private static void appendAbbreviated(
StringBuilder to,
String text,
int start,
int end,
FontMetrics metrics,
int maxWidth,
boolean replaceLineTerminators) {
int abbreviationLength =
abbreviationLength(text, start, end, metrics, maxWidth, replaceLineTerminators);
if (!replaceLineTerminators) {
to.append(text, start, start + abbreviationLength);
} else {
CharSequenceSubSequence subSeq =
new CharSequenceSubSequence(text, start, start + abbreviationLength);
for (LineTokenizer lt = new LineTokenizer(subSeq); !lt.atEnd(); lt.advance()) {
to.append(subSeq, lt.getOffset(), lt.getOffset() + lt.getLength());
if (lt.getLineSeparatorLength() > 0) {
to.append(RETURN_SYMBOL);
}
}
}
if (abbreviationLength != end - start) {
to.append(ABBREVIATION_SUFFIX);
}
}
private void updateText(Rectangle clip) {
FontMetrics fontMetrics =
((EditorImpl) getEditor())
.getFontMetrics(
myTextAttributes != null ? myTextAttributes.getFontType() : Font.PLAIN);
Insets insets = getInsets();
int maxLineWidth = getWidth() - (insets != null ? insets.left + insets.right : 0);
myDocumentTextBuilder.setLength(0);
boolean singleLineMode = getHeight() / (float) getEditor().getLineHeight() < 1.1f;
if (singleLineMode) {
appendAbbreviated(
myDocumentTextBuilder,
myRawText,
0,
myRawText.length(),
fontMetrics,
maxLineWidth,
true);
} else {
int lineHeight = getEditor().getLineHeight();
int firstVisibleLine = clip.y / lineHeight;
float visibleLinesCountFractional = clip.height / (float) lineHeight;
int linesToAppend = 1 + (int) visibleLinesCountFractional;
LineTokenizer lt = new LineTokenizer(myRawText);
for (int line = 0; !lt.atEnd() && line < firstVisibleLine; lt.advance(), line++) {
myDocumentTextBuilder.append('\n');
}
for (int line = 0; !lt.atEnd() && line < linesToAppend; lt.advance(), line++) {
int start = lt.getOffset();
int end = start + lt.getLength();
appendAbbreviated(
myDocumentTextBuilder, myRawText, start, end, fontMetrics, maxLineWidth, false);
if (lt.getLineSeparatorLength() > 0) {
myDocumentTextBuilder.append('\n');
}
}
}
setTextToEditor(myDocumentTextBuilder.toString());
}