Application.scala – IT研究所

package controllers

import play.api._
import play.api.mvc._
import java.io._
import org.apache.batik.dom.svg._
import org.apache.batik.transcoder._
import org.apache.batik.transcoder.image._
import org.apache.batik.util.XMLResourceDescriptor;
import org.w3c.dom.Document
import java.awt.Rectangle
import org.apache.fop.svg.PDFTranscoder

import play.api.libs.iteratee._
import play.api.data._
import play.api.data.Forms._

case class Image(
	filename:String,
	scale:Int,
	imagetype:String,
	svg:String
)

object Application extends Controller {

	val imageDataForm = Form(
			mapping(
					"filename"->text,
					"scale"->number,
					"type"->text,
					"svg"->text
			)(Image.apply)(Image.unapply)
	)
	
	def index()=Action{implicit request =>
		Ok(views.html.index())
	}

	def makeImage()=Action{implicit request =>
		val image=imageDataForm.bindFromRequest.get
		
		val is=new ByteArrayInputStream(image.svg.getBytes())
		import scala.concurrent.ExecutionContext.Implicits._
		Ok.chunked(Enumerator.outputStream { os =>
			val tin=new TranscoderInput(is)	
			val tot=new TranscoderOutput(os)	
			getTranscoder(image.imagetype, 0.7f) match{
				case Some(x) =>{
					println("transcode:x="+x)
					x.transcode(tin,tot)
				}
				
				case _ => None			
			}
			os.flush
			os.close	
			println("flush")
		} >>> Enumerator.eof).withHeaders(
				"Content-Type" -> (image.imagetype),
				"Content-Disposition"->("attachment; filename="+image.filename)
		)	 
	}


	def getParameter(request:play.api.mvc.Request[play.api.mvc.AnyContent],str:String) = {
		request.queryString.get(str).flatMap(_.headOption) match {
			case Some(x) => x
			case None => ""
		}
	}
	
	def getDocument(is:InputStream):Document ={
				val parser = XMLResourceDescriptor.getXMLParserClassName()
				val f = new SAXSVGDocumentFactory(parser)
				val doc = f.createDocument("http://www.w3.org/2000/svg",is)
				return doc
	}
 
	def	getTranscoder( transcoderType:String,	keyQuality:Float ) :Option[Transcoder]={
		println("getTranscoder:"+transcoderType)
				transcoderType match{
					case "image/jpeg" =>Option(getJPEGTranscoder(keyQuality))
					case "image/png" => Option(getPNGTranscoder())
					case "application/pdf" => Option(new PDFTranscoder())
					case	_ => None
				}
		}
	
	def	getJPEGTranscoder( keyQuality:Float):JPEGTranscoder= {
				val jpeg = new JPEGTranscoder()
				jpeg.addTranscodingHint(JPEGTranscoder.KEY_QUALITY, keyQuality)
				return jpeg
		}
 
		def	getPNGTranscoder() :PNGTranscoder={
				return new PNGTranscoder();
		}
}

package controllers

import play.api._

import play.api.mvc._

import java.io._

import org.apache.batik.dom.svg._

import org.apache.batik.transcoder._

import org.apache.batik.transcoder.image._

import org.apache.batik.util.XMLResourceDescriptor;

import org.w3c.dom.Document

import java.awt.Rectangle

import org.apache.fop.svg.PDFTranscoder

import play.api.libs.iteratee._

import play.api.data._

import play.api.data.Forms._

case class Image(

filename:String,

scale:Int,

imagetype:String,

svg:String

)

object Application extends Controller {

val imageDataForm = Form(

mapping(

"filename"->text,

"scale"->number,

"type"->text,

"svg"->text

)(Image.apply)(Image.unapply)

)

def index()=Action{implicit request =>

Ok(views.html.index())

}

def makeImage()=Action{implicit request =>

val image=imageDataForm.bindFromRequest.get

val is=new ByteArrayInputStream(image.svg.getBytes())

import scala.concurrent.ExecutionContext.Implicits._

Ok.chunked(Enumerator.outputStream { os =>

val tin=new TranscoderInput(is)

val tot=new TranscoderOutput(os)

getTranscoder(image.imagetype, 0.7f) match{

case Some(x) =>{

println("transcode:x="+x)

x.transcode(tin,tot)

}

case _ => None

}

os.flush

os.close

println("flush")

} >>> Enumerator.eof).withHeaders(

"Content-Type" -> (image.imagetype),

"Content-Disposition"->("attachment; filename="+image.filename)

)

}

def getParameter(request:play.api.mvc.Request[play.api.mvc.AnyContent],str:String) = {

request.queryString.get(str).flatMap(_.headOption) match {

case Some(x) => x

case None => ""

}

def getDocument(is:InputStream):Document ={

val parser = XMLResourceDescriptor.getXMLParserClassName()

val f = new SAXSVGDocumentFactory(parser)

val doc = f.createDocument("http://www.w3.org/2000/svg",is)

return doc

}

def getTranscoder( transcoderType:String, keyQuality:Float ) :Option[Transcoder]={

println("getTranscoder:"+transcoderType)

transcoderType match{

case "image/jpeg" =>Option(getJPEGTranscoder(keyQuality))

case "image/png" => Option(getPNGTranscoder())

case "application/pdf" => Option(new PDFTranscoder())

case _ => None

}

def getJPEGTranscoder( keyQuality:Float):JPEGTranscoder= {

val jpeg = new JPEGTranscoder()

jpeg.addTranscodingHint(JPEGTranscoder.KEY_QUALITY, keyQuality)

return jpeg

}

def getPNGTranscoder() :PNGTranscoder={

return new PNGTranscoder();

}

index.scala.html

<html>
<head></head>
<body>

<form method="post" action="@routes.Application.makeImage()">
	<input type="hidden" name="filename" value="chart" />
	<input type="hidden" name="scale" value="2" />
	<input type="hidden" name="type" value="application/pdf" />

	<input type="hidden" name="svg" value="
		<svg xmlns='http://www.w3.org/2000/svg'	height='100' width='100'>
	<circle cx='50' cy='50' r='40' stroke='black' stroke-width='3' fill='red' /></svg> 
	" />
	<input type="submit" value="pdf"/>
</form>
<form method="post" action="@routes.Application.makeImage()">
	<input type="hidden" name="filename" value="chart" />
	<input type="hidden" name="scale" value="2" />
	<input type="hidden" name="type" value="image/png" />

	<input type="hidden" name="svg" value="
		<svg xmlns='http://www.w3.org/2000/svg'	height='100' width='100'>
	<circle cx='50' cy='50' r='40' stroke='black' stroke-width='3' fill='red' /></svg> 
	" />
	<input type="submit" value="png"/>
</form>
<form method="post" action="@routes.Application.makeImage()">
	<input type="hidden" name="filename" value="chart" />
	<input type="hidden" name="scale" value="2" />
	<input type="hidden" name="type" value="image/jpeg" />

	<input type="hidden" name="svg" value="
		<svg xmlns='http://www.w3.org/2000/svg'	height='100' width='100'>
	<circle cx='50' cy='50' r='40' stroke='black' stroke-width='3' fill='red' /></svg> 
	" />
	<input type="submit" value="jpeg"/>
</form>

</body>
</html>

<html>

<body>

<input type="hidden" name="svg" value="

" />

</form>

<input type="hidden" name="svg" value="

" />

</form>

<input type="hidden" name="svg" value="

" />

</form>

</body>

</html>

こんな感じでいけるかと思います

scala