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0
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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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category:'Graphics-Support'
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0
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!
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WindowsIconReader comment:'
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21
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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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24
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28
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$Header: /cvs/stx/stx/libview2/WindowsIconReader.st,v 1.8 1994-10-10 02:34:13 claus Exp $
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21
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'!
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0
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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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33 |
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21
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34 |
This software is furnished under a license and may be used
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35 |
only in accordance with the terms of that license and with the
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36 |
inclusion of the above copyright notice. This software may not
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37 |
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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28
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$Header: /cvs/stx/stx/libview2/WindowsIconReader.st,v 1.8 1994-10-10 02:34:13 claus Exp $
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21
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"
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!
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48 |
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documentation
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"
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this class provides methods for loading Windows and OS2 icon files..
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"
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! !
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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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!WindowsIconReader methodsFor:'reading from file'!
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fromOS2File: aFilename
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inStream := self class streamReadingFile:aFilename.
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inStream isNil ifTrue:[^ nil].
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inStream binary.
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^ self fromOS2Stream.
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!
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0
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fromWindowsBMPFile: aFilename
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inStream := self class streamReadingFile:aFilename.
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inStream isNil ifTrue:[^ nil].
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inStream binary.
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^ self fromWindowsBMPStream.
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!
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fromWindowsICOFile: aFilename
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inStream := self class streamReadingFile:aFilename.
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inStream isNil ifTrue:[^ nil].
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^ self fromWindowsICOStream.
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"
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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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fromWindowsICOStream
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| header inDepth
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rawMap rMap gMap bMap srcIndex dstIndex
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data4 mask tmp bytesPerRow nColor|
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0
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inStream binary.
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"read the header"
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header := ByteArray uninitializedNew:(6 + 16 + 40).
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inStream nextBytes:(6 + 16 + 40) into:header.
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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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"15, 16, 17, 18 pixel array size"
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"19, 20, 21, 22 offset "
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"23, ... , 62 ?"
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106 |
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0
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inDepth := header at:16r25.
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108 |
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109 |
"read the colormap"
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110 |
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21
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rawMap := ByteArray uninitializedNew:(16*4).
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inStream nextBytes:(16*4) into:rawMap.
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0
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rMap := Array new:16.
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gMap := Array new:16.
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bMap := Array new:16.
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srcIndex := 1.
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1 to:16 do:[:i |
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28
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bMap at:i put:(rawMap at:srcIndex).
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srcIndex := srcIndex + 1.
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gMap at:i put:(rawMap at:srcIndex).
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srcIndex := srcIndex + 1.
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rMap at:i put:(rawMap at:srcIndex).
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srcIndex := srcIndex + 1.
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srcIndex := srcIndex + 1.
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0
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125 |
].
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126 |
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127 |
"read the data bits"
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128 |
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3
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bytesPerRow := width * inDepth + 7 // 8.
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data4 := ByteArray uninitializedNew:(height * bytesPerRow).
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0
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inStream nextBytes:(height * bytesPerRow) into:data4.
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132 |
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"read mask"
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"
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mask := ByteArray new:(width * height / 8).
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inStream nextBytes:(width * height / 8) into:mask.
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"
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139 |
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140 |
"stupid: last row first"
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141 |
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3
|
142 |
tmp := ByteArray uninitializedNew:(height * bytesPerRow).
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0
|
143 |
srcIndex := 1.
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dstIndex := (height - 1) * bytesPerRow + 1.
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145 |
1 to:height do:[:row |
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28
|
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tmp replaceFrom:dstIndex to:(dstIndex + bytesPerRow - 1)
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147 |
with:data4 startingAt:srcIndex.
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148 |
srcIndex := srcIndex + bytesPerRow.
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|
149 |
dstIndex := dstIndex - bytesPerRow.
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0
|
150 |
].
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151 |
data4 := tmp.
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152 |
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153 |
"expand into bytes"
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154 |
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155 |
data := ByteArray new:(width * height).
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156 |
data4 expandPixels:inDepth width:width height:height
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28
|
157 |
into:data mapping:nil.
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0
|
158 |
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|
159 |
photometric := #palette.
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|
160 |
samplesPerPixel := 1.
