1022 * which is true when all palette entries in the color
1023 * model are gray and opaque.
1024 */
1025 protected static native boolean isOpaqueGray(IndexColorModel icm);
1026
1027 /**
1028 * For our purposes null and NullSurfaceData are the same as
1029 * they represent a disposed surface.
1030 */
1031 public static boolean isNull(SurfaceData sd) {
1032 if (sd == null || sd == NullSurfaceData.theInstance) {
1033 return true;
1034 }
1035 return false;
1036 }
1037
1038 /**
1039 * Performs a copyarea within this surface. Returns
1040 * false if there is no algorithm to perform the copyarea
1041 * given the current settings of the SunGraphics2D.
1042 */
1043 public boolean copyArea(SunGraphics2D sg2d,
1044 int x, int y, int w, int h, int dx, int dy)
1045 {
1046 return false;
1047 }
1048
1049 /**
1050 * Synchronously releases resources associated with this surface.
1051 */
1052 public void flush() {}
1053
1054 /**
1055 * Returns destination associated with this SurfaceData. This could be
1056 * either an Image or a Component; subclasses of SurfaceData are
1057 * responsible for returning the appropriate object.
1058 */
1059 public abstract Object getDestination();
1060
1061 /**
|
1022 * which is true when all palette entries in the color
1023 * model are gray and opaque.
1024 */
1025 protected static native boolean isOpaqueGray(IndexColorModel icm);
1026
1027 /**
1028 * For our purposes null and NullSurfaceData are the same as
1029 * they represent a disposed surface.
1030 */
1031 public static boolean isNull(SurfaceData sd) {
1032 if (sd == null || sd == NullSurfaceData.theInstance) {
1033 return true;
1034 }
1035 return false;
1036 }
1037
1038 /**
1039 * Performs a copyarea within this surface. Returns
1040 * false if there is no algorithm to perform the copyarea
1041 * given the current settings of the SunGraphics2D.
1042 *
1043 * @param x the x coordinate of the area in device space
1044 * @param y the y coordinate of the area in device space
1045 * @param w the width of the area in device space
1046 * @param h the height of the area in device space
1047 */
1048 public boolean copyArea(SunGraphics2D sg2d,
1049 int x, int y, int w, int h, int dx, int dy)
1050 {
1051 return false;
1052 }
1053
1054 /**
1055 * Synchronously releases resources associated with this surface.
1056 */
1057 public void flush() {}
1058
1059 /**
1060 * Returns destination associated with this SurfaceData. This could be
1061 * either an Image or a Component; subclasses of SurfaceData are
1062 * responsible for returning the appropriate object.
1063 */
1064 public abstract Object getDestination();
1065
1066 /**
|