ScrollBar (NASA World Wind)

java.lang.Object
- gov.nasa.worldwind.util.tree.ScrollBar

All Implemented Interfaces:

Renderable
```
public class ScrollBar
extends Object
implements Renderable
```
A scrollbar component. The scrollable range is defined by four values: min, max, value, and extent. value is the current position of the scroll bar. extent represents the visible region. The four values must always satisfy this relationship:
```
   min <= value <= value + extent <= max
 
```

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`class`	`ScrollBar.ScrollControl` Control for the scroll arrows and areas of the scroll bar above and below the knob.
`class`	`ScrollBar.ScrollKnob` Control for dragging the scroll knob.

Field Summary

Fields
Modifier and Type	Field and Description
`protected Insets`	`arrowInsets` Insets used to position the triangle in the scroll arrow box.
`protected int`	`autoScrollDelay` Delay in milliseconds between each step in auto-scroll operation is effect.
`protected String`	`autoScrollIncrement` The amount and direction that the bar scrolls while auto-scrolling.
`protected boolean`	`autoScrolling` Indicates whether an auto-scroll operation is active (such as when the user has clicked and held the mouse on the scroll arrow).
`static String`	`BLOCK_DOWN` Scroll increment for one page down.
`static String`	`BLOCK_UP` Scroll increment for one page up.
`protected Rectangle`	`bounds` Full bounds of the scroll bar.
`protected static Insets`	`DEFAULT_ARROW_INSETS` Default insets that position the triangle of the scroll arrow in its box.
`protected static int`	`DEFAULT_AUTO_SCROLL_DELAY` Default delay, in milliseconds, between auto scroll steps.
`protected static Color`	`DEFAULT_LINE_COLOR` Default color used to draw lines in the scroll bar.
`protected static int`	`DEFAULT_MAX_VALUE` Default scroll range maximum value.
`protected static int`	`DEFAULT_MIN_SCROLL_KNOB_SIZE` Default minimum size, in pixels, of the scroll knob.
`protected static int`	`DEFAULT_MIN_VALUE` Default scroll range minimum value.
`protected static double`	`DEFAULT_OPACITY` Default opacity.
`protected static Color`	`DEFAULT_SCROLL_KNOB_COLOR1` Default first color in the scroll knob gradient.
`protected static Color`	`DEFAULT_SCROLL_KNOB_COLOR2` Default second color in the scroll knob gradient.
`protected static int`	`DEFAULT_UNIT_INCREMENT` Default unit increment.
`protected int`	`extent` The amount of the scroll region that is visible in the frame.
`protected long`	`frameNumber` Identifies frame used to calculate per-frame values.
`protected Color`	`knobColor1` First color of the gradient used to fill the scroll knob.
`protected Color`	`knobColor2` Second color of the gradient used to fill the scroll knob.
`protected Color`	`lineColor` Color applied to lines in the scroll bar.
`protected int`	`maxValue` Maximum value in the scroll range.
`protected int`	`minScrollKnobSize` The minimum size of the scroll knob.
`protected int`	`minValue` Minimum value in the scroll range.
`protected long`	`nextAutoScroll` Time at which the scrollbar should automatically update itself.
`protected double`	`opacity` Opacity of the scroll bar knob.
`protected String`	`orientation` Scroll bar orientation, either `AVKey.HORIZONTAL` or `AVKey.VERTICAL`.
`protected PickSupport`	`pickSupport` Support for setting up and restoring picking state, and resolving the picked object.
`protected int`	`scrollArrowSize` Size, in pixels, of the scroll arrow square.
`protected Rectangle`	`scrollBounds` Bounds of the scroll track part of the scroll bar.
`protected Rectangle`	`scrollDownBarBounds` Bounds of the scroll bar area below the knob.
`protected HotSpot`	`scrollDownBlockControl` HotSpot to handle input on page down control.
`protected HotSpot`	`scrollDownControl` HotSpot to handle input on the scroll down control.
`protected Rectangle`	`scrollDownControlBounds` Bounds of the "down arrow" control.
`protected Rectangle`	`scrollKnobBounds` Bounds of the scroll knob.
`protected ScrollBar.ScrollKnob`	`scrollKnobControl` HotSpot to handle input on the scroll knob.
`protected Rectangle`	`scrollUpBarBounds` Bounds of the scroll bar area above the knob.
`protected HotSpot`	`scrollUpBlockControl` HotSpot to handle input on page up control.
`protected HotSpot`	`scrollUpControl` HotSpot to handle input on the scroll up control.
`protected Rectangle`	`scrollUpControlBounds` Bounds of the "up arrow" control.
`static String`	`UNIT_DOWN` Scroll increment for one unit down.
`static String`	`UNIT_UP` Scroll increment for one unit up.
`protected int`	`unitIncrement` Amount that the scroll bar scrolls when the up or down arrow is clicked.
`protected int`	`value` Current scroll bar value.

