/**
* Truncates 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.
*/
PdfChunk truncate(float width) {
if (image != null) {
if (image.getScaledWidth() > width) {
PdfChunk pc = new PdfChunk("", this);
value = "";
attributes.remove(Chunk.IMAGE);
image = null;
font = PdfFont.getDefaultFont();
return pc;
} else return null;
}
int currentPosition = 0;
float currentWidth = 0;
// it's no use trying to split if there isn't even enough place for a space
if (width < font.width()) {
String returnValue = value.substring(1);
value = value.substring(0, 1);
PdfChunk pc = new PdfChunk(returnValue, this);
return pc;
}
// loop over all the characters of a string
// or until the totalWidth is reached
int length = value.length();
boolean surrogate = false;
char character;
while (currentPosition < length) {
// the width of every character is added to the currentWidth
surrogate = Utilities.isSurrogatePair(value, currentPosition);
if (surrogate) currentWidth += font.width(Utilities.convertToUtf32(value, currentPosition));
else currentWidth += font.width(value.charAt(currentPosition));
if (currentWidth > width) break;
if (surrogate) currentPosition++;
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
// currentPosition -= 2;
// we have to chop off minimum 1 character from the chunk
if (currentPosition == 0) {
currentPosition = 1;
if (surrogate) ++currentPosition;
}
String returnValue = value.substring(currentPosition);
value = value.substring(0, currentPosition);
PdfChunk pc = new PdfChunk(returnValue, this);
return pc;
}
public float trimFirstSpace() {
BaseFont ft = font.getFont();
if (ft.getFontType() == BaseFont.FONT_TYPE_CJK && ft.getUnicodeEquivalent(' ') != ' ') {
if (value.length() > 1 && value.startsWith("\u0001")) {
value = value.substring(1);
return font.width('\u0001');
}
} else {
if (value.length() > 1 && value.startsWith(" ")) {
value = value.substring(1);
return font.width(' ');
}
}
return 0;
}
/**
* Compares this <CODE>PdfFont</CODE> with another
*
* @param object the other <CODE>PdfFont</CODE>
* @return a value
*/
public int compareTo(Object object) {
if (image != null) return 0;
if (object == null) {
return -1;
}
PdfFont pdfFont;
try {
pdfFont = (PdfFont) object;
if (font != pdfFont.font) {
return 1;
}
if (this.size() != pdfFont.size()) {
return 2;
}
return 0;
} catch (ClassCastException cce) {
return -2;
}
}
/**
* Removes all the <VAR>' '</VAR> and <VAR>'-'</VAR>-characters on the right of a <CODE>String</CODE>.
* <P>
* @param string the <CODE>String<CODE> that has to be trimmed.
* @return the trimmed <CODE>String</CODE>
*/
String trim(String string) {
BaseFont ft = font.getFont();
if (ft.getFontType() == BaseFont.FONT_TYPE_CJK && ft.getUnicodeEquivalent(' ') != ' ') {
while (string.endsWith("\u0001")) {
string = string.substring(0, string.length() - 1);
}
} else {
while (string.endsWith(" ") || string.endsWith("\t")) {
string = string.substring(0, string.length() - 1);
}
}
return string;
}
/**
* Constructs a <CODE>PdfChunk</CODE>-object.
*
* @param string the content of the <CODE>PdfChunk</CODE>-object
* @param other Chunk with the same style you want for the new Chunk
*/
PdfChunk(String string, PdfChunk other) {
thisChunk[0] = this;
value = string;
this.font = other.font;
this.attributes = other.attributes;
this.noStroke = other.noStroke;
this.baseFont = other.baseFont;
Object obj[] = (Object[]) attributes.get(Chunk.IMAGE);
if (obj == null) image = null;
else {
image = (Image) obj[0];
offsetX = ((Float) obj[1]).floatValue();
offsetY = ((Float) obj[2]).floatValue();
changeLeading = ((Boolean) obj[3]).booleanValue();
}
encoding = font.getFont().getEncoding();
splitCharacter = (SplitCharacter) noStroke.get(Chunk.SPLITCHARACTER);
if (splitCharacter == null) splitCharacter = DefaultSplitCharacter.DEFAULT;
}
float getCharWidth(int c) {
if (noPrint(c)) return 0;
return font.width(c);
}
/**
* Returns the width of this <CODE>PdfChunk</CODE>.
*
* @return a width
*/
float width() {
return font.width(value);
}
/**
* 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.
