maolan 0.2.3

Rust DAW application for recording, editing, routing, automation, export, and plugin hosting
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use iced::{
    Element, Event, Length, Rectangle, Renderer, Size, Theme, Vector,
    advanced::{
        Clipboard, Layout, Shell, Widget, layout, mouse, overlay, renderer,
        widget::{Operation, Tree},
    },
};

pub struct CursorOverride<'a, Message> {
    content: Element<'a, Message>,
    interaction: Option<mouse::Interaction>,
}

impl<'a, Message> CursorOverride<'a, Message> {
    pub fn new(
        content: impl Into<Element<'a, Message>>,
        interaction: Option<mouse::Interaction>,
    ) -> Self {
        Self {
            content: content.into(),
            interaction,
        }
    }
}

impl<Message> Widget<Message, Theme, Renderer> for CursorOverride<'_, Message> {
    fn tag(&self) -> iced::advanced::widget::tree::Tag {
        self.content.as_widget().tag()
    }

    fn state(&self) -> iced::advanced::widget::tree::State {
        self.content.as_widget().state()
    }

    fn children(&self) -> Vec<Tree> {
        self.content.as_widget().children()
    }

    fn diff(&self, tree: &mut Tree) {
        self.content.as_widget().diff(tree);
    }

    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(tree, renderer, limits)
    }

    fn operate(
        &mut self,
        tree: &mut Tree,
        layout: Layout<'_>,
        renderer: &Renderer,
        operation: &mut dyn Operation,
    ) {
        self.content
            .as_widget_mut()
            .operate(tree, 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(
            tree, event, layout, cursor, renderer, clipboard, shell, viewport,
        );
    }

    fn mouse_interaction(
        &self,
        tree: &Tree,
        layout: Layout<'_>,
        cursor: mouse::Cursor,
        viewport: &Rectangle,
        renderer: &Renderer,
    ) -> mouse::Interaction {
        if let Some(interaction) = self.interaction {
            return interaction;
        }

        self.content
            .as_widget()
            .mouse_interaction(tree, layout, cursor, viewport, renderer)
    }

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

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

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