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"
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COPYRIGHT (c) 1993 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:#ImageView
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instanceVariableNames:'image'
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classVariableNames:''
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poolDictionaries:''
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category:'Views-Misc'
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!
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ImageView comment:'
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COPYRIGHT (c) 1993 by Claus Gittinger
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All Rights Reserved
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$Header: /cvs/stx/stx/libwidg2/ImageView.st,v 1.1 1993-10-13 01:02:30 claus Exp $
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'!
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!ImageView class methodsFor:'startup'!
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startOn:aFileName
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"startup an image viewer"
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|top v imageView|
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top := StandardSystemView label:aFileName.
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v := HVScrollableView for:self in:top.
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v origin:0@0 extent:1.0@1.0.
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imageView := v scrolledView.
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imageView image:(Image fromFile:aFileName).
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top realize
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"ImageView startOn:'bitmaps/garfield.gif'"
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! !
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!ImageView class methodsFor:'documentation'!
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documentation
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"
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This View knows how to display an image (or form).
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You can display an image with:
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(ImageView new image:anImage) realize
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i.e.
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(ImageView new image:(Image fromFile:''bitmaps/garfield.gif'')) realize
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(ImageView new image:(Image fromFile:''bitmaps/dano.tiff'')) realize
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(ImageView new image:(Form fromFile:''SBrowser.xbm'')) realize
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or simply by:
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ImageView startOn:''bitmaps/garfield.gif''
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"
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! !
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!ImageView methodsFor:'release'!
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destroy
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image := nil.
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super destroy.
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! !
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!ImageView methodsFor:'drawing'!
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redraw
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image notNil ifTrue:[
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image := image on:device.
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self clear.
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self foreground:Black background:White.
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self function:#copy.
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self drawOpaqueForm:image x:(0 - viewOrigin x) y:(0 - viewOrigin y)
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]
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! !
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!ImageView methodsFor:'accessing'!
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image:anImage
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"set the image - show a wait cursor, since image dithering may take a while"
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self cursor:Cursor wait.
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image := anImage.
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shown ifTrue:[
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self redraw
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].
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self contentsChanged.
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self cursor:(Cursor normal).
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"ImageView new realize image:(Image fromFile:'bitmaps/claus.gif')"
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!
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image
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"return the image"
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^ image
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! !
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!ImageView methodsFor:'queries'!
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widthOfContents
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"return the images width - scrollbar needs this info"
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image isNil ifTrue:[^ 0].
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^ image width
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!
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heightOfContents
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"return the images height - scrollbar needs this info"
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image isNil ifTrue:[^ 0].
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^ image height
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! !
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