MiniScroller.st
author ca
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 COPYRIGHT (c) 1994 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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Scroller subclass:#MiniScroller
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	 instanceVariableNames:''
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	 classVariableNames:''
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	 poolDictionaries:''
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	 category:'Views-Interactors'
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!
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!MiniScroller class methodsFor:'documentation'!
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copyright
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 COPYRIGHT (c) 1994 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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documentation
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    like a scroller, but taking less screen space
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! !
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!MiniScroller methodsFor:'initialization'!
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initStyle
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    |style lvl|
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    super initStyle.
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    style := StyleSheet name.
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    style == #iris ifTrue:[
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	tallyLevel := 0.
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	tallyMarks := 0.
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	thumbEdgeStyle := nil.
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	thumbLevel := 2.
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    ].
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    ((style ~~ #normal) and:[style ~~ #mswindows]) ifTrue:[
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	style == #st80 ifTrue:[
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	    lvl := 1.
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	] ifFalse:[
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	    lvl := -1.
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	].
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	self level:lvl.
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	self borderWidth:0
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    ].
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    shadowForm := lightForm := nil.
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    fixThumbHeight := false
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! !
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!MiniScroller methodsFor:'queries'!
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preferredExtent
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    "make my width very small"
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    |w h mm|
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    h := self class defaultExtent y.
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    mm := (thumbLevel ~~ 0) ifTrue:[2.5] ifFalse:[2.0].
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    w := (device horizontalPixelPerMillimeter asFloat * mm) rounded.
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    ^ w @ h.
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! !
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!MiniScroller class methodsFor:'documentation'!
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version
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    ^ '$Header: /cvs/stx/stx/libwidg/MiniScroller.st,v 1.6 1995-11-23 18:18:30 cg Exp $'
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! !