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"
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COPYRIGHT (c) 1996 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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CharacterArray subclass:#Text
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instanceVariableNames:'string runs'
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classVariableNames:''
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poolDictionaries:''
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category:'Collections-Text'
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!
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!Text class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 1996 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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documentation
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"
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Texts add emphasis information to a string.
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This class is not yet fully implemented - being constructed.
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[author:]
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Claus Gittinger
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[see also:]
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CharacterArray String RunArray
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"
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! !
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!Text class methodsFor:'instance creation'!
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fromString:aString
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^ self new string:aString emphasis:nil
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"
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Text fromString:'hello'
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"
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"Modified: 11.5.1996 / 14:20:35 / cg"
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!
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new:size
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"redefined for string-protocol compatibility"
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^ self string:(String new:size)
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"Created: 12.5.1996 / 11:57:27 / cg"
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!
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string:aString
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^ self new string:aString emphasis:nil
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"
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Text string:'hello'
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"
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"Modified: 11.5.1996 / 14:20:48 / cg"
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!
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string:aString emphasis:attribute
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^ self new string:aString emphasis:attribute
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"
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Text string:'hello' emphasis:#bold
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"
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"Modified: 11.5.1996 / 14:21:01 / cg"
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! !
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!Text methodsFor:'comparing'!
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= aStringOrText
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"compare the receiver and the argument, ignoring emphasis"
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^ string = aStringOrText string
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"
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'hello' asText = 'hello'
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'hello' asText = 'hello' asText
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'hello' asText allBold = 'hello'
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"
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"Modified: 11.5.1996 / 14:33:00 / cg"
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! !
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!Text methodsFor:'converting'!
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asText
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^ self
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"Created: 11.5.1996 / 14:08:36 / cg"
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!
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at:characterIndex
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^ string at:characterIndex
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"Created: 11.5.1996 / 14:25:41 / cg"
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!
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at:characterIndex put:aCharacter
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^ string at:characterIndex put:aCharacter
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"Created: 11.5.1996 / 14:25:49 / cg"
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! !
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!Text methodsFor:'copying'!
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, aStringOrText
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"for now, return a string ..."
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^ self species new
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string:(string , aStringOrText)
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runs:(runs , aStringOrText runs)
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"Created: 11.5.1996 / 13:59:54 / cg"
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307
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! !
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!Text methodsFor:'displaying'!
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displayOn:aGC x:x y:y
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"display the receiver on a GC"
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self displayOn:aGC x:x y:y opaque:false
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"Modified: 12.5.1996 / 11:14:57 / cg"
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!
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displayOn:aGC x:x y:y from:start to:stop
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"display the receiver on a GC"
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"q&d hack"
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(self copyFrom:start to:stop) displayOn:aGC x:x y:y opaque:false
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"Modified: 12.5.1996 / 12:49:33 / cg"
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304
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!
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307
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displayOn:aGC x:x0 y:y opaque:opaque
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"display the receiver on a GC"
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|savedFont font color boldFont italicFont savedPaint
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bold italic underline strikeout pos x l|
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savedFont := aGC basicFont.
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savedPaint := aGC paint.
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pos := 1.
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x := x0.
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runs runsDo:[:len :emphasis |
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color := nil.
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bold := italic := underline := strikeout := false.
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emphasis isSymbol ifTrue:[
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emphasis == #bold ifTrue:[bold := true]
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ifFalse:[emphasis == #italic ifTrue:[italic := true]
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ifFalse:[emphasis == #underline ifTrue:[underline := true]
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ifFalse:[emphasis == #strikeout ifTrue:[strikeout := true]
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]]]
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] ifFalse:[
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(emphasis isMemberOf:Association) ifTrue:[
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emphasis key == #color ifTrue:[
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color := emphasis value
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]
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] ifFalse:[
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emphasis notNil ifTrue:[
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emphasis do:[:entry |
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entry == #bold ifTrue:[bold := true]
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ifFalse:[entry == #italic ifTrue:[italic := true]
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ifFalse:[entry == #underline ifTrue:[underline := true]
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ifFalse:[entry == #strikeout ifTrue:[strikeout := true]
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ifFalse:[
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(entry isMemberOf:Association) ifTrue:[
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entry key == #color ifTrue:[
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color := entry value
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]
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]]]]]
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]
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]
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]
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].
