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graphmanager: add link name

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Allow to set and display a link name
This commit is contained in:
Stéphane Cerveau 2023-08-11 11:34:47 +02:00
parent 5de51d5565
commit aaf47503fe
3 changed files with 107 additions and 46 deletions
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96
src/graphmanager/graphview.rs
View file

@ -144,7 +144,7 @@ mod imp {
let target = widget.pick(x, y, gtk::PickFlags::DEFAULT).expect("port pick() did not return a widget");
if let Some(target) = target.ancestor(Port::static_type()) {
let port = target.dynamic_cast::<Port>().expect("click event is not on the Port");
let node = port.ancestor(Node::static_type()).expect("Unable to reach parent").dynamic_cast::<Node>().expect("Unable to cast to Node");
let node = port.ancestor(Node::static_type()).expect("Unable to reach parent").dynamic_cast::<Node>().expect("Unable to cast to Node");
obj.emit_by_name::<()>("port-right-clicked", &[&port.id(), &node.id(), &graphene::Point::new(x as f32,y as f32)]);
} else if let Some(target) = target.ancestor(Node::static_type()) {
let node = target.dynamic_cast::<Node>().expect("click event is not on the Node");
@ -204,7 +204,6 @@ mod imp {
node_to.id(),
port_from.id(),
port_to.id(),
true,
));
}
widget.set_selected_port(None);
@ -225,7 +224,13 @@ mod imp {
info!("double clicked node id {}", node.id());
obj.emit_by_name::<()>("node-double-clicked", &[&node.id(), &graphene::Point::new(x as f32,y as f32)]);
}
} else if _n_press % 2 == 0 {
if let Some(link) = widget.point_on_link(&graphene::Point::new(x.floor() as f32,y.floor() as f32)) {
info!("double clicked link id {}", link.id());
obj.emit_by_name::<()>("link-double-clicked", &[&link.id(), &graphene::Point::new(x as f32,y as f32)]);
}
}
// Click to something else than a port
widget.set_selected_port(None);
}
@ -289,6 +294,9 @@ mod imp {
Signal::builder("port-added")
.param_types([u32::static_type(), u32::static_type(), u32::static_type()])
.build(),
Signal::builder("link-double-clicked")
.param_types([u32::static_type(), graphene::Point::static_type()])
.build(),
]
});
SIGNALS.as_ref()
@ -310,8 +318,9 @@ mod imp {
if let Some((from_x, from_y, to_x, to_y)) = self.link_coordinates(link) {
self.draw_link(
snapshot,
link.active,
link.active(),
link.selected(),
link.name().as_str(),
link.thickness as f64,
&graphene::Point::new(from_x as f32, from_y as f32),
&graphene::Point::new(to_x as f32, to_y as f32),
@ -335,6 +344,7 @@ mod imp {
snapshot,
false,
false,
"",
2.0,
&graphene::Point::new(from_x as f32, from_y as f32),
&graphene::Point::new(to_x as f32, to_y as f32),
@ -403,12 +413,13 @@ mod imp {
let (to_x, to_y) = self.link_to_coordinates(link.node_to, link.port_to);
Some((from_x, from_y, to_x, to_y))
}
#[allow(clippy::too_many_arguments)]
fn draw_link(
&self,
snapshot: &gtk::Snapshot,
active: bool,
selected: bool,
name: &str,
thickness: f64,
point_from: &graphene::Point,
point_to: &graphene::Point,
@ -441,6 +452,13 @@ mod imp {
if let Err(e) = link_cr.stroke() {
warn!("Failed to draw graphview links: {}", e);
};
warn!("the link name is {}", name);
if !name.is_empty() {
let x = (point_from.x() + point_to.x()) / 2.0 + 20.0;
let y = (point_from.y() + point_to.y()) / 2.0 + 20.0;
link_cr.move_to(x as f64, y as f64);
let _ = link_cr.show_text(name);
}
}
}
}
@ -739,7 +757,6 @@ impl GraphView {
node_to_id: u32,
port_from_id: u32,
port_to_id: u32,
active: bool,
) -> Link {
self.create_link_with_id(
self.next_link_id(),
@ -747,7 +764,6 @@ impl GraphView {
node_to_id,
port_from_id,
port_to_id,
active,
)
}
@ -766,7 +782,7 @@ impl GraphView {
pub fn set_link_state(&self, link_id: u32, active: bool) {
let private = imp::GraphView::from_obj(self);
if let Some(link) = private.links.borrow_mut().get_mut(&link_id) {
link.active = active;
link.set_active(active);
self.queue_draw();
} else {
warn!("Link state changed on unknown link (id={})", link_id);
@ -781,12 +797,37 @@ impl GraphView {
let links = private.links.borrow();
let links_list: Vec<_> = links
.iter()
.filter(|(_, link)| link.active == link_state)
.filter(|(_, link)| link.active() == link_state)
.map(|(_, node)| node.clone())
.collect();
links_list
}
/// Get the link with the specified link id inside the graphview.
///
/// Returns `None` if the link is not in the graphview.
pub fn link(&self, id: u32) -> Option<Link> {
let private = imp::GraphView::from_obj(self);
private.links.borrow().get(&id).cloned()
}
/// Set the link state with ink id and link state (boolean)
///
pub fn set_link_name(&self, link_id: u32, name: &str) {
let private = imp::GraphView::from_obj(self);
let mut updated = false;
if let Some(link) = private.links.borrow_mut().get_mut(&link_id) {
link.set_name(name);
self.queue_draw();
updated = true;
} else {
warn!("Link name changed on unknown link (id={})", link_id);
}
if updated {
self.graph_updated();
}
}
/// Retrieves the node/port id connected to the input port id
///
pub fn port_connected_to(&self, port_id: u32) -> Option<(u32, u32)> {
@ -799,6 +840,18 @@ impl GraphView {
None
}
/// Retrieves the link connected to the port id
///
pub fn port_link(&self, port_id: u32) -> Option<Link> {
let private = imp::GraphView::from_obj(self);
for (_id, link) in private.links.borrow().iter() {
if port_id == link.port_from {
return Some(link.clone());
}
}
None
}
/// Delete the selected element (link, node, port)
///
pub fn delete_selected(&self) {
@ -891,7 +944,8 @@ impl GraphView {
.attr("node_to", &link.node_to.to_string())
.attr("port_from", &link.port_from.to_string())
.attr("port_to", &link.port_to.to_string())
.attr("active", &link.active.to_string()),
.attr("name", &link.name())
.attr("active", &link.active().to_string()),
)?;
writer.write(XMLWEvent::end_element())?;
}
@ -1022,14 +1076,21 @@ impl GraphView {
let active: &String = attrs
.get::<String>(&String::from("active"))
.expect("Unable to find link state");
current_link = Some(self.create_link_with_id(
let default_value = String::from("");
let name: &String = attrs
.get::<String>(&String::from("name"))
.unwrap_or(&default_value);
let link = self.create_link_with_id(
id.parse::<u32>().unwrap(),
node_from.parse::<u32>().unwrap(),
node_to.parse::<u32>().unwrap(),
port_from.parse::<u32>().unwrap(),
port_to.parse::<u32>().unwrap(),
active.parse::<bool>().unwrap(),
));
);
link.set_active(active.parse::<bool>().unwrap());
link.set_name(name.parse::<String>().unwrap().as_str());
current_link = Some(link);
}
_ => warn!("name unknown: {}", name),
}
@ -1113,17 +1174,8 @@ impl GraphView {
node_to_id: u32,
port_from_id: u32,
port_to_id: u32,
active: bool,
) -> Link {
Link::new(
link_id,
node_from_id,
node_to_id,
port_from_id,
port_to_id,
active,
false,
)
Link::new(link_id, node_from_id, node_to_id, port_from_id, port_to_id)
}
fn remove_link(&self, id: u32) {

