1use super::{display_bounds_from_native, ns_string, MacDisplay, MetalRenderer, NSRange};
2use crate::{
3 display_bounds_to_native, point, px, size, AnyWindowHandle, Bounds, ExternalPaths,
4 FileDropEvent, ForegroundExecutor, GlobalPixels, InputEvent, KeyDownEvent, Keystroke,
5 Modifiers, ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent,
6 Pixels, PlatformAtlas, PlatformDisplay, PlatformInputHandler, PlatformWindow, Point, Scene,
7 Size, Timer, WindowAppearance, WindowBounds, WindowKind, WindowOptions, WindowPromptLevel,
8};
9use block::ConcreteBlock;
10use cocoa::{
11 appkit::{
12 CGPoint, NSApplication, NSBackingStoreBuffered, NSFilenamesPboardType, NSPasteboard,
13 NSScreen, NSView, NSViewHeightSizable, NSViewWidthSizable, NSWindow, NSWindowButton,
14 NSWindowCollectionBehavior, NSWindowStyleMask, NSWindowTitleVisibility,
15 },
16 base::{id, nil},
17 foundation::{
18 NSArray, NSAutoreleasePool, NSDictionary, NSFastEnumeration, NSInteger, NSPoint, NSRect,
19 NSSize, NSString, NSUInteger,
20 },
21};
22use core_graphics::display::CGRect;
23use ctor::ctor;
24use foreign_types::ForeignTypeRef;
25use futures::channel::oneshot;
26use objc::{
27 class,
28 declare::ClassDecl,
29 msg_send,
30 runtime::{Class, Object, Protocol, Sel, BOOL, NO, YES},
31 sel, sel_impl,
32};
33use parking_lot::Mutex;
34use smallvec::SmallVec;
35use std::{
36 any::Any,
37 cell::{Cell, RefCell},
38 ffi::{c_void, CStr},
39 mem,
40 ops::Range,
41 os::raw::c_char,
42 path::PathBuf,
43 ptr,
44 rc::Rc,
45 sync::{Arc, Weak},
46 time::Duration,
47};
48
49const WINDOW_STATE_IVAR: &str = "windowState";
50
51static mut WINDOW_CLASS: *const Class = ptr::null();
52static mut PANEL_CLASS: *const Class = ptr::null();
53static mut VIEW_CLASS: *const Class = ptr::null();
54
55#[allow(non_upper_case_globals)]
56const NSWindowStyleMaskNonactivatingPanel: NSWindowStyleMask =
57 unsafe { NSWindowStyleMask::from_bits_unchecked(1 << 7) };
58#[allow(non_upper_case_globals)]
59const NSNormalWindowLevel: NSInteger = 0;
60#[allow(non_upper_case_globals)]
61const NSPopUpWindowLevel: NSInteger = 101;
62#[allow(non_upper_case_globals)]
63const NSTrackingMouseEnteredAndExited: NSUInteger = 0x01;
64#[allow(non_upper_case_globals)]
65const NSTrackingMouseMoved: NSUInteger = 0x02;
66#[allow(non_upper_case_globals)]
67const NSTrackingActiveAlways: NSUInteger = 0x80;
68#[allow(non_upper_case_globals)]
69const NSTrackingInVisibleRect: NSUInteger = 0x200;
70#[allow(non_upper_case_globals)]
71const NSWindowAnimationBehaviorUtilityWindow: NSInteger = 4;
72#[allow(non_upper_case_globals)]
73const NSViewLayerContentsRedrawDuringViewResize: NSInteger = 2;
74// https://developer.apple.com/documentation/appkit/nsdragoperation
75#[allow(non_upper_case_globals)]
76type NSDragOperation = NSUInteger;
77#[allow(non_upper_case_globals)]
78const NSDragOperationNone: NSDragOperation = 0;
79#[allow(non_upper_case_globals)]
80const NSDragOperationCopy: NSDragOperation = 1;
81
82#[ctor]
83unsafe fn build_classes() {
84 ::util::gpui2_loaded();
85
86 WINDOW_CLASS = build_window_class("GPUIWindow", class!(NSWindow));
87 PANEL_CLASS = build_window_class("GPUIPanel", class!(NSPanel));
88 VIEW_CLASS = {
89 let mut decl = ClassDecl::new("GPUIView", class!(NSView)).unwrap();
90 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
91
92 decl.add_method(sel!(dealloc), dealloc_view as extern "C" fn(&Object, Sel));
93
94 decl.add_method(
95 sel!(performKeyEquivalent:),
96 handle_key_equivalent as extern "C" fn(&Object, Sel, id) -> BOOL,
97 );
98 decl.add_method(
99 sel!(keyDown:),
100 handle_key_down as extern "C" fn(&Object, Sel, id),
101 );
102 decl.add_method(
103 sel!(mouseDown:),
104 handle_view_event as extern "C" fn(&Object, Sel, id),
105 );
106 decl.add_method(
107 sel!(mouseUp:),
108 handle_view_event as extern "C" fn(&Object, Sel, id),
109 );
110 decl.add_method(
111 sel!(rightMouseDown:),
112 handle_view_event as extern "C" fn(&Object, Sel, id),
113 );
114 decl.add_method(
115 sel!(rightMouseUp:),
116 handle_view_event as extern "C" fn(&Object, Sel, id),
117 );
118 decl.add_method(
119 sel!(otherMouseDown:),
120 handle_view_event as extern "C" fn(&Object, Sel, id),
121 );
122 decl.add_method(
123 sel!(otherMouseUp:),
124 handle_view_event as extern "C" fn(&Object, Sel, id),
125 );
126 decl.add_method(
127 sel!(mouseMoved:),
128 handle_view_event as extern "C" fn(&Object, Sel, id),
129 );
130 decl.add_method(
131 sel!(mouseExited:),
132 handle_view_event as extern "C" fn(&Object, Sel, id),
133 );
134 decl.add_method(
135 sel!(mouseDragged:),
136 handle_view_event as extern "C" fn(&Object, Sel, id),
137 );
138 decl.add_method(
139 sel!(scrollWheel:),
140 handle_view_event as extern "C" fn(&Object, Sel, id),
141 );
142 decl.add_method(
143 sel!(flagsChanged:),
144 handle_view_event as extern "C" fn(&Object, Sel, id),
145 );
146 decl.add_method(
147 sel!(cancelOperation:),
148 cancel_operation as extern "C" fn(&Object, Sel, id),
149 );
150
151 decl.add_method(
152 sel!(makeBackingLayer),
153 make_backing_layer as extern "C" fn(&Object, Sel) -> id,
154 );
155
156 decl.add_protocol(Protocol::get("CALayerDelegate").unwrap());
157 decl.add_method(
158 sel!(viewDidChangeBackingProperties),
159 view_did_change_backing_properties as extern "C" fn(&Object, Sel),
160 );
161 decl.add_method(
162 sel!(setFrameSize:),
163 set_frame_size as extern "C" fn(&Object, Sel, NSSize),
164 );
165 decl.add_method(
166 sel!(displayLayer:),
167 display_layer as extern "C" fn(&Object, Sel, id),
168 );
169
170 decl.add_protocol(Protocol::get("NSTextInputClient").unwrap());
171 decl.add_method(
172 sel!(validAttributesForMarkedText),
173 valid_attributes_for_marked_text as extern "C" fn(&Object, Sel) -> id,
174 );
175 decl.add_method(
176 sel!(hasMarkedText),
177 has_marked_text as extern "C" fn(&Object, Sel) -> BOOL,
178 );
179 decl.add_method(
180 sel!(markedRange),
181 marked_range as extern "C" fn(&Object, Sel) -> NSRange,
182 );
183 decl.add_method(
184 sel!(selectedRange),
185 selected_range as extern "C" fn(&Object, Sel) -> NSRange,
186 );
187 decl.add_method(
188 sel!(firstRectForCharacterRange:actualRange:),
189 first_rect_for_character_range as extern "C" fn(&Object, Sel, NSRange, id) -> NSRect,
190 );
191 decl.add_method(
192 sel!(insertText:replacementRange:),
193 insert_text as extern "C" fn(&Object, Sel, id, NSRange),
194 );
195 decl.add_method(
196 sel!(setMarkedText:selectedRange:replacementRange:),
197 set_marked_text as extern "C" fn(&Object, Sel, id, NSRange, NSRange),
198 );
199 decl.add_method(sel!(unmarkText), unmark_text as extern "C" fn(&Object, Sel));
200 decl.add_method(
201 sel!(attributedSubstringForProposedRange:actualRange:),
202 attributed_substring_for_proposed_range
203 as extern "C" fn(&Object, Sel, NSRange, *mut c_void) -> id,
204 );
205 decl.add_method(
206 sel!(viewDidChangeEffectiveAppearance),
207 view_did_change_effective_appearance as extern "C" fn(&Object, Sel),
208 );
209
210 // Suppress beep on keystrokes with modifier keys.
