/* Title: Tools/Graphview/graph_file.scala
Author: Makarius
File system operations for graph output.
*/
package isabelle.graphview
import isabelle._
import java.io.{File => JFile}
import java.awt.{Color, Graphics2D}
object Graph_File
{
def write(file: JFile, graphview: Graphview)
{
val box = graphview.bounding_box()
val w = box.width.ceil.toInt
val h = box.height.ceil.toInt
def paint(gfx: Graphics2D)
{
gfx.setColor(graphview.background_color)
gfx.fillRect(0, 0, w, h)
gfx.translate(- box.x, - box.y)
graphview.paint(gfx)
}
val name = file.getName
if (name.endsWith(".png")) Graphics_File.write_png(file, paint _, w, h)
else if (name.endsWith(".pdf")) Graphics_File.write_pdf(file, paint _, w, h)
else error("Bad type of file: " + quote(name) + " (.png or .pdf expected)")
}
def write(options: Options, file: JFile, graph: Graph_Display.Graph)
{
val the_options = options
val graphview =
new Graphview(graph.transitive_reduction_acyclic) { def options = the_options }
graphview.update_layout()
write(file, graphview)
}
}