49
src/graphmanager/link.rs
View file

@ -8,7 +8,7 @@
// SPDX-License-Identifier: GPL-3.0-only
use super::SelectionExt;
use std::cell::Cell;
use std::cell::{Cell, RefCell};
#[derive(Debug, Clone)]
pub struct Link {
@ -17,44 +17,49 @@ pub struct Link {
pub node_to: u32,
pub port_from: u32,
pub port_to: u32,
pub active: bool,
pub active: Cell<bool>,
pub selected: Cell<bool>,
pub thickness: u32,
pub name: RefCell<String>,
}
impl Link {
pub fn name(&self) -> String {
self.name.borrow().clone()
}
pub fn set_name(&self, name: &str) {
self.name.replace(name.to_string());
}
pub fn id(&self) -> u32 {
self.id
}
pub fn active(&self) -> bool {
self.active.get()
}
pub fn set_active(&self, active: bool) {
self.active.set(active)
}
}
pub trait LinkExt {
/// Create a new link
///
fn new(
id: u32,
node_from: u32,
node_to: u32,
port_from: u32,
port_to: u32,
active: bool,
selected: bool,
) -> Self;
fn new(id: u32, node_from: u32, node_to: u32, port_from: u32, port_to: u32) -> Self;
}
impl LinkExt for Link {
fn new(
id: u32,
node_from: u32,
node_to: u32,
port_from: u32,
port_to: u32,
active: bool,
selected: bool,
) -> Self {
fn new(id: u32, node_from: u32, node_to: u32, port_from: u32, port_to: u32) -> Self {
Self {
id,
node_from,
node_to,
port_from,
port_to,
active,
selected: Cell::new(selected),
active: Cell::new(true),
selected: Cell::new(false),
thickness: 4,
name: RefCell::new("".to_string()),
}
}
}

8
src/graphmanager/mod.rs
View file

@ -104,11 +104,15 @@ mod test {
// Ports have been created by create_node_with_port
//Create link between node1 and node 2
let link = graphview.create_link(1, 2, 1, 2, true);
let link = graphview.create_link(1, 2, 1, 2);
assert_eq!(&link.name(), "");
assert!(&link.active());
link.set_name("link1");
assert_eq!(&link.name(), "link1");
graphview.add_link(link);
//Create link between node2 and node 3
let link = graphview.create_link(2, 3, 3, 4, true);
let link = graphview.create_link(2, 3, 3, 4);
graphview.add_link(link);
// Save the graphview in XML into a buffer