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<html><head><TITLE>Description of OverlayComp</TITLE><BASE TARGET="_parent" ></head>
<body BGCOLOR=#FFFFFF>
<FONT FACE=Helvetica>
<DL><DT>
<FONT SIZE=4>
class
</FONT>
<FONT SIZE=5><B>OverlayComp</B></FONT>
<FONT SIZE=4> : public <A HREF="GraphicComp.html" >GraphicComp</A>, public <A HREF="Observer.html" >Observer</A>, public <A HREF="Observable.html" >Observable</A> </FONT>
<A HREF="index.html">(Return to index)</A>
<br><br>
<DD><FONT FACE=Times SIZE=4>
derived <A HREF="GraphicComp.html" >GraphicComp</A><br><br>
<B>Type:</B><br>
<UL>
Instantiable
</UL>
<br>
<B>Base Classes:</B><br>
<UL><FONT FACE=Helvetica SIZE=3>
public <A HREF="GraphicComp.html" >GraphicComp</A>, public <A HREF="Observer.html" >Observer</A>, public <A HREF="Observable.html" >Observable</A>
</FONT></UL>
<br>
<A HREF=derivedclasses.html#OverlayComp><B>Derived Classes</B></A>
<p>
<B>Include file:</B><br>
<UL><FONT FACE=Helvetica SIZE=3>
OverlayUnidraw/ovcomps.h
</FONT></UL>
<br>
<B>Description:</B><P> derived <A HREF="GraphicComp.html" >GraphicComp</A> with extensions for property lists of arbitrary
<A HREF="AttributeValue.html" >AttributeValue</A> objects, event propogation inherited from <A HREF="Observer.html" >Observer</A> and
<A HREF="Observable.html" >Observable</A>, and new persistence mechanisms (serialization) derived from
<A HREF="ExternView.html" >ExternView</A> (<A HREF="OverlayScript.html" >OverlayScript</A>).
<br><br>
</DL></FONT>
<FONT FACE=Times SIZE=4><B>Public:</B></FONT><br><br><UL>
<DT><FONT FACE=Helvetica>virtual void
<A NAME="AdjustBaseDir(constchar*oldpath&&COMMconstchar*newpath)">
<B>AdjustBaseDir</B> (const char* oldpath, const char* newpath) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
adjust base directory used for generating pathnames for this component,
done when a document is saved to a new location.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual void
<A NAME="Configure(Editor*)">
<B>Configure</B> (<A HREF="Editor.html" >Editor</A>*) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
to be filled in by derived class. Useful for initializing a component
after the <A HREF="Editor.html" >Editor</A> has been constructed.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual <A HREF="AttributeValue.html" >AttributeValue</A>*
<A NAME="FindValue(constchar*name&&COMMbooleanlast=false&&COMMbooleanbreadth=false&&COMMbooleandown=true&&COMMbooleanup=false)">
<B>FindValue</B> (const char* name, boolean last = false, boolean breadth = false, boolean down = true, boolean up = false) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
search component tree for specified attribute value by 'name'. Only
default argument mode implemented so far -- return first occurence found
with a downward depth-first search.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual <A HREF="AttributeValue.html" >AttributeValue</A>*
<A NAME="FindValue(intsymid&&COMMbooleanlast=false&&COMMbooleanbreadth=false&&COMMbooleandown=true&&COMMbooleanup=false)">
<B>FindValue</B> (int symid, boolean last = false, boolean breadth = false, boolean down = true, boolean up = false) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
search component tree for specified attribute value by 'symid'. Only
default argument mode implemented so far -- return first occurence found
with a downward depth-first search.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica><A HREF="OverlayView.html" >OverlayView</A>*
<A NAME="FindView(Viewer*)">
<B>FindView</B> (<A HREF="Viewer.html" >Viewer</A>*) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
return the view for this compoent (for this subject) in a specific viewer.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>const char*
<A NAME="GetAnnotation()">
<B>GetAnnotation</B> () </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
return pointer to annotation string for this component.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica><A HREF="AttributeList.html" >AttributeList</A>*
<A NAME="GetAttributeList()">
<B>GetAttributeList</B> () </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
