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GPSApp: Able to clear the graph with new

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Able to clear with new file and load
a preconfigured graph with clear button
This commit is contained in:
Stéphane Cerveau 2021-12-14 16:29:05 +01:00
parent a0bb503b27
commit a15c9c7353
2 changed files with 24 additions and 15 deletions
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10
graphs/video.xml Normal file
View file

@ -0,0 +1,10 @@
<?xml version="1.0" encoding="utf-8"?>
<Graph>
<Node name="videotestsrc" id="1" type="Source">
<Port name="out" id="1" direction="Output" />
</Node>
<Node name="autovideosink" id="2" type="Sink">
<Port name="in" id="2" direction="Input" />
</Node>
<Link id="1" node_from="1" node_to="2" port_from="1" port_to="2" active="true" />
</Graph>

29
src/app.rs
View file

@ -256,7 +256,13 @@ impl GPSApp {
application.set_accels_for_action("app.quit", &["<primary>q"]);
let action = gio::SimpleAction::new("new-window", None);
let app_weak = self.downgrade();
action.connect_activate({
move |_, _| {
let app = upgrade_weak!(app_weak);
app.clear_graph();
}
});
application.add_action(&action);
application.set_accels_for_action("app.new-window", &["<primary>n"]);
@ -339,19 +345,7 @@ impl GPSApp {
let app_weak = self.downgrade();
add_button.connect_clicked(glib::clone!(@weak window => move |_| {
let app = upgrade_weak!(app_weak);
let graph_view = app.graphview.borrow_mut();
graph_view.remove_all_nodes();
let node_id = graph_view.next_node_id();
graph_view.add_node_with_port(
node_id,
Node::new(
node_id,
"filesrc",
Pipeline::element_type("videotestsrc"),
),
0,
1,
);
app.load_graph("graphs/video.xml").expect("Unable to open file");
}));
let app_weak = self.downgrade();
@ -510,6 +504,11 @@ impl GPSApp {
node.update_node_properties(properties);
}
pub fn clear_graph(&self) {
let graph_view = self.graphview.borrow_mut();
graph_view.remove_all_nodes();
}
pub fn save_graph(&self, filename: &str) -> anyhow::Result<(), Box<dyn error::Error>> {
let graph_view = self.graphview.borrow_mut();
graph_view.render_xml(filename)?;
@ -517,8 +516,8 @@ impl GPSApp {
}
pub fn load_graph(&self, filename: &str) -> anyhow::Result<(), Box<dyn error::Error>> {
self.clear_graph();
let graph_view = self.graphview.borrow_mut();
graph_view.remove_all_nodes();
graph_view.load_xml(filename)?;
Ok(())
}