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1 // Copyright 2012 The Chromium Authors. All rights reserved. | 1 // Copyright 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #import "ios/chrome/browser/ui/side_swipe_gesture_recognizer.h" | 5 #import "ios/chrome/browser/ui/side_swipe_gesture_recognizer.h" |
6 | 6 |
7 #include <cmath> | 7 #include <cmath> |
8 | 8 |
9 #include "base/logging.h" | 9 #include "base/logging.h" |
10 | 10 |
| 11 #if !defined(__has_feature) || !__has_feature(objc_arc) |
| 12 #error "This file requires ARC support." |
| 13 #endif |
| 14 |
11 namespace { | 15 namespace { |
12 | 16 |
13 // The absolute maximum swipe angle from |x = y| for a swipe to begin. | 17 // The absolute maximum swipe angle from |x = y| for a swipe to begin. |
14 const CGFloat kMaxSwipeYAngle = 65; | 18 const CGFloat kMaxSwipeYAngle = 65; |
15 // The minimum distance between touches for a swipe to begin. | 19 // The minimum distance between touches for a swipe to begin. |
16 const CGFloat kDefaultMinSwipeXThreshold = 4; | 20 const CGFloat kDefaultMinSwipeXThreshold = 4; |
17 | 21 |
18 } // namespace | 22 } // namespace |
19 | 23 |
20 @implementation SideSwipeGestureRecognizer { | 24 @implementation SideSwipeGestureRecognizer { |
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141 _startPoint = CGPointZero; | 145 _startPoint = CGPointZero; |
142 [super touchesEnded:touches withEvent:event]; | 146 [super touchesEnded:touches withEvent:event]; |
143 } | 147 } |
144 | 148 |
145 - (void)touchesCancelled:(NSSet*)touches withEvent:(UIEvent*)event { | 149 - (void)touchesCancelled:(NSSet*)touches withEvent:(UIEvent*)event { |
146 _startPoint = CGPointZero; | 150 _startPoint = CGPointZero; |
147 [super touchesCancelled:touches withEvent:event]; | 151 [super touchesCancelled:touches withEvent:event]; |
148 } | 152 } |
149 | 153 |
150 @end | 154 @end |
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