Added anchor height property to the CalloutBackgroundView for custom …

…background view with custom arrow.

SMCalloutView.h

@@ -91,6 +91,7 @@ extern NSTimeInterval const kSMCalloutViewRepositionDelayForUIScrollView;
 @property (nonatomic, assign) CGPoint arrowPoint; // indicates where the tip of the arrow should be drawn, as a pixel offset
 @property (nonatomic, assign) BOOL highlighted; // will be set by the callout when the callout is in a highlighted state
 @property (nonatomic, assign) CALayer *contentMask; // returns an optional layer whose contents should mask the callout view's contents (not honored by SMClassicCalloutView)
+@property (nonatomic, assign) CGFloat anchorHeight; //The arrow height, useful for custom background view with custom arrow
 @end
 
 // Default for iOS 7, this reproduces the "masked" behavior of the iOS 7-style callout view.

SMCalloutView.m

@@ -27,7 +27,7 @@ @interface UIView (SMFrameAdditions)
 #define BETWEEN_ACCESSORIES_MARGIN 7 // margin between accessories when no title/subtitle is present
 #define CONTENT_VIEW_MARGIN 12 // margin around content view when present, can be overridden with contentViewMargin
 #define ANCHOR_MARGIN 27 // the smallest possible distance from the edge of our control to the "tip" of the anchor, from either left or right
-#define ANCHOR_HEIGHT 13 // effective height of the anchor
+#define DEFAULT_ANCHOR_HEIGHT 13 // effective height of the anchor, will be overriden by anchorHeight propertiy of the SMCalloutBackgroundView if asigned. 
 #define TOP_ANCHOR_MARGIN 13 // all the above measurements assume a bottom anchor! if we're pointing "up" we'll need to add this top margin to everything.
 #define COMFORTABLE_MARGIN 10 // when we try to reposition content to be visible, we'll consider this margin around your target rect
 
@@ -197,7 +197,13 @@ - (CGFloat)innerContentMarginRight {
 }
 
 - (CGFloat)calloutHeight {
-    return self.calloutContainerHeight + ANCHOR_HEIGHT;
+    if(self.backgroundView.anchorHeight)
+    {
+        return self.calloutContainerHeight + self.backgroundView.anchorHeight;
+    }
+    else {
+        return self.calloutContainerHeight + DEFAULT_ANCHOR_HEIGHT;
+    }
 }
 
 - (CGFloat)calloutContainerHeight {