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718 lines
25 KiB
Rust

/// TODO:
/// * Text box w/ "reset" button
/// * Textbox (ReadWrite)
/// * Move code to submodules
///
use bevy::{
asset::Asset,
input::mouse::{MouseScrollUnit, MouseWheel},
prelude::*,
window::PrimaryWindow,
};
use std::cmp::PartialEq;
#[derive(Debug, Component, PartialEq)]
pub struct TargetAsset<T: Asset> {
pub handle: Handle<T>,
}
#[derive(Debug, Component, PartialEq)]
pub struct TargetEntity {
pub entity: Entity,
}
/// UI Plugin
#[derive(Default)]
pub struct GameUiPlugin {
pub enable_alerts: bool,
}
impl Plugin for GameUiPlugin {
fn build(&self, app: &mut App) {
app.add_systems(PreUpdate, create_titles)
.add_systems(
Update,
(
manage_titles,
manage_button_interaction,
manage_select_active,
manage_cursor,
manage_scroll,
manage_collapse_hiding,
manage_collapse_active,
show_child_number,
manage_sort,
),
)
.add_systems(PostUpdate, close_window);
if self.enable_alerts {
app.add_event::<Alert>()
.add_systems(Startup, init_alerts)
.add_systems(Update, spawn_alert);
}
}
}
pub use title::*;
mod title {
use super::*;
#[derive(Debug, Component, Default)]
pub struct Title {
pub text: String,
pub font: Option<Handle<Font>>,
}
#[derive(Debug)]
pub struct TitleBarBase {
bg_color: Color,
}
impl TitleBarBase {
pub fn new(bg_color: Color) -> Self {
Self { bg_color }
}
pub fn bundle(&self) -> NodeBundle {
NodeBundle {
style: Style {
padding: UiRect::all(Val::Px(1.0)),
margin: UiRect::all(Val::Px(1.0)),
border: UiRect::all(Val::Px(1.0)),
flex_direction: FlexDirection::Row,
align_items: AlignItems::Center,
align_content: AlignContent::Center,
justify_content: JustifyContent::SpaceBetween,
..default()
},
background_color: self.bg_color.into(),
border_color: Color::BLACK.into(),
..default()
}
}
}
#[derive(Debug, Component)]
pub struct Note {
pub text: String,
}
#[derive(Debug, Component)]
pub struct TitleText;
#[derive(Debug, Component)]
pub struct Minimize {
pub target: Entity,
}
#[derive(Debug, Component)]
pub struct Close {
pub target: Entity,
}
pub fn create_titles(
events: Query<
(
Entity,
&Title,
Option<&Note>,
Option<&Minimize>,
Option<&Close>,
),
Added<Title>,
>,
mut commands: Commands,
) {
events.for_each(|(entity, title, note, minimize, close)| {
commands.entity(entity).with_children(|parent| {
let style = match &title.font {
Some(handle) => TextStyle {
color: Color::BLACK,
font: handle.clone(),
..default()
},
None => TextStyle {
color: Color::BLACK,
..default()
},
};
parent.spawn((
TextBundle {
text: Text {
sections: vec![
TextSection {
value: title.text.clone(),
style,
},
TextSection {
value: note
.unwrap_or(&Note {
text: String::new(),
})
.text
.clone(),
style: TextStyle {
color: Color::BLACK,
..default()
},
},
],
..default()
},
style: Style {
margin: UiRect::all(Val::Px(3.0)),
padding: UiRect::all(Val::Px(3.0)),
left: Val::Px(0.0),
..default()
},
..default()
},
Sorting(0),
TitleText,
));
if minimize.is_some() || close.is_some() {
parent
.spawn(NodeBundle {
style: Style {
// border: UiRect::all(Val::Px(1.0)),
// margin: UiRect::all(Val::Px(1.0)),
// padding: UiRect::all(Val::Px(1.0)),
right: Val::Px(0.0),
..default()
},
background_color: Color::WHITE.into(),
border_color: Color::BLACK.into(),
..default()
})
.with_children(|parent| {
if let Some(Minimize { target }) = minimize {
parent
.spawn((
ButtonBundle {
style: Style {
border: UiRect::all(Val::Px(1.0)),
// margin: UiRect::all(Val::Px(1.0)),
padding: UiRect::all(Val::Px(1.0)),
..default()
},
background_color: Color::WHITE.into(),
