1use super::{display_bounds_from_native, ns_string, MacDisplay, MetalRenderer, NSRange};
2use crate::{
3 display_bounds_to_native, point, px, size, AnyWindowHandle, Bounds, DrawWindow, ExternalPaths,
4 FileDropEvent, ForegroundExecutor, GlobalPixels, InputEvent, KeyDownEvent, Keystroke,
5 Modifiers, ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent,
6 Pixels, PlatformAtlas, PlatformDisplay, PlatformInputHandler, 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 smallvec::SmallVec;
36use std::{
37 any::Any,
38 cell::{Cell, RefCell},
39 ffi::{c_void, CStr},
40 mem,
41 ops::Range,
42 os::raw::c_char,
43 path::PathBuf,
44 ptr,
45 rc::Rc,
46 sync::{Arc, Weak},
47 time::Duration,
48};
49use util::ResultExt;
50
51const WINDOW_STATE_IVAR: &str = "windowState";
52
53static mut WINDOW_CLASS: *const Class = ptr::null();
54static mut PANEL_CLASS: *const Class = ptr::null();
55static mut VIEW_CLASS: *const Class = ptr::null();
56
57#[allow(non_upper_case_globals)]
58const NSWindowStyleMaskNonactivatingPanel: NSWindowStyleMask =
59 unsafe { NSWindowStyleMask::from_bits_unchecked(1 << 7) };
60#[allow(non_upper_case_globals)]
61const NSNormalWindowLevel: NSInteger = 0;
62#[allow(non_upper_case_globals)]
63const NSPopUpWindowLevel: NSInteger = 101;
64#[allow(non_upper_case_globals)]
65const NSTrackingMouseEnteredAndExited: NSUInteger = 0x01;
66#[allow(non_upper_case_globals)]
67const NSTrackingMouseMoved: NSUInteger = 0x02;
68#[allow(non_upper_case_globals)]
69const NSTrackingActiveAlways: NSUInteger = 0x80;
70#[allow(non_upper_case_globals)]
71const NSTrackingInVisibleRect: NSUInteger = 0x200;
72#[allow(non_upper_case_globals)]
73const NSWindowAnimationBehaviorUtilityWindow: NSInteger = 4;
74#[allow(non_upper_case_globals)]
75const NSViewLayerContentsRedrawDuringViewResize: NSInteger = 2;
76// https://developer.apple.com/documentation/appkit/nsdragoperation
77#[allow(non_upper_case_globals)]
78type NSDragOperation = NSUInteger;
79#[allow(non_upper_case_globals)]
80const NSDragOperationNone: NSDragOperation = 0;
81#[allow(non_upper_case_globals)]
82const NSDragOperationCopy: NSDragOperation = 1;
83
84#[ctor]
85unsafe fn build_classes() {
86 ::util::gpui2_loaded();
87
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 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 decl.add_method(sel!(close), close_window as extern "C" fn(&Object, Sel));
276
277 decl.add_method(
278 sel!(draggingEntered:),
279 dragging_entered as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
280 );
281 decl.add_method(
282 sel!(draggingUpdated:),
283 dragging_updated as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
284 );
285 decl.add_method(
286 sel!(draggingExited:),
287 dragging_exited as extern "C" fn(&Object, Sel, id),
288 );
289 decl.add_method(
290 sel!(performDragOperation:),
291 perform_drag_operation as extern "C" fn(&Object, Sel, id) -> BOOL,
292 );
293 decl.add_method(
294 sel!(concludeDragOperation:),
295 conclude_drag_operation as extern "C" fn(&Object, Sel, id),
296 );
297
298 decl.register()
299}
300
301///Used to track what the IME does when we send it a keystroke.
302///This is only used to handle the case where the IME mysteriously
303///swallows certain keys.
304///
305///Basically a direct copy of the approach that WezTerm uses in:
306///github.com/wez/wezterm : d5755f3e : window/src/os/macos/window.rs
307enum ImeState {
308 Continue,
309 Acted,
310 None,
311}
312
313struct InsertText {
314 replacement_range: Option<Range<usize>>,
315 text: String,
316}
317
318struct MacWindowState {
319 handle: AnyWindowHandle,
320 executor: ForegroundExecutor,
321 native_window: id,
322 renderer: MetalRenderer,
323 draw: Option<DrawWindow>,
324 kind: WindowKind,
325 event_callback: Option<Box<dyn FnMut(InputEvent) -> bool>>,
326 activate_callback: Option<Box<dyn FnMut(bool)>>,
327 resize_callback: Option<Box<dyn FnMut(Size<Pixels>, f32)>>,
328 fullscreen_callback: Option<Box<dyn FnMut(bool)>>,
329 moved_callback: Option<Box<dyn FnMut()>>,
330 should_close_callback: Option<Box<dyn FnMut() -> bool>>,
331 close_callback: Option<Box<dyn FnOnce()>>,
332 appearance_changed_callback: Option<Box<dyn FnMut()>>,
333 input_handler: Option<Box<dyn PlatformInputHandler>>,
334 pending_key_down: Option<(KeyDownEvent, Option<InsertText>)>,
335 last_key_equivalent: Option<KeyDownEvent>,
336 synthetic_drag_counter: usize,
337 last_fresh_keydown: Option<Keystroke>,
338 traffic_light_position: Option<Point<Pixels>>,
339 previous_modifiers_changed_event: Option<InputEvent>,
340 // State tracking what the IME did after the last request
341 ime_state: ImeState,
342 // Retains the last IME Text
343 ime_text: Option<String>,
344}
345
346impl MacWindowState {
347 fn move_traffic_light(&self) {
348 if let Some(traffic_light_position) = self.traffic_light_position {
349 let titlebar_height = self.titlebar_height();
350
351 unsafe {
352 let close_button: id = msg_send![
353 self.native_window,
354 standardWindowButton: NSWindowButton::NSWindowCloseButton
355 ];
356 let min_button: id = msg_send![
357 self.native_window,
358 standardWindowButton: NSWindowButton::NSWindowMiniaturizeButton
359 ];
360 let zoom_button: id = msg_send![
361 self.native_window,
362 standardWindowButton: NSWindowButton::NSWindowZoomButton
363 ];
364
365 let mut close_button_frame: CGRect = msg_send![close_button, frame];
366 let mut min_button_frame: CGRect = msg_send![min_button, frame];
367 let mut zoom_button_frame: CGRect = msg_send![zoom_button, frame];
368 let mut origin = point(
369 traffic_light_position.x,
370 titlebar_height
371 - traffic_light_position.y
372 - px(close_button_frame.size.height as f32),
373 );
374 let button_spacing =
375 px((min_button_frame.origin.x - close_button_frame.origin.x) as f32);
376
377 close_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
378 let _: () = msg_send![close_button, setFrame: close_button_frame];
379 origin.x += button_spacing;
380
381 min_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
382 let _: () = msg_send![min_button, setFrame: min_button_frame];