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color isNil ifTrue:[
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color := savedPaint.
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] ifFalse:[
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color := color on:aGC device.
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].
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304
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307
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bold ifTrue:[
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boldFont isNil ifTrue:[
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boldFont := savedFont asBold on:aGC device
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].
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font := boldFont.
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] ifFalse:[
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italic ifTrue:[
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italicFont isNil ifTrue:[
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italicFont := savedFont asItalic on:aGC device
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].
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font := italicFont.
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] ifFalse:[
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font := savedFont
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]
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].
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aGC basicFont:font.
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aGC paint:color.
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opaque ifTrue:[
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aGC displayOpaqueString:string from:pos to:(pos + len - 1) x:x y:y.
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] ifFalse:[
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aGC displayString:string from:pos to:(pos + len - 1) x:x y:y.
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].
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l := aGC font widthOf:string from:pos to:(pos + len - 1).
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underline ifTrue:[
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aGC displayLineFromX:x y:y toX:x+l-1 y:y
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].
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x := x + l.
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pos := pos + len
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].
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307
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aGC basicFont:savedFont.
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aGC paint:savedPaint.
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"Created: 12.5.1996 / 11:14:30 / cg"
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"Modified: 12.5.1996 / 11:55:06 / cg"
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!
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displayOpaqueOn:aGC x:x y:y
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"display the receiver on a GC"
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self displayOn:aGC x:x y:y opaque:true
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304
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307
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"Modified: 12.5.1996 / 11:14:52 / cg"
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!
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displayOpaqueOn:aGC x:x y:y from:start to:stop
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"display the receiver on a GC"
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"q&d hack"
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263 |
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(self copyFrom:start to:stop) displayOn:aGC x:x y:y opaque:true
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265 |
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"Created: 12.5.1996 / 12:29:37 / cg"
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"Modified: 12.5.1996 / 12:49:19 / cg"
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304
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! !
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!Text methodsFor:'emphasis'!
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allBold
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"make all characters bold"
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runs := RunArray new:(string size) withAll:#bold
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"
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(Text string:'hello') allBold
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"
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"Modified: 11.5.1996 / 14:22:12 / cg"
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!
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283 |
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emphasisAt:characterIndex
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"return the emphasis at some index"
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^ runs at:characterIndex
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288 |
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"
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(Text string:'hello') allBold emphasisAt:2
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"
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"Modified: 11.5.1996 / 14:22:31 / cg"
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!
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307
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emphasisAt:characterIndex put:emphasis
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"change the emphasis at some index. return the receiver"
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runs at:characterIndex put:emphasis
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300 |
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"
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(Text string:'hello') allBold emphasisAt:2 put:#italic
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"
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304 |
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"Modified: 12.5.1996 / 12:40:31 / cg"
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!
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304
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emphasizeAllWith:emphasis
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"change the emphasis of all characters"
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runs := RunArray new:(string size) withAll:emphasis
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312 |
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"
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(Text string:'hello') allBold emphasizeAllWith:#italic
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315 |
"
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316 |
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"Modified: 11.5.1996 / 14:22:52 / cg"
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318 |
!
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319 |
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emphasizeFrom:start to:stop with:emphasis
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"change the emphasis of a range of characters"
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|newRuns|
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newRuns := RunArray new.
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326 |
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"/ for now - a q&d hack
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1 to:start-1 do:[:i |
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newRuns add:(runs at:i).
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].
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newRuns add:emphasis withOccurrences:(stop - start + 1).
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stop+1 to:string size do:[:i |
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newRuns add:(runs at:i)
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].
