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org.eclipse.swt.widgets
Class Scale  

java.lang.Object
  org.eclipse.swt.widgets.Widget
      org.eclipse.swt.widgets.Control
          org.eclipse.swt.widgets.Scale

All Implemented Interfaces:

org.eclipse.swt.graphics.Drawable

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public class Scale

extends Control

Instances of the receiver represent a selectable user interface object that present a range of continuous numeric values.

Styles:

HORIZONTAL, VERTICAL

Events:

Selection

Note: Only one of the styles HORIZONTAL and VERTICAL may be specified.

IMPORTANT: This class is intended to be subclassed only within the SWT implementation.

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Field Summary

 

Fields inherited from class org.eclipse.swt.widgets.Control

accessible, cursor, drawCount, enableWindow, fixedHandle, font, layoutData, menu, parent, redrawWindow, toolTipText

 

Fields inherited from class org.eclipse.swt.widgets.Widget

ACTIVATE, BUTTON_PRESS_EVENT, BUTTON_RELEASE_EVENT, CANVAS, CHANGED, CLICKED, COMMIT, CONFIGURE_EVENT, data, DEFAULT_HEIGHT, DEFAULT_WIDTH, DELETE_EVENT, DELETE_RANGE, DELETE_TEXT, DISABLED, display, DISPOSED, ENTER_NOTIFY_EVENT, EVENT, EVENT_AFTER, eventTable, EXPOSE_EVENT, FOCUS, FOCUS_IN_EVENT, FOCUS_OUT_EVENT, handle, HANDLE, HIDE, INSERT_TEXT, KEY_PRESS_EVENT, KEY_RELEASE_EVENT, KEYED_DATA, LEAVE_NOTIFY_EVENT, MAP_EVENT, MENU, MNEMONIC_ACTIVATE, MOTION_NOTIFY_EVENT, OBSCURED, POPUP_MENU, PREEDIT_CHANGED, REALIZE, ROW_ACTIVATED, SCROLL_CHILD, SELECT, SHOW, SHOW_HELP, SIZE_ALLOCATE, state, style, STYLE_SET, SWITCH_PAGE, TEST_COLLAPSE_ROW, TEST_EXPAND_ROW, TOGGLED, UNMAP_EVENT, UNREALIZE, VALUE_CHANGED, VISIBILITY_NOTIFY_EVENT, WINDOW_STATE_EVENT

 

Constructor Summary

Scale(Composite parent, int style)           Constructs a new instance of this class given its parent and a style value describing its behavior and appearance.

 

Method Summary
void	addSelectionListener(org.eclipse.swt.events.SelectionListener listener)           Adds the listener to the collection of listeners who will be notified when the receiver's value changes, by sending it one of the messages defined in the SelectionListener interface.
(package private) static int	checkStyle(int style)
org.eclipse.swt.graphics.Point	computeSize(int wHint, int hHint, boolean changed)           Returns the preferred size of the receiver.
(package private)  void	createHandle(int index)
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 single selection that is the receiver's position.
(package private)  long	gtk_value_changed(long adjustment)
(package private)  void	hookEvents()
void	removeSelectionListener(org.eclipse.swt.events.SelectionListener listener)           Removes the listener from the collection of listeners who will be notified when the receiver's value changes.
void	setIncrement(int value)           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 value)           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 single selection that is the receiver's value to the argument which must be greater than or equal to zero.

 

Methods inherited from class org.eclipse.swt.widgets.Control

_getShell, addControlListener, addFocusListener, addHelpListener, addKeyListener, addMouseListener, addMouseMoveListener, addMouseTrackListener, addPaintListener, addTraverseListener, computeNativeSize, computeSize, computeTabGroup, computeTabList, computeTabRoot, createWidget, defaultFont, deregister, drawGripper, enableWidget, eventHandle, filterKey, findMenus, fixChildren, fixFocus, focusHandle, fontHandle, forceFocus, forceFocus, getAccessible, getBackground, getBackgroundColor, getBaseColor, getBgColor, getBorderWidth, getBounds, getEnabled, getFgColor, getFont, getFontDescription, getForeground, getForegroundColor, getIMCaretPos, getLayoutData, getLocation, getMenu, getMonitor, getParent, getPath, getShell, getSize, getTextColor, getToolTipText, getVisible, gtk_button_press_event, gtk_button_release_event, gtk_commit, gtk_enter_notify_event, gtk_event_after, gtk_expose_event, gtk_focus_in_event, gtk_focus_out_event, gtk_focus, gtk_key_press_event, gtk_key_release_event, gtk_leave_notify_event, gtk_mnemonic_activate, gtk_motion_notify_event, gtk_popup_menu, gtk_preedit_changed, gtk_realize, gtk_show_help, gtk_unrealize, gtk_visibility_notify_event, hasFocus, hoverProc, imHandle, internal_dispose_GC, internal_new_GC, isEnabled, isFocusAncestor, isFocusControl, isReparentable, isShowing, isTabGroup, isTabItem, isVisible, menuShell, mnemonicHit, mnemonicMatch, moveAbove, moveBelow, moveHandle, pack, pack, paintHandle, paintWindow, redraw, redraw, redrawWidget, register, releaseChild, releaseHandle, releaseWidget, removeControlListener, removeFocusListener, removeHelpListener, removeKeyListener, removeMouseListener, removeMouseMoveListener, removeMouseTrackListener, removePaintListener, removeTraverseListener, resizeHandle, sendFocusEvent, sendHelpEvent, sendIMKeyEvent, sendKeyEvent, sendMouseEvent, setBackground, setBackgroundColor, setBackgroundColor, setBounds, setBounds, setBounds, setCapture, setCursor, setCursor, setEnabled, setFocus, setFont, setFontDescription, setForeground, setForegroundColor, setInitialSize, setLayoutData, setLocation, setLocation, setMenu, setParent, setRadioSelection, setRedraw, setSize, setSize, setTabGroupFocus, setTabItemFocus, setToolTipText, setVisible, setZOrder, setZOrder, showMenu, sort, toControl, toControl, toDisplay, toDisplay, topHandle, translateMnemonic, translateMnemonic, translateTraversal, traversalCode, traverse, traverse, traverseEscape, traverseGroup, traverseItem, traverseMnemonic, traversePage, traverseReturn, update, update

