use super::{global_bounds_from_ns_rect, ns_string, renderer, MacDisplay, NSRange}; use crate::{ global_bounds_to_ns_rect, platform::PlatformInputHandler, point, px, size, AnyWindowHandle, Bounds, DisplayLink, ExternalPaths, FileDropEvent, ForegroundExecutor, GlobalPixels, KeyDownEvent, Keystroke, Modifiers, ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, Pixels, PlatformAtlas, PlatformDisplay, PlatformInput, PlatformWindow, Point, PromptLevel, Size, Timer, WindowAppearance, WindowBounds, WindowKind, WindowOptions, }; use block::ConcreteBlock; use cocoa::{ appkit::{ CGPoint, NSApplication, NSBackingStoreBuffered, NSEventModifierFlags, NSFilenamesPboardType, NSPasteboard, NSScreen, NSView, NSViewHeightSizable, NSViewWidthSizable, NSWindow, NSWindowButton, NSWindowCollectionBehavior, NSWindowOcclusionState, NSWindowStyleMask, NSWindowTitleVisibility, }, base::{id, nil}, foundation::{ NSArray, NSAutoreleasePool, NSDictionary, NSFastEnumeration, NSInteger, NSPoint, NSRect, NSSize, NSString, NSUInteger, }, }; use core_graphics::display::{CGDirectDisplayID, CGRect}; use ctor::ctor; use futures::channel::oneshot; use objc::{ class, declare::ClassDecl, msg_send, runtime::{Class, Object, Protocol, Sel, BOOL, NO, YES}, sel, sel_impl, }; use parking_lot::Mutex; use raw_window_handle::{ AppKitDisplayHandle, AppKitWindowHandle, DisplayHandle, HasDisplayHandle, HasWindowHandle, RawWindowHandle, WindowHandle, }; use smallvec::SmallVec; use std::{ any::Any, cell::Cell, ffi::{c_void, CStr}, mem, ops::Range, os::raw::c_char, path::PathBuf, ptr::{self, NonNull}, rc::Rc, sync::{Arc, Weak}, time::Duration, }; use util::ResultExt; const WINDOW_STATE_IVAR: &str = "windowState"; static mut WINDOW_CLASS: *const Class = ptr::null(); static mut PANEL_CLASS: *const Class = ptr::null(); static mut VIEW_CLASS: *const Class = ptr::null(); #[allow(non_upper_case_globals)] const NSWindowStyleMaskNonactivatingPanel: NSWindowStyleMask = unsafe { NSWindowStyleMask::from_bits_unchecked(1 << 7) }; #[allow(non_upper_case_globals)] const NSNormalWindowLevel: NSInteger = 0; #[allow(non_upper_case_globals)] const NSPopUpWindowLevel: NSInteger = 101; #[allow(non_upper_case_globals)] const NSTrackingMouseEnteredAndExited: NSUInteger = 0x01; #[allow(non_upper_case_globals)] const NSTrackingMouseMoved: NSUInteger = 0x02; #[allow(non_upper_case_globals)] const NSTrackingActiveAlways: NSUInteger = 0x80; #[allow(non_upper_case_globals)] const NSTrackingInVisibleRect: NSUInteger = 0x200; #[allow(non_upper_case_globals)] const NSWindowAnimationBehaviorUtilityWindow: NSInteger = 4; #[allow(non_upper_case_globals)] const NSViewLayerContentsRedrawDuringViewResize: NSInteger = 2; // https://developer.apple.com/documentation/appkit/nsdragoperation type NSDragOperation = NSUInteger; #[allow(non_upper_case_globals)] const NSDragOperationNone: NSDragOperation = 0; #[allow(non_upper_case_globals)] const NSDragOperationCopy: NSDragOperation = 1; #[ctor] unsafe fn build_classes() { WINDOW_CLASS = build_window_class("GPUIWindow", class!(NSWindow)); PANEL_CLASS = build_window_class("GPUIPanel", class!(NSPanel)); VIEW_CLASS = { let mut decl = ClassDecl::new("GPUIView", class!(NSView)).unwrap(); decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR); decl.add_method(sel!(dealloc), dealloc_view as extern "C" fn(&Object, Sel)); decl.add_method( sel!(performKeyEquivalent:), handle_key_equivalent as extern "C" fn(&Object, Sel, id) -> BOOL, ); decl.add_method( sel!(keyDown:), handle_key_down as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(mouseDown:), handle_view_event as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(mouseUp:), handle_view_event as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(rightMouseDown:), handle_view_event as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(rightMouseUp:), handle_view_event as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(otherMouseDown:), handle_view_event as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(otherMouseUp:), handle_view_event as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(mouseMoved:), handle_view_event as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(mouseExited:), handle_view_event as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(mouseDragged:), handle_view_event as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(scrollWheel:), handle_view_event as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(flagsChanged:), handle_view_event as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(cancelOperation:), cancel_operation as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(makeBackingLayer), make_backing_layer as extern "C" fn(&Object, Sel) -> id, ); decl.add_protocol(Protocol::get("CALayerDelegate").unwrap()); decl.add_method( sel!(viewDidChangeBackingProperties), view_did_change_backing_properties as extern "C" fn(&Object, Sel), ); decl.add_method( sel!(setFrameSize:), set_frame_size as extern "C" fn(&Object, Sel, NSSize), ); decl.add_method( sel!(displayLayer:), display_layer as extern "C" fn(&Object, Sel, id), ); decl.add_protocol(Protocol::get("NSTextInputClient").unwrap()); decl.add_method( sel!(validAttributesForMarkedText), valid_attributes_for_marked_text as extern "C" fn(&Object, Sel) -> id, ); decl.add_method( sel!(hasMarkedText), has_marked_text as extern "C" fn(&Object, Sel) -> BOOL, ); decl.add_method( sel!(markedRange), marked_range as extern "C" fn(&Object, Sel) -> NSRange, ); decl.add_method( sel!(selectedRange), selected_range as extern "C" fn(&Object, Sel) -> NSRange, ); decl.add_method( sel!(firstRectForCharacterRange:actualRange:), first_rect_for_character_range as extern "C" fn(&Object, Sel, NSRange, id) -> NSRect, ); decl.add_method( sel!(insertText:replacementRange:), insert_text as extern "C" fn(&Object, Sel, id, NSRange), ); decl.add_method( sel!(setMarkedText:selectedRange:replacementRange:), set_marked_text as extern "C" fn(&Object, Sel, id, NSRange, NSRange), ); decl.add_method(sel!(unmarkText), unmark_text as extern "C" fn(&Object, Sel)); decl.add_method( sel!(attributedSubstringForProposedRange:actualRange:), attributed_substring_for_proposed_range as extern "C" fn(&Object, Sel, NSRange, *mut c_void) -> id, ); decl.add_method( sel!(viewDidChangeEffectiveAppearance), view_did_change_effective_appearance as extern "C" fn(&Object, Sel), ); // Suppress beep on keystrokes with modifier keys. decl.add_method( sel!(doCommandBySelector:), do_command_by_selector as extern "C" fn(&Object, Sel, Sel), ); decl.add_method( sel!