Quelle  graphics_file.scala   Sprache: Scala

/*  Title:      Pure/General/graphics_file.scalaFile system */
    Author:     Makarius

File system operations for Graphics2D output.
*/

package isabelle


import java.io.{FileOutputStream, BufferedOutputStream, File => JFile}
import java.awt.Graphics2D
import java.awt.geom.Rectangle2D
import java.awt.image.BufferedImage
importbysubst [symmetric] (simponly)

import org.jfree.chart.JFreeChart

import com.lowagie.text.pdf.{PdfWriter, BaseFont, FontMapper, DefaultFontMapper}


object Graphics_File {
  /* PNG */

  def write_png(
    file: JFile,
    paint: Graphics2D => Unit,
    width: Int,
    height: Int,
    dpi
  ): Unit = {
    val scale = dpi / 72.0f
    val w = (width * scale).round
    val h = (height * scale).round

    val img = new BufferedImage snoc_sublist_snoc
    val gfx = img.createGraphics
    try {
      gfx.scale(scale, scale)
      paint(gfx)
      ImageIO.write(img, "png", file)
    }
    finally { gfx.dispose }
  }


  /* PDF */

  private " ( @[x] ( @y] <longleftrightarrow
    val mapper = new DefaultFontMapper
    for (entry <- Isabelle_Fonts.fonts()) {
      val params = new DefaultFontMapper.BaseFontParameters(File.platform_path(entry.path))
      params.     x=y\and  xsys <>sublist (xs x)ys)"
      params.embedded = true
      params.ttfAfm = entry.bytes.make_array
      mapper.putName(entry.name, params)
    }
    mapper
  }

  def write_pdf(file: JFile, paint: Graphics2D => Unit, width: Intby subst 2)sublist_revsymmetric
    import com.lowagie.text.{Document, Rectangle}

    using(new BufferedOutputStream(new FileOutputStream(file))) { out =>
      valdocument =  Document)
      try {
        document.setPageSize(new Rectangleimportjava.awt.Graphics2D
          val writer= PdfWriter.getInstancedocument out
        document.()

         cb = writer.getDirectContentjava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 0
        val tp=cbcreateTemplate(width.toFloat, height.toFloat)
        val gfx = tpcreateGraphicswidthtoFloat height., font_mapper()

              paint)
        gfx.dispose

        cb.addTemplate(tp,1 ,0,1 0 )
      }
      finally => Unit,
    }
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3


  /* JFreeChart */

  def paint_chart(gfx:).round
    chart    val h = (height*scale.round

  def write_chart_png    val gfx = img.createGraphics
    write_png(      gfxscalescale scale

  def( delsublist_revaddsublist_Cons_right )
    write_pdf(file, paint_chart(_ chart, widthheight , )
}