Statusbar application sample

Info.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>CFBundleExecutable</key>
	<string>statusbar</string>
	<key>NSPrincipalClass</key>
	<string>NSApplication</string>
	<key>LSUIElement</key>
	<true/>
</dict>
</plist>

Makefile

CC      = macrubyc
SO      = statusbar.rb
DIR     = statusbar.app
BIN     = statusbar

statusbar: $(SO)
	$(CC) $(SO) -o $(BIN)
	mkdir -p $(DIR)
	mv statusbar $(DIR)/
	cp Info.plist $(DIR)/
	rm *.o

statusbar.rb

#!/usr/bin/env macruby

framework 'Cocoa'

class StatusbarIcon < NSView
  def initialize(frame, controller)
    @highlight = false
    @controller = controller
    initWithFrame(frame)
  end
  
  def drawRect(rect)
    if @highlight
      NSColor.selectedMenuItemColor.set
      NSRectFill(rect)
    end
    
    text = "S"
    
    textColor = NSColor.controlTextColor
    if @highlight
      textColor = NSColor.selectedMenuItemTextColor
    end
    
    msgFont = NSFont.menuBarFontOfSize 15.0
    paraStyle = NSMutableParagraphStyle.alloc.init;
    paraStyle.setParagraphStyle(NSParagraphStyle.defaultParagraphStyle)
    paraStyle.setAlignment(NSCenterTextAlignment)
    paraStyle.setLineBreakMode(NSLineBreakByTruncatingTail)
    msgAttrs = {
      NSFontAttributeName => msgFont,
      NSForegroundColorAttributeName => textColor,
      NSParagraphStyleAttributeName => paraStyle,
    }
    
    msgSize = text.sizeWithAttributes(msgAttrs)
    msgRect = [
      (frame.size.width - msgSize.width) / 2.0,
      (frame.size.height - msgSize.height) / 2.0,
      msgSize.width,
      msgSize.height
    ]
    
    text.drawInRect(msgRect, withAttributes:msgAttrs)
  end

  def mouseDown(event)
    @controller.toggleMainWindow(self.window.frame)
  end
  
  def show
    @highlight = true
    setNeedsDisplay true
  end
  
  def hide
    @highlight = false
    setNeedsDisplay true
  end
end

class MainWindow < NSWindow
  def init(frame, controller)
    @controller = controller
    width = 300.0
    height = 300.0

    rect = [
      frame.origin.x,
      frame.origin.y - height,
      width,
      height
    ]
    window = self.initWithContentRect rect,
                            styleMask:NSBorderlessWindowMask,
                              backing:NSBackingStoreBuffered,
                                defer:false
    window.level = NSStatusWindowLevel
    window.hasShadow = true
    window.delegate = self

    button = NSButton.alloc.initWithFrame([80, 150, 120, 90])
    button.bezelStyle = 4
    button.title      = 'Quit'
    button.target     = self
    button.action     = 'quit:'
    window.contentView.addSubview(button)

    window
  end
  
  def show
    makeKeyAndOrderFront self
    NSApplication.sharedApplication.activateIgnoringOtherApps true
  end
  
  def hide
    orderOut self
  end
  
  def canBecomeKeyWindow
    true
  end

  def resignKeyWindow
    @controller.toggleMainWindow
  end

  def quit(sender)
    NSApp.terminate nil
  end
end

class App
  attr_accessor :main_window, :statusbar_icon

  def initialize
    bar = NSStatusBar.systemStatusBar
    item = bar.statusItemWithLength(NSVariableStatusItemLength)

    @statusbar_icon = StatusbarIcon.new([0, 0, 30.0, bar.thickness], self)
    item.view = @statusbar_icon
    item.highlightMode = true
    
    @barItem = item
  end

  def toggleMainWindow(frame = nil)
    if @main_window == nil
      @main_window = MainWindow.alloc.init(frame, self)
      @main_window.show
      @statusbar_icon.show
    else
      @main_window.hide
      @statusbar_icon.hide
      @main_window = nil
    end
  end
  
end

app = NSApplication.sharedApplication
NSApp.setActivationPolicy NSApplicationActivationPolicyAccessory
w = App.new

app.run