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"
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COPYRIGHT (c) 1991-93 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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ScrollableView subclass:#HVScrollableView
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instanceVariableNames:'hScrollBar'
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classVariableNames:''
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poolDictionaries:''
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category:'Views-Basic'
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!
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HVScrollableView comment:'
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COPYRIGHT (c) 1991-93 by Claus Gittinger
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All Rights Reserved
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a view containing both horizontal and vertical scrollbars
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and some other (slave-)view
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3
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$Header: /cvs/stx/stx/libwidg/HVScrollableView.st,v 1.2 1993-10-13 01:02:29 claus Exp $
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0
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written jan 91 by claus
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'!
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!HVScrollableView methodsFor:'initialization'!
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initializeFor:aViewClass
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|negativeOffset halfMargin|
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super initializeFor:aViewClass.
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negativeOffset := borderWidth negated.
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halfMargin := innerMargin // 2.
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"create the horizontal scrollbar and change vertical scrollbars size"
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hScrollBar := HorizontalScrollBar in:self.
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self is3D ifTrue:[
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scrollBar extent:[scrollBar width
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@
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(height - hScrollBar height - innerMargin)
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]
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] ifFalse:[
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aViewClass isNil ifTrue:[
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scrollBar extent:[scrollBar width
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@
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(height - hScrollBar height
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- (1 * hScrollBar borderWidth))
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]
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] ifFalse:[
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scrollBar extent:[scrollBar width
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@
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(height - hScrollBar height
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- hScrollBar borderWidth
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- scrolledView borderWidth)
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]
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]
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].
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hScrollBar thumbOrigin:0 thumbHeight:100.
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hScrollBar scrollAction:[:position |
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scrolledView scrollHorizontalToPercent:position].
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hScrollBar scrollLeftAction:[scrolledView scrollLeft].
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hScrollBar scrollRightAction:[scrolledView scrollRight].
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self is3D ifTrue:[
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hScrollBar origin:[(scrollBar origin x + scrollBar width + innerMargin)
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@
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(height - hScrollBar height - halfMargin)
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]
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extent:[(width - scrollBar width - (innerMargin * 2))
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@
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hScrollBar height
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]
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] ifFalse:[
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hScrollBar origin:[(scrollBar origin x + scrollBar width + scrollBar borderWidth)
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@
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(height - hScrollBar height - (hScrollBar borderWidth "* 2"))
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]
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extent:[(width - scrollBar width) @ hScrollBar height
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]
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].
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"redefine subviews size"
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self is3D ifTrue:[
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helpView extent:[(width - scrollBar width - (innerMargin * 2))
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@
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(height - hScrollBar height - (innerMargin * 2))
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]
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] ifFalse:[
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scrolledView notNil ifTrue:[
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scrolledView
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extent:[(width
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- scrollBar width
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- scrollBar borderWidth
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- scrolledView borderWidth)
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@
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(height
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- hScrollBar height
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- hScrollBar borderWidth
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- scrolledView borderWidth)
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]
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].
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].
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scrolledView notNil ifTrue:[
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scrolledView
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originChangeAction:[:aView | scrollBar setThumbOriginFor:aView.
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hScrollBar setThumbOriginFor:aView].
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scrolledView
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contentsChangeAction:[:aView | scrollBar setThumbFor:aView.
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hScrollBar setThumbFor:aView]
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]
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!
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realize
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super realize.
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hScrollBar setThumbFor:scrolledView
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! !
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!HVScrollableView methodsFor:'accessing'!
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scrolledView:aView
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super scrolledView:aView.
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"redefine subviews size"
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self is3D ifFalse:[
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scrolledView
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extent:[(width
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- scrollBar width
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- scrollBar borderWidth
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"- scrolledView borderWidth")
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@
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(height
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- hScrollBar height
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- hScrollBar borderWidth
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"- scrolledView borderWidth")
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]
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].
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scrolledView
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originChangeAction:[:aView | scrollBar setThumbOriginFor:aView.
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hScrollBar setThumbOriginFor:aView].
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scrolledView
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contentsChangeAction:[:aView | scrollBar setThumbFor:aView.
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hScrollBar setThumbFor:aView]
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! !
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!HVScrollableView methodsFor:'event processing'!
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sizeChanged:how
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super sizeChanged:how.
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hScrollBar setThumbFor:scrolledView
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! !
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