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|
mod combo_box {
use iced_native::{
layout, mouse, Background, Color, Element, Hasher, Layer, Layout,
Length, Overlay, Point, Size, Vector, Widget,
};
use iced_wgpu::{Defaults, Primitive, Renderer};
pub struct ComboBox;
impl ComboBox {
pub fn new() -> Self {
Self
}
}
impl<'a, Message> Widget<'a, Message, Renderer> for ComboBox {
fn width(&self) -> Length {
Length::Shrink
}
fn height(&self) -> Length {
Length::Shrink
}
fn layout(
&self,
_renderer: &Renderer,
_limits: &layout::Limits,
) -> layout::Node {
layout::Node::new(Size::new(50.0, 50.0))
}
fn hash_layout(&self, _state: &mut Hasher) {}
fn draw(
&self,
_renderer: &mut Renderer,
_defaults: &Defaults,
layout: Layout<'_>,
_cursor_position: Point,
) -> (Primitive, mouse::Interaction) {
let primitive = Primitive::Quad {
bounds: layout.bounds(),
background: Background::Color(Color::BLACK),
border_width: 0,
border_radius: 0,
border_color: Color::TRANSPARENT,
};
(primitive, mouse::Interaction::default())
}
fn overlay(
&mut self,
layout: Layout<'_>,
) -> Option<Overlay<'a, Message, Renderer>> {
Some(Overlay::new(layout.position(), Box::new(Menu)))
}
}
impl<'a, Message> Into<Element<'a, Message, Renderer>> for ComboBox {
fn into(self) -> Element<'a, Message, Renderer> {
Element::new(self)
}
}
pub struct Menu;
impl<Message> Layer<Message, Renderer> for Menu {
fn layout(
&self,
_renderer: &Renderer,
_bounds: Size,
position: Point,
) -> layout::Node {
let mut node = layout::Node::new(Size::new(100.0, 100.0));
node.move_to(position + Vector::new(25.0, 25.0));
node
}
fn hash_layout(&self, state: &mut Hasher, position: Point) {
use std::hash::Hash;
(position.x as u32).hash(state);
(position.y as u32).hash(state);
}
fn draw(
&self,
_renderer: &mut Renderer,
_defaults: &Defaults,
layout: Layout<'_>,
_cursor_position: Point,
) -> (Primitive, mouse::Interaction) {
let primitive = Primitive::Quad {
bounds: layout.bounds(),
background: Background::Color(Color {
r: 0.0,
g: 0.0,
b: 1.0,
a: 0.5,
}),
border_width: 0,
border_radius: 0,
border_color: Color::TRANSPARENT,
};
(primitive, mouse::Interaction::default())
}
}
}
pub use combo_box::ComboBox;
use iced::{
button, Button, Column, Container, Element, Length, Sandbox, Settings, Text,
};
pub fn main() {
Example::run(Settings::default())
}
#[derive(Default)]
struct Example {
button: button::State,
}
#[derive(Debug, Clone, Copy)]
enum Message {
ButtonPressed,
}
impl Sandbox for Example {
type Message = Message;
fn new() -> Self {
Self::default()
}
fn title(&self) -> String {
String::from("Combo box - Iced")
}
fn update(&mut self, _message: Message) {}
fn view(&mut self) -> Element<Message> {
let combo_box = ComboBox::new();
let button = Button::new(&mut self.button, Text::new("Press me!"))
.on_press(Message::ButtonPressed);
let content = Column::new().spacing(10).push(combo_box).push(button);
Container::new(content)
.width(Length::Fill)
.height(Length::Fill)
.center_x()
.center_y()
.into()
}
}
|
