File	Doc	Category	Size	Date	Package
BufferCapabilities.java	API Doc	Java SE 5 API	6489	Fri Aug 26 14:56:44 BST 2005	java.awt

BufferCapabilities

• java.lang.Object

Fields Summary
private ImageCapabilities	frontCaps
private ImageCapabilities	backCaps
private FlipContents	flipContents

Constructors Summary

public BufferCapabilities(ImageCapabilities frontCaps, ImageCapabilities backCaps, FlipContents flipContents) Creates a new object for specifying buffering capabilities param frontCaps the capabilities of the front buffer; cannot be null param backCaps the capabilities of the back and intermediate buffers; cannot be null param flipContents the contents of the back buffer after page-flipping, null if page flipping is not used (implies blitting) exception IllegalArgumentException if frontCaps or backCaps are null if (frontCaps == null || backCaps == null) { throw new IllegalArgumentException( "Image capabilities specified cannot be null"); } this.frontCaps = frontCaps; this.backCaps = backCaps; this.flipContents = flipContents;

Methods Summary
public java.lang.Object	clone() return a copy of this BufferCapabilities object. try { return super.clone(); } catch (CloneNotSupportedException e) { // Since we implement Cloneable, this should never happen throw new InternalError(); }
public java.awt.ImageCapabilities	getBackBufferCapabilities() return the image capabilities of all back buffers (intermediate buffers are considered back buffers) return backCaps;
public java.awt.BufferCapabilities$FlipContents	getFlipContents() return the resulting contents of the back buffer after page-flipping. This value is null when the isPageFlipping returns false, implying blitting. It can be one of FlipContents.UNDEFINED (the assumed default), FlipContents.BACKGROUND, FlipContents.PRIOR, or FlipContents.COPIED. see #isPageFlipping see FlipContents#UNDEFINED see FlipContents#BACKGROUND see FlipContents#PRIOR see FlipContents#COPIED return flipContents;
public java.awt.ImageCapabilities	getFrontBufferCapabilities() return the image capabilities of the front (displayed) buffer return frontCaps;
public boolean	isFullScreenRequired() return whether page flipping is only available in full-screen mode. If this is true, full-screen exclusive mode is required for page-flipping. see #isPageFlipping see GraphicsDevice#setFullScreenWindow return false;
public boolean	isMultiBufferAvailable() return whether or not page flipping can be performed using more than two buffers (one or more intermediate buffers as well as the front and back buffer). see #isPageFlipping return false;
public boolean	isPageFlipping() return whether or not the buffer strategy uses page flipping; a set of buffers that uses page flipping can swap the contents internally between the front buffer and one or more back buffers by switching the video pointer (or by copying memory internally). A non-flipping set of buffers uses blitting to copy the contents from one buffer to another; when this is the case, getFlipContents returns null return (getFlipContents() != null);