patina/examples/table_layout.rs

use kahlo::math::PixelSideOffsets;
use patina::{
    layout::{HorizontalAlignment, TableCell, VerticalAlignment},
    prelude::*,
    ui::{UIControlMsg, UIHandle},
    widget,
};

struct TableWindow {
    root: widget::PlainGroup<Self>,
}

impl TableWindow {
    fn new(uih: &mut UIHandle) -> Self {
        let mut group = widget::PlainGroup::new_table(uih);
        group.extend(
            vec![
                widget::Label::new_with_text(uih, "x0y0")
                    .with_valign(VerticalAlignment::Centre)
                    // .framed()
                    .with_table_cell(TableCell::new(0, 0))
                    .boxed(),
                widget::Label::new_with_text(uih, "x0y1 [left aligned]")
                    .with_halign(HorizontalAlignment::Left)
                    .with_valign(VerticalAlignment::Centre)
                    .framed()
                    .with_margins(PixelSideOffsets::new_all_same(15))
                    .with_table_cell(TableCell::new(0, 1))
                    .boxed(),
                widget::Label::new_with_text(uih, "x1y1")
                    .with_valign(VerticalAlignment::Centre)
                    // .framed()
                    .with_table_cell(TableCell::new(1, 1))
                    .boxed(),
                widget::Label::new_with_text(uih, "x1y2")
                    .with_valign(VerticalAlignment::Centre)
                    .framed()
                    .with_table_cell(TableCell::new(1, 2))
                    .boxed(),
                widget::Label::new_with_text(uih, "x3y2")
                    .with_valign(VerticalAlignment::Centre)
                    // .framed()
                    .with_table_cell(TableCell::new(3, 2))
                    .boxed(),
            ]
            .into_iter(),
        );
        Self { root: group }
    }
}

impl Component for TableWindow {
    type ParentMsg = UIControlMsg;
    type Msg = ();

    fn process(&mut self, _msg: Self::Msg) -> Vec<Self::ParentMsg> {
        let mut out = String::new();
        patina::layout::dump_node_tree(self.root.layout_node(), &mut out);
        std::fs::write("patina-table-layout-example.layout_tree", out)
            .expect("couldn't dump node tree");
        vec![UIControlMsg::Terminate]
    }
}

impl WindowComponent for TableWindow {
    fn map_window_event(&self, we: patina::window::WindowEvent) -> Option<Self::Msg> {
        match we {
            patina::window::WindowEvent::CloseRequested => Some(()),
            _ => None,
        }
    }

    type RootWidget = widget::PlainGroup<Self>;
    fn root_widget(&self) -> &Self::RootWidget {
        &self.root
    }
    fn root_widget_mut(&mut self) -> &mut Self::RootWidget {
        &mut self.root
    }
}

fn main() {
    patina::ui::make_opinionated_ui(TableWindow::new).run();
}