feat: wire up stretch into place

tests/margin.rs

@@ -0,0 +1,102 @@
+use stretch2 as stretch;
+
+#[test]
+fn margin_and_flex_row() {
+    let mut stretch = stretch::Stretch::new();
+    let node0 = stretch
+        .new_node(
+            stretch::style::Style {
+                flex_grow: 1f32,
+                margin: stretch::geometry::Rect {
+                    start: stretch::style::Dimension::Points(10f32),
+                    end: stretch::style::Dimension::Points(10f32),
+                    ..Default::default()
+                },
+                ..Default::default()
+            },
+            &[],
+        )
+        .unwrap();
+    let node = stretch
+        .new_node(
+            stretch::style::Style {
+                size: stretch::geometry::Size {
+                    width: stretch::style::Dimension::Points(100f32),
+                    height: stretch::style::Dimension::Points(100f32),
+                    ..Default::default()
+                },
+                ..Default::default()
+            },
+            &[node0],
+        )
+        .unwrap();
+    stretch
+        .compute_layout(node, stretch::geometry::Size::undefined())
+        .unwrap();
+    assert_eq!(stretch.layout(node).unwrap().size.width, 100f32);
+    assert_eq!(stretch.layout(node).unwrap().size.height, 100f32);
+    assert_eq!(stretch.layout(node).unwrap().location.x, 0f32);
+    assert_eq!(stretch.layout(node).unwrap().location.y, 0f32);
+    assert_eq!(stretch.layout(node0).unwrap().size.width, 80f32);
+    assert_eq!(stretch.layout(node0).unwrap().size.height, 100f32);
+    assert_eq!(stretch.layout(node0).unwrap().location.x, 10f32);
+    assert_eq!(stretch.layout(node0).unwrap().location.y, 0f32);
+}
+
+#[test]
+fn margin_and_flex_row2() {
+    let mut stretch = stretch::Stretch::new();
+    let node0 = stretch
+        .new_node(
+            stretch::style::Style {
+                flex_grow: 1f32,
+                margin: stretch::geometry::Rect {
+                    // left
+                    start: stretch::style::Dimension::Points(10f32),
+
+                    // right?
+                    end: stretch::style::Dimension::Points(10f32),
+
+                    // top?
+                    // top: stretch::style::Dimension::Points(10f32),
+
+                    // bottom?
+                    // bottom: stretch::style::Dimension::Points(10f32),
+                    ..Default::default()
+                },
+                ..Default::default()
+            },
+            &[],
+        )
+        .unwrap();
+
+    let node = stretch
+        .new_node(
+            stretch::style::Style {
+                size: stretch::geometry::Size {
+                    width: stretch::style::Dimension::Points(100f32),
+                    height: stretch::style::Dimension::Points(100f32),
+                    ..Default::default()
+                },
+                ..Default::default()
+            },
+            &[node0],
+        )
+        .unwrap();
+
+    stretch
+        .compute_layout(node, stretch::geometry::Size::undefined())
+        .unwrap();
+
+    assert_eq!(stretch.layout(node).unwrap().size.width, 100f32);
+    assert_eq!(stretch.layout(node).unwrap().size.height, 100f32);
+    assert_eq!(stretch.layout(node).unwrap().location.x, 0f32);
+    assert_eq!(stretch.layout(node).unwrap().location.y, 0f32);
+
+    dbg!(stretch.layout(node0));
+
+    // assert_eq!(stretch.layout(node0).unwrap().size.width, 80f32);
+    // assert_eq!(stretch.layout(node0).unwrap().size.height, 100f32);
+    // assert_eq!(stretch.layout(node0).unwrap().location.x, 10f32);
+    // assert_eq!(stretch.layout(node0).unwrap().location.y, 0f32);
+}