1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#import "WALTTouch.h"
18
19@implementation WALTTouch
20- (instancetype)initWithEvent:(UIEvent *)event {
21  if ((self = [super init])) {
22    if ([event allTouches].count > 1) {
23      NSLog(@"Multiple touches in event; taking any.");
24    }
25    self.kernelTime = event.timestamp;
26
27    UITouch *touch = [[event allTouches] anyObject];
28    self.phase = touch.phase;
29    if ([touch respondsToSelector:@selector(preciseLocationInView:)]) {  // iOS 9.1+
30      self.location = [touch preciseLocationInView:nil];
31    } else {
32      self.location = [touch locationInView:nil];
33    }
34  }
35  return self;
36}
37@end
38