use bevy::prelude::*;
use bevy::window::RawHandleWrapper;
use objc::{msg_send, sel, sel_impl};
use rand::{distributions::Alphanumeric, Rng};
const WINDOW_CONTROL_PAD_X: f64 = 8.0;
const WINDOW_CONTROL_PAD_Y: f64 = 12.0;
pub struct UnsafeWindowHandle(pub *mut std::ffi::c_void);
unsafe impl Send for UnsafeWindowHandle {}
unsafe impl Sync for UnsafeWindowHandle {}
#[cfg(target_os = "macos")]
pub fn position_traffic_light(ns_window_handle: UnsafeWindowHandle, x: f64, y: f64) {
use cocoa::appkit::{NSView, NSWindow, NSWindowButton};
use cocoa::base::id;
use cocoa::foundation::NSRect;
let ns_window = ns_window_handle.0 as id;
unsafe {
let close = ns_window.standardWindowButton_(NSWindowButton::NSWindowCloseButton);
let miniaturize =
ns_window.standardWindowButton_(NSWindowButton::NSWindowMiniaturizeButton);
let zoom = ns_window.standardWindowButton_(NSWindowButton::NSWindowZoomButton);
let title_bar_container_view = close.superview().superview();
let close_rect: NSRect = msg_send![close, frame];
let button_height = close_rect.size.height;
let title_bar_frame_height = button_height + y;
let mut title_bar_rect = NSView::frame(title_bar_container_view);
title_bar_rect.size.height = title_bar_frame_height;
title_bar_rect.origin.y = NSView::frame(ns_window).size.height - title_bar_frame_height;
let _: () = msg_send![title_bar_container_view, setFrame: title_bar_rect];
let window_buttons = vec![close, miniaturize, zoom];
let space_between = NSView::frame(miniaturize).origin.x - NSView::frame(close).origin.x;
for (i, button) in window_buttons.into_iter().enumerate() {
let mut rect: NSRect = NSView::frame(button);
rect.origin.x = x + (i as f64 * space_between);
button.setFrameOrigin(rect.origin);
}
}
}
#[allow(dead_code)]
#[cfg(target_os = "macos")]
#[derive(Debug)]
struct WindowState {
window: Window,
}
#[cfg(target_os = "macos")]
pub fn setup_traffic_light_positioner(
raw_handle_wrapper_query: Query<(Entity, &Window, &RawHandleWrapper)>,
) {
use cocoa::appkit::NSWindow;
use cocoa::base::{id, BOOL};
use cocoa::foundation::NSUInteger;
use objc::runtime::{Object, Sel};
use raw_window_handle::RawWindowHandle;
use std::ffi::c_void;
for (_entity, window, raw_handle_wrapper) in raw_handle_wrapper_query.iter() {
if let RawWindowHandle::AppKit(appkit_handle) = raw_handle_wrapper.window_handle {
let ns_view_ptr: *mut c_void = appkit_handle.ns_view.as_ptr();
unsafe {
let ns_view: id = ns_view_ptr as id;
let ns_window_ptr = msg_send![ns_view, window];
let ns_window = ns_window_ptr as id;
ns_window.setTitlebarAppearsTransparent_(true);
ns_window.setStyleMask_(
ns_window.styleMask()
| cocoa::appkit::NSWindowStyleMask::NSFullSizeContentViewWindowMask,
);
position_traffic_light(
UnsafeWindowHandle(ns_window_ptr),
WINDOW_CONTROL_PAD_X,
WINDOW_CONTROL_PAD_Y,
);
let current_delegate: id = ns_window.delegate();
extern "C" fn on_window_should_close(this: &Object, _cmd: Sel, sender: id) -> BOOL {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
msg_send![super_del, windowShouldClose: sender]
}
}
extern "C" fn on_window_will_close(this: &Object, _cmd: Sel, notification: id) {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
let _: () = msg_send![super_del, windowWillClose: notification];
}
}
extern "C" fn on_window_did_resize(this: &Object, _cmd: Sel, notification: id) {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
let _: () = msg_send![super_del, windowDidResize: notification];
}
}
extern "C" fn on_window_did_move(this: &Object, _cmd: Sel, notification: id) {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
let _: () = msg_send![super_del, windowDidMove: notification];
}
}
extern "C" fn on_window_did_change_backing_properties(
this: &Object,
_cmd: Sel,
notification: id,
) {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
let _: () =
msg_send![super_del, windowDidChangeBackingProperties: notification];
}
}
extern "C" fn on_window_did_become_key(this: &Object, _cmd: Sel, notification: id) {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
let _: () = msg_send![super_del, windowDidBecomeKey: notification];
}
}
extern "C" fn on_window_did_resign_key(this: &Object, _cmd: Sel, notification: id) {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
let _: () = msg_send![super_del, windowDidResignKey: notification];
}
}
extern "C" fn on_dragging_entered(
this: &Object,
_cmd: Sel,
notification: id,
) -> BOOL {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
msg_send![super_del, draggingEntered: notification]
}
}
extern "C" fn on_prepare_for_drag_operation(
this: &Object,
_cmd: Sel,
notification: id,
) -> BOOL {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
msg_send![super_del, prepareForDragOperation: notification]
}
}
extern "C" fn on_perform_drag_operation(
this: &Object,
_cmd: Sel,
sender: id,
) -> BOOL {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
