bevy_immediate 0.8.0

A simple, fast, and modular immediate mode UI library for Bevy
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130

use bevy::ui::{FlexDirection, Node, Val};
use bevy::utils::default;
use bevy::{
    ecs::{
        component::Component,
        resource::Resource,
        system::{ResMut, SystemParam},
    },
    ui_render::GlobalUiDebugOptions,
};
use bevy_immediate::{
    Imm,
    attach::{BevyImmediateAttachPlugin, ImmediateAttach},
    ui::{CapsUi, clicked::ImmUiClicked, selected::ImmUiSelected, text::ImmUiText},
};
use strum::IntoEnumIterator;

use crate::styles::{self, button_bundle, fill_parent_node, text_style};

pub struct MainMenuExamplePlugin;

impl bevy::app::Plugin for MainMenuExamplePlugin {
    fn build(&self, app: &mut bevy::app::App) {
        app.insert_resource(CurrentExample::BevyWidgets);

        app.add_plugins(BevyImmediateAttachPlugin::<CapsUi, MenuUiRoot>::new());
    }
}

#[derive(Component)]
pub struct MenuUiRoot;

#[derive(SystemParam)]
pub struct Params<'w> {
    current_example: ResMut<'w, CurrentExample>,
    debug_options: ResMut<'w, GlobalUiDebugOptions>,
}

impl ImmediateAttach<CapsUi> for MenuUiRoot {
    type Params = Params<'static>;

    fn construct(ui: &mut Imm<CapsUi>, params: &mut Params) {
        ui.ch()
            .on_spawn_insert(|| Node {
                flex_direction: FlexDirection::Column,
                align_items: bevy::ui::AlignItems::Stretch,
                ..fill_parent_node()
            })
            .add(|ui| {
                ui.ch()
                    .on_spawn_insert(styles::title_text_style)
                    .on_spawn_text("Demo");
                ui.ch()
                    .on_spawn_insert(styles::text_style)
                    .on_spawn_text("bevy_immediate");

                ui.ch().on_spawn_insert(|| Node {
                    height: Val::Px(10.),
                    ..default()
                });

                for example in CurrentExample::iter() {
                    let mut button = ui
                        .ch()
                        .on_spawn_insert(styles::button_bundle)
                        .selected_set(example == *params.current_example)
                        .add(|ui| {
                            ui.ch()
                                .on_spawn_insert(styles::centered_text_style)
                                .on_spawn_text_fn(|| example.title().to_string());
                        });

                    if button.clicked() {
                        *params.current_example = example;
                    }
                }

                ui.ch().on_spawn_insert(|| Node {
                    flex_grow: 1.,
                    ..default()
                });

                let mut button = ui
                    .ch()
                    .on_spawn_insert(button_bundle)
                    .selected_set(params.debug_options.enabled)
                    .add(|ui| {
                        ui.ch().on_spawn_insert(text_style).text("Debug");
                    });
                if button.clicked() {
                    params.debug_options.enabled = !params.debug_options.enabled;
                }
            });
    }
}

#[derive(Resource, Hash, Clone, Copy, PartialEq, Eq, strum::EnumIter)]
pub enum CurrentExample {
    HelloWorld,
    BevyWidgets,
    FeathersGallery,
    BevyScrollbar,
    Tooltip,
    Anchored,
    FloatingWindows,
    WidgetUse,
    ExtensionUse,
    PowerUser,
    HotPatching,
    TextEdit,
}

impl CurrentExample {
    pub fn title(&self) -> &'static str {
        match self {
            CurrentExample::HelloWorld => "Hello World",
            CurrentExample::BevyWidgets => "Bevy Widgets",
            CurrentExample::BevyScrollbar => "Bevy Scrollareas",
            CurrentExample::Tooltip => "Tooltips",
            CurrentExample::Anchored => "Anchored UI",
            CurrentExample::FloatingWindows => "Floating windows",
            CurrentExample::WidgetUse => "Widget usage",
            CurrentExample::ExtensionUse => "Extension usage",
            CurrentExample::PowerUser => "Power user",
            CurrentExample::HotPatching => "Hot patching",
            CurrentExample::TextEdit => "Text edit",
            CurrentExample::FeathersGallery => "Feathers gallery",
        }
    }
}