ColoredListEntry.st
author Claus Gittinger <cg@exept.de>
Tue, 21 Nov 1995 14:34:54 +0100
changeset 93 f3158d8e67d0
parent 88 d591b16c8f46
child 97 306cb0aa67be
permissions -rw-r--r--
handle tabs in strings
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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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'From Smalltalk/X, Version:2.10.5 on 15-may-1995 at 8:03:34 am'!
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ListEntry subclass:#ColoredListEntry
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	 instanceVariableNames:'color string bgColor'
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	 classVariableNames:''
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	 poolDictionaries:''
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	 category:'Views-Support'
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!
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!ColoredListEntry 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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    ^ '$Header: /cvs/stx/stx/libwidg2/ColoredListEntry.st,v 1.6 1995-11-21 13:34:54 cg Exp $'
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!
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documentation
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    Instances of ColoredListEntry can be used in place of strings
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    as entries of the list in a ListView or SelectionInListView.
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    Notice: this is a temporary kludge class which will be made obsolete,
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	    once full-attributed strings are available.
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"
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!
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examples
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"
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     putting colored entries into a SelectionInListView
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     (instead of strings)'
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	|v e myList tabs|
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	myList := OrderedCollection new.
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	myList add:(ColoredListEntry string:'red' color:Color red).
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	myList add:(ColoredListEntry string:'green' color:Color green).
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	myList add:(ColoredListEntry string:'blue' color:Color blue).
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	myList add:(ColoredListEntry string:'white' color:Color white).
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	myList add:(ColoredListEntry string:'black' color:Color black).
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	myList add:(ColoredListEntry string:'yellow' color:Color yellow).
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	v := SelectionInListView new.
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	v setList:myList expandTabs:false.
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	v open
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     in a popUpList (sorry, Labels do not (yet) know how to display
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     non-strings.
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	|v e myList selList tabs|
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	myList := OrderedCollection new.
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	myList add:(ColoredListEntry string:'red' color:Color red).
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	myList add:(ColoredListEntry string:'green' color:Color green).
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	myList add:(ColoredListEntry string:'blue' color:Color blue).
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	myList add:(ColoredListEntry string:'white' color:Color white).
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	myList add:(ColoredListEntry string:'black' color:Color black).
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	myList add:(ColoredListEntry string:'yellow' color:Color yellow).
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	selList := SelectionInList new list:myList.
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	v := PopUpList on:selList.
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	v open
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"
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! !
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!ColoredListEntry class methodsFor:'instance creation'!
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string:aString color:aColor
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    ^ self new string:aString color:aColor
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!
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string:aString foregroundColor:fgColor backgroundColor:bgColor
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    ^ self new string:aString foregroundColor:fgColor backgroundColor:bgColor
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! !
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!ColoredListEntry methodsFor:'drawing'!
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displayOn:aGC x:x y:y
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    "display the receiver on a GC"
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    |savedPaint savedBgPaint|
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    savedPaint := aGC paint.
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    bgColor notNil ifTrue:[
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	savedBgPaint := aGC backgroundPaint.
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	aGC paint:color on:bgColor.
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	aGC displayOpaqueString:(string withTabsExpanded) x:x y:y.
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	aGC paint:savedPaint on:savedBgPaint
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    ] ifFalse:[
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	aGC paint:color.
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	aGC displayString:(string withTabsExpanded) x:x y:y.
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	aGC paint:savedPaint
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    ]
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    "Modified: 16.11.1995 / 16:54:40 / cg"
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! !
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!ColoredListEntry methodsFor:'accessing'!
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string:aString color:aColor
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    string := aString.
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    color := aColor
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!
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string:aString foregroundColor:fg backgroundColor:bg
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    string := aString.
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    color := fg.
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    bgColor := bg.
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    "Created: 16.11.1995 / 16:53:17 / cg"
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! !
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!ColoredListEntry methodsFor:'converting'!
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string
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    ^ string
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!
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asString
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    ^ string
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! !
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!ColoredListEntry methodsFor:'queries'!
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widthIn:aGC
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    "return the width of the receiver when displayed in aGC"
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    ^ aGC font widthOf:(string withTabsExpanded)
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! !