Constructor Summary

Constructors
Constructor and Description
`ScrollBar(HotSpot parent)` Create a scroll bar in the vertical orientation.
`ScrollBar(HotSpot parent, String orientation)` Create a scroll bar with an orientation.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`protected boolean`	`canDrawInBounds()` Determines if the scrollbar is able to draw within its bounds.
`protected void`	`computeBounds()` Compute the bounds of the scroll bar.
`protected void`	`doPick(DrawContext dc)` Pick the scroll bar.
`protected void`	`draw(DrawContext dc)` Draw the scroll bar.
`protected void`	`drawPickableQuad(DrawContext dc, Object pickObject, Rectangle bounds)` Draw a filled quad in a unique pick color.
`protected void`	`drawQuad(DrawContext dc, Rectangle bounds)` Draw the vertices of a quadrilateral.
`protected void`	`drawTriangle(DrawContext dc, float rotation, Rectangle bounds, Insets insets)` Draw a triangle for one of the scroll bar controls.
`int`	`getAutoScrollDelay()` Indicates how frequently the scrollbar updates while one of the scroll arrows is pressed.
`int`	`getBlockIncrement()` Get the block increment.
`Rectangle`	`getBounds()` Get the bounds of the scroll bar.
`int`	`getExtent()` Get the extent.
`Color[]`	`getKnobColor()` Get the color of scroll knob.
`protected int`	`getKnobSize(int scrollAreaSize)` Get the size of the scroll knob, in pixels.
`Color`	`getLineColor()` Get the color used to draw the lines of the scroll bar boundary and the scroll arrows.
`int`	`getMaxValue()` Get the maximum value in the scroll range.
`int`	`getMinScrollKnobSize()` Indicates the minimum size of the scrollbar knob, in pixels.
`int`	`getMinValue()` Get the minimum value in the scroll range.
`double`	`getOpacity()` Indicates the opacity of the scroll knob.
`String`	`getOrientation()` Get the scroll bar orientation.
`protected int`	`getScrollArrowSize()` Get the height of the scroll arrow controls at the top and bottom of the scroll bar.
`int`	`getUnitIncrement()` Get the unit increment.
`int`	`getValue()` Get the current value of the scroll bar.
`double`	`getValueAsPercentage()` Get the value as a percentage of the scroll range.
`protected void`	`initializeUIControls(HotSpot parent)` Initialize the objects that represent the UI controls.
`boolean`	`isAutoScrolling()` Is the scroll bar auto-scrolling?
`void`	`render(DrawContext dc)` Draw the scroll bar.
`void`	`scroll(int amount)` Adjust the scroll value.
`void`	`scroll(String amount)` Adjust the scroll bar by the unit amount or the block amount.
`void`	`setAutoScrollDelay(int delay)` Specifies how often the scrollbar will update itself when one of the scroll arrows is pressed.
`void`	`setBounds(Rectangle bounds)` Set the bounds of the scroll bar.
`void`	`setExtent(int extent)` Set the extent.
`void`	`setKnobColor(Color color1, Color color2)` Set the color of scroll knob.
`void`	`setLineColor(Color color)` Set the color of the lines of the scroll bar boundary.
`void`	`setMaxValue(int maxValue)` Set the maximum value in the scroll range.
`void`	`setMinScrollKnobSize(int minSize)` Specifies the minimum size of the scrollbar knob, in pixels.
`void`	`setMinValue(int minValue)` Set the minimum value in the scroll range.
`void`	`setOpacity(double opacity)` Specifies the opacity of the scroll knob.
`void`	`setOrientation(String orientation)` Set the scroll bar orientation.
`void`	`setUnitIncrement(int unitIncrement)` Set the unit increment.
`void`	`setValue(int value)` Set the value of the scroll bar.
`void`	`startAutoScroll(String increment)` Start an auto-scroll operation.
`void`	`stopAutoScroll()` Stop an auto-scroll operation.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - arrowInsets
```
protected Insets arrowInsets
```
    Insets used to position the triangle in the scroll arrow box.
  - autoScrollDelay
```
protected int autoScrollDelay
```
    Delay in milliseconds between each step in auto-scroll operation is effect. When auto-scrolling the bar will scroll by the autoScrollIncrement every autoScrollDelay milliseconds.
  - autoScrollIncrement
```
protected String autoScrollIncrement
```
    The amount and direction that the bar scrolls while auto-scrolling. One of UNIT_UP, UNIT_DOWN, BLOCK_UP, BLOCK_DOWN.
  - autoScrolling
```
protected boolean autoScrolling
```
    Indicates whether an auto-scroll operation is active (such as when the user has clicked and held the mouse on the scroll arrow).
  - BLOCK_DOWN
```
public static final String BLOCK_DOWN
```
    Scroll increment for one page down.
    
