474      * @return true if there is any chance that an XCopyArea from the
 475      *              given source coordinates could produce any X11
 476      *              Exposure events.
 477      */
 478     public abstract boolean canSourceSendExposures(int x, int y, int w, int h);
 479 
 480     public boolean copyArea(SunGraphics2D sg2d,
 481                             int x, int y, int w, int h, int dx, int dy)
 482     {
 483         if (x11pipe == null) {
 484             if (!isDrawableValid()) {
 485                 return true;
 486             }
 487             makePipes();
 488         }
 489         CompositeType comptype = sg2d.imageComp;
 490         if (sg2d.transformState < SunGraphics2D.TRANSFORM_TRANSLATESCALE &&
 491             (CompositeType.SrcOverNoEa.equals(comptype) ||
 492              CompositeType.SrcNoEa.equals(comptype)))
 493         {
 494             x += sg2d.transX;
 495             y += sg2d.transY;
 496             SunToolkit.awtLock();
 497             try {
 498                 boolean needExposures = canSourceSendExposures(x, y, w, h);
 499                 long xgc = getBlitGC(sg2d.getCompClip(), needExposures);
 500                 x11pipe.devCopyArea(getNativeOps(), xgc,
 501                                     x, y,
 502                                     x + dx, y + dy,
 503                                     w, h);
 504             } finally {
 505                 SunToolkit.awtUnlock();
 506             }
 507             return true;
 508         }
 509         return false;
 510     }
 511 
 512     public static SurfaceType getSurfaceType(X11GraphicsConfig gc,
 513                                              int transparency)
 514     {
 515         return getSurfaceType(gc, transparency, false);

 474      * @return true if there is any chance that an XCopyArea from the
 475      *              given source coordinates could produce any X11
 476      *              Exposure events.
 477      */
 478     public abstract boolean canSourceSendExposures(int x, int y, int w, int h);
 479 
 480     public boolean copyArea(SunGraphics2D sg2d,
 481                             int x, int y, int w, int h, int dx, int dy)
 482     {
 483         if (x11pipe == null) {
 484             if (!isDrawableValid()) {
 485                 return true;
 486             }
 487             makePipes();
 488         }
 489         CompositeType comptype = sg2d.imageComp;
 490         if (sg2d.transformState < SunGraphics2D.TRANSFORM_TRANSLATESCALE &&
 491             (CompositeType.SrcOverNoEa.equals(comptype) ||
 492              CompositeType.SrcNoEa.equals(comptype)))
 493         {


 494             SunToolkit.awtLock();
 495             try {
 496                 boolean needExposures = canSourceSendExposures(x, y, w, h);
 497                 long xgc = getBlitGC(sg2d.getCompClip(), needExposures);
 498                 x11pipe.devCopyArea(getNativeOps(), xgc,
 499                                     x, y,
 500                                     x + dx, y + dy,
 501                                     w, h);
 502             } finally {
 503                 SunToolkit.awtUnlock();
 504             }
 505             return true;
 506         }
 507         return false;
 508     }
 509 
 510     public static SurfaceType getSurfaceType(X11GraphicsConfig gc,
 511                                              int transparency)
 512     {
 513         return getSurfaceType(gc, transparency, false);