smithers.extras
Class BltComposite

java.lang.Object
  smithers.extras.BltComposite

All Implemented Interfaces:

java.awt.Composite

public class BltComposite
extends java.lang.Object
implements java.awt.Composite

Implementation of the Composite interface which provides the 16 standard blting operations.

Field Summary

static int	OP_AND Operation constant for src & dst.
static int	OP_AND_NOT Operation constant for src & ~dst.
static int	OP_CLEAR Operation constant for 0 (clear).
static int	OP_COPY Operation constant for src.
static int	OP_EQUIV Operation constant for ~(src ^ dst).
static int	OP_NAND Operation constant for ~(src & dst).
static int	OP_NOOP Operation constant for dst.
static int	OP_NOR Operation constant for ~(src | dst).
static int	OP_NOT Operation constant for ~dst.
static int	OP_NOT_AND Operation constant for ~src & dst.
static int	OP_NOT_COPY Operation constant for ~src.
static int	OP_NOT_OR Operation constant for ~src | dst.
static int	OP_OR Operation constant for src | dst.
static int	OP_OR_NOT Operation constant for src | ~dst.
static int	OP_SET Operation constant for 1 (set).
static int	OP_XOR Operation constant for src ^ dst.

Constructor Summary

BltComposite(int op, int bandMask)
Creates a new BltComposite with a given operation.

Method Summary

java.awt.CompositeContext	createContext(java.awt.image.ColorModel srcColorModel, java.awt.image.ColorModel dstColorModel, java.awt.RenderingHints hints) Creates a context for compositing.
static void	main(java.lang.String[] args) Tester.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

OP_CLEAR

public static int OP_CLEAR

Operation constant for 0 (clear).

OP_AND

public static int OP_AND

Operation constant for src & dst.

OP_AND_NOT

public static int OP_AND_NOT

Operation constant for src & ~dst.

OP_COPY

public static int OP_COPY

Operation constant for src.

OP_NOT_AND

public static int OP_NOT_AND

Operation constant for ~src & dst.

OP_NOOP

public static int OP_NOOP

Operation constant for dst.

OP_XOR

public static int OP_XOR

Operation constant for src ^ dst.

OP_OR

public static int OP_OR

Operation constant for src | dst.

OP_NOR

public static int OP_NOR

Operation constant for ~(src | dst).

OP_EQUIV

public static int OP_EQUIV

Operation constant for ~(src ^ dst).

OP_NOT

public static int OP_NOT

Operation constant for ~dst.

OP_OR_NOT

public static int OP_OR_NOT

Operation constant for src | ~dst.

OP_NOT_COPY

public static int OP_NOT_COPY

Operation constant for ~src.

OP_NOT_OR

public static int OP_NOT_OR

Operation constant for ~src | dst.

OP_NAND

public static int OP_NAND

Operation constant for ~(src & dst).

OP_SET

public static int OP_SET

Operation constant for 1 (set).

Constructor Detail

BltComposite

public BltComposite(int op,
                    int bandMask)

Creates a new BltComposite with a given operation.

Parameters:

op - the operation to perform

bandMask - the band mask to apply (unmasked bands will remain unchanged in the destination image)

Method Detail

createContext

public java.awt.CompositeContext createContext(java.awt.image.ColorModel srcColorModel,
                                               java.awt.image.ColorModel dstColorModel,
                                               java.awt.RenderingHints hints)

Creates a context for compositing.

Specified by:

createContext in interface java.awt.Composite

Parameters:

srcColorModel - ignored

dstColorModel - ignored

hints - ignored

Returns:

a new context

main

public static void main(java.lang.String[] args)
                 throws java.io.IOException

Tester. Loads one image file from args[0] and another from args[1] and copies the former over the latter using each operation of this class. Saves the results as "0.png" to "15.png".

Parameters:

args - the arguments

Throws:

java.io.IOException