Initial commit

2017-08-15 16:59:01 +08:00
commit bdc83e07ef
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+/*
+ 
+ MIT License (MIT)
+ 
+ Copyright (c) 2015 Clement CN Tsang
+ 
+ Permission is hereby granted, free of charge, to any person obtaining a copy
+ of this software and associated documentation files (the "Software"), to deal
+ in the Software without restriction, including without limitation the rights
+ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+ 
+ The above copyright notice and this permission notice shall be included in
+ all copies or substantial portions of the Software.
+ 
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ THE SOFTWARE.
+ 
+ */
+
+#import "PureLayout.h"
+#import "CTAssetThumbnailOverlay.h"
+#import "UIImage+CTAssetsPickerController.h"
+#import "PHAsset+CTAssetsPickerController.h"
+#import "PHAssetCollection+CTAssetsPickerController.h"
+
+
+
+@interface CTAssetThumbnailOverlay ()
+
+@property (nonatomic, strong) UIImageView *gradient;
+@property (nonatomic, strong) UIImageView *badge;
+@property (nonatomic, strong) UILabel *duration;
+
+@property (nonatomic, assign) BOOL didSetupConstraints;
+
+@end
+
+
+
+@implementation CTAssetThumbnailOverlay
+
+- (instancetype)initWithFrame:(CGRect)frame
+{
+    if (self = [super initWithFrame:frame])
+    {
+        self.opaque                 = NO;
+        self.clipsToBounds          = YES;
+        self.isAccessibilityElement = NO;
+        
+        [self setupViews];
+    }
+    
+    return self;
+}
+
+
+#pragma markt - Setup
+
+- (void)setupViews
+{
+    UIImageView *gradient = [UIImageView newAutoLayoutView];
+    gradient.image = [UIImage ctassetsPickerImageNamed:@"GridGradient"];
+    self.gradient = gradient;
+    
+    [self addSubview:self.gradient];
+    
+    UIImageView *badge = [UIImageView newAutoLayoutView];
+    badge.tintColor = [UIColor whiteColor];
+    self.badge = badge;
+    
+    [self addSubview:self.badge];
+    
+    UILabel *duration = [UILabel newAutoLayoutView];
+    duration.font = [UIFont preferredFontForTextStyle:UIFontTextStyleCaption2];
+    duration.textColor = [UIColor whiteColor];
+    duration.lineBreakMode = NSLineBreakByTruncatingTail;
+    duration.layoutMargins = UIEdgeInsetsMake(2.5, 2.5, 2.5, 2.5);
+    self.duration = duration;
+    
+    [self addSubview:self.duration];
+}
+
+#pragma mark - Update auto layout constraints
+
+- (void)updateConstraints
+{
+    if (!self.didSetupConstraints)
+    {
+        [self.gradient autoPinEdgesToSuperviewEdgesWithInsets:UIEdgeInsetsZero excludingEdge:ALEdgeTop];
+        [self.gradient autoSetDimension:ALDimensionHeight toSize:self.gradient.image.size.height];
+        [self.badge autoPinEdgeToSuperviewEdge:ALEdgeLeft withInset:self.badge.layoutMargins.left];
+        [self.badge autoPinEdgeToSuperviewEdge:ALEdgeBottom withInset:self.badge.layoutMargins.bottom];
+        [self.duration autoPinEdgeToSuperviewEdge:ALEdgeRight withInset:self.duration.layoutMargins.right];
+        [self.duration autoPinEdgeToSuperviewEdge:ALEdgeBottom withInset:self.duration.layoutMargins.bottom];
+        
+        
+        self.didSetupConstraints = YES;
+    }
+    
+    [super updateConstraints];
+}
+
+
+#pragma - Bind asset and duration
+
+- (void)bind:(PHAsset *)asset duration:(NSString *)duration;
+{
+    self.badge.image = [asset badgeImage];
+    self.badge.layoutMargins = [self layoutMarginsForAsset:asset];
+    self.duration.text = duration;
+    
+    [self setNeedsUpdateConstraints];
+    [self updateConstraintsIfNeeded];
+}
+
+- (UIEdgeInsets)layoutMarginsForAsset:(PHAsset *)asset
+{
+    if (asset.ctassetsPickerIsHighFrameRateVideo)
+        return UIEdgeInsetsMake(2.5, 2.5, 2.5, 2.5);
+    
+    else if (asset.ctassetsPickerIsTimelapseVideo)
+        return UIEdgeInsetsMake(2.5, 2.5, 2.5, 2.5);
+    
+    else if (asset.ctassetsPickerIsVideo)
+        return UIEdgeInsetsMake(4.5, 4.5, 4.5, 4.5);
+    
+    else
+        return UIEdgeInsetsZero;
+}
+
+
+#pragma - Bind asset collection
+
+- (void)bind:(PHAssetCollection *)assetCollection;
+{
+    self.badge.image = [assetCollection badgeImage];
+    self.badge.layoutMargins = [self layoutMarginsForAssetCollection:assetCollection];
+    self.duration.text = nil;
+    
+    [self setNeedsUpdateConstraints];
+    [self updateConstraintsIfNeeded];    
+}
+
+- (UIEdgeInsets)layoutMarginsForAssetCollection:(PHAssetCollection *)assetCollection
+{
+    return UIEdgeInsetsMake(4.0, 4.0, 4.0, 4.0);
+}
+
+@end