/*
 * File: PSdialog.java
 *
 * 2/16/97   Larry Barowski
 *
*/



   package EDU.auburn.VGJ.gui;


   import java.awt.Dialog;
   import java.awt.Button;
   import java.awt.Frame;
   import java.awt.Event;
   import java.awt.TextField;
   import java.awt.FileDialog;
   import java.awt.Checkbox;
   import java.io.PrintStream;
   import java.io.FileOutputStream;
   import java.io.IOException;
   import java.io.File;
   import java.lang.Process;
   import java.lang.Runtime;
   import java.lang.Exception;
   import EDU.auburn.VGJ.graph.Graph;



/**
 * A dialog class that allows the user to specify parameters for
 * PostScript output.
 * </p>Here is the <a href="../gui/PSdialog.java">source</a>.
 *
 *@author	Larry Barowski
**/


   public class PSdialog extends Dialog
   {
      private Graph graph_;
      private GraphCanvas graphCanvas_;
      private Frame frame_;
   
      private TextField width_, height_, pointSize_, margin_,
      		pWidth_, pHeight_, overlap_, printCmd_;
      private Checkbox landscape_;
   
   
      public PSdialog(Frame frame, GraphCanvas graph_canvas)
      {
         super(frame, "PostScript Output", false);
      
         graphCanvas_ = graph_canvas;
         frame_ = frame;
	 LPanel p = new LPanel();
      
	 p.addLineLabel("Printed Size (inches):", 0);
	 p.addLabel("Width", 1, 1, 0.0, 1.0, 0, 2);      
	 width_ = p.addTextField("8.5", 8, 1, -1, 1.0, 0.0, 1, 1);
	 p.addLabel("Height", 1, 1, 0.0, 1.0, 0, 2);      
	 height_ = p.addTextField("11", 8, 0, -1, 1.0, 0.0, 1, 1);
            
	 p.addLineLabel("Paper Size (inches) (A4 is 8.2677 x 11.6929):", 0);
	 p.addLabel("Width", 1, 1, 0.0, 1.0, 0, 2);      
	 pWidth_ = p.addTextField("8.5", 8, 1, -1, 1.0, 0.0, 1, 1);
	 p.addLabel("Height", 1, 1, 0.0, 1.0, 0, 2);      
	 pHeight_ = p.addTextField("11", 8, 0, -1, 1.0, 0.0, 1, 1);

         p.addLabel("Font Size (points)", 3, 1, 0.0, 1.0, 0, 2);
	 pointSize_ = p.addTextField("10", 8, 0, -1, 1.0, 0.0, 1, 1);      
         p.addLabel("Outside Margin (inches)", 3, 1, 0.0, 1.0, 0, 2);
	 margin_ = p.addTextField(".5", 8, 0, -1, 1.0, 0.0, 1, 1);      
         p.addLabel("Multi-Page Overlap (inches)", 3, 1, 0.0, 1.0, 0, 2);
	 overlap_ = p.addTextField(".5", 8, 0, -1, 1.0, 0.0, 1, 1);      
      
         landscape_ = new Checkbox("Landscape", null, false);
         p.addComponent(landscape_, 0, -1, 0.0, 1.0, 0, 0);
      
	 p.addLineLabel("System Print Command:", 0);
	 printCmd_ = p.addTextField("/usr/ucb/lpr", 8, 0, -1, 1.0, 1.0, 1, 0);
      
	 p.addButtonPanel("View Save Print Close", 0);
      
         p.finish();
	 add("Center", p);
	 pack();
         show();
      }
   
   
   
   
   
      public boolean action(Event event, Object object)
      {
         if(event.target instanceof Button)
         {
            if("View".equals(object))
            {
               String PS = getPS_();
               if(PS != null)
                  new TextOutDialog(frame_, "PostScript",
                     PS, false);
            }
            else if("Close".equals(object))
            {
               hide();
            }
            else if("Save".equals(object))
            {
               String PS = getPS_();
               if(PS == null)
                  return false;
            
               try
               {
                  String filename;
                  FileDialog fd;

		  try {
  		     fd = new FileDialog(frame_, "Save PostScript", FileDialog.SAVE);
                     fd.show(); }
                  catch(Throwable e) {
                     MessageDialog dg = new MessageDialog(frame_,
                        "Error", "It appears your VM does not allow file saving.", true);
                     return true;
                  }
                  filename = fd.getFile();
                  if(filename == null)
                     return true;
               
