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MAConfirmButton.m
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MAConfirmButton.m
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//
// MAConfirmButton.m
//
// Created by Mike on 11-03-28.
// Copyright 2011 Mike Ahmarani. All rights reserved.
//
#import "MAConfirmButton.h"
#import "UIColor-Expanded.h"
#define kHeight 26.0
#define kPadding 20.0
#define kFontSize 14.0
@interface MAConfirmButton ()
@property (nonatomic, copy) NSString *title;
@property (nonatomic, copy) NSString *confirm;
@property (nonatomic, copy) NSString *disabled;
@property (nonatomic, retain) UIColor *tint;
- (void)toggle;
- (void)setupLayers;
- (void)cancel;
- (void)lighten;
- (void)darken;
@end
@implementation MAConfirmButton
@synthesize title, confirm, disabled, tint, toggleAnimation;
- (void)dealloc{
[title release];
[confirm release];
[disabled release];
[tint release];
[super dealloc];
}
+ (MAConfirmButton *)buttonWithTitle:(NSString *)titleString confirm:(NSString *)confirmString{
MAConfirmButton *button = [[[super alloc] initWithTitle:titleString confirm:confirmString] autorelease];
return button;
}
+ (MAConfirmButton *)buttonWithDisabledTitle:(NSString *)disabledString{
MAConfirmButton *button = [[[super alloc] initWithDisabledTitle:disabledString] autorelease];
return button;
}
- (id)initWithDisabledTitle:(NSString *)disabledString{
self = [super initWithFrame:CGRectZero];
if(self != nil){
disabled = [disabledString retain];
toggleAnimation = MAConfirmButtonToggleAnimationLeft;
self.layer.needsDisplayOnBoundsChange = YES;
CGSize size = [disabled sizeWithFont:[UIFont boldSystemFontOfSize:kFontSize]];
CGRect r = self.frame;
r.size.height = kHeight;
r.size.width = size.width+kPadding;
self.frame = r;
[self setTitle:disabled forState:UIControlStateNormal];
[self setTitleColor:[UIColor colorWithWhite:0.6 alpha:1] forState:UIControlStateNormal];
[self setTitleShadowColor:[UIColor colorWithWhite:1 alpha:1] forState:UIControlStateNormal];
self.titleLabel.textAlignment = UITextAlignmentCenter;
self.titleLabel.shadowOffset = CGSizeMake(0, 1);
self.titleLabel.backgroundColor = [UIColor clearColor];
self.titleLabel.font = [UIFont boldSystemFontOfSize:kFontSize];
self.tint = [UIColor colorWithWhite:0.85 alpha:1];
[self setupLayers];
}
return self;
}
- (id)initWithTitle:(NSString *)titleString confirm:(NSString *)confirmString{
self = [super initWithFrame:CGRectZero];
if(self != nil){
self.title = [titleString retain];
self.confirm = [confirmString retain];
toggleAnimation = MAConfirmButtonToggleAnimationLeft;
self.layer.needsDisplayOnBoundsChange = YES;
CGSize size = [title sizeWithFont:[UIFont boldSystemFontOfSize:kFontSize]];
CGRect r = self.frame;
r.size.height = kHeight;
r.size.width = size.width+kPadding;
self.frame = r;
[self setTitle:title forState:UIControlStateNormal];
[self setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[self setTitleShadowColor:[UIColor colorWithWhite:0 alpha:0.5] forState:UIControlStateNormal];
self.titleLabel.textAlignment = UITextAlignmentCenter;
self.titleLabel.shadowOffset = CGSizeMake(0, -1);
self.titleLabel.backgroundColor = [UIColor clearColor];
self.titleLabel.font = [UIFont boldSystemFontOfSize:kFontSize];
self.tint = [UIColor colorWithRed:0.220 green:0.357 blue:0.608 alpha:1];
[self setupLayers];
}
return self;
}
- (void)toggle{
