下面列出了java.text.AttributedCharacterIterator#getIndex ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
/**
* finds attributes with regards to char index in this
* AttributedCharacterIterator, and puts them in a vector
*
* @param iterator
* @return a vector, each entry in this vector are of type FieldContainer,
* which stores start and end indexes and an attribute this range has
*/
protected static Vector<FieldContainer> findFields(AttributedCharacterIterator iterator) {
Vector<FieldContainer> result = new Vector<FieldContainer>();
while (iterator.getIndex() != iterator.getEndIndex()) {
int start = iterator.getRunStart();
int end = iterator.getRunLimit();
Iterator<Attribute> it = iterator.getAttributes().keySet().iterator();
while (it.hasNext()) {
AttributedCharacterIterator.Attribute attribute = it.next();
Object value = iterator.getAttribute(attribute);
result.add(new FieldContainer(start, end, attribute, value));
// System.out.println(start + " " + end + ": " + attribute + ",
// " + value );
// System.out.println("v.add(new FieldContainer(" + start +"," +
// end +"," + attribute+ "," + value+ "));");
}
iterator.setIndex(end);
}
return result;
}
private static AttributedCharacterIterator getTrimmedTrailingSpacesIterator
(AttributedCharacterIterator iterator) {
int curIdx = iterator.getIndex();
char c = iterator.last();
while(c != CharacterIterator.DONE && Character.isWhitespace(c)) {
c = iterator.previous();
}
if (c != CharacterIterator.DONE) {
int endIdx = iterator.getIndex();
if (endIdx == iterator.getEndIndex() - 1) {
iterator.setIndex(curIdx);
return iterator;
} else {
AttributedString trimmedText = new AttributedString(iterator,
iterator.getBeginIndex(), endIdx + 1);
return trimmedText.getIterator();
}
} else {
return null;
}
}
/**
* 12.1.6 PartitionDateTimePattern ( dateTimeFormat, x )
*
* @param dateTimeFormat
* the date format object
* @param date
* the date object
* @return the formatted date-time object
*/
private static List<Map.Entry<String, String>> PartitionDateTimePattern(DateTimeFormatObject dateTimeFormat,
Date date) {
ArrayList<Map.Entry<String, String>> parts = new ArrayList<>();
DateFormat dateFormat = dateTimeFormat.getDateFormat();
AttributedCharacterIterator iterator = dateFormat.formatToCharacterIterator(date);
StringBuilder sb = new StringBuilder();
for (char ch = iterator.first(); ch != CharacterIterator.DONE; ch = iterator.next()) {
sb.append(ch);
if (iterator.getIndex() + 1 == iterator.getRunLimit()) {
Iterator<Attribute> keyIterator = iterator.getAttributes().keySet().iterator();
String key;
if (keyIterator.hasNext()) {
key = fieldToString((DateFormat.Field) keyIterator.next());
} else {
key = "literal";
}
String value = sb.toString();
sb.setLength(0);
parts.add(new AbstractMap.SimpleImmutableEntry<>(key, value));
}
}
return parts;
}
/**
* Appends all characters and attributes from the given iterator.
*
* @param toAppendTo shall be the same instance than {@link #text}.
*/
final void append(final AttributedCharacterIterator it, final StringBuffer toAppendTo) {
final int offset = toAppendTo.length();
int currentRunLimit = 0; // Next index where to check for attributes.
for (char c=it.first(); c!=DONE; c=it.next()) {
toAppendTo.append(c);
if (it.getIndex() == currentRunLimit) {
currentRunLimit = it.getRunLimit();
for (final Map.Entry<Attribute,Object> entry : it.getAttributes().entrySet()) {
final Attribute attribute = entry.getKey();
if (it.getRunLimit(attribute) == currentRunLimit) {
final Entry e = new Entry(attribute, entry.getValue(), // Constructeur adds itself to the map.