return pointer to associated <A HREF="AttributeList.html" >AttributeList</A> (property list made up of
arbitrary <A HREF="AttributeValue.html" >AttributeValue</A> objects), creating if necessary.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual const char*
<A NAME="GetBaseDir()">
<B>GetBaseDir</B> () </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
set base directory used for generating pathnames for this component
and all of its children.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual boolean
<A NAME="GetByPathnameFlag()">
<B>GetByPathnameFlag</B> () </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
return by-pathname flag
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual ClassId
<A NAME="GetClassId()">
<B>GetClassId</B> () </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
original <A HREF="Unidraw.html" >Unidraw</A> class id system, based on #define's in *classes.h file.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual <A HREF="Graphic.html" >Graphic</A>*
<A NAME="GetIndexedGS(int)">
<B>GetIndexedGS</B> (int) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
return graphic state (gs) from table, a use of <A HREF="IndexedGsMixin.html" >IndexedGsMixin</A>.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual <A HREF="OverlaysComp.html" >OverlaysComp</A>*
<A NAME="GetIndexedPic(int)">
<B>GetIndexedPic</B> (int) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
return compound-graphic (pic) from table, a use of <A HREF="IndexedPicMixin.html" >IndexedPicMixin</A>.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual <A HREF="MultiLineObj.html" >MultiLineObj</A>*
<A NAME="GetIndexedPts(int)">
<B>GetIndexedPts</B> (int) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
return point-list (pts) from table, a use of <A HREF="IndexedPtsMixin.html" >IndexedPtsMixin</A>.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual <A HREF="Component.html" >Component</A>*
<A NAME="GetParent()">
<B>GetParent</B> () </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
get pointer to parent component.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual const char*
<A NAME="GetPathName()">
<B>GetPathName</B> () </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
get pathname associated with this component.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>static boolean
<A NAME="GraphicEquals(Graphic*a&&COMMGraphic*b)">
<B>GraphicEquals</B> (<A HREF="Graphic.html" >Graphic</A>* a, <A HREF="Graphic.html" >Graphic</A>* b) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
compare two graphics, 'a' and 'b', for equality.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual void
<A NAME="Interpret(Command*)">
<B>Interpret</B> (<A HREF="Command.html" >Command</A>*) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
pass command to component for interpretation.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual boolean
<A NAME="IsA(ClassId)">
<B>IsA</B> (ClassId) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
original <A HREF="Unidraw.html" >Unidraw</A> class id system, based on #define's in *classes.h file.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual void
<A NAME="Notify()">
<B>Notify</B> () </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
method specialized from <A HREF="Component.html" >Component</A> that incorporates the <A HREF="Observer.html" >Observer</A>/<A HREF="Observable.html" >Observable</A>
notification with the original <A HREF="Unidraw.html" >Unidraw</A> notification.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>
<A NAME="OverlayComp(Graphic*g=nil&&COMMOverlayComp*parent=nil)">
<B>OverlayComp</B> (<A HREF="Graphic.html" >Graphic</A>* g = nil, <A HREF="OverlayComp.html" >OverlayComp</A>* parent = nil) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
optional graphic and parent component used to initialize component.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>
<A NAME="OverlayComp(istream&in)">
<B>OverlayComp</B> (istream& in) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
component initialized by reading from 'in' (de-serialization).
