Merge pull request #52 from hecrj/custom-layout-engine

Custom layout engine

1 files changed, 64 insertions, 0 deletions

diff --git a/native/src/layout/node.rs b/native/src/layout/node.rs
new file mode 100644
index 00000000..64ebf2d0
--- /dev/null
+++ b/native/src/layout/node.rs
@@ -0,0 +1,64 @@
+use crate::{Align, Rectangle, Size};
+
+#[derive(Debug, Clone, Default)]
+pub struct Node {
+    pub bounds: Rectangle,
+    children: Vec<Node>,
+}
+
+impl Node {
+    pub fn new(size: Size) -> Self {
+        Self::with_children(size, Vec::new())
+    }
+
+    pub fn with_children(size: Size, children: Vec<Node>) -> Self {
+        Node {
+            bounds: Rectangle {
+                x: 0.0,
+                y: 0.0,
+                width: size.width,
+                height: size.height,
+            },
+            children,
+        }
+    }
+
+    pub fn size(&self) -> Size {
+        Size::new(self.bounds.width, self.bounds.height)
+    }
+
+    pub fn bounds(&self) -> Rectangle {
+        self.bounds
+    }
+
+    pub fn children(&self) -> &[Node] {
+        &self.children
+    }
+
+    pub fn align(
+        &mut self,
+        horizontal_alignment: Align,
+        vertical_alignment: Align,
+        space: Size,
+    ) {
+        match horizontal_alignment {
+            Align::Start => {}
+            Align::Center => {
+                self.bounds.x += (space.width - self.bounds.width) / 2.0;
+            }
+            Align::End => {
+                self.bounds.x += space.width - self.bounds.width;
+            }
+        }
+
+        match vertical_alignment {
+            Align::Start => {}
+            Align::Center => {
+                self.bounds.y += (space.height - self.bounds.height) / 2.0;
+            }
+            Align::End => {
+                self.bounds.y += space.height - self.bounds.height;
+            }
+        }
+    }
+}