1use super::{display_bounds_from_native, ns_string, MacDisplay, MetalRenderer, NSRange};
2use crate::{
3 display_bounds_to_native, point, px, size, AnyWindowHandle, Bounds, Executor, ExternalPaths,
4 FileDropEvent, GlobalPixels, InputEvent, KeyDownEvent, Keystroke, Modifiers,
5 ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, Pixels,
6 PlatformAtlas, PlatformDisplay, PlatformInputHandler, PlatformWindow, Point, Scene, Size,
7 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: Executor,
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(handle: AnyWindowHandle, options: WindowOptions, executor: Executor) -> Self {
455 unsafe {
456 let pool = NSAutoreleasePool::new(nil);
457
458 let mut style_mask;
459 if let Some(titlebar) = options.titlebar.as_ref() {
460 style_mask = NSWindowStyleMask::NSClosableWindowMask
461 | NSWindowStyleMask::NSMiniaturizableWindowMask
462 | NSWindowStyleMask::NSResizableWindowMask
463 | NSWindowStyleMask::NSTitledWindowMask;
464
465 if titlebar.appears_transparent {
466 style_mask |= NSWindowStyleMask::NSFullSizeContentViewWindowMask;
467 }
468 } else {
469 style_mask = NSWindowStyleMask::NSTitledWindowMask
470 | NSWindowStyleMask::NSFullSizeContentViewWindowMask;
471 }
472
473 let native_window: id = match options.kind {
474 WindowKind::Normal => msg_send![WINDOW_CLASS, alloc],
475 WindowKind::PopUp => {
476 style_mask |= NSWindowStyleMaskNonactivatingPanel;
477 msg_send![PANEL_CLASS, alloc]
478 }
479 };
480
481 let display = options
482 .display_id
483 .and_then(|display_id| MacDisplay::all().find(|display| display.id() == display_id))
484 .unwrap_or_else(|| MacDisplay::primary());
485
486 let mut target_screen = nil;
487 let screens = NSScreen::screens(nil);
488 let count: u64 = cocoa::foundation::NSArray::count(screens);
489 for i in 0..count {
490 let screen = cocoa::foundation::NSArray::objectAtIndex(screens, i);
491 let device_description = NSScreen::deviceDescription(screen);
492 let screen_number_key: id = NSString::alloc(nil).init_str("NSScreenNumber");
493 let screen_number = device_description.objectForKey_(screen_number_key);
494 let screen_number: NSUInteger = msg_send![screen_number, unsignedIntegerValue];
495 if screen_number as u32 == display.id().0 {
496 target_screen = screen;
497 break;
498 }
499 }
500
501 let native_window = native_window.initWithContentRect_styleMask_backing_defer_screen_(
502 NSRect::new(NSPoint::new(0., 0.), NSSize::new(1024., 768.)),
503 style_mask,
504 NSBackingStoreBuffered,
505 NO,
506 target_screen,
507 );
508 assert!(!native_window.is_null());
509 let () = msg_send![
510 native_window,
511 registerForDraggedTypes:
512 NSArray::arrayWithObject(nil, NSFilenamesPboardType)
513 ];
514
515 let screen = native_window.screen();
516 match options.bounds {
517 WindowBounds::Fullscreen => {
518 native_window.toggleFullScreen_(nil);
519 }
520 WindowBounds::Maximized => {
521 native_window.setFrame_display_(screen.visibleFrame(), YES);
522 }
523 WindowBounds::Fixed(bounds) => {
524 let display_bounds = display.bounds();
525 let frame = if bounds.intersects(&display_bounds) {
526 display_bounds_to_native(bounds)
527 } else {
528 display_bounds_to_native(display_bounds)
529 };
530 native_window.setFrame_display_(mem::transmute::<CGRect, NSRect>(frame), YES);
531 }
532 }
533
534 let native_view: id = msg_send![VIEW_CLASS, alloc];
535 let native_view = NSView::init(native_view);
536
537 assert!(!native_view.is_null());
538
539 let window = Self(Arc::new(Mutex::new(MacWindowState {
540 handle,
541 executor,
542 native_window,
543 renderer: MetalRenderer::new(true),
544 scene_to_render: None,
545 kind: options.kind,
546 event_callback: None,
547 activate_callback: None,
548 resize_callback: None,
549 fullscreen_callback: None,
550 moved_callback: None,
551 should_close_callback: None,
552 close_callback: None,
553 appearance_changed_callback: None,
554 input_handler: None,
555 pending_key_down: None,
556 last_key_equivalent: None,
557 synthetic_drag_counter: 0,
558 last_fresh_keydown: None,
559 traffic_light_position: options
560 .titlebar
561 .as_ref()
562 .and_then(|titlebar| titlebar.traffic_light_position),
563 previous_modifiers_changed_event: None,
564 ime_state: ImeState::None,
565 ime_text: None,
566 })));
567
568 (*native_window).set_ivar(
569 WINDOW_STATE_IVAR,
570 Arc::into_raw(window.0.clone()) as *const c_void,
571 );
572 native_window.setDelegate_(native_window);
573 (*native_view).set_ivar(
574 WINDOW_STATE_IVAR,
575 Arc::into_raw(window.0.clone()) as *const c_void,
576 );
577
578 if let Some(title) = options
579 .titlebar
580 .as_ref()
581 .and_then(|t| t.title.as_ref().map(AsRef::as_ref))
582 {
583 native_window.setTitle_(NSString::alloc(nil).init_str(title));
584 }
585
586 native_window.setMovable_(options.is_movable as BOOL);
587
588 if options
589 .titlebar
590 .map_or(true, |titlebar| titlebar.appears_transparent)
591 {
592 native_window.setTitlebarAppearsTransparent_(YES);
593 native_window.setTitleVisibility_(NSWindowTitleVisibility::NSWindowTitleHidden);
594 }
595
596 native_view.setAutoresizingMask_(NSViewWidthSizable | NSViewHeightSizable);
597 native_view.setWantsBestResolutionOpenGLSurface_(YES);
598
599 // From winit crate: On Mojave, views automatically become layer-backed shortly after
600 // being added to a native_window. Changing the layer-backedness of a view breaks the
601 // association between the view and its associated OpenGL context. To work around this,
602 // on we explicitly make the view layer-backed up front so that AppKit doesn't do it
603 // itself and break the association with its context.
