/**
* Draws a single view (i.e., a line of text for a wrapped view), wrapping the text onto multiple
* lines if necessary.
*
* @param painter The painter to use to render tokens.
* @param g The graphics context in which to paint.
* @param r The rectangle in which to paint.
* @param view The <code>View</code> to paint.
* @param fontHeight The height of the font being used.
* @param y The y-coordinate at which to begin painting.
*/
protected void drawView(
TokenPainter painter, Graphics2D g, Rectangle r, View view, int fontHeight, int y) {
float x = r.x;
LayeredHighlighter h = (LayeredHighlighter) host.getHighlighter();
RSyntaxDocument document = (RSyntaxDocument) getDocument();
Element map = getElement();
int p0 = view.getStartOffset();
int lineNumber = map.getElementIndex(p0);
int p1 = view.getEndOffset(); // - 1;
setSegment(p0, p1 - 1, document, drawSeg);
// System.err.println("drawSeg=='" + drawSeg + "' (p0/p1==" + p0 + "/" + p1 + ")");
int start = p0 - drawSeg.offset;
Token token = document.getTokenListForLine(lineNumber);
// If this line is an empty line, then the token list is simply a
// null token. In this case, the line highlight will be skipped in
// the loop below, so unfortunately we must manually do it here.
if (token != null && token.getType() == Token.NULL) {
h.paintLayeredHighlights(g, p0, p1, r, host, this);
return;
}
// Loop through all tokens in this view and paint them!
while (token != null && token.isPaintable()) {
int p = calculateBreakPosition(p0, token, x);
x = r.x;
h.paintLayeredHighlights(g, p0, p, r, host, this);
while (token != null && token.isPaintable() && token.getEndOffset() - 1 < p) { // <=p) {
x = painter.paint(token, g, x, y, host, this);
token = token.getNextToken();
}
if (token != null && token.isPaintable() && token.getOffset() < p) {
int tokenOffset = token.getOffset();
tempToken.set(
drawSeg.array, tokenOffset - start, p - 1 - start, tokenOffset, token.getType());
painter.paint(tempToken, g, x, y, host, this);
tempToken.copyFrom(token);
tempToken.makeStartAt(p);
token = new TokenImpl(tempToken);
}
p0 = (p == p0) ? p1 : p;
y += fontHeight;
} // End of while (token!=null && token.isPaintable()).
// NOTE: We should re-use code from Token (paintBackground()) here,
// but don't because I'm just too lazy.
if (host.getEOLMarkersVisible()) {
g.setColor(host.getForegroundForTokenType(Token.WHITESPACE));
g.setFont(host.getFontForTokenType(Token.WHITESPACE));
g.drawString("\u00B6", x, y - fontHeight);
}
}
/**
* Constructor.
*
* @param line The segment from which to get the token.
* @param beg The first character's position in <code>line</code>.
* @param end The last character's position in <code>line</code>.
* @param startOffset The offset into the document at which this token begins.
* @param type A token type listed as "generic" above.
*/
public TokenImpl(char[] line, int beg, int end, int startOffset, int type) {
this();
set(line, beg, end, startOffset, type);
}