border_color: Color::BLACK.into(),
..default()
},
Collapse { target: *target },
Active,
))
.with_children(|parent| {
parent.spawn(TextBundle::from_section(
"-",
TextStyle {
color: Color::BLACK,
..default()
},
));
});
}
if let Some(Close { target }) = close {
parent
.spawn((
ButtonBundle {
style: Style {
border: UiRect::all(Val::Px(1.0)),
// margin: UiRect::all(Val::Px(1.0)),
padding: UiRect::all(Val::Px(1.0)),
..default()
},
background_color: Color::WHITE.into(),
border_color: Color::BLACK.into(),
..default()
},
Close { target: *target },
))
.with_children(|parent| {
parent.spawn(TextBundle::from_section(
"x",
TextStyle {
color: Color::BLACK,
..default()
},
));
});
}
});
}
});
});
}
pub fn manage_titles(
events: Query<(&Title, Option<&Note>, &Children), Or<(Changed<Title>, Changed<Note>)>>,
mut texts: Query<&mut Text, With<TitleText>>,
) {
events.iter().for_each(|(title, note, children)| {
children.iter().for_each(|child| {
if let Ok(mut text) = texts.get_mut(*child) {
let style = match &title.font {
Some(handle) => TextStyle {
color: Color::BLACK,
font: handle.clone(),
..default()
},
None => TextStyle {
color: Color::BLACK,
..default()
},
};
*text = Text {
sections: vec![
TextSection {
value: title.text.clone(),
style: style,
},
TextSection {
value: note
.unwrap_or(&Note {
text: String::new(),
})
.text
.clone(),
style: TextStyle {
color: Color::BLACK,
..default()
},
},
],
..default()
}
}
})
})
}
pub fn close_window(
events: Query<(&Interaction, &Close), (With<Button>, Changed<Interaction>)>,
mut commands: Commands,
) {
events
.iter()
.filter(|(&interaction, _)| interaction == Interaction::Pressed)
.for_each(|(_, Close { target })| {
commands.entity(*target).despawn_recursive();
});
}
}
pub use collapse::*;
mod collapse {
use super::*;
#[derive(Debug, Component)]
pub struct Collapse {
pub target: Entity,
}
pub fn manage_collapse_active(
events: Query<
(Entity, Option<&Active>, &Interaction),
(Changed<Interaction>, With<Button>, With<Collapse>),
>,
mut commands: Commands,
) {
events
.iter()
.filter(|(_, _, &interaction)| interaction == Interaction::Pressed)
.for_each(|(entity, active, _)| {
match active {
Some(_) => {
commands.entity(entity).remove::<Active>();
}
None => {
// Set this butotn to active
commands.entity(entity).insert(Active);
}
};
});
}
pub fn manage_collapse_hiding(
added: Query<Entity, (Added<Active>, With<Collapse>)>,
mut removed: RemovedComponents<Active>,
collapses: Query<&Collapse, With<Button>>,
mut styles: Query<&mut Style>,
) {
// Removed collapse, hide the target entity
removed.iter().for_each(|e| {
if let Ok(Collapse { target }) = collapses.get(e) {
if let Ok(mut style) = styles.get_mut(*target) {
style.display = Display::None;
}
}
});
// Added collapse, display the target entity
added.iter().for_each(|e| {
if let Ok(Collapse { target }) = collapses.get(e) {
if let Ok(mut style) = styles.get_mut(*target) {
style.display = Display::Flex;
}
}
});
}
pub fn show_child_number(
events: Query<(Entity, &Children), (Changed<Children>, With<Node>)>,
mut tabs: Query<(Entity, &Collapse)>,
mut commands: Commands,
) {
// Any time a widget changes
events.iter().for_each(|(entity, children)| {
// Find any tabs which have this as a target
tabs.iter_mut()
.find_map(|(button, collapse)| (entity == collapse.target).then_some(button))
.into_iter()
.for_each(|button| {
let num_children = children.len();
commands.entity(button).insert(Note {
text: format!("({})", num_children),
});
});
});
}
}
pub use buttons::*;
mod buttons {
use super::*;