211 decl.add_method(
212 sel!(doCommandBySelector:),
213 do_command_by_selector as extern "C" fn(&Object, Sel, Sel),
214 );
215
216 decl.add_method(
217 sel!(acceptsFirstMouse:),
218 accepts_first_mouse as extern "C" fn(&Object, Sel, id) -> BOOL,
219 );
220
221 decl.register()
222 };
223}
224
225pub fn convert_mouse_position(position: NSPoint, window_height: Pixels) -> Point<Pixels> {
226 point(
227 px(position.x as f32),
228 // MacOS screen coordinates are relative to bottom left
229 window_height - px(position.y as f32),
230 )
231}
232
233unsafe fn build_window_class(name: &'static str, superclass: &Class) -> *const Class {
234 let mut decl = ClassDecl::new(name, superclass).unwrap();
235 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
236 decl.add_method(sel!(dealloc), dealloc_window as extern "C" fn(&Object, Sel));
237 decl.add_method(
238 sel!(canBecomeMainWindow),
239 yes as extern "C" fn(&Object, Sel) -> BOOL,
240 );
241 decl.add_method(
242 sel!(canBecomeKeyWindow),
243 yes as extern "C" fn(&Object, Sel) -> BOOL,
244 );
245 decl.add_method(
246 sel!(windowDidResize:),
247 window_did_resize as extern "C" fn(&Object, Sel, id),
248 );
249 decl.add_method(
250 sel!(windowWillEnterFullScreen:),
251 window_will_enter_fullscreen as extern "C" fn(&Object, Sel, id),
252 );
253 decl.add_method(
254 sel!(windowWillExitFullScreen:),
255 window_will_exit_fullscreen as extern "C" fn(&Object, Sel, id),
256 );
257 decl.add_method(
258 sel!(windowDidMove:),
259 window_did_move as extern "C" fn(&Object, Sel, id),
260 );
261 decl.add_method(
262 sel!(windowDidBecomeKey:),
263 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
264 );
265 decl.add_method(
266 sel!(windowDidResignKey:),
267 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
268 );
269 decl.add_method(
270 sel!(windowShouldClose:),
271 window_should_close as extern "C" fn(&Object, Sel, id) -> BOOL,
272 );
273 decl.add_method(sel!(close), close_window as extern "C" fn(&Object, Sel));
274
275 decl.add_method(
276 sel!(draggingEntered:),
277 dragging_entered as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
278 );
279 decl.add_method(
280 sel!(draggingUpdated:),
281 dragging_updated as extern "C" fn(&Object, Sel, id) -> NSDragOperation,
282 );
283 decl.add_method(
284 sel!(draggingExited:),
285 dragging_exited as extern "C" fn(&Object, Sel, id),
286 );
287 decl.add_method(
288 sel!(performDragOperation:),
289 perform_drag_operation as extern "C" fn(&Object, Sel, id) -> BOOL,
290 );
291 decl.add_method(
292 sel!(concludeDragOperation:),
293 conclude_drag_operation as extern "C" fn(&Object, Sel, id),
294 );
295
296 decl.register()
297}
298
299///Used to track what the IME does when we send it a keystroke.
300///This is only used to handle the case where the IME mysteriously
301///swallows certain keys.
302///
303///Basically a direct copy of the approach that WezTerm uses in:
304///github.com/wez/wezterm : d5755f3e : window/src/os/macos/window.rs
305enum ImeState {
306 Continue,
307 Acted,
308 None,
309}
310
311struct InsertText {
312 replacement_range: Option<Range<usize>>,
313 text: String,
314}
315
316struct MacWindowState {
317 handle: AnyWindowHandle,
318 executor: ForegroundExecutor,
319 native_window: id,
320 renderer: MetalRenderer,
321 scene_to_render: Option<Scene>,
322 kind: WindowKind,
323 event_callback: Option<Box<dyn FnMut(InputEvent) -> bool>>,
324 activate_callback: Option<Box<dyn FnMut(bool)>>,
325 resize_callback: Option<Box<dyn FnMut(Size<Pixels>, f32)>>,
326 fullscreen_callback: Option<Box<dyn FnMut(bool)>>,
327 moved_callback: Option<Box<dyn FnMut()>>,
328 should_close_callback: Option<Box<dyn FnMut() -> bool>>,
329 close_callback: Option<Box<dyn FnOnce()>>,
330 appearance_changed_callback: Option<Box<dyn FnMut()>>,
331 input_handler: Option<Box<dyn PlatformInputHandler>>,
332 pending_key_down: Option<(KeyDownEvent, Option<InsertText>)>,
333 last_key_equivalent: Option<KeyDownEvent>,
334 synthetic_drag_counter: usize,
335 last_fresh_keydown: Option<Keystroke>,
336 traffic_light_position: Option<Point<Pixels>>,
337 previous_modifiers_changed_event: Option<InputEvent>,
338 // State tracking what the IME did after the last request
339 ime_state: ImeState,
340 // Retains the last IME Text
341 ime_text: Option<String>,
342}
343
344impl MacWindowState {
345 fn move_traffic_light(&self) {
346 if let Some(traffic_light_position) = self.traffic_light_position {
347 let titlebar_height = self.titlebar_height();
348
349 unsafe {
350 let close_button: id = msg_send![
351 self.native_window,
352 standardWindowButton: NSWindowButton::NSWindowCloseButton
353 ];
354 let min_button: id = msg_send![
355 self.native_window,
356 standardWindowButton: NSWindowButton::NSWindowMiniaturizeButton
357 ];
358 let zoom_button: id = msg_send![
359 self.native_window,
360 standardWindowButton: NSWindowButton::NSWindowZoomButton
361 ];
362
363 let mut close_button_frame: CGRect = msg_send![close_button, frame];
364 let mut min_button_frame: CGRect = msg_send![min_button, frame];
365 let mut zoom_button_frame: CGRect = msg_send![zoom_button, frame];
366 let mut origin = point(
367 traffic_light_position.x,
368 titlebar_height
369 - traffic_light_position.y
370 - px(close_button_frame.size.height as f32),
371 );
372 let button_spacing =
373 px((min_button_frame.origin.x - close_button_frame.origin.x) as f32);
374
375 close_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
376 let _: () = msg_send![close_button, setFrame: close_button_frame];
377 origin.x += button_spacing;
378
379 min_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
380 let _: () = msg_send![min_button, setFrame: min_button_frame];
381 origin.x += button_spacing;
382
383 zoom_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into());
384 let _: () = msg_send![zoom_button, setFrame: zoom_button_frame];
385 origin.x += button_spacing;
386 }
387 }
388 }
389
390 fn is_fullscreen(&self) -> bool {
391 unsafe {
392 let style_mask = self.native_window.styleMask();
393 style_mask.contains(NSWindowStyleMask::NSFullScreenWindowMask)
394 }
395 }
396
397 fn bounds(&self) -> WindowBounds {
398 unsafe {
399 if self.is_fullscreen() {
400 return WindowBounds::Fullscreen;
401 }
402
403 let frame = self.frame();
404 let screen_size = self.native_window.screen().visibleFrame().into();
405 if frame.size == screen_size {
406 WindowBounds::Maximized
407 } else {
408 WindowBounds::Fixed(frame)
409 }
410 }
411 }
412
413 fn frame(&self) -> Bounds<GlobalPixels> {
414 unsafe {
415 let frame = NSWindow::frame(self.native_window);
416 display_bounds_from_native(mem::transmute::<NSRect, CGRect>(frame))
417 }
418 }
419
420 fn content_size(&self) -> Size<Pixels> {
421 let NSSize { width, height, .. } =