    See Also:
    
    Constant Field Values
  - BLOCK_UP
```
public static final String BLOCK_UP
```
    Scroll increment for one page up.
    
    See Also:
    
    Constant Field Values
  - bounds
```
protected Rectangle bounds
```
    Full bounds of the scroll bar.
  - DEFAULT_ARROW_INSETS
```
protected static final Insets DEFAULT_ARROW_INSETS
```
    Default insets that position the triangle of the scroll arrow in its box.
  - DEFAULT_AUTO_SCROLL_DELAY
```
protected static final int DEFAULT_AUTO_SCROLL_DELAY
```
    Default delay, in milliseconds, between auto scroll steps.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_LINE_COLOR
```
protected static final Color DEFAULT_LINE_COLOR
```
    Default color used to draw lines in the scroll bar.
  - DEFAULT_MAX_VALUE
```
protected static final int DEFAULT_MAX_VALUE
```
    Default scroll range maximum value.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_MIN_SCROLL_KNOB_SIZE
```
protected static final int DEFAULT_MIN_SCROLL_KNOB_SIZE
```
    Default minimum size, in pixels, of the scroll knob.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_MIN_VALUE
```
protected static final int DEFAULT_MIN_VALUE
```
    Default scroll range minimum value.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_OPACITY
```
protected static final double DEFAULT_OPACITY
```
    Default opacity.
    
    See Also:
    
    Constant Field Values
  - DEFAULT_SCROLL_KNOB_COLOR1
```
protected static final Color DEFAULT_SCROLL_KNOB_COLOR1
```
    Default first color in the scroll knob gradient.
  - DEFAULT_SCROLL_KNOB_COLOR2
```
protected static final Color DEFAULT_SCROLL_KNOB_COLOR2
```
    Default second color in the scroll knob gradient.
  - DEFAULT_UNIT_INCREMENT
```
protected static final int DEFAULT_UNIT_INCREMENT
```
    Default unit increment.
    
