author | tz |
Mon, 30 Mar 1998 14:10:59 +0200 | |
changeset 876 | 585929b1fec2 |
parent 781 | a21f55716b47 |
child 988 | daebc00918d4 |
permissions | -rw-r--r-- |
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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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Object subclass:#Icon |
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instanceVariableNames:'image mask' |
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classVariableNames:'KnownIcons' |
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poolDictionaries:'' |
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category:'Graphics-Images' |
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! |
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!Icon 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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documentation |
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" |
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The Icon class keeps track of already loaded Images and caches |
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them for later reuse. |
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Icons are accessed by a symbolic name, so there is no need to |
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remember their names (they must have been registered under that name |
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before - of course). |
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Icon was mostly added for ST-80 Compatibility: |
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Images are returned via the #constantNamed: message which is used by |
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some ST-80 PD classes and returns corresponding ST/X icons. |
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Notice, that ST/X does not provide Icon instances - Icon only consists |
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of class mimicri protocol, to make your life easier. |
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If you like the original ST-80 icons, install the image files in the `bitmap' |
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directory under a name foo.xbm, where `foo' corresponds to the icons |
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name symbol |
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(i.e. for the `Icon constantNamed:#foo', a 'foo.xbm' file is required). |
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You can grab those icons from manchester or from the PrimeTime Freeware |
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(PTF) CD. A copy of those bitmaps (from the PTF-CD) is found in |
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'goodies/bitmaps/st80bitmaps'. |
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CAVEAT: |
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masks are not yet implemented |
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[See also:] |
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Image Form ImageReader |
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[author:] |
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Claus Gittinger |
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! ! |
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!Icon class methodsFor:'initialization'! |
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initialize |
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KnownIcons isNil ifTrue:[ |
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KnownIcons := Dictionary new |
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] |
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" |
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Icon initialize |
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"Modified: 20.5.1996 / 09:24:10 / cg" |
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! |
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replacementNameFor:aName |
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"return a replacement ST/X name for an ST80 icon name." |
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self replacementNames do:[:aPair | |
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(aPair at:1) == aName ifTrue:[^ aPair at:2]. |
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]. |
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^ nil |
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! |
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replacementNames |
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"return an ST-80 constant name to ST/X file name translation. |
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This was added for ST-80 compatibility, to support code which uses |
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things like 'Icon constantNamed:#categoryBrowser'." |
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^ #( |
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#(file FBrowser) |
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#(debugger Debugger) |
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#(systembrowser SBrowser) |
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#(classbrowser SBrowser) |
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#(categoryBrowser SBrowser) |
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#(hierarchyBrowser SBrowser) |
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#(methodBrowser SBrowser) |
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#(launcher SmalltalkX) |
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#(workspace SmalltalkX) |
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#(transcript SmalltalkX) |
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#(inspector Inspector) |
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#(default SmalltalkX) |
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) |
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Icon constantNamed:#categoryBrowser |
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Icon constantNamed:#default |
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"Modified: 13.5.1996 / 10:29:43 / cg" |
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! ! |
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!Icon class methodsFor:'accessing'! |
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constantNamed:aName |
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"return the image registered under aName." |
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|icon nm| |
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icon := KnownIcons at:aName ifAbsent:[]. |
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icon isNil ifTrue:[ |
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nm := self replacementNameFor:aName. |
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nm notNil ifTrue:[ |
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icon := Image fromFile:('bitmaps/' , nm). |
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icon isNil ifTrue:[ |
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icon := Image fromFile:('bitmaps/' , nm , '.xbm'). |
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] |
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]. |
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icon isNil ifTrue:[ |
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icon := Image fromFile:('bitmaps/' , aName). |
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icon isNil ifTrue:[ |
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icon := Image fromFile:('bitmaps/' , aName , '.xbm'). |
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]. |
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icon isNil ifTrue:[ |
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^ nil |
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]. |
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icon := icon on:Screen default. |
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]. |
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KnownIcons at:aName put:icon. |
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^ icon |
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Icon constantNamed:#file |
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Icon constantNamed:#debugger |
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Icon constantNamed:#systembrowser |
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Icon constantNamed:#SBrowser |
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Icon constantNamed:#SBrowser |
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"Modified: 10.1.1997 / 17:52:06 / cg" |
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! |
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constantNamed:aName ifAbsentPut: aBlock |
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"if an image for aName is registered, return it; |
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otherwise, register the result from evaluating aBlock |
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(which also could be a value holder) and return it." |
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|image| |
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(image := self constantNamed: aName) isNil |
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ifTrue: |
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[ |
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self constantNamed: aName put: (image := aBlock value) |
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]. |
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^image |
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! |
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constantNamed:aName put:anImage |
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"register anImage under aName." |
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KnownIcons at:aName put:anImage |
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"Modified: 23.4.1996 / 11:40:51 / cg" |
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! ! |
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!Icon class methodsFor:'startup / release'! |
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preSnapshot |
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KnownIcons removeAll |
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! ! |
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!Icon class methodsFor:'documentation'! |
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version |
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^ '$Header: /cvs/stx/stx/libview2/Icon.st,v 1.17 1998-01-27 17:04:27 tz Exp $' |
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! ! |
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Icon initialize! |