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view: Draw a dashed line for links that are not active

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This commit is contained in:
Tom A. Wagner
2021-07-08 13:37:37 +02:00
parent be9339472e
commit 179665778d
4 changed files with 64 additions and 12 deletions
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26
src/view/graph_view.rs
View File

@@ -20,7 +20,8 @@ mod imp {
#[derive(Default)]
pub struct GraphView {
pub(super) nodes: RefCell<HashMap<u32, Node>>,
pub(super) links: RefCell<HashMap<u32, crate::PipewireLink>>,
/// Stores the link and whether it is currently active.
pub(super) links: RefCell<HashMap<u32, (crate::PipewireLink, bool)>>,
}
#[glib::object_subclass]
@@ -150,10 +151,17 @@ mod imp {
.expect("Failed to get cairo context");
link_cr.set_line_width(2.0);
link_cr.set_source_rgb(0.0, 0.0, 0.0);
for link in self.links.borrow().values() {
for (link, active) in self.links.borrow().values() {
if let Some((from_x, from_y, to_x, to_y)) = self.get_link_coordinates(link) {
link_cr.move_to(from_x, from_y);
// Use dashed line for inactive links, full line otherwise.
if *active {
link_cr.set_dash(&[], 0.0);
} else {
link_cr.set_dash(&[10.0, 5.0], 0.0);
}
// Place curve control offset by half the x distance between the two points.
// This makes the curve scale well for varying distances between the two ports,
// especially when the output port is farther right than the input port.
@@ -276,12 +284,22 @@ impl GraphView {
}
}
pub fn add_link(&self, link_id: u32, link: crate::PipewireLink) {
pub fn add_link(&self, link_id: u32, link: crate::PipewireLink, active: bool) {
let private = imp::GraphView::from_instance(self);
private.links.borrow_mut().insert(link_id, link);
private.links.borrow_mut().insert(link_id, (link, active));
self.queue_draw();
}
pub fn set_link_state(&self, link_id: u32, active: bool) {
let private = imp::GraphView::from_instance(self);
if let Some((_, state)) = private.links.borrow_mut().get_mut(&link_id) {
*state = active;
self.queue_draw();
} else {
warn!("Link state changed on unknown link (id={})", link_id);
}
}
pub fn remove_link(&self, id: u32) {
let private = imp::GraphView::from_instance(self);
let mut links = private.links.borrow_mut();