(acceptsFirstMouse:), accepts_first_mouse as extern "C" fn(&Object, Sel, id) -> BOOL, ); decl.register() }; } pub(crate) fn convert_mouse_position(position: NSPoint, window_height: Pixels) -> Point { point( px(position.x as f32), // MacOS screen coordinates are relative to bottom left window_height - px(position.y as f32), ) } unsafe fn build_window_class(name: &'static str, superclass: &Class) -> *const Class { let mut decl = ClassDecl::new(name, superclass).unwrap(); decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR); decl.add_method(sel!(dealloc), dealloc_window as extern "C" fn(&Object, Sel)); decl.add_method( sel!(canBecomeMainWindow), yes as extern "C" fn(&Object, Sel) -> BOOL, ); decl.add_method( sel!(canBecomeKeyWindow), yes as extern "C" fn(&Object, Sel) -> BOOL, ); decl.add_method( sel!(windowDidResize:), window_did_resize as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(windowDidChangeOcclusionState:), window_did_change_occlusion_state as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(windowWillEnterFullScreen:), window_will_enter_fullscreen as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(windowWillExitFullScreen:), window_will_exit_fullscreen as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(windowDidMove:), window_did_move as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(windowDidChangeScreen:), window_did_change_screen as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(windowDidBecomeKey:), window_did_change_key_status as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(windowDidResignKey:), window_did_change_key_status as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(windowShouldClose:), window_should_close as extern "C" fn(&Object, Sel, id) -> BOOL, ); decl.add_method(sel!(close), close_window as extern "C" fn(&Object, Sel)); decl.add_method( sel!(draggingEntered:), dragging_entered as extern "C" fn(&Object, Sel, id) -> NSDragOperation, ); decl.add_method( sel!(draggingUpdated:), dragging_updated as extern "C" fn(&Object, Sel, id) -> NSDragOperation, ); decl.add_method( sel!(draggingExited:), dragging_exited as extern "C" fn(&Object, Sel, id), ); decl.add_method( sel!(performDragOperation:), perform_drag_operation as extern "C" fn(&Object, Sel, id) -> BOOL, ); decl.add_method( sel!(concludeDragOperation:), conclude_drag_operation as extern "C" fn(&Object, Sel, id), ); decl.register() } #[allow(clippy::enum_variant_names)] enum ImeInput { InsertText(String, Option>), SetMarkedText(String, Option>, Option>), UnmarkText, } struct MacWindowState { handle: AnyWindowHandle, executor: ForegroundExecutor, native_window: id, native_window_was_closed: bool, native_view: NonNull, display_link: Option, renderer: renderer::Renderer, kind: WindowKind, request_frame_callback: Option>, event_callback: Option bool>>, activate_callback: Option>, resize_callback: Option, f32)>>, fullscreen_callback: Option>, moved_callback: Option>, should_close_callback: Option bool>>, close_callback: Option>, appearance_changed_callback: Option>, input_handler: Option, last_key_equivalent: Option, synthetic_drag_counter: usize, last_fresh_keydown: Option, traffic_light_position: Option>, previous_modifiers_changed_event: Option, // State tracking what the IME did after the last request input_during_keydown: Option>, previous_keydown_inserted_text: Option, external_files_dragged: bool, } impl MacWindowState { fn move_traffic_light(&self) { if let Some(traffic_light_position) = self.traffic_light_position { if self.is_fullscreen() { // Moving traffic lights while fullscreen doesn't work, // see https://github.com/zed-industries/zed/issues/4712 return; } let titlebar_height = self.titlebar_height(); unsafe { let close_button: id = msg_send![ self.native_window, standardWindowButton: NSWindowButton::NSWindowCloseButton ]; let min_button: id = msg_send![ self.native_window, standardWindowButton: NSWindowButton::NSWindowMiniaturizeButton ]; let zoom_button: id = msg_send![ self.native_window, standardWindowButton: NSWindowButton::NSWindowZoomButton ]; let mut close_button_frame: CGRect = msg_send![close_button, frame]; let mut min_button_frame: CGRect = msg_send![min_button, frame]; let mut zoom_button_frame: CGRect = msg_send![zoom_button, frame]; let mut origin = point( traffic_light_position.x, titlebar_height - traffic_light_position.y - px(close_button_frame.size.height as f32), ); let button_spacing = px((min_button_frame.origin.x - close_button_frame.origin.x) as f32); close_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into()); let _: () = msg_send![close_button, setFrame: close_button_frame]; origin.x += button_spacing; min_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into()); let _: () = msg_send![min_button, setFrame: min_button_frame]; origin.x += button_spacing; zoom_button_frame.origin = CGPoint::new(origin.x.into(), origin.y.into()); let _: () = msg_send![zoom_button, setFrame: zoom_button_frame]; origin.x += button_spacing; } } } fn start_display_link(&mut self) { self.stop_display_link(); let display_id = unsafe { display_id_for_screen(self.native_window.screen()) }; if let Some(mut display_link) = DisplayLink::new(display_id, self.native_view.as_ptr() as *mut c_void, step).log_err() { display_link.start().log_err(); self.display_link = Some(display_link); } } fn stop_display_link(&mut self) { self.display_link = None; } fn is_fullscreen(&self) -> bool { unsafe { let style_mask = self.native_window.styleMask(); style_mask.contains(NSWindowStyleMask::NSFullScreenWindowMask) } } fn bounds(&self) -> WindowBounds { unsafe { if self.is_fullscreen() { return WindowBounds::Fullscreen; } let frame = self.frame(); let screen_size = self.native_window.screen().visibleFrame().into(); if frame.size == screen_size { WindowBounds::Maximized } else { WindowBounds::Fixed(frame) } } } fn frame(&self) -> Bounds { let frame = unsafe { NSWindow::frame(self.native_window) }; global_bounds_from_ns_rect(frame) } fn content_size(&self) -> Size { let NSSize { width, height, .. } = unsafe { NSView::frame(self.native_window.contentView()) }.size; size(px(width as f32), px(height as f32)) } fn scale_factor(&self) -> f32 { get_scale_factor(self.native_window) } fn update_drawable_size(&mut self, drawable_size: NSSize) { self.renderer.update_drawable_size(Size { width: drawable_size.width, height: drawable_size.height, }) } fn titlebar_height(&self) -> Pixels { unsafe { let frame = NSWindow::frame(self.native_window); let content_layout_rect: CGRect = msg_send![self.native_window, contentLayoutRect]; px((frame.size.height - content_layout_rect.size.height) as f32) } } fn to_screen_ns_point(&self, point: Point) -> NSPoint { unsafe { let point = NSPoint::new( point.x.into(), (self.content_size().height - point.y).into(), ); msg_send![self.native_window, convertPointToScreen: point] } } } unsafe impl Send for MacWindowState {} pub(crate) struct MacWindow(Arc>); impl MacWindow { pub fn open( handle: AnyWindowHandle, options: WindowOptions, executor: ForegroundExecutor, renderer_context: renderer::Context, ) -> Self { unsafe { let pool = NSAutoreleasePool::new(nil); let mut style_mask; if let Some(titlebar) = options.titlebar.as_ref() { style_mask = NSWindowStyleMask::NSClosableWindowMask | NSWindowStyleMask::NSMiniaturizableWindowMask | NSWindowStyleMask::NSResizableWindowMask | NSWindowStyleMask::NSTitledWindowMask; if titlebar.appears_transparent { style_mask |= NSWindowStyleMask::NSFullSizeContentViewWindowMask; } } else { style_mask = NSWindowStyleMask::NSTitledWindowMask | NSWindowStyleMask::NSFullSizeContentViewWindowMask; } let native_window: id = match options.kind { WindowKind::Normal => msg_send![WINDOW_CLASS, alloc], WindowKind::PopUp => { style_mask |= NSWindowStyleMaskNonactivatingPanel; msg_send![PANEL_CLASS, alloc] } }; let display = options .display_id .and_then(MacDisplay::find_by_id) .unwrap_or_else(MacDisplay::primary); let mut target_screen = nil; let screens = NSScreen::screens(nil); let count: u64 = cocoa::foundation::NSArray::count(screens); for i in 0..count { let screen = cocoa::foundation::NSArray::objectAtIndex(screens, i); let display_id = display_id_for_screen(screen); if display_id == display.id().0 { target_screen = screen; break; } } let native_window = native_window.initWithContentRect_styleMask_backing_defer_screen_( NSRect::new(NSPoint::new(0., 0.), NSSize::new(1024., 768.)), style_mask, NSBackingStoreBuffered, NO, target_screen, ); assert!(!native_window.is_null()); let () = msg_send![ native_window, registerForDraggedTypes: NSArray::arrayWithObject(nil, NSFilenamesPboardType) ]; let native_view: id = msg_send![VIEW_CLASS, alloc]; let native_view = NSView::init(native_view); assert!(!native_view.is_null()); let window_size = { let bounds = match options.bounds { WindowBounds::Fullscreen | WindowBounds::Maximized => { native_window.screen().visibleFrame() } WindowBounds::Fixed(bounds) => global_bounds_to_ns_rect(bounds), }; let scale = get_scale_factor(native_window); size( bounds.size.width as f32 * scale, bounds.size.height as f32 * scale, ) }; let window = Self(Arc::new(Mutex::new(MacWindowState { handle, executor, native_window, native_window_was_closed: false, native_view: NonNull::new_unchecked(native_view), display_link: None, renderer: renderer::new_renderer( renderer_context, native_window as *mut _, native_view as *mut _, window_size, ), kind: options.kind, request_frame_callback: None, event_callback: None, activate_callback: None, resize_callback: None, fullscreen_callback: None, moved_callback: None, should_close_callback: None, close_callback: None, appearance_changed_callback: None, input_handler: None, last_key_equivalent: None, synthetic_drag_counter: 0, last_fresh_keydown: None, traffic_light_position: options .titlebar .as_ref() .and_then(|titlebar| titlebar.traffic_light_position), previous_modifiers_changed_event: None, input_during_keydown: None, previous_keydown_inserted_text: None, external_files_dragged: false, }))); (*native_window).set_ivar( WINDOW_STATE_IVAR, Arc::into_raw(window.0.clone()) as *const c_void, ); native_window.setDelegate_(native_window); (*native_view).set_ivar( WINDOW_STATE_IVAR, Arc::into_raw(window.0.clone()) as *const c_void, ); if let Some(title) = options .titlebar .as_ref() .and_then(|t| t.title.as_ref().map(AsRef::as_ref)) { native_window.setTitle_(NSString::alloc(nil).init_str(title)); } native_window.setMovable_(options.is_movable as BOOL); if options .titlebar .map_or(true, |titlebar| titlebar.appears_transparent) { native_window.setTitlebarAppearsTransparent_(YES); native_window.setTitleVisibility_(NSWindowTitleVisibility::NSWindowTitleHidden); } native_view.setAutoresizingMask_(NSViewWidthSizable | NSViewHeightSizable); native_view.setWantsBestResolutionOpenGLSurface_(YES); // From winit crate: On Mojave, views automatically become layer-backed shortly after // being added to a native_window. Changing the layer-backedness of a view breaks the // association between the view and its associated OpenGL context. To work around this, // on we explicitly make the view layer-backed up front so that AppKit doesn't do it // itself and break the association with its context. native_view.setWantsLayer(YES); let _: () = msg_send![ native_view, setLayerContentsRedrawPolicy: NSViewLayerContentsRedrawDuringViewResize ]; native_window.setContentView_(native_view.autorelease()); native_window.makeFirstResponder_(native_view); if options.center { native_window.center(); } match options.kind { WindowKind::Normal => { native_window.setLevel_(NSNormalWindowLevel); native_window.setAcceptsMouseMovedEvents_(YES); } WindowKind::PopUp => { // Use a tracking area to allow receiving MouseMoved events even when // the window or application aren't active, which is often the case // e.g. for notification windows. let tracking_area: id = msg_send![class!(NSTrackingArea), alloc]; let _: () = msg_send![ tracking_area, initWithRect: NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)) options: NSTrackingMouseEnteredAndExited | NSTrackingMouseMoved | NSTrackingActiveAlways | NSTrackingInVisibleRect owner: native_view userInfo: nil ]; let _: () = msg_send![native_view, addTrackingArea: tracking_area.autorelease()]; native_window.setLevel_(NSPopUpWindowLevel); let _: () = msg_send![ native_window, setAnimationBehavior: NSWindowAnimationBehaviorUtilityWindow ]; native_window.setCollectionBehavior_( NSWindowCollectionBehavior::NSWindowCollectionBehaviorCanJoinAllSpaces | NSWindowCollectionBehavior::NSWindowCollectionBehaviorFullScreenAuxiliary ); } } if options.focus { native_window.makeKeyAndOrderFront_(nil); } else if options.show { native_window.orderFront_(nil); } let screen = native_window.screen(); match options.bounds { WindowBounds::Fullscreen => { // We need to toggle full screen asynchronously as doing so may // call back into the platform handlers. window.toggle_full_screen() } WindowBounds::Maximized => { native_window.setFrame_display_(screen.visibleFrame(), YES); } WindowBounds::Fixed(bounds) => { let display_bounds = display.bounds(); let frame = if bounds.intersects(&display_bounds) { global_bounds_to_ns_rect(bounds) } else { global_bounds_to_ns_rect(display_bounds) }; native_window.setFrame_display_(frame, YES); } } window.0.lock().move_traffic_light(); pool.drain(); window } } pub fn