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[collapsing header] add id_source to builder

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This commit is contained in:
Emil Ernerfeldt 2020-06-12 13:49:35 +02:00
parent 916e667aa2
commit 5c2a0a59ac
1 changed files with 14 additions and 1 deletions
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15
egui/src/containers/collapsing_header.rs
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@ -1,3 +1,5 @@
use std::hash::Hash;
use crate::{
layout::Direction,
paint::{LineStyle, PaintCmd, Path, TextStyle},
@ -142,6 +144,7 @@ impl State {
pub struct CollapsingHeader {
label: Label,
default_open: bool,
id_source: Option<Id>,
}
impl CollapsingHeader {
@ -151,6 +154,7 @@ impl CollapsingHeader {
.text_style(TextStyle::Button)
.multiline(false),
default_open: false,
id_source : None,
}
}
@ -158,6 +162,13 @@ impl CollapsingHeader {
self.default_open = open;
self
}
/// Explicitly set the source of the `Id` of this widget, instead of using title label.
/// This is useful if the title label is dynamics.
pub fn id_source(mut self, id_source: impl Hash) -> Self {
self.id_source = Some(Id::new(id_source));
self
}
}
struct Prepared {
@ -174,12 +185,14 @@ impl CollapsingHeader {
let Self {
label,
default_open,
id_source,
} = self;
// TODO: horizontal layout, with icon and text as labels. Insert background behind using Frame.
let title = label.text();
let id = ui.make_unique_child_id(title);
let id_source = id_source.unwrap_or_else(|| Id::new(title));
let id = ui.make_unique_child_id(id_source);
let available = ui.available_finite();
let text_pos = available.min + vec2(ui.style().indent, 0.0);