mirror of
https://github.com/zhigang1992/ZGParallelView.git
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123 lines
3.7 KiB
Objective-C
123 lines
3.7 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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//[self.tableView addParallelViewWithUIView:self.awesomeZG];
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[self.tableView addParallelViewWithUIView:self.awesomeZG withDisplayRadio:0.8 headerViewStyle:ZGScrollViewStyleCutOffAtMax];
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}
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- (IBAction)SwitchParallelViewStyle:(UISegmentedControl *)sender {
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ZGScrollViewStyle PVStyle = nil;
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switch (sender.selectedSegmentIndex) {
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case 0:
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PVStyle = ZGScrollViewStyleDefault;
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break;
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case 1:
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PVStyle = ZGScrollViewStyleCutOffAtMax;
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break;
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case 2:
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PVStyle = ZGScrollViewStyleStickToTheTop;
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break;
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default:
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break;
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}
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[self.tableView addParallelViewWithUIView:self.awesomeZG withDisplayRadio:0.8 headerViewStyle:PVStyle];
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}
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- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
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if (scrollView == self.tableView) {
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[self.tableView updateParallelViewWithOffset:scrollView.contentOffset];
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}
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if (scrollView == self.headerScrollView) {
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[self darkerTheBackground:scrollView.contentOffset.x];
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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)customizeUI{
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self.headerScrollView.contentSize = self.contontView.frame.size;
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self.headerScrollView.scrollsToTop = NO;
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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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