LabelAndTwoIcons.st
author Claus Gittinger <cg@exept.de>
Fri, 15 Jun 2018 10:54:35 +0200
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#DOCUMENTATION by cg class: ComboListView class comment/format in: #documentation
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"
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 COPYRIGHT (c) 2009 by eXept Software AG
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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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"{ Package: 'stx:libwidg2' }"
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"{ NameSpace: Smalltalk }"
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LabelAndIcon subclass:#LabelAndTwoIcons
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	instanceVariableNames:'image2'
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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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!LabelAndTwoIcons class methodsFor:'documentation'!
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copyright
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"
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 COPYRIGHT (c) 2009 by eXept Software AG
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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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    like a LabelAndIcon, but adds another image to the right of the string.
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    Notice:
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        This is different from ST-80's LabelAndIcon class, which
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        inherits from Label. Therefore, things may change in the future.
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    [author:]
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        Claus Gittinger
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    [see also:]
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        ListEntry Text String Icon
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        ListView SelectionInListView
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"
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!
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examples
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"
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  in a button/label:
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                                                                        [exBegin]
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    |top l image|
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    image := Image fromFile:'../../goodies/bitmaps/xpmBitmaps/countries/brazil.xpm'.
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    l := (LabelAndTwoIcons icon:image string:'brazil').
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    l image2:image.
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    top := Button label:l.
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    top open.
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                                                                        [exEnd]
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  two images in a button/label:
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                                                                        [exBegin]
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    |top l image1 image2|
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    image1 := Image fromFile:'../../goodies/bitmaps/xpmBitmaps/countries/brazil.xpm'.
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    image2 := Image fromFile:'../../goodies/bitmaps/xpmBitmaps/countries/germany.xpm'.
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    l := (LabelAndIcon form:image1 image:image2 string:'directory').
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    top := Button label:l.
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    top open.
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                                                                        [exEnd]
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"
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! !
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!LabelAndTwoIcons methodsFor:'accessing'!
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image2
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    "return my second image (right of string)"
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    ^ image2
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!
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image2:anImage
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    "set the image2 (right of string)"
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    image2 := anImage
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! !
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!LabelAndTwoIcons methodsFor:'displaying'!
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displayOn:aGC x:x y:y opaque:opaque
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    "display the receiver on a GC"
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    |y1 x1 image2Value image2Height maxHeight asc|
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    super displayOn:aGC x:x y:y opaque:opaque.
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    image2Value := image2 value.
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    image2Value notNil ifTrue:[
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        asc  := aGC deviceFont ascent.
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        image2Height  := image2Value notNil ifTrue:[image2Value height]  ifFalse:[0].
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        maxHeight := self heightOn:aGC.
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        x1 := x  + gap + (super widthOn:aGC).
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        image2Value notNil ifTrue:[
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            y1 := y - asc + (maxHeight - image2Height + 1 // 2).
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            image2 := image2Value onDevice:aGC device.
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            (opaque and:[image2Value mask isNil]) ifTrue:[aGC displayOpaqueForm:image2Value x:x1 y:y1]
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                                                 ifFalse:[aGC displayForm:image2Value x:x1 y:y1].
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        ].
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    ]
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! !
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!LabelAndTwoIcons methodsFor:'queries'!
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heightOn:aGC
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    "return the height of the receiver, if it is to be displayed on aGC"
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    |image2Height oneMillimeter|
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    image2 notNil ifTrue:[
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        oneMillimeter := aGC device isNil ifTrue:[2] ifFalse:[aGC verticalIntegerPixelPerMillimeter].
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        image2Height := image2 value height + oneMillimeter
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    ] ifFalse:[
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        image2Height := 0   
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    ].
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    ^ (super heightOn:aGC) max: image2Height
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!
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widthOn:aGC
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    "return the width of the receiver, if it is to be displayed on aGC"
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    |width|
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    width := super widthOn:aGC.
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    image2 notNil ifTrue:[
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        width := width + gap + image2 value width
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    ].
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    ^ width
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! !
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!LabelAndTwoIcons class methodsFor:'documentation'!
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version_CVS
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    ^ '$Header$'
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! !
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