xhruso00

NSTIFFCompression with zip has enum value 8

NSData *originalData = [NSData dataWithContentsOfURL:URL];
NSImage *image = [[NSImage alloc] initByReferencingURL:URL];
NSBitmapImageRep *imageRep = (NSBitmapImageRep *)[[image representations] firstObject];

NSLog(@"%@", [NSBitmapImageRep localizedNameForTIFFCompressionType:8]); //prints null
BOOL canBecompressed = [imageRep canBeCompressedUsing:8];

NSLog(@"%d", canBecompressed); //prints NO

xhruso00

WWDC                                      2007  2008  2009
2010 2011 2012 2013 2014 2015 

xhruso00

import Cocoa

class SomeView : NSView {
    var trackingArea : NSTrackingArea?
    
    override func draw(_ dirtyRect: NSRect) {
        NSColor.red.setFill()
        dirtyRect.fill()
    }
    

xhruso00

#import <Cocoa/Cocoa.h>
#import <CoreImage/CoreImage.h>

@protocol CILineOverlay <CIFilter>
  @property (nonatomic, retain) CIImage *inputImage;
  @property (nonatomic) float threshold;
@end

@interface CIFilter(CILineOverlay)
+ (CIFilter<CILineOverlay>*) lineOverlayFilter;

xhruso00

 点我达iOS首页
iOS Block探究

 2017/12/28
###

iOS Block探究
Block 结构体

对应的结构体定义如下:

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#import <AVFoundation/AVFoundation.h>

@interface AVCaptureDevice(Additions)

+ (NSArray<AVCaptureDevice *>*)inputCameraDevices;
- (BOOL)isBuiltIn;
- (BOOL)hasVideoMedia;
- (BOOL)canOpenCamera;

@end

xhruso00

The dynamic wallpaper in MacOS Mojave is a single 114 MB .heic file that seems to contain 16 embedded images.

It also contains the following binary plist data in its metadata under the key "Solar". It's an array of 16 items, each with four keys:

• i (integer). This seems to be the image index.
• o (integer). This is always 1 or 0. Stephen Radford thinks it indicates dark mode (0) vs. light mode (1).
• a (decimal). I’m pretty sure this is the angle of the sun over the horizon. 0º = sunset/sunrise. 90º = sun directly overhead. Negative values = sun below horizon.
• z (decimal). This seems to be the cardinal position of the sun relative to the camera. 0º = sun is directly in front of the camera. 90º = sun is directly to the right of the camera. 180º = sun is directly behind the camera.

xhruso00

1. Quit Photos app and run command "launchctl stop photolibraryd"
2. Use sqlite3 or some app to edit "database/photos.db" file; run SQL command UPDATE RKVersion SET createDate = imageDate WHERE imageDate >0
3. Run command "launchctl start photolibraryd"

xhruso00

// need to include <Carbon/Carbon.h> and link against Carbon.framework
// not every layout/input method has TIFF icon

CFArrayRef list = TISCreateInputSourceList(NULL, true); 

for (int i = 0; i < CFArrayGetCount(list); i++) {       
  TISInputSourceRef source = (TISInputSourceRef)CFArrayGetValueAtIndex(list, i);      
  IconRef icon = TISGetInputSourceProperty(source, kTISPropertyIconRef);

  CFStringRef sourceID = TISGetInputSourceProperty(source, kTISPropertyInputSourceID);

xhruso00

//
//  main.m
//  antidebugging
//
//  Created by Vincent Tan on 7/8/15.
//  Copyright (c) 2015 Vincent Tan. All rights reserved.
//

#import <UIKit/UIKit.h>
#import "AppDelegate.h"