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"
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COPYRIGHT (c) 1995 by Claus Gittinger
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All Rights Reserved
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88
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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Object subclass:#Layout
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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category:'Graphics-Geometry'
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!
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!Layout class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 1995 by Claus Gittinger
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93
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All Rights Reserved
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88
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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!
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documentation
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"
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This is an abstract superclass for geometry controlling objects.
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While old smalltalks used relative origin/extent/corner and absolute
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origin/corner/extents, these mechanisms are now being removed from the
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view itself into geometry controlling objects, which are given a superviews
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size and are to return a components size upon request.
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This allows more flexible geometry management, since any algorithm can
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be implemented (if the existing ones are not sufficient, add you own subclass
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and instal it as layout-object in your view).
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See more info & examples in concrete subclasses:
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LayoutOrigin LayoutFrame AlignmentOrigin
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Notice: this class was implemented using protocol information
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from alpha testers - it may not be complete or compatible to
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the corresponding ST-80 class. If you encounter any incompatibilities,
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please forward a note to the ST/X team.
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!
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version
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"
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$Header: /cvs/stx/stx/libview2/Layout.st,v 1.4 1995-08-29 16:12:37 claus Exp $
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"
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! !
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!Layout class methodsFor:'instance creation'!
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new
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^ self basicNew initialize
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! !
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!Layout methodsFor:'queries'!
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rectangleRelativeTo:superRectangle preferred:prefRect
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^ self subclassResponsibility
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!
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isLayout
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^ true
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! !
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!Layout methodsFor:'initialization'!
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initialize
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^ self subclassResponsibility
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! !
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