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"
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COPYRIGHT (c) 1993 by Claus Gittinger
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28
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All Rights Reserved
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0
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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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ImageReader subclass:#WindowsIconReader
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28
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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32
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category:'Graphics-Images support'
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0
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!
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21
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!WindowsIconReader class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 1993 by Claus Gittinger
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28
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All Rights Reserved
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0
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26 |
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21
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27 |
This software is furnished under a license and may be used
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28 |
only in accordance with the terms of that license and with the
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29 |
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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0
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21
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version
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"
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103
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$Header: /cvs/stx/stx/libview2/WindowsIconReader.st,v 1.17 1995-09-17 22:52:44 claus Exp $
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21
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"
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!
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documentation
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"
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32
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this class provides methods for loading Windows and OS2 icon files.
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Image writing is not supported.
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21
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"
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! !
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0
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28
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!WindowsIconReader class methodsFor:'initialization'!
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initialize
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Image fileFormats at:'.bmp' put:self.
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Image fileFormats at:'.ico' put:self.
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! !
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102
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!WindowsIconReader class methodsFor:'testing'!
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isValidImageFile:aFileName
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"return true, if aFileName contains a valid windows bitmap-file image"
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|inStream header ok|
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inStream := self streamReadingFile:aFileName.
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inStream isNil ifTrue:[^ false].
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inStream binary.
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inStream size < 16 ifTrue:[
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^ false
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].
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header := ByteArray uninitializedNew:4.
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inStream nextBytes:4 into:header.
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ok := false.
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(header startsWith:#(66 77)) ifTrue:[ "BM"
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ok := true.
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"/ 'WINREADER: Win3.x or OS/2 vsn 2 BM format' infoPrintNL.
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].
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(header startsWith:#(66 65)) ifTrue:[ "BA"
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ok := true.
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"/ 'WINREADER: OS/2 vsn 2 BA format' infoPrintNL.
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].
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(header startsWith:#(73 67)) ifTrue:[ "IC"
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ok := true.
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"/ 'WINREADER: OS/2 IC format' infoPrintNL.
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].
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(header startsWith:#(80 84)) ifTrue:[ "PT"
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ok := true.
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"/ 'WINREADER: OS/2 PT format' infoPrintNL.
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].
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(header startsWith:#(0 0 1 0)) ifTrue:[
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ok := true.
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"/ 'WINREADER: Win3.x ICO format' infoPrintNL.
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].
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ok ifFalse:[^ false].
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^ true
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"
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WindowsIconReader isValidImageFile:'/phys/clam2/LocalLibrary/Images/OS2_icons/dos.ico'
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"
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"Created: 17.9.1995 / 17:14:20 / claus"
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! !
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103
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!WindowsIconReader methodsFor:'private'!
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loadBMPWidth:w height:h depth:d compression:c from:aStream into:data
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d == 8 ifTrue:[
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(self class loadBMP8Width:w height:h compression:c from:aStream into:data) ifFalse:[
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'BMP: read/decompression failed' errorPrintNL.
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^ false
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]
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] ifFalse:[
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d == 4 ifTrue:[
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(self class loadBMP4to8Width:w height:h compression:c from:aStream into:data) ifFalse:[
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'BMP: read/decompression failed' errorPrintNL.
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^ false
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]
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] ifFalse:[
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d == 2 ifTrue:[
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(self class loadBMP2to8Width:w height:h from:aStream into:data) ifFalse:[
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'BMP: read failed' errorPrintNL.
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^ false
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]
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] ifFalse:[
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d == 1 ifTrue:[
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(self class loadBMP1to8Width:w height:h from:aStream into:data) ifFalse:[
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'BMP: read failed' errorPrintNL.
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^ false
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]
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] ifFalse:[
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'BMP: unsupported depth:' errorPrint. d errorPrintNL.
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^ false
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]
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]
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]
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].
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^ true
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139 |
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"Created: 17.9.1995 / 18:48:11 / claus"
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! !
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142 |
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53
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143 |
!WindowsIconReader methodsFor:'reading from file'!
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0
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144 |
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21
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fromOS2File: aFilename
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41
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|reader stream|
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147 |
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stream := self streamReadingFile:aFilename.
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stream isNil ifTrue:[^ nil].
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83
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reader := (self new) fromOS2Stream:stream.
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41
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stream close.
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reader notNil ifTrue:[^ reader image].