offset + it.getRunStart(attribute),
offset + currentRunLimit, attributes);
}
}
}
}
upper = toAppendTo.length();
}
private static AttributedCharacterIterator getTrimmedTrailingSpacesIterator
(AttributedCharacterIterator iterator) {
int curIdx = iterator.getIndex();
char c = iterator.last();
while(c != CharacterIterator.DONE && Character.isWhitespace(c)) {
c = iterator.previous();
}
if (c != CharacterIterator.DONE) {
int endIdx = iterator.getIndex();
if (endIdx == iterator.getEndIndex() - 1) {
iterator.setIndex(curIdx);
return iterator;
} else {
AttributedString trimmedText = new AttributedString(iterator,
iterator.getBeginIndex(), endIdx + 1);
return trimmedText.getIterator();
}
} else {
return null;
}
}
private static AttributedCharacterIterator getTrimmedTrailingSpacesIterator
(AttributedCharacterIterator iterator) {
int curIdx = iterator.getIndex();
char c = iterator.last();
while(c != CharacterIterator.DONE && Character.isWhitespace(c)) {
c = iterator.previous();
}
if (c != CharacterIterator.DONE) {
int endIdx = iterator.getIndex();
if (endIdx == iterator.getEndIndex() - 1) {
iterator.setIndex(curIdx);
return iterator;
} else {
AttributedString trimmedText = new AttributedString(iterator,
iterator.getBeginIndex(), endIdx + 1);
return trimmedText.getIterator();
}
} else {
return null;
}
}
private static AttributedCharacterIterator getTrimmedTrailingSpacesIterator
(AttributedCharacterIterator iterator) {
int curIdx = iterator.getIndex();
char c = iterator.last();
while(c != CharacterIterator.DONE && Character.isWhitespace(c)) {
c = iterator.previous();
}
if (c != CharacterIterator.DONE) {
int endIdx = iterator.getIndex();
if (endIdx == iterator.getEndIndex() - 1) {
iterator.setIndex(curIdx);
return iterator;
} else {
AttributedString trimmedText = new AttributedString(iterator,
iterator.getBeginIndex(), endIdx + 1);
return trimmedText.getIterator();
}
} else {
return null;
}
}
private static AttributedCharacterIterator getTrimmedTrailingSpacesIterator
(AttributedCharacterIterator iterator) {
int curIdx = iterator.getIndex();
char c = iterator.last();
while(c != CharacterIterator.DONE && Character.isWhitespace(c)) {
c = iterator.previous();
}
if (c != CharacterIterator.DONE) {
int endIdx = iterator.getIndex();
if (endIdx == iterator.getEndIndex() - 1) {
iterator.setIndex(curIdx);
return iterator;
} else {
AttributedString trimmedText = new AttributedString(iterator,
iterator.getBeginIndex(), endIdx + 1);
return trimmedText.getIterator();
}
} else {
return null;
}
}
private static AttributedCharacterIterator getTrimmedTrailingSpacesIterator
(AttributedCharacterIterator iterator) {
int curIdx = iterator.getIndex();
char c = iterator.last();
while(c != CharacterIterator.DONE && Character.isWhitespace(c)) {
c = iterator.previous();
}
if (c != CharacterIterator.DONE) {
int endIdx = iterator.getIndex();
if (endIdx == iterator.getEndIndex() - 1) {
iterator.setIndex(curIdx);
return iterator;
} else {
AttributedString trimmedText = new AttributedString(iterator,
iterator.getBeginIndex(), endIdx + 1);
return trimmedText.getIterator();
}
} else {
return null;
}
}
@Override
public void drawString(AttributedCharacterIterator iterator, float x,
float y) {
int index = iterator.getIndex();
g1.drawString(iterator, x, y);
iterator.setIndex(index);
g2.drawString(iterator, x, y);
}
/**
* @see Graphics2D#drawString(AttributedCharacterIterator, float, float)
*/
public void drawString(AttributedCharacterIterator iter, float x, float y) {
/*
StringBuffer sb = new StringBuffer();
for(char c = iter.first(); c != AttributedCharacterIterator.DONE; c = iter.next()) {
sb.append(c);
}
drawString(sb.toString(),x,y);
*/
StringBuffer stringbuffer = new StringBuffer(iter.getEndIndex());
for(char c = iter.first(); c != '\uFFFF'; c = iter.next())
