+++ /dev/null
-/* $RCSfile$
- * $Author: hansonr $
- * $Date: 2009-06-30 18:58:33 -0500 (Tue, 30 Jun 2009) $
- * $Revision: 11158 $
- *
- * Some portions of this file have been modified by Robert Hanson hansonr.at.stolaf.edu 2012-2017
- * for use in SwingJS via transpilation into JavaScript using Java2Script.
- *
- * Copyright (C) 2002-2005 The Jmol Development Team
- *
- * Contact: jmol-developers@lists.sf.net
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-package javajs.export;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import java.util.Hashtable;
-import java.util.Map;
-import java.util.Map.Entry;
-
-import javajs.util.Lst;
-import javajs.util.SB;
-
-
-
-public class PDFCreator {
-
- private OutputStream os;
- private Lst<PDFObject> indirectObjects;
- private PDFObject root;
- private PDFObject graphics;
-// private PDFObject pageResources;
-// private PDFObject graphicsResources;
-
- private int pt;
- private int xrefPt;
- private int count;
-
- private int height;
- private int width;
-
- private Map<String, PDFObject>fonts;
-
- public PDFCreator() {
- // for Class.forName
- }
-
- public void setOutputStream(OutputStream os) {
- this.os = os;
- }
-
- public void newDocument(int paperWidth, int paperHeight, boolean isLandscape) {
- width = (isLandscape ? paperHeight : paperWidth);
- height = (isLandscape ? paperWidth : paperHeight);
- System.out.println("Creating PDF with width=" + width + " and height=" + height);
- fonts = new Hashtable<String, PDFObject>();
- indirectObjects = new Lst<PDFObject>();
- //graphicsResources = newObject(null);
- //pageResources = newObject(null); // will set this to compressed stream later
- root = newObject("Catalog");
- PDFObject pages = newObject("Pages");
- PDFObject page = newObject("Page");
- PDFObject pageContents = newObject(null);
- graphics = newObject("XObject");
-
- root.addDef("Pages", pages.getRef());
- pages.addDef("Count", "1");
- pages.addDef("Kids", "[ " + page.getRef() +" ]");
- page.addDef("Parent", pages.getRef());
- page.addDef("MediaBox", "[ 0 0 " + paperWidth + " " + paperHeight + " ]");
- if (isLandscape)
- page.addDef("Rotate", "90");
-
- pageContents.addDef("Length", "?");
- pageContents.append((isLandscape ? "q 0 1 1 0 0 0 " : "q 1 0 0 -1 0 "+(paperHeight))+" cm /" + graphics.getID() + " Do Q");
- page.addDef("Contents", pageContents.getRef());
- addProcSet(page);
- addProcSet(graphics);
- // will add fonts as well as they are needed
- graphics.addDef("Subtype", "/Form");
- graphics.addDef("FormType", "1");
- graphics.addDef("BBox", "[0 0 " + width + " " + height + "]");
- graphics.addDef("Matrix", "[1 0 0 1 0 0]");
- graphics.addDef("Length", "?");
- page.addResource("XObject", graphics.getID(), graphics.getRef());
- g("q 1 w 1 J 1 j 10 M []0 d q "); // line width 1, line cap circle, line join circle, miter limit 10, solid
- clip(0, 0, width, height);
- }
-
- private void addProcSet(PDFObject o) {
- o.addResource(null, "ProcSet", "[/PDF /Text /ImageB /ImageC /ImageI]");
- }
-
- private void clip(int x1, int y1, int x2, int y2) {