604 native_view.setWantsLayer(YES);
605 let _: () = msg_send![
606 native_view,
607 setLayerContentsRedrawPolicy: NSViewLayerContentsRedrawDuringViewResize
608 ];
609
610 native_window.setContentView_(native_view.autorelease());
611 native_window.makeFirstResponder_(native_view);
612
613 if options.center {
614 native_window.center();
615 }
616
617 match options.kind {
618 WindowKind::Normal => {
619 native_window.setLevel_(NSNormalWindowLevel);
620 native_window.setAcceptsMouseMovedEvents_(YES);
621 }
622 WindowKind::PopUp => {
623 // Use a tracking area to allow receiving MouseMoved events even when
624 // the window or application aren't active, which is often the case
625 // e.g. for notification windows.
626 let tracking_area: id = msg_send![class!(NSTrackingArea), alloc];
627 let _: () = msg_send![
628 tracking_area,
629 initWithRect: NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.))
630 options: NSTrackingMouseEnteredAndExited | NSTrackingMouseMoved | NSTrackingActiveAlways | NSTrackingInVisibleRect
631 owner: native_view
632 userInfo: nil
633 ];
634 let _: () =
635 msg_send![native_view, addTrackingArea: tracking_area.autorelease()];
636
637 native_window.setLevel_(NSPopUpWindowLevel);
638 let _: () = msg_send![
639 native_window,
640 setAnimationBehavior: NSWindowAnimationBehaviorUtilityWindow
641 ];
642 native_window.setCollectionBehavior_(
643 NSWindowCollectionBehavior::NSWindowCollectionBehaviorCanJoinAllSpaces |
644 NSWindowCollectionBehavior::NSWindowCollectionBehaviorFullScreenAuxiliary
645 );
646 }
647 }
648 if options.focus {
649 native_window.makeKeyAndOrderFront_(nil);
650 } else if options.show {
651 native_window.orderFront_(nil);
652 }
653
654 window.0.lock().move_traffic_light();
655 pool.drain();
656
657 window
658 }
659 }
660
661 pub fn main_window() -> Option<AnyWindowHandle> {
662 unsafe {
663 let app = NSApplication::sharedApplication(nil);
664 let main_window: id = msg_send![app, mainWindow];
665 if msg_send![main_window, isKindOfClass: WINDOW_CLASS] {
666 let handle = get_window_state(&*main_window).lock().handle;
667 Some(handle)
668 } else {
669 None
670 }
671 }
672 }
673}
674
675impl Drop for MacWindow {
676 fn drop(&mut self) {
677 let this = self.0.clone();
678 let executor = self.0.lock().executor.clone();
679 executor
680 .run_on_main(move || unsafe {
681 this.lock().native_window.close();
682 })
683 .detach();
684 }
685}
686
687impl PlatformWindow for MacWindow {
688 fn bounds(&self) -> WindowBounds {
689 self.0.as_ref().lock().bounds()
690 }
691
692 fn content_size(&self) -> Size<Pixels> {
693 self.0.as_ref().lock().content_size().into()
694 }
695
696 fn scale_factor(&self) -> f32 {
697 self.0.as_ref().lock().scale_factor()
698 }
699
700 fn titlebar_height(&self) -> Pixels {
701 self.0.as_ref().lock().titlebar_height()
702 }
703
704 fn appearance(&self) -> WindowAppearance {
705 unsafe {
706 let appearance: id = msg_send![self.0.lock().native_window, effectiveAppearance];
707 WindowAppearance::from_native(appearance)
708 }
709 }
710
711 fn display(&self) -> Rc<dyn PlatformDisplay> {
712 unsafe {
713 let screen = self.0.lock().native_window.screen();
714 let device_description: id = msg_send![screen, deviceDescription];
715 let screen_number: id = NSDictionary::valueForKey_(
716 device_description,
717 NSString::alloc(nil).init_str("NSScreenNumber"),
718 );
719
720 let screen_number: u32 = msg_send![screen_number, unsignedIntValue];
721
722 Rc::new(MacDisplay(screen_number))
723 }
724 }
725
726 fn mouse_position(&self) -> Point<Pixels> {
727 let position = unsafe {
728 self.0
729 .lock()
730 .native_window
731 .mouseLocationOutsideOfEventStream()
732 };
733 convert_mouse_position(position, self.content_size().height)
734 }
735
736 fn as_any_mut(&mut self) -> &mut dyn Any {
737 self
738 }
739
740 fn set_input_handler(&mut self, input_handler: Box<dyn PlatformInputHandler>) {
741 self.0.as_ref().lock().input_handler = Some(input_handler);
742 }
743
744 fn prompt(
745 &self,
746 level: WindowPromptLevel,
747 msg: &str,
748 answers: &[&str],
749 ) -> oneshot::Receiver<usize> {
750 // macOs applies overrides to modal window buttons after they are added.
751 // Two most important for this logic are:
752 // * Buttons with "Cancel" title will be displayed as the last buttons in the modal
753 // * Last button added to the modal via `addButtonWithTitle` stays focused
754 // * Focused buttons react on "space"/" " keypresses
755 // * Usage of `keyEquivalent`, `makeFirstResponder` or `setInitialFirstResponder` does not change the focus
756 //
757 // See also https://developer.apple.com/documentation/appkit/nsalert/1524532-addbuttonwithtitle#discussion
758 // ```
759 // By default, the first button has a key equivalent of Return,
760 // any button with a title of “Cancel” has a key equivalent of Escape,
761 // 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).
