Initial commit

2017-08-15 16:59:01 +08:00
commit bdc83e07ef
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+//
+//  UMComGridViewerController.m
+//  UMCommunity
+//
+//  Created by luyiyuan on 14/9/2.
+//  Copyright (c) 2014年 luyiyuan. All rights reserved.
+//
+
+#import "UMComGridViewerController.h"
+#import "UMImageProgressView.h"
+#import "UMComShowToast.h"
+#import <UMComDataStorage/UMComImageUrl.h>
+
+typedef enum {
+    preImage = 0,
+    curImage = 1,
+    rearImage = 2,
+}ImageLocation;
+#define A_WEEK_SECONDES (60*60*24*7)
+
+@interface UMComGridViewerController ()
+@property (strong,nonatomic) UIPageControl *pageControl;
+@property (strong,nonatomic) UIScrollView *scrollView;
+@property (nonatomic,strong) NSArray *imageModels;
+@property (nonatomic,strong) NSMutableArray *arrayImageView;
+@property (nonatomic,strong) NSMutableArray *contentViews;
+@property (nonatomic,assign) NSInteger totalPageCount;
+@property (nonatomic,assign) NSInteger currentPageIndex;
+
+@end
+
+@implementation UMComGridViewerController
+{
+    BOOL fisrtime;
+}
+
+- (id)initWithArray:(NSArray *)array index:(NSUInteger)index
+{
+    self = [super init];
+    
+    if(self)
+    {
+        self.arrayImageView = [[NSMutableArray alloc] init];
+        self.scrollView = [[UIScrollView alloc] initWithFrame:self.view.bounds];
+        self.scrollView.pagingEnabled = YES;
+        self.scrollView.showsHorizontalScrollIndicator = NO;
+        self.scrollView.showsVerticalScrollIndicator = NO;
+        [self.scrollView setDelegate:self];
+        
+        for(int i=0;i<3; i++)
+        {
+            UMZoomScrollView *zoomScrollView = [[UMZoomScrollView alloc]initWithFrame:CGRectMake(i*self.view.bounds.size.width, 0, self.view.bounds.size.width, self.view.bounds.size.height)];
+            UMImageProgressView *iv = [[UMImageProgressView alloc] initWithFrame:CGRectMake(0, 0, zoomScrollView.frame.size.width, zoomScrollView.frame.size.height)];
+            iv.isAutoStart = NO;
+            [iv setTag:i];
+            [iv setCacheSecondes:A_WEEK_SECONDES];
+            zoomScrollView.imageView = iv;
+            [self.arrayImageView addObject:zoomScrollView];
+        }
+        
+        self.pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(0, self.view.bounds.size.height - 20, self.view.bounds.size.width, 20)];
+        [self.view addSubview:self.scrollView];
+        [self.view addSubview:self.pageControl];
+        self.view.backgroundColor = [UIColor blackColor];
+        
+        //添加触控
+        UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapImageView:)];
+        [self.view addGestureRecognizer:tapGesture];
+        [self setArray:array index:index];
+    }
+    return self;
+}
+
+- (void)setArray:(NSArray *)array index:(NSUInteger)index
+{
+    fisrtime = YES;
+    self.imageModels = array;
+
+    NSUInteger count = [array count];
+    if (count <= 9) {
+        [self.pageControl setNumberOfPages:count];
+        self.pageControl.currentPage = index;
+    }
+    self.currentPageIndex = index;
+    self.contentViews = [NSMutableArray arrayWithCapacity:3];
+    self.totalPageCount = count;
+    [self configContentView];
+}
+
+- (void)tapImageView:(UITapGestureRecognizer *)tapGesture
+{
+    [self dismissViewControllerAnimated:YES completion:^{
+        for (UMZoomScrollView *zoomView in self.arrayImageView) {
+            zoomView.zoomScale = 1.0;
+            zoomView.imageView.center = CGPointMake(zoomView.frame.size.width/2, zoomView.frame.size.height/2);
+        }
+    }];
+}
+
+//默认一周（60*60*24*7）
+- (void)setCacheSecondes:(NSTimeInterval)secondes
+{
+    for(UMZoomScrollView *iv in self.arrayImageView)
+    {
+        [iv setCacheSecondes:secondes];
+    }
+}
+
+
+- (void)viewDidLoad
+{
+    [super viewDidLoad];
+    // Do any additional setup after loading the view.