    See Also:
    
    Constant Field Values
  - extent
```
protected int extent
```
    The amount of the scroll region that is visible in the frame.
  - frameNumber
```
protected long frameNumber
```
    Identifies frame used to calculate per-frame values.
  - knobColor1
```
protected Color knobColor1
```
    First color of the gradient used to fill the scroll knob.
  - knobColor2
```
protected Color knobColor2
```
    Second color of the gradient used to fill the scroll knob.
  - lineColor
```
protected Color lineColor
```
    Color applied to lines in the scroll bar.
  - maxValue
```
protected int maxValue
```
    Maximum value in the scroll range.
  - minScrollKnobSize
```
protected int minScrollKnobSize
```
    The minimum size of the scroll knob. The size of the knob will adjust to the scroll extent, but will never get smaller than this size. This prevents the knob from shrinking to a single pixels if the scroll range is very large.
  - minValue
```
protected int minValue
```
    Minimum value in the scroll range.
  - nextAutoScroll
```
protected long nextAutoScroll
```
    Time at which the scrollbar should automatically update itself.
  - opacity
```
protected double opacity
```
    Opacity of the scroll bar knob.
  - orientation
```
protected String orientation
```
    Scroll bar orientation, either AVKey.HORIZONTAL or AVKey.VERTICAL.
  - pickSupport
```
protected PickSupport pickSupport
```
    Support for setting up and restoring picking state, and resolving the picked object.
  - scrollArrowSize
```
protected int scrollArrowSize
```
    Size, in pixels, of the scroll arrow square.
  - scrollBounds
```
protected Rectangle scrollBounds
```
    Bounds of the scroll track part of the scroll bar. This is the region in which the scroll knob moves, and excludes the scroll up and down arrows.
  - scrollDownBarBounds
```
protected Rectangle scrollDownBarBounds
```
    Bounds of the scroll bar area below the knob.
  - scrollDownBlockControl
```
protected HotSpot scrollDownBlockControl
```
    HotSpot to handle input on page down control.
  - scrollDownControl
```
protected HotSpot scrollDownControl
```
    HotSpot to handle input on the scroll down control.
  - scrollDownControlBounds
```
protected Rectangle scrollDownControlBounds
```
    Bounds of the "down arrow" control.
  - scrollKnobBounds
```
protected Rectangle scrollKnobBounds
```
    Bounds of the scroll knob.
  - scrollKnobControl
```
protected ScrollBar.ScrollKnob scrollKnobControl
```
    HotSpot to handle input on the scroll knob.
  - scrollUpBarBounds
```
protected Rectangle scrollUpBarBounds
```
    Bounds of the scroll bar area above the knob.
  - scrollUpBlockControl
```
protected HotSpot scrollUpBlockControl
```
    HotSpot to handle input on page up control.
  - scrollUpControl
```
protected HotSpot scrollUpControl
```
    HotSpot to handle input on the scroll up control.
  - scrollUpControlBounds
```
protected Rectangle scrollUpControlBounds
```
    Bounds of the "up arrow" control.
  - UNIT_DOWN
```
public static final String UNIT_DOWN
```
    Scroll increment for one unit down.
    
    See Also:
    
    Constant Field Values
  - UNIT_UP
```
public static final String UNIT_UP
```
    Scroll increment for one unit up.
    
    See Also:
    
    Constant Field Values
  - unitIncrement
```
protected int unitIncrement
```
    Amount that the scroll bar scrolls when the up or down arrow is clicked.
  - value
```
protected int value
```
    Current scroll bar value.
- Constructor Detail
  - ScrollBar
```
public ScrollBar(HotSpot parent)
```
    Create a scroll bar in the vertical orientation.
    
    Parameters:
    
    parent - The screen component that contains the scroll bar. Input events that cannot be handled by the scroll bar will be passed to this component. May be null.
  - ScrollBar
```
public ScrollBar(HotSpot parent,
                 String orientation)
```
    Create a scroll bar with an orientation.
    
    Parameters:
    
    orientation - Either AVKey.VERTICAL or AVKey.HORIZONTAL.
    
    parent - The screen component that contains the scroll bar. Input events that cannot be handled by the scroll bar will be passed to this component. May be null.
- Method Detail
  - canDrawInBounds
```
protected boolean canDrawInBounds()
```
    Determines if the scrollbar is able to draw within its bounds.
    
