模块 java.desktop

软件包 javax.swing

Class JScrollPane.ScrollBar

java.lang.Object

java.awt.Component

java.awt.Container

javax.swing.JComponent

javax.swing.JScrollBar

javax.swing.JScrollPane.ScrollBar

实现的所有接口

Adjustable ， ImageObserver ， MenuContainer ， Serializable ， Accessible ， UIResource

Enclosing class:

JScrollPane

protected class JScrollPane.ScrollBarextends JScrollBarimplements UIResource

默认情况下， JScrollPane创建作为此类实例的滚动条。 Scrollbar会覆盖getUnitIncrement和getBlockIncrement方法，以便在视口的视图为Scrollable ，要求视图计算这些值。 除非已明确设置单位/块增量。

警告：此类的序列化对象与以后的Swing版本不兼容。 当前的序列化支持适用于运行相同版本Swing的应用程序之间的短期存储或RMI。 从1.4开始， java.beans软件包中添加了对所有JavaBeans java.beans长期存储的支持。 请参阅XMLEncoder 。

另请参见：

Scrollable ， JScrollPane.createVerticalScrollBar() ， JScrollPane.createHorizontalScrollBar() ， Serialized Form

嵌套类汇总

嵌套类/接口声明在类 javax.swing.JScrollBar

JScrollBar.AccessibleJScrollBar

嵌套类/接口声明在类 javax.swing.JComponent

JComponent.AccessibleJComponent

嵌套类/接口声明在类 java.awt.Container

Container.AccessibleAWTContainer

嵌套类/接口声明在类 java.awt.Component

Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

字段汇总

声明的属性在类 javax.swing.JScrollBar

blockIncrement, model, orientation, unitIncrement

声明的属性在类 javax.swing.JComponent

listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

声明的属性在类 java.awt.Component

accessibleContext, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields declared in interface java.awt.Adjustable

HORIZONTAL, NO_ORIENTATION, VERTICAL

Fields declared in interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

构造方法摘要

构造方法

构造器	描述
ScrollBar(int orientation)	创建具有指定方向的滚动条。

方法摘要

变量和类型	方法	描述
int	getBlockIncrement(int direction)	如果视口的视图是 Scrollable对象，则计算滚动的块增量。
int	getUnitIncrement(int direction)	如果视口的视图是 Scrollable对象，则计算滚动的单位增量。
void	setBlockIncrement(int blockIncrement)	消息超级设置值，并将 blockIncrementSet实例变量重置为true。
void	setUnitIncrement(int unitIncrement)	消息超级设置值，并将 unitIncrementSet实例变量重置为true。

声明方法的类 javax.swing.JScrollBar

addAdjustmentListener, fireAdjustmentValueChanged, getAccessibleContext, getAdjustmentListeners, getBlockIncrement, getMaximum, getMaximumSize, getMinimum, getMinimumSize, getModel, getOrientation, getUI, getUIClassID, getUnitIncrement, getValue, getValueIsAdjusting, getVisibleAmount, paramString, removeAdjustmentListener, setEnabled, setMaximum, setMinimum, setModel, setOrientation, setUI, setValue, setValueIsAdjusting, setValues, setVisibleAmount, updateUI

声明方法的类 javax.swing.JComponent

addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

声明方法的类 java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate, validateTree

声明方法的类 java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

声明方法的类 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

构造方法详细信息

ScrollBar

public ScrollBar(int orientation)

创建具有指定方向的滚动条。 选项是：

• ScrollPaneConstants.VERTICAL
• ScrollPaneConstants.HORIZONTAL

参数

orientation - 一个整数，指定上面显示的一个合法方向值

从以下版本开始：

1.4

方法详细信息

setUnitIncrement

public void setUnitIncrement(int unitIncrement)

消息超级设置值，并将 unitIncrementSet实例变量重置为true。

Specified by:

setUnitIncrement在界面 Adjustable

重写：

setUnitIncrement类 JScrollBar

参数

unitIncrement - 新的单位增量值，以像素为单位

另请参见：

JScrollBar.getUnitIncrement(int)

getUnitIncrement

public int getUnitIncrement(int direction)

如果视口的视图是Scrollable对象，则计算滚动的单位增量。 否则返回super.getUnitIncrement 。

重写：

getUnitIncrement在类 JScrollBar

参数

direction - 向上/向左滚动小于零，向下/向右滚动大于零

结果

一个整数，以像素为单位，包含单位增量

另请参见：

Scrollable.getScrollableUnitIncrement(java.awt.Rectangle, int, int)

setBlockIncrement

public void setBlockIncrement(int blockIncrement)

消息超级设置值，并将 blockIncrementSet实例变量重置为true。

Specified by:

setBlockIncrement在接口 Adjustable

重写：

setBlockIncrement在类 JScrollBar

参数

blockIncrement - 新块增量值，以像素为单位

另请参见：

JScrollBar.getBlockIncrement()

getBlockIncrement

public int getBlockIncrement(int direction)

如果视口的视图是Scrollable对象，则计算滚动的块增量。 否则， blockIncrement等于视口的宽度或高度。 如果没有视口返回super.getBlockIncrement 。

重写：

getBlockIncrement类 JScrollBar

参数

direction - 向上/向左滚动小于零，向下/向右滚动大于零

结果

一个整数，以像素为单位，包含块增量

另请参见：

Scrollable.getScrollableBlockIncrement(java.awt.Rectangle, int, int)