--- /dev/null
+//
+// ZFModalTransitionAnimator.h
+//
+// Created by Amornchai Kanokpullwad on 5/10/14.
+// Copyright (c) 2014 zoonref. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
+#import <UIKit/UIGestureRecognizerSubclass.h>
+
+typedef NS_ENUM(NSUInteger, ZFModalTransitonDirection) {
+ ZFModalTransitonDirectionBottom,
+ ZFModalTransitonDirectionLeft,
+ ZFModalTransitonDirectionRight,
+};
+
+@interface ZFDetectScrollViewEndGestureRecognizer : UIPanGestureRecognizer
+@property (nonatomic, weak) UIScrollView *scrollview;
+@end
+
+@interface ZFModalTransitionAnimator : UIPercentDrivenInteractiveTransition <UIViewControllerAnimatedTransitioning, UIViewControllerTransitioningDelegate, UIGestureRecognizerDelegate>
+
+@property (nonatomic, assign, getter=isDragable) BOOL dragable;
+@property (nonatomic, readonly) ZFDetectScrollViewEndGestureRecognizer *gesture;
+@property (nonatomic, assign) UIGestureRecognizer *gestureRecognizerToFailPan;
+@property BOOL bounces;
+@property (nonatomic) ZFModalTransitonDirection direction;
+@property CGFloat behindViewScale;
+@property CGFloat behindViewAlpha;
+@property CGFloat transitionDuration;
+
+- (id)initWithModalViewController:(UIViewController *)modalViewController;
+- (void)setContentScrollView:(UIScrollView *)scrollView;
+
+@end