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>void
<A NAME="SetAnnotation(constchar*)">
<B>SetAnnotation</B> (const char*) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
set the annotation string for this component.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>void
<A NAME="SetAttributeList(AttributeList*)">
<B>SetAttributeList</B> (<A HREF="AttributeList.html" >AttributeList</A>*) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
set new property list for component, de-referencing the old one, and
increment the reference-count of the new one.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual void
<A NAME="SetByPathnameFlag(boolean)">
<B>SetByPathnameFlag</B> (boolean) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
set flag that determines whether component will be serialized (converted to
external persistent storage) by just the pathname or by the internal contents.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual void
<A NAME="SetParent(Component*child&&COMMComponent*parent)">
<B>SetParent</B> (<A HREF="Component.html" >Component</A>* child, <A HREF="Component.html" >Component</A>* parent) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
set pointer to 'parent' component on 'child' component.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual void
<A NAME="SetPathName(constchar*)">
<B>SetPathName</B> (const char*) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
set pathname associated with this component.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica><A HREF="OverlayComp.html" >OverlayComp</A>*
<A NAME="TopComp()">
<B>TopComp</B> () </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
returns pointer to top-level component in the component tree.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual void
<A NAME="Uninterpret(Command*)">
<B>Uninterpret</B> (<A HREF="Command.html" >Command</A>*) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
pass command to component for reverse interpretation.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica><A HREF="AttributeList.html" >AttributeList</A>*
<A NAME="attrlist()">
<B>attrlist</B> () </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
return pointer to property list, without allocating a new one if it is nil.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual void
<A NAME="notify()">
<B>notify</B> () </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
notify method for an <A HREF="Observer.html" >Observer</A>/<A HREF="Observable.html" >Observable</A> design pattern.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual boolean
<A NAME="operator!=(OverlayComp&)">
<B>operator !=</B> (<A HREF="OverlayComp.html" >OverlayComp</A>&) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
compare another component, including its graphic, for non-equality to this one.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual boolean
<A NAME="operator==(OverlayComp&)">
<B>operator ==</B> (<A HREF="OverlayComp.html" >OverlayComp</A>&) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
compare another component, including its graphic, for equality to this one.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual void
<A NAME="update(Observable*)">
<B>update</B> (<A HREF="Observable.html" >Observable</A>*) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
update method for an <A HREF="Observer.html" >Observer</A>/<A HREF="Observable.html" >Observable</A> design pattern.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>boolean
<A NAME="valid()">
<B>valid</B> () </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
for checking if istream constructor was successfull (if de-serialization
was successful).
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>virtual
<A NAME="~OverlayComp()">
<B>~OverlayComp</B> () </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
<br>
</UL></FONT><br>
</UL><br><br>
<FONT FACE=Times SIZE=4><B>Protected:</B></FONT><br><br><UL>
<DT><FONT FACE=Helvetica><A HREF="ParamList.html" >ParamList</A>*
<A NAME="GetParamList()">
<B>GetParamList</B> () </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
return <A HREF="ParamList.html" >ParamList</A> of required/optional/keyword arguments to be read
from an external (serialized) representation in the istream constructor
of a component. Includes pointers to static methods that read portions of
an istream. keyword arguments (or fields) not found in the <A HREF="ParamList.html" >ParamList</A> are
used to construct a new entry in the components property list instead of
being handled by one of the static methods.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>void
<A NAME="GrowParamList(ParamList*)">
<B>GrowParamList</B> (<A HREF="ParamList.html" >ParamList</A>*) </FONT>
<DD><FONT FACE=Times SIZE=3><UL>
construct the <A HREF="ParamList.html" >ParamList</A> for this class if one does not exist, optionally
using similar base class methods to assist.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>char*
<A NAME="_anno">
<B>_anno</B>
<DD><FONT FACE=Times SIZE=3><UL>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica><A HREF="AttributeList.html" >AttributeList</A>*
<A NAME="_attrlist">
<B>_attrlist</B>
<DD><FONT FACE=Times SIZE=3><UL>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>static <A HREF="ParamList.html" >ParamList</A>*
<A NAME="_overlay_comp_params">
<B>_overlay_comp_params</B>
<DD><FONT FACE=Times SIZE=3><UL>
static holder for this classes <A HREF="ParamList.html" >ParamList</A>.
<br>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica><A HREF="OverlayComp.html" >OverlayComp</A>*
<A NAME="_parent">
<B>_parent</B>
<DD><FONT FACE=Times SIZE=3><UL>
<br>
</UL></FONT><br>
<DT><FONT FACE=Helvetica>boolean
<A NAME="_valid">
<B>_valid</B>
<DD><FONT FACE=Times SIZE=3><UL>
<br>
</UL></FONT><br>
</UL><br><br>
<FONT FACE=Times SIZE=4><B>Friend methods:</B></FONT><br><br><UL>
<DT><FONT FACE=Helvetica>
friend
<A NAME="OverlayScript">
<B>OverlayScript</B>
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</UL></FONT><br>
<DT><FONT FACE=Helvetica>
friend
<A NAME="OverlaysScript">
<B>OverlaysScript</B>
<DD><FONT FACE=Times SIZE=3><UL>
<br>
</UL></FONT><br>
</UL><br><br>
<A HREF="../index.html">(more documentation)</A>
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