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^ nil
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21
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!
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0
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155 |
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21
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fromWindowsBMPFile: aFilename
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41
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|reader stream|
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158 |
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stream := self class streamReadingFile:aFilename.
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stream isNil ifTrue:[^ nil].
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83
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reader := (self new) fromWindowsBMPStream:stream.
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41
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stream close.
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reader notNil ifTrue:[^ reader image].
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^ nil
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21
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!
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166 |
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fromWindowsICOFile: aFilename
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41
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|reader stream|
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169 |
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stream := self class streamReadingFile:aFilename.
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stream isNil ifTrue:[^ nil].
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83
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reader := (self new) fromWindowsICOStream:stream.
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41
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stream close.
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reader notNil ifTrue:[^ reader image].
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^ nil
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21
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176 |
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177 |
"
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Image fromFile:'/phys/clam2//LocalLibrary/Images/WIN_icons/ibm.ico'.
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"
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!
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181 |
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41
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182 |
fromWindowsICOStream:aStream
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21
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183 |
| header inDepth
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rawMap rMap gMap bMap srcIndex dstIndex
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185 |
data4 mask tmp bytesPerRow nColor|
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0
|
186 |
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41
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inStream := aStream.
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aStream binary.
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0
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189 |
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"read the header"
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191 |
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21
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header := ByteArray uninitializedNew:(6 + 16 + 40).
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41
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aStream nextBytes:(6 + 16 + 40) into:header.
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21
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width := header at:(6+1).
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height := header at:(7+1).
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nColor := header at:(8+1).
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"10, 11, 12, 13, 14 ? (reserve)"
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198 |
"15, 16, 17, 18 pixel array size"
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199 |
"19, 20, 21, 22 offset "
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200 |
"23, ... , 62 ?"
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201 |
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0
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202 |
inDepth := header at:16r25.
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203 |
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204 |
"read the colormap"
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205 |
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21
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rawMap := ByteArray uninitializedNew:(16*4).
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41
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207 |
aStream nextBytes:(16*4) into:rawMap.
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0
|
208 |
rMap := Array new:16.
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209 |
gMap := Array new:16.
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|
210 |
bMap := Array new:16.
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|
211 |
srcIndex := 1.
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212 |
1 to:16 do:[:i |
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28
|
213 |
bMap at:i put:(rawMap at:srcIndex).
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|
214 |
srcIndex := srcIndex + 1.
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|
215 |
gMap at:i put:(rawMap at:srcIndex).
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|
216 |
srcIndex := srcIndex + 1.
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|
217 |
rMap at:i put:(rawMap at:srcIndex).
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|
218 |
srcIndex := srcIndex + 1.
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|
219 |
srcIndex := srcIndex + 1.
|
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0
|
220 |
].
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221 |
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222 |
"read the data bits"
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223 |
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3
|
224 |
bytesPerRow := width * inDepth + 7 // 8.
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|
225 |
data4 := ByteArray uninitializedNew:(height * bytesPerRow).
|
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41
|
226 |
aStream nextBytes:(height * bytesPerRow) into:data4.
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0
|
227 |
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228 |
"read mask"
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229 |
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|
230 |
"
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231 |
mask := ByteArray new:(width * height / 8).
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41
|
232 |
aStream nextBytes:(width * height / 8) into:mask.
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0
|
233 |
"
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234 |
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235 |
"stupid: last row first"
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236 |
|
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3
|
237 |
tmp := ByteArray uninitializedNew:(height * bytesPerRow).
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0
|
238 |
srcIndex := 1.
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|
239 |
dstIndex := (height - 1) * bytesPerRow + 1.
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|
240 |
1 to:height do:[:row |
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28
|
241 |
tmp replaceFrom:dstIndex to:(dstIndex + bytesPerRow - 1)
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|
242 |
with:data4 startingAt:srcIndex.
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|
243 |
srcIndex := srcIndex + bytesPerRow.
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|
244 |
dstIndex := dstIndex - bytesPerRow.
|
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0
|
245 |
].
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|
246 |
data4 := tmp.
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247 |
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|
248 |
"expand into bytes"
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249 |
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|
250 |
data := ByteArray new:(width * height).
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|
251 |
data4 expandPixels:inDepth width:width height:height
|
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28
|
252 |
into:data mapping:nil.
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0
|
253 |
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|
254 |
photometric := #palette.
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|
255 |
samplesPerPixel := 1.