    Returns:
    
    true if the scroll bar is able to draw within the bounds, or false if the bounds are too small to draw without distortion.
  - computeBounds
```
protected void computeBounds()
```
    Compute the bounds of the scroll bar.
  - doPick
```
protected void doPick(DrawContext dc)
```
    Pick the scroll bar.
    
    Parameters:
    
    dc - Current draw context.
  - draw
```
protected void draw(DrawContext dc)
```
    Draw the scroll bar.
    
    Parameters:
    
    dc - Current draw context.
  - drawPickableQuad
```
protected void drawPickableQuad(DrawContext dc,
                                Object pickObject,
                                Rectangle bounds)
```
    Draw a filled quad in a unique pick color. This method must be called between glBegin(GL.GL_QUADS) and glEnd().
    
    Parameters:
    
    dc - Current draw context.
    
    pickObject - User object to attach to the picked object.
    
    bounds - Bounds of the quad.
  - drawQuad
```
protected void drawQuad(DrawContext dc,
                        Rectangle bounds)
```
    Draw the vertices of a quadrilateral. This method must be called between glBegin(GL.GL_QUADS) and glEnd().
    
    Parameters:
    
    dc - Current draw context.
    
    bounds - Bounds of the quad.
  - drawTriangle
```
protected void drawTriangle(DrawContext dc,
                            float rotation,
                            Rectangle bounds,
                            Insets insets)
```
    Draw a triangle for one of the scroll bar controls.
    
    Parameters:
    
    dc - Draw context.
    
    rotation - Rotation to apply to the triangle. 0 rotation produces a triangle pointing to the right. Rotation must be one of: 0, 90, -90, or 180.
    
    bounds - The bounds of the scroll control. The arrow must be drawn within this rectangle.
    
    insets - Insets to apply to the bounds.
  - getAutoScrollDelay
```
public int getAutoScrollDelay()
```
    Indicates how frequently the scrollbar updates while one of the scroll arrows is pressed.
    
    Returns:
    
    The delay, in milliseconds, between scrollbar updates.
  - getBlockIncrement
```
public int getBlockIncrement()
```
    Get the block increment. This is the amount that the scroll bar scrolls by when the bar is clicked above or below the knob.
    
    Returns:
    
    The block increment. This implementation returns the extent, so the scroll bar will adjust by a full visible page.
  - getBounds
```
public Rectangle getBounds()
```
    Get the bounds of the scroll bar.
    
    Returns:
    
    Scroll bar bounds.
  - getExtent
```
public int getExtent()
```
    Get the extent. The extent the amount of the scrollable region that is visible.
    
    Returns:
    
    The extent.
    
    See Also:
    
    setExtent(int)
  - getKnobColor
```
public Color[] getKnobColor()
```
    Get the color of scroll knob. The knob is drawn with a gradient made up of two colors.
    
    Returns:
    
    Two element array containing the two colors that form the gradient.
    
    See Also:
    
    setKnobColor(java.awt.Color, java.awt.Color), getLineColor()
  - getKnobSize
```
protected int getKnobSize(int scrollAreaSize)
```
    Get the size of the scroll knob, in pixels.
    
    Parameters:
    
    scrollAreaSize - The size of the scroll area, in pixels.
    
    Returns:
    
    Size of the scroll knob, in pixels.
  - getLineColor
```
public Color getLineColor()
```
    Get the color used to draw the lines of the scroll bar boundary and the scroll arrows.
    
    Returns:
    
    Color used for the scroll bar lines.
    
    See Also:
    
    setLineColor(java.awt.Color), getKnobColor()
  - getMaxValue
```
public int getMaxValue()
```
    Get the maximum value in the scroll range.
    
    Returns:
    
    Maximum value.
    
    See Also:
    
    getMinValue(), setMaxValue(int)
  - getMinScrollKnobSize
```
public int getMinScrollKnobSize()
```
    Indicates the minimum size of the scrollbar knob, in pixels.
    
    Returns:
    
    Minimum size of the knob in pixels.
  - getMinValue
```
public int getMinValue()
```
    Get the minimum value in the scroll range.
    