*/
PdfChunk split(float width) {
newlineSplit = false;
if (image != null) {
if (image.getScaledWidth() > width) {
PdfChunk pc = new PdfChunk(Chunk.OBJECT_REPLACEMENT_CHARACTER, this);
value = "";
attributes = new HashMap();
image = null;
font = PdfFont.getDefaultFont();
return pc;
} else return null;
}
HyphenationEvent hyphenationEvent = (HyphenationEvent) noStroke.get(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 valueArray[] = value.toCharArray();
char character = 0;
BaseFont ft = font.getFont();
boolean surrogate = false;
if (ft.getFontType() == BaseFont.FONT_TYPE_CJK && ft.getUnicodeEquivalent(' ') != ' ') {
while (currentPosition < length) {
// the width of every character is added to the currentWidth
char cidChar = valueArray[currentPosition];
character = (char) 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(0, currentPosition, length, valueArray, thisChunk))
splitPosition = currentPosition + 1;
currentPosition++;
}
} else {
while (currentPosition < length) {
// the width of every character is added to the currentWidth
character = valueArray[currentPosition];
// if a newLine or carriageReturn is encountered
if (character == '\r' || character == '\n') {
newlineSplit = true;
int inc = 1;
if (character == '\r'
&& currentPosition + 1 < length
&& valueArray[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;
}
surrogate = Utilities.isSurrogatePair(valueArray, currentPosition);
if (surrogate)
currentWidth +=
font.width(
Utilities.convertToUtf32(
valueArray[currentPosition], valueArray[currentPosition + 1]));
else currentWidth += font.width(character);
if (character == ' ') {
lastSpace = currentPosition + 1;
lastSpaceWidth = currentWidth;
}
if (surrogate) currentPosition++;
if (currentWidth > width) break;
// if a split-character is encountered, the splitPosition is altered
if (splitCharacter.isSplitCharacter(0, currentPosition, length, valueArray, null))
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(0, 0, 1, singleSpace, null))
splitPosition = lastSpace;
if (hyphenationEvent != null && lastSpace >= 0 && lastSpace < currentPosition) {
int wordIdx = getWord(value, lastSpace);
if (wordIdx > lastSpace) {
String pre =
hyphenationEvent.getHyphenatedWordPre(
value.substring(lastSpace, wordIdx),
font.getFont(),
font.size(),
width - lastSpaceWidth);
String post = hyphenationEvent.getHyphenatedWordPost();
if (pre.length() > 0) {
String returnValue = post + value.substring(wordIdx);
value = trim(value.substring(0, lastSpace) + pre);
PdfChunk pc = new PdfChunk(returnValue, this);
return pc;
}
}
}
String returnValue = value.substring(splitPosition);
value = trim(value.substring(0, splitPosition));
PdfChunk pc = new PdfChunk(returnValue, this);
return pc;
}
/**
* Constructs a <CODE>PdfChunk</CODE>-object.
*
* @param chunk the original <CODE>Chunk</CODE>-object
* @param action the <CODE>PdfAction</CODE> if the <CODE>Chunk</CODE> comes from an <CODE>Anchor
* </CODE>
*/
PdfChunk(Chunk chunk, PdfAction action) {
thisChunk[0] = this;
value = chunk.getContent();
Font f = chunk.getFont();
float size = f.getSize();
if (size == Font.UNDEFINED) size = 12;
baseFont = f.getBaseFont();
int style = f.getStyle();
if (style == Font.UNDEFINED) {
style = Font.NORMAL;
}
if (baseFont == null) {
// translation of the font-family to a PDF font-family
baseFont = f.getCalculatedBaseFont(false);
} else {
// bold simulation
if ((style & Font.BOLD) != 0)
attributes.put(
Chunk.TEXTRENDERMODE,
new Object[] {
new Integer(PdfContentByte.TEXT_RENDER_MODE_FILL_STROKE), new Float(size / 30f), null
});
// italic simulation
if ((style & Font.ITALIC) != 0) attributes.put(Chunk.SKEW, new float[] {0, ITALIC_ANGLE});
}
font = new PdfFont(baseFont, size);
// other style possibilities
HashMap attr = chunk.getAttributes();
if (attr != null) {
for (Iterator i = attr.entrySet().iterator(); i.hasNext(); ) {
Map.Entry entry = (Map.Entry) i.next();
Object name = entry.getKey();
if (keysAttributes.containsKey(name)) {
attributes.put(name, entry.getValue());
} else if (keysNoStroke.containsKey(name)) {
noStroke.put(name, entry.getValue());
}
}
if ("".equals(attr.get(Chunk.GENERICTAG))) {
attributes.put(Chunk.GENERICTAG, chunk.getContent());
}
}
if (f.isUnderlined()) {
Object obj[] = {null, new float[] {0, 1f / 15, 0, -1f / 3, 0}};
Object unders[][] = Utilities.addToArray((Object[][]) attributes.get(Chunk.UNDERLINE), obj);
attributes.put(Chunk.UNDERLINE, unders);
}
if (f.isStrikethru()) {
Object obj[] = {null, new float[] {0, 1f / 15, 0, 1f / 3, 0}};
Object unders[][] = Utilities.addToArray((Object[][]) attributes.get(Chunk.UNDERLINE), obj);
attributes.put(Chunk.UNDERLINE, unders);
}
if (action != null) attributes.put(Chunk.ACTION, action);
// the color can't be stored in a PdfFont
noStroke.put(Chunk.COLOR, f.getColor());
noStroke.put(Chunk.ENCODING, font.getFont().getEncoding());
Object obj[] = (Object[]) attributes.get(Chunk.IMAGE);
if (obj == null) {
image = null;
} else {
attributes.remove(Chunk.HSCALE); // images are scaled in other ways
image = (Image) obj[0];
offsetX = ((Float) obj[1]).floatValue();
offsetY = ((Float) obj[2]).floatValue();
changeLeading = ((Boolean) obj[3]).booleanValue();
}
font.setImage(image);
Float hs = (Float) attributes.get(Chunk.HSCALE);
if (hs != null) font.setHorizontalScaling(hs.floatValue());
encoding = font.getFont().getEncoding();
splitCharacter = (SplitCharacter) noStroke.get(Chunk.SPLITCHARACTER);
if (splitCharacter == null) splitCharacter = DefaultSplitCharacter.DEFAULT;
}
