property |NSURL| : a reference to current application’s |NSURL|
property NSColor : a reference to current application’s NSColor
property NSString : a reference to current application’s NSString
property NSImage : a reference to current application’s NSImage
property NSScreen : a reference to current application’s NSScreen
property NSBezierPath : a reference to current application’s NSBezierPath
property NSPNGFileType : a reference to current application’s NSPNGFileType
property NSBitmapImageRep : a reference to current application’s NSBitmapImageRep

set tCol to choose color
copy tCol to {rVal, gVal, bVal}

set aRadius to 12
set aNSColor to makeNSColorFromRGBAval(rVal, gVal, bVal, 65535, 65535) of me
set aNSImage to makeRoundedNSImageWithFilledWithColor(100, 100, aNSColor, aRadius) of me

set aPath to NSString’s stringWithString:(POSIX path of (choose file name))
set bPath to aPath’s stringByAppendingPathExtension:"png"
set aRes to saveNSImageAtPathAsPNG(aNSImage, bPath) of me

–指定サイズのNSImageを作成し、指定色で塗ってNSImageで返す、anRadiusの半径の角丸で
on makeRoundedNSImageWithFilledWithColor(aWidth, aHeight, fillColor, anRadius as real)
　　set anImage to NSImage’s alloc()’s initWithSize:(current application’s NSMakeSize(aWidth, aHeight))
　　anImage’s lockFocus()
　　—
　　set theRect to {{x:0, y:0}, {height:aHeight, width:aWidth}}
　　set theNSBezierPath to NSBezierPath’s bezierPathWithRoundedRect:theRect xRadius:anRadius yRadius:anRadius
　　—
　　fillColor’s |set|() –色設定
　　theNSBezierPath’s fill() –ぬりつぶし
　　—
　　anImage’s unlockFocus()
　　
　　return anImage
end makeRoundedNSImageWithFilledWithColor

–aMaxValを最大値とする数値でNSColorを作成して返す
on makeNSColorFromRGBAval(redValue as integer, greenValue as integer, blueValue as integer, alphaValue as integer, aMaxVal as integer)
　　set aRedCocoa to (redValue / aMaxVal) as real
　　set aGreenCocoa to (greenValue / aMaxVal) as real
　　set aBlueCocoa to (blueValue / aMaxVal) as real
　　set aAlphaCocoa to (alphaValue / aMaxVal) as real
　　set aColor to NSColor’s colorWithCalibratedRed:aRedCocoa green:aGreenCocoa blue:aBlueCocoa alpha:aAlphaCocoa
　　return aColor
end makeNSColorFromRGBAval

–NSImageを指定パスにPNG形式で保存
on saveNSImageAtPathAsPNG(anImage, outPath)
　　set imageRep to anImage’s TIFFRepresentation()
　　set aRawimg to NSBitmapImageRep’s imageRepWithData:imageRep
　　
　　set pathString to NSString’s stringWithString:outPath
　　set newPath to pathString’s stringByExpandingTildeInPath()
　　
　　set myNewImageData to (aRawimg’s representationUsingType:(NSPNGFileType) |properties|:(missing value))
　　set aRes to (myNewImageData’s writeToFile:newPath atomically:true) as boolean
　　
　　return aRes –成功ならtrue、失敗ならfalseが返る
end saveNSImageAtPathAsPNG