active_window() -> Option { unsafe { let app = NSApplication::sharedApplication(nil); let main_window: id = msg_send![app, mainWindow]; if msg_send![main_window, isKindOfClass: WINDOW_CLASS] { let handle = get_window_state(&*main_window).lock().handle; Some(handle) } else { None } } } } impl Drop for MacWindow { fn drop(&mut self) { let mut this = self.0.lock(); this.renderer.destroy(); let window = this.native_window; this.display_link.take(); unsafe { this.native_window.setDelegate_(nil); } if !this.native_window_was_closed { this.executor .spawn(async move { unsafe { window.close(); } }) .detach(); } } } impl PlatformWindow for MacWindow { fn bounds(&self) -> WindowBounds { self.0.as_ref().lock().bounds() } fn content_size(&self) -> Size { self.0.as_ref().lock().content_size() } fn scale_factor(&self) -> f32 { self.0.as_ref().lock().scale_factor() } fn titlebar_height(&self) -> Pixels { self.0.as_ref().lock().titlebar_height() } fn appearance(&self) -> WindowAppearance { unsafe { let appearance: id = msg_send![self.0.lock().native_window, effectiveAppearance]; WindowAppearance::from_native(appearance) } } fn display(&self) -> Rc { unsafe { let screen = self.0.lock().native_window.screen(); let device_description: id = msg_send![screen, deviceDescription]; let screen_number: id = NSDictionary::valueForKey_( device_description, NSString::alloc(nil).init_str("NSScreenNumber"), ); let screen_number: u32 = msg_send![screen_number, unsignedIntValue]; Rc::new(MacDisplay(screen_number)) } } fn mouse_position(&self) -> Point { let position = unsafe { self.0 .lock() .native_window .mouseLocationOutsideOfEventStream() }; convert_mouse_position(position, self.content_size().height) } fn modifiers(&self) -> Modifiers { unsafe { let modifiers: NSEventModifierFlags = msg_send![class!(NSEvent), modifierFlags]; let control = modifiers.contains(NSEventModifierFlags::NSControlKeyMask); let alt = modifiers.contains(NSEventModifierFlags::NSAlternateKeyMask); let shift = modifiers.contains(NSEventModifierFlags::NSShiftKeyMask); let command = modifiers.contains(NSEventModifierFlags::NSCommandKeyMask); let function = modifiers.contains(NSEventModifierFlags::NSFunctionKeyMask); Modifiers { control, alt, shift, command, function, } } } fn as_any_mut(&mut self) -> &mut dyn Any { self } fn set_input_handler(&mut self, input_handler: PlatformInputHandler) { self.0.as_ref().lock().input_handler = Some(input_handler); } fn take_input_handler(&mut self) -> Option { self.0.as_ref().lock().input_handler.take() } fn prompt( &self, level: PromptLevel, msg: &str, detail: Option<&str>, answers: &[&str], ) -> oneshot::Receiver { // macOs applies overrides to modal window buttons after they are added. // Two most important for this logic are: // * Buttons with "Cancel" title will be displayed as the last buttons in the modal // * Last button added to the modal via `addButtonWithTitle` stays focused // * Focused buttons react on "space"/" " keypresses // * Usage of `keyEquivalent`, `makeFirstResponder` or `setInitialFirstResponder` does not change the focus // // See also https://developer.apple.com/documentation/appkit/nsalert/1524532-addbuttonwithtitle#discussion // ``` // By default, the first button has a key equivalent of Return, // any button with a title of “Cancel” has a key equivalent of Escape, // 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). // ``` // // To avoid situations when the last element added is "Cancel" and it gets the focus // (hence stealing both ESC and Space shortcuts), we find and add one non-Cancel button // last, so it gets focus and a Space shortcut. // This way, "Save this file? Yes/No/Cancel"-ish modals will get all three buttons mapped with a key. let latest_non_cancel_label = answers .iter() .enumerate() .rev() .find(|(_, &label)| label != "Cancel") .filter(|&(label_index, _)| label_index > 0); unsafe { let alert: id = msg_send![class!(NSAlert), alloc]; let alert: id = msg_send![alert, init]; let alert_style = match level { PromptLevel::Info => 1, PromptLevel::Warning => 0, PromptLevel::Critical => 2, }; let _: () = msg_send![alert, setAlertStyle: alert_style]; let _: () = msg_send![alert, setMessageText: ns_string(msg)]; if let Some(detail) = detail { let _: () = msg_send![alert, setInformativeText: ns_string(detail)]; } for (ix, answer) in answers .iter() .enumerate() .filter(|&(ix, _)| Some(ix) != latest_non_cancel_label.map(|(ix, _)| ix)) { let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)]; let _: () = msg_send![button, setTag: ix as NSInteger]; } if let Some((ix, answer)) = latest_non_cancel_label { let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)]; let _: () = msg_send![button, setTag: ix as NSInteger]; } let (done_tx, done_rx) = oneshot::channel(); let done_tx = Cell::new(Some(done_tx)); let block = ConcreteBlock::new(move |answer: NSInteger| { if let Some(done_tx) = done_tx.take() { let _ = done_tx.send(answer.try_into().unwrap()); } }); let block = block.copy(); let native_window = self.0.lock().native_window; let executor = self.0.lock().executor.clone(); executor .spawn(async move { let _: () = msg_send![ alert, beginSheetModalForWindow: native_window completionHandler: block ]; }) .detach(); done_rx } } fn activate(&self) { let window = self.0.lock().native_window; let executor = self.0.lock().executor.clone(); executor .spawn(async move { unsafe { let _: () = msg_send![window, makeKeyAndOrderFront: nil]; } }) .detach(); } fn set_title(&mut self, title: &str) { unsafe { let app = NSApplication::sharedApplication(nil); let window = self.0.lock().native_window; let title = ns_string(title); let _: () = msg_send![app, changeWindowsItem:window title:title filename:false]; let _: () = msg_send![window, setTitle: title]; self.0.lock().move_traffic_light(); } } fn set_edited(&mut self, edited: bool) { unsafe { let window = self.0.lock().native_window; msg_send![window, setDocumentEdited: edited as BOOL] } // Changing the document edited state resets the traffic light position, // so we have to move it again. self.0.lock().move_traffic_light(); } fn show_character_palette(&self) { let this = self.0.lock(); let window = this.native_window; this.executor .spawn(async move { unsafe { let app = NSApplication::sharedApplication(nil); let _: () = msg_send![app, orderFrontCharacterPalette: window]; } }) .detach(); } fn minimize(&self) { let window = self.0.lock().native_window; unsafe { window.miniaturize_(nil); } } fn zoom(&self) { let this = self.0.lock(); let window = this.native_window; this.executor .spawn(async move { unsafe { window.zoom_(nil); } }) .detach(); } fn toggle_full_screen(&self) { let