422 unsafe { NSView::frame(self.native_window.contentView()) }.size;
423 size(px(width as f32), px(height as f32))
424 }
425
426 fn scale_factor(&self) -> f32 {
427 get_scale_factor(self.native_window)
428 }
429
430 fn titlebar_height(&self) -> Pixels {
431 unsafe {
432 let frame = NSWindow::frame(self.native_window);
433 let content_layout_rect: CGRect = msg_send![self.native_window, contentLayoutRect];
434 px((frame.size.height - content_layout_rect.size.height) as f32)
435 }
436 }
437
438 fn to_screen_ns_point(&self, point: Point<Pixels>) -> NSPoint {
439 unsafe {
440 let point = NSPoint::new(
441 point.x.into(),
442 (self.content_size().height - point.y).into(),
443 );
444 msg_send![self.native_window, convertPointToScreen: point]
445 }
446 }
447}
448
449unsafe impl Send for MacWindowState {}
450
451pub struct MacWindow(Arc<Mutex<MacWindowState>>);
452
453impl MacWindow {
454 pub fn open(
455 handle: AnyWindowHandle,
456 options: WindowOptions,
457 executor: ForegroundExecutor,
458 ) -> Self {
459 unsafe {
460 let pool = NSAutoreleasePool::new(nil);
461
462 let mut style_mask;
463 if let Some(titlebar) = options.titlebar.as_ref() {
464 style_mask = NSWindowStyleMask::NSClosableWindowMask
465 | NSWindowStyleMask::NSMiniaturizableWindowMask
466 | NSWindowStyleMask::NSResizableWindowMask
467 | NSWindowStyleMask::NSTitledWindowMask;
468
469 if titlebar.appears_transparent {
470 style_mask |= NSWindowStyleMask::NSFullSizeContentViewWindowMask;
471 }
472 } else {
473 style_mask = NSWindowStyleMask::NSTitledWindowMask
474 | NSWindowStyleMask::NSFullSizeContentViewWindowMask;
475 }
476
477 let native_window: id = match options.kind {
478 WindowKind::Normal => msg_send![WINDOW_CLASS, alloc],
479 WindowKind::PopUp => {
480 style_mask |= NSWindowStyleMaskNonactivatingPanel;
481 msg_send![PANEL_CLASS, alloc]
482 }
483 };
484
485 let display = options
486 .display_id
487 .and_then(|display_id| MacDisplay::all().find(|display| display.id() == display_id))
488 .unwrap_or_else(|| MacDisplay::primary());
489
490 let mut target_screen = nil;
491 let screens = NSScreen::screens(nil);
492 let count: u64 = cocoa::foundation::NSArray::count(screens);
493 for i in 0..count {
494 let screen = cocoa::foundation::NSArray::objectAtIndex(screens, i);
495 let device_description = NSScreen::deviceDescription(screen);
496 let screen_number_key: id = NSString::alloc(nil).init_str("NSScreenNumber");
497 let screen_number = device_description.objectForKey_(screen_number_key);
498 let screen_number: NSUInteger = msg_send![screen_number, unsignedIntegerValue];
499 if screen_number as u32 == display.id().0 {
500 target_screen = screen;
501 break;
502 }
503 }
504
505 let native_window = native_window.initWithContentRect_styleMask_backing_defer_screen_(
506 NSRect::new(NSPoint::new(0., 0.), NSSize::new(1024., 768.)),
507 style_mask,
508 NSBackingStoreBuffered,
509 NO,
510 target_screen,
511 );
512 assert!(!native_window.is_null());
513 let () = msg_send![
514 native_window,
515 registerForDraggedTypes:
516 NSArray::arrayWithObject(nil, NSFilenamesPboardType)
517 ];
518
519 let screen = native_window.screen();
520 match options.bounds {
521 WindowBounds::Fullscreen => {
522 native_window.toggleFullScreen_(nil);
523 }
524 WindowBounds::Maximized => {
525 native_window.setFrame_display_(screen.visibleFrame(), YES);
526 }
527 WindowBounds::Fixed(bounds) => {
528 let display_bounds = display.bounds();
529 let frame = if bounds.intersects(&display_bounds) {
530 display_bounds_to_native(bounds)
531 } else {
532 display_bounds_to_native(display_bounds)
533 };
534 native_window.setFrame_display_(mem::transmute::<CGRect, NSRect>(frame), YES);
535 }
536 }
537
538 let native_view: id = msg_send![VIEW_CLASS, alloc];
539 let native_view = NSView::init(native_view);
540
541 assert!(!native_view.is_null());
542
543 let window = Self(Arc::new(Mutex::new(MacWindowState {
544 handle,
545 executor,
546 native_window,
547 renderer: MetalRenderer::new(true),
548 scene_to_render: None,
549 kind: options.kind,
550 event_callback: None,
551 activate_callback: None,
552 resize_callback: None,
553 fullscreen_callback: None,
554 moved_callback: None,
555 should_close_callback: None,
556 close_callback: None,
557 appearance_changed_callback: None,
558 input_handler: None,
559 pending_key_down: None,
560 last_key_equivalent: None,
561 synthetic_drag_counter: 0,
562 last_fresh_keydown: None,
563 traffic_light_position: options
564 .titlebar
565 .as_ref()
566 .and_then(|titlebar| titlebar.traffic_light_position),
567 previous_modifiers_changed_event: None,
568 ime_state: ImeState::None,
569 ime_text: None,
570 })));
571
572 (*native_window).set_ivar(
573 WINDOW_STATE_IVAR,
574 Arc::into_raw(window.0.clone()) as *const c_void,
575 );
576 native_window.setDelegate_(native_window);
577 (*native_view).set_ivar(
578 WINDOW_STATE_IVAR,
579 Arc::into_raw(window.0.clone()) as *const c_void,
580 );
581
582 if let Some(title) = options
583 .titlebar
584 .as_ref()
585 .and_then(|t| t.title.as_ref().map(AsRef::as_ref))
586 {
587 native_window.setTitle_(NSString::alloc(nil).init_str(title));
588 }
589
590 native_window.setMovable_(options.is_movable as BOOL);
591
592 if options
593 .titlebar
594 .map_or(true, |titlebar| titlebar.appears_transparent)
595 {
596 native_window.setTitlebarAppearsTransparent_(YES);
597 native_window.setTitleVisibility_(NSWindowTitleVisibility::NSWindowTitleHidden);
598 }
599
600 native_view.setAutoresizingMask_(NSViewWidthSizable | NSViewHeightSizable);
601 native_view.setWantsBestResolutionOpenGLSurface_(YES);
602
603 // From winit crate: On Mojave, views automatically become layer-backed shortly after
604 // being added to a native_window. Changing the layer-backedness of a view breaks the
605 // association between the view and its associated OpenGL context. To work around this,
606 // on we explicitly make the view layer-backed up front so that AppKit doesn't do it
607 // itself and break the association with its context.
608 native_view.setWantsLayer(YES);
609 let _: () = msg_send![
610 native_view,
611 setLayerContentsRedrawPolicy: NSViewLayerContentsRedrawDuringViewResize
612 ];
613
614 native_window.setContentView_(native_view.autorelease());
615 native_window.makeFirstResponder_(native_view);
616
617 if options.center {
618 native_window.center();
619 }
620
621 match options.kind {
622 WindowKind::Normal => {
623 native_window.setLevel_(NSNormalWindowLevel);
624 native_window.setAcceptsMouseMovedEvents_(YES);
625 }
626 WindowKind::PopUp => {
627 // Use a tracking area to allow receiving MouseMoved events even when
628 // the window or application aren't active, which is often the case
629 // e.g. for notification windows.
