property |NSURL| : a reference to current application’s |NSURL|
property NSUUID : a reference to current application’s NSUUID
property NSArray : a reference to current application’s NSArray
property NSString : a reference to current application’s NSString
property NSImage : a reference to current application’s NSImage
property NSWorkspace : a reference to current application’s NSWorkspace
property NSPNGFileType : a reference to current application’s NSPNGFileType
property NSMutableArray : a reference to current application’s NSMutableArray
property NSBitmapImageRep : a reference to current application’s NSBitmapImageRep
property NSURLTypeIdentifierKey : a reference to current application’s NSURLTypeIdentifierKey

property xGap : 10 –連結時の画像間のアキ（横方向）

load framework

tell application "Finder"
　　tell front window
　　　　set curView to current view
　　　　if curView is not equal to icon view then
　　　　　　display dialog "最前面のウィンドウがアイコン表示になっていないので、処理を終了します。"
　　　　　　return
　　　　end if
　　　　
　　　　try
　　　　　　set posList to position of every file whose kind contains "イメージ" –"イメージ" is "image" or "picture" in Japanese
　　　　　　set fileList to (every file whose kind contains "イメージ") as alias list –"イメージ" is "image" or "picture" in Japanese
　　　　on error
　　　　　　display dialog "最前面のウィンドウに画像ファイルが配置されていないため、処理を中止します。"
　　　　　　return
　　　　end try
　　end tell
　　
　　set aList to {}
　　set aLen to length of posList
　　set bLen to length of fileList
　　if aLen is not equal to bLen then return
　　
　　repeat with i from 1 to aLen
　　　　set posItem to contents of item i of posList
　　　　set aPath to POSIX path of item i of fileList
　　　　set the end of aList to (posItem & aPath)
　　end repeat
end tell

–> {{127, 42, "/Users/me/Desktop/名称未設定フォルダ/000_keynote_print.png"}, {302, 43, "/Users/me/Desktop/名称未設定フォルダ/999_indesign_print.png"}}

set bList to sort2DListAscendingWithFirstItemKey(aList) of me
–> {{127, 42, "/Users/me/Desktop/名称未設定フォルダ/000_keynote_print.png"}, {302, 43, "/Users/me/Desktop/名称未設定フォルダ/999_indesign_print.png"}}

set cList to getEveryIndicatedItemsFrom2DList(bList, 3) of me
–>　　{​​​​​"/Users/me/Desktop/名称未設定フォルダ/000_keynote_print.png", ​​​​​"/Users/me/Desktop/名称未設定フォルダ/999_indesign_print.png"​​​}

–Finder最前面の画像ファイルをpathからImageを読み込んでArrayに入れる
set imgList to NSMutableArray’s new()
repeat with i in cList
　　set aPath to contents of i
　　
　　set imgRes to (my isImageAtPath:aPath)
　　if imgRes as boolean = true then
　　　　set aNSImage to (NSImage’s alloc()’s initWithContentsOfFile:aPath)
　　　　(imgList’s addObject:aNSImage)
　　end if
end repeat

–KVCで画像の各種情報をまとめて取得
set sizeList to (imgList’s valueForKeyPath:"size") as list –NSSize to list of record conversion
set maxHeight to ((NSArray’s arrayWithArray:sizeList)’s valueForKeyPath:"@max.height") as real
set totalWidth to ((NSArray’s arrayWithArray:sizeList)’s valueForKeyPath:"@sum.width") as real
set totalCount to ((NSArray’s arrayWithArray:sizeList)’s valueForKeyPath:"@count") as integer

–出力画像作成
set tSize to current application’s NSMakeSize((totalWidth + (xGap * totalCount)), maxHeight)
set newImage to NSImage’s alloc()’s initWithSize:tSize

–順次画像を新規画像に上書き
set xOrig to 0
repeat with i in (imgList as list)
　　set j to contents of i
　　set curSize to j’s |size|()
　　set aRect to {xOrig, (maxHeight – (curSize’s height())), (curSize’s width()), (curSize’s height())}
　　set newImage to composeImage(newImage, j, aRect) of me
　　set xOrig to xOrig + (curSize’s width()) + xGap
end repeat

–デスクトップにPNG形式でNSImageをファイル保存
set aDesktopPath to current application’s NSHomeDirectory()’s stringByAppendingString:"/Desktop/"
set savePath to aDesktopPath’s stringByAppendingString:((NSUUID’s UUID()’s UUIDString())’s stringByAppendingString:".png")
set fRes to saveNSImageAtPathAsPNG(newImage, savePath) of me

–2つのNSImageを重ね合わせ合成してNSImageで返す
on composeImage(backImage, composeImage, aTargerRect)
　　set newImage to NSImage’s alloc()’s initWithSize:(backImage’s |size|())
　　
　　copy aTargerRect to {x1, y1, x2, y2}
　　
　　newImage’s lockFocus()
　　
　　set v2 to system attribute "sys2"
　　if v2 ≤ 12 then
　　　　–To macOS 10.12.x
　　　　set bRect to current application’s NSMakeRect(x1, y1, x2, y2)
　　　　set newImageRect to current application’s CGRectZero
　　　　set newImageRect’s |size| to (newImage’s |size|)
　　else
　　　　–macOS 10.13 or later
　　　　set bRect to {{x1, y1}, {x2, y2}}
　　　　set newImageRect to {{0, 0}, (newImage’s |size|)}
　　end if
　　
　　backImage’s drawInRect:newImageRect
　　composeImage’s drawInRect:bRect
　　
　　newImage’s unlockFocus()
　　return newImage
end composeImage

