//

// AOTutorialViewController.m

// BabyPlanner

//

// Created by Loïc GRIFFIE on 11/10/2013.

// Copyright (c) 2013 Appsido. All rights reserved.

//

#import "AOTutorialViewController.h"

#define headerLeftMargin 20.0f

#define headerFontSize 15.0f

#define headerFontType @"Helvetica"

#define headerColor [UIColor whiteColor]

#define labelLeftMargin 40.0f

#define labelFontSize 12.0f

#define labelFontType @"Helvetica-Light"

#define labelColor [UIColor whiteColor]

#define buttonColorTop @"#FFFFFF"

#define buttonColorBottom @"#D5D5D5"

#define loginLabelColor @"#000000"

#define signupLabelColor @"#B80000"

#define dismissLabelColor @"#000000"

@interface UIColor (AOAdditions)

/**

* Generate UIColor with given Hexadecimal color such as 0x123456

*

* @param UInt32 The hexadecimal color

* @return UIColor translation

*/

+ (UIColor *)colorWithHex:(UInt32)col;

/**

* Generate UIColor with given Hexadecimal color string representationsuch as #123456

*

* @param NSString The hexadecimal color

* @return UIColor translation

*/

+ (UIColor *)colorWithHexString:(NSString *)str;

@end

@implementation UIColor (AOAdditions)

+ (UIColor *)colorWithHexString:(NSString *)str {

const char *cStr = [str cStringUsingEncoding:NSASCIIStringEncoding];

long x = strtol(cStr+1, NULL, 16);

return [UIColor colorWithHex:(int)x];

}

+ (UIColor *)colorWithHex:(UInt32)col {

unsigned char r, g, b;

b = col & 0xFF;

g = (col >> 8) & 0xFF;

r = (col >> 16) & 0xFF;

return [UIColor colorWithRed:(float)r/255.0f green:(float)g/255.0f blue:(float)b/255.0f alpha:1];

}

@end

@interface AOButton : UIButton

@end

@implementation AOButton

- (void)drawRect:(CGRect)rect

{

CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();

CGContextRef context = UIGraphicsGetCurrentContext();

NSArray *gradientColors = @[(id)[[UIColor colorWithHexString:buttonColorTop] CGColor], (id)[[UIColor colorWithHexString:buttonColorBottom] CGColor]];

CGFloat gradientLocations[] = {0, 1};

CGGradientRef gradient = CGGradientCreateWithColors(colorSpace, (__bridge CFArrayRef)gradientColors, gradientLocations);

UIBezierPath *roundedRectanglePath = [UIBezierPath bezierPathWithRoundedRect:rect cornerRadius:5];

CGContextSaveGState(context);

[roundedRectanglePath addClip];

CGContextDrawLinearGradient(context, gradient, CGPointMake(rect.size.width/2, 0), CGPointMake(rect.size.width/2, rect.size.height), 0);

CGContextRestoreGState(context);

CGGradientRelease(gradient);

CGColorSpaceRelease(colorSpace);

}

@end

@interface AOTutorialViewController ()

{

NSUInteger _index;

}

@property (strong, nonatomic) NSMutableArray *backgroundImages;

@property (strong, nonatomic) NSMutableArray *informationLabels;

@property (weak, nonatomic) IBOutlet UIImageView *backgroundBottomImage;

@property (weak, nonatomic) IBOutlet UIImageView *backgroundTopImage;

@property (weak, nonatomic) IBOutlet UIScrollView *scrollview;

@property (weak, nonatomic) IBOutlet UIPageControl *pageController;

@property (weak, nonatomic) IBOutlet UIImageView *logo;

@property (weak, nonatomic) IBOutlet AOButton *signupButton;

@property (weak, nonatomic) IBOutlet AOButton *loginButton;

@property (weak, nonatomic) IBOutlet AOButton *dismissButton;

@end

@implementation AOTutorialViewController

#pragma mark - Helper function

CGSize ACMStringSize(NSString *string, CGSize size, NSDictionary *attributes)

{

NSTextStorage *textStorage = [[NSTextStorage alloc] initWithString:string];

[textStorage setAttributes:attributes range:NSMakeRange(0, [textStorage length])];

