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"
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COPYRIGHT (c) 1993 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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SimpleView subclass:#HorizontalScale
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instanceVariableNames:'slider range action'
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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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!HorizontalScale class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 1993 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/libwidg2/HorizontalScale.st,v 1.3 1995-05-03 00:42:29 claus Exp $
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"
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!
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documentation
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"
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like a slider, but with a range (i.e. may be different from 0..100)
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and displaying the current value.
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"
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! !
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!HorizontalScale methodsFor:'slider actions'!
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scroll:percent
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|value x label|
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action notNil ifTrue:[
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value := (range last - range first) * (percent / 100).
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value := value + range first.
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action value:value.
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x := slider thumbFrame left + (slider thumbFrame width // 2).
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self clear.
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self paint:Black.
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value := value roundTo:(range last - range first) / 100.
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label := value asFloat printString.
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(label endsWith:'.0') ifTrue:[
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label := value asInteger printString
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].
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self displayString:label
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x:x + ((font widthOf:label) // 2)
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y:slider height + device verticalPixelPerMillimeter
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1
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]
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! !
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!HorizontalScale methodsFor:'accessing'!
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range:anInterval
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range := anInterval
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!
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scrollAction:aBlock
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action := aBlock
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! !
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!HorizontalScale methodsFor:'initialization'!
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initialize
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super initialize.
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range := (0 to:100).
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slider := HorizontalSlider in:self.
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slider origin:0.0 @ (font height + device verticalPixelPerMillimeter rounded).
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slider extent:1.0 @ slider height.
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self height:(slider height
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+ (font height)
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+ (device verticalPixelPerMillimeter * 2) rounded).
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slider scrollAction:[:percent | self scroll:percent].
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! !
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