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Refractor graphview.rs by moving accessor functions into wrapper type.

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This commit is contained in:
Tom A. Wagner
2021-01-08 09:56:36 +01:00
parent 0e5b9bb1bc
commit 323e1a2a8f
1 changed files with 46 additions and 65 deletions
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111
src/view/graph_view.rs
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@@ -1,20 +1,20 @@
use super::Node;
use gtk::{glib, prelude::*, subclass::prelude::*, WidgetExt};
use gtk::{glib, graphene, gsk, prelude::*, subclass::prelude::*, WidgetExt};
use std::collections::HashMap;
mod imp {
use super::*;
use gtk::{gdk, graphene, gsk, WidgetExt};
use gtk::{gdk, WidgetExt};
use std::{cell::RefCell, rc::Rc};
pub struct GraphView {
nodes: RefCell<HashMap<u32, Node>>,
links: RefCell<HashMap<u32, crate::PipewireLink>>,
dragged: Rc<RefCell<Option<gtk::Widget>>>,
pub(super) nodes: RefCell<HashMap<u32, Node>>,
pub(super) links: RefCell<HashMap<u32, crate::PipewireLink>>,
pub(super) dragged: Rc<RefCell<Option<gtk::Widget>>>,
}
impl ObjectSubclass for GraphView {
@@ -136,61 +136,6 @@ mod imp {
}
impl GraphView {
pub fn add_node(&self, id: u32, node: Node) {
// Place widgets in colums of 4, growing down, then right.
// TODO: Make a better positioning algorithm.
let x = (self.nodes.borrow().len() / 4) as f32 * 400.0;
let y = self.nodes.borrow().len() as f32 % 4.0 * 100.0;
self.move_node(&node.clone().upcast(), x, y);
self.nodes.borrow_mut().insert(id, node);
}
pub fn move_node(&self, node: &gtk::Widget, x: f32, y: f32) {
let layout_manager = self
.get_instance()
.get_layout_manager()
.expect("Failed to get layout manager")
.dynamic_cast::<gtk::FixedLayout>()
.expect("Failed to cast to FixedLayout");
let transform = gsk::Transform::new()
.translate(&graphene::Point::new(x, y))
.unwrap();
layout_manager
.get_layout_child(node)
.expect("Could not get layout child")
.dynamic_cast::<gtk::FixedLayoutChild>()
.expect("Could not cast to FixedLayoutChild")
.set_transform(&transform);
}
pub fn add_port_to_node(&self, node_id: u32, port_id: u32, port: crate::view::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,
/// `from` and `to` are the id's of the ingoing and outgoing port, respectively.
pub fn add_link(&self, link_id: u32, link: crate::PipewireLink) {
self.links.borrow_mut().insert(link_id, link);
}
pub fn set_dragged(&self, widget: Option<gtk::Widget>) {
*self.dragged.borrow_mut() = widget;
}
/// Get coordinates for the drawn link to start at and to end at.
///
/// # Returns
@@ -245,12 +190,31 @@ impl GraphView {
}
pub fn add_node(&self, id: u32, node: Node) {
let private = imp::GraphView::from_instance(self);
node.set_parent(self);
imp::GraphView::from_instance(self).add_node(id, node)
// Place widgets in colums of 4, growing down, then right.
// TODO: Make a better positioning algorithm.
let x = (private.nodes.borrow().len() / 4) as f32 * 400.0; // This relies on integer division rounding down.
let y = private.nodes.borrow().len() as f32 % 4.0 * 100.0;
self.move_node(&node.clone().upcast(), x, y);
private.nodes.borrow_mut().insert(id, node);
}
pub fn add_port_to_node(&self, node_id: u32, port_id: u32, port: crate::view::port::Port) {
imp::GraphView::from_instance(self).add_port_to_node(node_id, port_id, port)
let private = imp::GraphView::from_instance(self);
if let Some(node) = private.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.
@@ -258,16 +222,33 @@ impl GraphView {
/// `add_link` takes three arguments: `link_id` is the id of the link as assigned by the pipewire server,
/// `from` and `to` are the id's of the ingoing and outgoing port, respectively.
pub fn add_link(&self, link_id: u32, link: crate::PipewireLink) {
imp::GraphView::from_instance(self).add_link(link_id, link);
let private = imp::GraphView::from_instance(self);
private.links.borrow_mut().insert(link_id, link);
self.queue_draw();
}
pub fn set_dragged(&self, widget: Option<gtk::Widget>) {
imp::GraphView::from_instance(self).set_dragged(widget)
*imp::GraphView::from_instance(self).dragged.borrow_mut() = widget;
}
pub fn move_node(&self, node: &gtk::Widget, x: f32, y: f32) {
imp::GraphView::from_instance(self).move_node(node, x, y);
let layout_manager = self
.get_layout_manager()
.expect("Failed to get layout manager")
.dynamic_cast::<gtk::FixedLayout>()
.expect("Failed to cast to FixedLayout");
let transform = gsk::Transform::new()
.translate(&graphene::Point::new(x, y))
.unwrap();
layout_manager
.get_layout_child(node)
.expect("Could not get layout child")
.dynamic_cast::<gtk::FixedLayoutChild>()
.expect("Could not cast to FixedLayoutChild")
.set_transform(&transform);
// FIXME: If links become proper widgets,
// we don't need to redraw the full graph everytime.
self.queue_draw();