- moveto(x1, y1);
- lineto(x2, y1);
- lineto(x2, y2);
- lineto(x1, y2);
- g("h W n");
- }
-
- public void moveto(int x, int y) {
- g(x + " " + y + " m");
- }
-
- public void lineto(int x, int y) {
- g(x + " " + y + " l");
- }
-
- private PDFObject newObject(String type) {
- PDFObject o = new PDFObject(++count);
- if (type != null)
- o.addDef("Type", "/" + type);
- indirectObjects.addLast(o);
- return o;
- }
-
- public void addInfo(Map<String, String> data) {
- Hashtable<String, Object> info = new Hashtable<String, Object>();
- for (Entry<String, String> e: data.entrySet()) {
- String value = "(" + e.getValue().replace(')','_').replace('(','_')+ ")";
- info.put(e.getKey(), value);
- }
- root.addDef("Info", info);
- }
-
- private PDFObject addFontResource(String fname) {
- PDFObject f = newObject("Font");
- fonts.put(fname, f);
- f.addDef("BaseFont", fname);
- f.addDef("Encoding", "/WinAnsiEncoding");
- f.addDef("Subtype", "/Type1");
- graphics.addResource("Font", f.getID(), f.getRef());
- return f;
- }
-
- private Map<Object, PDFObject> images;
-
- public void addImageResource(Object newImage, int width, int height, int[] buffer, boolean isRGB) {
- PDFObject imageObj = newObject("XObject");
- if (images == null)
- images = new Hashtable<Object, PDFObject>();
- images.put(newImage, imageObj);
- imageObj.addDef("Subtype", "/Image");
- imageObj.addDef("Length", "?");
- imageObj.addDef("ColorSpace", isRGB ? "/DeviceRGB" : "/DeviceGray");
- imageObj.addDef("BitsPerComponent", "8");
- imageObj.addDef("Width", "" + width);
- imageObj.addDef("Height", "" + height);
- graphics.addResource("XObject", imageObj.getID(), imageObj.getRef());
- int n = buffer.length;
- byte[] stream = new byte[n * (isRGB ? 3 : 1)];
- if (isRGB) {
- for (int i = 0, pt = 0; i < n; i++) {
- stream[pt++] = (byte) ((buffer[i] >> 16) & 0xFF);
- stream[pt++] = (byte) ((buffer[i] >> 8) & 0xFF);
- stream[pt++] = (byte) (buffer[i] & 0xFF);
- }
- } else {
- for (int i = 0; i < n; i++)
- stream[i] = (byte) buffer[i];
- }
- imageObj.setStream(stream);
- graphics.addResource("XObject", imageObj.getID(), imageObj.getRef());
- }
-
- public void g(String cmd) {
- graphics.append(cmd).appendC('\n');
- }
-
- private void output(String s) throws IOException {
- byte[] b = s.getBytes();
- os.write(b, 0, b.length);
- pt += b.length;
- }
-
- public void closeDocument() throws IOException {
- g("Q Q");
- outputHeader();
- writeObjects();
- writeXRefTable();
- writeTrailer();
- os.flush();
- os.close();
- }
-
- private void outputHeader() throws IOException {
- output("%PDF-1.3\n%");
- byte[] b = new byte[] {-1, -1, -1, -1};
- os.write(b, 0, b.length);
- pt += 4;
- output("\n");
- }
-
- private void writeTrailer() throws IOException {
- PDFObject trailer = new PDFObject(-2);
- output("trailer");
- trailer.addDef("Size", "" + indirectObjects.size());
- trailer.addDef("Root", root.getRef());
- trailer.output(os);
- output("startxref\n");
- output("" + xrefPt + "\n");
- output("%%EOF\n");
- }
-
- /**
- * Write Font objects first.