if(self.userInteractionEnabled){
self.userInteractionEnabled = NO;
self.titleLabel.alpha = 0;
CGSize size;
if(disabled){
[self setTitle:disabled forState:UIControlStateNormal];
[self setTitleColor:[UIColor colorWithWhite:0.6 alpha:1] forState:UIControlStateNormal];
[self setTitleShadowColor:[UIColor colorWithWhite:1 alpha:1] forState:UIControlStateNormal];
self.titleLabel.shadowOffset = CGSizeMake(0, 1);
size = [disabled sizeWithFont:[UIFont boldSystemFontOfSize:kFontSize]];
}else if(selected){
[self setTitle:confirm forState:UIControlStateNormal];
size = [confirm sizeWithFont:[UIFont boldSystemFontOfSize:kFontSize]];
}else{
[self setTitle:title forState:UIControlStateNormal];
size = [title sizeWithFont:[UIFont boldSystemFontOfSize:kFontSize]];
}
size.width += kPadding;
float offset = size.width - self.frame.size.width;
[CATransaction begin];
[CATransaction setAnimationDuration:0.25];
[CATransaction setCompletionBlock:^{
//Readjust button frame for new touch area, move layers back now that animation is done
CGRect frameRect = self.frame;
switch(self.toggleAnimation){
case MAConfirmButtonToggleAnimationLeft:
frameRect.origin.x = frameRect.origin.x - offset;
break;
case MAConfirmButtonToggleAnimationRight:
break;
case MAConfirmButtonToggleAnimationCenter:
frameRect.origin.x = frameRect.origin.x - offset/2.0;
break;
default:
break;
}
frameRect.size.width = frameRect.size.width + offset;
self.frame = frameRect;
[CATransaction setDisableActions:YES];
[CATransaction setCompletionBlock:^{
self.userInteractionEnabled = YES;
}];
for(CALayer *layer in self.layer.sublayers){
CGRect rect = layer.frame;
switch(self.toggleAnimation){
case MAConfirmButtonToggleAnimationLeft:
rect.origin.x = rect.origin.x+offset;
break;
case MAConfirmButtonToggleAnimationRight:
break;
case MAConfirmButtonToggleAnimationCenter:
rect.origin.x = rect.origin.x+offset/2.0;
break;
default:
break;
}
layer.frame = rect;
}
[CATransaction commit];
self.titleLabel.alpha = 1;
[self setNeedsLayout];
}];
UIColor *greenColor = [UIColor colorWithRed:0.439 green:0.741 blue:0.314 alpha:1.];
//Animate color change
CABasicAnimation *colorAnimation = [CABasicAnimation animationWithKeyPath:@"backgroundColor"];
colorAnimation.removedOnCompletion = NO;
colorAnimation.fillMode = kCAFillModeForwards;
if(disabled){
colorAnimation.fromValue = (id)greenColor.CGColor;
colorAnimation.toValue = (id)[UIColor colorWithWhite:0.85 alpha:1].CGColor;
}else{
colorAnimation.fromValue = selected ? (id)tint.CGColor : (id)greenColor.CGColor;
colorAnimation.toValue = selected ? (id)greenColor.CGColor : (id)tint.CGColor;
}
[colorLayer addAnimation:colorAnimation forKey:@"colorAnimation"];
//Animate layer scaling
for(CALayer *layer in self.layer.sublayers){
CGRect rect = layer.frame;
switch(self.toggleAnimation){
case MAConfirmButtonToggleAnimationLeft:
rect.origin.x = rect.origin.x-offset;
break;
case MAConfirmButtonToggleAnimationRight:
break;
case MAConfirmButtonToggleAnimationCenter:
rect.origin.x = rect.origin.x-offset/2.0;
break;
default:
break;
}
rect.size.width = rect.size.width+offset;
layer.frame = rect;
}
[CATransaction commit];
[self setNeedsDisplay];
}
}
- (void)setupLayers{
CAGradientLayer *bevelLayer = [CAGradientLayer layer];
bevelLayer.frame = CGRectMake(0, 0, CGRectGetWidth(self.frame), CGRectGetHeight(self.frame));
