/*
* Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
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*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* 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
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package sun.java2d.x11;
import java.awt.Color;
import java.awt.AlphaComposite;
import java.awt.GraphicsConfiguration;
import java.awt.Transparency;
import java.awt.image.ColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.DirectColorModel;
import sun.awt.X11GraphicsConfig;
import sun.java2d.SurfaceData;
import sun.java2d.SurfaceDataProxy;
import sun.java2d.SunGraphics2D;
import sun.java2d.loops.SurfaceType;
import sun.java2d.loops.CompositeType;
/**
* The proxy class contains the logic for when to replace a
* SurfaceData with a cached X11 Pixmap and the code to create
* the accelerated surfaces.
*/
public abstract class X11SurfaceDataProxy extends SurfaceDataProxy
implements Transparency
{
public static SurfaceDataProxy createProxy(SurfaceData srcData,
X11GraphicsConfig dstConfig)
{
if (srcData instanceof X11SurfaceData) {
// srcData must be a VolatileImage which either matches
// our visual or not - either way we do not cache it...
return UNCACHED;
}
ColorModel cm = srcData.getColorModel();
int transparency = cm.getTransparency();
if (transparency == Transparency.OPAQUE) {
return new Opaque(dstConfig);
} else if (transparency == Transparency.BITMASK) {
// 4673490: updateBitmask() only handles ICMs with 8-bit indices
if ((cm instanceof IndexColorModel) && cm.getPixelSize() == 8) {
return new Bitmask(dstConfig);
}
// The only other ColorModel handled by updateBitmask() is
// a DCM where the alpha bit, and only the alpha bit, is in
// the top 8 bits
if (cm instanceof DirectColorModel) {
DirectColorModel dcm = (DirectColorModel) cm;
int colormask = (dcm.getRedMask() |
dcm.getGreenMask() |
dcm.getBlueMask());
int alphamask = dcm.getAlphaMask();
if ((colormask & 0xff000000) == 0 &&
(alphamask & 0xff000000) != 0)
{
return new Bitmask(dstConfig);
}
}
}
// For whatever reason, this image is not a good candidate for
// caching in a pixmap so we return the non-caching (non-)proxy.
return UNCACHED;
}
X11GraphicsConfig x11gc;
public X11SurfaceDataProxy(X11GraphicsConfig x11gc) {
this.x11gc = x11gc;
}
@Override
public SurfaceData validateSurfaceData(SurfaceData srcData,
SurfaceData cachedData,
int w, int h)
{
if (cachedData == null) {
// Bitmask will be created lazily during the blit phase
cachedData = X11SurfaceData.createData(x11gc, w, h,
x11gc.getColorModel(),
null, 0, getTransparency());
}
return cachedData;
}
/**
* Proxy for opaque source images.
* This proxy can accelerate unscaled Src copies.
*/
public static class Opaque extends X11SurfaceDataProxy {
public Opaque(X11GraphicsConfig x11gc) {
super(x11gc);
}
public int getTransparency() {
return Transparency.OPAQUE;
}
@Override
public boolean isSupportedOperation(SurfaceData srcData,
int txtype,
CompositeType comp,
Color bgColor)
{
return (txtype < SunGraphics2D.TRANSFORM_TRANSLATESCALE &&
(CompositeType.SrcOverNoEa.equals(comp) ||
CompositeType.SrcNoEa.equals(comp)));
}
}
/**
* Proxy for bitmask transparent source images.
* This proxy can accelerate unscaled Src copies or
* unscaled SrcOver copies that use an opaque bgColor.
*/
public static class Bitmask extends X11SurfaceDataProxy {
public Bitmask(X11GraphicsConfig x11gc) {
super(x11gc);
}
public int getTransparency() {
return Transparency.BITMASK;
}
@Override
public boolean isSupportedOperation(SurfaceData srcData,
int txtype,
CompositeType comp,
Color bgColor)
{
// These could probably be combined into a single
// nested if, but the logic is easier to follow this way.
// we don't have X11 scale loops, so always use
// software surface in case of scaling
if (txtype >= SunGraphics2D.TRANSFORM_TRANSLATESCALE) {
return false;
}
if (bgColor != null &&
bgColor.getTransparency() != Transparency.OPAQUE)
{
return false;
}
// for transparent images SrcNoEa+bgColor has the
// same effect as SrcOverNoEa+bgColor, so we allow
// copying from pixmap SD using accelerated blitbg loops:
// SrcOver will be changed to SrcNoEa in DrawImage.blitSD
if (CompositeType.SrcOverNoEa.equals(comp) ||
(CompositeType.SrcNoEa.equals(comp) &&
bgColor != null))
{
return true;
}
return false;
}
}
}