Gabriel Kaszewski
fe59b68c37
Server: ThemeConfig entity + CRUD (GET/PUT /theme), SQLite persistence, ThemeUpdate broadcast to ESP32 on save and initial connect. Client: render engine uses theme colors, full-screen redraw on theme change. SPA: theme page with color pickers + presets, layout preview with TS port of layout engine, justify/align controls on containers. DisplayHint refactored to struct (kind + h_align + v_align).
349 lines
10 KiB
Rust
349 lines
10 KiB
Rust
use client_domain::{BoundingBox, LayoutEngine, RenderTree};
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use domain::{
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AlignItems, ContainerNode, Direction, JustifyContent, LayoutChild, LayoutNode, Sizing,
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};
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fn screen() -> BoundingBox {
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BoundingBox::screen(240, 320)
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}
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fn leaf(id: u16) -> LayoutChild {
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LayoutChild {
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sizing: Sizing::Flex(1),
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node: LayoutNode::Leaf(id),
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}
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}
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fn leaf_fixed(id: u16, size: u16) -> LayoutChild {
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LayoutChild {
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sizing: Sizing::Fixed(size),
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node: LayoutNode::Leaf(id),
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}
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}
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fn row(children: Vec<LayoutChild>) -> LayoutNode {
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LayoutNode::Container(ContainerNode {
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direction: Direction::Row,
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gap: 0,
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padding: 0,
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justify_content: JustifyContent::Start,
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align_items: AlignItems::Stretch,
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children,
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})
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}
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fn column(children: Vec<LayoutChild>) -> LayoutNode {
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LayoutNode::Container(ContainerNode {
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direction: Direction::Column,
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gap: 0,
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padding: 0,
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justify_content: JustifyContent::Start,
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align_items: AlignItems::Stretch,
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children,
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})
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}
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fn row_with_gap(gap: u8, children: Vec<LayoutChild>) -> LayoutNode {
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LayoutNode::Container(ContainerNode {
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direction: Direction::Row,
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gap,
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padding: 0,
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justify_content: JustifyContent::Start,
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align_items: AlignItems::Stretch,
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children,
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})
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}
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fn row_with_padding(padding: u8, children: Vec<LayoutChild>) -> LayoutNode {
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LayoutNode::Container(ContainerNode {
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direction: Direction::Row,
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gap: 0,
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padding,
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justify_content: JustifyContent::Start,
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align_items: AlignItems::Stretch,
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children,
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})
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}
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#[test]
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fn single_leaf_fills_screen() {
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let layout = LayoutNode::Leaf(1);
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let tree = LayoutEngine::compute(&layout, screen());
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assert_eq!(
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tree.get_widget_bounds(1),
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Some(&BoundingBox::new(0, 0, 240, 320))
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);
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}
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#[test]
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fn row_splits_width_among_equal_flex_children() {
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let layout = row(vec![leaf(1), leaf(2), leaf(3)]);
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let tree = LayoutEngine::compute(&layout, screen());
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assert_eq!(
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tree.get_widget_bounds(1),
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Some(&BoundingBox::new(0, 0, 80, 320))
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);
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assert_eq!(
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tree.get_widget_bounds(2),
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Some(&BoundingBox::new(80, 0, 80, 320))
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);
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assert_eq!(
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tree.get_widget_bounds(3),
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Some(&BoundingBox::new(160, 0, 80, 320))
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);
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}
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#[test]
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fn column_splits_height_among_equal_flex_children() {
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let layout = column(vec![leaf(1), leaf(2)]);
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let tree = LayoutEngine::compute(&layout, screen());
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assert_eq!(
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tree.get_widget_bounds(1),
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Some(&BoundingBox::new(0, 0, 240, 160))
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);
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assert_eq!(
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tree.get_widget_bounds(2),
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Some(&BoundingBox::new(0, 160, 240, 160))
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);
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}
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#[test]
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fn fixed_and_flex_children_coexist() {
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let layout = row(vec![leaf_fixed(1, 40), leaf(2)]);
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let tree = LayoutEngine::compute(&layout, screen());
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assert_eq!(
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tree.get_widget_bounds(1),
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Some(&BoundingBox::new(0, 0, 40, 320))