383 origin.x += button_spacing;
384
385 zoom_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
386 let _: () = msg_send![zoom_button, setFrame: zoom_button_frame];
387 origin.x += button_spacing;
388 }
389 }
390 }
391
392 fn is_fullscreen(&self) -> bool {
393 unsafe {
394 let style_mask = self.native_window.styleMask();
395 style_mask.contains(NSWindowStyleMask::NSFullScreenWindowMask)
396 }
397 }
398
399 fn bounds(&self) -> WindowBounds {
400 unsafe {
401 if self.is_fullscreen() {
402 return WindowBounds::Fullscreen;
403 }
404
405 let frame = self.frame();
406 let screen_size = self.native_window.screen().visibleFrame().into();
407 if frame.size == screen_size {
408 WindowBounds::Maximized
409 } else {
410 WindowBounds::Fixed(frame)
411 }
412 }
413 }
414
415 fn frame(&self) -> Bounds<GlobalPixels> {
416 unsafe {
417 let frame = NSWindow::frame(self.native_window);
418 display_bounds_from_native(mem::transmute::<NSRect, CGRect>(frame))
419 }
420 }
421
422 fn content_size(&self) -> Size<Pixels> {
423 let NSSize { width, height, .. } =
424 unsafe { NSView::frame(self.native_window.contentView()) }.size;
425 size(px(width as f32), px(height as f32))
426 }
427
428 fn scale_factor(&self) -> f32 {
429 get_scale_factor(self.native_window)
430 }
431
432 fn titlebar_height(&self) -> Pixels {
433 unsafe {
434 let frame = NSWindow::frame(self.native_window);
435 let content_layout_rect: CGRect = msg_send![self.native_window, contentLayoutRect];
436 px((frame.size.height - content_layout_rect.size.height) as f32)
437 }
438 }
439
440 fn to_screen_ns_point(&self, point: Point<Pixels>) -> NSPoint {
441 unsafe {
442 let point = NSPoint::new(
443 point.x.into(),
444 (self.content_size().height - point.y).into(),
445 );
446 msg_send![self.native_window, convertPointToScreen: point]
447 }
448 }
449}
450
451unsafe impl Send for MacWindowState {}
452
453pub struct MacWindow(Arc<Mutex<MacWindowState>>);
454
455impl MacWindow {
456 pub fn open(
457 handle: AnyWindowHandle,
458 options: WindowOptions,
459 draw: DrawWindow,
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(|display_id| MacDisplay::all().find(|display| display.id() == display_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 screen = native_window.screen();
523 match options.bounds {
524 WindowBounds::Fullscreen => {
525 native_window.toggleFullScreen_(nil);
526 }
527 WindowBounds::Maximized => {
528 native_window.setFrame_display_(screen.visibleFrame(), YES);
529 }
530 WindowBounds::Fixed(bounds) => {
531 let display_bounds = display.bounds();
532 let frame = if bounds.intersects(&display_bounds) {
533 display_bounds_to_native(bounds)
534 } else {
535 display_bounds_to_native(display_bounds)
536 };
537 native_window.setFrame_display_(mem::transmute::<CGRect, NSRect>(frame), YES);
538 }
539 }
540
541 let native_view: id = msg_send![VIEW_CLASS, alloc];
542 let native_view = NSView::init(native_view);
543
544 assert!(!native_view.is_null());
545
546 let window = Self(Arc::new(Mutex::new(MacWindowState {
547 handle,
548 executor,
549 native_window,
550 renderer: MetalRenderer::new(true),
551 draw: Some(draw),
552 kind: options.kind,
553 event_callback: None,
554 activate_callback: None,
555 resize_callback: None,
556 fullscreen_callback: None,
557 moved_callback: None,
558 should_close_callback: None,
559 close_callback: None,
560 appearance_changed_callback: None,
561 input_handler: None,
562 pending_key_down: None,
563 last_key_equivalent: None,
564 synthetic_drag_counter: 0,
565 last_fresh_keydown: None,
566 traffic_light_position: options
567 .titlebar
568 .as_ref()
569 .and_then(|titlebar| titlebar.traffic_light_position),
570 previous_modifiers_changed_event: None,
571 ime_state: ImeState::None,
572 ime_text: None,
573 })));
574
575 (*native_window).set_ivar(
576 WINDOW_STATE_IVAR,
577 Arc::into_raw(window.0.clone()) as *const c_void,
578 );
579 native_window.setDelegate_(native_window);
580 (*native_view).set_ivar(
581 WINDOW_STATE_IVAR,
582 Arc::into_raw(window.0.clone()) as *const c_void,
583 );
584
585 if let Some(title) = options
586 .titlebar
587 .as_ref()
588 .and_then(|t| t.title.as_ref().map(AsRef::as_ref))
589 {
590 native_window.setTitle_(NSString::alloc(nil).init_str(title));
591 }
592
593 native_window.setMovable_(options.is_movable as BOOL);
594
595 if options
596 .titlebar
597 .map_or(true, |titlebar| titlebar.appears_transparent)
598 {
599 native_window.setTitlebarAppearsTransparent_(YES);
600 native_window.setTitleVisibility_(NSWindowTitleVisibility::NSWindowTitleHidden);
601 }
602
603 native_view.setAutoresizingMask_(NSViewWidthSizable | NSViewHeightSizable);
604 native_view.setWantsBestResolutionOpenGLSurface_(YES);
605
606 // From winit crate: On Mojave, views automatically become layer-backed shortly after
607 // being added to a native_window. Changing the layer-backedness of a view breaks the
608 // association between the view and its associated OpenGL context. To work around this,
609 // on we explicitly make the view layer-backed up front so that AppKit doesn't do it
610 // itself and break the association with its context.
611 native_view.setWantsLayer(YES);
612 let _: () = msg_send![
613 native_view,
614 setLayerContentsRedrawPolicy: NSViewLayerContentsRedrawDuringViewResize
615 ];
616
617 native_window.setContentView_(native_view.autorelease());
618 native_window.makeFirstResponder_(native_view);
619
620 if options.center {
621 native_window.center();
622 }
623
624 match options.kind {
625 WindowKind::Normal => {
626 native_window.setLevel_(NSNormalWindowLevel);
627 native_window.setAcceptsMouseMovedEvents_(YES);
628 }
629 WindowKind::PopUp => {
630 // Use a tracking area to allow receiving MouseMoved events even when
631 // the window or application aren't active, which is often the case
632 // e.g. for notification windows.
633 let tracking_area: id = msg_send![class!(NSTrackingArea), alloc];
634 let _: () = msg_send![
635 tracking_area,
636 initWithRect: NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.))