630 let tracking_area: id = msg_send![class!(NSTrackingArea), alloc];
631 let _: () = msg_send![
632 tracking_area,
633 initWithRect: NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.))
634 options: NSTrackingMouseEnteredAndExited | NSTrackingMouseMoved | NSTrackingActiveAlways | NSTrackingInVisibleRect
635 owner: native_view
636 userInfo: nil
637 ];
638 let _: () =
639 msg_send![native_view, addTrackingArea: tracking_area.autorelease()];
640
641 native_window.setLevel_(NSPopUpWindowLevel);
642 let _: () = msg_send![
643 native_window,
644 setAnimationBehavior: NSWindowAnimationBehaviorUtilityWindow
645 ];
646 native_window.setCollectionBehavior_(
647 NSWindowCollectionBehavior::NSWindowCollectionBehaviorCanJoinAllSpaces |
648 NSWindowCollectionBehavior::NSWindowCollectionBehaviorFullScreenAuxiliary
649 );
650 }
651 }
652 if options.focus {
653 native_window.makeKeyAndOrderFront_(nil);
654 } else if options.show {
655 native_window.orderFront_(nil);
656 }
657
658 window.0.lock().move_traffic_light();
659 pool.drain();
660
661 window
662 }
663 }
664
665 pub fn main_window() -> Option<AnyWindowHandle> {
666 unsafe {
667 let app = NSApplication::sharedApplication(nil);
668 let main_window: id = msg_send![app, mainWindow];
669 if msg_send![main_window, isKindOfClass: WINDOW_CLASS] {
670 let handle = get_window_state(&*main_window).lock().handle;
671 Some(handle)
672 } else {
673 None
674 }
675 }
676 }
677}
678
679impl Drop for MacWindow {
680 fn drop(&mut self) {
681 let native_window = self.0.lock().native_window;
682 unsafe {
683 native_window.close();
684 }
685 }
686}
687
688impl PlatformWindow for MacWindow {
689 fn bounds(&self) -> WindowBounds {
690 self.0.as_ref().lock().bounds()
691 }
692
693 fn content_size(&self) -> Size<Pixels> {
694 self.0.as_ref().lock().content_size().into()
695 }
696
697 fn scale_factor(&self) -> f32 {
698 self.0.as_ref().lock().scale_factor()
699 }
700
701 fn titlebar_height(&self) -> Pixels {
702 self.0.as_ref().lock().titlebar_height()
703 }
704
705 fn appearance(&self) -> WindowAppearance {
706 unsafe {
707 let appearance: id = msg_send![self.0.lock().native_window, effectiveAppearance];
708 WindowAppearance::from_native(appearance)
709 }
710 }
711
712 fn display(&self) -> Rc<dyn PlatformDisplay> {
713 unsafe {
714 let screen = self.0.lock().native_window.screen();
715 let device_description: id = msg_send![screen, deviceDescription];
716 let screen_number: id = NSDictionary::valueForKey_(
717 device_description,
718 NSString::alloc(nil).init_str("NSScreenNumber"),
719 );
720
721 let screen_number: u32 = msg_send![screen_number, unsignedIntValue];
722
723 Rc::new(MacDisplay(screen_number))
724 }
725 }
726
727 fn mouse_position(&self) -> Point<Pixels> {
728 let position = unsafe {
729 self.0
730 .lock()
731 .native_window
732 .mouseLocationOutsideOfEventStream()
733 };
734 convert_mouse_position(position, self.content_size().height)
735 }
736
737 fn as_any_mut(&mut self) -> &mut dyn Any {
738 self
739 }
740
741 fn set_input_handler(&mut self, input_handler: Box<dyn PlatformInputHandler>) {
742 self.0.as_ref().lock().input_handler = Some(input_handler);
743 }
744
745 fn prompt(
746 &self,
747 level: WindowPromptLevel,
748 msg: &str,
749 answers: &[&str],
750 ) -> oneshot::Receiver<usize> {
751 // macOs applies overrides to modal window buttons after they are added.
752 // Two most important for this logic are:
753 // * Buttons with "Cancel" title will be displayed as the last buttons in the modal
754 // * Last button added to the modal via `addButtonWithTitle` stays focused
755 // * Focused buttons react on "space"/" " keypresses
756 // * Usage of `keyEquivalent`, `makeFirstResponder` or `setInitialFirstResponder` does not change the focus
757 //
758 // See also https://developer.apple.com/documentation/appkit/nsalert/1524532-addbuttonwithtitle#discussion
759 // ```
760 // By default, the first button has a key equivalent of Return,
761 // any button with a title of “Cancel” has a key equivalent of Escape,
762 // 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).
763 // ```
764 //
765 // To avoid situations when the last element added is "Cancel" and it gets the focus
766 // (hence stealing both ESC and Space shortcuts), we find and add one non-Cancel button
767 // last, so it gets focus and a Space shortcut.
768 // This way, "Save this file? Yes/No/Cancel"-ish modals will get all three buttons mapped with a key.
769 let latest_non_cancel_label = answers
770 .iter()
771 .enumerate()
772 .rev()
773 .find(|(_, &label)| label != "Cancel")
774 .filter(|&(label_index, _)| label_index > 0);
775
776 unsafe {
777 let alert: id = msg_send![class!(NSAlert), alloc];
778 let alert: id = msg_send![alert, init];
779 let alert_style = match level {
780 WindowPromptLevel::Info => 1,
781 WindowPromptLevel::Warning => 0,
782 WindowPromptLevel::Critical => 2,
783 };
784 let _: () = msg_send![alert, setAlertStyle: alert_style];
785 let _: () = msg_send![alert, setMessageText: ns_string(msg)];
786
787 for (ix, answer) in answers
788 .iter()
789 .enumerate()
790 .filter(|&(ix, _)| Some(ix) != latest_non_cancel_label.map(|(ix, _)| ix))
791 {
792 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
793 let _: () = msg_send![button, setTag: ix as NSInteger];
794 }
795 if let Some((ix, answer)) = latest_non_cancel_label {
796 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
797 let _: () = msg_send![button, setTag: ix as NSInteger];
798 }
799
800 let (done_tx, done_rx) = oneshot::channel();
801 let done_tx = Cell::new(Some(done_tx));
802 let block = ConcreteBlock::new(move |answer: NSInteger| {
803 if let Some(done_tx) = done_tx.take() {
804 let _ = done_tx.send(answer.try_into().unwrap());
805 }
806 });
807 let block = block.copy();
808 let native_window = self.0.lock().native_window;
809 let executor = self.0.lock().executor.clone();
810 executor
811 .spawn(async move {
812 let _: () = msg_send![
813 alert,
814 beginSheetModalForWindow: native_window
815 completionHandler: block
816 ];
817 })
818 .detach();
819
820 done_rx
821 }
822 }
823
824 fn activate(&self) {
825 let window = self.0.lock().native_window;
826 let executor = self.0.lock().executor.clone();
827 executor
828 .spawn(async move {
829 unsafe {
830 let _: () = msg_send![window, makeKeyAndOrderFront: nil];
831 }
832 })
833 .detach();
834 }
835
836 fn set_title(&mut self, title: &str) {
837 unsafe {
838 let app = NSApplication::sharedApplication(nil);
839 let window = self.0.lock().native_window;
840 let title = ns_string(title);
841 let _: () = msg_send![app, changeWindowsItem:window title:title filename:false];
842 let _: () = msg_send![window, setTitle: title];
843 self.0.lock().move_traffic_light();
844 }
845 }
846
847 fn set_edited(&mut self, edited: bool) {
848 unsafe {
849 let window = self.0.lock().native_window;
850 msg_send![window, setDocumentEdited: edited as BOOL]
851 }
852
853 // Changing the document edited state resets the traffic light position,
854 // so we have to move it again.