762 // ```
763 //
764 // To avoid situations when the last element added is "Cancel" and it gets the focus
765 // (hence stealing both ESC and Space shortcuts), we find and add one non-Cancel button
766 // last, so it gets focus and a Space shortcut.
767 // This way, "Save this file? Yes/No/Cancel"-ish modals will get all three buttons mapped with a key.
768 let latest_non_cancel_label = answers
769 .iter()
770 .enumerate()
771 .rev()
772 .find(|(_, &label)| label != "Cancel")
773 .filter(|&(label_index, _)| label_index > 0);
774
775 unsafe {
776 let alert: id = msg_send![class!(NSAlert), alloc];
777 let alert: id = msg_send![alert, init];
778 let alert_style = match level {
779 WindowPromptLevel::Info => 1,
780 WindowPromptLevel::Warning => 0,
781 WindowPromptLevel::Critical => 2,
782 };
783 let _: () = msg_send![alert, setAlertStyle: alert_style];
784 let _: () = msg_send![alert, setMessageText: ns_string(msg)];
785
786 for (ix, answer) in answers
787 .iter()
788 .enumerate()
789 .filter(|&(ix, _)| Some(ix) != latest_non_cancel_label.map(|(ix, _)| ix))
790 {
791 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
792 let _: () = msg_send![button, setTag: ix as NSInteger];
793 }
794 if let Some((ix, answer)) = latest_non_cancel_label {
795 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
796 let _: () = msg_send![button, setTag: ix as NSInteger];
797 }
798
799 let (done_tx, done_rx) = oneshot::channel();
800 let done_tx = Cell::new(Some(done_tx));
801 let block = ConcreteBlock::new(move |answer: NSInteger| {
802 if let Some(done_tx) = done_tx.take() {
803 let _ = done_tx.send(answer.try_into().unwrap());
804 }
805 });
806 let block = block.copy();
807 let native_window = self.0.lock().native_window;
808 let executor = self.0.lock().executor.clone();
809 executor
810 .spawn_on_main_local(async move {
811 let _: () = msg_send![
812 alert,
813 beginSheetModalForWindow: native_window
814 completionHandler: block
815 ];
816 })
817 .detach();
818
819 done_rx
820 }
821 }
822
823 fn activate(&self) {
824 let window = self.0.lock().native_window;
825 let executor = self.0.lock().executor.clone();
826 executor
827 .spawn_on_main_local(async move {
828 unsafe {
829 let _: () = msg_send![window, makeKeyAndOrderFront: nil];
830 }
831 })
832 .detach();
833 }
834
835 fn set_title(&mut self, title: &str) {
836 unsafe {
837 let app = NSApplication::sharedApplication(nil);
838 let window = self.0.lock().native_window;
839 let title = ns_string(title);
840 let _: () = msg_send![app, changeWindowsItem:window title:title filename:false];
841 let _: () = msg_send![window, setTitle: title];
842 self.0.lock().move_traffic_light();
843 }
844 }
845
846 fn set_edited(&mut self, edited: bool) {
847 unsafe {
848 let window = self.0.lock().native_window;
849 msg_send![window, setDocumentEdited: edited as BOOL]
850 }
851
852 // Changing the document edited state resets the traffic light position,
853 // so we have to move it again.
854 self.0.lock().move_traffic_light();
855 }
856
857 fn show_character_palette(&self) {
858 unsafe {
859 let app = NSApplication::sharedApplication(nil);
860 let window = self.0.lock().native_window;
861 let _: () = msg_send![app, orderFrontCharacterPalette: window];
862 }
863 }
864
865 fn minimize(&self) {
866 let window = self.0.lock().native_window;
867 unsafe {
868 window.miniaturize_(nil);
869 }
870 }
871
872 fn zoom(&self) {
873 let this = self.0.lock();
874 let window = this.native_window;
875 this.executor
876 .spawn_on_main_local(async move {
877 unsafe {
878 window.zoom_(nil);
879 }
880 })
881 .detach();
882 }
883
884 fn toggle_full_screen(&self) {
885 let this = self.0.lock();
886 let window = this.native_window;
887 this.executor
888 .spawn_on_main_local(async move {
889 unsafe {
890 window.toggleFullScreen_(nil);
891 }
892 })
893 .detach();
894 }
895
896 fn on_input(&self, callback: Box<dyn FnMut(InputEvent) -> bool>) {
897 self.0.as_ref().lock().event_callback = Some(callback);
898 }
899
900 fn on_active_status_change(&self, callback: Box<dyn FnMut(bool)>) {
901 self.0.as_ref().lock().activate_callback = Some(callback);
902 }
903
904 fn on_resize(&self, callback: Box<dyn FnMut(Size<Pixels>, f32)>) {
905 self.0.as_ref().lock().resize_callback = Some(callback);
906 }
907
908 fn on_fullscreen(&self, callback: Box<dyn FnMut(bool)>) {
909 self.0.as_ref().lock().fullscreen_callback = Some(callback);
910 }
911
912 fn on_moved(&self, callback: Box<dyn FnMut()>) {
913 self.0.as_ref().lock().moved_callback = Some(callback);
914 }
915
916 fn on_should_close(&self, callback: Box<dyn FnMut() -> bool>) {
917 self.0.as_ref().lock().should_close_callback = Some(callback);
918 }
919
920 fn on_close(&self, callback: Box<dyn FnOnce()>) {
921 self.0.as_ref().lock().close_callback = Some(callback);
922 }
923
924 fn on_appearance_changed(&self, callback: Box<dyn FnMut()>) {
925 self.0.lock().appearance_changed_callback = Some(callback);
926 }
927
928 fn is_topmost_for_position(&self, position: Point<Pixels>) -> bool {
929 let self_borrow = self.0.lock();
930 let self_handle = self_borrow.handle;
931
932 unsafe {
933 let app = NSApplication::sharedApplication(nil);
934
935 // Convert back to screen coordinates
