"
COPYRIGHT (c) 1995 by Claus Gittinger
All Rights Reserved
This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice. This software may not
be provided or otherwise made available to, or used by, any
other person. No title to or ownership of the software is
hereby transferred.
"
Object subclass:#Icon
instanceVariableNames:'image mask'
classVariableNames:'KnownIcons'
poolDictionaries:''
category:'Graphics-Images'
!
!Icon class methodsFor:'documentation'!
copyright
"
COPYRIGHT (c) 1995 by Claus Gittinger
All Rights Reserved
This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice. This software may not
be provided or otherwise made available to, or used by, any
other person. No title to or ownership of the software is
hereby transferred.
"
!
documentation
"
The Icon class keeps track of already loaded Images and caches
them for later reuse.
Icons are accessed by a symbolic name, so there is no need to
remember their names (they must have been registered under that name
before - of course).
Icon was mostly added for ST-80 Compatibility:
Images are returned via the #constantNamed: message which is used by
some ST-80 PD classes and returns corresponding ST/X icons.
Notice, that ST/X does not provide Icon instances - Icon only consists
of class mimicri protocol, to make your life easier.
If you like the original ST-80 icons, install the image files in the `bitmap'
directory under a name foo.xbm, where `foo' corresponds to the icons
name symbol
(i.e. for the `Icon constantNamed:#foo', a 'foo.xbm' file is required).
You can grab those icons from manchester or from the PrimeTime Freeware
(PTF) CD. A copy of those bitmaps (from the PTF-CD) is found in
'goodies/bitmaps/st80bitmaps'.
CAVEAT:
masks are not yet implemented
[See also:]
Image Form ImageReader
[author:]
Claus Gittinger
"
! !
!Icon class methodsFor:'initialization'!
initialize
KnownIcons isNil ifTrue:[
KnownIcons := Dictionary new
]
"
Icon initialize
"
"Modified: 20.5.1996 / 09:24:10 / cg"
!
replacementNameFor:aName
"return a replacement ST/X name for an ST80 icon name."
self replacementNames do:[:aPair |
(aPair at:1) == aName ifTrue:[^ aPair at:2].
].
^ nil
!
replacementNames
"return an ST-80 constant name to ST/X file name translation.
This was added for ST-80 compatibility, to support code which uses
things like 'Icon constantNamed:#categoryBrowser'."
^ #(
#(file FBrowser)
#(debugger Debugger)
#(systembrowser SBrowser)
#(classbrowser SBrowser)
#(categoryBrowser SBrowser)
#(hierarchyBrowser SBrowser)
#(methodBrowser SBrowser)
#(launcher SmalltalkX)
#(workspace SmalltalkX)
#(transcript SmalltalkX)
#(inspector Inspector)
#(default SmalltalkX)
)
"
Icon constantNamed:#categoryBrowser
Icon constantNamed:#default
"
"Modified: 13.5.1996 / 10:29:43 / cg"
! !
!Icon class methodsFor:'accessing'!
constantNamed:aName
"return the image registered under aName."
|icon nm|
icon := KnownIcons at:aName ifAbsent:[].
icon isNil ifTrue:[
nm := self replacementNameFor:aName.
nm notNil ifTrue:[
icon := Image fromFile:('bitmaps/' , nm).
icon isNil ifTrue:[
icon := Image fromFile:('bitmaps/' , nm , '.xbm').
]
].
icon isNil ifTrue:[
icon := Image fromFile:('bitmaps/' , aName).
icon isNil ifTrue:[
icon := Image fromFile:('bitmaps/' , aName , '.xbm').
].
icon isNil ifTrue:[
('Icon [info]: no icon named ' , aName) infoPrintCR.
^ nil
].
icon := icon on:Screen default.
].
KnownIcons at:aName put:icon.
].
^ icon
"
Icon constantNamed:#file
Icon constantNamed:#debugger
Icon constantNamed:#systembrowser
Icon constantNamed:#SBrowser
Icon constantNamed:#SBrowser
"
"Modified: 10.1.1997 / 17:52:06 / cg"
!
constantNamed:aName put:anImage
"register anImage under aName."
KnownIcons at:aName put:anImage
"Modified: 23.4.1996 / 11:40:51 / cg"
! !
!Icon class methodsFor:'documentation'!
version
^ '$Header: /cvs/stx/stx/libview2/Icon.st,v 1.14 1997-01-10 17:59:45 cg Exp $'
! !
Icon initialize!