this = self.0.lock(); let window = this.native_window; this.executor .spawn(async move { unsafe { window.toggleFullScreen_(nil); } }) .detach(); } fn on_request_frame(&self, callback: Box) { self.0.as_ref().lock().request_frame_callback = Some(callback); } fn on_input(&self, callback: Box bool>) { self.0.as_ref().lock().event_callback = Some(callback); } fn on_active_status_change(&self, callback: Box) { self.0.as_ref().lock().activate_callback = Some(callback); } fn on_resize(&self, callback: Box, f32)>) { self.0.as_ref().lock().resize_callback = Some(callback); } fn on_fullscreen(&self, callback: Box) { self.0.as_ref().lock().fullscreen_callback = Some(callback); } fn on_moved(&self, callback: Box) { self.0.as_ref().lock().moved_callback = Some(callback); } fn on_should_close(&self, callback: Box bool>) { self.0.as_ref().lock().should_close_callback = Some(callback); } fn on_close(&self, callback: Box) { self.0.as_ref().lock().close_callback = Some(callback); } fn on_appearance_changed(&self, callback: Box) { self.0.lock().appearance_changed_callback = Some(callback); } fn is_topmost_for_position(&self, position: Point) -> bool { let self_borrow = self.0.lock(); let self_handle = self_borrow.handle; unsafe { let app = NSApplication::sharedApplication(nil); // Convert back to screen coordinates let screen_point = self_borrow.to_screen_ns_point(position); let window_number: NSInteger = msg_send![class!(NSWindow), windowNumberAtPoint:screen_point belowWindowWithWindowNumber:0]; let top_most_window: id = msg_send![app, windowWithWindowNumber: window_number]; let is_panel: BOOL = msg_send![top_most_window, isKindOfClass: PANEL_CLASS]; let is_window: BOOL = msg_send![top_most_window, isKindOfClass: WINDOW_CLASS]; if is_panel == YES || is_window == YES { let topmost_window = get_window_state(&*top_most_window).lock().handle; topmost_window == self_handle } else { // Someone else's window is on top false } } } fn draw(&self, scene: &crate::Scene) { let mut this = self.0.lock(); this.renderer.draw(scene); } fn sprite_atlas(&self) -> Arc { self.0.lock().renderer.sprite_atlas().clone() } /// Enables or disables the Metal HUD for debugging purposes. Note that this only works /// when the app is bundled and it has the `MetalHudEnabled` key set to true in Info.plist. fn set_graphics_profiler_enabled(&self, enabled: bool) { let this_lock = self.0.lock(); let layer = this_lock.renderer.layer(); unsafe { if enabled { let hud_properties = NSDictionary::dictionaryWithObject_forKey_( nil, ns_string("default"), ns_string("mode"), ); let _: () = msg_send![layer, setDeveloperHUDProperties: hud_properties]; } else { let _: () = msg_send![layer, setDeveloperHUDProperties: NSDictionary::dictionary(nil)]; } } } } impl HasWindowHandle for MacWindow { fn window_handle( &self, ) -> Result, raw_window_handle::HandleError> { // SAFETY: The AppKitWindowHandle is a wrapper around a pointer to an NSView unsafe { Ok(WindowHandle::borrow_raw(RawWindowHandle::AppKit( AppKitWindowHandle::new(self.0.lock().native_view.cast()), ))) } } } impl HasDisplayHandle for MacWindow { fn display_handle( &self, ) -> Result, raw_window_handle::HandleError> { // SAFETY: This is a no-op on macOS unsafe { Ok(DisplayHandle::borrow_raw(AppKitDisplayHandle::new().into())) } } } fn get_scale_factor(native_window: id) -> f32 { let factor = unsafe { let screen: id = msg_send![native_window, screen]; NSScreen::backingScaleFactor(screen) as f32 }; // We are not certain what triggers this, but it seems that sometimes // this method would return 0 (https://github.com/zed-industries/zed/issues/6412) // It seems most likely that this would happen if the window has no screen // (if it is off-screen), though we'd expect to see viewDidChangeBackingProperties before // it was rendered for real. // Regardless, attempt to avoid the issue here. if factor == 0.0 { 2. } else { factor } } unsafe fn get_window_state(object: &Object) -> Arc> { let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR); let rc1 = Arc::from_raw(raw as *mut Mutex); let rc2 = rc1.clone(); mem::forget(rc1); rc2 } unsafe fn drop_window_state(object: &Object) { let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR); Arc::from_raw(raw as *mut Mutex); } extern "C" fn yes(_: &Object, _: Sel) -> BOOL { YES } extern "C" fn dealloc_window(this: &Object, _: Sel) { unsafe { drop_window_state(this); let _: () = msg_send![super(this, class!(NSWindow)), dealloc]; } } extern "C" fn dealloc_view(this: &Object, _: Sel) { unsafe { drop_window_state(this); let _: () = msg_send![super(this, class!(NSView)), dealloc]; } } extern "C" fn handle_key_equivalent(this: &Object, _: Sel, native_event: id) -> BOOL { handle_key_event(this, native_event, true) } extern "C" fn handle_key_down(this: &Object, _: Sel, native_event: id) { handle_key_event(this, native_event, false); } // Things to test if you're modifying this method: // Brazilian layout: // - `" space` should type a quote // - `" backspace` should delete the marked quote // - `" up` should type the quote, unmark it, and move up one line // - `" cmd-down` should not leave a marked quote behind (it maybe should dispatch the key though?) // - `cmd-ctrl-space` and clicking on an emoji should type it // Czech (QWERTY) layout: // - in vim mode `option-4` should go to end of line (same as $) extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent: bool) -> BOOL { let window_state = unsafe { get_window_state(this) }; let mut lock = window_state.as_ref().lock(); let window_height = lock.content_size().height; let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) }; if let Some(PlatformInput::KeyDown(mut event)) = event { // For certain keystrokes, macOS will first dispatch a "key equivalent" event. // If that event isn't handled, it will then dispatch a "key down" event. GPUI // makes no distinction between these two types of events, so we need to ignore // the "key down" event if we've already just processed its "key equivalent" version. if key_equivalent { lock.last_key_equivalent = Some(event.clone()); } else if lock.last_key_equivalent.take().as_ref() == Some(&event) { return NO; } let keydown = event.keystroke.clone(); let fn_modifier = keydown.modifiers.function; // Ignore events from held-down keys after some of the initially-pressed keys // were released. if event.is_held { if lock.last_fresh_keydown.as_ref() != Some(&keydown) { return YES; } } else { lock.last_fresh_keydown = Some(keydown.clone()); } lock.input_during_keydown = Some(SmallVec::new()); drop(lock); // Send the event to the input context for IME handling, unless the `fn` modifier