/**
* 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 Hashtable();
image = null;
font = PdfFont.DefaultFont;
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[] valueArray = value.ToCharArray();
char character = (char)0;
BaseFont ft = font.Font;
bool surrogate = false;
if (ft.FontType == 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 - lastSpace), font.Font, font.Size, width - lastSpaceWidth);
string post = hyphenationEvent.HyphenatedWordPost;
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 retVal = value.Substring(splitPosition);
value = Trim(value.Substring(0, splitPosition));
PdfChunk tmp = new PdfChunk(retVal, this);
return tmp;
}
/**
* 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.
*/
internal PdfChunk Truncate(float width)
{
if (image != null) {
if (image.ScaledWidth > width) {
PdfChunk pc = new PdfChunk("", this);
value = "";
attributes.Remove(Chunk.IMAGE);
image = null;
font = PdfFont.DefaultFont;
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;
bool surrogate = false;
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[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 retVal = value.Substring(currentPosition);
value = value.Substring(0, currentPosition);
PdfChunk tmp = new PdfChunk(retVal, this);
return tmp;
}
/**
* 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>
*/
internal PdfChunk(Chunk chunk, PdfAction action)
{
thisChunk[0] = this;
value = chunk.Content;
Font f = chunk.Font;
float size = f.Size;
if (size == Legacy.Text.Font.UNDEFINED)
size = 12;
baseFont = f.BaseFont;
BaseFont bf = f.BaseFont;
int style = f.Style;
if (style == Legacy.Text.Font.UNDEFINED) {
style = Legacy.Text.Font.NORMAL;
}
if (baseFont == null) {
// translation of the font-family to a PDF font-family
baseFont = f.GetCalculatedBaseFont(false);
}
else{
// bold simulation
if ((style & Legacy.Text.Font.BOLD) != 0)
attributes[Chunk.TEXTRENDERMODE] = new Object[]{PdfContentByte.TEXT_RENDER_MODE_FILL_STROKE, size / 30f, null};
// italic simulation
if ((style & Legacy.Text.Font.ITALIC) != 0)
attributes[Chunk.SKEW] = new float[]{0, ITALIC_ANGLE};
}
font = new PdfFont(baseFont, size);
// other style possibilities
Hashtable attr = chunk.Attributes;
if (attr != null) {
foreach (DictionaryEntry entry in attr) {
string name = (string)entry.Key;
if (keysAttributes.ContainsKey(name)) {
attributes[name] = entry.Value;
}
else if (keysNoStroke.ContainsKey(name)) {
noStroke[name] = entry.Value;
}
}
if ("".Equals(attr[Chunk.GENERICTAG])) {
attributes[Chunk.GENERICTAG] = chunk.Content;
}
}
if (f.IsUnderlined()) {
Object[] obj = {null, new float[]{0, 1f / 15, 0, -1f / 3, 0}};
Object[][] unders = Utilities.AddToArray((Object[][])attributes[Chunk.UNDERLINE], obj);
attributes[Chunk.UNDERLINE] = unders;
}
if (f.IsStrikethru()) {
Object[] obj = {null, new float[]{0, 1f / 15, 0, 1f / 3, 0}};
Object[][] unders = Utilities.AddToArray((Object[][])attributes[Chunk.UNDERLINE], obj);
attributes[Chunk.UNDERLINE] = unders;
}
if (action != null)
attributes[Chunk.ACTION] = action;
// the color can't be stored in a PdfFont
noStroke[Chunk.COLOR] = f.Color;
noStroke[Chunk.ENCODING] = font.Font.Encoding;
Object[] obj2 = (Object[])attributes[Chunk.IMAGE];
if (obj2 == null)
image = null;
else {
attributes.Remove(Chunk.HSCALE); // images are scaled in other ways
image = (Image)obj2[0];
offsetX = ((float)obj2[1]);
offsetY = ((float)obj2[2]);
changeLeading = (bool)obj2[3];
}
font.Image = image;
object hs = attributes[Chunk.HSCALE];
if (hs != null)
font.HorizontalScaling = (float)hs;
encoding = font.Font.Encoding;
splitCharacter = (ISplitCharacter)noStroke[Chunk.SPLITCHARACTER];
if (splitCharacter == null)
splitCharacter = DefaultSplitCharacter.DEFAULT;
}
// constructors
/**
* Constructs a <CODE>PdfChunk</CODE>-object.
*
* @param string the content of the <CODE>PdfChunk</CODE>-object
* @param font the <CODE>PdfFont</CODE>
* @param attributes the metrics attributes
* @param noStroke the non metric attributes
*/
internal PdfChunk(string str, PdfChunk other)
{
thisChunk[0] = this;
value = str;
this.font = other.font;
this.attributes = other.attributes;
this.noStroke = other.noStroke;
this.baseFont = other.baseFont;
Object[] obj = (Object[])attributes[Chunk.IMAGE];
if (obj == null)
image = null;
else {
image = (Image)obj[0];
offsetX = (float)obj[1];
offsetY = (float)obj[2];
changeLeading = (bool)obj[3];
}
encoding = font.Font.Encoding;
splitCharacter = (ISplitCharacter)noStroke[Chunk.SPLITCHARACTER];
if (splitCharacter == null)
splitCharacter = DefaultSplitCharacter.DEFAULT;
}
/**
* 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.
