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Telegram/Telegraph/TGCheckButtonView.m
2016-02-25 01:03:51 +01:00

371 lines
13 KiB
Objective-C

#import "TGCheckButtonView.h"
#import "TGColor.h"
@interface TGCheckButtonView ()
{
UIView *_wrapperView;
CALayer *_checkBackground;
TGCheckButtonStyle _style;
CGSize _size;
bool _borderOnTop;
UIImage *_fillImage;
UIView *_checkView;
UIImageView *_checkFillView;
UIView *_checkShortFragment;
UIView *_checkLongFragment;
}
@end
@implementation TGCheckButtonView
static CGAffineTransform TGCheckButtonDefaultTransform;
- (instancetype)initWithStyle:(TGCheckButtonStyle)style
{
CGSize size = CGSizeMake(32.0f, 32.0f);
if (style == TGCheckButtonStyleGallery)
size = CGSizeMake(42.0f, 42.0f);
self = [super initWithFrame:CGRectMake(0, 0, size.width, size.height)];
if (self != nil)
{
static dispatch_once_t onceToken;
static NSMutableDictionary *backgroundImages;
static NSMutableDictionary *fillImages;
dispatch_once(&onceToken, ^
{
TGCheckButtonDefaultTransform = CGAffineTransformMakeRotation(-M_PI_4);
backgroundImages = [[NSMutableDictionary alloc] init];
fillImages = [[NSMutableDictionary alloc] init];
});
bool borderOnTop = false;
CGFloat insideInset = 0.0f;
switch (style)
{
case TGCheckButtonStyleGallery:
{
insideInset = 3.5f;
borderOnTop = true;
}
case TGCheckButtonStyleMedia:
{
insideInset = 4.0f;
borderOnTop = true;
}
break;
case TGCheckButtonStyleBar:
{
insideInset = 2.0f;
}
break;
default:
{
insideInset = 5.0f;
}
break;
}
UIImage *backgroundImage = backgroundImages[@(style)];
if (backgroundImage == nil)
{
switch (style)
{
case TGCheckButtonStyleGallery:
{
CGRect rect = CGRectMake(0, 0, size.width, size.height);
UIGraphicsBeginImageContextWithOptions(rect.size, false, 0);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetShadowWithColor(context, CGSizeZero, 2.5f, [UIColor colorWithWhite:0.0f alpha:0.22f].CGColor);
CGContextSetLineWidth(context, 1.5f);
CGContextSetStrokeColorWithColor(context, [UIColor whiteColor].CGColor);
CGContextStrokeEllipseInRect(context, CGRectInset(rect, insideInset + 0.5f, insideInset + 0.5f));
backgroundImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
}
break;
case TGCheckButtonStyleMedia:
{
CGRect rect = CGRectMake(0, 0, size.width, size.height);
UIGraphicsBeginImageContextWithOptions(rect.size, false, 0);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetShadowWithColor(context, CGSizeZero, 2.5f, [UIColor colorWithWhite:0.0f alpha:0.22f].CGColor);
CGContextSetLineWidth(context, 1.5f);
CGContextSetStrokeColorWithColor(context, [UIColor whiteColor].CGColor);
CGContextStrokeEllipseInRect(context, CGRectInset(rect, insideInset + 0.5f, insideInset + 0.5f));
backgroundImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
}
break;
case TGCheckButtonStyleBar:
{
CGRect rect = CGRectMake(0, 0, size.width, size.height);
UIGraphicsBeginImageContextWithOptions(rect.size, false, 0);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetLineWidth(context, 1.0f);
CGContextSetStrokeColorWithColor(context, TGColorWithHex(0xcacacf).CGColor);
CGContextStrokeEllipseInRect(context, CGRectInset(rect, insideInset + 0.5f, insideInset + 0.5f));
backgroundImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
}
break;
default:
{
CGRect rect = CGRectMake(0, 0, size.width, size.height);