    Returns:
    
    Minimum value.
  - getOpacity
```
public double getOpacity()
```
    Indicates the opacity of the scroll knob.
    
    Returns:
    
    Scroll knob opacity.
  - getOrientation
```
public String getOrientation()
```
    Get the scroll bar orientation.
    
    Returns:
    
    The scroll bar orientation, either AVKey.VERTICAL or AVKey.HORIZONTAL.
  - getScrollArrowSize
```
protected int getScrollArrowSize()
```
    Get the height of the scroll arrow controls at the top and bottom of the scroll bar.
    
    Returns:
    
    Height of arrow control, in pixels.
  - getUnitIncrement
```
public int getUnitIncrement()
```
    Get the unit increment. This is the amount that the scroll bar scrolls by when one of the arrow controls is clicked.
    
    Returns:
    
    Unit increment.
    
    See Also:
    
    setUnitIncrement(int)
  - getValue
```
public int getValue()
```
    Get the current value of the scroll bar.
    
    Returns:
    
    Current value. The value is clamped to the range [minValue : maxValue - extent].
  - getValueAsPercentage
```
public double getValueAsPercentage()
```
    Get the value as a percentage of the scroll range.
    
    Returns:
    
    Current value as percentage.
  - initializeUIControls
```
protected void initializeUIControls(HotSpot parent)
```
    Initialize the objects that represent the UI controls.
    
    Parameters:
    
    parent - The screen component that contains the scroll bar. Input events that cannot be handled by the scroll bar will be passed to this component. May be null.
  - isAutoScrolling
```
public boolean isAutoScrolling()
```
    Is the scroll bar auto-scrolling?
    
    Returns:
    
    True if an auto-scroll operation is in progress.
    
    See Also:
    
    startAutoScroll(String), stopAutoScroll()
  - render
```
public void render(DrawContext dc)
```
    Draw the scroll bar. The scroll will not draw its bounds are too small to draw without distortion.
    
    Specified by:
    
    render in interface Renderable
    
    Parameters:
    
    dc - the DrawContext to be used
    
    See Also:
    
    DrawContext
  - scroll
```
public void scroll(int amount)
```
    Adjust the scroll value.
    
    Parameters:
    
    amount - Amount to add to the current value. A positive value indicates a scroll down; a negative value indicates a scroll up.
  - scroll
```
public void scroll(String amount)
```
    Adjust the scroll bar by the unit amount or the block amount.
    
    Parameters:
    
    amount - One of UNIT_UP, UNIT_DOWN, BLOCK_UP, or BLOCK_DOWN.
  - setAutoScrollDelay
```
public void setAutoScrollDelay(int delay)
```
    Specifies how often the scrollbar will update itself when one of the scroll arrows is pressed.
    
    Parameters:
    
    delay - Delay in milliseconds between scrollbar updates. A smaller number makes the scrollbar scroll faster, a larger number makes it scroll slower. The delay may not be negative.
  - setBounds
```
public void setBounds(Rectangle bounds)
```
    Set the bounds of the scroll bar.
    
    Parameters:
    
    bounds - New bounds.
  - setExtent
```
public void setExtent(int extent)
```
    Set the extent. The extent the amount of the scrollable region that is visible. This method may change the value of the scroll bar to maintain the relationship:
```
   min <= value <= value + extent <= max
 
```
    Parameters:
    
    extent - New extent. If extent is greater than the range of the scroll bar (max - min), then the extent will be set to the maximum valid value.
    
    See Also:
    
    getExtent()
  - setKnobColor
```
public void setKnobColor(Color color1,
                         Color color2)
```
    Set the color of scroll knob. The knob is drawn with a gradient made up of two colors.
    
    Parameters:
    
    color1 - First color in the gradient.
    
    color2 - Second color in the gradient.
    
    See Also:
    
    getKnobColor(), setLineColor(java.awt.Color)
  - setLineColor
```
public void setLineColor(Color color)
```
    Set the color of the lines of the scroll bar boundary. This color is also used for the arrows in the scroll controls.
    
