org.eclipse.swt.custom

Class CBanner

java.lang.Object

org.eclipse.swt.widgets.Widget

org.eclipse.swt.widgets.Control

org.eclipse.swt.widgets.Scrollable

org.eclipse.swt.widgets.Composite

org.eclipse.swt.custom.CBanner

All Implemented Interfaces:

Drawable

public class CBanner
extends Composite

Instances of this class implement a Composite that lays out its children and allows programmatic control of the layout. It draws a separator between the left and right children which can be dragged to resize the right control. CBanner is used in the workbench to layout the toolbar area and perspective switching toolbar.

Note that although this class is a subclass of Composite, it does not make sense to set a layout on it.

Styles:

NONE

Events:

(None)

IMPORTANT: This class is not intended to be subclassed.

Since:

3.0

See Also:

Sample code and further information

Structure Diagram

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static int	BEZIER_LEFT
(package private) static int	BEZIER_RIGHT
(package private) static int	BORDER_BOTTOM
(package private) static int	BORDER_STRIPE
(package private) static int	BORDER_TOP
(package private) static int	BORDER1
(package private) Control	bottom
(package private) int[]	curve
(package private) int	curve_indent
(package private) static int	CURVE_TAIL
(package private) int	curve_width
(package private) Rectangle	curveRect
(package private) int	curveStart
(package private) boolean	dragging
(package private) Control	left
(package private) Listener	listener
(package private) static int	MIN_LEFT
(package private) static int	OFFSCREEN
(package private) Cursor	resizeCursor
(package private) Control	right
(package private) int	rightDragDisplacement
(package private) int	rightMinHeight
(package private) int	rightMinWidth
(package private) int	rightWidth
(package private) boolean	simple

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

handle

Constructor Summary

Constructors

Constructor and Description
CBanner(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

Methods

Modifier and Type	Method and Description
(package private) static int[]	bezier(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3, int count)
(package private) static int	checkStyle(int style)
Control	getBottom() Returns the Control that appears on the bottom side of the banner.
Rectangle	getClientArea() Returns a rectangle which describes the area of the receiver which is capable of displaying data (that is, not covered by the "trimmings").
Control	getLeft() Returns the Control that appears on the left side of the banner.
Control	getRight() Returns the Control that appears on the right side of the banner.
Point	getRightMinimumSize() Returns the minimum size of the control that appears on the right of the banner.
int	getRightWidth() Returns the width of the control that appears on the right of the banner.
boolean	getSimple() Returns true if the CBanner is rendered with a simple, traditional shape.
(package private) void	onDispose(Event event)
(package private) void	onMouseDown(int x, int y)
(package private) void	onMouseExit()
(package private) void	onMouseMove(int x, int y)
(package private) void	onMouseUp()
(package private) void	onPaint(GC gc)
(package private) void	onResize()
void	setBottom(Control control) Set the control that appears on the bottom side of the banner.
void	setLayout(Layout layout) Sets the layout which is associated with the receiver to be the argument which may be null.
void	setLeft(Control control) Set the control that appears on the left side of the banner.
void	setRight(Control control) Set the control that appears on the right side of the banner.
void	setRightMinimumSize(Point size) Set the minimum height of the control that appears on the right side of the banner.
void	setRightWidth(int width) Set the width of the control that appears on the right side of the banner.
void	setSimple(boolean simple) Sets the shape that the CBanner will use to render itself.
(package private) void	updateCurve(int height)

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

changed, checkSubclass, computeSize, drawBackground, getBackgroundMode, getChildren, getLayout, getLayoutDeferred, getTabList, isLayoutDeferred, layout, layout, layout, layout, layout, setBackgroundMode, setFocus, setLayoutDeferred, setTabList