855 self.0.lock().move_traffic_light();
856 }
857
858 fn show_character_palette(&self) {
859 unsafe {
860 let app = NSApplication::sharedApplication(nil);
861 let window = self.0.lock().native_window;
862 let _: () = msg_send![app, orderFrontCharacterPalette: window];
863 }
864 }
865
866 fn minimize(&self) {
867 let window = self.0.lock().native_window;
868 unsafe {
869 window.miniaturize_(nil);
870 }
871 }
872
873 fn zoom(&self) {
874 let this = self.0.lock();
875 let window = this.native_window;
876 unsafe {
877 window.zoom_(nil);
878 }
879 }
880
881 fn toggle_full_screen(&self) {
882 let this = self.0.lock();
883 let window = this.native_window;
884 unsafe {
885 window.toggleFullScreen_(nil);
886 }
887 }
888
889 fn on_input(&self, callback: Box<dyn FnMut(InputEvent) -> bool>) {
890 self.0.as_ref().lock().event_callback = Some(callback);
891 }
892
893 fn on_active_status_change(&self, callback: Box<dyn FnMut(bool)>) {
894 self.0.as_ref().lock().activate_callback = Some(callback);
895 }
896
897 fn on_resize(&self, callback: Box<dyn FnMut(Size<Pixels>, f32)>) {
898 self.0.as_ref().lock().resize_callback = Some(callback);
899 }
900
901 fn on_fullscreen(&self, callback: Box<dyn FnMut(bool)>) {
902 self.0.as_ref().lock().fullscreen_callback = Some(callback);
903 }
904
905 fn on_moved(&self, callback: Box<dyn FnMut()>) {
906 self.0.as_ref().lock().moved_callback = Some(callback);
907 }
908
909 fn on_should_close(&self, callback: Box<dyn FnMut() -> bool>) {
910 self.0.as_ref().lock().should_close_callback = Some(callback);
911 }
912
913 fn on_close(&self, callback: Box<dyn FnOnce()>) {
914 self.0.as_ref().lock().close_callback = Some(callback);
915 }
916
917 fn on_appearance_changed(&self, callback: Box<dyn FnMut()>) {
918 self.0.lock().appearance_changed_callback = Some(callback);
919 }
920
921 fn is_topmost_for_position(&self, position: Point<Pixels>) -> bool {
922 let self_borrow = self.0.lock();
923 let self_handle = self_borrow.handle;
924
925 unsafe {
926 let app = NSApplication::sharedApplication(nil);
927
928 // Convert back to screen coordinates
929 let screen_point = self_borrow.to_screen_ns_point(position);
930
931 let window_number: NSInteger = msg_send![class!(NSWindow), windowNumberAtPoint:screen_point belowWindowWithWindowNumber:0];
932 let top_most_window: id = msg_send![app, windowWithWindowNumber: window_number];
933
934 let is_panel: BOOL = msg_send![top_most_window, isKindOfClass: PANEL_CLASS];
935 let is_window: BOOL = msg_send![top_most_window, isKindOfClass: WINDOW_CLASS];
936 if is_panel == YES || is_window == YES {
937 let topmost_window = get_window_state(&*top_most_window).lock().handle;
938 topmost_window == self_handle
939 } else {
940 // Someone else's window is on top
941 false
942 }
943 }
944 }
945
946 fn draw(&self, scene: Scene) {
947 let mut this = self.0.lock();
948 this.scene_to_render = Some(scene);
949 unsafe {
950 let _: () = msg_send![this.native_window.contentView(), setNeedsDisplay: YES];
951 }
952 }
953
954 fn sprite_atlas(&self) -> Arc<dyn PlatformAtlas> {
955 self.0.lock().renderer.sprite_atlas().clone()
956 }
957}
958
959fn get_scale_factor(native_window: id) -> f32 {
960 unsafe {
961 let screen: id = msg_send![native_window, screen];
962 NSScreen::backingScaleFactor(screen) as f32
963 }
964}
965
966unsafe fn get_window_state(object: &Object) -> Arc<Mutex<MacWindowState>> {
967 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
968 let rc1 = Arc::from_raw(raw as *mut Mutex<MacWindowState>);
969 let rc2 = rc1.clone();
970 mem::forget(rc1);
971 rc2
972}
973
974unsafe fn drop_window_state(object: &Object) {
975 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
976 Rc::from_raw(raw as *mut RefCell<MacWindowState>);
977}
978
979extern "C" fn yes(_: &Object, _: Sel) -> BOOL {
980 YES
981}
982
983extern "C" fn dealloc_window(this: &Object, _: Sel) {
984 unsafe {
985 drop_window_state(this);
986 let _: () = msg_send![super(this, class!(NSWindow)), dealloc];
987 }
988}
989
990extern "C" fn dealloc_view(this: &Object, _: Sel) {
991 unsafe {
992 drop_window_state(this);
993 let _: () = msg_send![super(this, class!(NSView)), dealloc];
994 }
995}
996
997extern "C" fn handle_key_equivalent(this: &Object, _: Sel, native_event: id) -> BOOL {
998 handle_key_event(this, native_event, true)
999}
1000
1001extern "C" fn handle_key_down(this: &Object, _: Sel, native_event: id) {
1002 handle_key_event(this, native_event, false);
1003}
1004
1005extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent: bool) -> BOOL {
1006 let window_state = unsafe { get_window_state(this) };
1007 let mut lock = window_state.as_ref().lock();
1008
1009 let window_height = lock.content_size().height;
1010 let event = unsafe { InputEvent::from_native(native_event, Some(window_height)) };
1011
1012 if let Some(InputEvent::KeyDown(event)) = event {
1013 // For certain keystrokes, macOS will first dispatch a "key equivalent" event.
1014 // If that event isn't handled, it will then dispatch a "key down" event. GPUI
1015 // makes no distinction between these two types of events, so we need to ignore
1016 // the "key down" event if we've already just processed its "key equivalent" version.
1017 if key_equivalent {
1018 lock.last_key_equivalent = Some(event.clone());
1019 } else if lock.last_key_equivalent.take().as_ref() == Some(&event) {
1020 return NO;
1021 }
1022
1023 let keydown = event.keystroke.clone();
1024 let fn_modifier = keydown.modifiers.function;
1025 // Ignore events from held-down keys after some of the initially-pressed keys
1026 // were released.
1027 if event.is_held {
1028 if lock.last_fresh_keydown.as_ref() != Some(&keydown) {
1029 return YES;
1030 }
1031 } else {
1032 lock.last_fresh_keydown = Some(keydown);
1033 }
1034 lock.pending_key_down = Some((event, None));
1035 drop(lock);
1036
1037 // Send the event to the input context for IME handling, unless the `fn` modifier is
1038 // being pressed.
1039 if !fn_modifier {
1040 unsafe {
1041 let input_context: id = msg_send![this, inputContext];
1042 let _: BOOL = msg_send![input_context, handleEvent: native_event];
1043 }
1044 }
1045
1046 let mut handled = false;
1047 let mut lock = window_state.lock();
1048 let ime_text = lock.ime_text.clone();
1049 if let Some((event, insert_text)) = lock.pending_key_down.take() {
1050 let is_held = event.is_held;
1051 if let Some(mut callback) = lock.event_callback.take() {
1052 drop(lock);
1053
1054 let is_composing =
1055 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1056 .flatten()
1057 .is_some();
1058 if !is_composing {
1059 // if the IME has changed the key, we'll first emit an event with the character
1060 // generated by the IME system; then fallback to the keystroke if that is not
1061 // handled.
