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