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// Copyright 2019 The Druid Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! A simple test of overlapping widgets.
// On Windows platform, don't show a console when opening the app.
#![windows_subsystem = "windows"]
use druid::widget::prelude::*;
use druid::widget::{Button, Label, ZStack};
use druid::{AppLauncher, Data, Lens, UnitPoint, Vec2, WindowDesc};
#[derive(Clone, Data, Lens)]
struct State {
counter: usize,
}
pub fn main() {
// describe the main window
let main_window = WindowDesc::new(build_root_widget())
.title("Hello World!")
.window_size((400.0, 400.0));
// create the initial app state
let initial_state: State = State { counter: 0 };
// start the application. Here we pass in the application state.
AppLauncher::with_window(main_window)
.log_to_console()
.launch(initial_state)
.expect("Failed to launch application");
}
fn build_root_widget() -> impl Widget<State> {
ZStack::new(
Button::from_label(Label::dynamic(|state: &State, _| {
format!(
"Very large button with text! Count up (currently {})",
state.counter
)
}))
.on_click(|_, state: &mut State, _| state.counter += 1),
)
.with_child(
Button::new("Reset").on_click(|_, state: &mut State, _| state.counter = 0),
Vec2::new(1.0, 1.0),
Vec2::ZERO,
UnitPoint::LEFT,
Vec2::new(10.0, 0.0),
)
}