Java tutorial
/******************************************************************************* * Copyright (c) 2012 Daniel Alder. * All rights reserved. This program and the accompanying materials * are made available under the terms of the GNU Public License v3.0 * which accompanies this distribution, and is available at * http://www.gnu.org/licenses/gpl.html * * Contributors: * Daniel Alder - initial API and implementation ******************************************************************************/ package org.alder.fotobuchconvert.scribus; import java.awt.Color; import java.io.CharArrayReader; import java.io.IOException; import javax.swing.text.AttributeSet; import javax.swing.text.BadLocationException; import javax.swing.text.DefaultStyledDocument; import javax.swing.text.Element; import javax.swing.text.StyleConstants; import javax.swing.text.rtf.RTFEditorKit; import org.alder.fotobuchconvert.tools.XmlBuilder; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; public class RtfToScribusConverter { protected final Log log = LogFactory.getLog(RtfToScribusConverter.class); public void convert(XmlBuilder xml, String input, ScribusWriter scribus) throws IOException, BadLocationException { if (input == null) return; log.debug("RTF input: " + input); CharArrayReader rd = new CharArrayReader(input.toCharArray()); RTFEditorKit kit = new RTFEditorKit(); DefaultStyledDocument doc = (DefaultStyledDocument) kit.createDefaultDocument(); kit.read(rd, doc, 0); output(xml, doc, scribus); } void output(XmlBuilder xml, DefaultStyledDocument doc, ScribusWriter scribus) { log.debug("Starting conversion of RTF data"); if (log.isTraceEnabled()) doc.dump(System.err); try { Element section = doc.getDefaultRootElement(); log.trace(section); assert section.getName().equals("section"); final int nj = section.getElementCount(); for (int j = 0; j < nj; j++) { Element paragraph = section.getElement(j); log.trace(paragraph); assert section.getName().equals("paragraph"); // boolean firstInPara = true; AttributeSet attr = paragraph.getAttributes(); Integer alignment = (Integer) attr.getAttribute(StyleConstants.Alignment); boolean elementsInThisLine = false; final int ni = paragraph.getElementCount(); for (int i = 0; i < ni; i++) { Element content = paragraph.getElement(i); assert section.getName().equals("content"); int start = content.getStartOffset(); int end = content.getEndOffset(); attr = content.getAttributes(); Boolean italic = (Boolean) attr.getAttribute(StyleConstants.Italic); Boolean bold = (Boolean) attr.getAttribute(StyleConstants.Bold); Boolean underline = (Boolean) attr.getAttribute(StyleConstants.Underline); String family = (String) attr.getAttribute(StyleConstants.Family); Integer fontSize = (Integer) attr.getAttribute(StyleConstants.Size); Color color = (Color) attr.getAttribute(StyleConstants.ColorConstants.Foreground); String text = doc.getText(start, end - start); // if (firstInPara && text.trim().isEmpty() && family == // null // && fontSize == null) // continue; // else // firstInPara = false; if (i == ni - 1 && text.trim().isEmpty() && text.length() < 3) continue; elementsInThisLine = true; while (text.endsWith("\n") || text.endsWith("\r")) text = text.substring(0, text.length() - 1); log.debug(italic + " " + bold + " " + underline + " " + family + " " + fontSize + " " + color + "\t\"" + text + "\""); XmlBuilder el = xml.add(C.EL_ITEXT).set(C.CH, text); if (bold == Boolean.TRUE && italic == Boolean.TRUE) el.set(C.FONT, family + " Bold Italic"); else if (bold == Boolean.TRUE) el.set(C.FONT, family + " Bold"); else if (italic == Boolean.TRUE) el.set(C.FONT, family + " Italic"); else el.set(C.FONT, family + " Regular"); if (fontSize != null) el.set(C.FONTSIZE, fontSize); if (color != null && color.equals(Color.BLACK) && scribus != null) { String colname = scribus.colorManager.getColorName(color); el.set(C.FCOLOR, colname); } } if (!elementsInThisLine && j == nj - 1) break; // don't convert last line if empty XmlBuilder el = xml.add(C.EL_PARA); if (alignment != null) switch (alignment) { case StyleConstants.ALIGN_LEFT: el.set(C.ALIGN, 0); break; case StyleConstants.ALIGN_CENTER: el.set(C.ALIGN, 1); break; case StyleConstants.ALIGN_RIGHT: el.set(C.ALIGN, 2); break; case StyleConstants.ALIGN_JUSTIFIED: el.set(C.ALIGN, 3); break; } } } catch (BadLocationException e) { throw new RuntimeException("This error should not occour", e); } } }