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/*
Copyright Paul James Mutton, 2001-2004, http://www.jibble.org/
This file is part of EpsGraphics2D.
This software is dual-licensed, allowing you to choose between the GNU
General Public License (GPL) and the www.jibble.org Commercial License.
Since the GPL may be too restrictive for use in a proprietary application,
a commercial license is also provided. Full license information can be
found at http://www.jibble.org/licenses/
$Author: pjm2 $
$Id: EpsDocument.java,v 1.9 2004/07/20 17:42:29 pjm2 Exp $
*/
package org.jibble.epsgraphics;
import java.util.*;
import java.io.*;
/**
* This represents an EPS document. Several EpsGraphics2D objects may point
* to the same EpsDocument.
*
* Copyright Paul Mutton,
* http://www.jibble.org/
*
*/
public class EpsDocument {
/**
* Constructs an empty EpsDevice.
*/
public EpsDocument(String title) {
_title = title;
minX = Float.POSITIVE_INFINITY;
minY = Float.POSITIVE_INFINITY;
maxX = Float.NEGATIVE_INFINITY;
maxY = Float.NEGATIVE_INFINITY;
_stringWriter = new StringWriter();
_bufferedWriter = new BufferedWriter(_stringWriter);
}
/**
* Constructs an empty EpsDevice that writes directly to a file.
* Bounds must be set before use.
*/
public EpsDocument(String title, OutputStream outputStream, int minX, int minY, int maxX, int maxY) throws IOException {
_title = title;
this.minX = minX;
this.minY = minY;
this.maxX = maxX;
this.maxY = maxY;
_bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream));
write(_bufferedWriter);
}
/**
* Returns the title of the EPS document.
*/
public synchronized String getTitle() {
return _title;
}
/**
* Updates the bounds of the current EPS document.
*/
public synchronized void updateBounds(double x, double y) {
if (x > maxX) {
maxX = (float) x;
}
if (x < minX) {
minX = (float) x;
}
if (y > maxY) {
maxY = (float) y;
}
if (y < minY) {
minY = (float) y;
}
}
/**
* Appends a line to the EpsDocument. A new line character is added
* to the end of the line when it is added.
*/
public synchronized void append(EpsGraphics2D g, String line) {
if (_lastG == null) {
_lastG = g;
}
else if (g != _lastG) {
EpsGraphics2D lastG = _lastG;
_lastG = g;
// We are being drawn on with a different EpsGraphics2D context.
// We may need to update the clip, etc from this new context.
if (g.getClip() != lastG.getClip()) {
g.setClip(g.getClip());
}
if (!g.getColor().equals(lastG.getColor())) {
g.setColor(g.getColor());
}
if (!g.getBackground().equals(lastG.getBackground())) {
g.setBackground(g.getBackground());
}
// We don't need this, as this only affects the stroke and font,
// which are dealt with separately later on.
//if (!g.getTransform().equals(lastG.getTransform())) {
// g.setTransform(g.getTransform());
//}
if (!g.getPaint().equals(lastG.getPaint())) {
g.setPaint(g.getPaint());
}
if (!g.getComposite().equals(lastG.getComposite())) {
g.setComposite(g.getComposite());
}
if (!g.getComposite().equals(lastG.getComposite())) {
g.setComposite(g.getComposite());
}
if (!g.getFont().equals(lastG.getFont())) {
g.setFont(g.getFont());
}
if (!g.getStroke().equals(lastG.getStroke())) {
g.setStroke(g.getStroke());
}
}
_lastG = g;
try {
_bufferedWriter.write(line + "\n");
}
catch (IOException e) {
throw new EpsException("Could not write to the output file: " + e);
}
}
/**
* Outputs the contents of the EPS document to the specified
* Writer, complete with headers and bounding box.
*/
public synchronized void write(Writer writer) throws IOException {
float offsetX = -minX;
float offsetY = -minY;
writer.write("%!PS-Adobe-3.0 EPSF-3.0\n");
writer.write("%%Creator: EpsGraphics2D " + EpsGraphics2D.VERSION + " by Paul Mutton, http://www.jibble.org/\n");
writer.write("%%Title: " + _title + "\n");
writer.write("%%CreationDate: " + new Date() + "\n");
writer.write("%%BoundingBox: 0 0 " + ((int) Math.ceil(maxX + offsetX)) + " " + ((int) Math.ceil(maxY + offsetY)) + "\n");
writer.write("%%DocumentData: Clean7Bit\n");
writer.write("%%DocumentProcessColors: Black\n");
writer.write("%%ColorUsage: Color\n");
writer.write("%%Origin: 0 0\n");
writer.write("%%Pages: 1\n");
writer.write("%%Page: 1 1\n");
writer.write("%%EndComments\n\n");
writer.write("gsave\n");
if (_stringWriter != null) {
writer.write(offsetX + " " + (offsetY) + " translate\n");
_bufferedWriter.flush();
StringBuffer buffer = _stringWriter.getBuffer();
for (int i = 0; i < buffer.length(); i++) {
writer.write(buffer.charAt(i));
}
writeFooter(writer);
}
else {
writer.write(offsetX + " " + ((maxY - minY) - offsetY) + " translate\n");
}
writer.flush();
}
private void writeFooter(Writer writer) throws IOException {
writer.write("grestore\n");
if (isClipSet()) {
writer.write("grestore\n");
}
writer.write("showpage\n");
writer.write("\n");
writer.write("%%EOF");
writer.flush();
}
public synchronized void flush() throws IOException {
_bufferedWriter.flush();
}
public synchronized void close() throws IOException {
if (_stringWriter == null) {
writeFooter(_bufferedWriter);
_bufferedWriter.flush();
_bufferedWriter.close();
}
}
public boolean isClipSet() {
return _isClipSet;
}
public void setClipSet(boolean isClipSet) {
_isClipSet = isClipSet;
}
private float minX;
private float minY;
private float maxX;
private float maxY;
private boolean _isClipSet = false;
private String _title;
private StringWriter _stringWriter;
private BufferedWriter _bufferedWriter = null;
// We need to remember which was the last EpsGraphics2D object to use
// us, as we need to replace the clipping region if another EpsGraphics2D
// object tries to use us.
private EpsGraphics2D _lastG = null;
}