From 6025b6016517c6d898d8957d1d7e03ba71431912 Mon Sep 17 00:00:00 2001 From: tknall Date: Fri, 1 Dec 2006 12:20:24 +0000 Subject: Initial import of release 2.2. git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@4 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c --- src/main/java/com/lowagie/text/pdf/PdfLine.java | 477 ++++++++++++++++++++++++ 1 file changed, 477 insertions(+) create mode 100644 src/main/java/com/lowagie/text/pdf/PdfLine.java (limited to 'src/main/java/com/lowagie/text/pdf/PdfLine.java') diff --git a/src/main/java/com/lowagie/text/pdf/PdfLine.java b/src/main/java/com/lowagie/text/pdf/PdfLine.java new file mode 100644 index 0000000..8ccd84a --- /dev/null +++ b/src/main/java/com/lowagie/text/pdf/PdfLine.java @@ -0,0 +1,477 @@ +/* + * $Id: PdfLine.java,v 1.66 2006/01/18 20:35:48 psoares33 Exp $ + * $Name: $ + * + * Copyright 1999, 2000, 2001, 2002 Bruno Lowagie + * + * The contents of this file are subject to the Mozilla Public License Version 1.1 + * (the "License"); you may not use this file except in compliance with the License. + * You may obtain a copy of the License at http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the License. + * + * The Original Code is 'iText, a free JAVA-PDF library'. + * + * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by + * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie. + * All Rights Reserved. + * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer + * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved. + * + * Contributor(s): all the names of the contributors are added in the source code + * where applicable. + * + * Alternatively, the contents of this file may be used under the terms of the + * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the + * provisions of LGPL are applicable instead of those above. If you wish to + * allow use of your version of this file only under the terms of the LGPL + * License and not to allow others to use your version of this file under + * the MPL, indicate your decision by deleting the provisions above and + * replace them with the notice and other provisions required by the LGPL. + * If you do not delete the provisions above, a recipient may use your version + * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE. + * + * This library is free software; you can redistribute it and/or modify it + * under the terms of the MPL as stated above or under the terms of the GNU + * Library General Public License as published by the Free Software Foundation; + * either version 2 of the License, or 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 Library general Public License for more + * details. + * + * If you didn't download this code from the following link, you should check if + * you aren't using an obsolete version: + * http://www.lowagie.com/iText/ + */ + +package com.lowagie.text.pdf; + +import java.util.ArrayList; +import java.util.Iterator; + +import com.lowagie.text.Element; +import com.lowagie.text.ListItem; +import com.lowagie.text.Chunk; + +/** + * PdfLine defines an array with PdfChunk-objects + * that fit into 1 line. + */ + +public class PdfLine { + + // membervariables + + /** The arraylist containing the chunks. */ + protected ArrayList line; + + /** The left indentation of the line. */ + protected float left; + + /** The width of the line. */ + protected float width; + + /** The alignment of the line. */ + protected int alignment; + + /** The heigth of the line. */ + protected float height; + + /** The listsymbol (if necessary). */ + protected Chunk listSymbol = null; + + /** The listsymbol (if necessary). */ + protected float symbolIndent; + + /** true if the chunk splitting was caused by a newline. */ + protected boolean newlineSplit = false; + + /** The original width. */ + protected float originalWidth; + + protected boolean isRTL = false; + + // constructors + + /** + * Constructs a new PdfLine-object. + * + * @param left the limit of the line at the left + * @param right the limit of the line at the right + * @param alignment the alignment of the line + * @param height the height of the line + */ + + PdfLine(float left, float right, int alignment, float height) { + this.left = left; + this.width = right - left; + this.originalWidth = this.width; + this.alignment = alignment; + this.height = height; + this.line = new ArrayList(); + } + + PdfLine(float left, float remainingWidth, int alignment, boolean newlineSplit, ArrayList line, boolean isRTL) { + this.left = left; + this.width = remainingWidth; + this.alignment = alignment; + this.line = line; + this.newlineSplit = newlineSplit; + this.isRTL = isRTL; + } + + // methods + + /** + * Adds a PdfChunk to the PdfLine. + * + * @param chunk the PdfChunk to add + * @return null if the chunk could be added completely; if not + * a PdfChunk containing the part of the chunk that could + * not be added is returned + */ + + PdfChunk add(PdfChunk chunk) { + // nothing happens if the chunk is null. + if (chunk == null || chunk.toString().equals("")) { + return null; + } + + // we split the chunk to be added + PdfChunk overflow = chunk.split(width); + newlineSplit = (chunk.isNewlineSplit() || overflow == null); + // if (chunk.isNewlineSplit() && alignment == Element.ALIGN_JUSTIFIED) + // alignment = Element.ALIGN_LEFT; + + + // if the length of the chunk > 0 we add it to the line + if (chunk.length() > 0) { + if (overflow != null) + chunk.trimLastSpace(); + width -= chunk.width(); + line.add(chunk); + } + + // if the length == 0 and there were no other chunks added to the line yet, + // we risk to end up in an endless loop trying endlessly to add the same chunk + else if (line.size() < 1) { + chunk = overflow; + overflow = chunk.truncate(width); + width -= chunk.width(); + if (chunk.length() > 0) { + line.add(chunk); + return overflow; + } + // if the chunck couldn't even be truncated, we add everything, so be it + else { + if (overflow != null) + line.add(overflow); + return null; + } + } + else { + width += ((PdfChunk)(line.get(line.size() - 1))).trimLastSpace(); + } + return overflow; + } + + // methods to retrieve information + + /** + * Returns the number of chunks in the line. + * + * @return a value + */ + + public int size() { + return line.size(); + } + + /** + * Returns an iterator of PdfChunks. + * + * @return an Iterator + */ + + public Iterator iterator() { + return line.iterator(); + } + + /** + * Returns the height of the line. + * + * @return a value + */ + + float height() { + return height; + } + + /** + * Returns the left indentation of the line taking the alignment of the line into account. + * + * @return a value + */ + + float indentLeft() { + if (isRTL) { + switch (alignment) { + case Element.ALIGN_LEFT: + return left + width; + case Element.ALIGN_CENTER: + return left + (width / 2f); + default: + return left; + } + } + else { + switch (alignment) { + case Element.ALIGN_RIGHT: + return left + width; + case Element.ALIGN_CENTER: + return left + (width / 2f); + default: + return left; + } + } + } + + /** + * Checks if this line has to be justified. + * + * @return true if the alignment equals ALIGN_JUSTIFIED and there is some width left. + */ + + public boolean hasToBeJustified() { + return ((alignment == Element.ALIGN_JUSTIFIED || alignment == Element.ALIGN_JUSTIFIED_ALL) && width != 0); + } + + /** + * Resets the alignment of this line. + *

+ * The alignment of the last line of for instance a Paragraph + * that has to be justified, has to be reset to ALIGN_LEFT. + */ + + public void resetAlignment() { + if (alignment == Element.ALIGN_JUSTIFIED) { + alignment = Element.ALIGN_LEFT; + } + } + + /** + * Returns the width that is left, after a maximum of characters is added to the line. + * + * @return a value + */ + + float widthLeft() { + return width; + } + + /** + * Returns the number of space-characters in this line. + * + * @return a value + */ + + int numberOfSpaces() { + String string = toString(); + int length = string.length(); + int numberOfSpaces = 0; + for (int i = 0; i < length; i++) { + if (string.charAt(i) == ' ') { + numberOfSpaces++; + } + } + return numberOfSpaces; + } + + /** + * Sets the listsymbol of this line. + *