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|
161 |
bitsPerSample := #(8).
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|
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colorMap := Array with:rMap with:gMap with:bMap.
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inStream close.
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164 |
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165 |
"
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21
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WindowsIconReader new fromWindowsICOFile:'/phys/clam2//LocalLibrary/Images/WIN_icons/ibm.ico'.
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0
|
167 |
"
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168 |
!
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169 |
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21
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170 |
fromWindowsBMPStream
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171 |
| fileSize header inDepth inPlanes compression
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172 |
imgSize resH resV numColor numImportantColor
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173 |
dataStart
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0
|
174 |
rawMap rMap gMap bMap srcIndex dstIndex
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21
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175 |
data4 mask tmp bytesPerRow fourBytesPerColorInfo|
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176 |
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177 |
fileSize := inStream size.
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178 |
"read the header"
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179 |
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180 |
header := ByteArray uninitializedNew:16r54.
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181 |
inStream nextBytes:18 into:header.
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182 |
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183 |
((header at:(16r0E + 1)) == 40) ifTrue:[ "header-size"
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28
|
184 |
"
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|
185 |
its an Windows3.x BMP file
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186 |
or OS/2 vsn 2 BMP file
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|
187 |
"
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|
188 |
'BMP: Win3.x or OS/2 vsn 2 format' errorPrintNL.
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21
|
189 |
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28
|
190 |
inStream nextBytes:(40-4) into:header startingAt:19.
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21
|
191 |
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28
|
192 |
width := header wordAt:(16r12 + 1). "(header at:19) + ((header at:20) * 256). "
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|
193 |
height := header wordAt:(16r16 + 1). "(header at:23) + ((header at:24) * 256). "
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|
194 |
inPlanes := header wordAt:(16r1A + 1).
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|
195 |
inDepth := header wordAt:(16r1C + 1).
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|
196 |
compression := header wordAt:(16r1E + 1).
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|
197 |
imgSize := header doubleWordAt:(16r22 + 1).
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|
198 |
resH := header doubleWordAt:(16r26 + 1).
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|
199 |
resV := header doubleWordAt:(16r2A + 1).
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200 |
numColor := header doubleWordAt:(16r2E + 1).
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|
201 |
numImportantColor := header doubleWordAt:(16r32 + 1).
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21
|
202 |
|
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28
|
203 |
numColor == 0 ifTrue:[
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|
204 |
"
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|
205 |
some bmp-writers seem to leave this as zero (which is wrong)
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|
206 |
"
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|
207 |
numColor := 1 bitShift:inDepth.
|
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|
208 |
'BMP: missing nColor in header - assume ' errorPrint. numColor errorPrintNL
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|
209 |
].
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|
210 |
rawMap := ByteArray uninitializedNew:(numColor * 4).
|
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|
211 |
inStream nextBytes:(numColor * 4) into:rawMap.
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|
212 |
fourBytesPerColorInfo := true.
|
|
|
213 |
dataStart := header wordAt:(16r0A + 1)
|
|
21
|
214 |
] ifFalse:[
|
|
28
|
215 |
((header at:(16r0E + 1)) == 12) ifTrue:[ "core-info header size"
|
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|
216 |
"
|
|
|
217 |
its an OS/2 (vsn1.2) BMP file
|
|
|
218 |
"
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|
219 |
'BMP: OS/2 vsn 1.2 format' errorPrintNL.
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|
220 |
inStream nextBytes:(12-4) into:header startingAt:19.
|
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21
|
221 |
|
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28
|
222 |
width := header wordAt:(16r12 + 1). "(header at:19) + ((header at:20) * 256). "
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|
223 |
height := header wordAt:(16r14 + 1). "(header at:21) + ((header at:22) * 256). "
|
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|
224 |
inPlanes := header wordAt:(16r16 + 1).
|
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|
225 |
inDepth := header wordAt:(16r18 + 1).
|
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|
226 |
numColor := 1 bitShift:inDepth.
|
|
|
227 |
rawMap := ByteArray uninitializedNew:(numColor * 3).
|
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|
228 |
inStream nextBytes:(numColor * 3) into:rawMap.
|
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|
229 |
fourBytesPerColorInfo := false.
|
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|
230 |
compression := 0.
|
|
|
231 |
dataStart := header wordAt:(16r0A + 1)
|
|
|
232 |
] ifFalse:[
|
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|
233 |
'BMP: unknown format' errorPrintNL.
