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113 lines
3.7 KiB
Objective-C
Executable file
113 lines
3.7 KiB
Objective-C
Executable file
//
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// OSKActivityIconButton.m
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// Overshare
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//
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// Created by Jared Sinclair on 10/13/13.
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// Copyright (c) 2013 Overshare Kit. All rights reserved.
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//
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#import "OSKActivityIcon.h"
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#import "OSKInMemoryImageCache.h"
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static UIImage * OSKActivityIconMaskImage;
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@interface OSKActivityIcon ()
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@property (copy, nonatomic) NSString *imageKey;
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@end
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@implementation OSKActivityIcon
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- (id)initWithFrame:(CGRect)frame {
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self = [super initWithFrame:frame];
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if (self) {
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[self commonInit];
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}
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return self;
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}
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- (UIImage *)maskImage {
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if (OSKActivityIconMaskImage == nil) {
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OSKActivityIconMaskImage = ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad)
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? [UIImage imageNamed:@"osk-iconMask-bw-76.png"]
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: [UIImage imageNamed:@"osk-iconMask-bw-60.png"];
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}
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return OSKActivityIconMaskImage;
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}
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- (void)awakeFromNib {
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[super awakeFromNib];
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[self commonInit];
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}
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- (void)commonInit {
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self.backgroundColor = [UIColor clearColor];
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self.userInteractionEnabled = NO;
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}
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- (void)maskImage:(UIImage *)image withMask:(UIImage *)maskImage completion:(void(^)(UIImage *maskedImage))completion {
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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CGImageRef maskRef = maskImage.CGImage;
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CGImageRef mask = CGImageMaskCreate(CGImageGetWidth(maskRef),
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CGImageGetHeight(maskRef),
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CGImageGetBitsPerComponent(maskRef),
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CGImageGetBitsPerPixel(maskRef),
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CGImageGetBytesPerRow(maskRef),
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CGImageGetDataProvider(maskRef), NULL, false);
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CGImageRef maskedImageRef = CGImageCreateWithMask([image CGImage], mask);
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CGFloat scale = [[UIScreen mainScreen] scale];
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UIImage *maskedImage = [UIImage imageWithCGImage:maskedImageRef scale:scale orientation:UIImageOrientationUp];
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CGImageRelease(mask);
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CGImageRelease(maskedImageRef);
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dispatch_async(dispatch_get_main_queue(), ^{
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if (completion) {
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completion(maskedImage);
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}
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});
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});
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}
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- (NSString *)keyForActivityType:(NSString *)type displayString:(NSString *)displayString {
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return [NSString stringWithFormat:@"%@_%@", type, displayString];
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}
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- (void)setBackgroundImage:(UIImage *)image forActivityType:(NSString *)type displayString:(NSString *)displayString {
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NSString *imageKey = [self keyForActivityType:type displayString:displayString];
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if ([_imageKey isEqualToString:imageKey] == NO) {
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[self setImageKey:imageKey];
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UIImage *cachedImage = [[OSKInMemoryImageCache sharedInstance] objectForKey:imageKey];
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if (cachedImage) {
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[self setAlpha:1];
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[self setBackgroundImage:cachedImage forState:UIControlStateNormal];
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} else {
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[self setAlpha:0];
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__weak OSKActivityIcon *weakSelf = self;
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[self maskImage:image withMask:[self maskImage] completion:^(UIImage *maskedImage) {
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if ([weakSelf.imageKey isEqualToString:imageKey]) { // May have changed during processing
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[weakSelf setBackgroundImage:maskedImage forState:UIControlStateNormal];
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[UIView animateWithDuration:0.1 delay:0 options:UIViewAnimationOptionBeginFromCurrentState animations:^{
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[weakSelf setAlpha:1.0];
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} completion:nil];
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[[OSKInMemoryImageCache sharedInstance] setObject:maskedImage forKey:imageKey];
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}
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}];
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}
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}
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}
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@end
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