use cocoa::{
appkit::NSImage,
base::{id, nil},
foundation::{NSDictionary, NSPoint, NSString},
};
use objc::runtime::{Sel, NO};
use std::{cell::RefCell, ptr::null_mut};
use crate::window::CursorIcon;
pub enum Cursor {
Default,
Native(&'static str),
Undocumented(&'static str),
WebKit(&'static str),
}
impl From<CursorIcon> for Cursor {
fn from(cursor: CursorIcon) -> Self {
match cursor {
CursorIcon::Default => Cursor::Default,
CursorIcon::Arrow => Cursor::Native("arrowCursor"),
CursorIcon::Hand => Cursor::Native("pointingHandCursor"),
CursorIcon::Grab => Cursor::Native("openHandCursor"),
CursorIcon::Grabbing => Cursor::Native("closedHandCursor"),
CursorIcon::Text => Cursor::Native("IBeamCursor"),
CursorIcon::VerticalText => Cursor::Native("IBeamCursorForVerticalLayout"),
CursorIcon::Copy => Cursor::Native("dragCopyCursor"),
CursorIcon::Alias => Cursor::Native("dragLinkCursor"),
CursorIcon::NotAllowed | CursorIcon::NoDrop => Cursor::Native("operationNotAllowedCursor"),
CursorIcon::ContextMenu => Cursor::Native("contextualMenuCursor"),
CursorIcon::Crosshair => Cursor::Native("crosshairCursor"),
CursorIcon::EResize => Cursor::Native("resizeRightCursor"),
CursorIcon::NResize => Cursor::Native("resizeUpCursor"),
CursorIcon::WResize => Cursor::Native("resizeLeftCursor"),
CursorIcon::SResize => Cursor::Native("resizeDownCursor"),
CursorIcon::EwResize | CursorIcon::ColResize => Cursor::Native("resizeLeftRightCursor"),
CursorIcon::NsResize | CursorIcon::RowResize => Cursor::Native("resizeUpDownCursor"),
CursorIcon::Help => Cursor::Undocumented("_helpCursor"),
CursorIcon::ZoomIn => Cursor::Undocumented("_zoomInCursor"),
CursorIcon::ZoomOut => Cursor::Undocumented("_zoomOutCursor"),
CursorIcon::NeResize => Cursor::Undocumented("_windowResizeNorthEastCursor"),
CursorIcon::NwResize => Cursor::Undocumented("_windowResizeNorthWestCursor"),
CursorIcon::SeResize => Cursor::Undocumented("_windowResizeSouthEastCursor"),
CursorIcon::SwResize => Cursor::Undocumented("_windowResizeSouthWestCursor"),
CursorIcon::NeswResize => Cursor::Undocumented("_windowResizeNorthEastSouthWestCursor"),
CursorIcon::NwseResize => Cursor::Undocumented("_windowResizeNorthWestSouthEastCursor"),
CursorIcon::Wait | CursorIcon::Progress => Cursor::Undocumented("busyButClickableCursor"),
CursorIcon::Move | CursorIcon::AllScroll => Cursor::WebKit("move"),
CursorIcon::Cell => Cursor::WebKit("cell"),
}
}
}
impl Default for Cursor {
fn default() -> Self {
Cursor::Default
}
}
impl Cursor {
pub unsafe fn load(&self) -> id {
match self {
Cursor::Default => null_mut(),
Cursor::Native(cursor_name) => {
let sel = Sel::register(cursor_name);
msg_send![class!(NSCursor), performSelector: sel]
}
Cursor::Undocumented(cursor_name) => {
let class = class!(NSCursor);
let sel = Sel::register(cursor_name);
let sel = if msg_send![class, respondsToSelector: sel] {
sel
} else {
warn!("Cursor `{}` appears to be invalid", cursor_name);
sel!(arrowCursor)
};
msg_send![class, performSelector: sel]
}
Cursor::WebKit(cursor_name) => load_webkit_cursor(cursor_name),
}
}
}
pub unsafe fn load_webkit_cursor(cursor_name: &str) -> id {
static CURSOR_ROOT: &str = "/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/Resources/cursors";
let cursor_root = NSString::alloc(nil).init_str(CURSOR_ROOT);
let cursor_name = NSString::alloc(nil).init_str(cursor_name);
let cursor_pdf = NSString::alloc(nil).init_str("cursor.pdf");
let cursor_plist = NSString::alloc(nil).init_str("info.plist");
let key_x = NSString::alloc(nil).init_str("hotx");
let key_y = NSString::alloc(nil).init_str("hoty");
let cursor_path: id = msg_send![cursor_root, stringByAppendingPathComponent: cursor_name];
let pdf_path: id = msg_send![cursor_path, stringByAppendingPathComponent: cursor_pdf];
let info_path: id = msg_send![cursor_path, stringByAppendingPathComponent: cursor_plist];
let image = NSImage::alloc(nil).initByReferencingFile_(pdf_path);
let info = NSDictionary::dictionaryWithContentsOfFile_(nil, info_path);
let x = info.valueForKey_(key_x);
let y = info.valueForKey_(key_y);
let point = NSPoint::new(msg_send![x, doubleValue], msg_send![y, doubleValue]);
let cursor: id = msg_send![class!(NSCursor), alloc];
msg_send![cursor,
initWithImage:image
hotSpot:point
]
}
pub unsafe fn invisible_cursor() -> id {
static CURSOR_BYTES: &[u8] = &[
0x47, 0x49, 0x46, 0x38, 0x39, 0x61, 0x10, 0x00, 0x10, 0x00, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x21, 0xF9, 0x04, 0x01, 0x00, 0x00, 0x00, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00,
0x10, 0x00, 0x10, 0x00, 0x00, 0x02, 0x0E, 0x84, 0x8F, 0xA9, 0xCB, 0xED, 0x0F, 0xA3, 0x9C, 0xB4,
0xDA, 0x8B, 0xB3, 0x3E, 0x05, 0x00, 0x3B,
];
thread_local! {
static CURSOR_OBJECT: RefCell<id> = RefCell::new(nil);
}
CURSOR_OBJECT.with(|cursor_obj| {
if *cursor_obj.borrow() == nil {
let cursor_data: id = msg_send![class!(NSData),
dataWithBytesNoCopy:CURSOR_BYTES as *const [u8]
length:CURSOR_BYTES.len()
freeWhenDone:NO
];
let ns_image: id = msg_send![class!(NSImage), alloc];
let _: id = msg_send![ns_image, initWithData: cursor_data];
let cursor: id = msg_send![class!(NSCursor), alloc];
*cursor_obj.borrow_mut() =
msg_send![cursor, initWithImage:ns_image hotSpot: NSPoint::new(0.0, 0.0)];
}
*cursor_obj.borrow()
})
}