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Display Nodes/Ports/Links obtained from pipewire server

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This commit is contained in:
Tom A. Wagner
2021-01-03 19:01:47 +01:00
parent 438383e92f
commit b129d84fa2
8 changed files with 666 additions and 102 deletions
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73
src/view/graph_view.rs
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@@ -1,4 +1,4 @@
use super::PipewireNode;
use super::Node;
use cairo::Context;
use glib::clone;
use gtk::{prelude::*, LayoutExt};
@@ -6,7 +6,7 @@ use std::{cell::RefCell, collections::HashMap, rc::Rc};
pub struct GraphView {
pub(crate) widget: gtk::Layout,
nodes: Rc<RefCell<HashMap<u32, PipewireNode>>>,
nodes: Rc<RefCell<HashMap<u32, Node>>>,
links: Rc<RefCell<HashMap<u32, crate::PipewireLink>>>,
}
@@ -28,16 +28,29 @@ impl GraphView {
result
}
pub fn add_node(&mut self, id: u32, node: PipewireNode) {
pub fn add_node(&mut self, id: u32, node: Node) {
// TODO: Find a free position to put the widget at.
self.widget.put(
&node.widget,
(self.nodes.borrow().len() % 4 * 400) as i32,
(self.nodes.borrow().len() / 4 * 100) as i32,
(self.nodes.borrow().len() / 4 * 400) as i32,
(self.nodes.borrow().len() % 4 * 100) as i32,
);
node.widget.show_all();
self.nodes.borrow_mut().insert(id, node);
}
pub fn add_port_to_node(&mut self, node_id: u32, port_id: u32, port: super::port::Port) {
if let Some(node) = self.nodes.borrow_mut().get_mut(&node_id) {
node.add_port(port_id, port);
} else {
// FIXME: Log this instead
eprintln!(
"Node with id {} not found when trying to add port with id {} to graph",
node_id, port_id
);
}
}
/// Add a link to the graph.
///
/// `add_link` takes three arguments: `link_id` is the id of the link as assigned by the pipewire server,
@@ -49,7 +62,7 @@ impl GraphView {
}
fn draw(
nodes: Rc<RefCell<HashMap<u32, PipewireNode>>>,
nodes: Rc<RefCell<HashMap<u32, Node>>>,
links: Rc<RefCell<HashMap<u32, crate::PipewireLink>>>,
cr: &Context,
) {
@@ -58,44 +71,40 @@ fn draw(
cr.paint();
cr.set_source_rgb(0.0, 0.0, 0.0);
for link in links.borrow().values() {
let (from_alloc, to_alloc) = get_allocs(nodes.clone(), link);
if let Some((from_alloc, to_alloc)) = get_allocs(nodes.clone(), link) {
let from_x: f64 = (from_alloc.x + from_alloc.width).into();
let from_y: f64 = (from_alloc.y + (from_alloc.height / 2)).into();
cr.move_to(from_x, from_y);
let from_x: f64 = (from_alloc.x + from_alloc.width).into();
let from_y: f64 = (from_alloc.y + (from_alloc.height / 2)).into();
cr.move_to(
from_x, from_y
);
let to_x: f64 = to_alloc.x.into();
let to_y: f64 = (to_alloc.y + (to_alloc.height / 2)).into();
cr.curve_to(from_x + 75.0, from_y, to_x - 75.0, to_y, to_x, to_y);
let to_x: f64 = to_alloc.x.into();
let to_y: f64 = (to_alloc.y + (to_alloc.height / 2)).into();
cr.curve_to(
from_x + 75.0, from_y,
to_x - 75.0, to_y,
to_x, to_y
);
cr.stroke();
cr.stroke();
} else {
eprintln!("Could not get allocation of ports of link: {:?}", link);
}
}
}
fn get_allocs(
nodes: Rc<RefCell<HashMap<u32, PipewireNode>>>,
nodes: Rc<RefCell<HashMap<u32, Node>>>,
link: &crate::PipewireLink,
) -> (gtk::Allocation, gtk::Allocation) {
) -> Option<(gtk::Allocation, gtk::Allocation)> {
println!();
let from_alloc = &nodes
.borrow()
.get(&link.node_from)
.unwrap()
.get_outgoing_port(link.port_from)
.unwrap()
.get(&link.node_from)?
.get_port(link.port_from)?
.widget
.get_allocation();
let to_alloc = &nodes
.borrow()
.get(&link.node_to)
.unwrap()
.get_ingoing_port(link.port_to)
.unwrap()
.get(&link.node_to)?
.get_port(link.port_to)?
.widget
.get_allocation();
(from_alloc.to_owned(), to_alloc.to_owned())
Some((from_alloc.to_owned(), to_alloc.to_owned()))
}