msg_send![super_del, performDragOperation: sender]
}
}
extern "C" fn on_conclude_drag_operation(
this: &Object,
_cmd: Sel,
notification: id,
) {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
let _: () = msg_send![super_del, concludeDragOperation: notification];
}
}
extern "C" fn on_dragging_exited(this: &Object, _cmd: Sel, notification: id) {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
let _: () = msg_send![super_del, draggingExited: notification];
}
}
extern "C" fn on_window_will_use_full_screen_presentation_options(
this: &Object,
_cmd: Sel,
window: id,
proposed_options: NSUInteger,
) -> NSUInteger {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
msg_send![super_del, window: window willUseFullScreenPresentationOptions: proposed_options]
}
}
extern "C" fn on_window_did_enter_full_screen(
this: &Object,
_cmd: Sel,
notification: id,
) {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
let _: () = msg_send![super_del, windowDidEnterFullScreen: notification];
}
}
extern "C" fn on_window_will_enter_full_screen(
this: &Object,
_cmd: Sel,
notification: id,
) {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
let _: () = msg_send![super_del, windowWillEnterFullScreen: notification];
}
}
extern "C" fn on_window_did_exit_full_screen(
this: &Object,
_cmd: Sel,
notification: id,
) {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
let _: () = msg_send![super_del, windowDidExitFullScreen: notification];
}
}
extern "C" fn on_window_will_exit_full_screen(
this: &Object,
_cmd: Sel,
notification: id,
) {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
let _: () = msg_send![super_del, windowWillExitFullScreen: notification];
}
}
extern "C" fn on_window_did_fail_to_enter_full_screen(
this: &Object,
_cmd: Sel,
window: id,
) {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
let _: () = msg_send![super_del, windowDidFailToEnterFullScreen: window];
}
}
extern "C" fn on_effective_appearance_did_change(
this: &Object,
_cmd: Sel,
notification: id,
) {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
let _: () =
msg_send![super_del, effectiveAppearanceDidChange: notification];
}
}
extern "C" fn on_effective_appearance_did_changed_on_main_thread(
this: &Object,
_cmd: Sel,
notification: id,
) {
unsafe {
let super_del: id = *this.get_ivar("super_delegate");
let _: () = msg_send![
super_del,
effectiveAppearanceDidChangedOnMainThread: notification
];
}
}
let app_state = WindowState {
window: window.clone(),
};
let app_box = Box::into_raw(Box::new(app_state)) as *mut c_void;
let random_str: String = rand::thread_rng()
.sample_iter(&Alphanumeric)
.take(20)
.map(char::from)
.collect();
let delegate_name = format!("windowDelegate_{}", random_str);
ns_window.setDelegate_(cocoa::delegate!(&delegate_name, {
window: id = ns_window,
app_box: *mut c_void = app_box,
toolbar: id = cocoa::base::nil,
super_delegate: id = current_delegate,
(windowShouldClose:) => on_window_should_close as extern fn(&Object, Sel, id) -> BOOL,
(windowWillClose:) => on_window_will_close as extern fn(&Object, Sel, id),
(windowDidResize:) => on_window_did_resize as extern fn(&Object, Sel, id),
(windowDidMove:) => on_window_did_move as extern fn(&Object, Sel, id),
(windowDidChangeBackingProperties:) => on_window_did_change_backing_properties as extern fn(&Object, Sel, id),
(windowDidBecomeKey:) => on_window_did_become_key as extern fn(&Object, Sel, id),
(windowDidResignKey:) => on_window_did_resign_key as extern fn(&Object, Sel, id),
(draggingEntered:) => on_dragging_entered as extern fn(&Object, Sel, id) -> BOOL,
(prepareForDragOperation:) => on_prepare_for_drag_operation as extern fn(&Object, Sel, id) -> BOOL,
(performDragOperation:) => on_perform_drag_operation as extern fn(&Object, Sel, id) -> BOOL,
(concludeDragOperation:) => on_conclude_drag_operation as extern fn(&Object, Sel, id),
(draggingExited:) => on_dragging_exited as extern fn(&Object, Sel, id),
(window:willUseFullScreenPresentationOptions:) => on_window_will_use_full_screen_presentation_options as extern fn(&Object, Sel, id, NSUInteger) -> NSUInteger,
(windowDidEnterFullScreen:) => on_window_did_enter_full_screen as extern fn(&Object, Sel, id),
(windowWillEnterFullScreen:) => on_window_will_enter_full_screen as extern fn(&Object, Sel, id),
(windowDidExitFullScreen:) => on_window_did_exit_full_screen as extern fn(&Object, Sel, id),
(windowWillExitFullScreen:) => on_window_will_exit_full_screen as extern fn(&Object, Sel, id),
(windowDidFailToEnterFullScreen:) => on_window_did_fail_to_enter_full_screen as extern fn(&Object, Sel, id),
(effectiveAppearanceDidChange:) => on_effective_appearance_did_change as extern fn(&Object, Sel, id),
(effectiveAppearanceDidChangedOnMainThread:) => on_effective_appearance_did_changed_on_main_thread as extern fn(&Object, Sel, id)
}))
}
}
}
}