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0
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"
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5
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COPYRIGHT (c) 1989 by Claus Gittinger
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59
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All Rights Reserved
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0
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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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View subclass:#ScrollableView
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7
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instanceVariableNames:'scrolledView scrollBar helpView innerMargin
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scrollBarPosition'
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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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ScrollableView comment:'
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5
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COPYRIGHT (c) 1989 by Claus Gittinger
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59
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All Rights Reserved
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38
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63
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$Header: /cvs/stx/stx/libwidg/Attic/ScrView.st,v 1.8 1994-11-17 14:38:28 claus Exp $
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38
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'!
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!ScrollableView class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 1989 by Claus Gittinger
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59
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All Rights Reserved
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38
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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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37 |
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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63
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$Header: /cvs/stx/stx/libwidg/Attic/ScrView.st,v 1.8 1994-11-17 14:38:28 claus Exp $
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38
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"
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!
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documentation
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"
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a view containing a scrollbar and some other (slave-)view.
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There are two ways to create a ScrollableView:
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if the type of the view to be scrolled is known in advance,
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use:
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v := ScrollableView for:<ViewClass> in:someSuperView.
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38
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otherwise, create the scrollableView empty with:
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v := ScrollableView in:someSuperView.
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...
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v scrolledView:aViewToBeScrolled
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"
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!
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examples
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"
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example1:
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|top scr txt|
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0
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top := StandardSystemView label:'example'.
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scr := ScrollableView for:EditTextView in:top.
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scr origin:0.0@0.0 corner:1.0@1.0.
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txt := scr scrolledView.
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txt list:#('line1'
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'line2'
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'line3'
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'line4'
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'line5'
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'line6').
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top open
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example2:
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|top scr txt1 txt2|
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top := StandardSystemView label:'example'.
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scr := ScrollableView in:top.
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scr origin:0.0@0.0 corner:1.0@1.0.
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top open.
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0
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(Delay forSeconds:5) wait.
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38
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txt1 := EditTextView new.
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txt1 list:#('line1'
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'line2'
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'line3'
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'line4'
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'line5'
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'line6').
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scr scrolledView:txt1.
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(Delay forSeconds:5) wait.
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txt2 := EditTextView new.
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txt2 list:#('alternative line1'
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'alternative line2'
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'alternative line3'
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'alternative line4'
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'alternative line5'
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'alternative line6').
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scr scrolledView:txt2.
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"
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! !
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!ScrollableView class methodsFor:'instance creation'!
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in:aView
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"return a new scrolling view to be contained in aView.
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There is no slave view now - this has to be set later via
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the scrolledView: method.
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The view will have full scrollbars."
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^ self for:nil miniScrollerH:false miniScrollerV:false in:aView
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!
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for:aViewClass
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"return a new scrolling view scrolling an instance of aViewClass.
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The subview is created here.
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The view will have full scrollbars."
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^ self for:aViewClass miniScrollerH:false miniScrollerV:false in:nil
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!
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for:aViewClass in:aView
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"return a new scrolling view scrolling an instance of aViewClass.
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The subview is created here.
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The view will have full scrollbars."
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^ self for:aViewClass miniScrollerH:false miniScrollerV:false in:aView
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!
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142 |
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for:aViewClass miniScroller:mini in:aView
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"return a new scrolling view scrolling an instance of aViewClass.
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The subview is created here.
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The view will have full scrollbars if mini is false, miniscrollers
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if true."
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^ self for:aViewClass miniScrollerH:mini miniScrollerV:mini in:aView
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!
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151 |
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for:aViewClass miniScrollerH:miniH miniScrollerV:miniV in:aView
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153 |
"return a new scrolling view scrolling an instance of aViewClass.
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The subview is created here.
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The view will have full scrollbars if the corresponding miniH/miniV
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is false, miniscrollers if false."
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157 |
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0
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|newView|
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159 |
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aView notNil ifTrue:[
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newView := self basicNew.
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newView device:(aView device).
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aView addSubView:newView
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0
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] ifFalse:[
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"create on Display by default"
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newView := self new.
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].
