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package sun.java2d.xr;

import java.awt.GraphicsConfiguration;
import java.awt.ImageCapabilities;
import java.awt.image.ColorModel;
import sun.awt.image.SunVolatileImage;
import sun.awt.image.VolatileSurfaceManager;
import sun.java2d.SurfaceData;

XRender platform implementation of the VolatileSurfaceManager class.
/** * XRender platform implementation of the VolatileSurfaceManager class. */
public class XRVolatileSurfaceManager extends VolatileSurfaceManager { public XRVolatileSurfaceManager(SunVolatileImage vImg, Object context) { super(vImg, context); } protected boolean isAccelerationEnabled() { return true; }
Create a pixmap-based SurfaceData object
/** * Create a pixmap-based SurfaceData object */
protected SurfaceData initAcceleratedSurface() { SurfaceData sData; try { XRGraphicsConfig gc = (XRGraphicsConfig) vImg.getGraphicsConfig(); ColorModel cm = gc.getColorModel(); long drawable = 0; if (context instanceof Long) { drawable = ((Long)context).longValue(); } sData = XRSurfaceData.createData(gc, vImg.getWidth(), vImg.getHeight(), cm, vImg, drawable, vImg.getTransparency(), false); } catch (NullPointerException ex) { sData = null; } catch (OutOfMemoryError er) { sData = null; } return sData; }
XRender should allow copies between different formats and depths. TODO: verify that this assumption is correct.
/** * XRender should allow copies between different formats and depths. * TODO: verify that this assumption is correct. */
protected boolean isConfigValid(GraphicsConfiguration gc) { return true; }
Need to override the default behavior because Pixmaps-based images are accelerated but not volatile.
/** * Need to override the default behavior because Pixmaps-based * images are accelerated but not volatile. */
@Override public ImageCapabilities getCapabilities(GraphicsConfiguration gc) { if (isConfigValid(gc) && isAccelerationEnabled()) { return new ImageCapabilities(true); } return new ImageCapabilities(false); } }