/**
* Event.detail line start offset (input) Event.text line text (input) LineStyleEvent.styles
* Enumeration of StyleRanges, need to be in order. (output) LineStyleEvent.background line
* background color (output)
*/
public void lineGetStyle(LineStyleEvent event) {
Vector styles = new Vector();
int token;
StyleRange lastStyle;
// If the line is part of a block comment, create one style for the entire line.
if (inBlockComment(event.lineOffset, event.lineOffset + event.lineText.length())) {
styles.addElement(
new StyleRange(event.lineOffset, event.lineText.length(), getColor(COMMENT), null));
event.styles = new StyleRange[styles.size()];
styles.copyInto(event.styles);
return;
}
Color defaultFgColor = ((Control) event.widget).getForeground();
scanner.setRange(event.lineText);
token = scanner.nextToken();
while (token != EOF) {
if (token == OTHER) {
// do nothing for non-colored tokens
} else if (token != WHITE) {
Color color = getColor(token);
// Only create a style if the token color is different than the
// widget's default foreground color and the token's style is not
// bold. Keywords are bolded.
if ((!color.equals(defaultFgColor)) || (token == KEY)) {
StyleRange style =
new StyleRange(
scanner.getStartOffset() + event.lineOffset, scanner.getLength(), color, null);
if (token == KEY) {
style.fontStyle = SWT.BOLD;
}
if (styles.isEmpty()) {
styles.addElement(style);
} else {
// Merge similar styles. Doing so will improve performance.
lastStyle = (StyleRange) styles.lastElement();
if (lastStyle.similarTo(style) && (lastStyle.start + lastStyle.length == style.start)) {
lastStyle.length += style.length;
} else {
styles.addElement(style);
}
}
}
} else if ((!styles.isEmpty())
&& ((lastStyle = (StyleRange) styles.lastElement()).fontStyle == SWT.BOLD)) {
int start = scanner.getStartOffset() + event.lineOffset;
lastStyle = (StyleRange) styles.lastElement();
// A font style of SWT.BOLD implies that the last style
// represents a java keyword.
if (lastStyle.start + lastStyle.length == start) {
// Have the white space take on the style before it to
// minimize the number of style ranges created and the
// number of font style changes during rendering.
lastStyle.length += scanner.getLength();
}
}
token = scanner.nextToken();
}
event.styles = new StyleRange[styles.size()];
styles.copyInto(event.styles);
}
public void lineGetStyle(LineStyleEvent e) {
int lno = text.getLineAtOffset(e.lineOffset);
// int caret = text.getCaretOffset();
updateViewport();
LineRegion[] lrarr = baseEditor.getLineRegions(lno);
Vector styles = new Vector();
for (int idx = 0; idx < lrarr.length; idx++) {
LineRegion lr = lrarr[idx];
StyledRegion rdef = (StyledRegion) lr.rdef;
if (rdef == null) continue;
if (lr.special) continue;
int start = lr.start;
int end = lr.end;
if (end == -1) end = text.getContent().getLine(lno).length();
end = end - start;
start = e.lineOffset + start;
StyleRange sr =
new StyleRange(
start,
end,
cm.getColor(rdef.bfore, rdef.fore),
cm.getColor(rdef.bback, rdef.back),
rdef.style);
styles.addElement(sr);
}
;
e.styles = (StyleRange[]) styles.toArray(new StyleRange[] {});
}