Added cursor convenience methods to DTAttributedTextContentView #505

Core/Source/DTAttributedTextContentView.h

@@ -339,3 +339,26 @@ typedef NSUInteger DTAttributedTextContentViewRelayoutMask;
 
 @end
 
+
+/**
+ Methods for getting cursor position and frame. Those are convenience methods that call through to the layoutFrame property which has the same coordinate system as the receiver.
+ */
+@interface DTAttributedTextContentView (Cursor)
+
+/**
+ Determines the closest string index to a point in the receiver's frame.
+ 
+ This can be used to find the cursor position to position an input caret at.
+ @param point The point
+ @returns The resulting string index
+ */
+- (NSInteger)closestCursorIndexToPoint:(CGPoint)point;
+
+/**
+ The rectangle to draw a caret for a given index
+ @param index The string index for which to determine a cursor frame
+ @returns The cursor rectangle
+ */
+- (CGRect)cursorRectAtIndex:(NSInteger)index;
+
+@end

Core/Source/DTAttributedTextContentView.m

@@ -87,6 +87,21 @@ + (Class)layerClass
 @end
 
 
+@implementation DTAttributedTextContentView (Cursor)
+
+- (NSInteger)closestCursorIndexToPoint:(CGPoint)point
+{
+	return [self.layoutFrame closestCursorIndexToPoint:point];
+}
+
+- (CGRect)cursorRectAtIndex:(NSInteger)index
+{
+	return [self.layoutFrame cursorRectAtIndex:index];
+}
+
+@end
+
+
 @implementation DTAttributedTextContentView
 
 - (void)setup