/**
* set / update the text of the displayLabels. these are the Week column headers above the days on
* the Calendar part of the <code>CDateTime</code>.
*/
private void updateDaysOfWeek() {
if (dayPanel != null) {
Calendar tmpcal = cdt.getCalendarInstance();
tmpcal.set(Calendar.DAY_OF_WEEK, tmpcal.getFirstDayOfWeek());
Locale locale = cdt.getLocale();
boolean ltr =
(ComponentOrientation.getOrientation(locale).isLeftToRight()
&& !locale.getLanguage().equals("zh")); // $NON-NLS-1$
BreakIterator iterator = BreakIterator.getCharacterInstance(locale);
for (int x = 0; x < dayLabels.length; x++) {
String str = getFormattedDate("E", tmpcal.getTime()); // $NON-NLS-1$
if (dayLabels[x].getData(CDT.Key.Compact, Boolean.class)) {
iterator.setText(str);
int start, end;
if (ltr) {
start = iterator.first();
end = iterator.next();
} else {
end = iterator.last();
start = iterator.previous();
}
dayLabels[x].setText(str.substring(start, end));
} else {
dayLabels[x].setText(str);
}
tmpcal.add(Calendar.DAY_OF_WEEK, 1);
}
}
}
public void check(String name, String in, String[] out, BreakIterator bi, TestHarness harness) {
harness.checkPoint(name);
bi.setText(in);
int index = 0;
int from = bi.current();
harness.check(from, 0);
while (true) {
int to = bi.next();
if (to == BreakIterator.DONE) break;
harness.check(in.substring(from, to), out[index]);
++index;
from = to;
}
harness.check(index, out.length);
harness.checkPoint("backwards " + name);
bi.last();
index = out.length - 1;
from = bi.current();
harness.check(from, in.length());
while (true) {
int to = bi.previous();
if (to == BreakIterator.DONE) break;
harness.check(in.substring(to, from), out[index]);
--index;
from = to;
}
harness.check(index, -1);
}
// offsets on any line will go from start,true to end,false
// excluding start,false and end,true
public Selection point2Offset(Point p, Selection o) {
if (p.y < yInset) {
o.caret = 0;
o.clickAfter = true;
return o;
}
int line = (p.y - yInset) / lineHeight;
if (line >= lineCount) {
o.caret = contents.length();
o.clickAfter = false;
return o;
}
int target = p.x - xInset;
if (target <= 0) {
o.caret = lineStarts[line];
o.clickAfter = true;
return o;
}
int lowGuess = lineStarts[line];
int lowWidth = 0;
int highGuess = lineStarts[line + 1];
int highWidth = fm.stringWidth(contents.substring(lineStarts[line], highGuess));
if (target >= highWidth) {
o.caret = lineStarts[line + 1];
o.clickAfter = false;
return o;
}
while (lowGuess < highGuess - 1) {
int guess = (lowGuess + highGuess) / 2;
int width = fm.stringWidth(contents.substring(lineStarts[line], guess));
if (width <= target) {
lowGuess = guess;
lowWidth = width;
if (width == target) break;
} else {
highGuess = guess;
highWidth = width;
}
}
// at end, either lowWidth < target < width(low+1), or lowWidth = target
int highBound = charBreaker.following(lowGuess);
int lowBound = charBreaker.previous();
// we are now at character boundaries
if (lowBound != lowGuess)
lowWidth = fm.stringWidth(contents.substring(lineStarts[line], lowBound));
if (highBound != highGuess)
highWidth = fm.stringWidth(contents.substring(lineStarts[line], highBound));
// we now have the right widths
if (target - lowWidth < highWidth - target) {
o.caret = lowBound;
o.clickAfter = true;
} else {
o.caret = highBound;
o.clickAfter = false;
}
// we now have the closest!
return o;
}