936 let screen_point = self_borrow.to_screen_ns_point(position);
937
938 let window_number: NSInteger = msg_send![class!(NSWindow), windowNumberAtPoint:screen_point belowWindowWithWindowNumber:0];
939 let top_most_window: id = msg_send![app, windowWithWindowNumber: window_number];
940
941 let is_panel: BOOL = msg_send![top_most_window, isKindOfClass: PANEL_CLASS];
942 let is_window: BOOL = msg_send![top_most_window, isKindOfClass: WINDOW_CLASS];
943 if is_panel == YES || is_window == YES {
944 let topmost_window = get_window_state(&*top_most_window).lock().handle;
945 topmost_window == self_handle
946 } else {
947 // Someone else's window is on top
948 false
949 }
950 }
951 }
952
953 fn draw(&self, scene: Scene) {
954 let mut this = self.0.lock();
955 this.scene_to_render = Some(scene);
956 unsafe {
957 let _: () = msg_send![this.native_window.contentView(), setNeedsDisplay: YES];
958 }
959 }
960
961 fn sprite_atlas(&self) -> Arc<dyn PlatformAtlas> {
962 self.0.lock().renderer.sprite_atlas().clone()
963 }
964}
965
966fn get_scale_factor(native_window: id) -> f32 {
967 unsafe {
968 let screen: id = msg_send![native_window, screen];
969 NSScreen::backingScaleFactor(screen) as f32
970 }
971}
972
973unsafe fn get_window_state(object: &Object) -> Arc<Mutex<MacWindowState>> {
974 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
975 let rc1 = Arc::from_raw(raw as *mut Mutex<MacWindowState>);
976 let rc2 = rc1.clone();
977 mem::forget(rc1);
978 rc2
979}
980
981unsafe fn drop_window_state(object: &Object) {
982 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
983 Rc::from_raw(raw as *mut RefCell<MacWindowState>);
984}
985
986extern "C" fn yes(_: &Object, _: Sel) -> BOOL {
987 YES
988}
989
990extern "C" fn dealloc_window(this: &Object, _: Sel) {
991 unsafe {
992 drop_window_state(this);
993 let _: () = msg_send![super(this, class!(NSWindow)), dealloc];
994 }
995}
996
997extern "C" fn dealloc_view(this: &Object, _: Sel) {
998 unsafe {
999 drop_window_state(this);
1000 let _: () = msg_send![super(this, class!(NSView)), dealloc];
1001 }
1002}
1003
1004extern "C" fn handle_key_equivalent(this: &Object, _: Sel, native_event: id) -> BOOL {
1005 handle_key_event(this, native_event, true)
1006}
1007
1008extern "C" fn handle_key_down(this: &Object, _: Sel, native_event: id) {
1009 handle_key_event(this, native_event, false);
1010}
1011
1012extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent: bool) -> BOOL {
1013 let window_state = unsafe { get_window_state(this) };
1014 let mut lock = window_state.as_ref().lock();
1015
1016 let window_height = lock.content_size().height;
1017 let event = unsafe { InputEvent::from_native(native_event, Some(window_height)) };
1018
1019 if let Some(InputEvent::KeyDown(event)) = event {
1020 // For certain keystrokes, macOS will first dispatch a "key equivalent" event.
1021 // If that event isn't handled, it will then dispatch a "key down" event. GPUI
1022 // makes no distinction between these two types of events, so we need to ignore
1023 // the "key down" event if we've already just processed its "key equivalent" version.
1024 if key_equivalent {
1025 lock.last_key_equivalent = Some(event.clone());
1026 } else if lock.last_key_equivalent.take().as_ref() == Some(&event) {
1027 return NO;
1028 }
1029
1030 let keydown = event.keystroke.clone();
1031 let fn_modifier = keydown.modifiers.function;
1032 // Ignore events from held-down keys after some of the initially-pressed keys
1033 // were released.
1034 if event.is_held {
1035 if lock.last_fresh_keydown.as_ref() != Some(&keydown) {
1036 return YES;
1037 }
1038 } else {
1039 lock.last_fresh_keydown = Some(keydown);
1040 }
1041 lock.pending_key_down = Some((event, None));
1042 drop(lock);
1043
1044 // Send the event to the input context for IME handling, unless the `fn` modifier is
1045 // being pressed.
1046 if !fn_modifier {
1047 unsafe {
1048 let input_context: id = msg_send![this, inputContext];
1049 let _: BOOL = msg_send![input_context, handleEvent: native_event];
1050 }
1051 }
1052
1053 let mut handled = false;
1054 let mut lock = window_state.lock();
1055 let ime_text = lock.ime_text.clone();
1056 if let Some((event, insert_text)) = lock.pending_key_down.take() {
1057 let is_held = event.is_held;
1058 if let Some(mut callback) = lock.event_callback.take() {
1059 drop(lock);
1060
1061 let is_composing =
1062 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1063 .flatten()
1064 .is_some();
1065 if !is_composing {
1066 // if the IME has changed the key, we'll first emit an event with the character
1067 // generated by the IME system; then fallback to the keystroke if that is not
1068 // handled.
1069 // cases that we have working:
1070 // - " on a brazillian layout by typing <quote><space>
1071 // - ctrl-` on a brazillian layout by typing <ctrl-`>
1072 // - $ on a czech QWERTY layout by typing <alt-4>
1073 // - 4 on a czech QWERTY layout by typing <shift-4>
1074 // - ctrl-4 on a czech QWERTY layout by typing <ctrl-alt-4> (or <ctrl-shift-4>)
1075 if ime_text.is_some() && ime_text.as_ref() != Some(&event.keystroke.key) {
1076 let event_with_ime_text = KeyDownEvent {
1077 is_held: false,
1078 keystroke: Keystroke {
1079 // we match ctrl because some use-cases need it.
