8d86ae1715
Using the latest unpublished Egui. Will update to 0.6 once released.
177 lines
5.8 KiB
Rust
177 lines
5.8 KiB
Rust
/// We derive Deserialize/Serialize so we can persist app state on shutdown.
|
|
#[derive(serde::Deserialize, serde::Serialize)]
|
|
pub struct EguiApp {
|
|
// Example stuff:
|
|
label: String,
|
|
value: f32,
|
|
painting: Painting,
|
|
}
|
|
|
|
impl Default for EguiApp {
|
|
fn default() -> Self {
|
|
Self {
|
|
// Example stuff:
|
|
label: "Hello World!".to_owned(),
|
|
value: 2.7,
|
|
painting: Default::default(),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl egui::app::App for EguiApp {
|
|
fn name(&self) -> &str {
|
|
"Egui Template"
|
|
}
|
|
|
|
/// Called by the framework to load old app state (if any).
|
|
fn load(&mut self, storage: &dyn egui::app::Storage) {
|
|
*self = egui::app::get_value(storage, egui::app::APP_KEY).unwrap_or_default()
|
|
}
|
|
|
|
/// Called by the frame work to save state before shutdown.
|
|
fn save(&mut self, storage: &mut dyn egui::app::Storage) {
|
|
egui::app::set_value(storage, egui::app::APP_KEY, self);
|
|
}
|
|
|
|
/// Called each time the UI needs repainting, which may be many times per second.
|
|
/// Put your widgets into a `SidePanel`, `TopPanel`, `CentralPanel`, `Window` or `Area`.
|
|
fn ui(&mut self, ctx: &egui::CtxRef, integration_context: &mut egui::app::IntegrationContext) {
|
|
let EguiApp {
|
|
label,
|
|
value,
|
|
painting,
|
|
} = self;
|
|
|
|
// Examples of how to create differens panels and windows.
|
|
// Pick whichever suits you.
|
|
// Tip: a good default choice is to just keep the `CentralPanel`.
|
|
// For inspiration and more examples, go to https://emilk.github.io/egui
|
|
|
|
egui::SidePanel::left("side_panel", 200.0).show(ctx, |ui| {
|
|
ui.heading("Side Panel");
|
|
|
|
ui.horizontal(|ui| {
|
|
ui.label("Write something: ");
|
|
ui.text_edit_singleline(label);
|
|
});
|
|
|
|
ui.add(egui::Slider::f32(value, 0.0..=10.0).text("value"));
|
|
if ui.button("Increment").clicked {
|
|
*value += 1.0;
|
|
}
|
|
|
|
ui.with_layout(egui::Layout::bottom_up(egui::Align::Center), |ui| {
|
|
ui.add(
|
|
egui::Hyperlink::new("https://github.com/emilk/egui/").text("Powered by Egui"),
|
|
);
|
|
});
|
|
});
|
|
|
|
egui::TopPanel::top("top_panel").show(ctx, |ui| {
|
|
// The top panel is often a good place for a menu bar:
|
|
egui::menu::bar(ui, |ui| {
|
|
egui::menu::menu(ui, "File", |ui| {
|
|
if ui.button("Quit").clicked {
|
|
integration_context.output.quit = true;
|
|
}
|
|
});
|
|
});
|
|
});
|
|
|
|
egui::CentralPanel::default().show(ctx, |ui| {
|
|
ui.heading("Egui Template");
|
|
ui.hyperlink("https://github.com/emilk/egui_template");
|
|
ui.add(egui::github_link_file_line!(
|
|
"https://github.com/emilk/egui_template/blob/master/",
|
|
"Direct link to source code."
|
|
));
|
|
egui::demos::warn_if_debug_build(ui);
|
|
|
|
ui.separator();
|
|
|
|
ui.heading("Central Panel");
|
|
ui.label("The central panel the region left after adding TopPanel's and SidePanel's");
|
|
ui.label("It is often a great place for big things, like drawings:");
|
|
|
|
ui.heading("Draw with your mouse to paint:");
|
|
painting.ui_control(ui);
|
|
egui::Frame::dark_canvas(ui.style()).show(ui, |ui| {
|
|
painting.ui_content(ui);
|
|
});
|
|
});
|
|
|
|
if false {
|
|
egui::Window::new("Window").show(ctx, |ui| {
|
|
ui.label("Windows can be moved by dragging them.");
|
|
ui.label("They are automatically sized based on contents.");
|
|
ui.label("You can turn on resizing and scrolling if you like.");
|
|
ui.label("You would normally chose either panels OR windows.");
|
|
});
|
|
}
|
|
|
|
// Resize the glium window to be just the size we need it to be:
|
|
integration_context.output.window_size = Some(ctx.used_size());
|
|
}
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
/// Example code for painting on a canvas with your mouse
|
|
#[derive(Clone, serde::Deserialize, serde::Serialize)]
|
|
struct Painting {
|
|
lines: Vec<Vec<egui::Vec2>>,
|
|
stroke: egui::Stroke,
|
|
}
|
|
|
|
impl Default for Painting {
|
|
fn default() -> Self {
|
|
Self {
|
|
lines: Default::default(),
|
|
stroke: egui::Stroke::new(1.0, egui::color::LIGHT_BLUE),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Painting {
|
|
pub fn ui_control(&mut self, ui: &mut egui::Ui) {
|
|
ui.horizontal(|ui| {
|
|
self.stroke.ui(ui, "Stroke");
|
|
ui.separator();
|
|
if ui.button("Clear Painting").clicked {
|
|
self.lines.clear();
|
|
}
|
|
});
|
|
}
|
|
|
|
pub fn ui_content(&mut self, ui: &mut egui::Ui) {
|
|
let painter = ui.allocate_painter(ui.available_size_before_wrap_finite());
|
|
let rect = painter.clip_rect();
|
|
let id = ui.make_position_id();
|
|
let response = ui.interact(rect, id, egui::Sense::drag());
|
|
|
|
if self.lines.is_empty() {
|
|
self.lines.push(vec![]);
|
|
}
|
|
|
|
let current_line = self.lines.last_mut().unwrap();
|
|
|
|
if response.active {
|
|
if let Some(mouse_pos) = ui.input().mouse.pos {
|
|
let canvas_pos = mouse_pos - rect.min;
|
|
if current_line.last() != Some(&canvas_pos) {
|
|
current_line.push(canvas_pos);
|
|
}
|
|
}
|
|
} else if !current_line.is_empty() {
|
|
self.lines.push(vec![]);
|
|
}
|
|
|
|
for line in &self.lines {
|
|
if line.len() >= 2 {
|
|
let points: Vec<egui::Pos2> = line.iter().map(|p| rect.min + *p).collect();
|
|
painter.add(egui::PaintCmd::line(points, self.stroke));
|
|
}
|
|
}
|
|
}
|
|
}
|