#[derive(Debug, Component)]
pub struct Active;
pub fn manage_button_interaction(
events: Query<
(Entity, &Interaction, Option<&Active>),
(Changed<Interaction>, With<Button>),
>,
added_active: Query<Entity, Added<Active>>,
mut removed_active: RemovedComponents<Active>,
mut bg_colors: Query<&mut BackgroundColor>,
) {
removed_active.iter().for_each(|e| {
if let Ok(mut bg_color) = bg_colors.get_mut(e) {
*bg_color = Color::WHITE.into();
}
});
added_active.for_each(|e| {
if let Ok(mut bg_color) = bg_colors.get_mut(e) {
*bg_color = Color::ORANGE.into();
}
});
events.for_each(|(entity, interaction, active)| {
if let Ok(mut bg_color) = bg_colors.get_mut(entity) {
match active {
Some(_) => match interaction {
Interaction::None => *bg_color = Color::ORANGE.into(),
Interaction::Pressed => *bg_color = Color::YELLOW.into(),
Interaction::Hovered => *bg_color = Color::RED.into(),
},
None => match interaction {
Interaction::None => *bg_color = Color::WHITE.into(),
Interaction::Pressed => *bg_color = Color::WHITE.into(),
Interaction::Hovered => *bg_color = Color::GRAY.into(),
},
}
}
})
}
/// Marks a container node as having single- or multi-active components
#[derive(Debug, Component)]
pub enum Select {
Multi,
Single,
Action,
}
pub fn manage_select_active(
events: Query<
(Entity, &Parent, Option<&Active>, &Interaction),
(With<Button>, Changed<Interaction>),
>,
selects: Query<(&Select, &Children)>,
mut commands: Commands,
) {
events
.iter()
.for_each(|(entity, parent, active, interaction)| {
selects
.get(parent.get())
.iter()
.for_each(|(select, children)| match interaction {
Interaction::Pressed => match select {
Select::Multi | Select::Action => {
if active.is_some() {
commands.entity(entity).remove::<Active>();
} else {
commands.entity(entity).insert(Active);
}
}
Select::Single => {
if active.is_some() {
commands.entity(entity).remove::<Active>();
} else {
commands.entity(entity).insert(Active);
}
children.iter().filter(|&child| *child != entity).for_each(
|&child| {
commands.entity(child).remove::<Active>();
},
);
}
},
// A silly hack to get actions to maintain the active tag for 1+ frames
Interaction::None => match select {
Select::Action => {
commands.entity(entity).remove::<Active>();
}
_ => (),
},
_ => (),
});
});
}
/// run_if helper for simple button->trigger action
pub fn activated<T: Component>(events: Query<Entity, (With<T>, Added<Active>)>) -> bool {
events.iter().any(|_| true)
}
pub fn event<T: Event>(mut events: EventReader<T>) -> bool {
events.iter().len() > 0
}
}
pub use scroll::*;
mod scroll {
use super::*;
#[derive(Debug, Component)]
pub struct Scroll;
pub fn manage_scroll(
mut events: EventReader<MouseWheel>,
mut query: Query<(&Interaction, &Parent, &Children, &mut Style), With<Scroll>>,
interactions: Query<&Interaction>,
) {
events.iter().for_each(|MouseWheel { unit, y, .. }| {
query
.iter_mut()
.filter(|(&interaction, parent, children, _)| {
let self_hover = interaction == Interaction::Hovered;
let child_hover = children.iter().any(|&child| {
if let Ok(&interaction) = interactions.get(child) {
interaction == Interaction::Hovered
} else {
false
}
});
let parent_hover = interactions
.get(parent.get())
.map_or(false, |&interaction| interaction == Interaction::Hovered);
self_hover || child_hover || parent_hover
})
.for_each(|(_, _, _, mut style)| {
let factor = 8.0;
let val = match unit {
MouseScrollUnit::Line => match style.top {
Val::Px(v) => v + (y * factor),
_ => (*y) * factor,
},
MouseScrollUnit::Pixel => match style.top {
Val::Px(v) => v + (y * factor),
