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use cgmath::Point2;
use std::{
cell::RefCell,
default::default,
fmt::{Debug, Formatter, Result},
rc::Rc,
};
use stretch::{geometry, node::Node, style};
use crate::prelude::Singleton;
use crate::{
foundation::{Helper, MouseEvent},
material::Theme,
rendering::backend::{WidgetRenderFactory, WidgetRenderHolder, WidgetRenderer},
services::LayoutSystem,
};
use super::{Element, WidgetComponent};
/// A utility class for building Material buttons that depend on the ambient ButtonTheme and Theme
///
/// Additional Signals: none
pub struct ThemeElement {
component: Rc<RefCell<WidgetComponent>>,
/// The label the button displays
pub child: Box<dyn Element>,
// The concrete renderer for this control instance
pub renderer: Option<Rc<WidgetRenderHolder<Self>>>,
// The node in layout system
pub node: Node,
}
impl Debug for ThemeElement {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
f.debug_struct("ButtonElement").finish()
}
}
impl ThemeElement {
pub fn new(widget: &Theme) -> Self {
let node = LayoutSystem::new_node(
style::Style {
padding: geometry::Rect {
start: style::Dimension::Points(2.0),
end: style::Dimension::Points(2.0),
top: style::Dimension::Points(2.0),
bottom: style::Dimension::Points(2.0),
},
size: geometry::Size {
width: style::Dimension::Percent(1.0),
height: style::Dimension::Percent(1.0),
},
..default()
},
vec![],
)
.unwrap();
let component = WidgetComponent::get(widget.key.id());
// if widget.onclick.is_some() {
// // onmouseup.listen(options.onclick);
// }
let child = widget.child.create_element();
if let Some(child) = child.node() {
let child_style = LayoutSystem::style(child).unwrap();
LayoutSystem::set_style(
child,
style::Style {
size: geometry::Size {
width: style::Dimension::Percent(1.0),
height: style::Dimension::Percent(1.0),
},
..child_style
},
)
.unwrap();
LayoutSystem::set_children(node, vec![child]).unwrap()
};
Self {
component,
child,
renderer: WidgetRenderFactory::global().get::<Self>(),
node,
}
}
}
impl AsRef<RefCell<WidgetComponent>> for ThemeElement {
fn as_ref(&self) -> &RefCell<WidgetComponent> {
self.component.as_ref()
}
}
impl Element for ThemeElement {
fn mousedown(&self, e: &mut MouseEvent) {
// self.state.borrow_mut().mouse_down = true;
// let component = self.component.borrow();
// component.onmousedown.emit(e);
log::info!("ThemeElement clicked");
// self.state.borrow_mut().mouse_down = true;
// let component = self.component.borrow();
// component.onmousedown.emit(e);
// TODO: remove this check
let inside = {
let comp = self.component.borrow();
Helper::in_rect(e.x as f32, e.y as f32, comp.x, comp.y, comp.w, comp.h)
};
// Scaffold should used as root widget after MaterialApp
// so all events should be inside
if inside {
let x = e.x as f32;
let y = e.y as f32;
if self.child.contains(x, y) {
self.child.mousedown(e);
}
// if self.title.contains(x, y) {
// log::info!("Is an Title");
// self.title.mousedown(e);
// }
// if self.flexible_space.contains(x, y) {
// // log::info!("Is an FAB");
// self.flexible_space.mousedown(e);
// }
// for action in self.actions.iter() {
// if action.contains(x, y) {
// log::info!("Is an ACTION");
// action.mousedown(e);
// }
// }
// if self.drawer.contains(x, y) {
// // log::info!("Is an Drawer");
// self.drawer.mousedown(e);
// }
}
}
fn render(&self) {
// {
// let comp = self.component.borrow();
// assert!(
// !comp.destroyed,
// "Widget was already destroyed but is being interacted with"
// );
// if comp.renderable {
// comp.onrender.emit(&());
// }
// }
if let Some(ref render) = self.renderer {
render.render(self);
}
// for child in comp.children.iter() {
// if let Some(widget) = child.widget() {
// widget.render();
// }
// }
// center do not have a render, so we render the child
self.child.render();
}
fn node(&self) -> Option<Node> {
Some(self.node)
}
fn relayout(&self, origin: Point2<f32>) {
let update_childs = match LayoutSystem::layout(self.node) {
Ok(layout) => {
let mut comp = self.as_ref().borrow_mut();
comp.x = layout.location.x + origin.x;
comp.y = layout.location.y + origin.y;
comp.w = layout.size.width;
comp.h = layout.size.height;
true
}
Err(e) => {
log::error!("{}", e);
false
}
};
if update_childs {
let comp = self.as_ref().borrow();
self.child.relayout(Point2 {
x: comp.x,
y: comp.y,
});
}
}
}