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use std::{any::Any, cell::RefCell, collections::BTreeMap, rc::Rc};
use crate::{css_engine::*, prelude::*, shell::WindowShell, utils::*};
pub use self::clear::*;
pub use self::default::*;
pub use self::font_icon::*;
pub use self::image::*;
pub use self::pipeline::*;
pub use self::rectangle::*;
pub use self::text::*;
mod clear;
mod default;
mod font_icon;
mod image;
mod pipeline;
mod rectangle;
mod text;
pub trait RenderObject: Any {
fn render(
&self,
shell: &mut WindowShell<WindowAdapter>,
entity: Entity,
ecm: &mut EntityComponentManager<Tree, StringComponentStore>,
render_objects: &RefCell<BTreeMap<Entity, Box<dyn RenderObject>>>,
layouts: &Rc<RefCell<BTreeMap<Entity, Box<dyn Layout>>>>,
handlers: &Rc<RefCell<EventHandlerMap>>,
states: &Rc<RefCell<BTreeMap<Entity, Box<dyn State>>>>,
theme: &ThemeValue,
offsets: &mut BTreeMap<Entity, (f64, f64)>,
debug: bool,
) {
let mut global_position = Point::default();
if let Some(parent) = ecm.entity_store().parent[&entity] {
if let Some(offset) = offsets.get(&parent) {
global_position = Point::new(offset.0, offset.1);
}
}
if let Ok(visibility) = ecm
.component_store()
.get::<Visibility>("visibility", entity)
{
if *visibility != Visibility::Visible {
return;
}
} else {
return;
}
shell.render_context_2_d().begin_path();
shell.render_context_2_d().set_alpha(
*ecm.component_store()
.get::<f32>("opacity", entity)
.unwrap_or(&1.0),
);
let clip = *ecm.component_store().get::<bool>("clip", entity).unwrap();
if clip {
if let Ok(bounds) = ecm.component_store().get::<Rectangle>("bounds", entity) {
shell.render_context_2_d().save();
shell.render_context_2_d().rect(
global_position.x + bounds.x(),
global_position.y + bounds.y(),
bounds.width(),
bounds.height(),
);
shell.render_context_2_d().clip();
}
}
self.render_self(
&mut Context::new(
(entity, ecm),
shell,
&theme,
render_objects,
&mut layouts.borrow_mut(),
&mut handlers.borrow_mut(),
&states,
&mut BTreeMap::new(),
),
&global_position,
);
let mut global_pos = (0.0, 0.0);
if let Ok(bounds) = ecm.component_store().get::<Rectangle>("bounds", entity) {
global_pos = (
global_position.x + bounds.x(),
global_position.y + bounds.y(),
);
offsets.insert(entity, global_pos);
}
if let Ok(g_pos) = ecm
.component_store_mut()
.get_mut::<Point>("position", entity)
{
g_pos.x = global_pos.0;
g_pos.y = global_pos.1;
}
self.render_children(
shell,
entity,
ecm,
render_objects,
layouts,
handlers,
states,
theme,
offsets,
debug,
);
shell.render_context_2_d().close_path();
if clip {
shell.render_context_2_d().restore();
}
if debug {
if let Ok(bounds) = ecm.component_store().get::<Rectangle>("bounds", entity) {
let selector = Selector::from("debug-border");
let brush = theme.brush("border-color", &selector).unwrap();
shell.render_context_2_d().begin_path();
shell.render_context_2_d().set_stroke_style(brush);
shell.render_context_2_d().stroke_rect(
global_position.x + bounds.x(),
global_position.y + bounds.y(),
bounds.width(),
bounds.height(),
);
shell.render_context_2_d().close_path();
}
}
}
fn render_self(&self, _: &mut Context<'_>, _: &Point) {}
fn render_children(
&self,
shell: &mut WindowShell<WindowAdapter>,
entity: Entity,
ecm: &mut EntityComponentManager<Tree, StringComponentStore>,
render_objects: &RefCell<BTreeMap<Entity, Box<dyn RenderObject>>>,
layouts: &Rc<RefCell<BTreeMap<Entity, Box<dyn Layout>>>>,
handlers: &Rc<RefCell<EventHandlerMap>>,
states: &Rc<RefCell<BTreeMap<Entity, Box<dyn State>>>>,
theme: &ThemeValue,
offsets: &mut BTreeMap<Entity, (f64, f64)>,
debug: bool,
) {
for index in 0..ecm.entity_store().children[&entity].len() {
let child = ecm.entity_store().children[&entity][index];
if let Some(render_object) = render_objects.borrow().get(&child) {
render_object.render(
shell,
child,
ecm,
render_objects,
layouts,
handlers,
states,
theme,
offsets,
debug,
);
}
}
}
}