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java.awt
Class GraphicsDevice  

java.lang.Object
  java.awt.GraphicsDevice

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public abstract class GraphicsDevice

extends java.lang.Object

This describes a graphics device available to the given environment. This includes screen and printer devices, and the different configurations for each device. Also, this allows you to create virtual devices which operate over a multi-screen environment.

Since:

1.3

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Field Summary
private  Window	full_screen           The current full-screen window, or null if there is none.
private  Rectangle	fullScreenOldBounds           The bounds of the fullscreen window before it has been switched to full screen.
private  DisplayMode	mode           The current display mode, or null if unknown.
static int	TYPE_IMAGE_BUFFER           Device is an image buffer not visible to the user.
static int	TYPE_PRINTER           Device is a printer.
static int	TYPE_RASTER_SCREEN           Device is a raster screen.

 

Constructor Summary
protected	GraphicsDevice()           The default constructor.

 

Method Summary
int	getAvailableAcceleratedMemory()           Return the number of bytes available in accelerated memory on this device.
GraphicsConfiguration	getBestConfiguration(GraphicsConfigTemplate template)           Return the best configuration, according to the criteria in the given template.
abstract  GraphicsConfiguration[]	getConfigurations()           Return all configurations valid for this device.
abstract  GraphicsConfiguration	getDefaultConfiguration()           Return the default configuration for this device.
DisplayMode	getDisplayMode()           Returns the current display mode of this device, or null if unknown.
DisplayMode[]	getDisplayModes()           Return an array of all available display modes.
Window	getFullScreenWindow()           Returns the current full-screen window of the device, or null if no window is full-screen.
abstract  java.lang.String	getIDstring()           Returns an identification string for the device.
abstract  int	getType()           Returns the type of the device.
boolean	isDisplayChangeSupported()           Returns whether this device supports low-level display changes.
boolean	isFullScreenSupported()           Returns true if the device supports full-screen exclusive mode.
void	setDisplayMode(DisplayMode mode)           Sets the display mode.
void	setFullScreenWindow(Window w)           Toggle the given window between full screen and normal mode.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

TYPE_RASTER_SCREEN

public static final int TYPE_RASTER_SCREEN

Device is a raster screen.

See Also:

Constant Field Values

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TYPE_PRINTER

public static final int TYPE_PRINTER

Device is a printer.

See Also:

Constant Field Values

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TYPE_IMAGE_BUFFER

public static final int TYPE_IMAGE_BUFFER

Device is an image buffer not visible to the user.

See Also:

Constant Field Values

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full_screen

private Window full_screen

The current full-screen window, or null if there is none.

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fullScreenOldBounds

private Rectangle fullScreenOldBounds

The bounds of the fullscreen window before it has been switched to full screen.

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mode

private DisplayMode mode

The current display mode, or null if unknown.

Constructor Detail

GraphicsDevice

protected GraphicsDevice()

The default constructor.

Method Detail

getType

public abstract int getType()

Returns the type of the device.

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getIDstring

public abstract java.lang.String getIDstring()

Returns an identification string for the device. This can be vendor-specific, and may be useful for debugging.

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getConfigurations

public abstract GraphicsConfiguration[] getConfigurations()

Return all configurations valid for this device.

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getDefaultConfiguration

public abstract GraphicsConfiguration getDefaultConfiguration()

Return the default configuration for this device.

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getBestConfiguration

public GraphicsConfiguration getBestConfiguration(GraphicsConfigTemplate template)

Return the best configuration, according to the criteria in the given template.

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isFullScreenSupported

public boolean isFullScreenSupported()

Returns true if the device supports full-screen exclusive mode. The default implementation returns true; subclass it if this is not the case.

Since:

1.4

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setFullScreenWindow

public void setFullScreenWindow(Window w)

Toggle the given window between full screen and normal mode. The previous full-screen window, if different, is restored; if the given window is null, no window will be full screen. If isFullScreenSupported() returns true, full screen mode is considered to be exclusive, which implies:

• Windows cannot overlap the full-screen window. All other application windows will always appear beneath the full-screen window in the Z-order.
• Input method windows are disabled. It is advisable to call Component.enableInputMethods(false) to make a component a non-client of the input method framework.

If isFullScreenSupported() returns false, full-screen exclusive mode is simulated by resizing the window to the size of the screen and positioning it at (0,0). This is also what this method does. If a device supports real fullscreen mode then it should override this method as well as #isFullScreenSupported and #getFullScreenWindow.

Since:

1.4

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getFullScreenWindow

public Window getFullScreenWindow()

Returns the current full-screen window of the device, or null if no window is full-screen.

Since:

1.4

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isDisplayChangeSupported

public boolean isDisplayChangeSupported()

Returns whether this device supports low-level display changes. This may depend on whether full-screen exclusive mode is available. XXX The default implementation returns false for now.

Since:

1.4

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setDisplayMode

public void setDisplayMode(DisplayMode mode)

Sets the display mode. This may be dependent on the availability of full-screen exclusive mode.

Since:

1.4

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getDisplayMode

public DisplayMode getDisplayMode()

Returns the current display mode of this device, or null if unknown.

Since:

1.4

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getDisplayModes

public DisplayMode[] getDisplayModes()

Return an array of all available display modes. This implementation returns a 0-length array, so subclasses must override this.

Since:

1.4

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getAvailableAcceleratedMemory

public int getAvailableAcceleratedMemory()

Return the number of bytes available in accelerated memory on this device. The device may support creation or caching on a first-come, first-served basis, depending on the operating system and driver. Memory may be a finite resource, and because of multi-threading, you are not guaranteed that the result of this method ensures your image will successfully be put in accelerated memory. A negative result means the memory is unlimited. The default implementation assumes no special memory is available, and returns 0.

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Home >> All >> java >> [ awt overview ]	PREV CLASS  NEXT CLASS
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