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use eframe::egui;
use egui_commonmark::{CommonMarkCache, CommonMarkViewer};
#[derive(Clone, Copy)]
pub struct HelpWindowOptions {
pub min_size: egui::Vec2,
pub max_size_factor: f32,
pub default_width_factor: f32,
pub default_height_factor: f32,
}
impl Default for HelpWindowOptions {
fn default() -> Self {
Self {
min_size: egui::vec2(320.0, 240.0),
max_size_factor: 0.9,
default_width_factor: 0.5,
default_height_factor: 0.6,
}
}
}
pub fn show_help_window(
ctx: &egui::Context,
cache: &mut CommonMarkCache,
id_source: impl std::hash::Hash,
title: &str,
markdown_content: &str,
is_open: &mut bool,
options: HelpWindowOptions,
) {
if !*is_open {
return;
}
let viewport = ctx.available_rect();
let max_size = egui::vec2(
viewport.width() * options.max_size_factor,
viewport.height() * options.max_size_factor,
);
let default_size = egui::vec2(
(viewport.width() * options.default_width_factor)
.clamp(options.min_size.x, max_size.x.max(options.min_size.x)),
(viewport.height() * options.default_height_factor)
.clamp(options.min_size.y, max_size.y.max(options.min_size.y)),
);
let mut open = *is_open;
egui::Window::new(title)
.id(egui::Id::new(id_source))
.collapsible(false)
.resizable(true)
.default_size(default_size)
.min_size(options.min_size)
.max_size(max_size)
.open(&mut open)
.show(ctx, |ui| {
egui::ScrollArea::vertical()
.auto_shrink([false, false])
.show(ui, |ui| {
CommonMarkViewer::new().show(ui, cache, markdown_content);
});
});
*is_open = open;
}
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