public class SynthScrollBarUI extends BasicScrollBarUI implements PropertyChangeListener, SynthUI
JScrollBar 。 
      BasicScrollBarUI.ArrowButtonListener, BasicScrollBarUI.ModelListener, BasicScrollBarUI.PropertyChangeHandler, BasicScrollBarUI.ScrollListener, BasicScrollBarUI.TrackListenerbuttonListener, decrButton, DECREASE_HIGHLIGHT, decrGap, incrButton, INCREASE_HIGHLIGHT, incrGap, isDragging, maximumThumbSize, minimumThumbSize, modelListener, NO_HIGHLIGHT, propertyChangeListener, scrollbar, scrollBarWidth, scrollListener, scrollTimer, thumbColor, thumbDarkShadowColor, thumbHighlightColor, thumbLightShadowColor, thumbRect, trackColor, trackHighlight, trackHighlightColor, trackListener, trackRectDEFAULT, DISABLED, ENABLED, FOCUSED, MOUSE_OVER, PRESSED, SELECTEDBOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST| Constructor and Description | 
|---|
| SynthScrollBarUI() | 
| Modifier and Type | Method and Description | 
|---|---|
| protected void | configureScrollBarColors() | 
| protected JButton | createDecreaseButton(int orientation) | 
| protected JButton | createIncreaseButton(int orientation) | 
| static ComponentUI | createUI(JComponent c) | 
| SynthContext | getContext(JComponent c)
              返回指定组件的上下文。 
             | 
| protected Dimension | getMinimumThumbSize()
              返回拇指的最小可接受尺寸。 
             | 
| Dimension | getPreferredSize(JComponent c)
              垂直滚动条的首选宽度是(非 
              null)增量/减量按钮的最大宽度以及拇指的最小宽度。 | 
| boolean | getSupportsAbsolutePositioning()
              指示用户是否可以用鼠标手势(通常是鼠标中键)绝对定位拇指。 
             | 
| protected void | installDefaults() | 
| protected void | installListeners() | 
| void | paint(Graphics g, JComponent c)
              根据外观和外观绘制指定的组件。 
             | 
| protected void | paint(SynthContext context, Graphics g)
              绘制指定的组件。 
             | 
| void | paintBorder(SynthContext context, Graphics g, int x, int y, int w, int h)
              画边框 
             | 
| protected void | paintThumb(SynthContext context, Graphics g, Rectangle thumbBounds)
              绘制滚动条拇指。 
             | 
| protected void | paintTrack(SynthContext context, Graphics g, Rectangle trackBounds)
              绘制滚动条轨道。 
             | 
| void | propertyChange(PropertyChangeEvent e)
              当绑定属性更改时,此方法将被调用。 
             | 
| protected void | setThumbRollover(boolean active)
              设置鼠标是否当前在拇指上。 
             | 
| protected void | uninstallDefaults() | 
| protected void | uninstallListeners() | 
| void | update(Graphics g, JComponent c)
              通知此UI代理重新绘制指定的组件。 
             | 
addLayoutComponent, createArrowButtonListener, createModelListener, createPropertyChangeListener, createScrollListener, createTrackListener, getMaximumSize, getMaximumThumbSize, getThumbBounds, getTrackBounds, installComponents, installKeyboardActions, installUI, isThumbRollover, layoutContainer, layoutHScrollbar, layoutVScrollbar, minimumLayoutSize, paintDecreaseHighlight, paintIncreaseHighlight, paintThumb, paintTrack, preferredLayoutSize, removeLayoutComponent, scrollByBlock, scrollByUnit, setThumbBounds, uninstallComponents, uninstallKeyboardActions, uninstallUIcontains, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior, getMinimumSizepublic static ComponentUI createUI(JComponent c)
protected void installDefaults()
protected void configureScrollBarColors()
protected void installListeners()
protected void uninstallListeners()
protected void uninstallDefaults()
public SynthContext getContext(JComponent c)
getContext在界面 
            SynthUI 
           c - 组件请求SynthContext。 
           public boolean getSupportsAbsolutePositioning()
getSupportsAbsolutePositioning在 
            BasicScrollBarUI 
           public void update(Graphics g, JComponent c)
paint(SynthContext,Graphics)方法。 
            通常,此方法不需要被子类覆盖。 所有Look和Feel渲染代码应该在paint方法中。 
update在 
            ComponentUI 
           g - 用于绘画的 
            Graphics对象 
           c - 正在涂漆的组件 
           paint(SynthContext,Graphics) 
           public void paint(Graphics g, JComponent c)
 Synth Look and Feel不使用此方法。 绘画由paint(SynthContext,Graphics)处理。 
paint在 
            BasicScrollBarUI 
           g - 用于绘画的 
            Graphics对象 
           c - 正在涂漆的组件 
           paint(SynthContext,Graphics) 
           protected void paint(SynthContext context, Graphics g)
context - 正在绘制的组件的上下文 
           g - 用于绘画的 
            Graphics对象 
           update(Graphics,JComponent) 
           public void paintBorder(SynthContext context, Graphics g, int x, int y, int w, int h)
paintBorder在界面 
            SynthUI 
           context - 组件上下文 
           g - 
            Graphics上画 
           x - X坐标 
           y - Y坐标 
           w - 边框的宽度 
           h - 边框的高度 
           protected void paintTrack(SynthContext context, Graphics g, Rectangle trackBounds)
context - 正在绘制的组件的上下文 
           g - 
            Graphics用于绘画的对象 
           trackBounds - 轨道的边框 
           protected void paintThumb(SynthContext context, Graphics g, Rectangle thumbBounds)
context - 正在绘制的组件的上下文 
           g - 
            Graphics用于绘画的对象 
           thumbBounds - 拇指的边框 
           public Dimension getPreferredSize(JComponent c)
null )增量/减量按钮的最大宽度以及拇指的最小宽度。 
           优选的高度是相同部件的优选高度的总和。 
           水平滚动条的首选尺寸的基础是相似的。 
            preferredSize只计算一次,对此方法的后续调用只返回缓存的大小。 
getPreferredSize在 
            BasicScrollBarUI 
           c -在 
            JScrollBar多数民众赞成委托这种方法给我们 
           BasicScrollBarUI.getMaximumSize(javax.swing.JComponent) , 
            ComponentUI.getMinimumSize(javax.swing.JComponent) 
           protected Dimension getMinimumThumbSize()
警告 :此方法返回的值不应该被修改,它是一个共享静态常量。
getMinimumThumbSize在 
            BasicScrollBarUI 
           BasicScrollBarUI.getMaximumThumbSize() 
           protected JButton createDecreaseButton(int orientation)
protected JButton createIncreaseButton(int orientation)
protected void setThumbRollover(boolean active)
setThumbRollover在 
            BasicScrollBarUI 
           active - True表示缩略图当前处于活动状态。 
           public void propertyChange(PropertyChangeEvent e)
PropertyChangeListener 
          propertyChange在界面 
            PropertyChangeListener 
           e - 描述事件源和已更改的属性的PropertyChangeEvent对象。 
            Submit a bug or feature 
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