add indexForCell

catlan · AlanQuatermain · commit 2a86b778abe7 · 2010-05-27T03:52:19.000+08:00
diff --git a/Classes/AQGridView.h b/Classes/AQGridView.h
@@ -172,6 +172,7 @@ extern NSString * const AQGridViewSelectionDidChangeNotification;
 - (CGRect) rectForItemAtIndex: (NSUInteger) index;
 - (AQGridViewCell *) cellForItemAtIndex: (NSUInteger) index;
 - (NSUInteger) indexForItemAtPoint: (CGPoint) point;
+- (NSUInteger) indexForCell: (AQGridViewCell *) cell;
 - (AQGridViewCell *) cellForItemAtPoint: (CGPoint) point;
 
 - (NSArray *) visibleCells;
diff --git a/Classes/AQGridView.m b/Classes/AQGridView.m
@@ -615,6 +615,15 @@ - (NSUInteger) indexForItemAtPoint: (CGPoint) point
 	return ( [_gridData itemIndexForPoint: point] );
 }
 
+- (NSUInteger) indexForCell: (AQGridViewCell *) cell
+{
+	NSUInteger index = [_visibleCells indexOfObject:cell];
+	if (index == NSNotFound)
+		return NSNotFound;
+	
+	return _visibleIndices.location + index;
+}
+
 - (AQGridViewCell *) cellForItemAtPoint: (CGPoint) point
 {
 	return ( [self cellForItemAtIndex: [_gridData itemIndexForPoint: point]] );