1080 // we don't match alt because it's often used to generate the optional character
1081 // we don't match shift because we're not here with letters (usually)
1082 // we don't match cmd/fn because they don't seem to use IME
1083 modifiers: Default::default(),
1084 key: ime_text.clone().unwrap(),
1085 ime_key: None, // todo!("handle IME key")
1086 },
1087 };
1088 handled = callback(InputEvent::KeyDown(event_with_ime_text));
1089 }
1090 if !handled {
1091 // empty key happens when you type a deadkey in input composition.
1092 // (e.g. on a brazillian keyboard typing quote is a deadkey)
1093 if !event.keystroke.key.is_empty() {
1094 handled = callback(InputEvent::KeyDown(event));
1095 }
1096 }
1097 }
1098
1099 if !handled {
1100 if let Some(insert) = insert_text {
1101 handled = true;
1102 with_input_handler(this, |input_handler| {
1103 input_handler
1104 .replace_text_in_range(insert.replacement_range, &insert.text)
1105 });
1106 } else if !is_composing && is_held {
1107 if let Some(last_insert_text) = ime_text {
1108 //MacOS IME is a bit funky, and even when you've told it there's nothing to
1109 //inter it will still swallow certain keys (e.g. 'f', 'j') and not others
1110 //(e.g. 'n'). This is a problem for certain kinds of views, like the terminal
1111 with_input_handler(this, |input_handler| {
1112 if input_handler.selected_text_range().is_none() {
1113 handled = true;
1114 input_handler.replace_text_in_range(None, &last_insert_text)
1115 }
1116 });
1117 }
1118 }
1119 }
1120
1121 window_state.lock().event_callback = Some(callback);
1122 }
1123 } else {
1124 handled = true;
1125 }
1126
1127 handled as BOOL
1128 } else {
1129 NO
1130 }
1131}
1132
1133extern "C" fn handle_view_event(this: &Object, _: Sel, native_event: id) {
1134 let window_state = unsafe { get_window_state(this) };
1135 let weak_window_state = Arc::downgrade(&window_state);
1136 let mut lock = window_state.as_ref().lock();
1137 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1138
1139 let window_height = lock.content_size().height;
1140 let event = unsafe { InputEvent::from_native(native_event, Some(window_height)) };
1141
1142 if let Some(mut event) = event {
1143 let synthesized_second_event = match &mut event {
1144 InputEvent::MouseDown(
1145 event @ MouseDownEvent {
1146 button: MouseButton::Left,
1147 modifiers: Modifiers { control: true, .. },
1148 ..
1149 },
1150 ) => {
1151 *event = MouseDownEvent {
1152 button: MouseButton::Right,
1153 modifiers: Modifiers {
1154 control: false,
1155 ..event.modifiers
1156 },
1157 click_count: 1,
1158 ..*event
1159 };
1160
1161 Some(InputEvent::MouseDown(MouseDownEvent {
1162 button: MouseButton::Right,
1163 ..*event
1164 }))
1165 }
1166
1167 // Because we map a ctrl-left_down to a right_down -> right_up let's ignore
1168 // the ctrl-left_up to avoid having a mismatch in button down/up events if the
1169 // user is still holding ctrl when releasing the left mouse button
1170 InputEvent::MouseUp(MouseUpEvent {
1171 button: MouseButton::Left,
1172 modifiers: Modifiers { control: true, .. },
1173 ..
1174 }) => {
1175 lock.synthetic_drag_counter += 1;
1176 return;
1177 }
1178
1179 _ => None,
1180 };
1181
1182 match &event {
1183 InputEvent::MouseMove(
1184 event @ MouseMoveEvent {
1185 pressed_button: Some(_),
1186 ..
1187 },
1188 ) => {
1189 lock.synthetic_drag_counter += 1;
1190 let executor = lock.executor.clone();
1191 executor
1192 .spawn_on_main_local(synthetic_drag(
1193 weak_window_state,
1194 lock.synthetic_drag_counter,
1195 event.clone(),
1196 ))
1197 .detach();
1198 }
1199
1200 InputEvent::MouseMove(_) if !(is_active || lock.kind == WindowKind::PopUp) => return,
1201
1202 InputEvent::MouseUp(MouseUpEvent {
1203 button: MouseButton::Left,
1204 ..
1205 }) => {
1206 lock.synthetic_drag_counter += 1;
1207 }
1208
1209 InputEvent::ModifiersChanged(ModifiersChangedEvent { modifiers }) => {
1210 // Only raise modifiers changed event when they have actually changed
1211 if let Some(InputEvent::ModifiersChanged(ModifiersChangedEvent {
1212 modifiers: prev_modifiers,
1213 })) = &lock.previous_modifiers_changed_event
1214 {
1215 if prev_modifiers == modifiers {
1216 return;
1217 }
1218 }
1219
1220 lock.previous_modifiers_changed_event = Some(event.clone());
1221 }
1222
1223 _ => {}
1224 }
1225
1226 if let Some(mut callback) = lock.event_callback.take() {
1227 drop(lock);
1228 callback(event);
1229 if let Some(event) = synthesized_second_event {
1230 callback(event);
1231 }
1232 window_state.lock().event_callback = Some(callback);
1233 }
1234 }
1235}
1236
1237// Allows us to receive `cmd-.` (the shortcut for closing a dialog)
1238// https://bugs.eclipse.org/bugs/show_bug.cgi?id=300620#c6
1239extern "C" fn cancel_operation(this: &Object, _sel: Sel, _sender: id) {
1240 let window_state = unsafe { get_window_state(this) };
1241 let mut lock = window_state.as_ref().lock();
1242
1243 let keystroke = Keystroke {
1244 modifiers: Default::default(),
1245 key: ".".into(),
1246 ime_key: None,
1247 };
1248 let event = InputEvent::KeyDown(KeyDownEvent {
1249 keystroke: keystroke.clone(),
1250 is_held: false,
1251 });
1252
1253 lock.last_fresh_keydown = Some(keystroke);
1254 if let Some(mut callback) = lock.event_callback.take() {
1255 drop(lock);
1256 callback(event);
1257 window_state.lock().event_callback = Some(callback);
