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use bevy::prelude::*;
use kayak_ui::prelude::{widgets::*, *};
#[derive(Component, Default, PartialEq, Clone)]
struct MyWidget;
impl Widget for MyWidget {}
#[derive(Component, Default, PartialEq, Clone)]
struct MyWidgetState {
pub show_window: bool,
}
#[derive(Bundle)]
struct MyWidgetBundle {
count: MyWidget,
styles: KStyle,
widget_name: WidgetName,
}
impl Default for MyWidgetBundle {
fn default() -> Self {
Self {
count: MyWidget::default(),
styles: KStyle::default(),
widget_name: MyWidget::default().get_name(),
}
}
}
fn my_widget_render(
In((widget_context, entity)): In<(KayakWidgetContext, Entity)>,
mut commands: Commands,
query: Query<&MyWidgetState>,
) -> bool {
let state_entity = widget_context.use_state(&mut commands, entity, MyWidgetState::default());
if let Ok(state) = query.get(state_entity) {
let parent_id = Some(entity);
rsx! {
<ElementBundle>
<KButtonBundle
button={KButton {
text: "Show Window".into(),
user_styles: KStyle {
left: Units::Stretch(1.0).into(),
right: Units::Stretch(1.0).into(),
..Default::default()
}
}}
on_event={OnEvent::new(
move |In((event_dispatcher_context, _, mut event, _entity)): In<(EventDispatcherContext, WidgetState, Event, Entity)>,
mut query: Query<&mut MyWidgetState>| {
event.prevent_default();
event.stop_propagation();
match event.event_type {
EventType::Click(..) => {
if let Ok(mut state) = query.get_mut(state_entity) {
state.show_window = true;
}
}
_ => {}
}
(event_dispatcher_context, event)
},
)}
/>
{if state.show_window {
constructor! {
<WindowBundle
window={KWindow {
title: "Conditional widget rendering!".into(),
draggable: true,
initial_position: Vec2::new(10.0, 10.0),
size: Vec2::new(300.0, 250.0),
..KWindow::default()
}}
>
<KButtonBundle
button={KButton { text: "Hide Window".into(), ..Default::default() }}
on_event={OnEvent::new(
move |In((event_dispatcher_context, _, mut event, _entity)): In<(EventDispatcherContext, WidgetState, Event, Entity)>,
mut query: Query<&mut MyWidgetState>| {
match event.event_type {
EventType::Click(..) => {
event.prevent_default();
event.stop_propagation();
if let Ok(mut state) = query.get_mut(state_entity) {
state.show_window = false;
}
}
_ => {}
}
(event_dispatcher_context, event)
},
)}
/>
</WindowBundle>
}
}}
</ElementBundle>
}
}
true
}
fn startup(
mut commands: Commands,
mut font_mapping: ResMut<FontMapping>,
asset_server: Res<AssetServer>,
) {
font_mapping.set_default(asset_server.load("lato-light.kayak_font"));
// Camera 2D forces a clear pass in bevy.
// We do this because our scene is not rendering anything else.
commands.spawn(Camera2dBundle::default());
commands.spawn(UICameraBundle::new());
let mut widget_context = KayakRootContext::new();
let parent_id = None;
widget_context.add_widget_data::<MyWidget, MyWidgetState>();
widget_context.add_widget_system(
MyWidget::default().get_name(),
widget_update::<MyWidget, MyWidgetState>,
my_widget_render,
);
rsx! {
<KayakAppBundle>
<MyWidgetBundle />
</KayakAppBundle>
}
commands.insert_resource(widget_context);
}
fn main() {
App::new()
.insert_resource(ClearColor(Color::rgb(0.0, 0.0, 0.0)))
.add_plugins(DefaultPlugins)
.add_plugin(KayakContextPlugin)
.add_plugin(KayakWidgets)
.add_startup_system(startup)
.run()
}