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1 files changed, 45 insertions, 0 deletions

diff --git a/src/ui/render/WindowRenderObject.cpp b/src/ui/render/WindowRenderObject.cpp
new file mode 100644
index 00000000..cd1f806f
--- /dev/null
+++ b/src/ui/render/WindowRenderObject.cpp
@@ -0,0 +1,45 @@
+#include "cru/ui/render/WindowRenderObject.hpp"
+
+#include "../Helper.hpp"
+#include "cru/platform/graph/util/Painter.hpp"
+#include "cru/ui/UiHost.hpp"
+
+namespace cru::ui::render {
+WindowRenderObject::WindowRenderObject(UiHost* host) {
+  SetChildMode(ChildMode::Single);
+  ui_host_ = host;
+  after_layout_event_guard_.Reset(host->AfterLayoutEvent()->AddHandler(
+      [this](auto) { NotifyAfterLayoutRecursive(this); }));
+}
+
+void WindowRenderObject::Draw(platform::graph::IPainter* painter) {
+  painter->Clear(colors::white);
+  if (const auto child = GetChild()) {
+    auto offset = child->GetOffset();
+    platform::graph::util::WithTransform(
+        painter, platform::Matrix::Translation(offset.x, offset.y),
+        [child](platform::graph::IPainter* p) { child->Draw(p); });
+  }
+}
+
+RenderObject* WindowRenderObject::HitTest(const Point& point) {
+  if (const auto child = GetChild()) {
+    auto offset = child->GetOffset();
+    Point p{point.x - offset.x, point.y - offset.y};
+    const auto result = child->HitTest(p);
+    if (result != nullptr) {
+      return result;
+    }
+  }
+  return Rect{Point{}, GetSize()}.IsPointInside(point) ? this : nullptr;
+}
+
+Size WindowRenderObject::OnMeasureContent(const Size& available_size) {
+  if (const auto child = GetChild()) child->Measure(available_size);
+  return available_size;
+}
+
+void WindowRenderObject::OnLayoutContent(const Rect& content_rect) {
+  if (const auto child = GetChild()) child->Layout(content_rect);
+}
+}  // namespace cru::ui::render