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|
256 |
bitsPerSample := #(8).
|
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36
|
257 |
colorMap := Colormap redVector:rMap greenVector:gMap blueVector:bMap.
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0
|
258 |
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|
259 |
"
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21
|
260 |
WindowsIconReader new fromWindowsICOFile:'/phys/clam2//LocalLibrary/Images/WIN_icons/ibm.ico'.
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0
|
261 |
"
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|
262 |
!
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|
263 |
|
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41
|
264 |
fromWindowsBMPStream:aStream
|
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21
|
265 |
| fileSize header inDepth inPlanes compression
|
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|
266 |
imgSize resH resV numColor numImportantColor
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|
267 |
dataStart
|
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103
|
268 |
rawMap rMap gMap bMap srcIndex dstIndex inBytesPerRow
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21
|
269 |
data4 mask tmp bytesPerRow fourBytesPerColorInfo|
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|
270 |
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41
|
271 |
inStream := aStream.
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|
272 |
aStream binary.
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273 |
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|
274 |
fileSize := aStream size.
|
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21
|
275 |
"read the header"
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276 |
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|
277 |
header := ByteArray uninitializedNew:16r54.
|
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41
|
278 |
aStream nextBytes:18 into:header.
|
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21
|
279 |
|
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|
280 |
((header at:(16r0E + 1)) == 40) ifTrue:[ "header-size"
|
|
28
|
281 |
"
|
|
|
282 |
its an Windows3.x BMP file
|
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|
283 |
or OS/2 vsn 2 BMP file
|
|
|
284 |
"
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|
285 |
'BMP: Win3.x or OS/2 vsn 2 format' errorPrintNL.
|
|
21
|
286 |
|
|
41
|
287 |
aStream nextBytes:(40-4) into:header startingAt:19.
|
|
21
|
288 |
|
|
83
|
289 |
width := header wordAt:(16r12 + 1) MSB:false. "(header at:19) + ((header at:20) * 256). "
|
|
|
290 |
height := header wordAt:(16r16 + 1) MSB:false. "(header at:23) + ((header at:24) * 256). "
|
|
|
291 |
inPlanes := header wordAt:(16r1A + 1) MSB:false.
|
|
|
292 |
inDepth := header wordAt:(16r1C + 1) MSB:false.
|
|
|
293 |
compression := header wordAt:(16r1E + 1) MSB:false.
|
|
|
294 |
imgSize := header doubleWordAt:(16r22 + 1) MSB:false.
|
|
|
295 |
resH := header doubleWordAt:(16r26 + 1) MSB:false.
|
|
|
296 |
resV := header doubleWordAt:(16r2A + 1) MSB:false.
|
|
|
297 |
numColor := header doubleWordAt:(16r2E + 1) MSB:false.
|
|
|
298 |
numImportantColor := header doubleWordAt:(16r32 + 1) MSB:false.
|
|
21
|
299 |
|
|
28
|
300 |
numColor == 0 ifTrue:[
|
|
|
301 |
"
|
|
|
302 |
some bmp-writers seem to leave this as zero (which is wrong)
|
|
|
303 |
"
|
|
|
304 |
numColor := 1 bitShift:inDepth.
|
|
|
305 |
'BMP: missing nColor in header - assume ' errorPrint. numColor errorPrintNL
|
|
|
306 |
].
|
|
|
307 |
rawMap := ByteArray uninitializedNew:(numColor * 4).
|
|
41
|
308 |
aStream nextBytes:(numColor * 4) into:rawMap.
|
|
28
|
309 |
fourBytesPerColorInfo := true.
|
|
83
|
310 |
dataStart := header wordAt:(16r0A + 1) MSB:false
|
|
21
|
311 |
] ifFalse:[
|
|
28
|
312 |
((header at:(16r0E + 1)) == 12) ifTrue:[ "core-info header size"
|
|
|
313 |
"
|
|
|
314 |
its an OS/2 (vsn1.2) BMP file
|
|
|
315 |
"
|
|
|
316 |
'BMP: OS/2 vsn 1.2 format' errorPrintNL.
|
|
41
|
317 |
aStream nextBytes:(12-4) into:header startingAt:19.