+}
+
+- (void)viewWillAppear:(BOOL)animated
+{
+    [super viewWillAppear:animated];
+    self.scrollView.delegate = self;
+}
+
+- (void)viewWillDisappear:(BOOL)animated
+{
+    [super viewWillDisappear:animated];
+    self.scrollView.delegate = nil;
+}
+
+- (void)didReceiveMemoryWarning
+{
+    [super didReceiveMemoryWarning];
+    // Dispose of any resources that can be recreated.
+}
+
+- (void)scrollViewDidScroll:(UIScrollView *)scrollView
+{
+    if (scrollView.contentOffset.x >= (2*CGRectGetWidth(scrollView.frame))) {
+        self.currentPageIndex = [self getValidNextPageIndexWithPageIndext:self.currentPageIndex+1];
+        [self configContentView];
+    }
+    if (scrollView.contentOffset.x <= 0) {
+        self.currentPageIndex = [self getValidNextPageIndexWithPageIndext:self.currentPageIndex-1];
+        [self configContentView];
+    }
+    self.pageControl.currentPage = self.currentPageIndex;
+}
+
+
+- (void)setTotalPageCount:(NSInteger)totalPageCount
+{
+    _totalPageCount = totalPageCount;
+    if (_totalPageCount > 0) {
+        if (_totalPageCount == 1) {
+            self.scrollView.contentSize = CGSizeMake(CGRectGetWidth(self.scrollView.frame), CGRectGetHeight(self.scrollView.frame));
+            self.scrollView.contentOffset = CGPointMake(0, 0);
+            self.scrollView.scrollEnabled = NO;
+        }else{
+            self.scrollView.contentSize = CGSizeMake(3*CGRectGetWidth(self.scrollView.frame), CGRectGetHeight(self.scrollView.frame));
+            self.scrollView.contentOffset = CGPointMake(self.scrollView.frame.size.width, 0);
+            self.scrollView.scrollEnabled = YES;
+        }
+        
+    }else{
+        [self.contentViews removeAllObjects];
+    }
+}
+
+- (void)configContentView
+{
+    [self.scrollView.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
+    [self setScrollViewContentDataSource];
+    NSInteger counter = 0;
+    for (UMZoomScrollView *contenView in self.contentViews) {
+        contenView.frame = CGRectMake(self.scrollView.frame.size.width *counter+((self.scrollView.frame.size.width - contenView.frame.size.width)/2), 0, contenView.frame.size.width, contenView.frame.size.height);
+        counter ++;
+        [contenView startDownload];
+        [self.scrollView addSubview:contenView];
+    }
+   [self.scrollView setContentOffset:CGPointMake(self.view.bounds.size.width, 0.0f) animated:NO];
+}
+
+- (UMZoomScrollView *)zoomScrollViewWithPageIndex:(NSInteger)pageIndex imageLocation:(ImageLocation)imageLocation
+{
+    //
+    if (self.imageModels.count > 0) {
+        UMZoomScrollView *zoomView = nil;
+        if (imageLocation == preImage) {
+            zoomView = self.arrayImageView[0];
+        }else if (imageLocation == curImage){
+            zoomView = self.arrayImageView[1];
+        }else{
+            zoomView = self.arrayImageView[2];
+        }
+        if (zoomView.zoomScale > 1) {
+            [zoomView setZoomScale:1 animated:NO];
+        }
+        if (self.imageModels.count > pageIndex) {
+            ;
+            UMComImageUrl *imageModel = self.imageModels[pageIndex];
+            zoomView.imageView.contentMode = UIViewContentModeScaleAspectFit;
+            [zoomView.imageView setImageURL:[NSURL URLWithString:imageModel.large_url_string]];
+            [zoomView.imageView setThumImageViewUrl:imageModel.small_url_string];
+        }
+        return zoomView;
+    }
+    return nil;
+}
+
+//获取将要加载图片
+- (void)setScrollViewContentDataSource
+{
+    [self.contentViews removeAllObjects];
+    @try {
+        NSInteger prePageIndex = [self getValidNextPageIndexWithPageIndext:self.currentPageIndex-1];
+        NSInteger rearPageIndex = [self getValidNextPageIndexWithPageIndext:self.currentPageIndex+1];
+        
+        UMZoomScrollView *resaultView = [self zoomScrollViewWithPageIndex:prePageIndex imageLocation:preImage];
+        if(resaultView){
+            [self.contentViews addObject:resaultView];
