java.lang.Object | ||
↳ | java.awt.image.BufferStrategy | |
↳ | java.awt.Component.BltBufferStrategy |
Inner class for blitting offscreen surfaces to a component.
Fields | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
backBuffers | The back buffers | ||||||||||
caps | The buffering capabilities | ||||||||||
height | |||||||||||
validatedContents | Whether or not the drawing buffer has been recently restored from a lost state. | ||||||||||
width | Size of the back buffers |
Protected Constructors | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Creates a new blt buffer strategy around a component
|
Public Methods | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Returns whether the drawing buffer was lost since the last call to
getDrawGraphics . | |||||||||||
Returns whether the drawing buffer was recently restored from a lost
state and reinitialized to the default background color (white).
| |||||||||||
Releases system resources currently consumed by this
BufferStrategy and
removes it from the associated Component. | |||||||||||
Returns the
BufferCapabilities for this
BufferStrategy . | |||||||||||
Creates a graphics context for the drawing buffer.
| |||||||||||
Makes the next available buffer visible.
|
Protected Methods | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Creates the back buffers
| |||||||||||
Restore the drawing buffer if it has been lost
|
[Expand]
Inherited Methods | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
From class
java.awt.image.BufferStrategy
| |||||||||||
From class
java.lang.Object
|
Whether or not the drawing buffer has been recently restored from a lost state.
Size of the back buffers
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 |
Returns whether the drawing buffer was lost since the last call to
getDrawGraphics
. Since the buffers in a buffer strategy
are usually type VolatileImage
, they may become lost.
For a discussion on lost buffers, see VolatileImage
.
getDrawGraphics
Returns whether the drawing buffer was recently restored from a lost
state and reinitialized to the default background color (white).
Since the buffers in a buffer strategy are usually type
VolatileImage
, they may become lost. If a surface has
been recently restored from a lost state since the last call to
getDrawGraphics
, it may require repainting.
For a discussion on lost buffers, see VolatileImage
.
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.
Returns the BufferCapabilities
for this
BufferStrategy
.
Creates a graphics context for the drawing buffer. This method may not be synchronized for performance reasons; use of this method by multiple threads should be handled at the application level. Disposal of the graphics object obtained must be handled by the application.
Makes the next available buffer visible.
Creates the back buffers
Restore the drawing buffer if it has been lost