|
|
21
|
318 |
|
|
83
|
319 |
width := header wordAt:(16r12 + 1) MSB:false. "(header at:19) + ((header at:20) * 256). "
|
|
|
320 |
height := header wordAt:(16r14 + 1) MSB:false. "(header at:21) + ((header at:22) * 256). "
|
|
|
321 |
inPlanes := header wordAt:(16r16 + 1) MSB:false.
|
|
|
322 |
inDepth := header wordAt:(16r18 + 1) MSB:false.
|
|
28
|
323 |
numColor := 1 bitShift:inDepth.
|
|
|
324 |
rawMap := ByteArray uninitializedNew:(numColor * 3).
|
|
41
|
325 |
aStream nextBytes:(numColor * 3) into:rawMap.
|
|
28
|
326 |
fourBytesPerColorInfo := false.
|
|
|
327 |
compression := 0.
|
|
83
|
328 |
dataStart := header wordAt:(16r0A + 1) MSB:false
|
|
28
|
329 |
] ifFalse:[
|
|
|
330 |
'BMP: unknown format' errorPrintNL.
|
|
|
331 |
^ nil
|
|
|
332 |
].
|
|
21
|
333 |
].
|
|
|
334 |
|
|
|
335 |
"read the colormap"
|
|
|
336 |
|
|
|
337 |
rMap := Array new:numColor.
|
|
|
338 |
gMap := Array new:numColor.
|
|
|
339 |
bMap := Array new:numColor.
|
|
|
340 |
srcIndex := 1.
|
|
|
341 |
1 to:numColor do:[:i |
|
|
28
|
342 |
bMap at:i put:(rawMap at:srcIndex).
|
|
|
343 |
srcIndex := srcIndex + 1.
|
|
|
344 |
gMap at:i put:(rawMap at:srcIndex).
|
|
|
345 |
srcIndex := srcIndex + 1.
|
|
|
346 |
rMap at:i put:(rawMap at:srcIndex).
|
|
|
347 |
srcIndex := srcIndex + 1.
|
|
|
348 |
fourBytesPerColorInfo ifTrue:[
|
|
|
349 |
srcIndex := srcIndex + 1.
|
|
|
350 |
]
|
|
21
|
351 |
].
|
|
|
352 |
|
|
102
|
353 |
"/ "
|
|
|
354 |
"/ currently only normal (non-rle) bitmaps
|
|
|
355 |
"/ supported
|
|
|
356 |
"/ "
|
|
|
357 |
"/ compression ~~ 0 ifTrue:[
|
|
|
358 |
"/ 'BMP compression type ' errorPrint. compression errorPrint.
|
|
|
359 |
"/ 'not supported' errorPrintNL.
|
|
|
360 |
"/ ^ nil
|
|
|
361 |
"/ ].
|
|
|
362 |
"/ inPlanes ~~ 1 ifTrue:[
|
|
|
363 |
"/ 'BMP only 1 plane images supported' errorPrintNL.
|
|
|
364 |
"/ ^ nil
|
|
|
365 |
"/ ].
|
|
|
366 |
"/
|
|
|
367 |
"/ "read the data bits"
|
|
|
368 |
"/
|
|
|
369 |
"/ bytesPerRow := width * inDepth + 7 // 8.
|
|
|
370 |
"/ data4 := ByteArray uninitializedNew:(height * bytesPerRow).
|
|
|
371 |
"/
|
|
|
372 |
"/ aStream position:(dataStart + 1).
|
|
|
373 |
"/ aStream nextBytes:(height * bytesPerRow) into:data4.
|
|
|
374 |
"/
|
|
|
375 |
"/ "read mask"
|
|
|
376 |
"/
|
|
|
377 |
"/"
|
|
|
378 |
"/ mask := ByteArray new:(width * height / 8).
|
|
|
379 |
"/ aStream nextBytes:(width * height / 8) into:mask.
|
|
|
380 |
"/"
|
|
|
381 |
"/
|
|
|
382 |
"/ "stupid: last row first"
|
|
|
383 |
"/
|
|
|
384 |
"/ tmp := ByteArray uninitializedNew:(height * bytesPerRow).
|
|
|
385 |
"/ srcIndex := 1.
|
|
|
386 |
"/ dstIndex := (height - 1) * bytesPerRow + 1.
|
|
|
387 |
"/ 1 to:height do:[:row |
|
|
|
388 |
"/ tmp replaceFrom:dstIndex to:(dstIndex + bytesPerRow - 1)
|
|
|
389 |
"/ with:data4 startingAt:srcIndex.