NSLayoutManager *layoutManager = [[NSLayoutManager alloc] init];

NSTextContainer *textContainer = [[NSTextContainer alloc] initWithSize:size];

textContainer.lineFragmentPadding = 0;

[layoutManager addTextContainer:textContainer];

[textStorage addLayoutManager:layoutManager];

return [layoutManager usedRectForTextContainer:textContainer].size;

}

#pragma mark - Life cycle methods

- (instancetype)initWithBackgroundImages:(NSArray *)images andInformations:(NSArray *)informations

{

self = [self initWithNibName:@"AOTutorialViewController" bundle:nil];

if (self)

{

self.backgroundImages = [NSMutableArray arrayWithArray:images];

self.informationLabels = [NSMutableArray arrayWithArray:informations];

}

return self;

}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

{

self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

if (self)

{

_index = 0;

_buttons = AOTutorialButtonNone;

self.backgroundImages = [NSMutableArray array];

self.informationLabels = [NSMutableArray array];

}

return self;

}

- (void)viewDidLoad

{

[super viewDidLoad];

if (self.header)

{

[self.logo setHidden:NO];

[self.logo setImage:self.header];

}

[self.pageController setNumberOfPages:[self.backgroundImages count]];

[self.scrollview setContentSize:CGSizeMake(self.scrollview.frame.size.width * [self.backgroundImages count], self.scrollview.frame.size.height)];

[self layoutViews];

}

- (void)didReceiveMemoryWarning

{

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

- (void)addButton

{

[self.loginButton setTitleColor:[UIColor colorWithHexString:loginLabelColor] forState:UIControlStateNormal];

[self.signupButton setTitleColor:[UIColor colorWithHexString:signupLabelColor] forState:UIControlStateNormal];

[self.dismissButton setTitleColor:[UIColor colorWithHexString:dismissLabelColor] forState:UIControlStateNormal];

[self.dismissButton setHidden:YES];

switch (self.buttons) {

case AOTutorialButtonSignup:

[self.signupButton setHidden:NO];

break;

case AOTutorialButtonLogin:

[self.loginButton setHidden:NO];

break;

case AOTutorialButtonSignup | AOTutorialButtonLogin:

[self.signupButton setHidden:NO];

[self.loginButton setHidden:NO];

break;

default:

[self.signupButton setHidden:YES];

[self.loginButton setHidden:YES];

[self.dismissButton setHidden:NO];

}

}

- (void)layoutViews

{

[self addButton];

[self addInformationsLabels];

[self resetBackgroundImageState];

[self.backgroundBottomImage setImage:[UIImage imageNamed:[self.backgroundImages objectAtIndex:_index+1]]];

}

- (void)addInformationsLabels

{

NSUInteger index = 0;

for (NSDictionary *labels in self.informationLabels)

{

CGSize hSize = ACMStringSize([labels valueForKey:@"Header"], CGSizeMake(([[UIScreen mainScreen] bounds].size.width - (headerLeftMargin * 2)), 60.0f), [self headerTextStyleAttributes]);

CGSize lSize = ACMStringSize([labels valueForKey:@"Label"], CGSizeMake(([[UIScreen mainScreen] bounds].size.width - (labelLeftMargin * 2)), 60.0f), [self labelTextStyleAttributes]);

NSLog(@"Frame > %@", NSStringFromCGRect(self.scrollview.frame));

UILabel *header = [[UILabel alloc] initWithFrame:CGRectMake(0.0f + ([[UIScreen mainScreen] bounds].size.width * index) + headerLeftMargin, [[UIScreen mainScreen] bounds].size.height - 120.0f - lSize.height, ([[UIScreen mainScreen] bounds].size.width - (headerLeftMargin * 2)), hSize.height + 5.0f)];

[header setNumberOfLines:1];

[header setLineBreakMode:NSLineBreakByTruncatingTail];

[header setShadowOffset:CGSizeMake(1, 1)];

[header setShadowColor:[UIColor blackColor]];

[header setText:[labels valueForKey:@"Header"]];

[header setTextAlignment:NSTextAlignmentCenter];

[header setBackgroundColor:[UIColor clearColor]];

[header setTextColor:headerColor];

[header setFont:[UIFont fontWithName:headerFontType size:headerFontSize]];