1062 // cases that we have working:
1063 // - " on a brazillian layout by typing <quote><space>
1064 // - ctrl-` on a brazillian layout by typing <ctrl-`>
1065 // - $ on a czech QWERTY layout by typing <alt-4>
1066 // - 4 on a czech QWERTY layout by typing <shift-4>
1067 // - ctrl-4 on a czech QWERTY layout by typing <ctrl-alt-4> (or <ctrl-shift-4>)
1068 if ime_text.is_some() && ime_text.as_ref() != Some(&event.keystroke.key) {
1069 let event_with_ime_text = KeyDownEvent {
1070 is_held: false,
1071 keystroke: Keystroke {
1072 // we match ctrl because some use-cases need it.
1073 // we don't match alt because it's often used to generate the optional character
1074 // we don't match shift because we're not here with letters (usually)
1075 // we don't match cmd/fn because they don't seem to use IME
1076 modifiers: Default::default(),
1077 key: ime_text.clone().unwrap(),
1078 ime_key: None, // todo!("handle IME key")
1079 },
1080 };
1081 handled = callback(InputEvent::KeyDown(event_with_ime_text));
1082 }
1083 if !handled {
1084 // empty key happens when you type a deadkey in input composition.
1085 // (e.g. on a brazillian keyboard typing quote is a deadkey)
1086 if !event.keystroke.key.is_empty() {
1087 handled = callback(InputEvent::KeyDown(event));
1088 }
1089 }
1090 }
1091
1092 if !handled {
1093 if let Some(insert) = insert_text {
1094 handled = true;
1095 with_input_handler(this, |input_handler| {
1096 input_handler
1097 .replace_text_in_range(insert.replacement_range, &insert.text)
1098 });
1099 } else if !is_composing && is_held {
1100 if let Some(last_insert_text) = ime_text {
1101 //MacOS IME is a bit funky, and even when you've told it there's nothing to
1102 //inter it will still swallow certain keys (e.g. 'f', 'j') and not others
1103 //(e.g. 'n'). This is a problem for certain kinds of views, like the terminal
1104 with_input_handler(this, |input_handler| {
1105 if input_handler.selected_text_range().is_none() {
1106 handled = true;
1107 input_handler.replace_text_in_range(None, &last_insert_text)
1108 }
1109 });
1110 }
1111 }
1112 }
1113
1114 window_state.lock().event_callback = Some(callback);
1115 }
1116 } else {
1117 handled = true;
1118 }
1119
1120 handled as BOOL
1121 } else {
1122 NO
1123 }
1124}
1125
1126extern "C" fn handle_view_event(this: &Object, _: Sel, native_event: id) {
1127 let window_state = unsafe { get_window_state(this) };
1128 let weak_window_state = Arc::downgrade(&window_state);
1129 let mut lock = window_state.as_ref().lock();
1130 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1131
1132 let window_height = lock.content_size().height;
1133 let event = unsafe { InputEvent::from_native(native_event, Some(window_height)) };
1134
1135 if let Some(mut event) = event {
1136 let synthesized_second_event = match &mut event {
1137 InputEvent::MouseDown(
1138 event @ MouseDownEvent {
1139 button: MouseButton::Left,
1140 modifiers: Modifiers { control: true, .. },
1141 ..
1142 },
1143 ) => {
1144 *event = MouseDownEvent {
1145 button: MouseButton::Right,
1146 modifiers: Modifiers {
1147 control: false,
1148 ..event.modifiers
1149 },
1150 click_count: 1,
1151 ..*event
1152 };
1153
1154 Some(InputEvent::MouseDown(MouseDownEvent {
1155 button: MouseButton::Right,
1156 ..*event
1157 }))
1158 }
1159
1160 // Because we map a ctrl-left_down to a right_down -> right_up let's ignore
1161 // the ctrl-left_up to avoid having a mismatch in button down/up events if the
1162 // user is still holding ctrl when releasing the left mouse button
1163 InputEvent::MouseUp(MouseUpEvent {
1164 button: MouseButton::Left,
1165 modifiers: Modifiers { control: true, .. },
1166 ..
1167 }) => {
1168 lock.synthetic_drag_counter += 1;
1169 return;
1170 }
1171
1172 _ => None,
1173 };
1174
1175 match &event {
1176 InputEvent::MouseMove(
1177 event @ MouseMoveEvent {
1178 pressed_button: Some(_),
1179 ..
1180 },
1181 ) => {
1182 lock.synthetic_drag_counter += 1;
1183 let executor = lock.executor.clone();
1184 executor
1185 .spawn(synthetic_drag(
1186 weak_window_state,
1187 lock.synthetic_drag_counter,
1188 event.clone(),
1189 ))
1190 .detach();
1191 }
1192
1193 InputEvent::MouseMove(_) if !(is_active || lock.kind == WindowKind::PopUp) => return,
1194
1195 InputEvent::MouseUp(MouseUpEvent {
1196 button: MouseButton::Left,
1197 ..
1198 }) => {
1199 lock.synthetic_drag_counter += 1;
1200 }
1201
1202 InputEvent::ModifiersChanged(ModifiersChangedEvent { modifiers }) => {
1203 // Only raise modifiers changed event when they have actually changed
1204 if let Some(InputEvent::ModifiersChanged(ModifiersChangedEvent {
1205 modifiers: prev_modifiers,
1206 })) = &lock.previous_modifiers_changed_event
1207 {
1208 if prev_modifiers == modifiers {
1209 return;
1210 }
1211 }
1212
1213 lock.previous_modifiers_changed_event = Some(event.clone());
1214 }
1215
1216 _ => {}
1217 }
1218
1219 if let Some(mut callback) = lock.event_callback.take() {
1220 drop(lock);
1221 callback(event);
1222 if let Some(event) = synthesized_second_event {
1223 callback(event);
1224 }
1225 window_state.lock().event_callback = Some(callback);
1226 }
1227 }
1228}
1229
1230// Allows us to receive `cmd-.` (the shortcut for closing a dialog)
1231// https://bugs.eclipse.org/bugs/show_bug.cgi?id=300620#c6
1232extern "C" fn cancel_operation(this: &Object, _sel: Sel, _sender: id) {
1233 let window_state = unsafe { get_window_state(this) };
1234 let mut lock = window_state.as_ref().lock();
1235
1236 let keystroke = Keystroke {
1237 modifiers: Default::default(),
1238 key: ".".into(),
1239 ime_key: None,
1240 };
1241 let event = InputEvent::KeyDown(KeyDownEvent {
1242 keystroke: keystroke.clone(),
1243 is_held: false,
1244 });
1245
1246 lock.last_fresh_keydown = Some(keystroke);
1247 if let Some(mut callback) = lock.event_callback.take() {
1248 drop(lock);
1249 callback(event);
1250 window_state.lock().event_callback = Some(callback);
1251 }
1252}
1253
1254extern "C" fn window_did_resize(this: &Object, _: Sel, _: id) {
1255 let window_state = unsafe { get_window_state(this) };
1256 window_state.as_ref().lock().move_traffic_light();
1257}
1258
1259extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) {
1260 window_fullscreen_changed(this, true);
1261}
1262
1263extern "C" fn window_will_exit_fullscreen(this: &Object, _: Sel, _: id) {
1264 window_fullscreen_changed(this, false);
1265}
1266
1267fn window_fullscreen_changed(this: &Object, is_fullscreen: bool) {
1268 let window_state = unsafe { get_window_state(this) };
1269 let mut lock = window_state.as_ref().lock();
1270 if let Some(mut callback) = lock.fullscreen_callback.take() {
1271 drop(lock);
1272 callback(is_fullscreen);
1273 window_state.lock().fullscreen_callback = Some(callback);
1274 }
1275}
1276
1277extern "C" fn window_did_move(this: &Object, _: Sel, _: id) {
1278 let window_state = unsafe { get_window_state(this) };
1279 let mut lock = window_state.as_ref().lock();
1280 if let Some(mut callback) = lock.moved_callback.take() {
1281 drop(lock);
1282 callback();
1283 window_state.lock().moved_callback = Some(callback);
1284 }
1285}
1286
1287extern "C" fn window_did_change_key_status(this: &Object, selector: Sel, _: id) {
1288 let window_state = unsafe { get_window_state(this) };
1289 let lock = window_state.lock();
1290 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1291
1292 // When opening a pop-up while the application isn't active, Cocoa sends a spurious
1293 // `windowDidBecomeKey` message to the previous key window even though that window
1294 // isn't actually key. This causes a bug if the application is later activated while
1295 // the pop-up is still open, making it impossible to activate the previous key window
1296 // even if the pop-up gets closed. The only way to activate it again is to de-activate
1297 // the app and re-activate it, which is a pretty bad UX.
