = window_state.as_ref().lock();
1394 if let Some(mut callback) = lock.should_close_callback.take() {
1395 drop(lock);
1396 let should_close = callback();
1397 window_state.lock().should_close_callback = Some(callback);
1398 should_close as BOOL
1399 } else {
1400 YES
1401 }
1402}
1403
1404extern "C" fn close_window(this: &Object, _: Sel) {
1405 unsafe {
1406 let close_callback = {
1407 let window_state = get_window_state(this);
1408 window_state
1409 .as_ref()
1410 .try_lock()
1411 .and_then(|mut window_state| window_state.close_callback.take())
1412 };
1413
1414 if let Some(callback) = close_callback {
1415 callback();
1416 }
1417
1418 let _: () = msg_send![super(this, class!(NSWindow)), close];
1419 }
1420}
1421
1422extern "C" fn make_backing_layer(this: &Object, _: Sel) -> id {
1423 let window_state = unsafe { get_window_state(this) };
1424 let window_state = window_state.as_ref().lock();
1425 window_state.renderer.layer().as_ptr() as id
1426}
1427
1428extern "C" fn view_did_change_backing_properties(this: &Object, _: Sel) {
1429 let window_state = unsafe { get_window_state(this) };
1430 let mut lock = window_state.as_ref().lock();
1431
1432 unsafe {
1433 let scale_factor = lock.scale_factor() as f64;
1434 let size = lock.content_size();
1435 let drawable_size: NSSize = NSSize {
1436 width: f64::from(size.width) * scale_factor,
1437 height: f64::from(size.height) * scale_factor,
1438 };
1439
1440 let _: () = msg_send![
1441 lock.renderer.layer(),
1442 setContentsScale: scale_factor
1443 ];
1444 let _: () = msg_send![
1445 lock.renderer.layer(),
1446 setDrawableSize: drawable_size
1447 ];
1448 }
1449
1450 if let Some(mut callback) = lock.resize_callback.take() {
1451 let content_size = lock.content_size();
1452 let scale_factor = lock.scale_factor();
1453 drop(lock);
1454 callback(content_size, scale_factor);
1455 window_state.as_ref().lock().resize_callback = Some(callback);
1456 };
1457}
1458
1459extern "C" fn set_frame_size(this: &Object, _: Sel, size: NSSize) {
1460 let window_state = unsafe { get_window_state(this) };
1461 let lock = window_state.as_ref().lock();
1462
1463 if lock.content_size() == size.into() {
1464 return;
1465 }
1466
1467 unsafe {
1468 let _: () = msg_send![super(this, class!(NSView)), setFrameSize: size];
1469 }
1470
1471 let scale_factor = lock.scale_factor() as f64;
1472 let drawable_size: NSSize = NSSize {
1473 width: size.width * scale_factor,
1474 height: size.height * scale_factor,
1475 };
1476
1477 unsafe {
1478 let _: () = msg_send![
1479 lock.renderer.layer(),
1480 setDrawableSize: drawable_size
1481 ];
1482 }
1483
1484 drop(lock);
1485 let mut lock = window_state.lock();
1486 if let Some(mut callback) = lock.resize_callback.take() {
1487 let content_size = lock.content_size();
1488 let scale_factor = lock.scale_factor();
1489 drop(lock);
1490 callback(content_size, scale_factor);
1491 window_state.lock().resize_callback = Some(callback);
1492 };
1493}
1494
1495extern "C" fn display_layer(this: &Object, _: Sel, _: id) {
1496 let window_state = unsafe { get_window_state(this) };
1497 let mut lock = window_state.lock();
1498 if let Some(mut callback) = lock.request_frame_callback.take() {
1499 drop(lock);
1500 callback();
1501 window_state.lock().request_frame_callback = Some(callback);
1502 }
1503}
1504
1505extern "C" fn valid_attributes_for_marked_text(_: &Object, _: Sel) -> id {
1506 unsafe { msg_send![class!(NSArray), array] }
1507}
1508
1509extern "C" fn has_marked_text(this: &Object, _: Sel) -> BOOL {
1510 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1511 .flatten()
1512 .is_some() as BOOL
1513}
1514
1515extern "C" fn marked_range(this: &Object, _: Sel) -> NSRange {
1516 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1517 .flatten()
1518 .map_or(NSRange::invalid(), |range| range.into())
1519}
1520
1521extern "C" fn selected_range(this: &Object, _: Sel) -> NSRange {
1522 with_input_handler(this, |input_handler| input_handler.selected_text_range())
1523 .flatten()
1524 .map_or(NSRange::invalid(), |range| range.into())
1525}
1526
1527extern "C" fn first_rect_for_character_range(
1528 this: &Object,
1529 _: Sel,
1530 range: NSRange,
1531 _: id,
1532) -> NSRect {
1533 let frame = unsafe {
1534 let window = get_window_state(this).lock().native_window;
1535 NSView::frame(window)
1536 };
1537 with_input_handler(this, |input_handler| {
1538 input_handler.bounds_for_range(range.to_range()?)
