java.awt.Component.BltBufferStrategy

protected class java.awt

Component.BltBufferStrategy

Java SE 6

Extends: BufferStrategy

Contained within: Component

Details

Inner class for blitting offscreen surfaces to a component.

since

1.4

Fields

protected BufferCapabilities

caps
The buffering capabilities

protected VolatileImage[]

backBuffers
The back buffers

protected boolean

validatedContents
Whether or not the drawing buffer has been recently restored from a lost state.

protected int

width
Size of the back buffers

protected int

height

Constructors

protected

Component.BltBufferStrategy(int numBuffers, BufferCapabilities caps) Details

Creates a new blt buffer strategy around a component

numBuffers	number of buffers to create, including the front buffer
caps	the capabilities of the buffers

Methods

public boolean

contentsLost() Details

return whether the drawing buffer was lost since the last call to getDrawGraphics

public boolean

contentsRestored() Details

return

whether the drawing buffer was recently restored from a lost state and reinitialized to the default background color (white)

protected void

createBackBuffers(int numBuffers)
Creates the back buffers

public void

dispose() Details

Releases system resources currently consumed by this BufferStrategy and removes it from the associated Component. After invoking this method, getBufferStrategy will return null. Trying to use a BufferStrategy after it has been disposed will result in undefined behavior.

since

1.6

protected void

revalidate()
Restore the drawing buffer if it has been lost

public void

show()
Makes the next available buffer visible.

Properties

public BufferCapabilities

getCapabilities() Details

return

the buffering capabilities of this strategy

public Graphics

getDrawGraphics() Details

return

the draw graphics

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Java SE 6