    Parameters:
    
    color - Color for lines and scroll arrows.
    
    See Also:
    
    getLineColor(), setKnobColor(java.awt.Color, java.awt.Color)
  - setMaxValue
```
public void setMaxValue(int maxValue)
```
    Set the maximum value in the scroll range.
    
    Parameters:
    
    maxValue - New maximum.
  - setMinScrollKnobSize
```
public void setMinScrollKnobSize(int minSize)
```
    Specifies the minimum size of the scrollbar knob, in pixels.
    
    Parameters:
    
    minSize - Minimum size of the knob in pixels.
  - setMinValue
```
public void setMinValue(int minValue)
```
    Set the minimum value in the scroll range.
    
    Parameters:
    
    minValue - New minimum.
  - setOpacity
```
public void setOpacity(double opacity)
```
    Specifies the opacity of the scroll knob.
    
    Parameters:
    
    opacity - New opacity.
  - setOrientation
```
public void setOrientation(String orientation)
```
    Set the scroll bar orientation.
    
    Parameters:
    
    orientation - The scroll bar orientation, either AVKey.VERTICAL or AVKey.HORIZONTAL.
  - setUnitIncrement
```
public void setUnitIncrement(int unitIncrement)
```
    Set the unit increment.
    
    Parameters:
    
    unitIncrement - New unit increment. Must be a positive number.
    
    See Also:
    
    getUnitIncrement()
  - setValue
```
public void setValue(int value)
```
    Set the value of the scroll bar. The value is clamped to the range [minValue : maxValue - extent].
    
    Parameters:
    
    value - New value.
  - startAutoScroll
```
public void startAutoScroll(String increment)
```
    Start an auto-scroll operation. During auto-scroll, the scroll bar will adjust its value and repaint continuously until the auto-scroll is stopped.
    
    Parameters:
    
    increment - Amount to adjust scroll bar each time. One of UNIT_UP, UNIT_DOWN, BLOCK_UP, or BLOCK_DOWN.
    
    See Also:
    
    stopAutoScroll(), isAutoScrolling(), scroll(String)
  - stopAutoScroll
```
public void stopAutoScroll()
```
    Stop an auto-scroll operation.
    
    See Also:
    
    startAutoScroll(String), isAutoScrolling()

Class ScrollBar

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

arrowInsets

autoScrollDelay

autoScrollIncrement

autoScrolling

BLOCK_DOWN

BLOCK_UP

bounds

DEFAULT_ARROW_INSETS

DEFAULT_AUTO_SCROLL_DELAY

DEFAULT_LINE_COLOR

DEFAULT_MAX_VALUE

DEFAULT_MIN_SCROLL_KNOB_SIZE

DEFAULT_MIN_VALUE

DEFAULT_OPACITY

DEFAULT_SCROLL_KNOB_COLOR1

DEFAULT_SCROLL_KNOB_COLOR2

DEFAULT_UNIT_INCREMENT

extent

frameNumber

knobColor1

knobColor2

lineColor

maxValue

minScrollKnobSize

minValue

nextAutoScroll

opacity

orientation

pickSupport

scrollArrowSize

scrollBounds

scrollDownBarBounds

scrollDownBlockControl

scrollDownControl

scrollDownControlBounds

scrollKnobBounds

scrollKnobControl

scrollUpBarBounds

scrollUpBlockControl

scrollUpControl

scrollUpControlBounds

UNIT_DOWN

UNIT_UP

unitIncrement

value

Constructor Detail

ScrollBar

ScrollBar

Method Detail

canDrawInBounds

computeBounds

doPick

draw

drawPickableQuad

drawQuad

drawTriangle

getAutoScrollDelay

getBlockIncrement

getBounds

getExtent

getKnobColor

getKnobSize

getLineColor

getMaxValue

getMinScrollKnobSize

getMinValue

getOpacity

getOrientation

getScrollArrowSize

getUnitIncrement

getValue

getValueAsPercentage

initializeUIControls