mirror of
https://github.com/zhigang1992/ZGParallelView.git
synced 2026-01-12 22:42:52 +08:00
114 lines
3.4 KiB
Objective-C
114 lines
3.4 KiB
Objective-C
//
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// DemoTableViewController.m
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// ZGParallelViewForTable
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//
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// Created by Kyle Fang on 1/7/13.
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// Copyright (c) 2013 kylefang. All rights reserved.
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//
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#import <QuartzCore/QuartzCore.h>
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#import "DemoTableViewController.h"
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#import "UITableView+ZGParallelView.h"
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@interface DemoTableViewController ()
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@property (strong, nonatomic) IBOutlet UIView *awesomeZG;
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@property (strong, nonatomic) IBOutlet UIScrollView *headerScrollView;
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@property (strong, nonatomic) IBOutlet UIPageControl *headerPageControl;
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@property (strong, nonatomic) IBOutlet UIView *contontView;
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@property (strong, nonatomic) IBOutlet UIImageView *avatar;
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@property (nonatomic) BOOL usedPageControl;
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@end
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@implementation DemoTableViewController
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- (void)viewDidLoad
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{
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[super viewDidLoad];
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[self customizeUI];
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#warning init with or without displayRadio. This is the first line of code
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//[self.tableView addParallelViewWithUIView:self.awesomeZG];
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[self.tableView addParallelViewWithUIView:self.awesomeZG withDisplayRadio:0.7];
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/** below is just a test for kvo remove, you can ignore it
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int64_t delayInSeconds = 5.0;
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dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, delayInSeconds * NSEC_PER_SEC);
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dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
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UIView *secondeView = [[UIView alloc] initWithFrame:self.awesomeZG.frame];
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secondeView.backgroundColor = [UIColor blueColor];
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[self.tableView addParallelViewWithUIView:secondeView];
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});
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*/
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}
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//=====================================================================
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//
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// Rest of the code is for demo purpose
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//
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//=====================================================================
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- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
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[self darkerTheBackground:scrollView.contentOffset.x];
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}
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- (void)customizeUI{
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self.headerScrollView.contentSize = self.contontView.frame.size;
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[self.avatar.layer setCornerRadius:5.f];
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[self.avatar.layer setMasksToBounds:YES];
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}
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- (void)darkerTheBackground:(CGFloat)xOffSet{
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if (xOffSet != 0) {
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CGFloat pageWidth = self.headerScrollView.frame.size.width;
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CGFloat alphaForContentView = xOffSet/pageWidth;
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if (alphaForContentView > 1.f) {
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alphaForContentView = 1.f;
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} else if (alphaForContentView < 0) {
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alphaForContentView = 0;
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}
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self.headerScrollView.backgroundColor = [UIColor colorWithWhite:0 alpha:0.7*alphaForContentView];
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if (!self.usedPageControl) {
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int page = floor((xOffSet - pageWidth / 2) / pageWidth) + 1;
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self.headerPageControl.currentPage = page;
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}
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}
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}
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- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{
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if (scrollView == self.headerScrollView) {
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self.usedPageControl = NO;
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}
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}
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- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{
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if (scrollView == self.headerScrollView) {
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self.usedPageControl = NO;
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}
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}
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- (IBAction)pageChanged:(UIPageControl *)sender {
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CGFloat headerViewWidth = self.headerScrollView.frame.size.width;
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CGRect frame = self.headerScrollView.frame;
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frame.origin = CGPointMake(headerViewWidth*sender.currentPage, 0);
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self.usedPageControl = YES;
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[self.headerScrollView scrollRectToVisible:frame animated:YES];
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}
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- (void)didReceiveMemoryWarning
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{
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[super didReceiveMemoryWarning];
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// Dispose of any resources that can be recreated.
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}
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@end
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