Basic tables

1 files changed, 101 insertions, 0 deletions

diff --git a/src/library/table.rs b/src/library/table.rs
new file mode 100644
index 00000000..c8e0e17b
--- /dev/null
+++ b/src/library/table.rs
@@ -0,0 +1,101 @@
+//! Tabular container.
+
+use super::prelude::*;
+use super::{GridNode, TrackSizing};
+
+/// A table of items.
+#[derive(Debug, Hash)]
+pub struct TableNode {
+    /// Defines sizing for content rows and columns.
+    pub tracks: Spec<Vec<TrackSizing>>,
+    /// Defines sizing of gutter rows and columns between content.
+    pub gutter: Spec<Vec<TrackSizing>>,
+    /// The nodes to be arranged in the table.
+    pub children: Vec<PackedNode>,
+}
+
+#[class]
+impl TableNode {
+    /// The primary cell fill color.
+    pub const PRIMARY: Option<Paint> = None;
+    /// The secondary cell fill color.
+    pub const SECONDARY: Option<Paint> = None;
+    /// How the stroke the cells.
+    pub const STROKE: Option<Paint> = Some(RgbaColor::BLACK.into());
+    /// The stroke's thickness.
+    pub const THICKNESS: Length = Length::pt(1.0);
+    /// How much to pad the cells's content.
+    pub const PADDING: Linear = Length::pt(5.0).into();
+
+    fn construct(_: &mut EvalContext, args: &mut Args) -> TypResult<Node> {
+        let columns = args.named("columns")?.unwrap_or_default();
+        let rows = args.named("rows")?.unwrap_or_default();
+        let base_gutter: Vec<TrackSizing> = args.named("gutter")?.unwrap_or_default();
+        let column_gutter = args.named("column-gutter")?;
+        let row_gutter = args.named("row-gutter")?;
+        Ok(Node::block(Self {
+            tracks: Spec::new(columns, rows),
+            gutter: Spec::new(
+                column_gutter.unwrap_or_else(|| base_gutter.clone()),
+                row_gutter.unwrap_or(base_gutter),
+            ),
+            children: args.all().collect(),
+        }))
+    }
+
+    fn set(args: &mut Args, styles: &mut StyleMap) -> TypResult<()> {
+        let fill = args.named("fill")?;
+        styles.set_opt(Self::PRIMARY, args.named("primary")?.or(fill));
+        styles.set_opt(Self::SECONDARY, args.named("secondary")?.or(fill));
+        styles.set_opt(Self::STROKE, args.named("stroke")?);
+        styles.set_opt(Self::THICKNESS, args.named("thickness")?);
+        styles.set_opt(Self::PADDING, args.named("padding")?);
+        Ok(())
+    }
+}
+
+impl Layout for TableNode {
+    fn layout(
+        &self,
+        ctx: &mut LayoutContext,
+        regions: &Regions,
+        styles: StyleChain,
+    ) -> Vec<Constrained<Rc<Frame>>> {
+        let primary = styles.get(Self::PRIMARY);
+        let secondary = styles.get(Self::SECONDARY);
+        let thickness = styles.get(Self::THICKNESS);
+        let stroke = styles.get(Self::STROKE).map(|paint| Stroke { paint, thickness });
+        let padding = styles.get(Self::PADDING);
+
+        let cols = self.tracks.x.len();
+        let children = self
+            .children
+            .iter()
+            .cloned()
+            .enumerate()
+            .map(|(i, mut child)| {
+                child = child.padded(Sides::splat(padding));
+
+                if let Some(stroke) = stroke {
+                    child = child.stroked(stroke);
+                }
+
+                let x = i % cols;
+                let y = i / cols;
+                if let Some(fill) = [primary, secondary][(x + y) % 2] {
+                    child = child.filled(fill);
+                }
+
+                child
+            })
+            .collect();
+
+        let grid = GridNode {
+            tracks: self.tracks.clone(),
+            gutter: self.gutter.clone(),
+            children,
+        };
+
+        grid.layout(ctx, regions, styles)
+    }
+}