2 files changed, 12 insertions, 0 deletions
diff --git a/core/fxcrt/fx_coordinates.cpp b/core/fxcrt/fx_coordinates.cpp
index 0b6aed44cc..752591d3ed 100644
--- a/core/fxcrt/fx_coordinates.cpp
+++ b/core/fxcrt/fx_coordinates.cpp
@@ -157,6 +157,17 @@ FX_RECT CFX_FloatRect::GetClosestRect() const {
   return rect;
 }
 
+CFX_FloatRect CFX_FloatRect::GetCenterSquare() const {
+  float fWidth = right - left;
+  float fHeight = top - bottom;
+  float fHalfWidth = (fWidth > fHeight) ? fHeight / 2 : fWidth / 2;
+
+  float fCenterX = (left + right) / 2.0f;
+  float fCenterY = (top + bottom) / 2.0f;
+  return CFX_FloatRect(fCenterX - fHalfWidth, fCenterY - fHalfWidth,
+                       fCenterX + fHalfWidth, fCenterY + fHalfWidth);
+}
+
 bool CFX_FloatRect::Contains(const CFX_PointF& point) const {
   CFX_FloatRect n1(*this);
   n1.Normalize();
diff --git a/core/fxcrt/fx_coordinates.h b/core/fxcrt/fx_coordinates.h
index 25923f7290..a1bf11b207 100644
--- a/core/fxcrt/fx_coordinates.h
+++ b/core/fxcrt/fx_coordinates.h
@@ -482,6 +482,7 @@ class CFX_FloatRect {
   FX_RECT GetInnerRect() const;
   FX_RECT GetOuterRect() const;
   FX_RECT GetClosestRect() const;
+  CFX_FloatRect GetCenterSquare() const;
 
   int Substract4(CFX_FloatRect& substract_rect, CFX_FloatRect* pRects);