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@MaximKeegan
Created April 24, 2012 11:15
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Fade edges UIScrollView
//
// FadeScrollView.h
// scroll_test
//
// Created by Maxim Keegan on 24.04.12.
// Copyright (c) 2012 East Media Ltd. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface FadeScrollView : UIScrollView
@end
//
// FadeScrollView.m
// scroll_test
//
// Created by Maxim Keegan on 24.04.12.
// Copyright (c) 2012 __MyCompanyName__. All rights reserved.
//
#import "FadeScrollView.h"
#import <QuartzCore/QuartzCore.h>
@implementation FadeScrollView
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
}
return self;
}
- (id) initWithCoder:(NSCoder *)aDecoder {
self = [super initWithCoder:aDecoder];
if (self) {
// Initialization code
}
return self;
}
- (void) layoutSubviews {
float fadeHeight = 50.0;
CALayer *l = [CALayer layer];
l.frame = self.bounds;
CAGradientLayer *l1 = [CAGradientLayer layer];
l1.frame = CGRectMake(self.contentOffset.x, -fadeHeight, self.bounds.size.width, fadeHeight);
l1.colors = [NSArray arrayWithObjects:(id)[UIColor clearColor].CGColor, (id)[UIColor whiteColor].CGColor, nil];
l1.endPoint = CGPointMake(0.1, 1.0);
l1.startPoint = CGPointMake(0.0, 0.0);
[l addSublayer:l1];
CAGradientLayer *l2 = [CAGradientLayer layer];
l2.frame = CGRectMake(self.contentOffset.x, self.bounds.size.height , self.bounds.size.width, fadeHeight);
l2.colors = [NSArray arrayWithObjects:(id)[UIColor whiteColor].CGColor, (id)[UIColor clearColor].CGColor, nil];
[l addSublayer:l2];
CALayer *l3 = [CALayer layer];
l3.backgroundColor = [UIColor whiteColor].CGColor;
l3.frame = CGRectMake(self.contentOffset.x, 0, self.bounds.size.width, self.bounds.size.height);
[l addSublayer:l3];
self.layer.mask = l;
}
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
// Drawing code
}
*/
@end
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