637 options: NSTrackingMouseEnteredAndExited | NSTrackingMouseMoved | NSTrackingActiveAlways | NSTrackingInVisibleRect
638 owner: native_view
639 userInfo: nil
640 ];
641 let _: () =
642 msg_send![native_view, addTrackingArea: tracking_area.autorelease()];
643
644 native_window.setLevel_(NSPopUpWindowLevel);
645 let _: () = msg_send![
646 native_window,
647 setAnimationBehavior: NSWindowAnimationBehaviorUtilityWindow
648 ];
649 native_window.setCollectionBehavior_(
650 NSWindowCollectionBehavior::NSWindowCollectionBehaviorCanJoinAllSpaces |
651 NSWindowCollectionBehavior::NSWindowCollectionBehaviorFullScreenAuxiliary
652 );
653 }
654 }
655 if options.focus {
656 native_window.makeKeyAndOrderFront_(nil);
657 } else if options.show {
658 native_window.orderFront_(nil);
659 }
660
661 window.0.lock().move_traffic_light();
662 pool.drain();
663
664 window
665 }
666 }
667
668 pub fn active_window() -> Option<AnyWindowHandle> {
669 unsafe {
670 let app = NSApplication::sharedApplication(nil);
671 let main_window: id = msg_send![app, mainWindow];
672 if msg_send![main_window, isKindOfClass: WINDOW_CLASS] {
673 let handle = get_window_state(&*main_window).lock().handle;
674 Some(handle)
675 } else {
676 None
677 }
678 }
679 }
680}
681
682impl Drop for MacWindow {
683 fn drop(&mut self) {
684 let this = self.0.lock();
685 let window = this.native_window;
686 this.executor
687 .spawn(async move {
688 unsafe {
689 // todo!() this panic()s when you click the red close button
690 // unless should_close returns false.
691 // (luckliy in zed it always returns false)
692 window.close();
693 }
694 })
695 .detach();
696 }
697}
698
699impl PlatformWindow for MacWindow {
700 fn bounds(&self) -> WindowBounds {
701 self.0.as_ref().lock().bounds()
702 }
703
704 fn content_size(&self) -> Size<Pixels> {
705 self.0.as_ref().lock().content_size().into()
706 }
707
708 fn scale_factor(&self) -> f32 {
709 self.0.as_ref().lock().scale_factor()
710 }
711
712 fn titlebar_height(&self) -> Pixels {
713 self.0.as_ref().lock().titlebar_height()
714 }
715
716 fn appearance(&self) -> WindowAppearance {
717 unsafe {
718 let appearance: id = msg_send![self.0.lock().native_window, effectiveAppearance];
719 WindowAppearance::from_native(appearance)
720 }
721 }
722
723 fn display(&self) -> Rc<dyn PlatformDisplay> {
724 unsafe {
725 let screen = self.0.lock().native_window.screen();
726 let device_description: id = msg_send![screen, deviceDescription];
727 let screen_number: id = NSDictionary::valueForKey_(
728 device_description,
729 NSString::alloc(nil).init_str("NSScreenNumber"),
730 );
731
732 let screen_number: u32 = msg_send![screen_number, unsignedIntValue];
733
734 Rc::new(MacDisplay(screen_number))
735 }
736 }
737
738 fn mouse_position(&self) -> Point<Pixels> {
739 let position = unsafe {
740 self.0
741 .lock()
742 .native_window
743 .mouseLocationOutsideOfEventStream()
744 };
745 convert_mouse_position(position, self.content_size().height)
746 }
747
748 fn modifiers(&self) -> Modifiers {
749 unsafe {
750 let modifiers: NSEventModifierFlags = msg_send![class!(NSEvent), modifierFlags];
751
752 let control = modifiers.contains(NSEventModifierFlags::NSControlKeyMask);
753 let alt = modifiers.contains(NSEventModifierFlags::NSAlternateKeyMask);
754 let shift = modifiers.contains(NSEventModifierFlags::NSShiftKeyMask);
755 let command = modifiers.contains(NSEventModifierFlags::NSCommandKeyMask);
756 let function = modifiers.contains(NSEventModifierFlags::NSFunctionKeyMask);
757
758 Modifiers {
759 control,
760 alt,
761 shift,
762 command,
763 function,
764 }
765 }
766 }
767
768 fn as_any_mut(&mut self) -> &mut dyn Any {
769 self
770 }
771
772 fn set_input_handler(&mut self, input_handler: Box<dyn PlatformInputHandler>) {
773 self.0.as_ref().lock().input_handler = Some(input_handler);
774 }
775
776 fn clear_input_handler(&mut self) {
777 self.0.as_ref().lock().input_handler = None;
778 }
779
780 fn prompt(&self, level: PromptLevel, msg: &str, answers: &[&str]) -> oneshot::Receiver<usize> {
781 // macOs applies overrides to modal window buttons after they are added.
782 // Two most important for this logic are:
783 // * Buttons with "Cancel" title will be displayed as the last buttons in the modal
784 // * Last button added to the modal via `addButtonWithTitle` stays focused
785 // * Focused buttons react on "space"/" " keypresses
786 // * Usage of `keyEquivalent`, `makeFirstResponder` or `setInitialFirstResponder` does not change the focus
787 //
788 // See also https://developer.apple.com/documentation/appkit/nsalert/1524532-addbuttonwithtitle#discussion
789 // ```
790 // By default, the first button has a key equivalent of Return,
791 // any button with a title of “Cancel” has a key equivalent of Escape,
792 // 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).
793 // ```
794 //
795 // To avoid situations when the last element added is "Cancel" and it gets the focus
796 // (hence stealing both ESC and Space shortcuts), we find and add one non-Cancel button
797 // last, so it gets focus and a Space shortcut.
798 // This way, "Save this file? Yes/No/Cancel"-ish modals will get all three buttons mapped with a key.