1298 // The following code detects the spurious event and invokes `resignKeyWindow`:
1299 // in theory, we're not supposed to invoke this method manually but it balances out
1300 // the spurious `becomeKeyWindow` event and helps us work around that bug.
1301 if selector == sel!(windowDidBecomeKey:) {
1302 if !is_active {
1303 unsafe {
1304 let _: () = msg_send![lock.native_window, resignKeyWindow];
1305 return;
1306 }
1307 }
1308 }
1309
1310 let executor = lock.executor.clone();
1311 drop(lock);
1312 executor
1313 .spawn(async move {
1314 let mut lock = window_state.as_ref().lock();
1315 if let Some(mut callback) = lock.activate_callback.take() {
1316 drop(lock);
1317 callback(is_active);
1318 window_state.lock().activate_callback = Some(callback);
1319 };
1320 })
1321 .detach();
1322}
1323
1324extern "C" fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
1325 let window_state = unsafe { get_window_state(this) };
1326 let mut lock = window_state.as_ref().lock();
1327 if let Some(mut callback) = lock.should_close_callback.take() {
1328 drop(lock);
1329 let should_close = callback();
1330 window_state.lock().should_close_callback = Some(callback);
1331 should_close as BOOL
1332 } else {
1333 YES
1334 }
1335}
1336
1337extern "C" fn close_window(this: &Object, _: Sel) {
1338 unsafe {
1339 let close_callback = {
1340 let window_state = get_window_state(this);
1341 window_state
1342 .as_ref()
1343 .try_lock()
1344 .and_then(|mut window_state| window_state.close_callback.take())
1345 };
1346
1347 if let Some(callback) = close_callback {
1348 callback();
1349 }
1350
1351 let _: () = msg_send![super(this, class!(NSWindow)), close];
1352 }
1353}
1354
1355extern "C" fn make_backing_layer(this: &Object, _: Sel) -> id {
1356 let window_state = unsafe { get_window_state(this) };
1357 let window_state = window_state.as_ref().lock();
1358 window_state.renderer.layer().as_ptr() as id
1359}
1360
1361extern "C" fn view_did_change_backing_properties(this: &Object, _: Sel) {
1362 let window_state = unsafe { get_window_state(this) };
1363 let mut lock = window_state.as_ref().lock();
1364
1365 unsafe {
1366 let scale_factor = lock.scale_factor() as f64;
1367 let size = lock.content_size();
1368 let drawable_size: NSSize = NSSize {
1369 width: f64::from(size.width) * scale_factor,
1370 height: f64::from(size.height) * scale_factor,
1371 };
1372
1373 let _: () = msg_send![
1374 lock.renderer.layer(),
1375 setContentsScale: scale_factor
1376 ];
1377 let _: () = msg_send![
1378 lock.renderer.layer(),
1379 setDrawableSize: drawable_size
1380 ];
1381 }
1382
1383 if let Some(mut callback) = lock.resize_callback.take() {
1384 let content_size = lock.content_size();
1385 let scale_factor = lock.scale_factor();
1386 drop(lock);
1387 callback(content_size, scale_factor);
1388 window_state.as_ref().lock().resize_callback = Some(callback);
1389 };
1390}
1391
1392extern "C" fn set_frame_size(this: &Object, _: Sel, size: NSSize) {
1393 let window_state = unsafe { get_window_state(this) };
1394 let lock = window_state.as_ref().lock();
1395
1396 if lock.content_size() == size.into() {
1397 return;
1398 }
1399
1400 unsafe {
1401 let _: () = msg_send![super(this, class!(NSView)), setFrameSize: size];
1402 }
1403
1404 let scale_factor = lock.scale_factor() as f64;
1405 let drawable_size: NSSize = NSSize {
1406 width: size.width * scale_factor,
1407 height: size.height * scale_factor,
1408 };
1409
1410 unsafe {
1411 let _: () = msg_send![
1412 lock.renderer.layer(),
1413 setDrawableSize: drawable_size
1414 ];
1415 }
1416
1417 drop(lock);
1418 let mut lock = window_state.lock();
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.lock().resize_callback = Some(callback);
1425 };
1426}
1427
1428extern "C" fn display_layer(this: &Object, _: Sel, _: id) {
1429 unsafe {
1430 let window_state = get_window_state(this);
1431 let mut window_state = window_state.as_ref().lock();
1432 if let Some(scene) = window_state.scene_to_render.take() {
1433 window_state.renderer.draw(&scene);
1434 }
1435 }
1436}
1437
1438extern "C" fn valid_attributes_for_marked_text(_: &Object, _: Sel) -> id {
1439 unsafe { msg_send![class!(NSArray), array] }
1440}
1441
1442extern "C" fn has_marked_text(this: &Object, _: Sel) -> BOOL {
1443 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1444 .flatten()
1445 .is_some() as BOOL
1446}
1447
1448extern "C" fn marked_range(this: &Object, _: Sel) -> NSRange {
1449 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1450 .flatten()
1451 .map_or(NSRange::invalid(), |range| range.into())
1452}
1453
1454extern "C" fn selected_range(this: &Object, _: Sel) -> NSRange {
1455 with_input_handler(this, |input_handler| input_handler.selected_text_range())
1456 .flatten()
1457 .map_or(NSRange::invalid(), |range| range.into())
1458}
1459
1460extern "C" fn first_rect_for_character_range(
1461 this: &Object,
1462 _: Sel,
1463 range: NSRange,
1464 _: id,
1465) -> NSRect {
1466 let frame = unsafe {
1467 let window = get_window_state(this).lock().native_window;
1468 NSView::frame(window)
1469 };
1470 with_input_handler(this, |input_handler| {
1471 input_handler.bounds_for_range(range.to_range()?)
