iOS, Android, Flutter and React Native Blog

Category: macOS

macOS (previously Mac OS X and later OS X) is a proprietary graphical operating system developed and marketed by Apple Inc. since 2001. It is the primary operating system for Apple’s Mac computers.

  • Capture first frame of the video as an image on iOS and macOS in swift

    Capture first frame of the video as an image on iOS and macOS in swift

    import Foundation
import Cocoa
import AVKit
import AVFoundation

let asset: AVURLAsset = AVURLAsset.init(url: "URL OF ANY VIDEO local/remote")
let imgGenerator: AVAssetImageGenerator = AVAssetImageGenerator.init(asset: asset)
imgGenerator.appliesPreferredTrackTransform = true
            
imgGenerator.generateCGImagesAsynchronously(forTimes: [NSValue(time: CMTime.zero)]) { (_, image, _, res, error) in
                
                if error == nil {
                    DispatchQueue.main.async {
                           let imageView = NSImage.init(cgImage: image!, size: NSSize.init(width: 180.0, height: 180.0));
                    }
                } else {
                    DispatchQueue.main.async {
                        // Some other fallback image
                    }
                }
}
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  • NSTableView custom highlight color with NSTableRowView

    Getting the right color when you select NSTableView’s row was frustrating for me since I didn’t know how to do it properly. But it is really simple, all you need to do is having a class inherit from NSTableRowView and override its method drawSelection(in dirtyRect: NSRect).

    import Foundation
import Cocoa

class MenuTableRowView: NSTableRowView {

    override func drawSelection(in dirtyRect: NSRect) {
        if self.selectionHighlightStyle != .none {
            let selectionRect = NSInsetRect(self.bounds, 2.5, 2.5)
            
            if let color = NSColor.init(named: NSColor.Name("menu_table_selection_color")) {
                color.setFill()
            }
            
            let selectionPath = NSBezierPath.init(roundedRect: selectionRect, xRadius: 0, yRadius: 0)
            selectionPath.fill()
        }
    }
    
}

    Change menu_table_selection_color value in Assets.xcassets file.

    Custom NSTableRowView

    Now go to your NSTableViewDelegate’s method add your custom NSTableRowView.

     func tableView(_ tableView: NSTableView, rowViewForRow row: Int) -> NSTableRowView? {
        return MenuTableRowView()
}

    Here you can see how my Storyboard looks like. Table view highlight value must be regular.

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  • Install PHP 5.6 on macOS Catalina

    Install PHP 5.6 on macOS Catalina

    These steps worked on my Mac, Catalina version 10.15.3 (19D76).

    Step 1: Tap deprecated brew formula

    brew tap exolnet/homebrew-deprecated

    Step 2: Install PHP 5.6

    brew install [email protected]

    You can also have PHP 7.2 just run 

    brew install [email protected]

    Step 3: Install PHP switcher script to switch between 5.6 and 7.2

    $ curl -L https://gist.githubusercontent.com/rhukster/f4c04f1bf59e0b74e335ee5d186a98e2/raw > /usr/local/bin/sphp 
    $ chmod +x /usr/local/bin/sphp

    If you run sphp 7.2 it should work but running sphp 5.6 will not work and will show error like this from apache.

    Library not loaded: /usr/local/opt/openssl/lib/libcrypto.1.0.0.dylibn  Referenced from: /usr/local/opt/[email protected]/lib/httpd/modules/libphp5.son  Reason: image not found

    Unless we switch openssl version, it wont work. So we have to install old openssl

    Step 4: Install old openssl

    brew install https://github.com/tebelorg/Tump/releases/download/v1.0.0/openssl.rb

    Step 5: Switch to openssl 1.0

    brew switch openssl 1.0.2t

    Now you switch to PHP 5.6 by 

    sphp 5.6

    Everything works.

    You can run these commands to check which version of openssl is being used in your mac.

    brew info openssl and brew info openssh

     

     

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