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runs := newRuns
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336 |
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337 |
"
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338 |
(Text string:'hello world')
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emphasizeFrom:1 to:5 with:#bold;
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340 |
emphasizeFrom:7 to:11 with:#italic
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341 |
"
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342 |
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343 |
"Modified: 11.5.1996 / 14:30:02 / cg"
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344 |
! !
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345 |
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346 |
!Text methodsFor:'printing & storing'!
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347 |
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348 |
displayString
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349 |
^ self storeString
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350 |
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351 |
"Created: 11.5.1996 / 14:24:48 / cg"
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352 |
!
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353 |
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354 |
printOn:aStream
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355 |
string printOn:aStream
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356 |
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357 |
"Created: 11.5.1996 / 14:27:25 / cg"
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358 |
!
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359 |
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360 |
storeOn:aStream
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361 |
aStream nextPutAll:'(Text string:'.
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362 |
string storeOn:aStream.
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307
|
363 |
aStream nextPutAll:' runs:'.
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304
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364 |
runs storeOn:aStream.
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365 |
aStream nextPutAll:')'.
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366 |
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|
367 |
"Created: 11.5.1996 / 14:27:09 / cg"
|
|
307
|
368 |
"Modified: 12.5.1996 / 12:45:16 / cg"
|
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304
|
369 |
! !
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370 |
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371 |
!Text methodsFor:'private accessing'!
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372 |
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373 |
string:aString emphasis:emphasis
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374 |
string := aString.
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375 |
runs := RunArray new:string size withAll:emphasis
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376 |
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377 |
"
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378 |
|t|
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379 |
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|
380 |
t := Text new string:'hello' emphasis:#bold.
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|
381 |
t emphasisAt:2.
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382 |
"
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383 |
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|
384 |
"Modified: 11.5.1996 / 14:19:38 / cg"
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|
385 |
! !
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386 |
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387 |
!Text methodsFor:'queries'!
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388 |
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307
|
389 |
bitsPerCharacter
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|
390 |
^ string bitsPerCharacter
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|
304
|
391 |
|
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307
|
392 |
"Created: 12.5.1996 / 15:44:04 / cg"
|
|
304
|
393 |
!
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394 |
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395 |
hasChangeOfEmphasis
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396 |
^ runs notNil
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397 |
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398 |
"Created: 11.5.1996 / 14:03:19 / cg"
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|
399 |
!
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400 |
|
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307
|
401 |
heightOn:aGC
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402 |
"return the number of device units, required on aGC's device"
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|
403 |
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|
404 |
^ aGC font heightOf:string
|
|
|
405 |
|
|
|
406 |
"Created: 12.5.1996 / 11:02:03 / cg"
|
|
|
407 |
!
|
|
|
408 |
|
|
304
|
409 |
indexOf:aCharacter startingAt:index
|
|
|
410 |
^ string indexOf:aCharacter startingAt:index
|
|
|
411 |
|
|
|
412 |
"Created: 11.5.1996 / 13:58:56 / cg"
|
|
|
413 |
!
|
|
|
414 |
|
|
307
|
415 |
isText
|
|
|
416 |
^ true
|
|
|
417 |
|
|
|
418 |
"Created: 12.5.1996 / 10:56:24 / cg"
|
|
|
419 |
!
|
|
|
420 |
|
|
304
|
421 |
occurrencesOf:aCharacter
|
|
|
422 |
^ string occurrencesOf:aCharacter
|
|
|
423 |
|
|
|
424 |
"Created: 11.5.1996 / 13:58:46 / cg"
|
|
|
425 |
!
|
|
|
426 |
|
|
|
427 |
size
|
|
|
428 |
^ string size
|
|
|
429 |
|
|
|
430 |
"Created: 11.5.1996 / 14:25:15 / cg"
|
|
|
431 |
!
|
|
|
432 |
|
|
|
433 |
string
|
|
|
434 |
^ string
|
|
|
435 |
|
|
|
436 |
"Created: 11.5.1996 / 13:58:38 / cg"
|
|
307
|
437 |
!