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|
234 |
inStream close.
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|
235 |
^ nil
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|
236 |
].
|
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21
|
237 |
].
|
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|
238 |
|
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|
239 |
"read the colormap"
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|
240 |
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|
241 |
rMap := Array new:numColor.
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|
242 |
gMap := Array new:numColor.
|
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|
243 |
bMap := Array new:numColor.
|
|
|
244 |
srcIndex := 1.
|
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|
245 |
1 to:numColor do:[:i |
|
|
28
|
246 |
bMap at:i put:(rawMap at:srcIndex).
|
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|
247 |
srcIndex := srcIndex + 1.
|
|
|
248 |
gMap at:i put:(rawMap at:srcIndex).
|
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|
249 |
srcIndex := srcIndex + 1.
|
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|
250 |
rMap at:i put:(rawMap at:srcIndex).
|
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|
251 |
srcIndex := srcIndex + 1.
|
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|
252 |
fourBytesPerColorInfo ifTrue:[
|
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|
253 |
srcIndex := srcIndex + 1.
|
|
|
254 |
]
|
|
21
|
255 |
].
|
|
|
256 |
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|
257 |
"
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|
258 |
currently only normal (non-rle) bitmaps
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|
259 |
supported
|
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|
260 |
"
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|
261 |
compression ~~ 0 ifTrue:[
|
|
28
|
262 |
'BMP compression type ' errorPrint. compression errorPrint.
|
|
|
263 |
'not supported' errorPrintNL.
|
|
|
264 |
inStream close.
|
|
|
265 |
^ nil
|
|
21
|
266 |
].
|
|
|
267 |
inPlanes ~~ 1 ifTrue:[
|
|
28
|
268 |
'BMP only 1 plane images supported' errorPrintNL.
|
|
|
269 |
inStream close.
|
|
|
270 |
^ nil
|
|
21
|
271 |
].
|
|
|
272 |
|
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|
273 |
"read the data bits"
|
|
|
274 |
|
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|
275 |
bytesPerRow := width * inDepth + 7 // 8.
|
|
|
276 |
data4 := ByteArray uninitializedNew:(height * bytesPerRow).
|
|
|
277 |
|
|
|
278 |
inStream position:(dataStart + 1).
|
|
|
279 |
inStream nextBytes:(height * bytesPerRow) into:data4.
|
|
|
280 |
|
|
|
281 |
"read mask"
|
|
|
282 |
|
|
|
283 |
"
|
|
|
284 |
mask := ByteArray new:(width * height / 8).
|
|
|
285 |
inStream nextBytes:(width * height / 8) into:mask.
|
|
|
286 |
"
|
|
|
287 |
|
|
|
288 |
"stupid: last row first"
|
|
|
289 |
|
|
|
290 |
tmp := ByteArray uninitializedNew:(height * bytesPerRow).
|
|
|
291 |
srcIndex := 1.
|
|
|
292 |
dstIndex := (height - 1) * bytesPerRow + 1.
|
|
|
293 |
1 to:height do:[:row |
|
|
28
|
294 |
tmp replaceFrom:dstIndex to:(dstIndex + bytesPerRow - 1)
|
|
|
295 |
with:data4 startingAt:srcIndex.
|
|
|
296 |
srcIndex := srcIndex + bytesPerRow.
|
|
|
297 |
dstIndex := dstIndex - bytesPerRow.
|
|
21
|
298 |
].
|
|
|
299 |
data4 := tmp.
|
|
|
300 |
|
|
|
301 |
"expand into bytes"
|
|
|
302 |
|
|
|
303 |
data := ByteArray new:(width * height).
|
|
|
304 |
data4 expandPixels:inDepth width:width height:height
|
|
28
|
305 |
into:data mapping:nil.
|
|
21
|
306 |
|
|
|
307 |
photometric := #palette.
|
|
|
308 |
samplesPerPixel := 1.
|
|
|
309 |
bitsPerSample := #(8).