- *
- * @throws IOException
- */
- private void writeObjects() throws IOException {
- int nObj = indirectObjects.size();
- for (int i = 0; i < nObj; i++) {
- PDFObject o = indirectObjects.get(i);
- if (!o.isFont())
- continue;
- o.pt = pt;
- pt += o.output(os);
- }
- for (int i = 0; i < nObj; i++) {
- PDFObject o = indirectObjects.get(i);
- if (o.isFont())
- continue;
- o.pt = pt;
- pt += o.output(os);
- }
- }
-
- private void writeXRefTable() throws IOException {
- xrefPt = pt;
- int nObj = indirectObjects.size();
- SB sb = new SB();
- // note trailing space, needed because \n is just one character
- sb.append("xref\n0 " + (nObj + 1)
- + "\n0000000000 65535 f\r\n");
- for (int i = 0; i < nObj; i++) {
- PDFObject o = indirectObjects.get(i);
- String s = "0000000000" + o.pt;
- sb.append(s.substring(s.length() - 10));
- sb.append(" 00000 n\r\n");
- }
- output(sb.toString());
- }
-
- public boolean canDoLineTo() {
- return true;
- }
-
- public void fill() {
- g("f");
- }
-
- public void stroke() {
- g("S");
- }
-
- public void doCircle(int x, int y, int r, boolean doFill) {
- double d = r*4*(Math.sqrt(2)-1)/3;
- double dx = x;
- double dy = y;
- g((dx + r) + " " + dy + " m");
- g((dx + r) + " " + (dy + d) + " " + (dx + d) + " " + (dy + r) + " " + (dx) + " " + (dy + r) + " " + " c");
- g((dx - d) + " " + (dy + r) + " " + (dx - r) + " " + (dy + d) + " " + (dx - r) + " " + (dy) + " c");
- g((dx - r) + " " + (dy - d) + " " + (dx - d) + " " + (dy - r) + " " + (dx) + " " + (dy - r) + " c");
- g((dx + d) + " " + (dy - r) + " " + (dx + r) + " " + (dy - d) + " " + (dx + r) + " " + (dy) + " c");
- g(doFill ? "f" : "s");
- }
-
- public void doPolygon(int[] axPoints, int[] ayPoints, int nPoints, boolean doFill) {
- moveto(axPoints[0], ayPoints[0]);
- for (int i = 1; i < nPoints; i++)
- lineto(axPoints[i], ayPoints[i]);
- g(doFill ? "f" : "s");
- }
-
- public void doRect(int x, int y, int width, int height, boolean doFill) {
- g(x + " " + y + " " + width + " " + height + " re " + (doFill ? "f" : "s"));
- }
-
- public void drawImage(Object image, int destX0, int destY0,
- int destX1, int destY1, int srcX0, int srcY0, int srcX1, int srcY1) {
- PDFObject imageObj = images.get(image);
- if (imageObj == null)
- return;
- g("q");
- clip(destX0, destY0, destX1, destY1);
- double iw = Double.parseDouble((String) imageObj.getDef("Width"));
- double ih = Double.parseDouble((String) imageObj.getDef("Height"));
- double dw = (destX1 - destX0 + 1);
- double dh = (destY1 - destY0 + 1);
- double sw = (srcX1 - srcX0 + 1);
- double sh = (srcY1 - srcY0 + 1);
- double scaleX = dw / sw;
- double scaleY = dh / sh;
- double transX = destX0 - srcX0 * scaleX;
- double transY = destY0 + (ih - srcY0) * scaleY;
- g(scaleX*iw + " 0 0 " + -scaleY*ih + " " + transX + " " + transY + " cm");
- g("/" + imageObj.getID() + " Do");
- g("Q");
- }
-
- public void drawStringRotated(String s, int x, int y, int angle) {
- g("q " + getRotation(angle) + " " + x + " " + y
- + " cm BT(" + s + ")Tj ET Q");
- }
-
- public String getRotation(int angle) {
- float cos = 0, sin = 0;
- switch (angle) {
- case 0:
- cos = 1;
- break;
- case 90:
- sin = 1;
- break;
- case -90:
- sin = -1;
- break;
- case 180:
- cos = -1;
- break;
- default:
- float a = (float) (angle * (Math.PI / 180));
- cos = (float) Math.cos(a);
- sin = (float) Math.sin(a);
- if (Math.abs(cos) < 0.0001)
- cos = 0;
- if (Math.abs(sin) < 0.0001)
- sin = 0;
- }
- return cos + " " + sin + " " + sin + " " + -cos;
- }
-
- public void setColor(float[] rgb, boolean isFill) {
- g(rgb[0] + " " + rgb[1] + " " + rgb[2] + (isFill ? " rg" : " RG"));
- }
-
- public void setFont(String fname, float size) {
- PDFObject f = fonts.get(fname);
- if (f == null)
- f = addFontResource(fname);
- g("/" + f.getID() + " " + size + " Tf");
- }
-
- public void setLineWidth(float width) {
- g(width + " w");
- }
-
- public void translateScale(float x, float y, float scale) {
- g(scale + " 0 0 " + scale + " " + x + " " + y + " cm");
- }
-
-}
git://source.jalview.org / jalview.git / blobdiff