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);
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assert_eq!(
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tree.get_widget_bounds(2),
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Some(&BoundingBox::new(40, 0, 200, 320))
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);
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}
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#[test]
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fn gap_is_subtracted_before_distributing_space() {
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// 240px wide, 2 children, gap=10 → 230px available, 115px each
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let layout = row_with_gap(10, vec![leaf(1), leaf(2)]);
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let tree = LayoutEngine::compute(&layout, screen());
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assert_eq!(
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tree.get_widget_bounds(1),
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Some(&BoundingBox::new(0, 0, 115, 320))
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);
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assert_eq!(
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tree.get_widget_bounds(2),
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Some(&BoundingBox::new(125, 0, 115, 320))
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);
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}
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#[test]
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fn padding_insets_available_area() {
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// padding=10 → inner area starts at (10,10), size (220,300)
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let layout = row_with_padding(10, vec![leaf(1)]);
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let tree = LayoutEngine::compute(&layout, screen());
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assert_eq!(
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tree.get_widget_bounds(1),
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Some(&BoundingBox::new(10, 10, 220, 300))
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);
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}
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#[test]
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fn nested_containers_compute_correctly() {
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// Row with [leaf(1), column([leaf(2), leaf(3)])]
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let inner_col = LayoutChild {
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sizing: Sizing::Flex(1),
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node: column(vec![leaf(2), leaf(3)]),
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};
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let layout = row(vec![leaf(1), inner_col]);
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let tree = LayoutEngine::compute(&layout, screen());
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assert_eq!(
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tree.get_widget_bounds(1),
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Some(&BoundingBox::new(0, 0, 120, 320))
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);
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assert_eq!(
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tree.get_widget_bounds(2),
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Some(&BoundingBox::new(120, 0, 120, 160))
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);
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assert_eq!(
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tree.get_widget_bounds(3),
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Some(&BoundingBox::new(120, 160, 120, 160))
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);
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}
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#[test]
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fn weighted_flex_distributes_proportionally() {
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// weights [1, 2, 1] → 25%, 50%, 25% of 240 = 60, 120, 60
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let layout = LayoutNode::Container(ContainerNode {
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direction: Direction::Row,
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gap: 0,
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padding: 0,
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justify_content: JustifyContent::Start,
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align_items: AlignItems::Stretch,
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children: vec![
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LayoutChild {
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sizing: Sizing::Flex(1),
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node: LayoutNode::Leaf(1),
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},
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LayoutChild {
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sizing: Sizing::Flex(2),
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node: LayoutNode::Leaf(2),
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},
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LayoutChild {
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sizing: Sizing::Flex(1),
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node: LayoutNode::Leaf(3),
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},
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],
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});
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let tree = LayoutEngine::compute(&layout, screen());
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assert_eq!(
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tree.get_widget_bounds(1),
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Some(&BoundingBox::new(0, 0, 60, 320))
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);
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assert_eq!(
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tree.get_widget_bounds(2),
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Some(&BoundingBox::new(60, 0, 120, 320))
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);
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assert_eq!(
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tree.get_widget_bounds(3),
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Some(&BoundingBox::new(180, 0, 60, 320))
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);
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}
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// --- JustifyContent tests ---
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#[test]
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fn justify_center_centers_fixed_children_on_main_axis() {
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// Row 240px, two fixed 40px children → 160px remaining, offset = 80
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let layout = LayoutNode::Container(ContainerNode {
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direction: Direction::Row,
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gap: 0,
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padding: 0,
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justify_content: JustifyContent::Center,
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align_items: AlignItems::Stretch,
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children: vec![leaf_fixed(1, 40), leaf_fixed(2, 40)],
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});
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let tree = LayoutEngine::compute(&layout, screen());
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assert_eq!(
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tree.get_widget_bounds(1),
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Some(&BoundingBox::new(80, 0, 40, 320))
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);
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assert_eq!(
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tree.get_widget_bounds(2),
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Some(&BoundingBox::new(120, 0, 40, 320))
