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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/stack_view/card_stack_pinch_gesture_recognizer.h" | 5 #import "ios/chrome/browser/ui/stack_view/card_stack_pinch_gesture_recognizer.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 | 8 |
| 9 #if !defined(__has_feature) || !__has_feature(objc_arc) |
| 10 #error "This file requires ARC support." |
| 11 #endif |
| 12 |
9 @interface CardStackPinchGestureRecognizer () | 13 @interface CardStackPinchGestureRecognizer () |
10 | 14 |
11 // Returns the number of non-ended, non-cancelled touches in |event|. | 15 // Returns the number of non-ended, non-cancelled touches in |event|. |
12 - (NSUInteger)numberOfActiveTouchesInEvent:(UIEvent*)event; | 16 - (NSUInteger)numberOfActiveTouchesInEvent:(UIEvent*)event; |
13 | 17 |
14 @end | 18 @end |
15 | 19 |
16 @implementation CardStackPinchGestureRecognizer | 20 @implementation CardStackPinchGestureRecognizer |
17 | 21 |
18 @synthesize numberOfActiveTouches = numberOfActiveTouches_; | 22 @synthesize numberOfActiveTouches = numberOfActiveTouches_; |
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51 NSUInteger count = 0; | 55 NSUInteger count = 0; |
52 for (UITouch* touch in [event touchesForGestureRecognizer:self]) { | 56 for (UITouch* touch in [event touchesForGestureRecognizer:self]) { |
53 if (touch.phase == UITouchPhaseBegan || touch.phase == UITouchPhaseMoved || | 57 if (touch.phase == UITouchPhaseBegan || touch.phase == UITouchPhaseMoved || |
54 touch.phase == UITouchPhaseStationary) | 58 touch.phase == UITouchPhaseStationary) |
55 count++; | 59 count++; |
56 } | 60 } |
57 return count; | 61 return count; |
58 } | 62 } |
59 | 63 |
60 @end | 64 @end |
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