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SCLTimerDisplay.m
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136 lines (113 loc) · 3.75 KB
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//
// SCLTimerDisplay.m
// SCLAlertView
//
// Created by Taylor Ryan on 8/18/15.
// Copyright (c) 2015-2016 AnyKey Entertainment. All rights reserved.
//
#import "SCLTimerDisplay.h"
@interface SCLTimerDisplay ()
@property (strong, nonatomic) UILabel *countLabel;
@end
@implementation SCLTimerDisplay
#define DEGREES_TO_RADIANS(degrees) ((M_PI * degrees)/ 180)
#define TIMER_STEP .01
#define START_DEGREE_OFFSET -90
@synthesize currentAngle;
- (instancetype)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self)
{
self.backgroundColor = [UIColor clearColor];
currentAngle = 0.0f;
}
return self;
}
- (instancetype)initWithOrigin:(CGPoint)origin radius:(CGFloat)r
{
return [self initWithOrigin:(CGPoint)origin radius:r lineWidth:5.0f];
}
- (instancetype)initWithOrigin:(CGPoint)origin radius:(CGFloat)r lineWidth:(CGFloat)width
{
self = [super initWithFrame:CGRectMake(origin.x, origin.y, r*2, r*2)];
if (self) {
self.backgroundColor = [UIColor clearColor];
currentAngle = START_DEGREE_OFFSET;
radius = r-(width/2);
lineWidth = width;
self.color = [UIColor whiteColor];
self.userInteractionEnabled = NO;
// Add count label
_countLabel = [[UILabel alloc] init];
_countLabel.textColor = [UIColor whiteColor];
_countLabel.backgroundColor = [UIColor clearColor];
_countLabel.font = [UIFont fontWithName: @"HelveticaNeue-Bold" size:12.0f];
_countLabel.textAlignment = NSTextAlignmentCenter;
_countLabel.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;
[self addSubview:_countLabel];
}
return self;
}
- (void)updateFrame:(CGSize)size
{
CGFloat r = radius+(lineWidth/2);
CGFloat originX = size.width - (2*r) - 5;
CGFloat originY = (size.height - (2*r))/2;
self.frame = CGRectMake(originX, originY, r*2, r*2);
self.countLabel.frame = CGRectMake(0, 0, r*2, r*2);
}
- (void)drawRect:(CGRect)rect
{
UIBezierPath* aPath = [UIBezierPath bezierPathWithArcCenter:CGPointMake(radius+(lineWidth/2), radius+(lineWidth/2))
radius:radius
startAngle:DEGREES_TO_RADIANS(START_DEGREE_OFFSET)
endAngle:DEGREES_TO_RADIANS(currentAngle)
clockwise:YES];
[self.color setStroke];
aPath.lineWidth = lineWidth;
[aPath stroke];
_countLabel.text = [NSString stringWithFormat:@"%d", (int)currentTime];
}
- (void)startTimerWithTimeLimit:(int)tl completed:(SCLActionBlock)completed
{
if (_reverse)
{
currentTime = tl;
}
timerLimit = tl;
timer = [NSTimer scheduledTimerWithTimeInterval:TIMER_STEP target:self selector:@selector(updateTimerButton:) userInfo:nil repeats:YES];
completedBlock = completed;
_countLabel.textColor = _color;
}
- (void)cancelTimer
{
[timer invalidate];
}
- (void)stopTimer
{
[timer invalidate];
if (completedBlock != nil) {
completedBlock();
}
}
- (void)updateTimerButton:(NSTimer *)timer
{
if (_reverse)
{
currentTime -= TIMER_STEP;
currentAngle = (currentTime/timerLimit) * 360 + START_DEGREE_OFFSET;
if(currentTime <= 0) {
[self stopTimer];
}
}
else {
currentTime += TIMER_STEP;
currentAngle = (currentTime/timerLimit) * 360 + START_DEGREE_OFFSET;
if(currentAngle >= (360 + START_DEGREE_OFFSET)) {
[self stopTimer];
}
}
[self setNeedsDisplay];
}
@end