{
if(iter.getIndex() == iter.getRunStart())
{
if(stringbuffer.length() > 0)
{
drawString(stringbuffer.toString(), x, y);
FontMetrics fontmetrics = getFontMetrics();
x = (float)((double)x + fontmetrics.getStringBounds(stringbuffer.toString(), this).getWidth());
stringbuffer.delete(0, stringbuffer.length());
}
doAttributes(iter);
}
stringbuffer.append(c);
}
drawString(stringbuffer.toString(), x, y);
underline = false;
}
@Override
public void drawString(AttributedCharacterIterator iterator, int x, int y) {
int index = iterator.getIndex();
g1.drawString(iterator, x, y);
iterator.setIndex(index);
g2.drawString(iterator, x, y);
}
private static boolean hasTextRunBreakingAttribute(AttributedCharacterIterator iterator, int index) {
int s = iterator.getIndex();
if (index != s)
iterator.setIndex(index);
int k = iterator.getRunStart(textRunBreakingAttributes);
if (index != s)
iterator.setIndex(s);
return k == index;
}
private static void copyAsSuperscript(
AttributedCharacterIterator iterator, int start, int limit, StringBuilder result) {
int oldIndex = iterator.getIndex();
iterator.setIndex(start);
while (iterator.getIndex() < limit) {
int aChar = char32AtAndAdvance(iterator);
int digit = UCharacter.digit(aChar);
if (digit < 0) {
throw new IllegalArgumentException();
}
result.append(SUPERSCRIPT_DIGITS[digit]);
}
iterator.setIndex(oldIndex);
}
static void append(
AttributedCharacterIterator iterator,
int start,
int limit,
StringBuilder result) {
int oldIndex = iterator.getIndex();
iterator.setIndex(start);
for (int i = start; i < limit; i++) {
result.append(iterator.current());
iterator.next();
}
iterator.setIndex(oldIndex);
}
@Nullable
private TextLayout createTextLayout(String text, Font basefont, FontRenderContext fontRenderContext) {
if (StringUtil.isEmpty(text)) return null;
AttributedString string = new AttributedString(text);
int start = 0;
int end = text.length();
AttributedCharacterIterator it = string.getIterator(new AttributedCharacterIterator.Attribute[0], start, end);
Font currentFont = basefont;
int currentIndex = start;
for (char c = it.first(); c != CharacterIterator.DONE; c = it.next()) {
Font font = basefont;
if (!font.canDisplay(c)) {
for (SuitableFontProvider provider : SuitableFontProvider.EP_NAME.getExtensions()) {
font = provider.getFontAbleToDisplay(c, basefont.getSize(), basefont.getStyle(), basefont.getFamily());
if (font != null) break;
}
}
int i = it.getIndex();
if (!Comparing.equal(currentFont, font)) {
if (i > currentIndex) {
string.addAttribute(TextAttribute.FONT, currentFont, currentIndex, i);
}
currentFont = font;
currentIndex = i;
}
}
if (currentIndex < end) {
string.addAttribute(TextAttribute.FONT, currentFont, currentIndex, end);
}
return new TextLayout(string.getIterator(), fontRenderContext);
}
public boolean isEmbedding() {
boolean rv = true;
AttributedCharacterIterator aci = getIterator();
int savedIndex = aci.getIndex();
int b = aci.getBeginIndex();
int e = aci.getEndIndex();
if ((e - b) != 1)
rv = false;
else if (aci.setIndex(b) != Characters.UC_OBJECT)
rv = false;
aci.setIndex(savedIndex);
return rv;
}
private TextLayout createAndCacheTextLayout(int fragmentIndex, Font basefont, FontRenderContext fontRenderContext) {
String text = myFragments.get(fragmentIndex);
AttributedString string = new AttributedString(text);
int start = 0;
int end = text.length();
AttributedCharacterIterator it = string.getIterator(new AttributedCharacterIterator.Attribute[0], start, end);
Font currentFont = basefont;
int currentIndex = start;
for (char c = it.first(); c != CharacterIterator.DONE; c = it.next()) {
Font font = basefont;
// TODO(jacobr): SuitableFontProvider is a private class so we can't
// easily use it. How important is supporting this use case?