*/
internal PdfChunk Truncate(float width)
{
if (image != null)
{
if (image.ScaledWidth > width)
{
PdfChunk pc = new PdfChunk("", this);
value = "";
attributes.Remove(Chunk.IMAGE);
image = null;
font = PdfFont.DefaultFont;
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;
bool surrogate = false;
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[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 retVal = value.Substring(currentPosition);
value = value.Substring(0, currentPosition);
PdfChunk tmp = new PdfChunk(retVal, this);
return(tmp);
}
/**
* 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 Hashtable();
image = null;
font = PdfFont.DefaultFont;
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[] valueArray = value.ToCharArray();
char character = (char)0;
BaseFont ft = font.Font;
bool surrogate = false;
if (ft.FontType == 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 - lastSpace), font.Font, font.Size, width - lastSpaceWidth);
string post = hyphenationEvent.HyphenatedWordPost;
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 retVal = value.Substring(splitPosition);
value = Trim(value.Substring(0, splitPosition));
PdfChunk tmp = new PdfChunk(retVal, this);
return(tmp);
}
/**
* 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>
*/
internal PdfChunk(Chunk chunk, PdfAction action)
{
thisChunk[0] = this;
value = chunk.Content;
Font f = chunk.Font;
float size = f.Size;
if (size == Legacy.Text.Font.UNDEFINED)
{
size = 12;
}
baseFont = f.BaseFont;
BaseFont bf = f.BaseFont;
int style = f.Style;
if (style == Legacy.Text.Font.UNDEFINED)
{
style = Legacy.Text.Font.NORMAL;
}
if (baseFont == null)
{
// translation of the font-family to a PDF font-family
baseFont = f.GetCalculatedBaseFont(false);
}
else
{
// bold simulation
if ((style & Legacy.Text.Font.BOLD) != 0)
{
attributes[Chunk.TEXTRENDERMODE] = new Object[] { PdfContentByte.TEXT_RENDER_MODE_FILL_STROKE, size / 30f, null }
}
;
// italic simulation
if ((style & Legacy.Text.Font.ITALIC) != 0)
{
attributes[Chunk.SKEW] = new float[] { 0, ITALIC_ANGLE }
}
;
}
font = new PdfFont(baseFont, size);
// other style possibilities
Hashtable attr = chunk.Attributes;
if (attr != null)
{
foreach (DictionaryEntry entry in attr)
{
string name = (string)entry.Key;
if (keysAttributes.ContainsKey(name))
{
attributes[name] = entry.Value;
}
else if (keysNoStroke.ContainsKey(name))
{
noStroke[name] = entry.Value;
}
}
if ("".Equals(attr[Chunk.GENERICTAG]))
{
attributes[Chunk.GENERICTAG] = chunk.Content;
}
}
if (f.IsUnderlined())
{
Object[] obj = { null, new float[] { 0, 1f / 15, 0, -1f / 3, 0 } };
Object[][] unders = Utilities.AddToArray((Object[][])attributes[Chunk.UNDERLINE], obj);
attributes[Chunk.UNDERLINE] = unders;
}
if (f.IsStrikethru())
{
Object[] obj = { null, new float[] { 0, 1f / 15, 0, 1f / 3, 0 } };
Object[][] unders = Utilities.AddToArray((Object[][])attributes[Chunk.UNDERLINE], obj);
attributes[Chunk.UNDERLINE] = unders;
}
if (action != null)
{
attributes[Chunk.ACTION] = action;
}
// the color can't be stored in a PdfFont
noStroke[Chunk.COLOR] = f.Color;
noStroke[Chunk.ENCODING] = font.Font.Encoding;
Object[] obj2 = (Object[])attributes[Chunk.IMAGE];
if (obj2 == null)
{
image = null;
}
else
{
attributes.Remove(Chunk.HSCALE); // images are scaled in other ways
image = (Image)obj2[0];
offsetX = ((float)obj2[1]);
offsetY = ((float)obj2[2]);
changeLeading = (bool)obj2[3];
}
font.Image = image;
object hs = attributes[Chunk.HSCALE];
if (hs != null)
{
font.HorizontalScaling = (float)hs;
}
encoding = font.Font.Encoding;
splitCharacter = (ISplitCharacter)noStroke[Chunk.SPLITCHARACTER];
if (splitCharacter == null)
{
splitCharacter = DefaultSplitCharacter.DEFAULT;
}
}
