java.awt.peer
Interface ComponentPeer

All Known Subinterfaces:

ButtonPeer, CanvasPeer, CheckboxPeer, ChoicePeer, ContainerPeer, DialogPeer, FileDialogPeer, FramePeer, LabelPeer, LightweightPeer, ListPeer, PanelPeer, ScrollbarPeer, ScrollPanePeer, TextAreaPeer, TextComponentPeer, TextFieldPeer, WindowPeer

public interface ComponentPeer

The peer interfaces are intended only for use in porting the AWT. They are not intended for use by application developers, and developers should not implement peers nor invoke any of the peer methods directly on the peer instances.

Field Summary

static int	DEFAULT_OPERATION
static int	NO_EMBEDDED_CHECK
static int	RESET_OPERATION
static int	SET_BOUNDS
static int	SET_CLIENT_SIZE
static int	SET_LOCATION
static int	SET_SIZE

Method Summary

boolean	canDetermineObscurity()
int	checkImage(Image img, int w, int h, ImageObserver o)
void	coalescePaintEvent(PaintEvent e)
void	createBuffers(int numBuffers, BufferCapabilities caps)
Image	createImage(ImageProducer producer)
Image	createImage(int width, int height)
VolatileImage	createVolatileImage(int width, int height)
void	destroyBuffers()
void	disable() DEPRECATED: Replaced by setEnabled(boolean).
void	dispose()
void	enable() DEPRECATED: Replaced by setEnabled(boolean).
void	flip(BufferCapabilities.FlipContents flipAction)
Image	getBackBuffer()
Rectangle	getBounds()
ColorModel	getColorModel()
FontMetrics	getFontMetrics(Font font)
Graphics	getGraphics()
GraphicsConfiguration	getGraphicsConfiguration()
Point	getLocationOnScreen()
Dimension	getMinimumSize()
Dimension	getPreferredSize()
Toolkit	getToolkit()
void	handleEvent(AWTEvent e)
boolean	handlesWheelScrolling()
void	hide() DEPRECATED: Replaced by setVisible(boolean).
boolean	isFocusable()
boolean	isObscured()
boolean	isReparentSupported() Returns whether this peer supports reparenting to another parent withour destroying the peer
void	layout() Used by lightweight implementations to tell a ComponentPeer to layout its sub-elements.
Dimension	minimumSize() DEPRECATED: Replaced by getMinimumSize().
void	paint(Graphics g)
Dimension	preferredSize() DEPRECATED: Replaced by getPreferredSize().
boolean	prepareImage(Image img, int w, int h, ImageObserver o)
void	print(Graphics g)
void	repaint(long tm, int x, int y, int width, int height)
void	reparent(ContainerPeer newContainer) Reparents this peer to the new parent referenced by newContainer peer Implementation depends on toolkit and container.
boolean	requestFocus(Component lightweightChild, boolean temporary, boolean focusedWindowChangeAllowed, long time)
void	reshape(int x, int y, int width, int height) DEPRECATED: Replaced by setBounds(int, int, int, int).
void	setBackground(Color c)
void	setBounds(int x, int y, int width, int height, int op)
void	setEnabled(boolean b)
void	setFont(Font f)
void	setForeground(Color c)
void	setVisible(boolean b)
void	show() DEPRECATED: Replaced by setVisible(boolean).
void	updateCursorImmediately()

Field Detail

SET_LOCATION

static final int SET_LOCATION

See Also:

Constant Field Values

SET_SIZE

static final int SET_SIZE

See Also:

Constant Field Values

SET_BOUNDS

static final int SET_BOUNDS

See Also:

Constant Field Values

SET_CLIENT_SIZE

static final int SET_CLIENT_SIZE

See Also:

Constant Field Values

RESET_OPERATION

static final int RESET_OPERATION

See Also:

Constant Field Values

NO_EMBEDDED_CHECK

static final int NO_EMBEDDED_CHECK

See Also:

Constant Field Values

DEFAULT_OPERATION

static final int DEFAULT_OPERATION

See Also:

Constant Field Values

Method Detail

isObscured

boolean isObscured()

canDetermineObscurity

boolean canDetermineObscurity()

setVisible

void setVisible(boolean b)

setEnabled

void setEnabled(boolean b)

paint

void paint(Graphics g)

repaint

void repaint(long tm,
             int x,
             int y,
             int width,
             int height)

print

void print(Graphics g)

setBounds

void setBounds(int x,
               int y,
               int width,
               int height,
               int op)

handleEvent

void handleEvent(AWTEvent e)

coalescePaintEvent

void coalescePaintEvent(PaintEvent e)

getLocationOnScreen

Point getLocationOnScreen()

getPreferredSize

Dimension getPreferredSize()

getMinimumSize

Dimension getMinimumSize()

getColorModel

ColorModel getColorModel()

getToolkit

Toolkit getToolkit()

getGraphics

Graphics getGraphics()

getFontMetrics

FontMetrics getFontMetrics(Font font)

dispose

void dispose()

setForeground

void setForeground(Color c)

setBackground

void setBackground(Color c)

setFont

void setFont(Font f)

updateCursorImmediately

void updateCursorImmediately()

requestFocus

boolean requestFocus(Component lightweightChild,
                     boolean temporary,
                     boolean focusedWindowChangeAllowed,
                     long time)

isFocusable

boolean isFocusable()

createImage

Image createImage(ImageProducer producer)

createImage

Image createImage(int width,
                  int height)

createVolatileImage

VolatileImage createVolatileImage(int width,
                                  int height)

prepareImage

boolean prepareImage(Image img,
                     int w,
                     int h,
                     ImageObserver o)

checkImage

int checkImage(Image img,
               int w,
               int h,
               ImageObserver o)

getGraphicsConfiguration

GraphicsConfiguration getGraphicsConfiguration()

handlesWheelScrolling

boolean handlesWheelScrolling()

createBuffers

void createBuffers(int numBuffers,
                   BufferCapabilities caps)
                   throws AWTException

Throws:

AWTException

getBackBuffer

Image getBackBuffer()

flip

void flip(BufferCapabilities.FlipContents flipAction)

destroyBuffers

void destroyBuffers()

reparent

void reparent(ContainerPeer newContainer)

Reparents this peer to the new parent referenced by newContainer peer Implementation depends on toolkit and container.

Parameters:

newContainer - peer of the new parent container

Since:

1.5

isReparentSupported

boolean isReparentSupported()

Returns whether this peer supports reparenting to another parent withour destroying the peer

Returns:

true if appropriate reparent is supported, false otherwise

Since:

1.5

layout

void layout()

Used by lightweight implementations to tell a ComponentPeer to layout its sub-elements. For instance, a lightweight Checkbox needs to layout the box, as well as the text label.

getBounds

Rectangle getBounds()

preferredSize

Dimension preferredSize()

DEPRECATED: Replaced by getPreferredSize().

minimumSize

Dimension minimumSize()

DEPRECATED: Replaced by getMinimumSize().

show

void show()

DEPRECATED: Replaced by setVisible(boolean).

hide

void hide()

DEPRECATED: Replaced by setVisible(boolean).

enable

void enable()

DEPRECATED: Replaced by setEnabled(boolean).

disable

void disable()

DEPRECATED: Replaced by setEnabled(boolean).

reshape

void reshape(int x,
             int y,
             int width,
             int height)

DEPRECATED: Replaced by setBounds(int, int, int, int).