#import "HMCustomSwitch.h"


@implementation HMCustomSwitch

@synthesize on;
@synthesize tintColor, clippingView, leftLabel, rightLabel;

+(HMCustomSwitch *)switchWithLeftText:(NSString *)leftText andRight:(NSString *)rightText
{
     HMCustomSwitch *switchView = [[HMCustomSwitch alloc] initWithFrame:CGRectZero];
     
     switchView.leftLabel.text = leftText;
     switchView.rightLabel.text = rightText;
     
     return [switchView autorelease];
}

-(id)initWithFrame:(CGRect)rect
{
     if ((self=[super initWithFrame:CGRectMake(rect.origin.x,rect.origin.y,95,27)]))
     {
          //          self.clipsToBounds = YES;
          
          [self awakeFromNib];          // do all setup in awakeFromNib so that control can be created manually or in a nib file
     }
     return self;
}

-(void)awakeFromNib
{
     [super awakeFromNib];
     
     self.backgroundColor = [UIColor clearColor];

     [self setThumbImage:[UIImage imageNamed:@"switchThumb.png"] forState:UIControlStateNormal];
     [self setMinimumTrackImage:[UIImage imageNamed:@"switchBlueBg.png"] forState:UIControlStateNormal];
     [self setMaximumTrackImage:[UIImage imageNamed:@"switchOffPlain.png"] forState:UIControlStateNormal];
     
     self.minimumValue = 0;
     self.maximumValue = 1;
     self.continuous = NO;
     
     self.on = NO;
     self.value = 0.0;
     
     self.clippingView = [[UIView alloc] initWithFrame:CGRectMake(4,2,87,23)];
     self.clippingView.clipsToBounds = YES;
     self.clippingView.userInteractionEnabled = NO;
     self.clippingView.backgroundColor = [UIColor clearColor];
     [self addSubview:self.clippingView];
     [self.clippingView release];
     
     NSString *leftLabelText = NSLocalizedString(@"ON","Custom UISwitch ON label. If localized to empty string then I/O will be used");
     if ([leftLabelText length] == 0)     
     {
          leftLabelText = @"l";          // use helvetica lowercase L to be a 1. 
     }
     
     self.leftLabel = [[UILabel alloc] init];
     self.leftLabel.frame = CGRectMake(0, 0, 48, 23);
     self.leftLabel.text = leftLabelText;
     self.leftLabel.textAlignment = NSTextAlignmentCenter;
     self.leftLabel.font = [UIFont boldSystemFontOfSize:17];
     self.leftLabel.textColor = [UIColor whiteColor];
     self.leftLabel.backgroundColor = [UIColor clearColor];
     //          self.leftLabel.shadowColor = [UIColor redColor];
     //          self.leftLabel.shadowOffset = CGSizeMake(0,0);
     [self.clippingView addSubview:self.leftLabel];
     [self.leftLabel release];
     
     
     NSString *rightLabelText = NSLocalizedString(@"OFF","Custom UISwitch OFF label. If localized to empty string then I/O will be used");
     if ([rightLabelText length] == 0)     
     {
          rightLabelText = @"O";     // use helvetica uppercase o to be a 0. 
     }
     
     self.rightLabel = [[UILabel alloc] init];
     self.rightLabel.frame = CGRectMake(95, 0, 48, 23);
     self.rightLabel.text = rightLabelText;
     self.rightLabel.textAlignment = NSTextAlignmentCenter;
     self.rightLabel.font = [UIFont boldSystemFontOfSize:17];
     self.rightLabel.textColor = [UIColor grayColor];
     self.rightLabel.backgroundColor = [UIColor clearColor];
     //          self.rightLabel.shadowColor = [UIColor redColor];
     //          self.rightLabel.shadowOffset = CGSizeMake(0,0);
     [self.clippingView addSubview:self.rightLabel];
     [self.rightLabel release];
     
     
}

-(void)layoutSubviews
{
     [super layoutSubviews];
     
     //     NSLog(@"leftLabel=%@",NSStringFromCGRect(self.leftLabel.frame));
     