is // being pressed. // this will call back into `insert_text`, etc. if !fn_modifier { unsafe { let input_context: id = msg_send![this, inputContext]; let _: BOOL = msg_send![input_context, handleEvent: native_event]; } } let mut handled = false; let mut lock = window_state.lock(); let previous_keydown_inserted_text = lock.previous_keydown_inserted_text.take(); let mut input_during_keydown = lock.input_during_keydown.take().unwrap(); let mut callback = lock.event_callback.take(); drop(lock); let last_ime = input_during_keydown.pop(); // on a brazilian keyboard typing `"` and then hitting `up` will cause two IME // events, one to unmark the quote, and one to send the up arrow. for ime in input_during_keydown { send_to_input_handler(this, ime); } let is_composing = with_input_handler(this, |input_handler| input_handler.marked_text_range()) .flatten() .is_some(); if let Some(ime) = last_ime { if let ImeInput::InsertText(text, _) = &ime { if !is_composing { window_state.lock().previous_keydown_inserted_text = Some(text.clone()); if let Some(callback) = callback.as_mut() { event.keystroke.ime_key = Some(text.clone()); handled = callback(PlatformInput::KeyDown(event)); } } } if !handled { handled = true; send_to_input_handler(this, ime); } } else if !is_composing { let is_held = event.is_held; if let Some(callback) = callback.as_mut() { handled = callback(PlatformInput::KeyDown(event)); } if !handled && is_held { if let Some(text) = previous_keydown_inserted_text { // MacOS IME is a bit funky, and even when you've told it there's nothing to // enter it will still swallow certain keys (e.g. 'f', 'j') and not others // (e.g. 'n'). This is a problem for certain kinds of views, like the terminal. with_input_handler(this, |input_handler| { if input_handler.selected_text_range().is_none() { handled = true; input_handler.replace_text_in_range(None, &text) } }); window_state.lock().previous_keydown_inserted_text = Some(text); } } } window_state.lock().event_callback = callback; handled as BOOL } else { NO } } extern "C" fn handle_view_event(this: &Object, _: Sel, native_event: id) { let window_state = unsafe { get_window_state(this) }; let weak_window_state = Arc::downgrade(&window_state); let mut lock = window_state.as_ref().lock(); let is_active = unsafe { lock.native_window.isKeyWindow() == YES }; let window_height = lock.content_size().height; let event = unsafe { PlatformInput::from_native(native_event, Some(window_height)) }; if let Some(mut event) = event { match &mut event { PlatformInput::MouseDown( event @ MouseDownEvent { button: MouseButton::Left, modifiers: Modifiers { control: true, .. }, .. }, ) => { // On mac, a ctrl-left click should be handled as a right click. *event = MouseDownEvent { button: MouseButton::Right, modifiers: Modifiers { control: false, ..event.modifiers }, click_count: 1, ..*event }; } // Because we map a ctrl-left_down to a right_down -> right_up let's ignore // the ctrl-left_up to avoid having a mismatch in button down/up events if the // user is still holding ctrl when releasing the left mouse button PlatformInput::MouseUp( event @ MouseUpEvent { button: MouseButton::Left, modifiers: Modifiers { control: true, .. }, .. }, ) => { *event = MouseUpEvent { button: MouseButton::Right, modifiers: Modifiers { control: false, ..event.modifiers }, click_count: 1, ..*event }; } _ => {} }; match &event { PlatformInput::MouseMove( event @ MouseMoveEvent { pressed_button: Some(_), .. }, ) => { // Synthetic drag is used for selecting long buffer contents while buffer is being scrolled. // External file drag and drop is able to emit its own synthetic mouse events which will conflict // with these ones. if !lock.external_files_dragged { lock.synthetic_drag_counter += 1; let executor = lock.executor.clone(); executor .spawn(synthetic_drag( weak_window_state, lock.synthetic_drag_counter, event.clone(), )) .detach(); } } PlatformInput::MouseMove(_) if !(is_active || lock.kind == WindowKind::PopUp) => return, PlatformInput::MouseUp(MouseUpEvent { .. }) => { lock.synthetic_drag_counter += 1; } PlatformInput::ModifiersChanged(ModifiersChangedEvent { modifiers }) => { // Only raise modifiers changed event when they have actually changed if let Some(PlatformInput::ModifiersChanged(ModifiersChangedEvent { modifiers: prev_modifiers, })) = &lock.previous_modifiers_changed_event { if prev_modifiers == modifiers { return; } } lock.previous_modifiers_changed_event = Some(event.clone()); } _ => {} } if let Some(mut callback) = lock.event_callback.take() { drop(lock); callback(event); window_state.lock().event_callback = Some(callback); } } } // Allows us to receive `cmd-.` (the shortcut for closing a dialog) // https://bugs.eclipse.org/bugs/show_bug.cgi?id=300620#c6 extern "C" fn cancel_operation(this: &Object, _sel: Sel, _sender: id) { let window_state = unsafe { get_window_state(this) }; let mut lock = window_state.as_ref().lock(); let keystroke = Keystroke { modifiers: Default::default(), key: ".".into(), ime_key: None, }; let event = PlatformInput::KeyDown(KeyDownEvent { keystroke: keystroke.clone(), is_held: false, }); lock.last_fresh_keydown = Some(keystroke); if let Some(mut callback) = lock.event_callback.take() { drop(lock); callback(event); window_state.lock().event_callback = Some(callback); } } extern "C" fn window_did_change_occlusion_state(this: &Object, _: Sel, _: id) { let window_state = unsafe { get_window_state(this) }; let lock = &mut *window_state.lock(); unsafe { if lock .native_window .occlusionState() .contains(NSWindowOcclusionState::NSWindowOcclusionStateVisible) { lock.start_display_link(); } else { lock.stop_display_link(); } } } extern "C" fn window_did_resize(this: &Object, _: Sel, _: id) { let window_state = unsafe { get_window_state(this) }; window_state.as_ref().lock().move_traffic_light(); } extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) { window_fullscreen_changed(this, true); } extern "C" fn window_will_exit_fullscreen(this: &Object, _: Sel, _: id) { window_fullscreen_changed(this, false); } fn window_fullscreen_changed(this: &Object, is_fullscreen: bool) { let window_state = unsafe { get_window_state(this) }; let mut lock = window_state.as_ref().lock(); if let Some(mut callback) = lock.fullscreen_callback.take() { drop(lock); callback(is_fullscreen); window_state.lock().fullscreen_callback = Some(callback); } } extern "C" fn window_did_move(this: &Object, _: Sel, _: id) { let window_state = unsafe { get_window_state(this) }; let mut lock = window_state.as_ref().lock(); if let Some(mut callback) = lock.moved_callback.take() { drop(lock); callback(); window_state.lock().moved_callback = Some(callback); } } extern "C" fn window_did_change_screen(this: &Object, _: Sel, _: id) { let window_state = unsafe { get_window_state(this) }; let mut lock = window_state.as_ref().lock(); lock.start_display_link(); } extern "C" fn window_did_change_key_status(this: &Object, selector: Sel, _: id) { let window_state = unsafe { get_window_state(this) }; let lock = window_state.lock(); let is_active = unsafe { lock.native_window.isKeyWindow() == YES }; // When opening a pop-up while the application isn't active, Cocoa sends a spurious // `windowDidBecomeKey` message to the previous key window even though that window // isn't actually key. This causes a bug if the application is later activated while // the pop-up is still open, making it impossible to activate the previous key window // even if the pop-up gets closed. The only way to activate it again is to de-activate // the app and re-activate it, which is a pretty bad UX. // The following code detects the spurious event and invokes `resignKeyWindow`: // in theory, we're not supposed to invoke this method manually but it balances out // the spurious `becomeKeyWindow` event and helps us work around that bug. if selector == sel!(windowDidBecomeKey:) && !is_active { unsafe { let _: () = msg_send![lock.native_window, resignKeyWindow]; return; } } let executor = lock.executor.clone(); drop(lock); executor .spawn(async move { let mut lock = window_state.as_ref().lock(); if let Some(mut callback) = lock.activate_callback.take() { drop(lock); callback(is_active); window_state.lock().activate_callback = Some(callback); }; }) .detach(); } extern "C" fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL { let window_state = unsafe { get_window_state(this) }; let mut lock = window_state.as_ref().lock(); if let Some(mut callback) = lock.should_close_callback.take() { drop(lock); let should_close = callback(); window_state.lock().should_close_callback = Some(callback); should_close as BOOL } else { YES } } extern "C" fn close_window(this: &Object, _: Sel) { unsafe { let close_callback = { let window_state = get_window_state(this); let mut lock = window_state.as_ref().lock(); lock.native_window_was_closed = true; lock.close_callback.take() }; if let Some(callback) = close_callback { callback(); } let _: () = msg_send![super(this, class!(NSWindow)), close]; } } extern "C" fn make_backing_layer(this: &Object, _: Sel) -> id { let window_state = unsafe { get_window_state(this) }; let window_state = window_state.as_ref().lock(); window_state.renderer.layer_ptr() as id } extern "C" fn view_did_change_backing_properties(this: &Object, _: Sel) { let window_state = unsafe { get_window_state(this) }; let mut lock = window_state.as_ref().lock(); let scale_factor = lock.scale_factor() as f64; let size = lock.content_size(); let drawable_size: NSSize = NSSize { width: f64::from(size.width) * scale_factor, height: f64::from(size.height) * scale_factor, }; unsafe { let _: () = msg_send![ lock.renderer.layer(), setContentsScale: scale_factor ]; } lock.update_drawable_size(drawable_size); if let Some(mut callback) = lock.resize_callback.take() { let content_size = lock.content_size(); let scale_factor = lock.scale_factor(); drop(lock); callback(content_size, scale_factor); window_state.as_ref().lock().resize_callback = Some(callback); }; } extern "C" fn set_frame_size(this: &Object, _: Sel, size: NSSize) { let window_state = unsafe { get_window_state(this) }; let mut lock = window_state.as_ref().lock(); if lock.content_size() == size.into() { return; } unsafe { let _: () = msg_send![super(this, class!(NSView)), setFrameSize: size]; } let scale_factor = lock.scale_factor() as f64; let drawable_size: NSSize = NSSize { width: size.width * scale_factor, height: size.height * scale_factor, }; lock.update_drawable_size(drawable_size); drop(lock); let mut lock = window_state.lock(); if let Some(mut callback) = lock.resize_callback.take() { let content_size = lock.content_size(); let scale_factor = lock.scale_factor(); drop(lock); callback(content_size, scale_factor); window_state.lock().resize_callback = Some(callback); }; } extern "C" fn display_layer(this: &Object, _: Sel, _: id) { let window_state = unsafe { get_window_state(this) }; let mut lock = window_state.lock(); if let Some(mut callback) = lock.request_frame_callback.take() { #[cfg(not(feature = "macos-blade"))] lock.renderer.set_presents_with_transaction(true); lock.stop_display_link(); drop(lock); callback(); let mut lock = window_state.lock(); lock.request_frame_callback = Some(callback); #[cfg(not(feature = "macos-blade"))] lock.renderer.set_presents_with_transaction(false); lock.start_display_link(); } } unsafe extern "C" fn step(view: *mut c_void) { let view = view as id; let window_state = unsafe { get_window_state(&*view) }; let mut lock = window_state.lock(); if let Some(mut callback) = lock.request_frame_callback.take() { drop(lock); callback(); window_state.lock().request_frame_callback = Some(callback); } } extern "C" fn valid_attributes_for_marked_text(_: &Object, _: Sel) -> id { unsafe { msg_send![class!(NSArray), array] } } extern "C" fn has_marked_text(this: &Object, _: Sel) -> BOOL { with_input_handler(this, |input_handler| input_handler.marked_text_range()) .flatten() .is_some() as BOOL } extern "C" fn marked_range(this: &Object, _: Sel) -> NSRange { with_input_handler(this, |input_handler| input_handler.marked_text_range()) .flatten() .map_or(NSRange::invalid(), |range| range.into()) } extern "C" fn selected_range(this: &Object, _: Sel) -> NSRange { with_input_handler(this, |input_handler| input_handler.selected_text_range()) .flatten() .map_or(NSRange::invalid(), |range| range.into()) } extern "C" fn first_rect_for_character_range( this: &Object, _: Sel, range: NSRange, _: id, ) -> NSRect { let frame = unsafe { let window = get_window_state(this).lock().native_window; NSView::frame(window) }; with_input_handler(this, |input_handler| { input_handler.bounds_for_range(range.to_range()?) }) .flatten() .map_or( NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)), |bounds| { NSRect::new( NSPoint::new( frame.origin.x + bounds.origin.x.0 as f64, frame.origin.y + frame.size.height - bounds.origin.y.0 as f64 - bounds.size.height.0 as f64, ), NSSize::new(bounds.size.width.0 as f64, bounds.size.height.0 as f64), ) }, ) } extern "C" fn insert_text(this: &Object, _: Sel, text: id, replacement_range: NSRange) { unsafe { let is_attributed_string: BOOL = msg_send![text, isKindOfClass: [class!