1539 })
1540 .flatten()
1541 .map_or(
1542 NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)),
1543 |bounds| {
1544 NSRect::new(
1545 NSPoint::new(
1546 frame.origin.x + bounds.origin.x.0 as f64,
1547 frame.origin.y + frame.size.height
1548 - bounds.origin.y.0 as f64
1549 - bounds.size.height.0 as f64,
1550 ),
1551 NSSize::new(bounds.size.width.0 as f64, bounds.size.height.0 as f64),
1552 )
1553 },
1554 )
1555}
1556
1557extern "C" fn insert_text(this: &Object, _: Sel, text: id, replacement_range: NSRange) {
1558 unsafe {
1559 let window_state = get_window_state(this);
1560 let mut lock = window_state.lock();
1561 let pending_key_down = lock.pending_key_down.take();
1562 drop(lock);
1563
1564 let is_attributed_string: BOOL =
1565 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1566 let text: id = if is_attributed_string == YES {
1567 msg_send![text, string]
1568 } else {
1569 text
1570 };
1571 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1572 .to_str()
1573 .unwrap();
1574 let replacement_range = replacement_range.to_range();
1575
1576 window_state.lock().ime_text = Some(text.to_string());
1577 window_state.lock().ime_state = ImeState::Acted;
1578
1579 let is_composing =
1580 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1581 .flatten()
1582 .is_some();
1583
1584 if is_composing || text.chars().count() > 1 || pending_key_down.is_none() {
1585 with_input_handler(this, |input_handler| {
1586 input_handler.replace_text_in_range(replacement_range, text)
1587 });
1588 } else {
1589 let mut pending_key_down = pending_key_down.unwrap();
1590 pending_key_down.1 = Some(InsertText {
1591 replacement_range,
1592 text: text.to_string(),
1593 });
1594 pending_key_down.0.keystroke.ime_key = Some(text.to_string());
1595 window_state.lock().pending_key_down = Some(pending_key_down);
1596 }
1597 }
1598}
1599
1600extern "C" fn set_marked_text(
1601 this: &Object,
1602 _: Sel,
1603 text: id,
1604 selected_range: NSRange,
1605 replacement_range: NSRange,
1606) {
1607 unsafe {
1608 let window_state = get_window_state(this);
1609 window_state.lock().pending_key_down.take();
1610
1611 let is_attributed_string: BOOL =
1612 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1613 let text: id = if is_attributed_string == YES {
1614 msg_send![text, string]
1615 } else {
1616 text
1617 };
1618 let selected_range = selected_range.to_range();
1619 let replacement_range = replacement_range.to_range();
1620 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1621 .to_str()
1622 .unwrap();
1623
1624 window_state.lock().ime_state = ImeState::Acted;
1625 window_state.lock().ime_text = Some(text.to_string());
1626
1627 with_input_handler(this, |input_handler| {
1628 input_handler.replace_and_mark_text_in_range(replacement_range, text, selected_range);
1629 });
1630 }
1631}
1632
1633extern "C" fn unmark_text(this: &Object, _: Sel) {
1634 unsafe {
1635 let state = get_window_state(this);
1636 let mut borrow = state.lock();
1637 borrow.ime_state = ImeState::Acted;
1638 borrow.ime_text.take();
1639 }
1640
1641 with_input_handler(this, |input_handler| input_handler.unmark_text());
1642}
1643
1644extern "C" fn attributed_substring_for_proposed_range(
1645 this: &Object,
1646 _: Sel,
1647 range: NSRange,
1648 _actual_range: *mut c_void,
1649) -> id {
1650 with_input_handler(this, |input_handler| {
1651 let range = range.to_range()?;
1652 if range.is_empty() {
1653 return None;
1654 }
1655
1656 let selected_text = input_handler.text_for_range(range)?;
1657 unsafe {
1658 let string: id = msg_send![class!(NSAttributedString), alloc];
1659 let string: id = msg_send![string, initWithString: ns_string(&selected_text)];
1660 Some(string)
1661 }
1662 })
1663 .flatten()
1664 .unwrap_or(nil)
1665}
1666
1667extern "C" fn do_command_by_selector(this: &Object, _: Sel, _: Sel) {
1668 unsafe {
1669 let state = get_window_state(this);
1670 let mut borrow = state.lock();
1671 borrow.ime_state = ImeState::Continue;
1672 borrow.ime_text.take();
1673 }
1674}
1675
1676extern "C" fn view_did_change_effective_appearance(this: &Object, _: Sel) {
1677 unsafe {
1678 let state = get_window_state(this);
1679 let mut lock = state.as_ref().lock();
1680 if let Some(mut callback) = lock.appearance_changed_callback.take() {
1681 drop(lock);
1682 callback();
1683 state.lock().appearance_changed_callback = Some(callback);
1684 }
1685 }
1686}
1687
