FileDocCategorySizeDatePackage
Highlights.javaAPI DocExample2132Mon Apr 05 10:31:44 BST 1999None

Highlights

public class Highlights extends ApplicationFrame

Fields Summary
private TextLayout
mTextLayout
private TextHitInfo
mFirstHit
private TextHitInfo
mSecondHit
private int
mX
private int
mY
Constructors Summary
public Highlights()


    
    super("Highlights v1.0");
    addMouseListener(new MouseAdapter() {
      public void mousePressed(MouseEvent me) {
        mFirstHit = mTextLayout.hitTestChar(
            me.getX() - mX, me.getY() - mY);
        mSecondHit = null;
      }
      public void mouseReleased(MouseEvent me) {
        mSecondHit = mTextLayout.hitTestChar(
            me.getX() - mX, me.getY() - mY);
        repaint();
      }
    });
    addMouseMotionListener(new MouseMotionAdapter() {
      public void mouseDragged(MouseEvent me) {
        mSecondHit = mTextLayout.hitTestChar(
            me.getX() - mX, me.getY() - mY);
        repaint();
      }
    });
Methods Summary
public static voidmain(java.lang.String[] args)

    Frame f = new Highlights();
    f.setVisible(true);
public voidpaint(java.awt.Graphics g)

    Graphics2D g2 = (Graphics2D)g;

    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
        RenderingHints.VALUE_ANTIALIAS_ON);
    g2.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
        RenderingHints.VALUE_FRACTIONALMETRICS_ON);
    
    String s = "Camelopardalis";
    Font font = new Font("Serif", Font.PLAIN, 32);
    
    if (mTextLayout == null) {
      FontRenderContext frc = g2.getFontRenderContext();
      mTextLayout = new TextLayout(s, font, frc);
    }
    
    // Draw the highlight.
    if (mFirstHit != null && mSecondHit != null) {
      Shape base = mTextLayout.getLogicalHighlightShape(
          mFirstHit.getInsertionIndex(), mSecondHit.getInsertionIndex());
      AffineTransform at = AffineTransform.getTranslateInstance(mX, mY);
      Shape highlight = at.createTransformedShape(base);
      g2.setPaint(Color.green);
      g2.fill(highlight);
    }
    
    g2.setPaint(Color.black);
    mTextLayout.draw(g2, mX, mY);