|
|
|
438 |
|
|
|
439 |
widthOn:aGC
|
|
|
440 |
"return the number of device units, required on aGC's device"
|
|
|
441 |
|
|
|
442 |
|savedFont savedPaint boldFont italicFont bold italic pos f l|
|
|
|
443 |
|
|
|
444 |
savedFont := aGC basicFont on:aGC device.
|
|
|
445 |
|
|
|
446 |
pos := 1.
|
|
|
447 |
l := 0.
|
|
|
448 |
runs runsDo:[:len :emphasis |
|
|
|
449 |
emphasis isSymbol ifTrue:[
|
|
|
450 |
bold := emphasis == #bold.
|
|
|
451 |
italic := emphasis == #italic.
|
|
|
452 |
] ifFalse:[
|
|
|
453 |
emphasis isNil ifTrue:[
|
|
|
454 |
bold := italic := false
|
|
|
455 |
] ifFalse:[
|
|
|
456 |
bold := emphasis includesIdentical:#bold.
|
|
|
457 |
italic := emphasis includesIdentical:#italic.
|
|
|
458 |
]
|
|
|
459 |
].
|
|
|
460 |
|
|
|
461 |
bold ifTrue:[
|
|
|
462 |
boldFont isNil ifTrue:[
|
|
|
463 |
boldFont := savedFont asBold on:aGC device
|
|
|
464 |
].
|
|
|
465 |
f := boldFont.
|
|
|
466 |
] ifFalse:[
|
|
|
467 |
italic ifTrue:[
|
|
|
468 |
italicFont isNil ifTrue:[
|
|
|
469 |
italicFont := savedFont asItalic on:aGC device
|
|
|
470 |
].
|
|
|
471 |
f := italicFont
|
|
|
472 |
] ifFalse:[
|
|
|
473 |
f := savedFont
|
|
|
474 |
]
|
|
|
475 |
].
|
|
|
476 |
l := l + (f widthOf:string from:pos to:(pos + len - 1)).
|
|
|
477 |
pos := pos + len
|
|
|
478 |
].
|
|
|
479 |
|
|
|
480 |
^ l
|
|
|
481 |
|
|
|
482 |
"Modified: 12.5.1996 / 11:21:09 / cg"
|
|
|
483 |
! !
|
|
|
484 |
|
|
|
485 |
!Text methodsFor:'replacing'!
|
|
|
486 |
|
|
|
487 |
replaceFrom:start to:stop with:aCollection startingAt:startIndex
|
|
|
488 |
|idx|
|
|
|
489 |
|
|
|
490 |
aCollection isString ifTrue:[
|
|
|
491 |
aCollection hasChangeOfEmphasis ifTrue:[
|
|
|
492 |
string replaceFrom:start to:stop with:aCollection startingAt:startIndex.
|
|
|
493 |
idx := startIndex.
|
|
|
494 |
start to:stop do:[:col |
|
|
|
495 |
self emphasisAt:col put:(aCollection emphasisAt:idx).
|
|
|
496 |
idx := idx + 1.
|
|
|
497 |
].
|
|
|
498 |
^ self.
|
|
|
499 |
]
|
|
|
500 |
].
|
|
|
501 |
|
|
|
502 |
string replaceFrom:start to:stop with:aCollection startingAt:startIndex.
|
|
|
503 |
self emphasizeFrom:start to:stop with:nil
|
|
|
504 |
|
|
|
505 |
"
|
|
|
506 |
((Text string:'hello') allBold emphasisAt:2 put:#italic)
|
|
|
507 |
copyFrom:1 to:3
|
|
|
508 |
"
|
|
|
509 |
|
|
|
510 |
"Modified: 12.5.1996 / 12:44:53 / cg"
|
|
304
|
511 |
! !
|
|
|
512 |
|
|
|
513 |
!Text class methodsFor:'documentation'!
|
|
|
514 |
|
|
|
515 |
version
|
|
307
|
516 |
^ '$Header: /cvs/stx/stx/libbasic2/Text.st,v 1.2 1996-05-12 14:01:23 cg Exp $'
|
|
304
|
517 |
! !
|