|
|
|
310 |
colorMap := Array with:rMap with:gMap with:bMap.
|
|
|
311 |
inStream close.
|
|
|
312 |
!
|
|
|
313 |
|
|
|
314 |
fromFile: aFilename
|
|
|
315 |
| fileSize header |
|
|
0
|
316 |
|
|
12
|
317 |
inStream := self class streamReadingFile:aFilename.
|
|
|
318 |
inStream isNil ifTrue:[^ nil].
|
|
0
|
319 |
|
|
|
320 |
inStream binary.
|
|
|
321 |
fileSize := inStream size.
|
|
|
322 |
|
|
21
|
323 |
fileSize < 16 ifTrue:[
|
|
28
|
324 |
inStream close.
|
|
|
325 |
self error:'WINREADER: short file'.
|
|
|
326 |
^ nil
|
|
21
|
327 |
].
|
|
|
328 |
|
|
|
329 |
header := ByteArray uninitializedNew:4.
|
|
|
330 |
inStream nextBytes:4 into:header.
|
|
|
331 |
|
|
|
332 |
(header startsWith:#(66 77)) ifTrue:[ "BM"
|
|
28
|
333 |
inStream position:1.
|
|
|
334 |
'WINREADER: Win3.x or OS/2 vsn 2 BM format' errorPrintNL.
|
|
|
335 |
^ self fromWindowsBMPStream
|
|
21
|
336 |
].
|
|
|
337 |
(header startsWith:#(66 65)) ifTrue:[ "BA"
|
|
28
|
338 |
inStream position:1.
|
|
|
339 |
'WINREADER: OS/2 vsn 2 BA format' errorPrintNL.
|
|
|
340 |
^ self fromOS2Stream
|
|
21
|
341 |
].
|
|
|
342 |
(header startsWith:#(73 67)) ifTrue:[ "IC"
|
|
28
|
343 |
inStream position:1.
|
|
|
344 |
'WINREADER: OS/2 IC format' errorPrintNL.
|
|
|
345 |
^ self fromOS2Stream
|
|
21
|
346 |
].
|
|
|
347 |
(header startsWith:#(80 84)) ifTrue:[ "PT"
|
|
28
|
348 |
inStream position:1.
|
|
|
349 |
'WINREADER: OS/2 PT format' errorPrintNL.
|
|
|
350 |
^ self fromOS2Stream
|
|
21
|
351 |
].
|
|
|
352 |
(header startsWith:#(0 0 1 0)) ifTrue:[
|
|
28
|
353 |
inStream position:1.
|
|
|
354 |
'WINREADER: Win3.x ICO format' errorPrintNL.
|
|
|
355 |
^ self fromWindowsICOStream
|
|
21
|
356 |
].
|
|
|
357 |
self error:'WINREADER: format not supported'.
|
|
|
358 |
inStream close.
|
|
|
359 |
^ nil
|
|
|
360 |
|
|
|
361 |
"
|
|
|
362 |
Image fromFile:'/phys/clam//LocalLibrary/Images/OS2_icons/dos.ico'
|
|
|
363 |
"
|
|
|
364 |
!
|
|
|
365 |
|
|
|
366 |
fromOS2Stream
|
|
|
367 |
| header inDepth
|
|
|
368 |
rawMap rMap gMap bMap srcIndex dstIndex
|
|
|
369 |
data4 mask tmp bytesPerRow nColors nByte|
|
|
|
370 |
|
|
|
371 |
inStream binary.
|
|
|
372 |
|
|
0
|
373 |
"read the header"
|
|
|
374 |
|
|
3
|
375 |
header := ByteArray uninitializedNew:8r110.
|
|
0
|
376 |
inStream nextBytes:16 into:header.
|
|
21
|
377 |
|
|
0
|
378 |
(header startsWith:#(73 67)) ifTrue:[
|
|
28
|
379 |
"IC format"
|
|
|
380 |
inStream nextBytes:10 into:header startingAt:17.
|
|
|
381 |
width := header at:7.
|
|
|
382 |
height := header at:9.
|
|
|
383 |
inDepth := 2 "header at:11". "where is it"
|
|
0
|
384 |
] ifFalse:[
|
|
28
|
385 |
inStream nextBytes:(8r110-16) into:header startingAt:17.