     // move the labels to the front
     [self.clippingView removeFromSuperview];
     [self addSubview:self.clippingView];
     
     CGFloat thumbWidth = self.currentThumbImage.size.width;
     CGFloat switchWidth = self.bounds.size.width;
     CGFloat labelWidth = switchWidth - thumbWidth;
     CGFloat inset = self.clippingView.frame.origin.x;
     
     //     NSInteger xPos = self.value * (self.bounds.size.width - thumbWidth) - (self.leftLabel.frame.size.width - thumbWidth/2); 
     NSInteger xPos = self.value * labelWidth - labelWidth - inset;
     self.leftLabel.frame = CGRectMake(xPos, 0, labelWidth, 23);
     
     //     xPos = self.value * (self.bounds.size.width - thumbWidth) + (self.rightLabel.frame.size.width - thumbWidth/2); 
     xPos = switchWidth + (self.value * labelWidth - labelWidth) - inset; 
     self.rightLabel.frame = CGRectMake(xPos, 0, labelWidth, 23);
     
     //     NSLog(@"value=%f    xPos=%i",self.value,xPos);
     //     NSLog(@"thumbWidth=%f    self.bounds.size.width=%f",thumbWidth,self.bounds.size.width);
}

- (UIImage *)image:(UIImage*)image tintedWithColor:(UIColor *)tint 
{     
     
    if (tint != nil) 
     {
          UIGraphicsBeginImageContext(image.size);
          
          //draw mask so the alpha is respected
          CGContextRef currentContext = UIGraphicsGetCurrentContext();
          CGImageRef maskImage = [image CGImage];
          CGContextClipToMask(currentContext, CGRectMake(0, 0, image.size.width, image.size.height), maskImage);
          CGContextDrawImage(currentContext, CGRectMake(0,0, image.size.width, image.size.height), image.CGImage);
          
          [image drawAtPoint:CGPointMake(0,0)];
          [tint setFill];
          UIRectFillUsingBlendMode(CGRectMake(0,0,image.size.width,image.size.height),kCGBlendModeColor);
          UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
          UIGraphicsEndImageContext();
          
        return newImage;
    }
    else 
     {
        return image;
    }
}



-(void)setTintColor:(UIColor*)color
{
     if (color != tintColor)
     {
          [tintColor release];
          tintColor = [color retain];
          
          [self setMinimumTrackImage:[self image:[UIImage imageNamed:@"switchBlueBg.png"] tintedWithColor:tintColor] forState:UIControlStateNormal];
     }
     
}

- (void)setOn:(BOOL)turnOn animated:(BOOL)animated;
{
     on = turnOn;
     
     if (animated)
     {
          [UIView     beginAnimations:nil context:nil];
          [UIView setAnimationDuration:0.2];
     }
     
     if (on)
     {
          self.value = 1.0;
     }
     else 
     {
          self.value = 0.0;
     }
     
     if (animated)
     {
          [UIView     commitAnimations];     
     }
}

- (void)setOn:(BOOL)turnOn
{
     [self setOn:turnOn animated:NO];
}


- (void)endTrackingWithTouch:(UITouch *)touch withEvent:(UIEvent *)event
{
     NSLog(@"preendTrackingWithtouch");
     [super endTrackingWithTouch:touch withEvent:event];
     NSLog(@"postendTrackingWithtouch");
     m_touchedSelf = YES;
     
     [self setOn:on animated:YES];
}

- (void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event
{
     [super touchesBegan:touches withEvent:event];
          NSLog(@"touchesBegan");
     m_touchedSelf = NO;
     on = !on;
}

- (void)touchesEnded:(NSSet*)touches withEvent:(UIEvent*)event
{
     [super touchesEnded:touches withEvent:event];
     NSLog(@"touchesEnded");
     
     if (!m_touchedSelf)
     {
          [self setOn:on animated:YES];
          [self sendActionsForControlEvents:UIControlEventValueChanged];
     }
}

-(void)dealloc
{
     [tintColor release];
     [clippingView release];
     [rightLabel release];
     [leftLabel release];
     
     [super dealloc];
}

@end