metalsliderui.java

来自「linux下建立JAVA虚拟机的源码KAFFE」· Java 代码 · 共 469 行 · 第 1/2 页

                g.drawLine(x + 1, trackY + 1, x + w - 3, trackY + 1);
                g.setColor(UIManager.getColor("Slider.altTrackColor"));
                g.drawLine(x + 1, trackY + 2, x + w - 3, trackY + 2);
                g.setColor(MetalLookAndFeel.getControlShadow());
                g.drawLine(x + 1, trackY + 3, x + w - 3, trackY + 3);
                g.setColor(MetalLookAndFeel.getPrimaryControlShadow());
                g.drawLine(x + 1, trackY + 4, x + w - 3, trackY + 4);
              }
          }
        else if (filledSlider) 
          {
            int xPos = xPositionForValue(slider.getValue());
            int x = (slider.getInverted() ? xPos : trackRect.x);
            int w = (slider.getInverted() ? trackX + trackW - xPos 
                                          : xPos - trackRect.x);
            g.setColor(MetalLookAndFeel.getControlShadow());
            g.fillRect(x + 1, trackY + 1, w - 3, getTrackWidth() - 3);
            if (slider.isEnabled())
              {
                g.setColor(MetalLookAndFeel.getControl());
                g.drawLine(x + 1, trackY + 1, x + w - 3, trackY + 1);
                g.drawLine(x + 1, trackY + 1, x + 1, 
                           trackY + getTrackWidth() - 3);
              }
          }
      }
    else
      {
        int trackX = trackRect.x  + (trackRect.width - getTrackWidth()) / 2;
        int trackY = trackRect.y;
        int trackW = getTrackWidth();
        int trackH = trackRect.height - 1;
        if (slider.isEnabled())
          BasicGraphicsUtils.drawEtchedRect(g, trackX, trackY, trackW, trackH, 
              darkShadowColor, shadowColor, darkShadowColor, highlightColor);
        else
          {
            g.setColor(MetalLookAndFeel.getControlShadow());
            g.drawRect(trackX, trackY, trackW - 2, trackH - 2);
          }

        // Fill track if necessary.
        if (MetalLookAndFeel.getCurrentTheme() instanceof OceanTheme)
          {
            if (slider.isEnabled())
              {
                int yPos = yPositionForValue(slider.getValue());
                int y = (slider.getInverted() ? trackY : yPos);
                int h = (slider.getInverted() ? yPos - trackY 
                        : trackY + trackH - yPos);
                
                g.setColor(MetalLookAndFeel.getWhite());
                g.drawLine(trackX + 1, y + 1, trackX + 1, y + h - 3);
                g.setColor(UIManager.getColor("Slider.altTrackColor"));
                g.drawLine(trackX + 2, y + 1, trackX + 2, y + h - 3);
                g.setColor(MetalLookAndFeel.getControlShadow());
                g.drawLine(trackX + 3, y + 1, trackX + 3, y + h - 3);
                g.setColor(MetalLookAndFeel.getPrimaryControlShadow());
                g.drawLine(trackX + 4, y + 1, trackX + 4, y + h - 3);
              }
          }
        else if (filledSlider) 
          {
          int yPos = yPositionForValue(slider.getValue());
          int y = (slider.getInverted() ? trackY : yPos);
          int h = (slider.getInverted() ? yPos - trackY 
                  : trackY + trackH - yPos);
          g.setColor(MetalLookAndFeel.getControlShadow());
          g.fillRect(trackX + 1, y + 1, getTrackWidth() - 3, h - 3);
          if (slider.isEnabled())
            {
              g.setColor(MetalLookAndFeel.getControl());
              g.drawLine(trackX + 1, y + 1, trackX + trackW - 3, y + 1);
              g.drawLine(trackX + 1, y + 1, trackX + 1, y + h - 3);
            }
          }
      }
  }
  
  /**
   * Draws the focus rectangle for the slider.  The Metal look and feel 
   * indicates that the {@link JSlider} has the focus by changing the color of 
   * the thumb control - this is handled elsewhere and so this method is empty 
   * (it overrides the method in the {@link BasicSliderUI} class to prevent
   * a default focus highlight from being drawn).
   * 
   * @param g  the graphics device.
   */
  public void paintFocus(Graphics g)
  {
    // do nothing as focus is shown by different color on thumb control
  }
  