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newView initializeFor:aViewClass miniScrollerH:miniH miniScrollerV:miniV.
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^ newView
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! !
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!ScrollableView methodsFor:'initialization'!
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initialize
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"default setup: full scrollers"
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^ self initializeFor:nil miniScrollerH:false miniScrollerV:false
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0
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!
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initializeFor:aViewClass miniScrollerH:miniH miniScrollerV:miniV
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|negativeOffset twoMargins halfMargin cls isST80 is3D|
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0
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182 |
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super initialize.
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isST80 := StyleSheet name = #st80.
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38
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style == #openwin ifTrue:[self level:0].
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is3D := StyleSheet is3D.
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189 |
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isST80 ifTrue:[
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innerMargin := 0
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|
192 |
] ifFalse:[
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|
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is3D ifTrue:[
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|
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innerMargin := ViewSpacing.
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] ifFalse:[
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innerMargin := 0
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]
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].
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0
|
199 |
negativeOffset := borderWidth negated.
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200 |
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"create the scrollbar"
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202 |
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isST80 ifTrue:[
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cls := ScrollBar
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] ifFalse:[
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|
206 |
cls := miniV ifTrue:[MiniScroller] ifFalse:[ScrollBar].
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207 |
].
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208 |
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209 |
scrollBar := cls in:self.
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0
|
210 |
scrollBar thumbOrigin:0 thumbHeight:100.
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211 |
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"create the subview"
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is3D ifTrue:[
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twoMargins := innerMargin * 2.
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|
215 |
halfMargin := innerMargin // 2.
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0
|
216 |
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59
|
217 |
aViewClass notNil ifTrue:[
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|
218 |
scrolledView := aViewClass in:self.
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|
219 |
style == #openwin ifTrue:[
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scrolledView level:0.
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221 |
scrolledView borderWidth:1
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|
222 |
] ifFalse:[
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|
223 |
isST80 ifTrue:[
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|
224 |
scrolledView level:1.
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|
225 |
] ifFalse:[
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|
226 |
scrolledView level:-1
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227 |
]
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|
228 |
].
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229 |
].
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|
230 |
(scrollBarPosition == #right) ifTrue:[
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|
231 |
scrollBar origin:[width - scrollBar extent x
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|
232 |
- (scrollBar borderWidth * 2)
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|
233 |
- halfMargin
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|
234 |
@
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|
235 |
halfMargin]
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|
236 |
extent:[scrollBar extent x @ (height - innerMargin)].
|
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38
|
237 |
|
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59
|
238 |
scrolledView notNil ifTrue:[
|
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|
239 |
scrolledView origin:halfMargin asPoint
|
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|
240 |
extent:[(width -
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|
241 |
scrollBar width -
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|
242 |
twoMargins)
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|
243 |
@
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|
244 |
(height - innerMargin)].
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|
245 |
]
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|
246 |
] ifFalse:[
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|
247 |
scrollBar origin:halfMargin asPoint
|
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|
248 |
extent:[scrollBar extent x @ (height - innerMargin)].
|
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38
|
249 |
|
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59
|
250 |
scrolledView notNil ifTrue:[
|
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|
251 |
scrolledView origin:((scrollBar origin x + scrollBar width + innerMargin)
|
|
|
252 |
@
|
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|
253 |
halfMargin)
|
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|
254 |
extent:[(width - scrollBar width - twoMargins)
|
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|
255 |
@
|
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|
256 |
(height - innerMargin)].
|
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|
257 |
]
|
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|
258 |
].
|
|
0
|
259 |
] ifFalse:[
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59
|
260 |
(scrollBarPosition == #right) ifTrue:[
|
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|
261 |
scrollBar origin:[width - scrollBar extent x
|
|
|
262 |
- scrollBar borderWidth
|
|
|
263 |
@
|
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|
264 |
negativeOffset]
|
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|
265 |
] ifFalse:[
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|
266 |
scrollBar origin:negativeOffset asPoint
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|
267 |
].
|
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|
268 |
scrollBar extent:[scrollBar extent x @ (height "+ (scrollBar borderWidth * 1)")].
|
|
0
|
269 |
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59
|
270 |
aViewClass notNil ifTrue:[
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|
271 |
scrolledView := aViewClass in:self.
