iris/examples/tabs/main.rs

use cosmic_text::Family;
use std::{cell::RefCell, rc::Rc};
use winit::event::WindowEvent;

use iris::prelude::*;
type ClientRsc = DefaultRsc<Client>;

fn main() {
    DefaultApp::<Client>::run();
}

#[derive(DefaultUiState)]
pub struct Client {
    ui_state: DefaultUiState,
    info: WeakWidget<Text>,
}

impl DefaultAppState for Client {
    fn new(
        mut ui_state: DefaultUiState,
        rsc: &mut DefaultRsc<Self>,
        _: Proxy<Self::Event>,
    ) -> Self {
        let rrect = rect(Color::WHITE).radius(20);
        let pad_test = (
            rrect.color(Color::BLUE),
            (
                rrect
                    .color(Color::RED)
                    .sized((100, 100))
                    .center()
                    .width(rest(2)),
                (
                    rrect.color(Color::ORANGE),
                    rrect.color(Color::LIME).pad(10.0),
                )
                    .span(Dir::RIGHT)
                    .width(rest(2)),
                rrect.color(Color::YELLOW),
            )
                .span(Dir::RIGHT)
                .pad(10)
                .width(rest(3)),
        )
            .span(Dir::RIGHT)
            .add(rsc);

        let span_test = (
            rrect.color(Color::GREEN).width(100),
            rrect.color(Color::ORANGE),
            rrect.color(Color::CYAN),
            rrect.color(Color::BLUE).width(rel(0.5)),
            rrect.color(Color::MAGENTA).width(100),
            rrect.color(Color::RED).width(100),
        )
            .span(Dir::LEFT)
            .add(rsc);

        let span_add = Span::empty(Dir::RIGHT).add(rsc);

        let add_button = rect(Color::LIME)
            .radius(30)
            .on(CursorSense::click(), move |_, rsc| {
                let child = image(include_bytes!("assets/sungals.png"))
                    .center()
                    .add_strong(rsc);
                span_add(rsc).push(child);
            })
            .sized((150, 150))
            .align(Align::BOT_RIGHT);

        let del_button = rect(Color::RED)
            .radius(30)
            .on(CursorSense::click(), move |_, rsc| {
                span_add(rsc).pop();
            })
            .sized((150, 150))
            .align(Align::BOT_LEFT);

        let span_add_test = (span_add, add_button, del_button).stack().add(rsc);

        let btext = |content| wtext(content).size(30);

        let text_test = (
            btext("this is a").align(Align::LEFT),
            btext("teeeeeeeest").align(Align::RIGHT),
            btext("okkk\nokkkkkk!").align(Align::LEFT),
            btext("hmm"),
            btext("a"),
            (
                btext("'").family(Family::Monospace).align(Align::TOP),
                btext("'").family(Family::Monospace),
                btext(":gamer mode").family(Family::Monospace),
                rect(Color::CYAN).sized((10, 10)).center(),
                rect(Color::RED).sized((100, 100)).center(),
                rect(Color::PURPLE).sized((50, 50)).align(Align::TOP),
            )
                .span(Dir::RIGHT)
                .center(),
            wtext("pretty cool right?").size(50),
        )
            .span(Dir::DOWN)
            .add(rsc);

        let texts = Span::empty(Dir::DOWN).gap(10).add(rsc);
        let msg_area = texts.scrollable().masked().background(rect(Color::SKY));
        let add_text = wtext("add")
            .editable(EditMode::MultiLine)
            .text_align(Align::LEFT)
            .size(30)
            .attr::<Selectable>(())
            .on(Submit, move |ctx, rsc| {
                let w = ctx.widget;
                let content = w.edit(rsc).take();
                let text = wtext(content)
                    .editable(EditMode::MultiLine)
                    .size(30)
                    .text_align(Align::LEFT)
                    .wrap(true)
                    .attr::<Selectable>(());
                let msg_box = text
                    .background(rect(Color::WHITE.darker(0.5)))
                    .add_strong(rsc);
                texts(rsc).push(msg_box);
            })
            .add(rsc);

        let text_edit_scroll = (
            msg_area.height(rest(1)),
            (
                Rect::new(Color::WHITE.darker(0.9)),
                (
                    add_text.width(rest(1)),
                    Rect::new(Color::GREEN)
                        .on(CursorSense::click(), move |ctx, rsc: &mut ClientRsc| {
                            rsc.run_event::<Submit>(add_text, (), ctx.state);
                        })
                        .sized((40, 40)),
                )
                    .span(Dir::RIGHT)
                    .pad(10),
            )
                .stack()
                .size(StackSize::Child(1))
                .layer_offset(1)
                .align(Align::BOT),
        )
            .span(Dir::DOWN)
            .add(rsc);

        let main = WidgetPtr::new().add(rsc);

        let vals = Rc::new(RefCell::new((0, Vec::new())));
        let mut switch_button = |color, to: WeakWidget, label| {
            let to = to.upgrade(rsc);
            let vec = &mut vals.borrow_mut().1;
            let i = vec.len();
            if vec.is_empty() {
                vec.push(None);
                main(rsc).set(to);
            } else {
                vec.push(Some(to));
            }
            let vals = vals.clone();
            let rect = rect(color)
                .on(CursorSense::click(), move |ctx, rsc| {
                    let (prev, vec) = &mut *vals.borrow_mut();
                    if let Some(h) = vec[i].take() {
                        vec[*prev] = main(rsc).replace(h);
                        *prev = i;
                    }
                    ctx.widget(rsc).color = color.darker(0.3);
                })
                .on(
                    CursorSense::HoverStart | CursorSense::unclick(),
                    move |ctx, rsc| {
                        ctx.widget(rsc).color = color.brighter(0.2);
                    },
                )
                .on(CursorSense::HoverEnd, move |ctx, rsc| {
                    ctx.widget(rsc).color = color;
                });
            (rect, wtext(label).size(30).text_align(Align::CENTER)).stack()
        };

        let tabs = (
            switch_button(Color::RED, pad_test, "pad"),
            switch_button(Color::GREEN, span_test, "span"),
            switch_button(Color::BLUE, span_add_test, "image span"),
            switch_button(Color::MAGENTA, text_test, "text layout"),
            switch_button(
                Color::YELLOW.mul_rgb(0.5),
                text_edit_scroll,
                "text edit scroll",
            ),
        )
            .span(Dir::RIGHT);

        let info = wtext("").add(rsc);
        let info_sect = info.pad(10).align(Align::RIGHT);

        ((tabs.height(40), main.pad(10)).span(Dir::DOWN), info_sect)
            .stack()
            .set_root(rsc, &mut ui_state);

        Self { ui_state, info }
    }

    fn window_event(
        &mut self,
        _: WindowEvent,
        rsc: &mut DefaultRsc<Self>,
        render: &mut UiRenderState,
    ) {
        let new = format!(
            "widgets: {}\nactive: {}\nviews: {}",
            rsc.widgets().len(),
            render.active_widgets(),
            self.ui_state.renderer.ui.view_count(),
        );
        if new != *rsc.widgets()[self.info].content {
            *rsc.widgets_mut()[self.info].content = new;
        }
    }
}