Initial commit

2017-08-15 16:59:01 +08:00
commit bdc83e07ef
5766 changed files with 423223 additions and 0 deletions
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+//
+//  UMAssetsCollectionGrid.m
+//  UMCommunity
+//
+//  Created by luyiyuan on 14/9/10.
+//  Copyright (c) 2014年 Umeng. All rights reserved.
+//
+
+#import "UMAssetsCollectionGrid.h"
+#import "UMAssetsCollectionCheckMarkView.h"
+#import "UMAssetsCollectionOverlayView.h"
+
+#define kNUMBEROFGRIDSINROW 4
+
+@interface UMAssetsCollectionGrid()
+@property (nonatomic, strong) UIImageView *imageView;
+@property (nonatomic, strong) UMAssetsCollectionOverlayView *overlayView;
+@property (nonatomic, strong) UIImage *blankImage;
+@end
+
+@implementation UMAssetsCollectionGrid
+
+- (id)initWithFrame:(CGRect)frame
+{
+    self = [super initWithFrame:frame];
+    if (self) {
+        
+        self.isSelected = NO;
+        
+
+        self.backgroundColor = [UIColor brownColor];
+        // Create a image view
+        UIImageView *imageView = [[UIImageView alloc] initWithFrame:self.bounds];
+        imageView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
+        
+        [self addSubview:imageView];
+        self.imageView = imageView;
+    }
+    return self;
+}
+
+- (void)setIsSelected:(BOOL)isSelected
+{
+    _isSelected = isSelected;
+    // Show/hide overlay view
+    if (isSelected) {
+        [self showOverlayView];
+    } else {
+        [self hideOverlayView];
+    }
+}
+
+- (void)showOverlayView
+{
+    [self hideOverlayView];
+    
+    UMAssetsCollectionOverlayView *overlayView = [[UMAssetsCollectionOverlayView alloc] initWithFrame:self.bounds];
+    overlayView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
+    
+    [self addSubview:overlayView];
+    self.overlayView = overlayView;
+}
+
+- (void)hideOverlayView
+{
+    if (self.overlayView) {
+        [self.overlayView removeFromSuperview];
+        self.overlayView = nil;
+    }
+}
+
+- (void)setAsset:(ALAsset *)asset
+{
+    _asset = asset;
+    
+    // Update view
+    CGImageRef thumbnailImageRef = [asset thumbnail];
+    
+    if (thumbnailImageRef) {
+        self.imageView.image = [UIImage imageWithCGImage:thumbnailImageRef];
+    } else {
+        self.imageView.image = [self blankImage];
+    }
+}
+
+- (UIImage *)blankImage
+{
+    if (_blankImage == nil) {
+        CGSize size = CGSizeMake(100.0, 100.0);
+        UIGraphicsBeginImageContextWithOptions(size, NO, 0.0);
+        
+        [[UIColor colorWithWhite:(240.0 / 255.0) alpha:1.0] setFill];
+        UIRectFill(CGRectMake(0, 0, size.width, size.height));
+        
+        _blankImage = UIGraphicsGetImageFromCurrentImageContext();
+        
+        UIGraphicsEndImageContext();
+    }
+    
+    return _blankImage;
+}
+
+@end