|
|
|
390 |
"/ srcIndex := srcIndex + bytesPerRow.
|
|
|
391 |
"/ dstIndex := dstIndex - bytesPerRow.
|
|
|
392 |
"/ ].
|
|
|
393 |
"/ data4 := tmp.
|
|
103
|
394 |
"/ data := ByteArray new:(width * height).
|
|
|
395 |
"/ data4 expandPixels:inDepth width:width height:height
|
|
|
396 |
"/ into:data mapping:nil.
|
|
|
397 |
"/
|
|
102
|
398 |
|
|
21
|
399 |
compression ~~ 0 ifTrue:[
|
|
102
|
400 |
"/ some compression
|
|
|
401 |
compression == 1 ifTrue:[
|
|
|
402 |
"/ RLE8 - must be depth-8
|
|
|
403 |
inDepth == 8 ifFalse:[
|
|
|
404 |
'BMP: RLE8 compression only allowed with depth8 images' errorPrintNL.
|
|
|
405 |
^ nil
|
|
|
406 |
].
|
|
|
407 |
].
|
|
|
408 |
compression == 2 ifTrue:[
|
|
|
409 |
"/ RLE4 - must be depth-4
|
|
|
410 |
inDepth == 4 ifFalse:[
|
|
|
411 |
'BMP: RLE4 compression only allowed with depth4 images' errorPrintNL.
|
|
|
412 |
^ nil
|
|
|
413 |
].
|
|
|
414 |
].
|
|
21
|
415 |
].
|
|
102
|
416 |
|
|
21
|
417 |
inPlanes ~~ 1 ifTrue:[
|
|
102
|
418 |
'BMP: only 1 plane images supported' errorPrintNL.
|
|
28
|
419 |
^ nil
|
|
21
|
420 |
].
|
|
|
421 |
|
|
|
422 |
bytesPerRow := width * inDepth + 7 // 8.
|
|
102
|
423 |
"/ bmp data is always 32bit aligned; if required,
|
|
|
424 |
inBytesPerRow := ((bytesPerRow + 3) // 4) * 4.
|
|
41
|
425 |
aStream position:(dataStart + 1).
|
|
21
|
426 |
|
|
102
|
427 |
data := ByteArray uninitializedNew:(height * width "bytesPerRow").
|
|
103
|
428 |
(self loadBMPWidth:width height:height depth:inDepth compression:compression from:aStream into:data) ifFalse:[
|
|
|
429 |
^ nil
|
|
21
|
430 |
].
|
|
|
431 |
"expand into bytes"
|
|
|
432 |
|
|
|
433 |
photometric := #palette.
|
|
|
434 |
samplesPerPixel := 1.
|
|
|
435 |
bitsPerSample := #(8).
|
|
36
|
436 |
colorMap := Colormap redVector:rMap greenVector:gMap blueVector:bMap.
|
|
103
|
437 |
|
|
|
438 |
"Modified: 17.9.1995 / 18:48:46 / claus"
|
|
21
|
439 |
!
|
|
|
440 |
|
|
41
|
441 |
fromStream:aStream
|
|
21
|
442 |
| fileSize header |
|
|
0
|
443 |
|
|
41
|
444 |
inStream := aStream.
|
|
0
|
445 |
|
|
41
|
446 |
aStream binary.
|
|
|
447 |
fileSize := aStream size.
|
|
0
|
448 |
|
|
21
|
449 |
fileSize < 16 ifTrue:[
|
|
41
|
450 |
'WINREADER: short file' errorPrintNL.
|
|
28
|
451 |
^ nil
|
|
21
|
452 |
].
|
|
|
453 |
|
|
|
454 |
header := ByteArray uninitializedNew:4.
|
|
41
|
455 |
aStream nextBytes:4 into:header.
|
|
21
|
456 |
|
|
|
457 |
(header startsWith:#(66 77)) ifTrue:[ "BM"
|
|
41
|
458 |
aStream position:1.
|
|
28
|
459 |
'WINREADER: Win3.x or OS/2 vsn 2 BM format' errorPrintNL.
|
|
41
|
460 |
^ self fromWindowsBMPStream:aStream
|
|
21
|
461 |
].
|
|
|
462 |
(header startsWith:#(66 65)) ifTrue:[ "BA"
|
|
41
|
463 |
aStream position:1.
|
|
28
|
464 |
'WINREADER: OS/2 vsn 2 BA format' errorPrintNL.