/*
if (!font.canDisplay(c)) {
for (SuitableFontProvider provider : SuitableFontProvider.EP_NAME.getExtensions()) {
font = provider.getFontAbleToDisplay(c, basefont.getSize(), basefont.getStyle(), basefont.getFamily());
if (font != null) break;
}
}
*/
int i = it.getIndex();
if (!Comparing.equal(currentFont, font)) {
if (i > currentIndex) {
string.addAttribute(TextAttribute.FONT, currentFont, currentIndex, i);
}
currentFont = font;
currentIndex = i;
}
}
if (currentIndex < end) {
string.addAttribute(TextAttribute.FONT, currentFont, currentIndex, end);
}
TextLayout layout = new TextLayout(string.getIterator(), fontRenderContext);
if (fragmentIndex >= myLayouts.size()) {
myLayouts.addAll(Collections.nCopies(fragmentIndex - myLayouts.size() + 1, null));
}
myLayouts.set(fragmentIndex, layout);
myLayoutFont = getBaseFont();
return layout;
}
/**
* @see Graphics2D#drawString(AttributedCharacterIterator, float, float)
*/
@Override
public void drawString(AttributedCharacterIterator iter, float x, float y) {
/*
StringBuffer sb = new StringBuffer();
for(char c = iter.first(); c != AttributedCharacterIterator.DONE; c = iter.next()) {
sb.append(c);
}
drawString(sb.toString(),x,y);
*/
StringBuffer stringbuffer = new StringBuffer(iter.getEndIndex());
for (char c = iter.first(); c != '\uFFFF'; c = iter.next()) {
if (iter.getIndex() == iter.getRunStart()) {
if (stringbuffer.length() > 0) {
drawString(stringbuffer.toString(), x, y);
FontMetrics fontmetrics = getFontMetrics();
x = (float) (x + fontmetrics.getStringBounds(stringbuffer.toString(), this).getWidth());
stringbuffer.delete(0, stringbuffer.length());
}
doAttributes(iter);
}
stringbuffer.append(c);
}
drawString(stringbuffer.toString(), x, y);
underline = false;
}
/**
* @see Graphics2D#drawString(AttributedCharacterIterator, float, float)
*/
public void drawString(AttributedCharacterIterator iter, float x, float y) {
if(onlyShapes) {
/*
* When drawing shapes, always use TextLayout, because it will
* ensure all chars are correctly layouted. With this even Bidi Texts work
* perfect.
*/
TextLayout textLayout = new TextLayout(iter, getFontRenderContext());
textLayout.draw(this, x, y);
return;
}
StringBuffer stringbuffer = new StringBuffer(iter.getEndIndex());
for(char c = iter.first(); c != '\uFFFF'; c = iter.next())
{
if(iter.getIndex() == iter.getRunStart())
{
if(stringbuffer.length() > 0)
{
drawString(stringbuffer.toString(), x, y);
FontMetrics fontmetrics = getFontMetrics();
x = (float)(x + fontmetrics.getStringBounds(stringbuffer.toString(), this).getWidth());
stringbuffer.delete(0, stringbuffer.length());
}
doAttributes(iter);
}
stringbuffer.append(c);
}
drawString(stringbuffer.toString(), x, y);
underline = false;
}