799 let latest_non_cancel_label = answers
800 .iter()
801 .enumerate()
802 .rev()
803 .find(|(_, &label)| label != "Cancel")
804 .filter(|&(label_index, _)| label_index > 0);
805
806 unsafe {
807 let alert: id = msg_send![class!(NSAlert), alloc];
808 let alert: id = msg_send![alert, init];
809 let alert_style = match level {
810 PromptLevel::Info => 1,
811 PromptLevel::Warning => 0,
812 PromptLevel::Critical => 2,
813 };
814 let _: () = msg_send![alert, setAlertStyle: alert_style];
815 let _: () = msg_send![alert, setMessageText: ns_string(msg)];
816
817 for (ix, answer) in answers
818 .iter()
819 .enumerate()
820 .filter(|&(ix, _)| Some(ix) != latest_non_cancel_label.map(|(ix, _)| ix))
821 {
822 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
823 let _: () = msg_send![button, setTag: ix as NSInteger];
824 }
825 if let Some((ix, answer)) = latest_non_cancel_label {
826 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
827 let _: () = msg_send![button, setTag: ix as NSInteger];
828 }
829
830 let (done_tx, done_rx) = oneshot::channel();
831 let done_tx = Cell::new(Some(done_tx));
832 let block = ConcreteBlock::new(move |answer: NSInteger| {
833 if let Some(done_tx) = done_tx.take() {
834 let _ = done_tx.send(answer.try_into().unwrap());
835 }
836 });
837 let block = block.copy();
838 let native_window = self.0.lock().native_window;
839 let executor = self.0.lock().executor.clone();
840 executor
841 .spawn(async move {
842 let _: () = msg_send![
843 alert,
844 beginSheetModalForWindow: native_window
845 completionHandler: block
846 ];
847 })
848 .detach();
849
850 done_rx
851 }
852 }
853
854 fn activate(&self) {
855 let window = self.0.lock().native_window;
856 let executor = self.0.lock().executor.clone();
857 executor
858 .spawn(async move {
859 unsafe {
860 let _: () = msg_send![window, makeKeyAndOrderFront: nil];
861 }
862 })
863 .detach();
864 }
865
866 fn set_title(&mut self, title: &str) {
867 unsafe {
868 let app = NSApplication::sharedApplication(nil);
869 let window = self.0.lock().native_window;
870 let title = ns_string(title);
871 let _: () = msg_send![app, changeWindowsItem:window title:title filename:false];
872 let _: () = msg_send![window, setTitle: title];
873 self.0.lock().move_traffic_light();
874 }
875 }
876
877 fn set_edited(&mut self, edited: bool) {
878 unsafe {
879 let window = self.0.lock().native_window;
880 msg_send![window, setDocumentEdited: edited as BOOL]
881 }
882
883 // Changing the document edited state resets the traffic light position,
884 // so we have to move it again.
885 self.0.lock().move_traffic_light();
886 }
887
888 fn show_character_palette(&self) {
889 unsafe {
890 let app = NSApplication::sharedApplication(nil);
891 let window = self.0.lock().native_window;
892 let _: () = msg_send![app, orderFrontCharacterPalette: window];
893 }
894 }
895
896 fn minimize(&self) {
897 let window = self.0.lock().native_window;
898 unsafe {
899 window.miniaturize_(nil);
900 }
901 }
902
903 fn zoom(&self) {
904 let this = self.0.lock();
905 let window = this.native_window;
906 this.executor
907 .spawn(async move {
908 unsafe {
909 window.zoom_(nil);
910 }
911 })
912 .detach();
913 }
914
915 fn toggle_full_screen(&self) {
916 let this = self.0.lock();
917 let window = this.native_window;
918 this.executor
919 .spawn(async move {
920 unsafe {
921 window.toggleFullScreen_(nil);
922 }
923 })
924 .detach();
925 }
926
927 fn on_input(&self, callback: Box<dyn FnMut(InputEvent) -> bool>) {
928 self.0.as_ref().lock().event_callback = Some(callback);
929 }
930
931 fn on_active_status_change(&self, callback: Box<dyn FnMut(bool)>) {
932 self.0.as_ref().lock().activate_callback = Some(callback);
933 }
934
935 fn on_resize(&self, callback: Box<dyn FnMut(Size<Pixels>, f32)>) {
936 self.0.as_ref().lock().resize_callback = Some(callback);
937 }
938
939 fn on_fullscreen(&self, callback: Box<dyn FnMut(bool)>) {
940 self.0.as_ref().lock().fullscreen_callback = Some(callback);
941 }
942
943 fn on_moved(&self, callback: Box<dyn FnMut()>) {
944 self.0.as_ref().lock().moved_callback = Some(callback);
945 }
946
947 fn on_should_close(&self, callback: Box<dyn FnMut() -> bool>) {
948 self.0.as_ref().lock().should_close_callback = Some(callback);
949 }
950
951 fn on_close(&self, callback: Box<dyn FnOnce()>) {
952 self.0.as_ref().lock().close_callback = Some(callback);
953 }
954
955 fn on_appearance_changed(&self, callback: Box<dyn FnMut()>) {
956 self.0.lock().appearance_changed_callback = Some(callback);
957 }
958
959 fn is_topmost_for_position(&self, position: Point<Pixels>) -> bool {
960 let self_borrow = self.0.lock();
961 let self_handle = self_borrow.handle;
962
963 unsafe {
964 let app = NSApplication::sharedApplication(nil);
965
966 // Convert back to screen coordinates
967 let screen_point = self_borrow.to_screen_ns_point(position);
968
969 let window_number: NSInteger = msg_send![class!(NSWindow), windowNumberAtPoint:screen_point belowWindowWithWindowNumber:0];
970 let top_most_window: id = msg_send![app, windowWithWindowNumber: window_number];
971
972 let is_panel: BOOL = msg_send![top_most_window, isKindOfClass: PANEL_CLASS];
973 let is_window: BOOL = msg_send![top_most_window, isKindOfClass: WINDOW_CLASS];
974 if is_panel == YES || is_window == YES {
975 let topmost_window = get_window_state(&*top_most_window).lock().handle;
976 topmost_window == self_handle
977 } else {
978 // Someone else's window is on top
979 false
980 }
981 }
982 }
983
984 fn invalidate(&self) {
985 let this = self.0.lock();
986 unsafe {
987 let _: () = msg_send![this.native_window.contentView(), setNeedsDisplay: YES];
988 }
989 }
990
991 fn sprite_atlas(&self) -> Arc<dyn PlatformAtlas> {
992 self.0.lock().renderer.sprite_atlas().clone()
993 }
994}
995
996fn get_scale_factor(native_window: id) -> f32 {
997 unsafe {
998 let screen: id = msg_send![native_window, screen];
999 NSScreen::backingScaleFactor(screen) as f32
1000 }
1001}
1002
1003unsafe fn get_window_state(object: &Object) -> Arc<Mutex<MacWindowState>> {
1004 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1005 let rc1 = Arc::from_raw(raw as *mut Mutex<MacWindowState>);
1006 let rc2 = rc1.clone();
1007 mem::forget(rc1);
1008 rc2
1009}
1010
1011unsafe fn drop_window_state(object: &Object) {
1012 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
1013 Rc::from_raw(raw as *mut RefCell<MacWindowState>);
1014}
1015
1016extern "C" fn yes(_: &Object, _: Sel) -> BOOL {
1017 YES
1018}
1019
1020extern "C" fn dealloc_window(this: &Object, _: Sel) {
1021 unsafe {
1022 drop_window_state(this);
1023 let _: () = msg_send![super(this, class!(NSWindow)), dealloc];
1024 }
1025}
1026
1027extern "C" fn dealloc_view(this: &Object, _: Sel) {
1028 unsafe {
1029 drop_window_state(this);
1030 let _: () = msg_send![super(this, class!(NSView)), dealloc];
1031 }
1032}
1033
1034extern "C" fn handle_key_equivalent(this: &Object, _: Sel, native_event: id) -> BOOL {
1035 handle_key_event(this, native_event, true)
1036}
1037
1038extern "C" fn handle_key_down(this: &Object, _: Sel, native_event: id) {
1039 handle_key_event(this, native_event, false);
1040}
1041
1042extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent: bool) -> BOOL {
1043 let window_state = unsafe { get_window_state(this) };
1044 let mut lock = window_state.as_ref().lock();
1045
1046 let window_height = lock.content_size().height;
1047 let event = unsafe { InputEvent::from_native(native_event, Some(window_height)) };
1048
1049 if let Some(InputEvent::KeyDown(event)) = event {
1050 // For certain keystrokes, macOS will first dispatch a "key equivalent" event.