[self.scrollview addSubview:header];

UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0.0f + ([[UIScreen mainScreen] bounds].size.width * index) + labelLeftMargin, header.frame.origin.y + hSize.height + 5.0f, ([[UIScreen mainScreen] bounds].size.width - (labelLeftMargin * 2)), lSize.height)];

[label setNumberOfLines:0];

[label setLineBreakMode:NSLineBreakByWordWrapping];

[label setShadowOffset:CGSizeMake(1, 1)];

[label setShadowColor:[UIColor blackColor]];

[label setText:[labels valueForKey:@"Label"]];

[label setTextAlignment:NSTextAlignmentCenter];

[label setBackgroundColor:[UIColor clearColor]];

[label setTextColor:labelColor];

[label setFont:[UIFont fontWithName:labelFontType size:labelFontSize]];

[self.scrollview addSubview:label];

index++;

}

}

- (void)resetBackgroundImageState

{

[self.backgroundTopImage setImage:[UIImage imageNamed:[self.backgroundImages objectAtIndex:_index]]];

[self.backgroundTopImage setAlpha:1.0];

[self.backgroundBottomImage setAlpha:0.0];

}

- (void)setHeaderImage:(UIImage *)logo

{

[self setHeader:logo];

}

#pragma mark - Labels methods

- (NSDictionary *)headerTextStyleAttributes

{

NSMutableParagraphStyle *style = [[NSMutableParagraphStyle alloc] init];

[style setAlignment:NSTextAlignmentCenter];

[style setLineSpacing:5.0f];

[style setLineBreakMode:NSLineBreakByTruncatingTail];

NSShadow *shadow = [[NSShadow alloc] init];

shadow.shadowColor = [UIColor blackColor];

shadow.shadowBlurRadius = 0.0;

shadow.shadowOffset = CGSizeMake(1.0, 1.0);

return @{NSFontAttributeName:[UIFont fontWithName:headerFontType size:headerFontSize], NSForegroundColorAttributeName:headerColor, NSParagraphStyleAttributeName:style, NSShadowAttributeName:shadow};

}

- (NSDictionary *)labelTextStyleAttributes

{

NSMutableParagraphStyle *style = [[NSMutableParagraphStyle alloc] init];

[style setAlignment:NSTextAlignmentCenter];

[style setLineSpacing:5.0f];

[style setLineBreakMode:NSLineBreakByWordWrapping];

NSShadow *shadow = [[NSShadow alloc] init];

shadow.shadowColor = [UIColor blackColor];

shadow.shadowBlurRadius = 0.0;

shadow.shadowOffset = CGSizeMake(1.0, 1.0);

return @{NSFontAttributeName:[UIFont fontWithName:labelFontType size:labelFontSize], NSForegroundColorAttributeName:labelColor, NSParagraphStyleAttributeName:style, NSShadowAttributeName:shadow};

}

#pragma mark - User interface methods

- (IBAction)signup:(id)sender

{

}

- (IBAction)login:(id)sender

{

}

- (IBAction)dismiss:(id)sender

{

}

#pragma mark - Scrollview delegate methods

- (void)scrollViewDidScroll:(UIScrollView *)scrollView

{

CGFloat alpha = [scrollView contentOffset].x / [[UIScreen mainScreen] bounds].size.width - _index;

NSInteger newIndex = (alpha < 0 ? _index-1 : _index+1);

UIImage *nextImage = [UIImage imageNamed:[self.backgroundImages objectAtIndex:(newIndex < 0 ? 0 : (newIndex >= [self.backgroundImages count] ? [self.backgroundImages count]-1 : newIndex))]];

if (![[self.backgroundBottomImage image] isEqual:nextImage]) [self.backgroundBottomImage setImage:nextImage];

[self.backgroundTopImage setAlpha:1-fabs(alpha)];

[self.backgroundBottomImage setAlpha:fabs(alpha)];

}

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView

{

CGFloat pageWidth = self.scrollview.frame.size.width;

_index = floor((self.scrollview.contentOffset.x - pageWidth / 2) / pageWidth) + 1;

[self.pageController setCurrentPage:_index];

[self resetBackgroundImageState];

}

@end