1258 }
1259}
1260
1261extern "C" fn window_did_resize(this: &Object, _: Sel, _: id) {
1262 let window_state = unsafe { get_window_state(this) };
1263 window_state.as_ref().lock().move_traffic_light();
1264}
1265
1266extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) {
1267 window_fullscreen_changed(this, true);
1268}
1269
1270extern "C" fn window_will_exit_fullscreen(this: &Object, _: Sel, _: id) {
1271 window_fullscreen_changed(this, false);
1272}
1273
1274fn window_fullscreen_changed(this: &Object, is_fullscreen: bool) {
1275 let window_state = unsafe { get_window_state(this) };
1276 let mut lock = window_state.as_ref().lock();
1277 if let Some(mut callback) = lock.fullscreen_callback.take() {
1278 drop(lock);
1279 callback(is_fullscreen);
1280 window_state.lock().fullscreen_callback = Some(callback);
1281 }
1282}
1283
1284extern "C" fn window_did_move(this: &Object, _: Sel, _: id) {
1285 let window_state = unsafe { get_window_state(this) };
1286 let mut lock = window_state.as_ref().lock();
1287 if let Some(mut callback) = lock.moved_callback.take() {
1288 drop(lock);
1289 callback();
1290 window_state.lock().moved_callback = Some(callback);
1291 }
1292}
1293
1294extern "C" fn window_did_change_key_status(this: &Object, selector: Sel, _: id) {
1295 let window_state = unsafe { get_window_state(this) };
1296 let lock = window_state.lock();
1297 let is_active = unsafe { lock.native_window.isKeyWindow() == YES };
1298
1299 // When opening a pop-up while the application isn't active, Cocoa sends a spurious
1300 // `windowDidBecomeKey` message to the previous key window even though that window
1301 // isn't actually key. This causes a bug if the application is later activated while
1302 // the pop-up is still open, making it impossible to activate the previous key window
1303 // even if the pop-up gets closed. The only way to activate it again is to de-activate
1304 // the app and re-activate it, which is a pretty bad UX.
1305 // The following code detects the spurious event and invokes `resignKeyWindow`:
1306 // in theory, we're not supposed to invoke this method manually but it balances out
1307 // the spurious `becomeKeyWindow` event and helps us work around that bug.
1308 if selector == sel!(windowDidBecomeKey:) {
1309 if !is_active {
1310 unsafe {
1311 let _: () = msg_send![lock.native_window, resignKeyWindow];
1312 return;
1313 }
1314 }
1315 }
1316
1317 let executor = lock.executor.clone();
1318 drop(lock);
1319 executor
1320 .spawn_on_main_local(async move {
1321 let mut lock = window_state.as_ref().lock();
1322 if let Some(mut callback) = lock.activate_callback.take() {
1323 drop(lock);
1324 callback(is_active);
1325 window_state.lock().activate_callback = Some(callback);
1326 };
1327 })
1328 .detach();
1329}
1330
1331extern "C" fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
1332 let window_state = unsafe { get_window_state(this) };
1333 let mut lock = window_state.as_ref().lock();
1334 if let Some(mut callback) = lock.should_close_callback.take() {
1335 drop(lock);
1336 let should_close = callback();
1337 window_state.lock().should_close_callback = Some(callback);
1338 should_close as BOOL
1339 } else {
1340 YES
1341 }
1342}
1343
1344extern "C" fn close_window(this: &Object, _: Sel) {
1345 unsafe {
1346 let close_callback = {
1347 let window_state = get_window_state(this);
1348 window_state
1349 .as_ref()
1350 .try_lock()
1351 .and_then(|mut window_state| window_state.close_callback.take())
1352 };
1353
1354 if let Some(callback) = close_callback {
1355 callback();
1356 }
1357
1358 let _: () = msg_send![super(this, class!(NSWindow)), close];
1359 }
1360}
1361
1362extern "C" fn make_backing_layer(this: &Object, _: Sel) -> id {
1363 let window_state = unsafe { get_window_state(this) };
1364 let window_state = window_state.as_ref().lock();
1365 window_state.renderer.layer().as_ptr() as id
1366}
1367
1368extern "C" fn view_did_change_backing_properties(this: &Object, _: Sel) {
1369 let window_state = unsafe { get_window_state(this) };
1370 let mut lock = window_state.as_ref().lock();
1371
1372 unsafe {
1373 let scale_factor = lock.scale_factor() as f64;
1374 let size = lock.content_size();
1375 let drawable_size: NSSize = NSSize {
1376 width: f64::from(size.width) * scale_factor,
1377 height: f64::from(size.height) * scale_factor,
1378 };
1379
1380 let _: () = msg_send![
1381 lock.renderer.layer(),
1382 setContentsScale: scale_factor
1383 ];
1384 let _: () = msg_send![
1385 lock.renderer.layer(),
1386 setDrawableSize: drawable_size
1387 ];
1388 }
1389
1390 if let Some(mut callback) = lock.resize_callback.take() {
1391 let content_size = lock.content_size();
1392 let scale_factor = lock.scale_factor();
1393 drop(lock);
1394 callback(content_size, scale_factor);
1395 window_state.as_ref().lock().resize_callback = Some(callback);
1396 };
1397}
1398
1399extern "C" fn set_frame_size(this: &Object, _: Sel, size: NSSize) {
1400 let window_state = unsafe { get_window_state(this) };
1401 let lock = window_state.as_ref().lock();
1402
1403 if lock.content_size() == size.into() {
1404 return;
1405 }
1406
1407 unsafe {
1408 let _: () = msg_send![super(this, class!(NSView)), setFrameSize: size];
1409 }
1410
1411 let scale_factor = lock.scale_factor() as f64;