|
|
|
386 |
width := header at:8r101.
|
|
|
387 |
height := header at:8r103.
|
|
|
388 |
inDepth := header at:8r107.
|
|
0
|
389 |
].
|
|
|
390 |
|
|
|
391 |
"read the colormap"
|
|
|
392 |
|
|
|
393 |
nColors := 1 bitShift:inDepth.
|
|
|
394 |
|
|
3
|
395 |
rawMap := ByteArray uninitializedNew:(nColors*3).
|
|
0
|
396 |
inStream nextBytes:(nColors*3) into:rawMap.
|
|
|
397 |
rMap := Array new:nColors.
|
|
|
398 |
gMap := Array new:nColors.
|
|
|
399 |
bMap := Array new:nColors.
|
|
|
400 |
srcIndex := 1.
|
|
|
401 |
1 to:nColors do:[:i |
|
|
28
|
402 |
bMap at:i put:(rawMap at:srcIndex).
|
|
|
403 |
srcIndex := srcIndex + 1.
|
|
|
404 |
gMap at:i put:(rawMap at:srcIndex).
|
|
|
405 |
srcIndex := srcIndex + 1.
|
|
|
406 |
rMap at:i put:(rawMap at:srcIndex).
|
|
|
407 |
srcIndex := srcIndex + 1.
|
|
0
|
408 |
].
|
|
|
409 |
|
|
|
410 |
"read mask"
|
|
|
411 |
|
|
3
|
412 |
nByte := width * height + 7 // 8.
|
|
|
413 |
mask := ByteArray uninitializedNew:nByte.
|
|
|
414 |
inStream nextBytes:nByte into:mask.
|
|
0
|
415 |
|
|
|
416 |
"what is this"
|
|
|
417 |
|
|
3
|
418 |
inStream nextBytes:nByte into:mask.
|
|
0
|
419 |
|
|
|
420 |
"read the data bits"
|
|
|
421 |
|
|
3
|
422 |
bytesPerRow := width * inDepth + 7 // 8.
|
|
|
423 |
data4 := ByteArray uninitializedNew:(height * bytesPerRow).
|
|
0
|
424 |
inStream nextBytes:(height * bytesPerRow) into:data4.
|
|
|
425 |
|
|
|
426 |
"stupid: last row first"
|
|
|
427 |
|
|
|
428 |
tmp := ByteArray new:(height * bytesPerRow).
|
|
|
429 |
srcIndex := 1.
|
|
|
430 |
dstIndex := (height - 1) * bytesPerRow + 1.
|
|
|
431 |
1 to:height do:[:row |
|
|
28
|
432 |
tmp replaceFrom:dstIndex to:(dstIndex + bytesPerRow - 1)
|
|
|
433 |
with:data4 startingAt:srcIndex.
|
|
|
434 |
srcIndex := srcIndex + bytesPerRow.
|
|
|
435 |
dstIndex := dstIndex - bytesPerRow.
|
|
0
|
436 |
].
|
|
|
437 |
data4 := tmp.
|
|
|
438 |
|
|
|
439 |
"expand into bytes"
|
|
|
440 |
|
|
|
441 |
data := ByteArray new:(width * height).
|
|
|
442 |
data4 expandPixels:inDepth width:width height:height
|
|
28
|
443 |
into:data mapping:nil.
|
|
0
|
444 |
|
|
|
445 |
photometric := #palette.
|
|
|
446 |
samplesPerPixel := 1.
|
|
|
447 |
bitsPerSample := #(8).
|
|
|
448 |
colorMap := Array with:rMap with:gMap with:bMap.
|
|
|
449 |
inStream close.
|
|
|
450 |
|
|
|
451 |
"
|
|
|
452 |
|i f|
|
|
|
453 |
i := Image fromFile:'/LocalLibrary/Images/OS2/dos3.ico'.
|
|
|
454 |
f := i asFormOn:Display.
|
|
18
|
455 |
v displayOpaqueForm:(f magnifyBy:2@2) x:5 y:5
|
|
0
|
456 |
"
|
|
|
457 |
! !
|