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[demo] Persist which demo windows are open

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This commit is contained in:
Emil Ernerfeldt 2021-01-10 20:57:33 +01:00
parent 26d576f510
commit d0c3bd0d8f
1 changed files with 19 additions and 13 deletions
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32
egui_demo_lib/src/apps/demo/demo_windows.rs
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@ -5,33 +5,39 @@ use egui::{CtxRef, Resize, ScrollArea, Ui, Window};
#[cfg_attr(feature = "persistence", derive(serde::Deserialize, serde::Serialize))] #[cfg_attr(feature = "persistence", derive(serde::Deserialize, serde::Serialize))]
#[cfg_attr(feature = "persistence", serde(default))] #[cfg_attr(feature = "persistence", serde(default))]
struct Demos { struct Demos {
/// open, view open: Vec<bool>,
#[cfg_attr(feature = "persistence", serde(skip))] // TODO: serialize the `open` state.
demos: Vec<(bool, Box<dyn super::Demo>)>, #[cfg_attr(feature = "persistence", serde(skip))]
demos: Vec<Box<dyn super::Demo>>,
} }
impl Default for Demos { impl Default for Demos {
fn default() -> Self { fn default() -> Self {
let demos: Vec<Box<dyn super::Demo>> = vec![
Box::new(super::FontBook::default()),
Box::new(super::Painting::default()),
Box::new(super::DancingStrings::default()),
Box::new(super::DragAndDropDemo::default()),
Box::new(super::Tests::default()),
Box::new(super::WindowOptions::default()),
];
Self { Self {
demos: vec![ open: vec![false; demos.len()],
(false, Box::new(super::FontBook::default())), demos,
(false, Box::new(super::Painting::default())),
(false, Box::new(super::DancingStrings::default())),
(false, Box::new(super::DragAndDropDemo::default())),
(false, Box::new(super::Tests::default())),
(false, Box::new(super::WindowOptions::default())),
],
} }
} }
} }
impl Demos { impl Demos {
pub fn checkboxes(&mut self, ui: &mut Ui) { pub fn checkboxes(&mut self, ui: &mut Ui) {
for (ref mut open, demo) in &mut self.demos { let Self { open, demos } = self;
for (ref mut open, demo) in open.iter_mut().zip(demos.iter()) {
ui.checkbox(open, demo.name()); ui.checkbox(open, demo.name());
} }
} }
pub fn show(&mut self, ctx: &CtxRef) { pub fn show(&mut self, ctx: &CtxRef) {
for (ref mut open, demo) in &mut self.demos { let Self { open, demos } = self;
open.resize(demos.len(), false); // Handle deserialization of old data.
for (ref mut open, demo) in open.iter_mut().zip(demos.iter_mut()) {
demo.show(ctx, open); demo.show(ctx, open);
} }
} }