|
|
41
|
465 |
^ self fromOS2Stream:aStream
|
|
21
|
466 |
].
|
|
|
467 |
(header startsWith:#(73 67)) ifTrue:[ "IC"
|
|
41
|
468 |
aStream position:1.
|
|
28
|
469 |
'WINREADER: OS/2 IC format' errorPrintNL.
|
|
41
|
470 |
^ self fromOS2Stream:aStream
|
|
21
|
471 |
].
|
|
|
472 |
(header startsWith:#(80 84)) ifTrue:[ "PT"
|
|
41
|
473 |
aStream position:1.
|
|
28
|
474 |
'WINREADER: OS/2 PT format' errorPrintNL.
|
|
41
|
475 |
^ self fromOS2Stream:aStream
|
|
21
|
476 |
].
|
|
103
|
477 |
(header startsWith:#(16r53 16r5A)) ifTrue:[ "SZ"
|
|
|
478 |
'WINREADER: SZ format not supported:' errorPrintNL.
|
|
|
479 |
^ nil.
|
|
|
480 |
aStream position:1.
|
|
|
481 |
'WINREADER: OS/2 PT format' errorPrintNL.
|
|
|
482 |
^ self fromOS2Stream:aStream
|
|
|
483 |
].
|
|
21
|
484 |
(header startsWith:#(0 0 1 0)) ifTrue:[
|
|
41
|
485 |
aStream position:1.
|
|
28
|
486 |
'WINREADER: Win3.x ICO format' errorPrintNL.
|
|
41
|
487 |
^ self fromWindowsICOStream:aStream
|
|
21
|
488 |
].
|
|
103
|
489 |
'WINREADER: format not supported:' errorPrint.
|
|
|
490 |
((header at:1) printStringRadix:16) errorPrint.
|
|
|
491 |
' ' errorPrint.
|
|
|
492 |
((header at:2) printStringRadix:16) errorPrintNL.
|
|
21
|
493 |
^ nil
|
|
|
494 |
|
|
|
495 |
"
|
|
|
496 |
Image fromFile:'/phys/clam//LocalLibrary/Images/OS2_icons/dos.ico'
|
|
|
497 |
"
|
|
103
|
498 |
|
|
|
499 |
"Modified: 17.9.1995 / 18:59:07 / claus"
|
|
21
|
500 |
!
|
|
|
501 |
|
|
41
|
502 |
fromOS2Stream:aStream
|
|
21
|
503 |
| header inDepth
|
|
103
|
504 |
rawMap rMap gMap bMap srcIndex dstIndex inBytesPerRow
|
|
21
|
505 |
data4 mask tmp bytesPerRow nColors nByte|
|
|
|
506 |
|
|
41
|
507 |
inStream := aStream.
|
|
|
508 |
aStream binary.
|
|
21
|
509 |
|
|
0
|
510 |
"read the header"
|
|
|
511 |
|
|
3
|
512 |
header := ByteArray uninitializedNew:8r110.
|
|
41
|
513 |
aStream nextBytes:16 into:header.
|
|
21
|
514 |
|
|
0
|
515 |
(header startsWith:#(73 67)) ifTrue:[
|
|
28
|
516 |
"IC format"
|
|
41
|
517 |
aStream nextBytes:10 into:header startingAt:17.
|
|
28
|
518 |
width := header at:7.
|
|
|
519 |
height := header at:9.
|
|
|
520 |
inDepth := 2 "header at:11". "where is it"
|
|
0
|
521 |
] ifFalse:[
|
|
41
|
522 |
aStream nextBytes:(8r110-16) into:header startingAt:17.
|
|
28
|
523 |
width := header at:8r101.
|
|
|
524 |
height := header at:8r103.
|
|
|
525 |
inDepth := header at:8r107.
|
|
0
|
526 |
].
|
|
|
527 |
|
|
|
528 |
"read the colormap"
|
|
|
529 |
|
|
|
530 |
nColors := 1 bitShift:inDepth.
|
|
|
531 |
|
|
3
|
532 |
rawMap := ByteArray uninitializedNew:(nColors*3).
|
|
41
|
533 |
aStream nextBytes:(nColors*3) into:rawMap.
|
|
0
|
534 |
rMap := Array new:nColors.
|
|
|
535 |
gMap := Array new:nColors.
|
|
|
536 |
bMap := Array new:nColors.
