bevy_asky 0.5.0

A simple question-and-answer UI middleware 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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213

//! Helper traits for creating common widgets

use bevy::{
    ecs::{relationship::RelatedSpawnerCommands, system::EntityCommands},
    prelude::*,
    // ui::Val::*
};

/// Color palette for widgets
#[derive(Debug, Clone, Resource)]
pub struct Palette {
    /// Border color
    pub border: Color,
    /// Background color
    pub background: Color,
    /// Text color
    pub text: Color,
}

impl Default for Palette {
    fn default() -> Self {
        Self {
            // interaction: InteractionPalette::default(),
            border: Color::BLACK,
            background: Color::WHITE.mix(&Color::BLACK, 0.8),
            text: Color::WHITE,
        }
    }
}

/// An extension trait for spawning UI widgets.
pub trait Widgets {
    /// Spawn a simple button with text.
    fn button(&mut self, text: impl Into<String>, palette: &Palette) -> EntityCommands<'_>;
    /// Spawn a column.
    fn column(&mut self) -> EntityCommands<'_>;
    /// Spawn a column whose elements can wrap around.
    fn column_wrap(&mut self) -> EntityCommands<'_>;

    // Spawn a simple header label. Bigger than [`Widgets::label`].
    // fn header(&mut self, text: impl Into<String>, palette: &Palette) -> EntityCommands;

    // Spawn a simple text label.
    // fn label(&mut self, text: impl Into<String>, palette: &Palette) -> EntityCommands;
}

impl<T: Spawn> Widgets for T {
    fn button(&mut self, text: impl Into<String>, palette: &Palette) -> EntityCommands<'_> {
        let mut entity = self.spawn((
            Name::new("Button"),
            Button,
            Node {
                margin: UiRect {
                    // right: Val::Px(5.0),
                    left: Val::Px(10.0),
                    ..default()
                },
                // width: Px(200.0),
                // height: Px(65.0),
                border: UiRect::all(Val::Px(2.0)),
                justify_content: JustifyContent::Center,
                align_items: AlignItems::Center,
                ..default()
            },
            BorderColor::all(palette.border),
            BackgroundColor(palette.background),
        ));
        entity.with_children(|children| {
            children.spawn((
                Name::new("Button Text"),
                Text::new(text),
                TextColor(palette.text),
            ));
        });
        entity
    }

    fn column(&mut self) -> EntityCommands<'_> {
        self.spawn(Node {
            flex_direction: FlexDirection::Column,
            ..default()
        })
    }

    fn column_wrap(&mut self) -> EntityCommands<'_> {
        self.spawn(Node {
            flex_direction: FlexDirection::Column,
            flex_wrap: FlexWrap::Wrap,
            ..default()
        })
    }

    // fn header(&mut self, text: impl Into<String>, palette: &Palette) -> EntityCommands {
    //     let mut entity = self.spawn((
    //         Name::new("Header"),
    //         NodeBundle {
    //             style: Style {
    //                 width: Px(500.0),
    //                 height: Px(65.0),
    //                 justify_content: JustifyContent::Center,
    //                 align_items: AlignItems::Center,
    //                 ..default()
    //             },
    //             background_color: palette.background.into(),
    //             ..default()
    //         },
    //     ));
    //     entity.with_children(|children| {
    //         children.spawn((
    //             Name::new("Header Text"),
    //             TextBundle::from_section(
    //                 text,
    //                 TextStyle {
    //                     font_size: 40.0,
    //                     color: palette.header,
    //                     ..default()
    //                 },
    //             ),
    //         ));
    //     });
    //     entity
    // }

    // fn label(&mut self, text: impl Into<String>, palette: &Palette) -> EntityCommands {
    //     let mut entity = self.spawn((
    //         Name::new("Label"),
    //         NodeBundle {
    //             style: Style {
    //                 width: Px(500.0),
    //                 justify_content: JustifyContent::Center,
    //                 align_items: AlignItems::Center,
    //                 ..default()
    //             },
    //             ..default()
    //         },
    //     ));
    //     entity.with_children(|children| {
    //         children.spawn((
    //             Name::new("Label Text"),
    //             TextBundle::from_section(
    //                 text,
    //                 TextStyle {
    //                     font_size: 24.0,
    //                     color: palette.label,
    //                     ..default()
    //                 },
    //             ),
    //         ));
    //     });
    //     entity
    // }
}

// /// An extension trait for spawning UI containers.
// pub trait Containers {
//     /// Spawns a root node that covers the full screen
//     /// and centers its content horizontally and vertically.
//     fn ui_root(&mut self) -> EntityCommands;
// }

// impl Containers for Commands<'_, '_> {
//     fn ui_root(&mut self) -> EntityCommands {
//         self.spawn((
//             Name::new("UI Root"),
//             NodeBundle {
//                 style: Style {
//                     width: Percent(100.0),
//                     height: Percent(100.0),
//                     justify_content: JustifyContent::Center,
//                     align_items: AlignItems::Center,
//                     flex_direction: FlexDirection::Column,
//                     row_gap: Px(10.0),
//                     position_type: PositionType::Absolute,
//                     ..default()
//                 },
//                 ..default()
//             },
//         ))
//     }
// }

/// An internal trait for types that can spawn entities.
/// This is here so that [`Widgets`] can be implemented on all types that
/// are able to spawn entities.
/// Ideally, this trait should be [part of Bevy itself](https://github.com/bevyengine/bevy/issues/14231).
trait Spawn {
    fn spawn<B: Bundle>(&mut self, bundle: B) -> EntityCommands<'_>;
}

impl Spawn for Commands<'_, '_> {
    fn spawn<B: Bundle>(&mut self, bundle: B) -> EntityCommands<'_> {
        self.spawn(bundle)
    }
}

impl<R: bevy::ecs::relationship::Relationship> Spawn for RelatedSpawnerCommands<'_, R> {
    fn spawn<B: Bundle>(&mut self, bundle: B) -> EntityCommands<'_> {
        self.spawn(bundle)
    }
}

impl Spawn for EntityCommands<'_> {
    fn spawn<B: Bundle>(&mut self, bundle: B) -> EntityCommands<'_> {
        self.insert(bundle);
        self.reborrow()
    }
}

// impl Spawn for ChildBuilder<'_> {
//     fn spawn<B: Bundle>(&mut self, bundle: B) -> EntityCommands {
//         ChildBuild::spawn(self, bundle)
//     }
// }