basicmthumbsliderui.java

tame,扩展了好多SWing组件:JTable

/* (swing1.1.1) */
package tame.slider;

import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Rectangle;

import javax.swing.JComponent;
import javax.swing.JSlider;
import javax.swing.event.ChangeListener;
import javax.swing.event.MouseInputAdapter;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.basic.BasicSliderUI;

/**
@author Nobuo Tamemasa, Andrew Thompson
@version 1.0 09/08/99, 1.1 2004/03/05
*/
public class BasicMThumbSliderUI extends BasicSliderUI
                implements MThumbSliderAdditional {

  MThumbSliderAdditionalUI additonalUi;
  MouseInputAdapter mThumbTrackListener;

  /**  Moved from lower down in 2004 1.1 changes */
  Rectangle zeroRect = new Rectangle();

  public static ComponentUI createUI(JComponent c)    {
    return new BasicMThumbSliderUI((JSlider)c);
  }

  public BasicMThumbSliderUI()   {
    super(null);
  }

  public BasicMThumbSliderUI(JSlider b)   {
    super(b);
  }

  public void installUI(JComponent c)   {
    additonalUi = new MThumbSliderAdditionalUI(this);
    additonalUi.installUI(c);
    mThumbTrackListener = createMThumbTrackListener((JSlider) c);
    super.installUI(c);
  }

  public void uninstallUI(JComponent c) {
    super.uninstallUI(c);
    additonalUi.uninstallUI(c);
    additonalUi = null;
    mThumbTrackListener = null;
  }

  protected MouseInputAdapter createMThumbTrackListener( JSlider slider ) {
    return additonalUi.trackListener;
  }

  protected TrackListener createTrackListener( JSlider slider ) {
    return null;
  }

  protected ChangeListener createChangeListener( JSlider slider ) {
    return additonalUi.changeHandler;
  }

  protected void installListeners( JSlider slider ) {
    slider.addMouseListener(mThumbTrackListener);
    slider.addMouseMotionListener(mThumbTrackListener);
    slider.addFocusListener(focusListener);
    slider.addComponentListener(componentListener);
    slider.addPropertyChangeListener( propertyChangeListener );
    slider.getModel().addChangeListener(changeListener);
  }

  protected void uninstallListeners( JSlider slider ) {
    slider.removeMouseListener(mThumbTrackListener);
    slider.removeMouseMotionListener(mThumbTrackListener);
    slider.removeFocusListener(focusListener);
    slider.removeComponentListener(componentListener);
    slider.removePropertyChangeListener( propertyChangeListener );
    slider.getModel().removeChangeListener(changeListener);
  }

  protected void calculateGeometry() {
    super.calculateGeometry();
    additonalUi.calculateThumbsSize();
    additonalUi.calculateThumbsLocation();
  }

  protected void calculateThumbLocation() {}

  public void paint( Graphics g, JComponent c ) {

    Rectangle clip = g.getClipBounds();
    thumbRect = zeroRect;

    super.paint( g, c );

    int thumbNum = additonalUi.getThumbNum();
    Rectangle[] thumbRects = additonalUi.getThumbRects();

    for (int i=thumbNum-1; 0<=i; i--) {
      if ( clip.intersects( thumbRects[i] ) ) {
        thumbRect = thumbRects[i];

        paintThumb( g );

      }
    }
  }

  public void scrollByBlock(int direction)    {}
  public void scrollByUnit(int direction) {}

  /** MThumbSliderAdditional */
  public Rectangle getTrackRect() {
    return trackRect;
  }

  public Dimension getThumbSize() {
    return super.getThumbSize();
  }

  public int xPositionForValue(int value) {
    return super.xPositionForValue( value);
  }

  public int yPositionForValue(int value) {
    return super.yPositionForValue( value);
  }

}