 

Methods inherited from class org.eclipse.swt.widgets.Widget

addDisposeListener, addListener, checkBits, checkOrientation, checkParent, checkSubclass, checkWidget, destroyWidget, dispose, error, filterProc, filters, fixMnemonic, fontHeight, getData, getData, getDisplay, getName, getNameText, getStyle, gtk_activate, gtk_changed, gtk_clicked, gtk_configure_event, gtk_delete_event, gtk_delete_range, gtk_delete_text, gtk_event, gtk_hide, gtk_insert_text, gtk_map_event, gtk_row_activated, gtk_scroll_child, gtk_select, gtk_show, gtk_size_allocate, gtk_style_set, gtk_switch_page, gtk_test_collapse_row, gtk_test_expand_row, gtk_timer, gtk_toggled, gtk_unmap_event, gtk_window_state_event, hooks, isDisposed, isListening, isValidSubclass, isValidThread, isValidWidget, menuPositionProc, mnemonicHit, mnemonicMatch, notifyListeners, pixbufCellDataProc, postEvent, postEvent, releaseResources, removeDisposeListener, removeListener, removeListener, sendEvent, sendEvent, sendEvent, sendEvent, setData, setData, setInputState, setKeyState, setOrientation, shellMapProc, textCellDataProc, timerProc, toString, translateTraversal, treeSelectionProc, windowProc, windowProc, windowProc, windowProc

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

Scale

public Scale(Composite parent,
             int style)

Constructs a new instance of this class given its parent and a style value describing its behavior and appearance.

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.

Method Detail

addSelectionListener

public void addSelectionListener(org.eclipse.swt.events.SelectionListener listener)

Adds the listener to the collection of listeners who will be notified when the receiver's value changes, by sending it one of the messages defined in the SelectionListener interface.

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checkStyle

static int checkStyle(int style)

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computeSize

public org.eclipse.swt.graphics.Point computeSize(int wHint,
                                                  int hHint,
                                                  boolean changed)

Description copied from class: Control

Returns the preferred size of the receiver.

The preferred size of a control is the size that it would best be displayed at. The width hint and height hint arguments allow the caller to ask a control questions such as "Given a particular width, how high does the control need to be to show all of the contents?" To indicate that the caller does not wish to constrain a particular dimension, the constant SWT.DEFAULT is passed for the hint.

If the changed flag is true, it indicates that the receiver's contents have changed, therefore any caches that a layout manager containing the control may have been keeping need to be flushed. When the control is resized, the changed flag will be false, so layout manager caches can be retained.

Overrides:

computeSize in class Control

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createHandle

void createHandle(int index)

Overrides:

createHandle in class Widget

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hookEvents

void hookEvents()

Overrides:

hookEvents in class Control

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getIncrement

public int getIncrement()

Returns the amount that the receiver's value will be modified by when the up/down (or right/left) arrows are pressed.

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getMaximum

public int getMaximum()

Returns the maximum value which the receiver will allow.

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getMinimum

public int getMinimum()

Returns the minimum value which the receiver will allow.

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getPageIncrement

public int getPageIncrement()

Returns the amount that the receiver's value will be modified by when the page increment/decrement areas are selected.

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getSelection

public int getSelection()

Returns the single selection that is the receiver's position.

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gtk_value_changed

long gtk_value_changed(long adjustment)

Overrides:

gtk_value_changed in class Widget

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removeSelectionListener

public void removeSelectionListener(org.eclipse.swt.events.SelectionListener listener)

Removes the listener from the collection of listeners who will be notified when the receiver's value changes.

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setIncrement

public void setIncrement(int value)

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.

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setMaximum

public void setMaximum(int value)

Sets the maximum value that the receiver will allow. This new value will be ignored if it is not greater than the receiver's current minimum value. If the new maximum is applied then the receiver's selection value will be adjusted if necessary to fall within its new range.

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setMinimum

public void setMinimum(int value)

Sets the minimum value that the receiver will allow. This new value will be ignored if it is negative or is not less than the receiver's current maximum value. If the new minimum is applied then the receiver's selection value will be adjusted if necessary to fall within its new range.

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setPageIncrement

public void setPageIncrement(int value)

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.

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setSelection

public void setSelection(int value)

Sets the single selection that is the receiver's value to the argument which must be greater than or equal to zero.

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Home >> All >> org >> eclipse >> swt >> [ widgets overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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