1472 })
1473 .flatten()
1474 .map_or(
1475 NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)),
1476 |bounds| {
1477 NSRect::new(
1478 NSPoint::new(
1479 frame.origin.x + bounds.origin.x as f64,
1480 frame.origin.y + frame.size.height - bounds.origin.y as f64,
1481 ),
1482 NSSize::new(bounds.size.width as f64, bounds.size.height as f64),
1483 )
1484 },
1485 )
1486}
1487
1488extern "C" fn insert_text(this: &Object, _: Sel, text: id, replacement_range: NSRange) {
1489 unsafe {
1490 let window_state = get_window_state(this);
1491 let mut lock = window_state.lock();
1492 let pending_key_down = lock.pending_key_down.take();
1493 drop(lock);
1494
1495 let is_attributed_string: BOOL =
1496 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1497 let text: id = if is_attributed_string == YES {
1498 msg_send![text, string]
1499 } else {
1500 text
1501 };
1502 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1503 .to_str()
1504 .unwrap();
1505 let replacement_range = replacement_range.to_range();
1506
1507 window_state.lock().ime_text = Some(text.to_string());
1508 window_state.lock().ime_state = ImeState::Acted;
1509
1510 let is_composing =
1511 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1512 .flatten()
1513 .is_some();
1514
1515 if is_composing || text.chars().count() > 1 || pending_key_down.is_none() {
1516 with_input_handler(this, |input_handler| {
1517 input_handler.replace_text_in_range(replacement_range, text)
1518 });
1519 } else {
1520 let mut pending_key_down = pending_key_down.unwrap();
1521 pending_key_down.1 = Some(InsertText {
1522 replacement_range,
1523 text: text.to_string(),
1524 });
1525 window_state.lock().pending_key_down = Some(pending_key_down);
1526 }
1527 }
1528}
1529
1530extern "C" fn set_marked_text(
1531 this: &Object,
1532 _: Sel,
1533 text: id,
1534 selected_range: NSRange,
1535 replacement_range: NSRange,
1536) {
1537 unsafe {
1538 let window_state = get_window_state(this);
1539 window_state.lock().pending_key_down.take();
1540
1541 let is_attributed_string: BOOL =
1542 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1543 let text: id = if is_attributed_string == YES {
1544 msg_send![text, string]
1545 } else {
1546 text
1547 };
1548 let selected_range = selected_range.to_range();
1549 let replacement_range = replacement_range.to_range();
1550 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1551 .to_str()
1552 .unwrap();
1553
1554 window_state.lock().ime_state = ImeState::Acted;
1555 window_state.lock().ime_text = Some(text.to_string());
1556
1557 with_input_handler(this, |input_handler| {
1558 input_handler.replace_and_mark_text_in_range(replacement_range, text, selected_range);
1559 });
1560 }
1561}
1562
1563extern "C" fn unmark_text(this: &Object, _: Sel) {
1564 unsafe {
1565 let state = get_window_state(this);
1566 let mut borrow = state.lock();
1567 borrow.ime_state = ImeState::Acted;
1568 borrow.ime_text.take();
1569 }
1570
1571 with_input_handler(this, |input_handler| input_handler.unmark_text());
1572}
1573
1574extern "C" fn attributed_substring_for_proposed_range(
1575 this: &Object,
1576 _: Sel,
1577 range: NSRange,
1578 _actual_range: *mut c_void,
1579) -> id {
1580 with_input_handler(this, |input_handler| {
1581 let range = range.to_range()?;
1582 if range.is_empty() {
1583 return None;
1584 }
1585
1586 let selected_text = input_handler.text_for_range(range)?;
1587 unsafe {
1588 let string: id = msg_send![class!(NSAttributedString), alloc];
1589 let string: id = msg_send![string, initWithString: ns_string(&selected_text)];
1590 Some(string)
1591 }
1592 })
1593 .flatten()
1594 .unwrap_or(nil)
1595}
1596
1597extern "C" fn do_command_by_selector(this: &Object, _: Sel, _: Sel) {
1598 unsafe {
1599 let state = get_window_state(this);
1600 let mut borrow = state.lock();
1601 borrow.ime_state = ImeState::Continue;
1602 borrow.ime_text.take();
1603 }
1604}
1605
1606extern "C" fn view_did_change_effective_appearance(this: &Object, _: Sel) {
1607 unsafe {
1608 let state = get_window_state(this);
1609 let mut lock = state.as_ref().lock();
1610 if let Some(mut callback) = lock.appearance_changed_callback.take() {
1611 drop(lock);
1612 callback();
1613 state.lock().appearance_changed_callback = Some(callback);
1614 }
1615 }
1616}
1617
1618extern "C" fn accepts_first_mouse(this: &Object, _: Sel, _: id) -> BOOL {
1619 unsafe {
1620 let state = get_window_state(this);
1621 let lock = state.as_ref().lock();
1622 return if lock.kind == WindowKind::PopUp {
1623 YES
1624 } else {
1625 NO
1626 };
1627 }
1628}
1629
1630extern "C" fn dragging_entered(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1631 let window_state = unsafe { get_window_state(this) };
1632 if send_new_event(&window_state, {
1633 let position = drag_event_position(&window_state, dragging_info);
1634 let paths = external_paths_from_event(dragging_info);
1635 InputEvent::FileDrop(FileDropEvent::Entered {
1636 position,
1637 files: paths,
1638 })
1639 }) {
1640 NSDragOperationCopy
1641 } else {
1642 NSDragOperationNone
1643 }
1644}
1645
1646extern "C" fn dragging_updated(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1647 let window_state = unsafe { get_window_state(this) };
1648 let position = drag_event_position(&window_state, dragging_info);
1649 if send_new_event(
1650 &window_state,
1651 InputEvent::FileDrop(FileDropEvent::Pending { position }),
1652 ) {
1653 NSDragOperationCopy
1654 } else {
1655 NSDragOperationNone
1656 }
1657}
1658
1659extern "C" fn dragging_exited(this: &Object, _: Sel, _: id) {
1660 let window_state = unsafe { get_window_state(this) };
1661 send_new_event(&window_state, InputEvent::FileDrop(FileDropEvent::Exited));
1662}
1663
1664extern "C" fn perform_drag_operation(this: &Object, _: Sel, dragging_info: id) -> BOOL {
1665 let window_state = unsafe { get_window_state(this) };
1666 let position = drag_event_position(&window_state, dragging_info);
1667 if send_new_event(
1668 &window_state,
1669 InputEvent::FileDrop(FileDropEvent::Submit { position }),
1670 ) {
1671 YES
1672 } else {
1673 NO
1674 }
1675}
1676
1677fn external_paths_from_event(dragging_info: *mut Object) -> ExternalPaths {
1678 let mut paths = SmallVec::new();
1679 let pasteboard: id = unsafe { msg_send![dragging_info, draggingPasteboard] };
1680 let filenames = unsafe { NSPasteboard::propertyListForType(pasteboard, NSFilenamesPboardType) };
1681 for file in unsafe { filenames.iter() } {
1682 let path = unsafe {
1683 let f = NSString::UTF8String(file);
1684 CStr::from_ptr(f).to_string_lossy().into_owned()
1685 };
1686 paths.push(PathBuf::from(path))
1687 }
1688 ExternalPaths(paths)
1689}
1690
1691extern "C" fn conclude_drag_operation(this: &Object, _: Sel, _: id) {
1692 let window_state = unsafe { get_window_state(this) };
1693 send_new_event(&window_state, InputEvent::FileDrop(FileDropEvent::Exited));
1694}
1695
1696async fn synthetic_drag(
1697 window_state: Weak<Mutex<MacWindowState>>,
1698 drag_id: usize,
1699 event: MouseMoveEvent,
1700) {
1701 loop {
1702 Timer::after(Duration::from_millis(16)).await;
1703 if let Some(window_state) = window_state.upgrade() {
1704 let mut lock = window_state.lock();
1705 if lock.synthetic_drag_counter == drag_id {
1706 if let Some(mut callback) = lock.event_callback.take() {
1707 drop(lock);
1708 callback(InputEvent::MouseMove(event.clone()));
1709 window_state.lock().event_callback = Some(callback);
1710 }
1711 } else {
1712 break;
1713 }
1714 }
1715 }
1716}
1717
1718fn send_new_event(window_state_lock: &Mutex<MacWindowState>, e: InputEvent) -> bool {
1719 let window_state = window_state_lock.lock().event_callback.take();
1720 if let Some(mut callback) = window_state {
1721 callback(e);
1722 window_state_lock.lock().event_callback = Some(callback);
1723 true
1724 } else {
1725 false
1726 }
1727}
1728
1729fn drag_event_position(window_state: &Mutex<MacWindowState>, dragging_info: id) -> Point<Pixels> {
1730 let drag_location: NSPoint = unsafe { msg_send![dragging_info, draggingLocation] };
1731 convert_mouse_position(drag_location, window_state.lock().content_size().height)
1732}
1733
1734fn with_input_handler<F, R>(window: &Object, f: F) -> Option<R>
1735where
1736 F: FnOnce(&mut dyn PlatformInputHandler) -> R,
1737{
1738 let window_state = unsafe { get_window_state(window) };
1739 let mut lock = window_state.as_ref().lock();
1740 if let Some(mut input_handler) = lock.input_handler.take() {
1741 drop(lock);
1742 let result = f(input_handler.as_mut());
1743 window_state.lock().input_handler = Some(input_handler);
1744 Some(result)
1745 } else {
1746 None
1747 }
1748}