MacRuby: UIKit framework for Mac OS X (http://chameleonproject.org/) (https://github.com/BigZaphod/Chameleon/)

uikitdemo.rb

#!/usr/local/bin/macruby

# This example is done with MacRuby and the UIKit framework for Mac OS X 
#  http://chameleonproject.org/
#  https://github.com/BigZaphod/Chameleon/

framework 'Cocoa'
framework "UIKit" # garbage collected version, the current version of Chameleon ist not known to be GC-safe

###################

# generating the BridgeSupport file:
# mkdir -p /Library/Frameworks/UIKit.framework/Resources/BridgeSupport
# gen_bridge_metadata -f /Library/Frameworks/UIKit.framework -o /Library/Frameworks/UIKit.framework/Resources/BridgeSupport/UIKit.bridgesupport

###################

class AppDelegate

  def initialize(v)
    @view = v
  end
  
  def applicationDidFinishLaunching(notification)
    chameleonApp = ChameleonAppDelegate.new
    @view.launchApplicationWithDelegate(chameleonApp, afterDelay:0.5)
  end
  
end

###################

class ChameleonAppDelegate

  def applicationDidFinishLaunching(application)
    @window = UIWindow.alloc.initWithFrame(UIScreen.mainScreen.applicationFrame)
    @window.backgroundColor = UIColor.whiteColor
    @window.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight
      
    ns_img = NSImage.alloc.initWithContentsOfFile "apple.png"
    ns_img ||= NSImage.imageNamed( NSImageNameTrashFull)
    @imageRect = CGRectMake(0,0,ns_img.size.width,ns_img.size.height)
    @imageView = UIImageView.alloc.initWithImage( UIImage.imageWithData(ns_img.TIFFRepresentation))
    @window.addSubview(@imageView)
  
    @window.addSubview(UIButton.buttonWithType(UIButtonTypeRoundedRect).tap do |b|
      b.setTitle("Click Me!", forState:UIControlStateNormal)
      b.setTitleColor(UIColor.whiteColor, forState:UIControlStateNormal)
      b.addTarget(self, action:'moveTheImage:', forControlEvents:UIControlEventTouchUpInside)
      b.frame = CGRectMake(22,300,200,50)
    end)
    
    @window.makeKeyAndVisible
  end
  
  def moveTheImage(sender,event)
    UIView.beginAnimations("moveTheImage", context:nil)
    UIView.setAnimationDuration(3)
    UIView.setAnimationBeginsFromCurrentState(true)
    if (CGAffineTransformIsIdentity(@imageView.transform))
      @imageView.transform = CGAffineTransformMakeScale(2,2)
      @imageView.center = @window.convertPoint(@window.center, toView:@imageView.superview)
    else
      @imageView.transform = CGAffineTransformIdentity
      @imageView.frame = @imageRect
    end  
    UIView.commitAnimations
  end
  
end

###################

NSApplication.sharedApplication
NSApp.setActivationPolicy NSApplicationActivationPolicyRegular

NSApp.setMainMenu(NSMenu.new.tap do |menu|
  menu.addItem(NSMenuItem.new.tap do |menu_item|
    menu_item.setSubmenu(NSMenu.new.tap do |sub_menu|
      sub_menu.addItem NSMenuItem.alloc.
        initWithTitle "Quit #{NSProcessInfo.processInfo.processName}",
        action: 'terminate:',
        keyEquivalent: 'q'
    end)
  end)
end)

view = UIKitView.alloc.init

NSWindow.alloc.initWithContentRect(
  [200,200,500,500],
  styleMask:NSTitledWindowMask,
  backing: NSBackingStoreBuffered,
  defer: false
).tap do |win|
  win.title = "Macruby UIKit Demo"
  win.orderFrontRegardless
  win.setContentView view
end

NSApp.activateIgnoringOtherApps true
NSApp.setDelegate(AppDelegate.new(view))

NSApp.run