fn create_empty_cursor()

in src/platform_impl/linux/x11/util/cursor.rs [16:45]

• 25 lines of code
• 2 McCabe index (conditional complexity)

    fn create_empty_cursor(&self) -> ffi::Cursor {
        let data = 0;
        let pixmap = unsafe {
            let screen = (self.xlib.XDefaultScreen)(self.display);
            let window = (self.xlib.XRootWindow)(self.display, screen);
            (self.xlib.XCreateBitmapFromData)(self.display, window, &data, 1, 1)
        };

        if pixmap == 0 {
            panic!("failed to allocate pixmap for cursor");
        }

        unsafe {
            // We don't care about this color, since it only fills bytes
            // in the pixmap which are not 0 in the mask.
            let mut dummy_color = MaybeUninit::uninit();
            let cursor = (self.xlib.XCreatePixmapCursor)(
                self.display,
                pixmap,
                pixmap,
                dummy_color.as_mut_ptr(),
                dummy_color.as_mut_ptr(),
                0,
                0,
            );
            (self.xlib.XFreePixmap)(self.display, pixmap);

            cursor
        }
    }