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 |
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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。
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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。
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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。
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