+        }
+        resaultView = [self zoomScrollViewWithPageIndex:self.currentPageIndex imageLocation:curImage];
+        if(resaultView){
+            [self.contentViews addObject:resaultView];
+        }
+        resaultView = [self zoomScrollViewWithPageIndex:rearPageIndex imageLocation:rearImage];
+        if(resaultView){
+            [self.contentViews addObject:resaultView];
+        }
+    }
+    @catch (NSException *exception) {
+        NSLog(@"exception:%@", exception);
+    }
+    @finally {
+        
+    }
+}
+
+- (NSInteger)getValidNextPageIndexWithPageIndext:(NSInteger)currentPageIndex;
+{
+    if (currentPageIndex == -1) {
+        return self.totalPageCount - 1;
+    }else if (currentPageIndex == self.totalPageCount || currentPageIndex < -1){
+        return 0;
+    }else if (currentPageIndex > self.totalPageCount){
+        return self.totalPageCount - 1;
+    }else{
+        return currentPageIndex;
+    }
+}
+
+- (BOOL)prefersStatusBarHidden {
+    return YES;
+}
+
+@end
+
+
+@implementation UMZoomScrollView
+{
+    UIActionSheet *actionSheet;
+}
+
+- (instancetype)initWithFrame:(CGRect)frame
+{
+    self = [super initWithFrame:frame];
+    if (self) {
+        self.delegate = self;
+        self.showsHorizontalScrollIndicator = NO;
+        self.showsVerticalScrollIndicator = NO;
+        self.backgroundColor = [UIColor clearColor];
+        UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(saveImageToAssest:)];
+        longPress.numberOfTouchesRequired = 1;
+        [self addGestureRecognizer:longPress];
+    }
+    return self;
+}
+
+- (void)setImageView:(UMImageProgressView *)imageView
+{
+    _imageView = imageView;
+    _imageView.center = CGPointMake(self.frame.size.width/2, self.frame.size.height/2);
+
+    _imageView.backgroundColor = [UIColor clearColor];
+    if (imageView.isCacheImage) {
+        self.minimumZoomScale = 1.0;
+        self.maximumZoomScale = 5.0;
+    } else{
+        self.minimumZoomScale = 1.0;
+        self.maximumZoomScale = 1.0;
+    }
+    [self addSubview:_imageView];
+}
+
+- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView
+{
+    return self.imageView;
+}
+
+- (void)scrollViewDidZoom:(UIScrollView *)scrollView
+{
+    CGFloat offsetX = (scrollView.bounds.size.width > scrollView.contentSize.width)?
+    (scrollView.bounds.size.width - scrollView.contentSize.width) /2 : 0.0;
+    CGFloat offsetY = (scrollView.bounds.size.height > scrollView.contentSize.height)?
+    (scrollView.bounds.size.height - scrollView.contentSize.height) /2 : 0.0;
+    self.imageView.center = CGPointMake(scrollView.contentSize.width /2 + offsetX,scrollView.contentSize.height /2 + offsetY);
+}
+
+//默认一周（60*60*24*7）
+- (void)setCacheSecondes:(NSTimeInterval)secondes
+{
+    [self.imageView setCacheSecondes:secondes];
+}
+
+- (void)startDownload
+{
+    [self.imageView startImageLoad];
+}
+
+- (void)saveImageToAssest:(UILongPressGestureRecognizer *)longPress
+{
+    if (longPress.state == UIGestureRecognizerStateBegan) {
+        if (![actionSheet isVisible]) {
+            actionSheet = [[UIActionSheet alloc]initWithTitle:nil delegate:self cancelButtonTitle:UMComLocalizedString(@"um_com_cancel", @"取消") destructiveButtonTitle:UMComLocalizedString(@"um_com_saveImageToAlbum", @"保存图片到相册")otherButtonTitles:nil, nil];
+            if (!actionSheet.superview) {
+                [actionSheet showInView:self.superview];
+            }
+        }
+    }
+}
+
+- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
+{
+    if (buttonIndex == 0) {
+        if (self.imageView.image) {
+            UIImageWriteToSavedPhotosAlbum(self.imageView.image, self, @selector(image:didFinishSavingWithError:contextInfo:), NULL);
+        }
+    }
+}
+
+
+
+// 指定回调方法
+- (void)image: (UIImage *) image didFinishSavingWithError: (NSError *) error contextInfo: (void *) contextInfo
+{
+    [UMComShowToast saveIamgeResultNotice:error];
+}
+
+
+
+@end