+ * This is only necessary for the first line of a ListItem. + * + * @param listItem the list symbol + */ + + public void setListItem(ListItem listItem) { + this.listSymbol = listItem.listSymbol(); + this.symbolIndent = listItem.indentationLeft(); + } + + /** + * Returns the listsymbol of this line. + * + * @return a PdfChunk if the line has a listsymbol; null otherwise + */ + + public Chunk listSymbol() { + return listSymbol; + } + + /** + * Return the indentation needed to show the listsymbol. + * + * @return a value + */ + + public float listIndent() { + return symbolIndent; + } + + /** + * Get the string representation of what is in this line. + * + * @return a String + */ + + public String toString() { + StringBuffer tmp = new StringBuffer(); + for (Iterator i = line.iterator(); i.hasNext(); ) { + tmp.append(((PdfChunk) i.next()).toString()); + } + return tmp.toString(); + } + + /** + * Checks if a newline caused the line split. + * @return true if a newline caused the line split + */ + public boolean isNewlineSplit() { + return newlineSplit && (alignment != Element.ALIGN_JUSTIFIED_ALL); + } + + /** + * Gets the index of the last PdfChunk with metric attributes + * @return the last PdfChunk with metric attributes + */ + public int getLastStrokeChunk() { + int lastIdx = line.size() - 1; + for (; lastIdx >= 0; --lastIdx) { + PdfChunk chunk = (PdfChunk)line.get(lastIdx); + if (chunk.isStroked()) + break; + } + return lastIdx; + } + + /** + * Gets a PdfChunk by index. + * @param idx the index + * @return the PdfChunk or null if beyond the array + */ + public PdfChunk getChunk(int idx) { + if (idx < 0 || idx >= line.size()) + return null; + return (PdfChunk)line.get(idx); + } + + /** + * Gets the original width of the line. + * @return the original width of the line + */ + public float getOriginalWidth() { + return originalWidth; + } + + /** + * Gets the maximum size of all the fonts used in this line + * including images (if there are images in the line and if + * the leading has to be changed). + * @return maximum size of all the fonts used in this line + */ + float getMaxSize() { + float maxSize = 0; + for (int k = 0; k < line.size(); ++k) { + PdfChunk chunk = (PdfChunk)line.get(k); + if (!chunk.isImage() || !chunk.changeLeading()) { + maxSize = Math.max(chunk.font().size(), maxSize); + } + else { + maxSize = Math.max(chunk.getImage().scaledHeight() + chunk.getImageOffsetY() , maxSize); + } + } + return maxSize; + } + + /** + * Gets the maximum size of all the fonts used in this line + * including images. + * @return maximum size of all the fonts used in this line + */ + float getMaxSizeSimple() { + float maxSize = 0; + for (int k = 0; k < line.size(); ++k) { + PdfChunk chunk = (PdfChunk)line.get(k); + if (!chunk.isImage()) { + maxSize = Math.max(chunk.font().size(), maxSize); + } + else { + maxSize = Math.max(chunk.getImage().scaledHeight() + chunk.getImageOffsetY() , maxSize); + } + } + return maxSize; + } + + boolean isRTL() { + return isRTL; + } + + /** + * Gets a width corrected with a charSpacing and wordSpacing. + * @param charSpacing + * @param wordSpacing + * @return a corrected width + */ + public float getWidthCorrected(float charSpacing, float wordSpacing) { + float total = 0; + for (int k = 0; k < line.size(); ++k) { + PdfChunk ck = (PdfChunk)line.get(k); + total += ck.getWidthCorrected(charSpacing, wordSpacing); + } + return total; + } + +/** + * Gets the maximum size of the ascender for all the fonts used + * in this line. + * @return maximum size of all the ascenders used in this line + */ + public float getAscender() { + float ascender = 0; + for (int k = 0; k < line.size(); ++k) { + PdfChunk ck = (PdfChunk)line.get(k); + if (ck.isImage()) + ascender = Math.max(ascender, ck.getImage().scaledHeight() + ck.getImageOffsetY()); + else { + PdfFont font = ck.font(); + ascender = Math.max(ascender, font.getFont().getFontDescriptor(BaseFont.ASCENT, font.size())); + } + } + return ascender; + } + +/** + * Gets the biggest descender for all the fonts used + * in this line. Note that this is a negative number. + * @return maximum size of all the ascenders used in this line + */ + public float getDescender() { + float descender = 0; + for (int k = 0; k < line.size(); ++k) { + PdfChunk ck = (PdfChunk)line.get(k); + if (ck.isImage()) + descender = Math.min(descender, ck.getImageOffsetY()); + else { + PdfFont font = ck.font(); + descender = Math.min(descender, font.getFont().getFontDescriptor(BaseFont.DESCENT, font.size())); + } + } + return descender; + } +} \ No newline at end of file -- cgit v1.2.3