1412 let drawable_size: NSSize = NSSize {
1413 width: size.width * scale_factor,
1414 height: size.height * scale_factor,
1415 };
1416
1417 unsafe {
1418 let _: () = msg_send![
1419 lock.renderer.layer(),
1420 setDrawableSize: drawable_size
1421 ];
1422 }
1423
1424 drop(lock);
1425 let mut lock = window_state.lock();
1426 if let Some(mut callback) = lock.resize_callback.take() {
1427 let content_size = lock.content_size();
1428 let scale_factor = lock.scale_factor();
1429 drop(lock);
1430 callback(content_size, scale_factor);
1431 window_state.lock().resize_callback = Some(callback);
1432 };
1433}
1434
1435extern "C" fn display_layer(this: &Object, _: Sel, _: id) {
1436 unsafe {
1437 let window_state = get_window_state(this);
1438 let mut window_state = window_state.as_ref().lock();
1439 if let Some(scene) = window_state.scene_to_render.take() {
1440 window_state.renderer.draw(&scene);
1441 }
1442 }
1443}
1444
1445extern "C" fn valid_attributes_for_marked_text(_: &Object, _: Sel) -> id {
1446 unsafe { msg_send![class!(NSArray), array] }
1447}
1448
1449extern "C" fn has_marked_text(this: &Object, _: Sel) -> BOOL {
1450 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1451 .flatten()
1452 .is_some() as BOOL
1453}
1454
1455extern "C" fn marked_range(this: &Object, _: Sel) -> NSRange {
1456 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1457 .flatten()
1458 .map_or(NSRange::invalid(), |range| range.into())
1459}
1460
1461extern "C" fn selected_range(this: &Object, _: Sel) -> NSRange {
1462 with_input_handler(this, |input_handler| input_handler.selected_text_range())
1463 .flatten()
1464 .map_or(NSRange::invalid(), |range| range.into())
1465}
1466
1467extern "C" fn first_rect_for_character_range(
1468 this: &Object,
1469 _: Sel,
1470 range: NSRange,
1471 _: id,
1472) -> NSRect {
1473 let frame = unsafe {
1474 let window = get_window_state(this).lock().native_window;
1475 NSView::frame(window)
1476 };
1477 with_input_handler(this, |input_handler| {
1478 input_handler.bounds_for_range(range.to_range()?)
1479 })
1480 .flatten()
1481 .map_or(
1482 NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)),
1483 |bounds| {
1484 NSRect::new(
1485 NSPoint::new(
1486 frame.origin.x + bounds.origin.x as f64,
1487 frame.origin.y + frame.size.height - bounds.origin.y as f64,
1488 ),
1489 NSSize::new(bounds.size.width as f64, bounds.size.height as f64),
1490 )
1491 },
1492 )
1493}
1494
1495extern "C" fn insert_text(this: &Object, _: Sel, text: id, replacement_range: NSRange) {
1496 unsafe {
1497 let window_state = get_window_state(this);
1498 let mut lock = window_state.lock();
1499 let pending_key_down = lock.pending_key_down.take();
1500 drop(lock);
1501
1502 let is_attributed_string: BOOL =
1503 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1504 let text: id = if is_attributed_string == YES {
1505 msg_send![text, string]
1506 } else {
1507 text
1508 };
1509 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1510 .to_str()
1511 .unwrap();
1512 let replacement_range = replacement_range.to_range();
1513
1514 window_state.lock().ime_text = Some(text.to_string());
1515 window_state.lock().ime_state = ImeState::Acted;
1516
1517 let is_composing =
1518 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1519 .flatten()
1520 .is_some();
1521
1522 if is_composing || text.chars().count() > 1 || pending_key_down.is_none() {
1523 with_input_handler(this, |input_handler| {
1524 input_handler.replace_text_in_range(replacement_range, text)
1525 });
1526 } else {
1527 let mut pending_key_down = pending_key_down.unwrap();
1528 pending_key_down.1 = Some(InsertText {
1529 replacement_range,
1530 text: text.to_string(),
1531 });
1532 window_state.lock().pending_key_down = Some(pending_key_down);
1533 }
1534 }
1535}
1536
1537extern "C" fn set_marked_text(
1538 this: &Object,
1539 _: Sel,
1540 text: id,
1541 selected_range: NSRange,
1542 replacement_range: NSRange,
1543) {
1544 unsafe {
1545 let window_state = get_window_state(this);
1546 window_state.lock().pending_key_down.take();
1547
1548 let is_attributed_string: BOOL =
1549 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1550 let text: id = if is_attributed_string == YES {
1551 msg_send![text, string]
1552 } else {
1553 text
1554 };
1555 let selected_range = selected_range.to_range();
1556 let replacement_range = replacement_range.to_range();
1557 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1558 .to_str()
1559 .unwrap();
1560
1561 window_state.lock().ime_state = ImeState::Acted;
1562 window_state.lock().ime_text = Some(text.to_string());
1563
1564 with_input_handler(this, |input_handler| {
1565 input_handler.replace_and_mark_text_in_range(replacement_range, text, selected_range);
1566 });
1567 }
1568}
1569
1570extern "C" fn unmark_text(this: &Object, _: Sel) {
1571 unsafe {
1572 let state = get_window_state(this);
1573 let mut borrow = state.lock();
1574 borrow.ime_state = ImeState::Acted;
1575 borrow.ime_text.take();
1576 }
1577
1578 with_input_handler(this, |input_handler| input_handler.unmark_text());
1579}
1580
1581extern "C" fn attributed_substring_for_proposed_range(
1582 this: &Object,
1583 _: Sel,
1584 range: NSRange,
1585 _actual_range: *mut c_void,
1586) -> id {
1587 with_input_handler(this, |input_handler| {
1588 let range = range.to_range()?;
1589 if range.is_empty() {