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|
272 |
(scrollBarPosition == #right) ifTrue:[
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|
273 |
scrolledView origin:scrolledView borderWidth negated asPoint
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|
274 |
] ifFalse:[
|
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|
275 |
scrolledView origin:((scrollBar width +
|
|
|
276 |
scrollBar borderWidth -
|
|
|
277 |
scrolledView borderWidth)
|
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|
278 |
@
|
|
|
279 |
scrolledView borderWidth negated)
|
|
|
280 |
].
|
|
|
281 |
scrolledView extent:[(width - scrollBar width - scrolledView borderWidth)
|
|
|
282 |
@
|
|
|
283 |
(height + (scrollBar borderWidth))
|
|
|
284 |
]
|
|
|
285 |
].
|
|
0
|
286 |
].
|
|
|
287 |
scrolledView notNil ifTrue:[
|
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59
|
288 |
self setScrollActions.
|
|
|
289 |
"
|
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|
290 |
pass input to myself (and other subviews) to
|
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|
291 |
the scrolled view
|
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|
292 |
"
|
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|
293 |
self keyboardHandler:scrolledView.
|
|
0
|
294 |
]
|
|
|
295 |
!
|
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|
296 |
|
|
7
|
297 |
initStyle
|
|
|
298 |
super initStyle.
|
|
|
299 |
|
|
59
|
300 |
scrollBarPosition := StyleSheet at:'scrollBarPosition' default:#left
|
|
7
|
301 |
!
|
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|
302 |
|
|
0
|
303 |
realize
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|
304 |
super realize.
|
|
38
|
305 |
|
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0
|
306 |
"since scrolledview may have done something to its contents
|
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|
307 |
during init-time we had no chance yet to catch contents-
|
|
|
308 |
changes; do it now
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|
309 |
"
|
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38
|
310 |
scrolledView notNil ifTrue:[
|
|
59
|
311 |
scrollBar setThumbFor:scrolledView
|
|
38
|
312 |
]
|
|
0
|
313 |
! !
|
|
|
314 |
|
|
7
|
315 |
!ScrollableView methodsFor:'private'!
|
|
|
316 |
|
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|
317 |
setScrollActions
|
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|
318 |
|lock|
|
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|
319 |
|
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|
320 |
"lock prevents repositioning the scroller to the
|
|
|
321 |
actual (often rounded) position while scrolling,
|
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|
322 |
and keeps it instead at the pointer position.
|
|
|
323 |
|
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|
324 |
(this avoids run-away scroller when scrolling
|
|
|
325 |
textviews, when the text is aligned line-wise).
|
|
38
|
326 |
Consider this as a kludge."
|
|
7
|
327 |
|
|
|
328 |
lock := false.
|
|
|
329 |
|
|
|
330 |
scrollBar scrollAction:[:position |
|
|
59
|
331 |
lock := true.
|
|
|
332 |
scrolledView scrollVerticalToPercent:position.
|
|
|
333 |
lock := false
|
|
7
|
334 |
].
|
|
|
335 |
scrollBar scrollUpAction:[scrolledView scrollUp].
|
|
|
336 |
scrollBar scrollDownAction:[scrolledView scrollDown].
|
|
|
337 |
|
|
|
338 |
scrolledView originChangeAction:[:aView |
|
|
59
|
339 |
lock ifFalse:[
|
|
|
340 |
scrollBar setThumbOriginFor:aView.
|
|
|
341 |
]
|
|
7
|
342 |
].
|
|
|
343 |
scrolledView contentsChangeAction:[:aView |
|
|
59
|
344 |
scrollBar setThumbFor:aView.
|
|
7
|
345 |
]
|
|
|
346 |
! !
|
|
|
347 |
|
|
0
|
348 |
!ScrollableView methodsFor:'accessing'!
|
|
|
349 |
|
|
|
350 |
scrollBar
|
|
|
351 |
"return the scrollbar"
|
|
|
352 |
|
|
|
353 |
^ scrollBar
|
|
|
354 |
!
