Module java.desktop
Package java.awt

Class BufferCapabilities

java.lang.Object
java.awt.BufferCapabilities
All Implemented Interfaces:
Cloneable

public class BufferCapabilities extends Object implements Cloneable
Capabilities and properties of buffers.
Since:
1.4
See Also:
  • Constructor Details

    • BufferCapabilities

      public BufferCapabilities(ImageCapabilities frontCaps, ImageCapabilities backCaps, BufferCapabilities.FlipContents flipContents)
      Creates a new object for specifying buffering capabilities
      Parameters:
      frontCaps - the capabilities of the front buffer; cannot be null
      backCaps - the capabilities of the back and intermediate buffers; cannot be null
      flipContents - the contents of the back buffer after page-flipping, null if page flipping is not used (implies blitting)
      Throws:
      IllegalArgumentException - if frontCaps or backCaps are null
  • Method Details

    • getFrontBufferCapabilities

      public ImageCapabilities getFrontBufferCapabilities()
      Returns:
      the image capabilities of the front (displayed) buffer
    • getBackBufferCapabilities

      public ImageCapabilities getBackBufferCapabilities()
      Returns:
      the image capabilities of all back buffers (intermediate buffers are considered back buffers)
    • isPageFlipping

      public boolean isPageFlipping()
      Returns:
      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
    • getFlipContents

      public BufferCapabilities.FlipContents getFlipContents()
      Returns:
      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 Also:
    • isFullScreenRequired

      public boolean isFullScreenRequired()
      Returns:
      whether page flipping is only available in full-screen mode. If this is true, full-screen exclusive mode is required for page-flipping.
      See Also:
    • isMultiBufferAvailable

      public boolean isMultiBufferAvailable()
      Returns:
      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 Also:
    • clone

      public Object clone()
      Description copied from class: Object
      Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.

      Classes which wish to support cloning must specify that they implement the Cloneable interface, since the native implementation checks for this.

      Overrides:
      clone in class Object
      Returns:
      a copy of this BufferCapabilities object.