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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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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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LayoutOrigin subclass:#AlignmentOrigin
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instanceVariableNames:'leftAlignmentFraction topAlignmentFraction'
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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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88
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!AlignmentOrigin 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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All Rights Reserved
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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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version
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"
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$Header: /cvs/stx/stx/libview2/Attic/AlignOrg.st,v 1.2 1995-08-10 18:43:06 claus Exp $
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"
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! !
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!AlignmentOrigin methodsFor:'accessing'!
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leftAlignmentFraction:something
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"set leftAlignmentFraction"
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leftAlignmentFraction := something.
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!
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leftAlignmentFraction
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"return leftAlignmentFraction"
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^ leftAlignmentFraction
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!
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topAlignmentFraction:something
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"set topAlignmentFraction"
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topAlignmentFraction := something.
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!
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topAlignmentFraction
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"return topAlignmentFraction"
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^ topFraction
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! !
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!AlignmentOrigin methodsFor:'printing & storing'!
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displayString
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^ 'LayoutOrigin('
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, 'l: ' , leftFraction displayString
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, '+' , leftOffset displayString
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, ' t: ' , topFraction displayString
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, '+' , topOffset displayString
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, ' a: ' , leftAlignmentFraction displayString
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, '@' , topAlignmentFraction displayString
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, ')'
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! !
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!AlignmentOrigin methodsFor:'queries'!
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rectangleRelativeTo:superRectangle preferred:prefRect
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|x y|
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leftOffset isNil ifTrue:[
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x := 0
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] ifFalse:[
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x := leftOffset
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].
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topOffset isNil ifTrue:[
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y := 0
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] ifFalse:[
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y := topOffset
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].
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leftFraction notNil ifTrue:[
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x := x + (superRectangle width * leftFraction)
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].
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topFraction notNil ifTrue:[
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y := y + (superRectangle height * topFraction)
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].
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leftAlignmentFraction ~~ 0 ifTrue:[
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x := x - (prefRect width * leftAlignmentFraction)
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].
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topAlignmentFraction ~~ 0 ifTrue:[
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y := y - (prefRect height * topAlignmentFraction)
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].
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^ Rectangle origin:x@y extent:prefRect extent
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"
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|superRect aO|
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superRect := 0@0 corner:100@100.
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aO := (AlignmentOrigin new).
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aO leftFraction:0.5;
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topFraction:0.5;
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leftAlignmentFraction:0.5;
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topAlignmentFraction:0.5.
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aO rectangleRelativeTo:superRect preferred:(0@0 corner:30@30)
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"
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! !
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!AlignmentOrigin methodsFor:'initialization'!
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initialize
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super initialize.
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leftAlignmentFraction := topAlignmentFraction := 0.
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! !
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