1051 // If that event isn't handled, it will then dispatch a "key down" event. GPUI
1052 // makes no distinction between these two types of events, so we need to ignore
1053 // the "key down" event if we've already just processed its "key equivalent" version.
1054 if key_equivalent {
1055 lock.last_key_equivalent = Some(event.clone());
1056 } else if lock.last_key_equivalent.take().as_ref() == Some(&event) {
1057 return NO;
1058 }
1059
1060 let keydown = event.keystroke.clone();
1061 let fn_modifier = keydown.modifiers.function;
1062 // Ignore events from held-down keys after some of the initially-pressed keys
1063 // were released.
1064 if event.is_held {
1065 if lock.last_fresh_keydown.as_ref() != Some(&keydown) {
1066 return YES;
1067 }
1068 } else {
1069 lock.last_fresh_keydown = Some(keydown);
1070 }
1071 lock.pending_key_down = Some((event, None));
1072 drop(lock);
1073
1074 // Send the event to the input context for IME handling, unless the `fn` modifier is
1075 // being pressed.
1076 if !fn_modifier {
1077 unsafe {
1078 let input_context: id = msg_send![this, inputContext];
1079 let _: BOOL = msg_send![input_context, handleEvent: native_event];
1080 }
1081 }
1082
1083 let mut handled = false;
1084 let mut lock = window_state.lock();
1085 let ime_text = lock.ime_text.clone();
1086 if let Some((event, insert_text)) = lock.pending_key_down.take() {
1087 let is_held = event.is_held;
1088 if let Some(mut callback) = lock.event_callback.take() {
1089 drop(lock);
1090
1091 let is_composing =
1092 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1093 .flatten()
1094 .is_some();
1095 if !is_composing {
1096 // if the IME has changed the key, we'll first emit an event with the character
1097 // generated by the IME system; then fallback to the keystroke if that is not
1098 // handled.
1099 // cases that we have working:
1100 // - " on a brazillian layout by typing <quote><space>
1101 // - ctrl-` on a brazillian layout by typing <ctrl-`>
1102 // - $ on a czech QWERTY layout by typing <alt-4>
1103 // - 4 on a czech QWERTY layout by typing <shift-4>
1104 // - ctrl-4 on a czech QWERTY layout by typing <ctrl-alt-4> (or <ctrl-shift-4>)
1105 if ime_text.is_some() && ime_text.as_ref() != Some(&event.keystroke.key) {
1106 let event_with_ime_text = KeyDownEvent {
1107 is_held: false,
1108 keystroke: Keystroke {
1109 // we match ctrl because some use-cases need it.
1110 // we don't match alt because it's often used to generate the optional character
1111 // we don't match shift because we're not here with letters (usually)
1112 // we don't match cmd/fn because they don't seem to use IME
1113 modifiers: Default::default(),
1114 key: ime_text.clone().unwrap(),
1115 ime_key: None, // todo!("handle IME key")
1116 },
1117 };
1118 handled = callback(InputEvent::KeyDown(event_with_ime_text));
1119 }
1120 if !handled {
1121 // empty key happens when you type a deadkey in input composition.
1122 // (e.g. on a brazillian keyboard typing quote is a deadkey)
1123 if !event.keystroke.key.is_empty() {
1124 handled = callback(InputEvent::KeyDown(event));
1125 }
1126 }
1127 }
1128
1129 if !handled {
1130 if let Some(insert) = insert_text {
1131 handled = true;
1132 with_input_handler(this, |input_handler| {
1133 input_handler
1134 .replace_text_in_range(insert.replacement_range, &insert.text)
1135 });
1136 } else if !is_composing && is_held {
1137 if let Some(last_insert_text) = ime_text {
1138 //MacOS IME is a bit funky, and even when you've told it there's nothing to
1139 //inter it will still swallow certain keys (e.g. 'f', 'j') and not others
1140 //(e.g. 'n'). This is a problem for certain kinds of views, like the terminal
1141 with_input_handler(this, |input_handler| {
1142 if input_handler.selected_text_range().is_none() {
1143 handled = true;
1144 input_handler.replace_text_in_range(None, &last_insert_text)
1145 }
1146 });
1147 }
1148 }
1149 }
1150
1151 window_state.lock().event_callback = Some(callback);
1152 }
1153 } else {
1154 handled = true;
1155 }
1156
1157 handled as BOOL
1158 } else {
1159 NO
1160 }
1161}
1162
1163extern "C" fn handle_view_event(this: &Object, _: Sel, native_event: id) {
1164 let window_state = unsafe { get_window_state(this) };
1165 let weak_window_state = Arc::downgrade(&window_state);
1166 let mut lock = window_state.as_ref().lock();
1167 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1168
1169 let window_height = lock.content_size().height;
1170 let event = unsafe { InputEvent::from_native(native_event, Some(window_height)) };
1171
1172 if let Some(mut event) = event {
1173 match &mut event {
1174 InputEvent::MouseDown(
1175 event @ MouseDownEvent {
1176 button: MouseButton::Left,
1177 modifiers: Modifiers { control: true, .. },
1178 ..
1179 },
1180 ) => {
1181 // On mac, a ctrl-left click should be handled as a right click.
1182 *event = MouseDownEvent {
1183 button: MouseButton::Right,
1184 modifiers: Modifiers {
1185 control: false,
1186 ..event.modifiers
1187 },
1188 click_count: 1,
1189 ..*event
1190 };
1191 }
1192
1193 // Because we map a ctrl-left_down to a right_down -> right_up let's ignore
1194 // the ctrl-left_up to avoid having a mismatch in button down/up events if the
1195 // user is still holding ctrl when releasing the left mouse button
1196 InputEvent::MouseUp(
1197 event @ MouseUpEvent {
1198 button: MouseButton::Left,
1199 modifiers: Modifiers { control: true, .. },
1200 ..
