public class Scale extends Control
Note: Only one of the styles HORIZONTAL and VERTICAL may be specified.
IMPORTANT: This class is not intended to be subclassed.
Constructor and Description |
---|
Scale(Composite parent,
int style)
Constructs a new instance of this class given its parent
and a style value describing its behavior and appearance.
|
Modifier and Type | Method and Description |
---|---|
void |
addSelectionListener(SelectionListener listener)
Adds the listener to the collection of listeners who will
be notified when the user changes the receiver's value, by sending
it one of the messages defined in the
SelectionListener
interface. |
int |
getIncrement()
Returns the amount that the receiver's value will be
modified by when the up/down (or right/left) arrows
are pressed.
|
int |
getMaximum()
Returns the maximum value which the receiver will allow.
|
int |
getMinimum()
Returns the minimum value which the receiver will allow.
|
int |
getPageIncrement()
Returns the amount that the receiver's value will be
modified by when the page increment/decrement areas
are selected.
|
int |
getSelection()
Returns the 'selection', which is the receiver's position.
|
void |
removeSelectionListener(SelectionListener listener)
Removes the listener from the collection of listeners who will
be notified when the user changes the receiver's value.
|
void |
setIncrement(int increment)
Sets the amount that the receiver's value will be
modified by when the up/down (or right/left) arrows
are pressed to the argument, which must be at least
one.
|
void |
setMaximum(int value)
Sets the maximum value that the receiver will allow.
|
void |
setMinimum(int value)
Sets the minimum value that the receiver will allow.
|
void |
setPageIncrement(int pageIncrement)
Sets the amount that the receiver's value will be
modified by when the page increment/decrement areas
are selected to the argument, which must be at least
one.
|
void |
setSelection(int value)
Sets the 'selection', which is the receiver's value,
to the argument which must be greater than or equal to zero.
|
addControlListener, addDragDetectListener, addFocusListener, addGestureListener, addHelpListener, addKeyListener, addMenuDetectListener, addMouseListener, addMouseMoveListener, addMouseTrackListener, addMouseWheelListener, addPaintListener, addTouchListener, addTraverseListener, computeSize, computeSize, dragDetect, dragDetect, forceFocus, getAccessible, getBackground, getBackgroundImage, getBorderWidth, getBounds, getCursor, getDragDetect, getEnabled, getFont, getForeground, getLayoutData, getLocation, getMenu, getMonitor, getOrientation, getParent, getRegion, getShell, getSize, getTextDirection, getToolTipText, getTouchEnabled, getVisible, internal_dispose_GC, internal_new_GC, isAutoScalable, isEnabled, isFocusControl, isReparentable, isVisible, moveAbove, moveBelow, pack, pack, print, redraw, redraw, removeControlListener, removeDragDetectListener, removeFocusListener, removeGestureListener, removeHelpListener, removeKeyListener, removeMenuDetectListener, removeMouseListener, removeMouseMoveListener, removeMouseTrackListener, removeMouseWheelListener, removePaintListener, removeTouchListener, removeTraverseListener, requestLayout, setBackground, setBackgroundImage, setBounds, setBounds, setCapture, setCursor, setDragDetect, setEnabled, setFocus, setFont, setForeground, setLayoutData, setLocation, setLocation, setMenu, setOrientation, setParent, setRedraw, setRegion, setSize, setSize, setTextDirection, setToolTipText, setTouchEnabled, setVisible, toControl, toControl, toDisplay, toDisplay, traverse, traverse, traverse, update
addDisposeListener, addListener, checkSubclass, checkWidget, dispose, getData, getData, getDisplay, getListeners, getStyle, isAutoDirection, isDisposed, isListening, notifyListeners, removeDisposeListener, removeListener, removeListener, reskin, setData, setData, toString
public Scale(Composite parent, int style)
The style value is either one of the style constants defined in
class SWT
which is applicable to instances of this
class, or must be built by bitwise OR'ing together
(that is, using the int
"|" operator) two or more
of those SWT
style constants. The class description
lists the style constants that are applicable to the class.
Style bits are also inherited from superclasses.
parent
- a composite control which will be the parent of the new instance (cannot be null)style
- the style of control to constructIllegalArgumentException
- SWTException
- SWT.HORIZONTAL
,
SWT.VERTICAL
,
Widget.checkSubclass()
,
Widget.getStyle()
public void addSelectionListener(SelectionListener listener)
SelectionListener
interface.
widgetSelected
is called when the user changes the receiver's value.
widgetDefaultSelected
is not called.
listener
- the listener which should be notifiedIllegalArgumentException
- SWTException
- SelectionListener
,
removeSelectionListener(org.eclipse.swt.events.SelectionListener)
public int getIncrement()
SWTException
- public int getMaximum()
SWTException
- public int getMinimum()
SWTException
- public int getPageIncrement()
SWTException
- public int getSelection()
SWTException
- public void removeSelectionListener(SelectionListener listener)
listener
- the listener which should no longer be notifiedIllegalArgumentException
- SWTException
- SelectionListener
,
addSelectionListener(org.eclipse.swt.events.SelectionListener)
public void setIncrement(int increment)
increment
- the new increment (must be greater than zero)SWTException
- public void setMaximum(int value)
value
- the new maximum, which must be greater than the current minimumSWTException
- public void setMinimum(int value)
value
- the new minimum, which must be nonnegative and less than the current maximumSWTException
- public void setPageIncrement(int pageIncrement)
pageIncrement
- the page increment (must be greater than zero)SWTException
- public void setSelection(int value)
value
- the new selection (must be zero or greater)SWTException
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