  /**
   * Returns the size of the thumb icon.
   * 
   * @return The size of the thumb icon.
   */
  protected Dimension getThumbSize()
  {
    if (slider.getOrientation() == JSlider.HORIZONTAL)
      return new Dimension(horizThumbIcon.getIconWidth(), 
              horizThumbIcon.getIconHeight());
    else
      return new Dimension(vertThumbIcon.getIconWidth(), 
              vertThumbIcon.getIconHeight());
  }
  
  /**
   * Returns the length of the major tick marks.
   * 
   * @return The length of the major tick marks.
   */
  public int getTickLength()
  {
    return tickLength + TICK_BUFFER;
  }
  
  /**
   * Returns the track width.
   * 
   * @return The track width.
   */
  protected int getTrackWidth()
  {
    return trackWidth;
  }
  
  /**
   * Returns the track length.
   * 
   * @return The track length.
   */
  protected int getTrackLength()
  {
    return (slider.getOrientation() == JSlider.HORIZONTAL 
            ? tickRect.width : tickRect.height);
  }
  
  /**
   * Returns the thumb overhang.
   * 
   * @return The thumb overhang.
   */
  protected int getThumbOverhang()
  {
    // FIXME:  for what might this method be used?
    return 0;
  }
  
  protected void scrollDueToClickInTrack(int dir)
  {
    // FIXME:  for what might this method be overridden?
    super.scrollDueToClickInTrack(dir);
  }
  
  /**
   * Paints the minor ticks for a slider with a horizontal orientation.
   * 
   * @param g  the graphics device.
   * @param tickBounds  the tick bounds.
   * @param x  the x value for the tick.
   */
  protected void paintMinorTickForHorizSlider(Graphics g, Rectangle tickBounds,
                                              int x)
  {
    // Note the incoming 'g' has a translation in place to get us to the 
    // start of the tick rect already...
    if (slider.isEnabled())
      g.setColor(MetalLookAndFeel.getPrimaryControlShadow());
    else
      g.setColor(MetalLookAndFeel.getControlDisabled());
    g.drawLine(x, TICK_BUFFER, x, TICK_BUFFER + tickLength / 2);
  }
 
  /**
   * Paints the major ticks for a slider with a horizontal orientation.
   * 
   * @param g  the graphics device.
   * @param tickBounds  the tick bounds.
   * @param x  the x value for the tick.
   */
  protected void paintMajorTickForHorizSlider(Graphics g, Rectangle tickBounds,
                                              int x)
  {
    // Note the incoming 'g' has a translation in place to get us to the 
    // start of the tick rect already...
    if (slider.isEnabled())
      g.setColor(MetalLookAndFeel.getPrimaryControlShadow());
    else
      g.setColor(MetalLookAndFeel.getControlDisabled());
    g.drawLine(x, TICK_BUFFER, x, TICK_BUFFER + tickLength);
  }
  
  /**
   * Paints the minor ticks for a slider with a vertical orientation.
   * 
   * @param g  the graphics device.
   * @param tickBounds  the tick bounds.
   * @param y  the y value for the tick.
   */
  protected void paintMinorTickForVertSlider(Graphics g, Rectangle tickBounds,
                                             int y)
  {
    // Note the incoming 'g' has a translation in place to get us to the 
    // start of the tick rect already...
    if (slider.isEnabled())
      g.setColor(MetalLookAndFeel.getPrimaryControlShadow());
    else
      g.setColor(MetalLookAndFeel.getControlDisabled());
    g.drawLine(TICK_BUFFER - 1, y, TICK_BUFFER - 1 + tickLength / 2, y);
  }
  
  /**
   * Paints the major ticks for a slider with a vertical orientation.
   * 
   * @param g  the graphics device.
   * @param tickBounds  the tick bounds.
   * @param y  the y value for the tick.
   */
  protected void paintMajorTickForVertSlider(Graphics g, Rectangle tickBounds,
                                             int y)
  {
    // Note the incoming 'g' has a translation in place to get us to the 
    // start of the tick rect already...
    if (slider.isEnabled())
      g.setColor(MetalLookAndFeel.getPrimaryControlShadow());
    else
      g.setColor(MetalLookAndFeel.getControlDisabled());
    g.drawLine(TICK_BUFFER - 1, y, TICK_BUFFER - 1 + tickLength, y);
  }
  
}