modde-ui 0.2.1

GUI application for modde
Documentation 
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use iced::advanced::layout;
use iced::advanced::mouse;
use iced::advanced::overlay;
use iced::advanced::renderer;
use iced::advanced::widget::{self, Tree};
use iced::advanced::{Clipboard, Layout, Shell, Widget};
use iced::{Element, Event, Length, Rectangle, Size, Theme, Vector, keyboard};

use crate::app::{Message, shortcut_action_to_message};

type Renderer = iced::Renderer;

pub fn shortcut_layer(content: Element<'_, Message>) -> ShortcutLayer<'_> {
    ShortcutLayer { content }
}

pub struct ShortcutLayer<'a> {
    content: Element<'a, Message>,
}

impl Widget<Message, Theme, Renderer> for ShortcutLayer<'_> {
    fn tag(&self) -> widget::tree::Tag {
        widget::tree::Tag::stateless()
    }

    fn children(&self) -> Vec<Tree> {
        vec![Tree::new(&self.content)]
    }

    fn diff(&self, tree: &mut Tree) {
        tree.diff_children(std::slice::from_ref(&self.content));
    }

    fn size(&self) -> Size<Length> {
        self.content.as_widget().size()
    }

    fn layout(
        &mut self,
        tree: &mut Tree,
        renderer: &Renderer,
        limits: &layout::Limits,
    ) -> layout::Node {
        self.content
            .as_widget_mut()
            .layout(&mut tree.children[0], renderer, limits)
    }

    fn operate(
        &mut self,
        tree: &mut Tree,
        layout: Layout<'_>,
        renderer: &Renderer,
        operation: &mut dyn widget::Operation,
    ) {
        self.content
            .as_widget_mut()
            .operate(&mut tree.children[0], layout, renderer, operation);
    }

    fn update(
        &mut self,
        tree: &mut Tree,
        event: &Event,
        layout: Layout<'_>,
        cursor: mouse::Cursor,
        renderer: &Renderer,
        clipboard: &mut dyn Clipboard,
        shell: &mut Shell<'_, Message>,
        viewport: &Rectangle,
    ) {
        self.content.as_widget_mut().update(
            &mut tree.children[0],
            event,
            layout,
            cursor,
            renderer,
            clipboard,
            shell,
            viewport,
        );

        if shell.is_event_captured() {
            return;
        }

        if let Event::Keyboard(keyboard::Event::KeyPressed { key, modifiers, .. }) = event
            && let Some(action) = crate::shortcuts::match_shortcut(key, *modifiers)
            && let Some(message) = shortcut_action_to_message(action)
        {
            shell.publish(message);
            shell.capture_event();
        }
    }

    fn mouse_interaction(
        &self,
        tree: &Tree,
        layout: Layout<'_>,
        cursor: mouse::Cursor,
        viewport: &Rectangle,
        renderer: &Renderer,
    ) -> mouse::Interaction {
        self.content.as_widget().mouse_interaction(
            &tree.children[0],
            layout,
            cursor,
            viewport,
            renderer,
        )
    }

    fn draw(
        &self,
        tree: &Tree,
        renderer: &mut Renderer,
        theme: &Theme,
        defaults: &renderer::Style,
        layout: Layout<'_>,
        cursor: mouse::Cursor,
        viewport: &Rectangle,
    ) {
        self.content.as_widget().draw(
            &tree.children[0],
            renderer,
            theme,
            defaults,
            layout,
            cursor,
            viewport,
        );
    }

    fn overlay<'b>(
        &'b mut self,
        tree: &'b mut Tree,
        layout: Layout<'b>,
        renderer: &Renderer,
        viewport: &Rectangle,
        translation: Vector,
    ) -> Option<overlay::Element<'b, Message, Theme, Renderer>> {
        self.content.as_widget_mut().overlay(
            &mut tree.children[0],
            layout,
            renderer,
            viewport,
            translation,
        )
    }
}

impl<'a> From<ShortcutLayer<'a>> for Element<'a, Message> {
    fn from(layer: ShortcutLayer<'a>) -> Self {
        Element::new(layer)
    }
}