|
|
|
537 |
srcIndex := 1.
|
|
|
538 |
1 to:nColors do:[:i |
|
|
28
|
539 |
bMap at:i put:(rawMap at:srcIndex).
|
|
|
540 |
srcIndex := srcIndex + 1.
|
|
|
541 |
gMap at:i put:(rawMap at:srcIndex).
|
|
|
542 |
srcIndex := srcIndex + 1.
|
|
|
543 |
rMap at:i put:(rawMap at:srcIndex).
|
|
|
544 |
srcIndex := srcIndex + 1.
|
|
0
|
545 |
].
|
|
|
546 |
|
|
|
547 |
"read mask"
|
|
|
548 |
|
|
3
|
549 |
nByte := width * height + 7 // 8.
|
|
|
550 |
mask := ByteArray uninitializedNew:nByte.
|
|
41
|
551 |
aStream nextBytes:nByte into:mask.
|
|
0
|
552 |
|
|
|
553 |
"what is this"
|
|
|
554 |
|
|
41
|
555 |
aStream nextBytes:nByte into:mask.
|
|
0
|
556 |
|
|
103
|
557 |
"/ "read the data bits"
|
|
|
558 |
"/
|
|
|
559 |
"/ bytesPerRow := width * inDepth + 7 // 8.
|
|
|
560 |
"/ data4 := ByteArray uninitializedNew:(height * bytesPerRow).
|
|
|
561 |
"/ inDepth == 8 ifTrue:[
|
|
|
562 |
"/ ].
|
|
|
563 |
"/ aStream nextBytes:(height * bytesPerRow) into:data4.
|
|
|
564 |
"/
|
|
|
565 |
"/ "stupid: last row first"
|
|
|
566 |
"/
|
|
|
567 |
"/ tmp := ByteArray new:(height * bytesPerRow).
|
|
|
568 |
"/ srcIndex := 1.
|
|
|
569 |
"/ dstIndex := (height - 1) * bytesPerRow + 1.
|
|
|
570 |
"/ 1 to:height do:[:row |
|
|
|
571 |
"/ tmp replaceFrom:dstIndex to:(dstIndex + bytesPerRow - 1)
|
|
|
572 |
"/ with:data4 startingAt:srcIndex.
|
|
|
573 |
"/ srcIndex := srcIndex + bytesPerRow.
|
|
|
574 |
"/ dstIndex := dstIndex - bytesPerRow.
|
|
|
575 |
"/ ].
|
|
|
576 |
"/ data4 := tmp.
|
|
|
577 |
"/
|
|
|
578 |
"/ "expand into bytes"
|
|
|
579 |
"/
|
|
|
580 |
"/ data := ByteArray new:(width * height).
|
|
|
581 |
"/ data4 expandPixels:inDepth width:width height:height
|
|
|
582 |
"/ into:data mapping:nil.
|
|
|
583 |
"/
|
|
0
|
584 |
|
|
3
|
585 |
bytesPerRow := width * inDepth + 7 // 8.
|
|
103
|
586 |
"/ bmp data is always 32bit aligned; if required,
|
|
|
587 |
inBytesPerRow := ((bytesPerRow + 3) // 4) * 4.
|
|
0
|
588 |
|
|
103
|
589 |
data := ByteArray uninitializedNew:(height * width "bytesPerRow").
|
|
|
590 |
(self loadBMPWidth:width height:height depth:inDepth compression:0 from:aStream into:data) ifFalse:[
|
|
|
591 |
^ nil
|
|
0
|
592 |
].
|
|
|
593 |
photometric := #palette.
|
|
|
594 |
samplesPerPixel := 1.
|
|
|
595 |
bitsPerSample := #(8).
|
|
36
|
596 |
colorMap := Colormap redVector:rMap greenVector:gMap blueVector:bMap.
|
|
0
|
597 |
|
|
|
598 |
"
|
|
|
599 |
|i f|
|
|
|
600 |
i := Image fromFile:'/LocalLibrary/Images/OS2/dos3.ico'.
|
|
|
601 |
f := i asFormOn:Display.
|
|
18
|
602 |
v displayOpaqueForm:(f magnifyBy:2@2) x:5 y:5
|
|
0
|
603 |
"
|
|
103
|
604 |
|
|
|
605 |
"Modified: 17.9.1995 / 18:49:24 / claus"
|
|
0
|
606 |
! !
|