Add canvas render object.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/ui/render/render_object.cpp b/src/ui/render/render_object.cpp
index d220b1c1..54c2d1b4 100644
--- a/src/ui/render/render_object.cpp
+++ b/src/ui/render/render_object.cpp
@@ -121,6 +121,14 @@ void RenderObject::OnLayoutCore(const Rect& rect) {
 
 void RenderObject::OnAfterLayout() {}
 
+Rect RenderObject::GetPaddingRect() const {
+  Rect rect{Point{}, GetSize()};
+  rect = rect.Shrink(GetMargin());
+  rect.width = std::max(rect.width, 0.0f);
+  rect.height = std::max(rect.height, 0.0f);
+  return rect;
+}
+
 Rect RenderObject::GetContentRect() const {
   Rect rect{Point{}, GetSize()};
   rect = rect.Shrink(GetMargin());