UIGraphicsBeginImageContextWithOptions(rect.size, false, 0);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetLineWidth(context, 1.0f);
CGContextSetStrokeColorWithColor(context, TGColorWithHex(0xcacacf).CGColor);
CGContextStrokeEllipseInRect(context, CGRectInset(rect, insideInset + 0.5f, insideInset + 0.5f));
backgroundImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
}
break;
}
backgroundImages[@(style)] = backgroundImage;
}
UIImage *fillImage = fillImages[@(style)];
if (fillImage == nil)
{
CGRect rect = CGRectMake(0, 0, size.width, size.height);
UIGraphicsBeginImageContextWithOptions(rect.size, false, 0);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, TGColorWithHex(0x29c519).CGColor);
CGContextFillEllipseInRect(context, CGRectInset(rect, insideInset, insideInset));
fillImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
fillImages[@(style)] = fillImage;
}
_style = style;
_size = size;
_borderOnTop = borderOnTop;
_fillImage = fillImage;
_wrapperView = [[UIView alloc] initWithFrame:self.bounds];
_wrapperView.userInteractionEnabled = false;
[self addSubview:_wrapperView];
_checkBackground = [[CALayer alloc] init];
_checkBackground.contents = (__bridge id)(backgroundImage.CGImage);
_checkBackground.frame = CGRectMake(0.0f, 0.0f, size.width, size.height);
[_wrapperView.layer addSublayer:_checkBackground];
}
return self;
}
- (void)_createCheckButtonDetailsIfNeeded
{
if (_checkFillView != nil)
return;
if (_borderOnTop)
[_checkBackground removeFromSuperlayer];
_checkFillView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, _size.width, _size.height)];
_checkFillView.alpha = 0.0f;
_checkFillView.image = _fillImage;
_checkFillView.transform = CGAffineTransformMakeScale(0.01f, 0.01f);
[_wrapperView addSubview:_checkFillView];
_checkView = [[UIView alloc] initWithFrame:CGRectInset(self.bounds, 4, 4)];
_checkView.alpha = 0.0f;
_checkView.userInteractionEnabled = false;
_checkView.transform = TGCheckButtonDefaultTransform;
[_wrapperView addSubview:_checkView];
CGRect shortFragmentFrame = CGRectMake(6.5f, 8.5f, 1.5f, 6.0f);
CGRect longFragmentFrame = CGRectMake(7.5f, 13.0f, 11.0f, 1.5f);
if (_style == TGCheckButtonStyleGallery)
{
shortFragmentFrame = CGRectMake(9.0f, 12.5f, 2.0f, 8.0f);
longFragmentFrame = CGRectMake(9.5f, 18.5f, 17.0f, 2.0f);
}
_checkShortFragment = [[UIView alloc] init];
_checkShortFragment.backgroundColor = [UIColor whiteColor];
_checkShortFragment.layer.anchorPoint = CGPointMake(0.5f, 0);
_checkShortFragment.frame = shortFragmentFrame;
_checkShortFragment.transform = CGAffineTransformMakeScale(1.0f, 0.0f);
[_checkView addSubview:_checkShortFragment];
_checkLongFragment = [[UIView alloc] init];
_checkLongFragment.backgroundColor = [UIColor whiteColor];
_checkLongFragment.layer.anchorPoint = CGPointMake(0, 0.5f);
_checkLongFragment.frame = longFragmentFrame;
_checkLongFragment.transform = CGAffineTransformMakeScale(0.0f, 1.0f);
[_checkView addSubview:_checkLongFragment];
if (_borderOnTop)
[_wrapperView.layer addSublayer:_checkBackground];
}
- (void)setSelected:(bool)selected animated:(bool)animated
{
[self setSelected:selected animated:animated bump:false];
}
- (void)setSelected:(bool)selected animated:(bool)animated bump:(bool)bump
{
if (selected)
[self _createCheckButtonDetailsIfNeeded];
if (animated && bump)
[self setWrapperScale:selected ? 0.77f : 0.87f animated:false];
static dispatch_once_t onceToken;