bevelLayer.colors = [NSArray arrayWithObjects:(id)[UIColor colorWithWhite:0 alpha:0.5].CGColor, [UIColor whiteColor].CGColor, nil];
bevelLayer.cornerRadius = 4.0;
bevelLayer.needsDisplayOnBoundsChange = YES;
colorLayer = [CALayer layer];
colorLayer.frame = CGRectMake(0, 1, CGRectGetWidth(self.frame), CGRectGetHeight(self.frame)-2);
colorLayer.borderColor = [UIColor colorWithWhite:0 alpha:0.1].CGColor;
colorLayer.backgroundColor = tint.CGColor;
colorLayer.borderWidth = 1.0;
colorLayer.cornerRadius = 4.0;
colorLayer.needsDisplayOnBoundsChange = YES;
CAGradientLayer *colorGradient = [CAGradientLayer layer];
colorGradient.frame = CGRectMake(0, 1, CGRectGetWidth(self.frame), CGRectGetHeight(self.frame)-2);
colorGradient.colors = [NSArray arrayWithObjects:(id)[UIColor colorWithWhite:1 alpha:0.1].CGColor, [UIColor colorWithWhite:0.2 alpha:0.1].CGColor , nil];
colorGradient.locations = [NSArray arrayWithObjects:[NSNumber numberWithFloat:0.0], [NSNumber numberWithFloat:1.0], nil];
colorGradient.cornerRadius = 4.0;
colorGradient.needsDisplayOnBoundsChange = YES;
[self.layer addSublayer:bevelLayer];
[self.layer addSublayer:colorLayer];
[self.layer addSublayer:colorGradient];
[self bringSubviewToFront:self.titleLabel];
}
- (void)setSelected:(BOOL)s{
selected = s;
[self toggle];
}
- (void)disableWithTitle:(NSString *)disabledString{
self.disabled = [disabledString retain];
[self toggle];
}
- (void)setAnchor:(CGPoint)anchor{
//Top-right point of the view (MUST BE SET LAST)
CGRect rect = self.frame;
rect.origin = CGPointMake(anchor.x - rect.size.width, anchor.y);
self.frame = rect;
}
- (void)setTintColor:(UIColor *)color{
self.tint = [UIColor colorWithHue:color.hue saturation:color.saturation+0.15 brightness:color.brightness alpha:1];
colorLayer.backgroundColor = tint.CGColor;
[self setNeedsDisplay];
}
- (void)darken{
darkenLayer = [CALayer layer];
darkenLayer.frame = CGRectMake(0, 0, CGRectGetWidth(self.frame), CGRectGetHeight(self.frame));
darkenLayer.backgroundColor = [UIColor colorWithWhite:0 alpha:0.2].CGColor;
darkenLayer.cornerRadius = 4.0;
darkenLayer.needsDisplayOnBoundsChange = YES;
[self.layer addSublayer:darkenLayer];
}
- (void)lighten{
if(darkenLayer){
[darkenLayer removeFromSuperlayer];
darkenLayer = nil;
}
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
if(!disabled && !confirmed && self.userInteractionEnabled){
[self darken];
}
[super touchesBegan:touches withEvent:event];
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
if(!disabled && !confirmed && self.userInteractionEnabled){
if(!CGRectContainsPoint(self.frame, [[touches anyObject] locationInView:self.superview])){ //TouchUpOutside (Cancelled Touch)
[self lighten];
[super touchesCancelled:touches withEvent:event];
}else if(selected){
[self lighten];
confirmed = YES;
[cancelOverlay removeFromSuperview];
cancelOverlay = nil;
[super touchesEnded:touches withEvent:event];
}else{
[self lighten];
self.selected = YES;
if(!cancelOverlay){
cancelOverlay = [UIButton buttonWithType:UIButtonTypeCustom];
[cancelOverlay setFrame:CGRectMake(0, 0, 1024, 1024)];
[cancelOverlay addTarget:self action:@selector(cancel) forControlEvents:UIControlEventTouchDown];
[self.superview addSubview:cancelOverlay];
}
[self.superview bringSubviewToFront:self];
}
}
}
- (void)cancel{
if(cancelOverlay && self.userInteractionEnabled){
[cancelOverlay removeFromSuperview];
cancelOverlay = nil;
}
self.selected = NO;
}
@end