use crate::misc::Offset;
use egui::{Button, Id, InnerResponse, Ui};
use std::ops::BitXorAssign;

/// Creates an area ontop of a widget with an y offset
pub fn widgets_ontop<R>(
    ui: &egui::Ui,
    id: Id,
    re: &egui::Response,
    y_offset: f32,
    add_contents: impl FnOnce(&mut egui::Ui) -> R,
) -> InnerResponse<R> {
    let area = egui::Area::new(id)
        .fixed_pos(re.rect.min.offset_y(y_offset))
        .order(egui::Order::Foreground);

    area.show(ui.ctx(), |ui| add_contents(ui))
}

/// A toggle button that XORs its state when clicked.
/// Shows different hover text based on current state.
pub fn toggle_button(
    ui: &mut Ui,
    state: &mut bool,
    label: &str,
    enabled_tip: &str,
    disabled_tip: &str,
) {
    state.bitxor_assign(
        ui.add(Button::new(label))
            .on_hover_text(if *state { enabled_tip } else { disabled_tip })
            .clicked(),
    );
}