117 lines
3.6 KiB
Rust
117 lines
3.6 KiB
Rust
//! Show a custom window frame instead of the default OS window chrome decorations.
|
|
|
|
#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
|
|
|
|
use eframe::egui;
|
|
|
|
fn main() {
|
|
let options = eframe::NativeOptions {
|
|
// Hide the OS-specific "chrome" around the window:
|
|
decorated: false,
|
|
// To have rounded corners we need transparency:
|
|
transparent: true,
|
|
min_window_size: Some(egui::vec2(320.0, 100.0)),
|
|
..Default::default()
|
|
};
|
|
eframe::run_native(
|
|
"Custom window frame", // unused title
|
|
options,
|
|
Box::new(|_cc| Box::new(MyApp::default())),
|
|
);
|
|
}
|
|
|
|
#[derive(Default)]
|
|
struct MyApp {}
|
|
|
|
impl eframe::App for MyApp {
|
|
fn clear_color(&self, _visuals: &egui::Visuals) -> egui::Rgba {
|
|
egui::Rgba::TRANSPARENT // Make sure we don't paint anything behind the rounded corners
|
|
}
|
|
|
|
fn update(&mut self, ctx: &egui::Context, frame: &mut eframe::Frame) {
|
|
custon_window_frame(ctx, frame, "egui with custom frame", |ui| {
|
|
ui.label("This is just the contents of the window");
|
|
ui.horizontal(|ui| {
|
|
ui.label("egui theme:");
|
|
egui::widgets::global_dark_light_mode_buttons(ui);
|
|
});
|
|
});
|
|
}
|
|
}
|
|
|
|
fn custon_window_frame(
|
|
ctx: &egui::Context,
|
|
frame: &mut eframe::Frame,
|
|
title: &str,
|
|
add_contents: impl FnOnce(&mut egui::Ui),
|
|
) {
|
|
use egui::*;
|
|
let text_color = ctx.style().visuals.text_color();
|
|
|
|
// Height of the title bar
|
|
let height = 28.0;
|
|
|
|
CentralPanel::default()
|
|
.frame(Frame::none())
|
|
.show(ctx, |ui| {
|
|
let rect = ui.max_rect();
|
|
let painter = ui.painter();
|
|
|
|
// Paint the frame:
|
|
painter.rect(
|
|
rect.shrink(1.0),
|
|
10.0,
|
|
ctx.style().visuals.window_fill(),
|
|
Stroke::new(1.0, text_color),
|
|
);
|
|
|
|
// Paint the title:
|
|
painter.text(
|
|
rect.center_top() + vec2(0.0, height / 2.0),
|
|
Align2::CENTER_CENTER,
|
|
title,
|
|
FontId::proportional(height - 2.0),
|
|
text_color,
|
|
);
|
|
|
|
// Paint the line under the title:
|
|
painter.line_segment(
|
|
[
|
|
rect.left_top() + vec2(2.0, height),
|
|
rect.right_top() + vec2(-2.0, height),
|
|
],
|
|
Stroke::new(1.0, text_color),
|
|
);
|
|
|
|
// Add the close button:
|
|
let close_response = ui.put(
|
|
Rect::from_min_size(rect.left_top(), Vec2::splat(height)),
|
|
Button::new(RichText::new("❌").size(height - 4.0)).frame(false),
|
|
);
|
|
if close_response.clicked() {
|
|
frame.quit();
|
|
}
|
|
|
|
// Interact with the title bar (drag to move window):
|
|
let title_bar_rect = {
|
|
let mut rect = rect;
|
|
rect.max.y = rect.min.y + height;
|
|
rect
|
|
};
|
|
let title_bar_response =
|
|
ui.interact(title_bar_rect, Id::new("title_bar"), Sense::click());
|
|
if title_bar_response.is_pointer_button_down_on() {
|
|
frame.drag_window();
|
|
}
|
|
|
|
// Add the contents:
|
|
let content_rect = {
|
|
let mut rect = rect;
|
|
rect.min.y = title_bar_rect.max.y;
|
|
rect
|
|
}
|
|
.shrink(4.0);
|
|
let mut content_ui = ui.child_ui(content_rect, *ui.layout());
|
|
add_contents(&mut content_ui);
|
|
});
|
|
}
|