[core] Add NIRectExpand.

lts1610 · Oct 22, 2012 · da8a358 · da8a358
1 parent be3ebee
commit da8a358
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diff --git a/src/core/src/NIFoundationMethods.h b/src/core/src/NIFoundationMethods.h
@@ -57,6 +57,15 @@ extern "C" {
  */
 CGRect NIRectContract(CGRect rect, CGFloat dx, CGFloat dy);
 
+/**
+ * Modifies only the right and bottom edges of a CGRect.
+ *
+ *      @return a CGRect with dx and dy added to the width and height.
+ *
+ *      Example result: CGRectMake(x, y, w + dx, h + dy)
+ */
+CGRect NIRectExpand(CGRect rect, CGFloat dx, CGFloat dy);
+
 /**
  * Modifies only the top and left edges of a CGRect.
  *

diff --git a/src/core/src/NIFoundationMethods.m b/src/core/src/NIFoundationMethods.m
@@ -35,6 +35,12 @@ CGRect NIRectContract(CGRect rect, CGFloat dx, CGFloat dy) {
 }
 
 
+///////////////////////////////////////////////////////////////////////////////////////////////////
+CGRect NIRectExpand(CGRect rect, CGFloat dx, CGFloat dy) {
+  return CGRectMake(rect.origin.x, rect.origin.y, rect.size.width + dx, rect.size.height + dy);
+}
+
+
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 CGRect NIRectShift(CGRect rect, CGFloat dx, CGFloat dy) {
   return CGRectOffset(NIRectContract(rect, dx, dy), dx, dy);