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use crate::{
input::{keyboard, mouse, ButtonState},
layout, Element, Event, Hasher, Layout, Length, Point, Rectangle, Size,
Widget,
};
pub use iced_core::{text_input::State, TextInput};
impl<'a, Message, Renderer> Widget<Message, Renderer> for TextInput<'a, Message>
where
Renderer: self::Renderer,
Message: Clone + std::fmt::Debug,
{
fn width(&self) -> Length {
self.width
}
fn layout(
&self,
renderer: &Renderer,
limits: &layout::Limits,
) -> layout::Node {
let padding = self.padding as f32;
let text_size = self.size.unwrap_or(renderer.default_size());
let limits = limits
.pad(padding)
.width(self.width)
.height(Length::Units(text_size));
let mut text = layout::Node::new(limits.resolve(Size::ZERO));
text.bounds.x = padding;
text.bounds.y = padding;
layout::Node::with_children(text.size().pad(padding), vec![text])
}
fn on_event(
&mut self,
event: Event,
layout: Layout<'_>,
cursor_position: Point,
messages: &mut Vec<Message>,
_renderer: &Renderer,
) {
match event {
Event::Mouse(mouse::Event::Input {
button: mouse::Button::Left,
state: ButtonState::Pressed,
}) => {
self.state.is_focused =
layout.bounds().contains(cursor_position);
if self.state.cursor_position(&self.value) == 0 {
self.state.move_cursor_to_end(&self.value);
}
}
Event::Keyboard(keyboard::Event::CharacterReceived(c))
if self.state.is_focused && !c.is_control() =>
{
let cursor_position = self.state.cursor_position(&self.value);
self.value.insert(cursor_position, c);
self.state.move_cursor_right(&self.value);
let message = (self.on_change)(self.value.to_string());
messages.push(message);
}
Event::Keyboard(keyboard::Event::Input {
key_code,
state: ButtonState::Pressed,
}) if self.state.is_focused => match key_code {
keyboard::KeyCode::Enter => {
if let Some(on_submit) = self.on_submit.clone() {
messages.push(on_submit);
}
}
keyboard::KeyCode::Backspace => {
let cursor_position =
self.state.cursor_position(&self.value);
if cursor_position > 0 {
self.state.move_cursor_left(&self.value);
let _ = self.value.remove(cursor_position - 1);
let message = (self.on_change)(self.value.to_string());
messages.push(message);
}
}
keyboard::KeyCode::Delete => {
let cursor_position =
self.state.cursor_position(&self.value);
if cursor_position < self.value.len() {
let _ = self.value.remove(cursor_position);
let message = (self.on_change)(self.value.to_string());
messages.push(message);
}
}
keyboard::KeyCode::Left => {
self.state.move_cursor_left(&self.value);
}
keyboard::KeyCode::Right => {
self.state.move_cursor_right(&self.value);
}
_ => {}
},
_ => {}
}
}
fn draw(
&self,
renderer: &mut Renderer,
layout: Layout<'_>,
cursor_position: Point,
) -> Renderer::Output {
let bounds = layout.bounds();
let text_bounds = layout.children().next().unwrap().bounds();
renderer.draw(&self, bounds, text_bounds, cursor_position)
}
fn hash_layout(&self, state: &mut Hasher) {
use std::any::TypeId;
use std::hash::Hash;
TypeId::of::<TextInput<'static, ()>>().hash(state);
self.width.hash(state);
self.max_width.hash(state);
self.padding.hash(state);
self.size.hash(state);
}
}
pub trait Renderer: crate::Renderer + Sized {
fn default_size(&self) -> u16;
fn draw<Message>(
&mut self,
text_input: &TextInput<'_, Message>,
bounds: Rectangle,
text_bounds: Rectangle,
cursor_position: Point,
) -> Self::Output;
}
impl<'a, Message, Renderer> From<TextInput<'a, Message>>
for Element<'a, Message, Renderer>
where
Renderer: 'static + self::Renderer,
Message: 'static + Clone + std::fmt::Debug,
{
fn from(
text_input: TextInput<'a, Message>,
) -> Element<'a, Message, Renderer> {
Element::new(text_input)
}
}
|
