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PadComp, PadView, PadGraphic, PSPad

pad connector subject, view, structured graphic, and PostScript external representation

#include <Unidraw/Components/pad.h>

PadComp is a Connector subclass that supports connectivity with two degrees of freedom. It uses a PadGraphic to store its graphical attributes. PadView is a GraphicView for displaying the pad. PSPad is a PostScriptView that externalizes the subject's information in PostScript form.

The constructor takes an optional PadGraphic that defines the pad's graphical attributes.
PadComp (un)interprets a subset of commands that connectors can generally interpret, namely MoveCmd, BrushCmd, AlignCmd, MobilityCmd, DeleteCmd, and CutCmd.
PadComp redefines these functions to return and assign its _mobility protected member. The pad has fixed mobility initially.
Return the Pad graphic that defines the line's attributes. GetPad is simply a more specific form of the GetGraphic operation.

Create an PadView, optionally supplying the subject.
PadView interprets AlignToGridCmd to align its lower left to the grid.
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PadViews respond only to manipulation by GraphicCompTools, MoveTools, and ConnectTools. PadView inherits its MoveTool response from ConnectorView. GraphicCompTool will let the user sweep out a rectangle that reflects the pad's size. Creation will be influenced by gravity, if any. PadView creates a ConnectManip in response to the ConnectTool, which will exhibit a gravational attraction to potential target connectors. PadView will produce a ConnectCmd to connect the pad to its target. A pad connected in this way will receive floating mobility.
Return the subject.

Return the PadGraphic that defines the pad's attributes. GetPad is simply a more specific form of the GetGraphic operation.
A helper function that creates a PadComp subject with the given pad graphic. This function produces the proper subject when the GraphicCompTool's manipulator is interpreted. Subclasses can redefine this operation to return a PadComp subclass, thus eliminating the need to reimplement InterpretManipulator.
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Helper functions used by CreateManipulator and InterpretManipulator to create and interpret the manipulators associated with GraphicCompTool and ConnectTool.

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Create a PadGraphic, optionally specifying lower-left and upper-right corners and a graphic from which to obtain its default graphics attributes.
Return the PadGraphic's original coordinates as specified in the constructor.

Construct a PostScript external representation of the given subject, if any.

BrushCmd(3U), ConnectTool(3U), Connector(3U), ConnectorView3U), Event(3I), Graphic(3U), GraphicCompTool(3U), Grid(3U), MoveTool(3U), PatternCmd(3U), PostScriptView(3U), Transformer(3I), Viewer(3U), align(3U), edit(3U), manips(3U), transforms(3U)