1201 },
1202 ) => {
1203 *event = MouseUpEvent {
1204 button: MouseButton::Right,
1205 modifiers: Modifiers {
1206 control: false,
1207 ..event.modifiers
1208 },
1209 click_count: 1,
1210 ..*event
1211 };
1212 }
1213
1214 _ => {}
1215 };
1216
1217 match &event {
1218 InputEvent::MouseMove(
1219 event @ MouseMoveEvent {
1220 pressed_button: Some(_),
1221 ..
1222 },
1223 ) => {
1224 lock.synthetic_drag_counter += 1;
1225 let executor = lock.executor.clone();
1226 executor
1227 .spawn(synthetic_drag(
1228 weak_window_state,
1229 lock.synthetic_drag_counter,
1230 event.clone(),
1231 ))
1232 .detach();
1233 }
1234
1235 InputEvent::MouseMove(_) if !(is_active || lock.kind == WindowKind::PopUp) => return,
1236
1237 InputEvent::MouseUp(MouseUpEvent { .. }) => {
1238 lock.synthetic_drag_counter += 1;
1239 }
1240
1241 InputEvent::ModifiersChanged(ModifiersChangedEvent { modifiers }) => {
1242 // Only raise modifiers changed event when they have actually changed
1243 if let Some(InputEvent::ModifiersChanged(ModifiersChangedEvent {
1244 modifiers: prev_modifiers,
1245 })) = &lock.previous_modifiers_changed_event
1246 {
1247 if prev_modifiers == modifiers {
1248 return;
1249 }
1250 }
1251
1252 lock.previous_modifiers_changed_event = Some(event.clone());
1253 }
1254
1255 _ => {}
1256 }
1257
1258 if let Some(mut callback) = lock.event_callback.take() {
1259 drop(lock);
1260 callback(event);
1261 window_state.lock().event_callback = Some(callback);
1262 }
1263 }
1264}
1265
1266// Allows us to receive `cmd-.` (the shortcut for closing a dialog)
1267// https://bugs.eclipse.org/bugs/show_bug.cgi?id=300620#c6
1268extern "C" fn cancel_operation(this: &Object, _sel: Sel, _sender: id) {
1269 let window_state = unsafe { get_window_state(this) };
1270 let mut lock = window_state.as_ref().lock();
1271
1272 let keystroke = Keystroke {
1273 modifiers: Default::default(),
1274 key: ".".into(),
1275 ime_key: None,
1276 };
1277 let event = InputEvent::KeyDown(KeyDownEvent {
1278 keystroke: keystroke.clone(),
1279 is_held: false,
1280 });
1281
1282 lock.last_fresh_keydown = Some(keystroke);
1283 if let Some(mut callback) = lock.event_callback.take() {
1284 drop(lock);
1285 callback(event);
1286 window_state.lock().event_callback = Some(callback);
1287 }
1288}
1289
1290extern "C" fn window_did_resize(this: &Object, _: Sel, _: id) {
1291 let window_state = unsafe { get_window_state(this) };
1292 window_state.as_ref().lock().move_traffic_light();
1293}
1294
1295extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) {
1296 window_fullscreen_changed(this, true);
1297}
1298
1299extern "C" fn window_will_exit_fullscreen(this: &Object, _: Sel, _: id) {
1300 window_fullscreen_changed(this, false);
1301}
1302
1303fn window_fullscreen_changed(this: &Object, is_fullscreen: bool) {
1304 let window_state = unsafe { get_window_state(this) };
1305 let mut lock = window_state.as_ref().lock();
1306 if let Some(mut callback) = lock.fullscreen_callback.take() {
1307 drop(lock);
1308 callback(is_fullscreen);
1309 window_state.lock().fullscreen_callback = Some(callback);
1310 }
1311}
1312
1313extern "C" fn window_did_move(this: &Object, _: Sel, _: id) {
1314 let window_state = unsafe { get_window_state(this) };
1315 let mut lock = window_state.as_ref().lock();
1316 if let Some(mut callback) = lock.moved_callback.take() {
1317 drop(lock);
1318 callback();
1319 window_state.lock().moved_callback = Some(callback);
1320 }
1321}
1322
1323extern "C" fn window_did_change_key_status(this: &Object, selector: Sel, _: id) {
1324 let window_state = unsafe { get_window_state(this) };
1325 let lock = window_state.lock();
1326 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1327
1328 // When opening a pop-up while the application isn't active, Cocoa sends a spurious
1329 // `windowDidBecomeKey` message to the previous key window even though that window
1330 // isn't actually key. This causes a bug if the application is later activated while
1331 // the pop-up is still open, making it impossible to activate the previous key window
1332 // even if the pop-up gets closed. The only way to activate it again is to de-activate
1333 // the app and re-activate it, which is a pretty bad UX.
1334 // The following code detects the spurious event and invokes `resignKeyWindow`:
1335 // in theory, we're not supposed to invoke this method manually but it balances out
1336 // the spurious `becomeKeyWindow` event and helps us work around that bug.
