Bevy and egui_tiles

bevy_and_egui_tiles.rs

use bevy::prelude::*;
use bevy::window::PrimaryWindow;
use bevy_inspector_egui::{
    bevy_egui::{EguiPlugin, EguiContexts}
};
use egui;


fn main() {
    App::new()
        .insert_resource(ClearColor(Color::rgb(100.0/255.0, 200.0/255.0, 150.0/255.0)))
        .insert_resource(Msaa::Sample4)
        .add_plugins(DefaultPlugins.set(WindowPlugin{
            primary_window: Some(Window{
                title: "Bevy and egui_tiles".into(),
                ..default()
            }),
            ..default()
        }))
        .add_plugins(EguiPlugin)
        .add_systems(Update, bevy::window::close_on_esc)
        .add_systems(Startup, simple_setup)
        .add_systems(Update, ui_example_system)
        .run();
}


struct Pane {
    nr: usize,
}

struct TreeBehavior {}

impl egui_tiles::Behavior<Pane> for TreeBehavior {
    fn tab_title_for_pane(&mut self, pane: &Pane) -> egui::WidgetText {
        format!("Pane {}", pane.nr).into()
    }

    fn pane_ui(
        &mut self,
        ui: &mut egui::Ui,
        _tile_id: egui_tiles::TileId,
        pane: &mut Pane,
    ) -> egui_tiles::UiResponse {
        // Give each pane a unique color:
        let color = egui::epaint::Hsva::new(0.103 * pane.nr as f32, 0.5, 0.5, 1.0);
        ui.painter().rect_filled(ui.max_rect(), 0.0, color);

        ui.label(format!("The contents of pane {}.", pane.nr));

        // You can make your pane draggable like so:
        if ui
            .add(egui::Button::new("Drag me!").sense(egui::Sense::drag()))
            .drag_started()
        {
            egui_tiles::UiResponse::DragStarted
        } else {
            egui_tiles::UiResponse::None
        }
    }
}

fn create_tree() -> egui_tiles::Tree<Pane> {
    let mut next_view_nr = 0;
    let mut gen_pane = || {
        let pane = Pane { nr: next_view_nr };
        next_view_nr += 1;
        pane
    };

    let mut tiles = egui_tiles::Tiles::default();

    let mut tabs = vec![];
    tabs.push({
        let children = (0..7).map(|_| tiles.insert_pane(gen_pane())).collect();
        tiles.insert_horizontal_tile(children)
    });
    tabs.push({
        let cells = (0..11).map(|_| tiles.insert_pane(gen_pane())).collect();
        tiles.insert_grid_tile(cells)
    });
    tabs.push(tiles.insert_pane(gen_pane()));

    let root = tiles.insert_tab_tile(tabs);

    egui_tiles::Tree::new(root, tiles)
}

fn ui_example_system(mut contexts: EguiContexts) {

    let mut tree = create_tree();

    egui::CentralPanel::default().show(contexts.ctx_mut(), |ui| {
        let mut behavior = TreeBehavior {};
        tree.ui(&mut behavior, ui);
    });
}

fn simple_setup(mut commands: Commands){
    commands.spawn((
        Camera3dBundle::default(),
    ));

}