xilem/masonry/examples/hello_masonry.rs

57 lines
1.7 KiB
Rust

// Copyright 2019 the Xilem Authors and the Druid Authors
// SPDX-License-Identifier: Apache-2.0
//! This is a very small example of how to setup a masonry application.
//! It does the almost bare minimum while still being useful.
// On Windows platform, don't show a console when opening the app.
#![windows_subsystem = "windows"]
use masonry::app_driver::{AppDriver, DriverCtx};
use masonry::dpi::LogicalSize;
use masonry::widget::{Button, Flex, Label, RootWidget};
use masonry::{Action, WidgetId};
use winit::window::Window;
const VERTICAL_WIDGET_SPACING: f64 = 20.0;
struct Driver;
impl AppDriver for Driver {
fn on_action(&mut self, _ctx: &mut DriverCtx<'_>, _widget_id: WidgetId, action: Action) {
match action {
Action::ButtonPressed(_) => {
println!("Hello");
}
action => {
eprintln!("Unexpected action {action:?}");
}
}
}
}
pub fn main() {
let label = Label::new("Hello").with_text_size(32.0);
let button = Button::new("Say hello");
// Arrange the two widgets vertically, with some padding
let main_widget = Flex::column()
.with_child(label)
.with_spacer(VERTICAL_WIDGET_SPACING)
.with_child(button);
let window_size = LogicalSize::new(400.0, 400.0);
let window_attributes = Window::default_attributes()
.with_title("Hello World!")
.with_resizable(true)
.with_min_inner_size(window_size);
masonry::event_loop_runner::run(
masonry::event_loop_runner::EventLoop::with_user_event(),
window_attributes,
RootWidget::new(main_widget),
Driver,
)
.unwrap();
}