Package org.jcsp.awt

Class GraphicsCommand

java.lang.Object

org.jcsp.lang.TaggedProtocol

org.jcsp.awt.GraphicsCommand

Direct Known Subclasses:

GraphicsCommand.ClearRect, GraphicsCommand.ClipRect, GraphicsCommand.CopyArea, GraphicsCommand.Draw3DRect, GraphicsCommand.DrawArc, GraphicsCommand.DrawBytes, GraphicsCommand.DrawChars, GraphicsCommand.DrawImage, GraphicsCommand.DrawLine, GraphicsCommand.DrawOval, GraphicsCommand.DrawPolygon, GraphicsCommand.DrawPolyline, GraphicsCommand.DrawRect, GraphicsCommand.DrawRoundRect, GraphicsCommand.DrawString, GraphicsCommand.Fill3DRect, GraphicsCommand.FillArc, GraphicsCommand.FillOval, GraphicsCommand.FillPolygon, GraphicsCommand.FillRect, GraphicsCommand.FillRoundRect, GraphicsCommand.General, GraphicsCommand.SetClip, GraphicsCommand.SetColor, GraphicsCommand.SetFont, GraphicsCommand.SetXORMode, GraphicsCommand.Translate

public abstract class GraphicsCommand
extends TaggedProtocol

This is the tagged protocol interpreted by objects (such as DisplayList) that implement the Display interface.

Description

GraphicsCommand is the TaggedProtocol interpreted by objects (such as DisplayList) that implement the Display interface. It is a collection of static graphics command classes and a couple of immutable graphics command objects. The constructors for each command class set the parameters for the command. The immutable objects are commands that take no parameters.

A Display object provides a secure interface between an active user process and an active graphics component (such as ActiveCanvas). It enables all methods of java.awt.graphics to be executed on the active graphics component. User processes send an array of GraphicsCommands by invoking set, extend or change on the Display.

The meaning of each command is defined by the corresponding method in java.awt.graphics. For example, the GraphicsCommand.DrawImage constructors correspond to the java.awt.graphics.drawImage methods.

Author:

P.H. Welch

See Also:

Display, DisplayList, ActiveCanvas, TaggedProtocol

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	GraphicsCommand.ClearRect	This is the (immutable) command object for java.awt.Graphics.clearRect.
static class	GraphicsCommand.ClipRect	This is the (immutable) command object for java.awt.Graphics.clipRect.
static class	GraphicsCommand.CopyArea	This is the (immutable) command object for java.awt.Graphics.copyArea.
static class	GraphicsCommand.Draw3DRect	This is the (immutable) command object for java.awt.Graphics.draw3DRect.
static class	GraphicsCommand.DrawArc	This is the (immutable) command object for java.awt.Graphics.drawArc.
static class	GraphicsCommand.DrawBytes	This is the (immutable) command object for java.awt.Graphics.drawBytes.
static class	GraphicsCommand.DrawChars	This is the (immutable) command object for java.awt.Graphics.drawChars.
static class	GraphicsCommand.DrawImage	This is the (immutable) command object for java.awt.Graphics.drawImage.
static class	GraphicsCommand.DrawLine	This is the (immutable) command object for java.awt.Graphics.drawLine.
static class	GraphicsCommand.DrawOval	This is the (immutable) command object for java.awt.Graphics.drawOval.
static class	GraphicsCommand.DrawPolygon	This is the (immutable) command object for java.awt.Graphics.drawPolygon.
static class	GraphicsCommand.DrawPolyline	This is the (immutable) command object for java.awt.Graphics.drawPolyline.
static class	GraphicsCommand.DrawRect	This is the (immutable) command object for java.awt.Graphics.drawRect.
static class	GraphicsCommand.DrawRoundRect	This is the (immutable) command object for java.awt.Graphics.drawRoundRect.
static class	GraphicsCommand.DrawString	This is the (immutable) command object for java.awt.Graphics.drawString.
static class	GraphicsCommand.Fill3DRect	This is the (immutable) command object for java.awt.Graphics.translate.
static class	GraphicsCommand.FillArc	This is the (immutable) command object for java.awt.Graphics.fillArc.
static class	GraphicsCommand.FillOval	This is the (immutable) command object for java.awt.Graphics.fillOval.
static class	GraphicsCommand.FillPolygon	This is the (immutable) command object for java.awt.Graphics.fillPolygon.
static class	GraphicsCommand.FillRect	This is the (immutable) command object for java.awt.Graphics.fillRect.
static class	GraphicsCommand.FillRoundRect	This is the (immutable) command object for java.awt.Graphics.fillRoundRect.
static class	GraphicsCommand.General	This is the command object holding a GraphicsCommand.Graphic object implementing an arbitrary set of graphics operations.
static interface	GraphicsCommand.Graphic	This is the interface allowing any set of Graphics operations to be wrapped up in an object and sent down a Display channel to an Active graphics component.
static class	GraphicsCommand.SetClip	This is the (immutable) command object for java.awt.Graphics.setClip.
static class	GraphicsCommand.SetColor	This is the (immutable) command object for java.awt.Graphics.setColor.
static class	GraphicsCommand.SetFont	This is the (immutable) command object for java.awt.Graphics.setFont.
static class	GraphicsCommand.SetXORMode	This is the (immutable) command object for java.awt.Graphics.setXORMode.
static class	GraphicsCommand.Translate	This is the (immutable) command object for java.awt.Graphics.translate.

Field Summary

Fields

Modifier and Type	Field	Description
static GraphicsCommand	NULL	This is the null command whose interpretation is a no-op.
static GraphicsCommand	SET_PAINT_MODE	This is the (immutable) command object for java.awt.Graphics.setPaintMode.

Fields inherited from class org.jcsp.lang.TaggedProtocol

tag

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

NULL

public static final GraphicsCommand NULL

This is the null command whose interpretation is a no-op.

SET_PAINT_MODE

public static final GraphicsCommand SET_PAINT_MODE

This is the (immutable) command object for java.awt.Graphics.setPaintMode.