Add stack layout.

1 files changed, 22 insertions, 0 deletions

diff --git a/include/cru/ui/render/stack_layout_render_object.hpp b/include/cru/ui/render/stack_layout_render_object.hpp
new file mode 100644
index 00000000..0d33e7e3
--- /dev/null
+++ b/include/cru/ui/render/stack_layout_render_object.hpp
@@ -0,0 +1,22 @@
+#pragma once
+#include "layout_render_object.hpp"
+
+namespace cru::ui::render {
+struct StackChildLayoutData {
+  Alignment horizontal = Alignment::Start;
+  Alignment vertical = Alignment::Start;
+};
+
+class StackLayoutRenderObject
+    : public LayoutRenderObject<StackChildLayoutData> {
+ public:
+  StackLayoutRenderObject() = default;
+  CRU_DELETE_COPY(StackLayoutRenderObject)
+  CRU_DELETE_MOVE(StackLayoutRenderObject)
+  ~StackLayoutRenderObject() = default;
+
+ protected:
+  Size OnMeasureContent(const Size& available_size) override;
+  void OnLayoutContent(const Rect& content_rect) override;
+};
+}  // namespace cru::ui::render