root/lang/scala/sandbox/src/jp/ryugate/image/Graphics.scala @ 5723

package jp.ryugate.image

import java.awt._
import java.awt.image._
import java.awt.geom._
import java.awt.font._

class Graphics(grp:Graphics2D) {
  def setAntialias(f:boolean):Unit = f match {
    case true => {
      setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON)
      setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON)
    }        
    case false => {
      setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF)
      setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF)
    }        
  }

  def antialias(f:(Graphics => Unit)) = {
    val now_rh = grp.getRenderingHint(RenderingHints.KEY_ANTIALIASING)
    val now_trh = grp.getRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING)
    setAntialias(true)
    f(this)
    setRenderingHint(RenderingHints.KEY_ANTIALIASING, now_rh)
    setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, now_trh)
  }    
   
  def layer(x:int, y:int, w:int, h:int)(f:(Graphics => Unit)) = {
    val layer = new BufferedImage(w,h, BufferedImage.TYPE_INT_ARGB_PRE)
    val g = layer.createGraphics
    g.setBackground(Color.BLACK)
    g.setColor(Color.WHITE)
    f(new Graphics(g))
    val op = new AffineTransformOp(new AffineTransform(), AffineTransformOp.TYPE_BICUBIC)
    grp.drawImage(layer, op, x, y)
  }
  
  def line(x1:int, y1:int, x2:int, y2:int) = grp.draw(new Line2D.Double(x1,y1,x2,y2))  
  def arc_chord(x:int, y:int, w:int, h:int, start:int, extent:int) = grp.draw(new Arc2D.Double(x,y,w,h,start,extent,Arc2D.CHORD))

  //------------------------------------------------
  def setBackground(color:Color):Unit = grp.setBackground(color)
  def clearRect(x:int, y:int, w:int, h:int) = grp.clearRect(x,y,w,h)
  def setColor(c:Color) = grp.setColor(c)
  def draw(s:Shape) = grp.draw(s)
  def setRenderingHint(hk:RenderingHints.Key, hv:Object) = grp.setRenderingHint(hk,hv)
  def drawString(str:String, x:int,y:int) = grp.drawString(str, x,y)
  def setFont(name:String, style:int, size:int) = grp.setFont(new Font(name, style, size))
}