1688extern "C" fn accepts_first_mouse(this: &Object, _: Sel, _: id) -> BOOL {
1689 unsafe {
1690 let state = get_window_state(this);
1691 let lock = state.as_ref().lock();
1692 if lock.kind == WindowKind::PopUp {
1693 YES
1694 } else {
1695 NO
1696 }
1697 }
1698}
1699
1700extern "C" fn dragging_entered(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1701 let window_state = unsafe { get_window_state(this) };
1702 if send_new_event(&window_state, {
1703 let position = drag_event_position(&window_state, dragging_info);
1704 let paths = external_paths_from_event(dragging_info);
1705 PlatformInput::FileDrop(FileDropEvent::Entered { position, paths })
1706 }) {
1707 window_state.lock().external_files_dragged = true;
1708 NSDragOperationCopy
1709 } else {
1710 NSDragOperationNone
1711 }
1712}
1713
1714extern "C" fn dragging_updated(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1715 let window_state = unsafe { get_window_state(this) };
1716 let position = drag_event_position(&window_state, dragging_info);
1717 if send_new_event(
1718 &window_state,
1719 PlatformInput::FileDrop(FileDropEvent::Pending { position }),
1720 ) {
1721 NSDragOperationCopy
1722 } else {
1723 NSDragOperationNone
1724 }
1725}
1726
1727extern "C" fn dragging_exited(this: &Object, _: Sel, _: id) {
1728 let window_state = unsafe { get_window_state(this) };
1729 send_new_event(
1730 &window_state,
1731 PlatformInput::FileDrop(FileDropEvent::Exited),
1732 );
1733 window_state.lock().external_files_dragged = false;
1734}
1735
1736extern "C" fn perform_drag_operation(this: &Object, _: Sel, dragging_info: id) -> BOOL {
1737 let window_state = unsafe { get_window_state(this) };
1738 let position = drag_event_position(&window_state, dragging_info);
1739 if send_new_event(
1740 &window_state,
1741 PlatformInput::FileDrop(FileDropEvent::Submit { position }),
1742 ) {
1743 YES
1744 } else {
1745 NO
1746 }
1747}
1748
1749fn external_paths_from_event(dragging_info: *mut Object) -> ExternalPaths {
1750 let mut paths = SmallVec::new();
1751 let pasteboard: id = unsafe { msg_send![dragging_info, draggingPasteboard] };
1752 let filenames = unsafe { NSPasteboard::propertyListForType(pasteboard, NSFilenamesPboardType) };
1753 for file in unsafe { filenames.iter() } {
1754 let path = unsafe {
1755 let f = NSString::UTF8String(file);
1756 CStr::from_ptr(f).to_string_lossy().into_owned()
1757 };
1758 paths.push(PathBuf::from(path))
1759 }
1760 ExternalPaths(paths)
1761}
1762
1763extern "C" fn conclude_drag_operation(this: &Object, _: Sel, _: id) {
1764 let window_state = unsafe { get_window_state(this) };
1765 send_new_event(
1766 &window_state,
1767 PlatformInput::FileDrop(FileDropEvent::Exited),
1768 );
1769}
1770
1771async fn synthetic_drag(
1772 window_state: Weak<Mutex<MacWindowState>>,
1773 drag_id: usize,
1774 event: MouseMoveEvent,
1775) {
1776 loop {
1777 Timer::after(Duration::from_millis(16)).await;
1778 if let Some(window_state) = window_state.upgrade() {
1779 let mut lock = window_state.lock();
1780 if lock.synthetic_drag_counter == drag_id {
1781 if let Some(mut callback) = lock.event_callback.take() {
1782 drop(lock);
1783 callback(PlatformInput::MouseMove(event.clone()));
1784 window_state.lock().event_callback = Some(callback);
1785 }
1786 } else {
1787 break;
1788 }
1789 }
1790 }
1791}
1792
1793fn send_new_event(window_state_lock: &Mutex<MacWindowState>, e: PlatformInput) -> bool {
1794 let window_state = window_state_lock.lock().event_callback.take();
1795 if let Some(mut callback) = window_state {
1796 callback(e);
1797 window_state_lock.lock().event_callback = Some(callback);
1798 true
1799 } else {
1800 false
1801 }
1802}
1803
1804fn drag_event_position(window_state: &Mutex<MacWindowState>, dragging_info: id) -> Point<Pixels> {
1805 let drag_location: NSPoint = unsafe { msg_send![dragging_info, draggingLocation] };
1806 convert_mouse_position(drag_location, window_state.lock().content_size().height)
1807}
1808
1809fn with_input_handler<F, R>(window: &Object, f: F) -> Option<R>
1810where
1811 F: FnOnce(&mut PlatformInputHandler) -> R,
1812{
1813 let window_state = unsafe { get_window_state(window) };
1814 let mut lock = window_state.as_ref().lock();
1815 if let Some(mut input_handler) = lock.input_handler.take() {
1816 drop(lock);
1817 let result = f(&mut input_handler);
1818 window_state.lock().input_handler = Some(input_handler);
1819 Some(result)
1820 } else {
1821 None
1822 }
1823}