PWParallaxScrollView (ObjC / Swift)

PWParallaxScrollView is a library for creating sliding menus with parallax effect inspired by the WWF app

CocoaPods

for ObjC

pod 'PWParallaxScrollView', '~> 1.2.0'

for Swift,

pod 'PWParallaxScrollView/Swift', '~> 1.2.0'

Usage

import header

#import "PWParallaxScrollView.h"

follow PWParallaxScrollViewDataSource protocol

@interface ViewController <PWParallaxScrollViewDataSource>

implement PWParallaxScrollViewDataSource methods

- (NSInteger)numberOfItemsInScrollView:(PWParallaxScrollView *)scrollView;
- (UIView *)backgroundViewAtIndex:(NSInteger)index scrollView:(PWParallaxScrollView *)scrollView;
- (UIView *)foregroundViewAtIndex:(NSInteger)index scrollView:(PWParallaxScrollView *)scrollView;

setting ForegroundScreenEdgeInsets

About ForegroundScreenEdgeInsets

custom your parallax offset

foregroundScreenEdgeInsets = UIEdgeInsetsMake(0, 30, 0, 100);

sample code

    self.scrollView = [[PWParallaxScrollView alloc] initWithFrame:self.view.bounds];
    _scrollView.foregroundScreenEdgeInsets = UIEdgeInsetsMake(0, 30, 0, 100);
    [self.view insertSubview:_scrollView atIndex:0];
    

- (UIView *)foregroundViewAtIndex:(NSInteger)index scrollView:(PWParallaxScrollView *)scrollView
{
    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 30, 300, 70)];

	...
	    
    return label;
}

Normal

foregroundScreenEdgeInsets = UIEdgeInsetsZero;

sample code

    self.scrollView = [[PWParallaxScrollView alloc] initWithFrame:self.view.bounds];
    _scrollView.foregroundScreenEdgeInsets = UIEdgeInsetsZero;
    [self.view insertSubview:_scrollView atIndex:0];
    

- (UIView *)foregroundViewAtIndex:(NSInteger)index scrollView:(PWParallaxScrollView *)scrollView
{
    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 30, 300, 70)];

	...
	    
    return label;
}

hit test

- (UIView *)foregroundViewAtIndex:(NSInteger)index scrollView:(PWParallaxScrollView *)scrollView
{
    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 30, 300, 70)];
	...
    
    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
	...
    [button addTarget:self action:@selector(test) forControlEvents:UIControlEventTouchUpInside];
    ...
    [label addSubview:button];
    
    return label;
}

moveToIndex , prev , next

sample code

    [scrollView moveToIndex:3];

    [scrollView prevItem];

    [scrollView nextItem];

background view only

just not implement the foregroundViewAtIndex:scrollView: method (or return nil)

- (UIView *)foregroundViewAtIndex:(NSInteger)index scrollView:(PWParallaxScrollView *)scrollView;

Change Log 1.2.0

• add swift version

Thanks for contribution

• @yume190

Change Log 1.1.5

add delegate to receive touchScrollViewTapped event

- (void)parallaxScrollView:(PWParallaxScrollView *)scrollView didRecieveTapAtIndex:(NSInteger)index;

Thanks for contribution

• @Morgan-Kennedy

Change Log 1.1.0

• add interface builder support (initWithCoder, Outlets)

• add PWParallaxDelegate and provides methods to check whether the current index is changed

Thanks for contribution

• @matibot

MIT License

PWParallaxScrollView is released under the MIT License (see the License file)

Contact

Any suggestions or improvements?

feel free to contact me

wpsteak@gmail.com