/** * Splits this <CODE>PdfChunk</CODE> if it's too long for the given width. * <P> * Returns <VAR>null</VAR> if the <CODE>PdfChunk</CODE> wasn't truncated. * * @param width a given width * @return the <CODE>PdfChunk</CODE> that doesn't fit into the width. */ internal PdfChunk split(float width) { newlineSplit = false; if (image != null) { if (image.ScaledWidth > width) { PdfChunk pc = new PdfChunk(Chunk.OBJECT_REPLACEMENT_CHARACTER, this); value = ""; attributes = new Hashmap(); image = null; font = new PdfFont(PdfFont.HELVETICA, 12); return(pc); } else { return(null); } } IHyphenationEvent hyphenationEvent = (IHyphenationEvent)noStroke[Chunk.HYPHENATION]; int currentPosition = 0; int splitPosition = -1; float currentWidth = 0; // loop over all the characters of a string // or until the totalWidth is reached int lastSpace = -1; float lastSpaceWidth = 0; int length = value.Length; char character = (char)0; BaseFont ft = font.Font; if (ft.FontType == BaseFont.FONT_TYPE_CJK && ft.getUnicodeEquivalent(' ') != ' ') { while (currentPosition < length) { // the width of every character is added to the currentWidth char cidChar = value[currentPosition]; character = ft.getUnicodeEquivalent(cidChar); // if a newLine or carriageReturn is encountered if (character == '\n') { newlineSplit = true; string returnValue = value.Substring(currentPosition + 1); value = value.Substring(0, currentPosition); if (value.Length < 1) { value = "\u0001"; } PdfChunk pc = new PdfChunk(returnValue, this); return(pc); } currentWidth += font.width(cidChar); if (character == ' ') { lastSpace = currentPosition + 1; lastSpaceWidth = currentWidth; } if (currentWidth > width) { break; } // if a split-character is encountered, the splitPosition is altered if (splitCharacter.isSplitCharacter(character)) { splitPosition = currentPosition + 1; } currentPosition++; } } else { while (currentPosition < length) { // the width of every character is added to the currentWidth character = value[currentPosition]; // if a newLine or carriageReturn is encountered if (character == '\r' || character == '\n') { newlineSplit = true; int inc = 1; if (character == '\r' && currentPosition + 1 < length && value[currentPosition + 1] == '\n') { inc = 2; } string returnValue = value.Substring(currentPosition + inc); value = value.Substring(0, currentPosition); if (value.Length < 1) { value = " "; } PdfChunk pc = new PdfChunk(returnValue, this); return(pc); } currentWidth += font.width(character); if (character == ' ') { lastSpace = currentPosition + 1; lastSpaceWidth = currentWidth; } if (currentWidth > width) { break; } // if a split-character is encountered, the splitPosition is altered if (splitCharacter.isSplitCharacter(character)) { splitPosition = currentPosition + 1; } currentPosition++; } } // if all the characters fit in the total width, null is returned (there is no overflow) if (currentPosition == length) { return(null); } // otherwise, the string has to be truncated if (splitPosition < 0) { string returnValue = value; value = ""; PdfChunk pc = new PdfChunk(returnValue, this); return(pc); } if (lastSpace > splitPosition && splitCharacter.isSplitCharacter(' ')) { splitPosition = lastSpace; } if (hyphenationEvent != null && lastSpace < currentPosition) { int wordIdx = getWord(value, lastSpace); if (wordIdx > lastSpace) { string pre = hyphenationEvent.getHyphenatedWordPre(value.Substring(lastSpace, wordIdx - lastSpace), font.Font, font.Size, width - lastSpaceWidth); string post = hyphenationEvent.HyphenatedWordPost; if (post.Length > 0) { string returnValue = post + value.Substring(wordIdx); value = trim(value.Substring(0, lastSpace) + pre); PdfChunk pc = new PdfChunk(returnValue, this); return(pc); } } } string retVal = value.Substring(splitPosition); value = trim(value.Substring(0, splitPosition)); PdfChunk tmp = new PdfChunk(retVal, this); return(tmp); }