–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

–指定のパスのファイルが画像かどうかをチェック
on isImageAtPath:aPath
　　set aURL to |NSURL|’s fileURLWithPath:aPath
　　set {theResult, theValue} to aURL’s getResourceValue:(reference) forKey:NSURLTypeIdentifierKey |error|:(missing value)
　　return (NSImage’s imageTypes()’s containsObject:theValue) as boolean
end isImageAtPath:

on sort2DListAscendingWithFirstItemKey(aList as list)
　　set sortIndexList to {0} –Key Item id: begin from 0
　　set sortOrders to {true} –ascending = true
　　set sortTypes to {"compare:"}
　　set resList to (current application’s SMSForder’s subarraysIn:(aList) sortedByIndexes:sortIndexList ascending:sortOrders sortTypes:sortTypes |error|:(missing value)) as list
　　return resList
end sort2DListAscendingWithFirstItemKey

–2D Listの各要素から、指定アイテムの要素だけを取り出してリストで返す
on getEveryIndicatedItemsFrom2DList(aList as list, anItem as integer) –this item No. begins from 1
　　set outList to {}
　　repeat with i in aList
　　　　set j to contents of item anItem of i
　　　　set the end of outList to j
　　end repeat
　　return outList
end getEveryIndicatedItemsFrom2DList

property |NSURL| : a reference to current application’s |NSURL|
property NSUUID : a reference to current application’s NSUUID
property NSArray : a reference to current application’s NSArray
property NSString : a reference to current application’s NSString
property NSImage : a reference to current application’s NSImage
property NSWorkspace : a reference to current application’s NSWorkspace
property NSPNGFileType : a reference to current application’s NSPNGFileType
property NSMutableArray : a reference to current application’s NSMutableArray
property NSBitmapImageRep : a reference to current application’s NSBitmapImageRep
property NSURLTypeIdentifierKey : a reference to current application’s NSURLTypeIdentifierKey

property yGap : 10 –連結時の画像間のアキ（横方向）

tell application "Finder"
　　set aSel to selection as alias list
　　if aSel = {} or aSel = "" then return
end tell

–選択した画像をArrayに入れる
set imgList to NSMutableArray’s new()
repeat with i in aSel
　　set aPath to POSIX path of i
　　
　　set imgRes to (my isImageAtPath:aPath)
　　if imgRes as boolean = true then
　　　　set aNSImage to (NSImage’s alloc()’s initWithContentsOfFile:aPath)
　　　　(imgList’s addObject:aNSImage)
　　end if
end repeat

–KVCで画像の各種情報をまとめて取得
set sizeList to (imgList’s valueForKeyPath:"size") as list –NSSize to list of record conversion
set maxWidth to ((NSArray’s arrayWithArray:sizeList)’s valueForKeyPath:"@max.width") as real
set totalHeight to (((NSArray’s arrayWithArray:sizeList)’s valueForKeyPath:"@sum.height") as real) + 50
set totalCount to ((NSArray’s arrayWithArray:sizeList)’s valueForKeyPath:"@count") as integer

–出力画像作成
set tSize to current application’s NSMakeSize(maxWidth, totalHeight + (yGap * totalCount))
set newImage to NSImage’s alloc()’s initWithSize:tSize

–順次画像を新規画像に上書き
set yOrig to 0
repeat with i in (imgList as list)
　　set j to contents of i
　　set curSize to j’s |size|()
　　–set aRect to {0, (maxWidth – (curSize’s height())), (curSize’s width()), (curSize’s height())}
　　set aRect to {0, (totalHeight – (curSize’s height())) – yOrig, (curSize’s width()), (curSize’s height())}
　　set newImage to composeImage(newImage, j, aRect) of me
　　set yOrig to yOrig + (curSize’s height()) + yGap
end repeat

–デスクトップにPNG形式でNSImageをファイル保存
set aDesktopPath to current application’s NSHomeDirectory()’s stringByAppendingString:"/Desktop/"
set savePath to aDesktopPath’s stringByAppendingString:((NSUUID’s UUID()’s UUIDString())’s stringByAppendingString:".png")
set fRes to saveNSImageAtPathAsPNG(newImage, savePath) of me

–2つのNSImageを重ね合わせ合成してNSImageで返す
on composeImage(backImage, composeImage, aTargerRect)
　　set newImage to NSImage’s alloc()’s initWithSize:(backImage’s |size|())
　　
　　copy aTargerRect to {x1, y1, x2, y2}
　　
　　newImage’s lockFocus()
　　
　　set v2 to system attribute "sys2"
　　if v2 ≤ 12 then
　　　　–To macOS 10.12.x
　　　　set bRect to current application’s NSMakeRect(x1, y1, x2, y2)
　　　　set newImageRect to current application’s CGRectZero
　　　　set newImageRect’s |size| to (newImage’s |size|)
　　else
　　　　–macOS 10.13 or later
　　　　set bRect to {{x1, y1}, {x2, y2}}
　　　　set newImageRect to {{0, 0}, (newImage’s |size|)}
　　end if
　　
　　backImage’s drawInRect:newImageRect
　　composeImage’s drawInRect:bRect
　　
　　newImage’s unlockFocus()
　　return newImage
end composeImage

–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