1337 if selector == sel!(windowDidBecomeKey:) {
1338 if !is_active {
1339 unsafe {
1340 let _: () = msg_send![lock.native_window, resignKeyWindow];
1341 return;
1342 }
1343 }
1344 }
1345
1346 let executor = lock.executor.clone();
1347 drop(lock);
1348 executor
1349 .spawn(async move {
1350 let mut lock = window_state.as_ref().lock();
1351 if let Some(mut callback) = lock.activate_callback.take() {
1352 drop(lock);
1353 callback(is_active);
1354 window_state.lock().activate_callback = Some(callback);
1355 };
1356 })
1357 .detach();
1358}
1359
1360extern "C" fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
1361 let window_state = unsafe { get_window_state(this) };
1362 let mut lock = window_state.as_ref().lock();
1363 if let Some(mut callback) = lock.should_close_callback.take() {
1364 drop(lock);
1365 let should_close = callback();
1366 window_state.lock().should_close_callback = Some(callback);
1367 should_close as BOOL
1368 } else {
1369 YES
1370 }
1371}
1372
1373extern "C" fn close_window(this: &Object, _: Sel) {
1374 unsafe {
1375 let close_callback = {
1376 let window_state = get_window_state(this);
1377 window_state
1378 .as_ref()
1379 .try_lock()
1380 .and_then(|mut window_state| window_state.close_callback.take())
1381 };
1382
1383 if let Some(callback) = close_callback {
1384 callback();
1385 }
1386
1387 let _: () = msg_send![super(this, class!(NSWindow)), close];
1388 }
1389}
1390
1391extern "C" fn make_backing_layer(this: &Object, _: Sel) -> id {
1392 let window_state = unsafe { get_window_state(this) };
1393 let window_state = window_state.as_ref().lock();
1394 window_state.renderer.layer().as_ptr() as id
1395}
1396
1397extern "C" fn view_did_change_backing_properties(this: &Object, _: Sel) {
1398 let window_state = unsafe { get_window_state(this) };
1399 let mut lock = window_state.as_ref().lock();
1400
1401 unsafe {
1402 let scale_factor = lock.scale_factor() as f64;
1403 let size = lock.content_size();
1404 let drawable_size: NSSize = NSSize {
1405 width: f64::from(size.width) * scale_factor,
1406 height: f64::from(size.height) * scale_factor,
1407 };
1408
1409 let _: () = msg_send![
1410 lock.renderer.layer(),
1411 setContentsScale: scale_factor
1412 ];
1413 let _: () = msg_send![
1414 lock.renderer.layer(),
1415 setDrawableSize: drawable_size
1416 ];
1417 }
1418
1419 if let Some(mut callback) = lock.resize_callback.take() {
1420 let content_size = lock.content_size();
1421 let scale_factor = lock.scale_factor();
1422 drop(lock);
1423 callback(content_size, scale_factor);
1424 window_state.as_ref().lock().resize_callback = Some(callback);
1425 };
1426}
1427
1428extern "C" fn set_frame_size(this: &Object, _: Sel, size: NSSize) {
1429 let window_state = unsafe { get_window_state(this) };
1430 let lock = window_state.as_ref().lock();
1431
1432 if lock.content_size() == size.into() {
1433 return;
1434 }
1435
1436 unsafe {
1437 let _: () = msg_send![super(this, class!(NSView)), setFrameSize: size];
1438 }
1439
1440 let scale_factor = lock.scale_factor() as f64;
1441 let drawable_size: NSSize = NSSize {
1442 width: size.width * scale_factor,
1443 height: size.height * scale_factor,
1444 };
1445
1446 unsafe {
1447 let _: () = msg_send![
1448 lock.renderer.layer(),
1449 setDrawableSize: drawable_size
1450 ];
1451 }
1452
1453 drop(lock);
1454 let mut lock = window_state.lock();
1455 if let Some(mut callback) = lock.resize_callback.take() {
1456 let content_size = lock.content_size();
1457 let scale_factor = lock.scale_factor();
1458 drop(lock);
1459 callback(content_size, scale_factor);
1460 window_state.lock().resize_callback = Some(callback);
1461 };
1462}
1463
1464extern "C" fn display_layer(this: &Object, _: Sel, _: id) {
1465 unsafe {
1466 let window_state = get_window_state(this);
1467 let mut draw = window_state.lock().draw.take().unwrap();
1468 let scene = draw().log_err();
1469 let mut window_state = window_state.lock();
1470 window_state.draw = Some(draw);
1471 if let Some(scene) = scene {
1472 window_state.renderer.draw(&scene);
1473 }
1474 }
1475}
1476
1477extern "C" fn valid_attributes_for_marked_text(_: &Object, _: Sel) -> id {
1478 unsafe { msg_send![class!(NSArray), array] }
1479}
1480
1481extern "C" fn has_marked_text(this: &Object, _: Sel) -> BOOL {
1482 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1483 .flatten()
1484 .is_some() as BOOL
1485}
1486
1487extern "C" fn marked_range(this: &Object, _: Sel) -> NSRange {
1488 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1489 .flatten()
1490 .map_or(NSRange::invalid(), |range| range.into())
1491}
1492
1493extern "C" fn selected_range(this: &Object, _: Sel) -> NSRange {
1494 with_input_handler(this, |input_handler| input_handler.selected_text_range())
1495 .flatten()
1496 .map_or(NSRange::invalid(), |range| range.into())
1497}
1498
1499extern "C" fn first_rect_for_character_range(
1500 this: &Object,
1501 _: Sel,
1502 range: NSRange,
1503 _: id,
1504) -> NSRect {
1505 let frame = unsafe {
1506 let window = get_window_state(this).lock().native_window;
1507 NSView::frame(window)
1508 };
1509 with_input_handler(this, |input_handler| {
1510 input_handler.bounds_for_range(range.to_range()?)
1511 })
1512 .flatten()
1513 .map_or(
1514 NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)),
1515 |bounds| {
1516 NSRect::new(
1517 NSPoint::new(
1518 frame.origin.x + bounds.origin.x.0 as f64,
1519 frame.origin.y + frame.size.height
1520 - bounds.origin.y.0 as f64
1521 - bounds.size.height.0 as f64,
1522 ),
1523 NSSize::new(bounds.size.width.0 as f64, bounds.size.height.0 as f64),
1524 )
1525 },
1526 )
1527}
1528
1529extern "C" fn insert_text(this: &Object, _: Sel, text: id, replacement_range: NSRange) {
1530 unsafe {
1531 let window_state = get_window_state(this);
1532 let mut lock = window_state.lock();
1533 let pending_key_down = lock.pending_key_down.take();
1534 drop(lock);
1535
1536 let is_attributed_string: BOOL =
1537 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1538 let text: id = if is_attributed_string == YES {
1539 msg_send![text, string]
1540 } else {
1541 text
1542 };
1543 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1544 .to_str()
1545 .unwrap();
1546 let replacement_range = replacement_range.to_range();
1547
1548 window_state.lock().ime_text = Some(text.to_string());
1549 window_state.lock().ime_state = ImeState::Acted;
1550
1551 let is_composing =
1552 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1553 .flatten()
1554 .is_some();
1555
1556 if is_composing || text.chars().count() > 1 || pending_key_down.is_none() {
1557 with_input_handler(this, |input_handler| {
1558 input_handler.replace_text_in_range(replacement_range, text)
1559 });
1560 } else {
1561 let mut pending_key_down = pending_key_down.unwrap();
1562 pending_key_down.1 = Some(InsertText {
1563 replacement_range,
1564 text: text.to_string(),
1565 });
1566 window_state.lock().pending_key_down = Some(pending_key_down);
