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1 files changed, 36 insertions, 0 deletions

diff --git a/include/cru/ui/render/CanvasRenderObject.h b/include/cru/ui/render/CanvasRenderObject.h
new file mode 100644
index 00000000..ca55ebc6
--- /dev/null
+++ b/include/cru/ui/render/CanvasRenderObject.h
@@ -0,0 +1,36 @@
+#pragma once
+#include "RenderObject.h"
+
+namespace cru::ui::render {
+// Layout logic:
+// If no preferred size is set. Then (100, 100) is used and then coerced to
+// required range.
+class CRU_UI_API CanvasRenderObject : public RenderObject {
+ public:
+  CanvasRenderObject();
+
+  CRU_DELETE_COPY(CanvasRenderObject)
+  CRU_DELETE_MOVE(CanvasRenderObject)
+
+  ~CanvasRenderObject();
+
+ public:
+  RenderObject* HitTest(const Point& point) override;
+
+  Size GetDesiredSize() const { return desired_size_; }
+
+  IEvent<CanvasPaintEventArgs>* PaintEvent() { return &paint_event_; }
+
+ protected:
+  void OnDrawContent(platform::graphics::IPainter* painter) override;
+
+  Size OnMeasureContent(const MeasureRequirement& requirement,
+                        const MeasureSize& preferred_size) override;
+  void OnLayoutContent(const Rect& content_rect) override;
+
+ private:
+  Size desired_size_{};
+
+  Event<CanvasPaintEventArgs> paint_event_;
+};
+}  // namespace cru::ui::render