1590 return None;
1591 }
1592
1593 let selected_text = input_handler.text_for_range(range)?;
1594 unsafe {
1595 let string: id = msg_send![class!(NSAttributedString), alloc];
1596 let string: id = msg_send![string, initWithString: ns_string(&selected_text)];
1597 Some(string)
1598 }
1599 })
1600 .flatten()
1601 .unwrap_or(nil)
1602}
1603
1604extern "C" fn do_command_by_selector(this: &Object, _: Sel, _: Sel) {
1605 unsafe {
1606 let state = get_window_state(this);
1607 let mut borrow = state.lock();
1608 borrow.ime_state = ImeState::Continue;
1609 borrow.ime_text.take();
1610 }
1611}
1612
1613extern "C" fn view_did_change_effective_appearance(this: &Object, _: Sel) {
1614 unsafe {
1615 let state = get_window_state(this);
1616 let mut lock = state.as_ref().lock();
1617 if let Some(mut callback) = lock.appearance_changed_callback.take() {
1618 drop(lock);
1619 callback();
1620 state.lock().appearance_changed_callback = Some(callback);
1621 }
1622 }
1623}
1624
1625extern "C" fn accepts_first_mouse(this: &Object, _: Sel, _: id) -> BOOL {
1626 unsafe {
1627 let state = get_window_state(this);
1628 let lock = state.as_ref().lock();
1629 return if lock.kind == WindowKind::PopUp {
1630 YES
1631 } else {
1632 NO
1633 };
1634 }
1635}
1636
1637extern "C" fn dragging_entered(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1638 let window_state = unsafe { get_window_state(this) };
1639 if send_new_event(&window_state, {
1640 let position = drag_event_position(&window_state, dragging_info);
1641 let paths = external_paths_from_event(dragging_info);
1642 InputEvent::FileDrop(FileDropEvent::Entered {
1643 position,
1644 files: paths,
1645 })
1646 }) {
1647 NSDragOperationCopy
1648 } else {
1649 NSDragOperationNone
1650 }
1651}
1652
1653extern "C" fn dragging_updated(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation {
1654 let window_state = unsafe { get_window_state(this) };
1655 let position = drag_event_position(&window_state, dragging_info);
1656 if send_new_event(
1657 &window_state,
1658 InputEvent::FileDrop(FileDropEvent::Pending { position }),
1659 ) {
1660 NSDragOperationCopy
1661 } else {
1662 NSDragOperationNone
1663 }
1664}
1665
1666extern "C" fn dragging_exited(this: &Object, _: Sel, _: id) {
1667 let window_state = unsafe { get_window_state(this) };
1668 send_new_event(&window_state, InputEvent::FileDrop(FileDropEvent::Exited));
1669}
1670
1671extern "C" fn perform_drag_operation(this: &Object, _: Sel, dragging_info: id) -> BOOL {
1672 let window_state = unsafe { get_window_state(this) };
1673 let position = drag_event_position(&window_state, dragging_info);
1674 if send_new_event(
1675 &window_state,
1676 InputEvent::FileDrop(FileDropEvent::Submit { position }),
1677 ) {
1678 YES
1679 } else {
1680 NO
1681 }
1682}
1683
1684fn external_paths_from_event(dragging_info: *mut Object) -> ExternalPaths {
1685 let mut paths = SmallVec::new();
1686 let pasteboard: id = unsafe { msg_send![dragging_info, draggingPasteboard] };
1687 let filenames = unsafe { NSPasteboard::propertyListForType(pasteboard, NSFilenamesPboardType) };
1688 for file in unsafe { filenames.iter() } {
1689 let path = unsafe {
1690 let f = NSString::UTF8String(file);
1691 CStr::from_ptr(f).to_string_lossy().into_owned()
1692 };
1693 paths.push(PathBuf::from(path))
1694 }
1695 ExternalPaths(paths)
1696}
1697
1698extern "C" fn conclude_drag_operation(this: &Object, _: Sel, _: id) {
1699 let window_state = unsafe { get_window_state(this) };
1700 send_new_event(&window_state, InputEvent::FileDrop(FileDropEvent::Exited));
1701}
1702
1703async fn synthetic_drag(
1704 window_state: Weak<Mutex<MacWindowState>>,
1705 drag_id: usize,
1706 event: MouseMoveEvent,
1707) {
1708 loop {
1709 Timer::after(Duration::from_millis(16)).await;
1710 if let Some(window_state) = window_state.upgrade() {
1711 let mut lock = window_state.lock();
1712 if lock.synthetic_drag_counter == drag_id {
1713 if let Some(mut callback) = lock.event_callback.take() {
1714 drop(lock);
1715 callback(InputEvent::MouseMove(event.clone()));
1716 window_state.lock().event_callback = Some(callback);
1717 }
1718 } else {
1719 break;
1720 }
1721 }
1722 }
1723}
1724
1725fn send_new_event(window_state_lock: &Mutex<MacWindowState>, e: InputEvent) -> bool {
1726 let window_state = window_state_lock.lock().event_callback.take();
1727 if let Some(mut callback) = window_state {
1728 callback(e);
1729 window_state_lock.lock().event_callback = Some(callback);
1730 true
1731 } else {
1732 false
1733 }
1734}
1735
1736fn drag_event_position(window_state: &Mutex<MacWindowState>, dragging_info: id) -> Point<Pixels> {
1737 let drag_location: NSPoint = unsafe { msg_send![dragging_info, draggingLocation] };
1738 convert_mouse_position(drag_location, window_state.lock().content_size().height)
1739}
1740
1741fn with_input_handler<F, R>(window: &Object, f: F) -> Option<R>
1742where
1743 F: FnOnce(&mut dyn PlatformInputHandler) -> R,
1744{
1745 let window_state = unsafe { get_window_state(window) };
1746 let mut lock = window_state.as_ref().lock();
1747 if let Some(mut input_handler) = lock.input_handler.take() {
1748 drop(lock);
1749 let result = f(input_handler.as_mut());
1750 window_state.lock().input_handler = Some(input_handler);
1751 Some(result)
1752 } else {
1753 None
1754 }
1755}