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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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View subclass:#ShadowView
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instanceVariableNames:'myView shadowLength shadow imageUnderShadow'
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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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ShadowView comment:'
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COPYRIGHT (c) 1991-93 by Claus Gittinger
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All Rights Reserved
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just to give PopUps and ModalBoxes a shadow. A ShadowView just paints black.
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The instance variable myView is the view, the shadow is for.
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$Header: /cvs/stx/stx/libview/ShadowView.st,v 1.3 1993-10-13 00:46:27 claus Exp $
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written nov 91 by claus.
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real shadow added jun-93 by claus (if shadowColor is nil)
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'!
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!ShadowView methodsFor:'initialization'!
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initialize
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super initialize.
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borderWidth := 0.
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shadow := Black.
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"the length of the shadow from myView"
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shadowLength := (device pixelPerMillimeter * 1.0) rounded
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!
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realize
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"realize the shadowView some distance away from myView"
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2
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|root shW shH right bot kludge|
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0
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myView notNil ifTrue:[
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self origin:(myView origin + (myView borderWidth * 2) + shadowLength) extent:(myView extent).
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imageUnderShadow := Form width:width height:height depth:device depth on:device.
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imageUnderShadow initGC.
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device setClipByChildren:false in:imageUnderShadow gcId.
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shW := shadowLength x.
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shH := shadowLength y.
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2
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right := width - shW.
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bot := height - shH.
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0
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root := DisplayRootView new.
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2
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kludge := root device depth == 1.
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(kludge and:[root device blackpixel == 0]) ifTrue:[
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imageUnderShadow foreground:(Color colorId:0)
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background:(Color colorId:1).
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].
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0
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imageUnderShadow copyFrom:root x:(self origin x + right) y:(self origin y)
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toX:right y:0 width:shW height:height.
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imageUnderShadow copyFrom:root x:(self origin x) y:(self origin y + bot)
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toX:0 y:bot width:width height:shH.
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"grey out image in area"
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2
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(kludge and:[root device blackpixel == 0]) ifFalse:[
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imageUnderShadow foreground:(Color colorId:0) background:(Color colorId:-1).
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imageUnderShadow mask:(Form mediumGreyFormOn:device).
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imageUnderShadow function:#and.
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imageUnderShadow fillRectangleX:0 y:0 width:width height:height.
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0
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2
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(Color black on:device) colorId == 0 ifFalse:[
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imageUnderShadow foreground:(Color black on:device) background:(Color colorId:0).
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imageUnderShadow function:#or.
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imageUnderShadow fillRectangleX:0 y:0 width:width height:height.
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]
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] ifTrue:[
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imageUnderShadow foreground:(Color colorId:1) background:(Color colorId:0).
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imageUnderShadow mask:(Form mediumGreyFormOn:device).
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imageUnderShadow function:#or.
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imageUnderShadow fillRectangleX:0 y:0 width:width height:height.
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].
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0
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super realize.
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self raise
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]
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!
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unrealize
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"realize the shadowView some distance away from myView"
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imageUnderShadow := nil.
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super unrealize.
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!
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create
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super create.
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self backingStore:false.
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2
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"X11/NeWS server is broken here ..."
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(device serverVendor startsWith:'X11/NeWS') ifFalse:[
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self saveUnder:true
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]
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0
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! !
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!ShadowView methodsFor:'events'!
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redraw
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"fill all of myself with black"
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2
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imageUnderShadow isNil ifTrue:[^ self].
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0
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"
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self foreground:(Color colorId:-1) background:(Color colorId:0).
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self function:#copy.
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"
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self copyFrom:imageUnderShadow x:(width - shadowLength x) y:0
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toX:(width - shadowLength x) y:0 width:shadowLength x height:height.
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self copyFrom:imageUnderShadow x:0 y:(height - shadowLength y)
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toX:0 y:(height - shadowLength y) width:width height:shadowLength y.
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"
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self paint:shadow.
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self fillRectangleX:0 y:0 width:width height:height
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"
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! !
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!ShadowView methodsFor:'accessing'!
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shadowColor:aColor
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"to set the shadow color"
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shadow := aColor
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!
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for:aView
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"set the view I am for"
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myView := aView
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!
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createOnTop
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^ true
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! !
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