1567 }
1568 }
1569}
1570
1571extern "C" fn set_marked_text(
1572 this: &Object,
1573 _: Sel,
1574 text: id,
1575 selected_range: NSRange,
1576 replacement_range: NSRange,
1577) {
1578 unsafe {
1579 let window_state = get_window_state(this);
1580 window_state.lock().pending_key_down.take();
1581
1582 let is_attributed_string: BOOL =
1583 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1584 let text: id = if is_attributed_string == YES {
1585 msg_send![text, string]
1586 } else {
1587 text
1588 };
1589 let selected_range = selected_range.to_range();
1590 let replacement_range = replacement_range.to_range();
1591 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1592 .to_str()
1593 .unwrap();
1594
1595 window_state.lock().ime_state = ImeState::Acted;
1596 window_state.lock().ime_text = Some(text.to_string());
1597
1598 with_input_handler(this, |input_handler| {
1599 input_handler.replace_and_mark_text_in_range(replacement_range, text, selected_range);
1600 });
1601 }
1602}
1603
1604extern "C" fn unmark_text(this: &Object, _: Sel) {
1605 unsafe {
1606 let state = get_window_state(this);
1607 let mut borrow = state.lock();
1608 borrow.ime_state = ImeState::Acted;
1609 borrow.ime_text.take();
1610 }
1611
1612 with_input_handler(this, |input_handler| input_handler.unmark_text());
1613}
1614
1615extern "C" fn attributed_substring_for_proposed_range(
1616 this: &Object,
1617 _: Sel,
1618 range: NSRange,
1619 _actual_range: *mut c_void,
1620) -> id {
1621 with_input_handler(this, |input_handler| {
1622 let range = range.to_range()?;
1623 if range.is_empty() {
1624 return None;
1625 }
1626
1627 let selected_text = input_handler.text_for_range(range)?;
1628 unsafe {
1629 let string: id = msg_send![class!(NSAttributedString), alloc];
1630 let string: id = msg_send![string, initWithString: ns_string(&selected_text)];
1631 Some(string)
1632 }
1633 })
1634 .flatten()
1635 .unwrap_or(nil)
1636}
1637
1638extern "C" fn do_command_by_selector(this: &Object, _: Sel, _: Sel) {
1639 unsafe {
1640 let state = get_window_state(this);
1641 let mut borrow = state.lock();
1642 borrow.ime_state = ImeState::Continue;
1643 borrow.ime_text.take();
1644 }
1645}
1646
1647extern "C" fn view_did_change_effective_appearance(this: &Object, _: Sel) {
1648 unsafe {
1649 let state = get_window_state(this);
1650 let mut lock = state.as_ref().lock();
1651 if let Some(mut callback) = lock.appearance_changed_callback.take() {
1652 drop(lock);
1653 callback();
1654 state.lock().appearance_changed_callback = Some(callback);
1655 }
1656 }
1657}
1658
1659extern "C" fn accepts_first_mouse(this: &Object, _: Sel, _: id) -> BOOL {
1660 unsafe {
1661 let state = get_window_state(this);
1662 let lock = state.as_ref().lock();
1663 return if lock.kind == WindowKind::PopUp {
1664 YES
1665 } else {
1666 NO
1667 };
1668 }
1669}
1670
1671extern "C" fn dragging_entered(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1672 let window_state = unsafe { get_window_state(this) };
1673 if send_new_event(&window_state, {
1674 let position = drag_event_position(&window_state, dragging_info);
1675 let paths = external_paths_from_event(dragging_info);
1676 InputEvent::FileDrop(FileDropEvent::Entered {
1677 position,
1678 files: paths,
1679 })
1680 }) {
1681 NSDragOperationCopy
1682 } else {
1683 NSDragOperationNone
1684 }
1685}
1686
1687extern "C" fn dragging_updated(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1688 let window_state = unsafe { get_window_state(this) };
1689 let position = drag_event_position(&window_state, dragging_info);
1690 if send_new_event(
1691 &window_state,
1692 InputEvent::FileDrop(FileDropEvent::Pending { position }),
1693 ) {
1694 NSDragOperationCopy
1695 } else {
1696 NSDragOperationNone
1697 }
1698}
1699
1700extern "C" fn dragging_exited(this: &Object, _: Sel, _: id) {
1701 let window_state = unsafe { get_window_state(this) };
1702 send_new_event(&window_state, InputEvent::FileDrop(FileDropEvent::Exited));
1703}
1704
1705extern "C" fn perform_drag_operation(this: &Object, _: Sel, dragging_info: id) -> BOOL {
1706 let window_state = unsafe { get_window_state(this) };
1707 let position = drag_event_position(&window_state, dragging_info);
1708 if send_new_event(
1709 &window_state,
1710 InputEvent::FileDrop(FileDropEvent::Submit { position }),
1711 ) {
1712 YES
1713 } else {
1714 NO
1715 }
1716}
1717
1718fn external_paths_from_event(dragging_info: *mut Object) -> ExternalPaths {
1719 let mut paths = SmallVec::new();
1720 let pasteboard: id = unsafe { msg_send![dragging_info, draggingPasteboard] };
1721 let filenames = unsafe { NSPasteboard::propertyListForType(pasteboard, NSFilenamesPboardType) };
1722 for file in unsafe { filenames.iter() } {
1723 let path = unsafe {
1724 let f = NSString::UTF8String(file);
1725 CStr::from_ptr(f).to_string_lossy().into_owned()
1726 };
1727 paths.push(PathBuf::from(path))
1728 }
1729 ExternalPaths(paths)
1730}
1731
1732extern "C" fn conclude_drag_operation(this: &Object, _: Sel, _: id) {
1733 let window_state = unsafe { get_window_state(this) };
1734 send_new_event(&window_state, InputEvent::FileDrop(FileDropEvent::Exited));
1735}
1736
1737async fn synthetic_drag(
1738 window_state: Weak<Mutex<MacWindowState>>,
1739 drag_id: usize,
1740 event: MouseMoveEvent,
1741) {
1742 loop {
1743 Timer::after(Duration::from_millis(16)).await;
1744 if let Some(window_state) = window_state.upgrade() {
1745 let mut lock = window_state.lock();
1746 if lock.synthetic_drag_counter == drag_id {
1747 if let Some(mut callback) = lock.event_callback.take() {
1748 drop(lock);
1749 callback(InputEvent::MouseMove(event.clone()));
1750 window_state.lock().event_callback = Some(callback);
1751 }
1752 } else {
1753 break;
1754 }
1755 }
1756 }
1757}
1758
1759fn send_new_event(window_state_lock: &Mutex<MacWindowState>, e: InputEvent) -> bool {
1760 let window_state = window_state_lock.lock().event_callback.take();
1761 if let Some(mut callback) = window_state {
1762 callback(e);
1763 window_state_lock.lock().event_callback = Some(callback);
1764 true
1765 } else {
1766 false
1767 }
1768}
1769
1770fn drag_event_position(window_state: &Mutex<MacWindowState>, dragging_info: id) -> Point<Pixels> {
1771 let drag_location: NSPoint = unsafe { msg_send![dragging_info, draggingLocation] };
1772 convert_mouse_position(drag_location, window_state.lock().content_size().height)
1773}
1774
1775fn with_input_handler<F, R>(window: &Object, f: F) -> Option<R>
1776where
1777 F: FnOnce(&mut dyn PlatformInputHandler) -> R,
1778{
1779 let window_state = unsafe { get_window_state(window) };
1780 let mut lock = window_state.as_ref().lock();
1781 if let Some(mut input_handler) = lock.input_handler.take() {
1782 drop(lock);
1783 let result = f(input_handler.as_mut());
1784 window_state.lock().input_handler = Some(input_handler);
1785 Some(result)
1786 } else {
1787 None
1788 }
1789}