Package org.jcsp.awt
Class GraphicsProtocol
java.lang.Object
org.jcsp.lang.TaggedProtocol
org.jcsp.awt.GraphicsProtocol
- Direct Known Subclasses:
GraphicsProtocol.General
,GraphicsProtocol.MakeMISImage
,GraphicsProtocol.SetBackground
,GraphicsProtocol.SetPaintable
This is the tagged protocol for use over the toGraphics
configuration channel of an active graphics component.
Description
GraphicsProtocol is the tagged protocol for use over the toGraphics configuration channel of an active graphics component (for example, seeActiveCanvas.setGraphicsChannels
).
It is a collection of static immutable enquiry/configuration objects and static configuration classes. An enquiry sent down the toGraphics channel generates an appropriate reply on the fromGraphics channel. A configuration class may be used to construct an immutable configuration object that may be sent down the toGraphics channel to configure some property of the graphics component. A configuration message is always acknowledged with a Boolean.TRUE returned on the fromGraphics channel (once the configuration has happened).
- Author:
- P.H. Welch
- See Also:
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Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionstatic interface
This is the interface for general configuration of the graphics component.static final class
This is a general configuration class for the graphics component.static final class
This is a configuration class to associate a java.awt.image.MemoryImageSource with the graphics component.static final class
This is a configuration class for setting the background java.awt.Color of the active graphics component.static final class
This is a configuration class to register a org.jcsp.awt.Paintable object with the graphics component. -
Field Summary
FieldsModifier and TypeFieldDescriptionstatic final GraphicsProtocol
This is an enquiry object to find the background colour of the active graphics component.static final GraphicsProtocol
This is an enquiry object to obtain the active graphics component.static final GraphicsProtocol
This is an enquiry object to find the size of the active graphics component.static final GraphicsProtocol
This is a configuration object to request input focus on the graphics component for keyboard and mouse evnts.Fields inherited from class org.jcsp.lang.TaggedProtocol
tag
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Method Summary
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Field Details
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GET_DIMENSION
This is an enquiry object to find the size of the active graphics component. The java.awt.Dimension will be returned down the fromGraphics channel. -
GET_COMPONENT
This is an enquiry object to obtain the active graphics component. The java.awt.Component will be returned down the fromGraphics channel. -
GET_BACKGROUND
This is an enquiry object to find the background colour of the active graphics component. The background java.awt.Color will be returned down the fromGraphics channel. -
REQUEST_FOCUS
This is a configuration object to request input focus on the graphics component for keyboard and mouse evnts. A Boolean.TRUE will be returned down the fromGraphics channel.
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