_ => (*y) * factor,
},
};
style.top = Val::Px(val.min(0.0));
});
});
}
}
use cursor::*;
mod cursor {
use super::*;
pub fn manage_cursor(
events: Query<&Interaction, Changed<Interaction>>,
mut window: Query<&mut Window, With<PrimaryWindow>>,
) {
events.for_each(|interaction| {
let mut win = window.single_mut();
win.cursor.icon = match interaction {
Interaction::None => CursorIcon::Default,
Interaction::Hovered => CursorIcon::Hand,
Interaction::Pressed => CursorIcon::Grabbing,
}
})
}
}
pub use sort::*;
mod sort {
use std::cmp::Ordering;
use super::*;
#[derive(Debug, Component)]
pub struct Sorting(pub u8);
pub fn manage_sort(
mut events: Query<&mut Children, Changed<Children>>,
sorting: Query<Option<&Sorting>>,
) {
events.iter_mut().for_each(|mut children| {
children.sort_by(|&a, &b| match (sorting.get(a), sorting.get(b)) {
(Ok(Some(Sorting(ord_a))), Ok(Some(Sorting(ord_b)))) => {
if ord_a > ord_b {
Ordering::Greater
} else if ord_a < ord_b {
Ordering::Less
} else {
Ordering::Equal
}
}
(Ok(Some(_)), Err(_)) | (Ok(Some(_)), Ok(None)) => Ordering::Less,
(Err(_), Ok(Some(_))) | (Ok(None), Ok(Some(_))) => Ordering::Greater,
_ => Ordering::Equal,
});
})
}
}
pub use alert::*;
pub mod alert {
use super::*;
#[derive(Debug, Event)]
pub enum Alert {
Info(String),
Warn(String),
Danger(String),
}
#[derive(Debug, Component)]
pub struct AlertsWidget;
pub fn init_alerts(mut commands: Commands) {
commands
.spawn(NodeBundle {
style: Style {
top: Val::Px(0.0),
right: Val::Px(0.0),
position_type: PositionType::Absolute,
width: Val::Percent(33.0),
padding: UiRect::all(Val::Px(1.0)),
margin: UiRect::all(Val::Px(1.0)),
border: UiRect::all(Val::Px(1.0)),
flex_direction: FlexDirection::Column,
justify_items: JustifyItems::Center,
..default()
},
border_color: Color::WHITE.into(),
..default()
})
.with_children(|parent| {
let container = parent
.spawn((
NodeBundle {
style: Style {
padding: UiRect::all(Val::Px(1.0)),
margin: UiRect::all(Val::Px(1.0)),
border: UiRect::all(Val::Px(1.0)),
flex_direction: FlexDirection::Column,
justify_items: JustifyItems::Center,
..default()
},
border_color: Color::WHITE.into(),
..default()
},
AlertsWidget,
))
.id();
parent.spawn((
TitleBarBase::new(Color::WHITE).bundle(),
Title {
text: "Alerts".into(),
..default()
},
Minimize { target: container },
Sorting(0),
));
});
}
pub fn spawn_alert(
mut events: EventReader<Alert>,
root: Query<Entity, With<AlertsWidget>>,
mut commands: Commands,
) {
events.iter().for_each(|alert| {
info!("Processing alert {:?}", alert);
let (color, text) = match alert {
Alert::Info(text) => (Color::BLUE, text),
Alert::Warn(text) => (Color::ORANGE, text),
Alert::Danger(text) => (Color::RED, text),
};
commands.entity(root.single()).with_children(|parent| {
parent
.spawn(NodeBundle {
style: Style {
width: Val::Percent(100.0),
padding: UiRect::all(Val::Px(1.0)),
margin: UiRect::all(Val::Px(1.0)),
border: UiRect::all(Val::Px(2.0)),
flex_direction: FlexDirection::Column,
justify_self: JustifySelf::Center,
..default()
},
background_color: Color::WHITE.into(),
border_color: color.into(),
..default()
})
.with_children(|parent| {
parent.spawn((
TitleBarBase::new(color).bundle(),
Title {
text: "Heads up!".into(),
..default()
},
Close {
target: parent.parent_entity(),
},
Sorting(0),
));
parent.spawn(TextBundle::from_section(
text,
TextStyle {
color: Color::BLACK.into(),
..default()
},
));
});
});
});
}
}
use dragndrop::*;
pub mod dragndrop {
use super::*;
#[derive(Debug, Component)]
struct DragNDrop;
pub fn dragndrop() {
todo!()
}
}