|
|
|
355 |
|
|
|
356 |
scrolledView
|
|
|
357 |
"return the scrolled view"
|
|
|
358 |
|
|
|
359 |
^ scrolledView
|
|
|
360 |
!
|
|
|
361 |
|
|
|
362 |
scrolledView:aView
|
|
38
|
363 |
"set the view to scroll"
|
|
|
364 |
|
|
|
365 |
|halfMargin twoMargins|
|
|
0
|
366 |
|
|
|
367 |
scrolledView notNil ifTrue:[
|
|
59
|
368 |
scrolledView destroy.
|
|
|
369 |
scrolledView := nil.
|
|
0
|
370 |
].
|
|
|
371 |
scrolledView := aView.
|
|
|
372 |
|
|
38
|
373 |
((style ~~ #normal) and:[style ~~ #mswindows]) ifTrue:[
|
|
59
|
374 |
"3D look"
|
|
38
|
375 |
|
|
59
|
376 |
twoMargins := innerMargin * 2.
|
|
|
377 |
halfMargin := innerMargin // 2.
|
|
0
|
378 |
|
|
59
|
379 |
style == #openwin ifTrue:[
|
|
|
380 |
scrolledView level:0.
|
|
|
381 |
scrolledView borderWidth:1
|
|
|
382 |
] ifFalse:[
|
|
|
383 |
scrolledView level:-1
|
|
|
384 |
].
|
|
38
|
385 |
|
|
59
|
386 |
(scrollBarPosition == #right) ifTrue:[
|
|
|
387 |
scrolledView
|
|
|
388 |
origin:halfMargin asPoint
|
|
|
389 |
extent:[(width -
|
|
|
390 |
scrollBar width -
|
|
|
391 |
twoMargins)
|
|
|
392 |
@
|
|
|
393 |
(height - innerMargin)
|
|
|
394 |
].
|
|
|
395 |
] ifFalse:[
|
|
|
396 |
scrolledView
|
|
|
397 |
origin:((scrollBar origin x
|
|
|
398 |
+ scrollBar width
|
|
|
399 |
+ innerMargin)
|
|
|
400 |
@
|
|
|
401 |
halfMargin)
|
|
|
402 |
extent:[(width
|
|
|
403 |
- scrollBar width
|
|
|
404 |
- twoMargins)
|
|
|
405 |
@
|
|
|
406 |
(height - innerMargin)
|
|
|
407 |
].
|
|
|
408 |
]
|
|
38
|
409 |
] ifFalse:[
|
|
59
|
410 |
"non 3D look"
|
|
|
411 |
(scrollBarPosition == #right) ifTrue:[
|
|
|
412 |
scrolledView
|
|
|
413 |
origin:scrolledView borderWidth negated asPoint
|
|
|
414 |
] ifFalse:[
|
|
|
415 |
scrolledView
|
|
|
416 |
origin:((scrollBar width
|
|
|
417 |
+ scrollBar borderWidth
|
|
|
418 |
- scrolledView borderWidth)
|
|
|
419 |
@
|
|
|
420 |
scrolledView borderWidth negated)
|
|
|
421 |
].
|
|
|
422 |
scrolledView
|
|
|
423 |
extent:[
|
|
|
424 |
(width
|
|
|
425 |
- scrollBar width
|
|
|
426 |
- scrolledView borderWidth)
|
|
|
427 |
@
|
|
|
428 |
(height
|
|
|
429 |
+ (scrollBar borderWidth))
|
|
|
430 |
]
|
|
0
|
431 |
].
|
|
|
432 |
|
|
38
|
433 |
super addSubView:scrolledView.
|
|
|
434 |
self setScrollActions.
|
|
|
435 |
"
|
|
|
436 |
pass input to myself (and other subviews) to
|
|
|
437 |
the scrolled view
|
|
|
438 |
"
|
|
|
439 |
self keyboardHandler:scrolledView.
|
|
|
440 |
|
|
|
441 |
realized ifTrue:[
|
|
59
|
442 |
self sizeChanged:nil.
|
|
|
443 |
scrolledView realize
|
|
38
|
444 |
].
|
|
0
|
445 |
! !
