Ejemplo n.º 1
0
  /**
   * Draws a single view (i.e., a line of text for a wrapped view), wrapping the text onto multiple
   * lines if necessary. Any selected text is rendered with the editor's "selected text" color.
   *
   * @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.
   * @param selStart The start of the selection.
   * @param selEnd The end of the selection.
   */
  protected void drawViewWithSelection(
      TokenPainter painter,
      Graphics2D g,
      Rectangle r,
      View view,
      int fontHeight,
      int y,
      int selStart,
      int selEnd) {

    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) {

        // Selection starts in this token
        if (token.containsPosition(selStart)) {

          if (selStart > token.getOffset()) {
            tempToken.copyFrom(token);
            tempToken.textCount = selStart - tempToken.getOffset();
            x = painter.paint(tempToken, g, x, y, host, this);
            tempToken.textCount = token.length();
            tempToken.makeStartAt(selStart);
            // Clone required since token and tempToken must be
            // different tokens for else statement below
            token = new TokenImpl(tempToken);
          }

          int selCount = Math.min(token.length(), selEnd - token.getOffset());
          if (selCount == token.length()) {
            x = painter.paintSelected(token, g, x, y, host, this);
          } else {
            tempToken.copyFrom(token);
            tempToken.textCount = selCount;
            x = painter.paintSelected(tempToken, g, x, y, host, this);
            tempToken.textCount = token.length();
            tempToken.makeStartAt(token.getOffset() + selCount);
            token = tempToken;
            x = painter.paint(token, g, x, y, host, this);
          }

        }

        // Selection ends in this token
        else if (token.containsPosition(selEnd)) {
          tempToken.copyFrom(token);
          tempToken.textCount = selEnd - tempToken.getOffset();
          x = painter.paintSelected(tempToken, g, x, y, host, this);
          tempToken.textCount = token.length();
          tempToken.makeStartAt(selEnd);
          token = tempToken;
          x = painter.paint(token, g, x, y, host, this);
        }

        // This token is entirely selected
        else if (token.getOffset() >= selStart && token.getEndOffset() <= selEnd) {
          x = painter.paintSelected(token, g, x, y, host, this);
        }

        // This token is entirely unselected
        else {
          x = painter.paint(token, g, x, y, host, this);
        }

        token = token.getNextToken();
      }

      // If there's a token that's going to be split onto the next line
      if (token != null && token.isPaintable() && token.getOffset() < p) {

        int tokenOffset = token.getOffset();
        Token orig = token;
        token =
            new TokenImpl(
                drawSeg, tokenOffset - start, p - 1 - start, tokenOffset, token.getType());

        // Selection starts in this token
        if (token.containsPosition(selStart)) {

          if (selStart > token.getOffset()) {
            tempToken.copyFrom(token);
            tempToken.textCount = selStart - tempToken.getOffset();
            x = painter.paint(tempToken, g, x, y, host, this);
            tempToken.textCount = token.length();
            tempToken.makeStartAt(selStart);
            // Clone required since token and tempToken must be
            // different tokens for else statement below
            token = new TokenImpl(tempToken);
          }

          int selCount = Math.min(token.length(), selEnd - token.getOffset());
          if (selCount == token.length()) {
            x = painter.paintSelected(token, g, x, y, host, this);
          } else {
            tempToken.copyFrom(token);
            tempToken.textCount = selCount;
            x = painter.paintSelected(tempToken, g, x, y, host, this);
            tempToken.textCount = token.length();
            tempToken.makeStartAt(token.getOffset() + selCount);
            token = tempToken;
            x = painter.paint(token, g, x, y, host, this);
          }

        }

        // Selection ends in this token
        else if (token.containsPosition(selEnd)) {
          tempToken.copyFrom(token);
          tempToken.textCount = selEnd - tempToken.getOffset();
          x = painter.paintSelected(tempToken, g, x, y, host, this);
          tempToken.textCount = token.length();
          tempToken.makeStartAt(selEnd);
          token = tempToken;
          x = painter.paint(token, g, x, y, host, this);
        }

        // This token is entirely selected
        else if (token.getOffset() >= selStart && token.getEndOffset() <= selEnd) {
          x = painter.paintSelected(token, g, x, y, host, this);
        }

        // This token is entirely unselected
        else {
          x = painter.paint(token, g, x, y, host, this);
        }

        token = new TokenImpl(orig);
        ((TokenImpl) token).makeStartAt(p);
      }

      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);
    }
  }
Ejemplo n.º 2
0
  /**
   * 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);
    }
  }