Exemplo n.º 1
0
  protected void paintLineHighlight(Graphics gfx, int line, int y) {
    int height = fm.getHeight();
    y += fm.getLeading() + fm.getMaxDescent();

    int selectionStart = textArea.getSelectionStart();
    int selectionEnd = textArea.getSelectionStop();

    if (selectionStart == selectionEnd) {
      if (lineHighlight) {
        gfx.setColor(lineHighlightColor);
        gfx.fillRect(0, y, getWidth(), height);
      }
    } else {
      gfx.setColor(selectionColor);

      int selectionStartLine = textArea.getSelectionStartLine();
      int selectionEndLine = textArea.getSelectionStopLine();
      int lineStart = textArea.getLineStartOffset(line);

      int x1, x2;
      if (textArea.isSelectionRectangular()) {
        int lineLen = textArea.getLineLength(line);
        x1 =
            textArea._offsetToX(
                line,
                Math.min(
                    lineLen, selectionStart - textArea.getLineStartOffset(selectionStartLine)));
        x2 =
            textArea._offsetToX(
                line,
                Math.min(lineLen, selectionEnd - textArea.getLineStartOffset(selectionEndLine)));
        if (x1 == x2) x2++;
      } else if (selectionStartLine == selectionEndLine) {
        x1 = textArea._offsetToX(line, selectionStart - lineStart);
        x2 = textArea._offsetToX(line, selectionEnd - lineStart);
      } else if (line == selectionStartLine) {
        x1 = textArea._offsetToX(line, selectionStart - lineStart);
        x2 = getWidth();
      } else if (line == selectionEndLine) {
        // x1 = 0;
        // hack from stendahl to avoid doing weird side selection thing
        x1 = textArea._offsetToX(line, 0);
        // attempt at getting the gutter too, but doesn't seem to work
        // x1 = textArea._offsetToX(line, -textArea.getHorizontalOffset());
        x2 = textArea._offsetToX(line, selectionEnd - lineStart);
      } else {
        // x1 = 0;
        // hack from stendahl to avoid doing weird side selection thing
        x1 = textArea._offsetToX(line, 0);
        // attempt at getting the gutter too, but doesn't seem to work
        // x1 = textArea._offsetToX(line, -textArea.getHorizontalOffset());
        x2 = getWidth();
      }

      // "inlined" min/max()
      gfx.fillRect(x1 > x2 ? x2 : x1, y, x1 > x2 ? (x1 - x2) : (x2 - x1), height);
    }
  }
Exemplo n.º 2
0
  protected void paintCaret(Graphics gfx, int line, int y) {
    // System.out.println("painting caret " + line + " " + y);
    if (textArea.isCaretVisible()) {
      // System.out.println("caret is visible");
      int offset = textArea.getCaretPosition() - textArea.getLineStartOffset(line);
      int caretX = textArea._offsetToX(line, offset);
      int caretWidth = ((blockCaret || textArea.isOverwriteEnabled()) ? fm.charWidth('w') : 1);
      y += fm.getLeading() + fm.getMaxDescent();
      int height = fm.getHeight();

      // System.out.println("caretX, width = " + caretX + " " + caretWidth);

      gfx.setColor(caretColor);

      if (textArea.isOverwriteEnabled()) {
        gfx.fillRect(caretX, y + height - 1, caretWidth, 1);

      } else {
        // some machines don't like the drawRect for the single
        // pixel caret.. this caused a lot of hell because on that
        // minority of machines, the caret wouldn't show up past
        // the first column. the fix is to use drawLine() in
        // those cases, as a workaround.
        if (caretWidth == 1) {
          gfx.drawLine(caretX, y, caretX, y + height - 1);
        } else {
          gfx.drawRect(caretX, y, caretWidth - 1, height - 1);
        }
        // gfx.drawRect(caretX, y, caretWidth, height - 1);
      }
    }
  }
Exemplo n.º 3
0
    public void doPaint(Graphics g) {
      Graphics2D g2 = (Graphics2D) g;

      g2.setColor(Color.black);

      BufferedImage bimg = new BufferedImage(200, 200, BufferedImage.TYPE_INT_ARGB);
      Graphics ig = bimg.getGraphics();
      Color alphared = new Color(255, 0, 0, 128);
      Color alphagreen = new Color(0, 255, 0, 128);
      Color alphablue = new Color(0, 0, 255, 128);
      ig.setColor(alphared);
      ig.fillRect(0, 0, 200, 200);
      ig.setColor(alphagreen);
      ig.fillRect(25, 25, 150, 150);
      ig.setColor(alphablue);
      ig.fillRect(75, 75, 125, 125);
      g.drawImage(bimg, 10, 25, this);

      GradientPaint gp = new GradientPaint(10.0f, 10.0f, alphablue, 210.0f, 210.0f, alphared, true);
      g2.setPaint(gp);
      g2.fillRect(10, 240, 200, 200);
    }
Exemplo n.º 4
0
  /**
   * Repaints the text.
   *
   * @param gfx The graphics context
   */
  public void paint(Graphics gfx) {
    Graphics2D g2 = (Graphics2D) gfx;
    g2.setRenderingHint(
        RenderingHints.KEY_TEXT_ANTIALIASING,
        antialias
            ? RenderingHints.VALUE_TEXT_ANTIALIAS_ON
            : RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);

    tabSize =
        fm.charWidth(' ')
            * ((Integer) textArea.getDocument().getProperty(PlainDocument.tabSizeAttribute))
                .intValue();

    Rectangle clipRect = gfx.getClipBounds();

    gfx.setColor(getBackground());
    gfx.fillRect(clipRect.x, clipRect.y, clipRect.width, clipRect.height);

    // We don't use yToLine() here because that method doesn't
    // return lines past the end of the document
    int height = fm.getHeight();
    int firstLine = textArea.getFirstLine();
    int firstInvalid = firstLine + clipRect.y / height;
    // Because the clipRect's height is usually an even multiple
    // of the font height, we subtract 1 from it, otherwise one
    // too many lines will always be painted.
    int lastInvalid = firstLine + (clipRect.y + clipRect.height - 1) / height;

    try {
      TokenMarker tokenMarker = textArea.getDocument().getTokenMarker();
      int x = textArea.getHorizontalOffset();

      for (int line = firstInvalid; line <= lastInvalid; line++) {
        paintLine(gfx, tokenMarker, line, x);
      }

      if (tokenMarker != null && tokenMarker.isNextLineRequested()) {
        int h = clipRect.y + clipRect.height;
        repaint(0, h, getWidth(), getHeight() - h);
      }
    } catch (Exception e) {
      System.err.println(
          "Error repainting line" + " range {" + firstInvalid + "," + lastInvalid + "}:");
      e.printStackTrace();
    }
  }