|
|
|
446 |
|
|
|
447 |
!ScrollableView methodsFor:'slave-view messages'!
|
|
|
448 |
|
|
|
449 |
leftButtonMenu
|
|
38
|
450 |
"return scrolledViews leftbuttonmenu"
|
|
|
451 |
|
|
|
452 |
scrolledView isNil ifTrue:[^ nil].
|
|
0
|
453 |
^ scrolledView leftButtonMenu
|
|
|
454 |
!
|
|
|
455 |
|
|
|
456 |
leftButtonMenu:aMenu
|
|
|
457 |
"pass on leftbuttonmenu to scrolledView"
|
|
|
458 |
|
|
|
459 |
scrolledView leftButtonMenu:aMenu
|
|
|
460 |
!
|
|
|
461 |
|
|
|
462 |
middleButtonMenu
|
|
38
|
463 |
"return scrolledViews middlebuttonmenu"
|
|
|
464 |
|
|
|
465 |
scrolledView isNil ifTrue:[^ nil].
|
|
0
|
466 |
^ scrolledView middleButtonMenu
|
|
|
467 |
!
|
|
|
468 |
|
|
|
469 |
middleButtonMenu:aMenu
|
|
|
470 |
"pass on middlebuttonmenu to scrolledView"
|
|
|
471 |
|
|
|
472 |
scrolledView middleButtonMenu:aMenu
|
|
|
473 |
!
|
|
|
474 |
|
|
|
475 |
rightButtonMenu
|
|
38
|
476 |
"return scrolledViews rightbuttonmenu"
|
|
|
477 |
|
|
|
478 |
scrolledView isNil ifTrue:[^ nil].
|
|
0
|
479 |
^ scrolledView rightButtonMenu
|
|
|
480 |
!
|
|
|
481 |
|
|
|
482 |
rightButtonMenu:aMenu
|
|
|
483 |
"pass on rightbuttonmenu to scrolledView"
|
|
|
484 |
|
|
|
485 |
scrolledView rightButtonMenu:aMenu
|
|
|
486 |
!
|
|
|
487 |
|
|
|
488 |
doesNotUnderstand:aMessage
|
|
|
489 |
"this is funny: all message we do not understand, are passed
|
|
|
490 |
on to the scrolledView - so we do not have to care for all
|
|
|
491 |
possible messages ...(thanks to the Message class)"
|
|
|
492 |
|
|
|
493 |
scrolledView isNil ifFalse:[
|
|
59
|
494 |
^ scrolledView perform:(aMessage selector)
|
|
|
495 |
withArguments:(aMessage arguments)
|
|
0
|
496 |
]
|
|
|
497 |
! !
|
|
|
498 |
|
|
38
|
499 |
!ScrollableView methodsFor:'forced scroll'!
|
|
|
500 |
|
|
|
501 |
pageUp
|
|
|
502 |
"page up"
|
|
|
503 |
|
|
|
504 |
scrollBar pageUp
|
|
|
505 |
!
|
|
|
506 |
|
|
|
507 |
pageDown
|
|
|
508 |
"page down"
|
|
|
509 |
|
|
|
510 |
scrollBar pageDown
|
|
|
511 |
! !
|
|
|
512 |
|
|
0
|
513 |
!ScrollableView methodsFor:'event processing'!
|
|
|
514 |
|
|
38
|
515 |
keyPress:key x:x y:y
|
|
|
516 |
"a key was pressed - handle page-keys here"
|
|
|
517 |
|
|
|
518 |
(key == #Prior) ifTrue: [^ self pageUp].
|
|
|
519 |
(key == #Next) ifTrue: [^ self pageDown].
|
|
|
520 |
|
|
|
521 |
super keyPress:key x:x y:y
|
|
|
522 |
!
|
|
|
523 |
|
|
0
|
524 |
sizeChanged:how
|
|
|
525 |
super sizeChanged:how.
|
|
38
|
526 |
scrolledView notNil ifTrue:[
|
|
59
|
527 |
scrollBar setThumbFor:scrolledView
|
|
38
|
528 |
]
|
|
0
|
529 |
! !
|