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

computeTrim, getHorizontalBar, getScrollbarsMode, getVerticalBar

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

addControlListener, addDragDetectListener, addFocusListener, addGestureListener, addHelpListener, addKeyListener, addMenuDetectListener, addMouseListener, addMouseMoveListener, addMouseTrackListener, addMouseWheelListener, addPaintListener, addTouchListener, addTraverseListener, computeSize, dragDetect, dragDetect, forceFocus, getAccessible, getBackground, getBackgroundImage, getBorderWidth, getBounds, getCursor, getDragDetect, getEnabled, getFont, getForeground, getLayoutData, getLocation, getMenu, getMonitor, getOrientation, getParent, getRegion, getShell, getSize, getToolTipText, getTouchEnabled, getVisible, internal_dispose_GC, internal_new_GC, 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, setBackground, setBackgroundImage, setBounds, setBounds, setCapture, setCursor, setDragDetect, setEnabled, setFont, setForeground, setLayoutData, setLocation, setLocation, setMenu, setOrientation, setParent, setRedraw, setRegion, setSize, setSize, setToolTipText, setTouchEnabled, setVisible, toControl, toControl, toDisplay, toDisplay, traverse, traverse, traverse, update

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

addDisposeListener, addListener, checkWidget, dispose, getData, getData, getDisplay, getListeners, getStyle, isDisposed, isListening, notifyListeners, removeDisposeListener, removeListener, removeListener, reskin, setData, setData, toString

Methods inherited from class java.lang.Object

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

Field Detail

left

Control left

right

Control right

bottom

Control bottom

simple

boolean simple

curve

int[] curve

curveStart

int curveStart

curveRect

Rectangle curveRect

curve_width

int curve_width

curve_indent

int curve_indent

rightWidth

int rightWidth

rightMinWidth

int rightMinWidth

rightMinHeight

int rightMinHeight

resizeCursor

Cursor resizeCursor

dragging

boolean dragging

rightDragDisplacement

int rightDragDisplacement

listener

Listener listener

OFFSCREEN

static final int OFFSCREEN

See Also:

Constant Field Values

BORDER_BOTTOM

static final int BORDER_BOTTOM

See Also:

Constant Field Values

BORDER_TOP

static final int BORDER_TOP

See Also:

Constant Field Values

BORDER_STRIPE

static final int BORDER_STRIPE

See Also:

Constant Field Values

CURVE_TAIL

static final int CURVE_TAIL

See Also:

Constant Field Values

BEZIER_RIGHT

static final int BEZIER_RIGHT

See Also:

Constant Field Values

BEZIER_LEFT

static final int BEZIER_LEFT

See Also:

Constant Field Values

MIN_LEFT

static final int MIN_LEFT

See Also:

Constant Field Values

BORDER1

static int BORDER1

Constructor Detail

CBanner

public CBanner(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.

Parameters:

parent - a widget which will be the parent of the new instance (cannot be null)

style - the style of widget to construct

Throws:

java.lang.IllegalArgumentException -

• ERROR_NULL_ARGUMENT - if the parent is null

SWTException -

• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent

Method Detail

bezier

static int[] bezier(int x0,
           int y0,
           int x1,
           int y1,
           int x2,
           int y2,
           int x3,
           int y3,
           int count)

checkStyle

static int checkStyle(int style)

getBottom

public Control getBottom()

Returns the Control that appears on the bottom side of the banner.

Returns:

the control that appears on the bottom side of the banner or null

Throws:

SWTException -

• ERROR_WIDGET_DISPOSED - if the receiver has been disposed
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

Since:

3.0

getClientArea

public Rectangle getClientArea()

Description copied from class: Scrollable

Returns a rectangle which describes the area of the receiver which is capable of displaying data (that is, not covered by the "trimmings").

Overrides:

getClientArea in class Scrollable

Returns:

the client area

See Also:

Scrollable.computeTrim(int, int, int, int)

getLeft

public Control getLeft()

Returns the Control that appears on the left side of the banner.

Returns:

the control that appears on the left side of the banner or null

Throws:

SWTException -

• ERROR_WIDGET_DISPOSED - if the receiver has been disposed
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

Since:

3.0

getRight

public Control getRight()

Returns the Control that appears on the right side of the banner.