                  // Work around JDK Windows bug.
                  if(filename.endsWith(".*.*"))
                  {
                     String tmpstr = filename.substring(0, filename.length() - 4);
                     filename = tmpstr;
                  }
               
                  filename = fd.getDirectory() + filename;
               
                  PrintStream ps = new PrintStream(new FileOutputStream(filename));
               
                  ps.println(PS);
                  ps.close();
               
               }
                  catch (IOException e)
                  {
                     MessageDialog dg = new MessageDialog(frame_,
                     "Error", e.getMessage(), true);
                  }
            }
            else if("Print".equals(object))
            {
               String PS = getPS_();
               if(PS == null)
                  return false;
            
               File file = new File("vgj00.ps");
               try
               {
                  PrintStream ps = new PrintStream(new FileOutputStream(file));
                  ps.println(PS);
                  ps.close();
               
                  String cmd = new String(printCmd_.getText() + " " + "vgj00.ps");
                  Runtime.getRuntime().exec(cmd).waitFor();
               }
                  catch (Exception e)
                  {
                     MessageDialog dg = new MessageDialog(frame_,
                     "Error", "Printing error: " + e.getMessage(), true);
                  }
               try
               {
                  file.delete();
               }
                  catch(Exception e)
                   // Delete fails from appletviewer (although
                   // writing over is allowed).
                  {
                  }
            
            }
         }
         else if(event.target instanceof Checkbox)
         {
            String tmp = width_.getText();
            String tmp2 = height_.getText();
            width_.setText(tmp2);
            height_.setText(tmp);
         }
      
         return false;
      }
   
   
   
      private String getPS_()
      {
         double width = 7.5, height = 10, p_width = 7.5, p_height = 7.5,
		fontsize = 10, margin = .5, overlap = .5;
         boolean landscape = false;
      
         try
         {
            width = getVal_(width_, "Width", 1.0, 1000000.0);
            height = getVal_(height_, "Height", 1.0, 1000000.0);
            p_width = getVal_(pWidth_, "Parer Width", 1.0, 1000000.0);
            p_height = getVal_(pHeight_, "Paper Height", 1.0, 1000000.0);
            fontsize = getVal_(pointSize_ , "Font Size", .5, 100.0);
            margin = getVal_(margin_, "Margin", 0.0, 4.0);
            overlap = getVal_(overlap_, "Overlap", 0.0, 2.0);
         }
         catch (NumberFormatException e)
            {
               return null;
            }
      
         if(width - margin * 2.0 < 1.0)
         {
            new MessageDialog(frame_, "Error",
               "Width minus twice margin must be at least one inch.", true);
            return null;
         }
         if(height - margin * 2.0 < 1.0)
         {
            new MessageDialog(frame_, "Error",
               "Height minus twice margin must be at least one inch.", true);
            return null;
         }
      
         landscape = landscape_.getState();
         return graphCanvas_.toPS(width, height, p_width, p_height, fontsize,
            margin, overlap, landscape);
      }
   


      private double getVal_(TextField text, String name, double min, double max)
      {
         double result = 1.0;
      
         try
         {
            result = Double.valueOf(text.getText()).doubleValue();
         }
            catch (NumberFormatException e)
            {
               result = 1.0;
               String msg = "Bad format for " + name + ".";
               new MessageDialog(frame_, "Error", msg, true);
            
               throw e;
            }
      
         if(result < min)
         {
            String msg = name + " must be at least " + min + ".";
            new MessageDialog(frame_, "Error", msg, true);
         
            throw new NumberFormatException();
         }
      
         if(result > max)
         {
            String msg = name + " must be no more than " + max + ".";
            new MessageDialog(frame_, "Error", msg, true);
         
            throw new NumberFormatException();
         }
      
         return result;
      }
   
   
      public boolean handleEvent(Event event) {
	 // Avoid having everything destroyed.
         if (event.id == Event.WINDOW_DESTROY)
         {
            hide();
            return true;
         }
         return super.handleEvent(event);
      }

   }