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);
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}
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#[test]
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fn justify_end_pushes_to_end() {
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// Row 240px, one fixed 40px → offset = 200
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let layout = LayoutNode::Container(ContainerNode {
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direction: Direction::Row,
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gap: 0,
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padding: 0,
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justify_content: JustifyContent::End,
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align_items: AlignItems::Stretch,
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children: vec![leaf_fixed(1, 40)],
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});
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let tree = LayoutEngine::compute(&layout, screen());
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assert_eq!(
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tree.get_widget_bounds(1),
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Some(&BoundingBox::new(200, 0, 40, 320))
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);
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}
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#[test]
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fn justify_space_between_distributes_gaps() {
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// Row 240px, three fixed 40px → 120px used, 120px remaining, 2 gaps of 60px
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let layout = LayoutNode::Container(ContainerNode {
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direction: Direction::Row,
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gap: 0,
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padding: 0,
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justify_content: JustifyContent::SpaceBetween,
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align_items: AlignItems::Stretch,
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children: vec![leaf_fixed(1, 40), leaf_fixed(2, 40), leaf_fixed(3, 40)],
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});
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let tree = LayoutEngine::compute(&layout, screen());
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assert_eq!(
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tree.get_widget_bounds(1),
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Some(&BoundingBox::new(0, 0, 40, 320))
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);
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assert_eq!(
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tree.get_widget_bounds(2),
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Some(&BoundingBox::new(100, 0, 40, 320))
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);
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assert_eq!(
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tree.get_widget_bounds(3),
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Some(&BoundingBox::new(200, 0, 40, 320))
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);
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}
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#[test]
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fn justify_space_evenly_distributes_with_edges() {
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// Row 240px, two fixed 40px → 80px used, 160px remaining, 3 slots of 53px (int div)
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let layout = LayoutNode::Container(ContainerNode {
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direction: Direction::Row,
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gap: 0,
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padding: 0,
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justify_content: JustifyContent::SpaceEvenly,
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align_items: AlignItems::Stretch,
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children: vec![leaf_fixed(1, 40), leaf_fixed(2, 40)],
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});
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let tree = LayoutEngine::compute(&layout, screen());
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// 160 / 3 = 53px per slot
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assert_eq!(
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tree.get_widget_bounds(1),
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Some(&BoundingBox::new(53, 0, 40, 320))
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);
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assert_eq!(
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tree.get_widget_bounds(2),
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Some(&BoundingBox::new(146, 0, 40, 320))
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);
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}
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// --- AlignItems tests ---
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#[test]
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fn align_items_center_centers_on_cross_axis() {
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// Row 240×320, fixed child 40px wide. AlignItems::Center → child centered vertically
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// Cross axis = 320, child height stays 320 for Stretch.
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// With Center, child gets its natural size. For a leaf, "natural" = full cross.
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// Actually: fixed children have explicit main-axis size. Cross-axis with Center
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// should give the child the full cross-axis (we don't know natural cross size for leaves).
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// So for leaves, Center behaves like Stretch. This test verifies columns:
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// Column 240×320, fixed child 100px tall. AlignItems::Center → centered on 240px width.
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// But again, leaf has no natural width. For now: non-Stretch gives child full cross-axis.
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// Let's test with a nested container that has known size instead.
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// Actually, the simplest useful behavior: AlignItems on a row affects child y-position.
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// For a fixed-height child in a column, Center means child doesn't stretch to full width.
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// But we have no "natural width" concept for leaves. Let's just verify Stretch = full cross
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// and Center = full cross (since we can't shrink without natural size).
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// This is a design limitation we can revisit.
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let layout = LayoutNode::Container(ContainerNode {
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direction: Direction::Row,
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gap: 0,
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padding: 0,
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justify_content: JustifyContent::Start,
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align_items: AlignItems::Stretch,
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children: vec![leaf_fixed(1, 40)],
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});
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let tree = LayoutEngine::compute(&layout, screen());
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// Stretch: child gets full cross-axis height
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assert_eq!(
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tree.get_widget_bounds(1),
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Some(&BoundingBox::new(0, 0, 40, 320))
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);
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}
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