Returns:

the control that appears on the right side of the banner or null

Throws:

SWTException -

• ERROR_WIDGET_DISPOSED - if the receiver has been disposed
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

Since:

3.0

getRightMinimumSize

public Point getRightMinimumSize()

Returns the minimum size of the control that appears on the right of the banner.

Returns:

the minimum size of the control that appears on the right of the banner

Since:

3.1

getRightWidth

public int getRightWidth()

Returns the width of the control that appears on the right of the banner.

Returns:

the width of the control that appears on the right of the banner

Since:

3.0

getSimple

public boolean getSimple()

Returns true if the CBanner is rendered with a simple, traditional shape.

Returns:

true if the CBanner is rendered with a simple shape

Since:

3.0

onDispose

void onDispose(Event event)

onMouseDown

void onMouseDown(int x,
               int y)

onMouseExit

void onMouseExit()

onMouseMove

void onMouseMove(int x,
               int y)

onMouseUp

void onMouseUp()

onPaint

void onPaint(GC gc)

onResize

void onResize()

setBottom

public void setBottom(Control control)

Set the control that appears on the bottom side of the banner. The bottom control is optional. Setting the bottom control to null will remove it from the banner - however, the creator of the control must dispose of the control.

Parameters:

control - the control to be displayed on the bottom or null

Throws:

SWTException -

• ERROR_WIDGET_DISPOSED - if the receiver has been disposed
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
• ERROR_INVALID_ARGUMENT - if the bottom control was not created as a child of the receiver

Since:

3.0

setLayout

public void setLayout(Layout layout)

Sets the layout which is associated with the receiver to be the argument which may be null.

Note: No Layout can be set on this Control because it already manages the size and position of its children.

Overrides:

setLayout in class Composite

Parameters:

layout - the receiver's new layout or null

Throws:

SWTException -

• ERROR_WIDGET_DISPOSED - if the receiver has been disposed
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

setLeft

public void setLeft(Control control)

Set the control that appears on the left side of the banner. The left control is optional. Setting the left control to null will remove it from the banner - however, the creator of the control must dispose of the control.

Parameters:

control - the control to be displayed on the left or null

Throws:

SWTException -

• ERROR_WIDGET_DISPOSED - if the receiver has been disposed
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
• ERROR_INVALID_ARGUMENT - if the left control was not created as a child of the receiver

Since:

3.0

setRight

public void setRight(Control control)

Set the control that appears on the right side of the banner. The right control is optional. Setting the right control to null will remove it from the banner - however, the creator of the control must dispose of the control.

Parameters:

control - the control to be displayed on the right or null

Throws:

SWTException -

• ERROR_WIDGET_DISPOSED - if the receiver has been disposed
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
• ERROR_INVALID_ARGUMENT - if the right control was not created as a child of the receiver

Since:

3.0

setRightMinimumSize

public void setRightMinimumSize(Point size)

Set the minimum height of the control that appears on the right side of the banner.

Parameters:

size - the minimum size of the control on the right

Throws:

SWTException -

• ERROR_WIDGET_DISPOSED - if the receiver has been disposed
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
• ERROR_INVALID_ARGUMENT - if the size is null or the values of size are less than SWT.DEFAULT

Since:

3.1

setRightWidth

public void setRightWidth(int width)

Set the width of the control that appears on the right side of the banner.

Parameters:

width - the width of the control on the right

Throws:

SWTException -

• ERROR_WIDGET_DISPOSED - if the receiver has been disposed
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
• ERROR_INVALID_ARGUMENT - if width is less than SWT.DEFAULT

Since:

3.0

setSimple

public void setSimple(boolean simple)

Sets the shape that the CBanner will use to render itself.

Parameters:

simple - true if the CBanner should render itself in a simple, traditional style

Throws:

SWTException -

• ERROR_WIDGET_DISPOSED - if the receiver has been disposed
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

Since:

3.0

updateCurve

void updateCurve(int height)