use { r3vi::{ view::{ InnerViewPort, Observer, ObserverBroadcast, OuterViewPort, View, index::*, }, projection::projection_helper::*, }, crate::{TerminalAtom, TerminalView}, cgmath::Point2, std::sync::Arc, std::sync::RwLock, }; //<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>> pub struct TerminalCompositor { layers: Vec>, cast: Arc>>, proj_helper: ProjectionHelper, } //<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>> impl TerminalCompositor { pub fn new(port: InnerViewPort) -> Arc> { let comp = Arc::new(RwLock::new(TerminalCompositor { layers: Vec::new(), cast: port.get_broadcast(), proj_helper: ProjectionHelper::new(port.0.update_hooks.clone()), })); comp.write().unwrap().proj_helper.set_proj(&comp); port.set_view(Some(comp.clone())); comp } pub fn push(&mut self, v: OuterViewPort) { let idx = self.layers.len(); self.layers.push( self.proj_helper .new_index_arg(idx, v, |s: &mut Self, area| { s.cast.notify(area); }), ); } } //<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>> impl View for TerminalCompositor { type Msg = IndexArea>; } impl IndexView> for TerminalCompositor { type Item = TerminalAtom; fn get(&self, pos: &Point2) -> Option { let mut atom = None; for layer in self.layers.iter() { match (atom, layer.get(pos)) { (None, next) => atom = next, (Some(last), Some(next)) => atom = Some(next.add_style_back(last.style)), _ => {} } } atom } fn area(&self) -> IndexArea> { let mut area = IndexArea::Empty; for layer in self.layers.iter() { area = area.union(layer.area()); } area } }