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Allow cursors to be linked for plots (#1722)

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* Allow cursors to be linked

* Link cursors in demo

* Refactor cursor memory to deal with removal of plots

* Refactor PlotItem::on_hover to produce a list of cursors

* Use a separate `LinkedCursorsGroup` type to link cursors.

* Refactor `Cursor`.

* Inline `push_argument_ruler` and `push_value_ruler`.

* Update documentation

* Update doc reference
This commit is contained in:
Zoxc
2022-08-28 09:36:08 +02:00
committed by GitHub
parent b978b06159
commit 9be060fe69
5 changed files with 242 additions and 46 deletions
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18
crates/egui_demo_lib/src/demo/plot_demo.rs
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@@ -459,16 +459,24 @@ struct LinkedAxisDemo {
link_x: bool,
link_y: bool,
group: plot::LinkedAxisGroup,
cursor_group: plot::LinkedCursorsGroup,
link_cursor_x: bool,
link_cursor_y: bool,
}
impl Default for LinkedAxisDemo {
fn default() -> Self {
let link_x = true;
let link_y = false;
let link_cursor_x = true;
let link_cursor_y = false;
Self {
link_x,
link_y,
group: plot::LinkedAxisGroup::new(link_x, link_y),
cursor_group: plot::LinkedCursorsGroup::new(link_cursor_x, link_cursor_y),
link_cursor_x,
link_cursor_y,
}
}
}
@@ -514,18 +522,27 @@ impl LinkedAxisDemo {
});
self.group.set_link_x(self.link_x);
self.group.set_link_y(self.link_y);
ui.horizontal(|ui| {
ui.label("Linked cursors:");
ui.checkbox(&mut self.link_cursor_x, "X");
ui.checkbox(&mut self.link_cursor_y, "Y");
});
self.cursor_group.set_link_x(self.link_cursor_x);
self.cursor_group.set_link_y(self.link_cursor_y);
ui.horizontal(|ui| {
Plot::new("linked_axis_1")
.data_aspect(1.0)
.width(250.0)
.height(250.0)
.link_axis(self.group.clone())
.link_cursor(self.cursor_group.clone())
.show(ui, LinkedAxisDemo::configure_plot);
Plot::new("linked_axis_2")
.data_aspect(2.0)
.width(150.0)
.height(250.0)
.link_axis(self.group.clone())
.link_cursor(self.cursor_group.clone())
.show(ui, LinkedAxisDemo::configure_plot);
});
Plot::new("linked_axis_3")
@@ -533,6 +550,7 @@ impl LinkedAxisDemo {
.width(250.0)
.height(150.0)
.link_axis(self.group.clone())
.link_cursor(self.cursor_group.clone())
.show(ui, LinkedAxisDemo::configure_plot)
.response
}