SubRegionShowable.java revision 2362
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*
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
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*
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package sun.awt;
/**
* Interface used by Swing to make copies from the Swing back buffer
* more optimal when using BufferStrategy; no need to copy the entire
* buffer when only a small sub-region has changed.
* @see javax.swing.BufferStrategyPaintManager
*
*/
public interface SubRegionShowable {
/**
* Shows the specific subregion.
*/
public void show(int x1, int y1, int x2, int y2);
/**
* Shows the specified region if the buffer is not lost and the dimensions
* of the back-buffer match those of the component.
*
* @return true if successful
*/
// NOTE: this is invoked by swing on the toolkit thread!
public boolean showIfNotLost(int x1, int y1, int x2, int y2);
}