(NSAttributedString)]]; let text: id = if is_attributed_string == YES { msg_send![text, string] } else { text }; let text = CStr::from_ptr(text.UTF8String() as *mut c_char) .to_str() .unwrap(); let replacement_range = replacement_range.to_range(); send_to_input_handler( this, ImeInput::InsertText(text.to_string(), replacement_range), ); } } extern "C" fn set_marked_text( this: &Object, _: Sel, text: id, selected_range: NSRange, replacement_range: NSRange, ) { unsafe { let is_attributed_string: BOOL = msg_send![text, isKindOfClass: [class!(NSAttributedString)]]; let text: id = if is_attributed_string == YES { msg_send![text, string] } else { text }; let selected_range = selected_range.to_range(); let replacement_range = replacement_range.to_range(); let text = CStr::from_ptr(text.UTF8String() as *mut c_char) .to_str() .unwrap(); send_to_input_handler( this, ImeInput::SetMarkedText(text.to_string(), replacement_range, selected_range), ); } } extern "C" fn unmark_text(this: &Object, _: Sel) { send_to_input_handler(this, ImeInput::UnmarkText); } extern "C" fn attributed_substring_for_proposed_range( this: &Object, _: Sel, range: NSRange, _actual_range: *mut c_void, ) -> id { with_input_handler(this, |input_handler| { let range = range.to_range()?; if range.is_empty() { return None; } let selected_text = input_handler.text_for_range(range)?; unsafe { let string: id = msg_send![class!(NSAttributedString), alloc]; let string: id = msg_send![string, initWithString: ns_string(&selected_text)]; Some(string) } }) .flatten() .unwrap_or(nil) } extern "C" fn do_command_by_selector(_: &Object, _: Sel, _: Sel) {} extern "C" fn view_did_change_effective_appearance(this: &Object, _: Sel) { unsafe { let state = get_window_state(this); let mut lock = state.as_ref().lock(); if let Some(mut callback) = lock.appearance_changed_callback.take() { drop(lock); callback(); state.lock().appearance_changed_callback = Some(callback); } } } extern "C" fn accepts_first_mouse(this: &Object, _: Sel, _: id) -> BOOL { unsafe { let state = get_window_state(this); let lock = state.as_ref().lock(); if lock.kind == WindowKind::PopUp { YES } else { NO } } } extern "C" fn dragging_entered(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation { let window_state = unsafe { get_window_state(this) }; if send_new_event(&window_state, { let position = drag_event_position(&window_state, dragging_info); let paths = external_paths_from_event(dragging_info); PlatformInput::FileDrop(FileDropEvent::Entered { position, paths }) }) { window_state.lock().external_files_dragged = true; NSDragOperationCopy } else { NSDragOperationNone } } extern "C" fn dragging_updated(this: &Object, _: Sel, dragging_info: id) -> NSDragOperation { let window_state = unsafe { get_window_state(this) }; let position = drag_event_position(&window_state, dragging_info); if send_new_event( &window_state, PlatformInput::FileDrop(FileDropEvent::Pending { position }), ) { NSDragOperationCopy } else { NSDragOperationNone } } extern "C" fn dragging_exited(this: &Object, _: Sel, _: id) { let window_state = unsafe { get_window_state(this) }; send_new_event( &window_state, PlatformInput::FileDrop(FileDropEvent::Exited), ); window_state.lock().external_files_dragged = false; } extern "C" fn perform_drag_operation(this: &Object, _: Sel, dragging_info: id) -> BOOL { let window_state = unsafe { get_window_state(this) }; let position = drag_event_position(&window_state, dragging_info); if send_new_event( &window_state, PlatformInput::FileDrop(FileDropEvent::Submit { position }), ) { YES } else { NO } } fn external_paths_from_event(dragging_info: *mut Object) -> ExternalPaths { let mut paths = SmallVec::new(); let pasteboard: id = unsafe { msg_send![dragging_info, draggingPasteboard] }; let filenames = unsafe { NSPasteboard::propertyListForType(pasteboard, NSFilenamesPboardType) }; for file in unsafe { filenames.iter() } { let path = unsafe { let f = NSString::UTF8String(file); CStr::from_ptr(f).to_string_lossy().into_owned() }; paths.push(PathBuf::from(path)) } ExternalPaths(paths) } extern "C" fn conclude_drag_operation(this: &Object, _: Sel, _: id) { let window_state = unsafe { get_window_state(this) }; send_new_event( &window_state, PlatformInput::FileDrop(FileDropEvent::Exited), ); } async fn synthetic_drag( window_state: Weak>, drag_id: usize, event: MouseMoveEvent, ) { loop { Timer::after(Duration::from_millis(16)).await; if let Some(window_state) = window_state.upgrade() { let mut lock = window_state.lock(); if lock.synthetic_drag_counter == drag_id { if let Some(mut callback) = lock.event_callback.take() { drop(lock); callback(PlatformInput::MouseMove(event.clone())); window_state.lock().event_callback = Some(callback); } } else { break; } } } } fn send_new_event(window_state_lock: &Mutex, e: PlatformInput) -> bool { let window_state = window_state_lock.lock().event_callback.take(); if let Some(mut callback) = window_state { callback(e); window_state_lock.lock().event_callback = Some(callback); true } else { false } } fn drag_event_position(window_state: &Mutex, dragging_info: id) -> Point { let drag_location: NSPoint = unsafe { msg_send![dragging_info, draggingLocation] }; convert_mouse_position(drag_location, window_state.lock().content_size().height) } fn with_input_handler(window: &Object, f: F) -> Option where F: FnOnce(&mut PlatformInputHandler) -> R, { let window_state = unsafe { get_window_state(window) }; let mut lock = window_state.as_ref().lock(); if let Some(mut input_handler) = lock.input_handler.take() { drop(lock); let result = f(&mut input_handler); window_state.lock().input_handler = Some(input_handler); Some(result) } else { None } } fn send_to_input_handler(window: &Object, ime: ImeInput) { unsafe { let window_state = get_window_state(window); let mut lock = window_state.lock(); if let Some(ime_input) = lock.input_during_keydown.as_mut() { ime_input.push(ime); return; } if let Some(mut input_handler) = lock.input_handler.take() { drop(lock); match ime { ImeInput::InsertText(text, range) => { input_handler.replace_text_in_range(range, &text) } ImeInput::SetMarkedText(text, range, marked_range) => { input_handler.replace_and_mark_text_in_range(range, &text, marked_range) } ImeInput::UnmarkText => input_handler.unmark_text(), } window_state.lock().input_handler = Some(input_handler); } } } unsafe fn display_id_for_screen(screen: id) -> CGDirectDisplayID { let device_description = NSScreen::deviceDescription(screen); let screen_number_key: id = NSString::alloc(nil).init_str("NSScreenNumber"); let screen_number = device_description.objectForKey_(screen_number_key); let screen_number: NSUInteger = msg_send![screen_number, unsignedIntegerValue]; screen_number as CGDirectDisplayID }