ZacharyZhang-NYandClaude Opus 5.5
f3822a8d98
NodeGraph joins Nodes by wires between typed Ports: a title drags a node, a drag out of an output lands on an input of the same kind, an input takes one wire, and a press on a wired input lifts its wire. Links join shapes on the plane and follow them, straight or at right angles, with an arrow and words; the Connector tool draws them and the Note tool drops a sticky note. A double press with Select writes on a shape. FlowChart draws Steps as ellipses, boxes and diamonds with their words. MindMap lays topics out from a root, half to each side, and asks the owner to add, remove and rename by key. Whiteboard keeps its own tool, view and selection over a board it hands back after each change. Painting moves to canvas::paint; a press on the tool layer goes through canvas::press, and the layer focuses itself and asks to delete. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
99 lines
3.2 KiB
Rust
99 lines
3.2 KiB
Rust
use std::rc::Rc;
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use gpui::{App, Bounds, Entity, EntityId, Pixels, SharedString, Window};
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use super::graph::{Edge, Node, Socket, fits, socket_at};
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pub(super) type OnNudge = Rc<dyn Fn(&SharedString, (f32, f32), &mut Window, &mut App)>;
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pub(super) type OnEdge = Rc<dyn Fn(&Edge, &mut Window, &mut App)>;
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/// A socket's reach for a press or a release, in view pixels.
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pub(super) const REACH: f32 = 10.0;
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/// What a press on the graph set going.
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#[derive(Clone, Debug, Default)]
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pub(super) enum Pull {
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#[default]
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Idle,
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Moving {
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key: SharedString,
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from: (f32, f32),
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to: (f32, f32),
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},
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Wiring {
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from: Socket,
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lifted: Option<Edge>,
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to: (f32, f32),
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},
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}
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/// The graph's own state: the pull under way and the box it covers.
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#[derive(Default)]
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pub(super) struct Hold {
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pub(super) pull: Pull,
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pub(super) bounds: Bounds<Pixels>,
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}
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/// A drag on a graph, and whose graph it is.
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pub(super) struct Pulling {
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pub(super) owner: EntityId,
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}
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/// What a finished pull asks the owner, given the graph as it was.
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pub(super) struct Ending {
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pub(super) nodes: Rc<Vec<Node>>,
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pub(super) edges: Rc<Vec<Edge>>,
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pub(super) zoom: f32,
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pub(super) on_move: Option<OnNudge>,
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pub(super) on_connect: Option<OnEdge>,
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pub(super) on_disconnect: Option<OnEdge>,
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}
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impl Ending {
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pub(super) fn run(&self, hold: &Entity<Hold>, window: &mut Window, cx: &mut App) {
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let pull = hold.update(cx, |hold, cx| {
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cx.notify();
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std::mem::take(&mut hold.pull)
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});
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match pull {
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Pull::Moving { key, from, to } => {
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let by = (to.0 - from.0, to.1 - from.1);
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if by != (0.0, 0.0) {
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log::info!("node graph: move {key} by {by:?}");
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if let Some(on_move) = &self.on_move {
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on_move(&key, by, window, cx);
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}
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}
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}
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Pull::Wiring { from, lifted, to } => {
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let target =
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socket_at(&self.nodes, to, REACH / self.zoom).filter(|to| fits(&from, to));
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let made = target.map(|to| {
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Edge::new((from.node.clone(), from.port.clone()), (to.node, to.port))
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});
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if made.is_some() && made == lifted {
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return;
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}
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let replaced = made.as_ref().and_then(|made| {
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self.edges
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.iter()
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.find(|edge| edge.to == made.to && Some(*edge) != lifted.as_ref())
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});
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for gone in lifted.iter().chain(replaced) {
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log::info!("node graph: unwire {gone:?}");
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if let Some(on_disconnect) = &self.on_disconnect {
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on_disconnect(gone, window, cx);
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}
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}
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if let Some(made) = &made {
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log::info!("node graph: wire {made:?}");
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if let Some(on_connect) = &self.on_connect {
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on_connect(made, window, cx);
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}
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}
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}
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Pull::Idle => {}
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}
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}
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}
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