static bool inhibitAnimation = false;
dispatch_once(&onceToken, ^
{
inhibitAnimation = ([[[UIDevice currentDevice] systemVersion] compare:@"7" options:NSNumericSearch] == NSOrderedAscending);
});
if (inhibitAnimation)
animated = false;
if (animated)
{
if (self.selected == selected)
return;
if (bump)
{
if (selected)
_checkFillView.transform = CGAffineTransformIdentity;
}
else
{
if (selected)
_checkFillView.transform = CGAffineTransformMakeScale(0.01f, 0.01f);
else
_checkFillView.transform = CGAffineTransformIdentity;
}
[UIView animateWithDuration:0.19f animations:^
{
_checkFillView.alpha = selected ? 1.0f : 0.0f;
if (!bump || !selected)
_checkFillView.transform = selected ? CGAffineTransformIdentity : CGAffineTransformMakeScale(0.01f, 0.01f);
}];
if (selected)
{
CGFloat duration = 0.4f;
CGFloat damping = 0.35f;
CGFloat initialVelocity = 0.8f;
if (bump)
{
duration = 0.5f;
damping = 0.4f;
initialVelocity = 0.6f;
}
[UIView animateWithDuration:duration delay:0.0f usingSpringWithDamping:damping initialSpringVelocity:initialVelocity options:UIViewAnimationOptionBeginFromCurrentState animations:^
{
_wrapperView.transform = CGAffineTransformIdentity;
} completion:nil];
_checkView.alpha = 1.0f;
_checkShortFragment.transform = CGAffineTransformMakeScale(1.0f, 0.0f);
_checkLongFragment.transform = CGAffineTransformMakeScale(0.0f, 1.0f);
[UIView animateKeyframesWithDuration:0.21f delay:0.0f options:kNilOptions animations:^
{
[UIView addKeyframeWithRelativeStartTime:0.0f relativeDuration:0.333f animations:^
{
_checkShortFragment.transform = CGAffineTransformIdentity;
}];
[UIView addKeyframeWithRelativeStartTime:0.333f relativeDuration:0.666f animations:^
{
_checkLongFragment.transform = CGAffineTransformIdentity;
}];
} completion:nil];
}
else
{
CGFloat duration = 0.17f;
if (bump)
duration = 0.15f;
[UIView animateWithDuration:duration animations:^
{
_checkView.transform = CGAffineTransformScale(_checkView.transform, 0.01f, 0.01f);
_checkView.alpha = 0.0f;
if (bump)
_wrapperView.transform = CGAffineTransformIdentity;
} completion:^(__unused BOOL finished)
{
_checkView.transform = TGCheckButtonDefaultTransform;
}];
}
}
else
{
_checkFillView.alpha = selected ? 1.0f : 0.0f;
_checkFillView.transform = selected ? CGAffineTransformIdentity : CGAffineTransformMakeScale(0.1f, 0.1f);
_checkView.alpha = selected ? 1.0f : 0.0f;
_checkView.transform = TGCheckButtonDefaultTransform;
_checkShortFragment.transform = CGAffineTransformIdentity;
_checkLongFragment.transform = CGAffineTransformIdentity;
}
super.selected = selected;
}
#pragma mark -
- (void)setWrapperScale:(CGFloat)scale animated:(bool)animated
{
void (^change)(void) = ^
{
_wrapperView.transform = CGAffineTransformMakeScale(scale, scale);
};
if (animated)
[UIView animateWithDuration:0.12 delay:0 options:UIViewAnimationOptionAllowAnimatedContent animations:change completion:nil];
else
change();
}
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
[super touchesBegan:touches withEvent:event];
[self setWrapperScale:0.85f animated:true];
}
- (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
[super touchesEnded:touches withEvent:event];
[self setWrapperScale:1.0f animated:true];
}
- (void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
[super touchesCancelled:touches withEvent:event];
[self setWrapperScale:1.0f animated:true];
}
@end