/usr/share/tcltk/tklib0.5/ico/ico.tcl is in tklib 0.5-3.
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#
# Win32 ico manipulation code
#
# Copyright (c) 2003-2007 Aaron Faupell
# Copyright (c) 2003-2004 ActiveState Corporation
#
# RCS: @(#) $Id: ico.tcl,v 1.28 2008/03/12 07:25:49 hobbs Exp $
# Sample usage:
# set file bin/wish.exe
# set icos [::ico::icons $file]
# set img [::ico::getIcon $file [lindex $icos 1] -format image -res 32]
package require Tcl 8.4
# Instantiate vars we need for this package
namespace eval ::ico {
namespace export icons iconMembers getIcon getIconByName writeIcon copyIcon transparentColor clearCache EXEtoICO
# stores cached indices of icons found
variable RES
array set RES {}
# used for 4bpp number conversion
variable BITS
array set BITS [list {} 0 0000 0 0001 1 0010 2 0011 3 0100 4 \
0101 5 0110 6 0111 7 1000 8 1001 9 \
1010 10 1011 11 1100 12 1101 13 1110 14 1111 15 \
\
00000 00 00001 0F 00010 17 00011 1F \
00100 27 00101 2F 00110 37 00111 3F \
01000 47 01001 4F 01010 57 01011 5F \
01100 67 01101 6F 01110 77 01111 7F \
10000 87 10001 8F 10010 97 10011 9F \
10100 A7 10101 AF 10110 B7 10111 BF \
11000 C7 11001 CF 11010 D7 11011 DF \
11100 E7 11101 EF 11110 F7 11111 FF]
}
# icons --
#
# List of icons in a file
#
# ARGS:
# file File to extract icon info from.
# ?-type? Type of file. If not specified, it is derived from
# the file extension. Currently recognized types are
# EXE, DLL, ICO, ICL, BMP, and ICODATA
#
# RETURNS:
# list of icon names or numerical IDs
#
proc ::ico::icons {file args} {
parseOpts type $args
if {![info exists type]} {
# $type wasn't specified - get it from the extension
set type [fileext $file]
}
if {![llength [info commands getIconList$type]]} {
return -code error "unsupported file format $type"
}
getIconList$type [file normalize $file]
}
# iconMembers --
#
# Get info on images which make up an icon
#
# ARGS:
# file File containing icon
# name Name of the icon in the file
# ?-type? Type of file. If not specified, it is derived from
# the file extension. Currently recognized types are
# EXE, DLL, ICO, ICL, BMP, and ICODATA
#
# RETURNS:
# list of icons as tuples {name width height bpp}
#
proc ::ico::iconMembers {file name args} {
parseOpts type $args
if {![info exists type]} {
# $type wasn't specified - get it from the extension
set type [fileext $file]
}
if {![llength [info commands getIconMembers$type]]} {
return -code error "unsupported file format $type"
}
getIconMembers$type [file normalize $file] $name
}
# getIcon --
#
# Get pixel data or image of icon
#
# ARGS:
# file File to extract icon info from.
# name Name of image in the file to use. The name is the first element
# in the sublists returned by iconMembers.
# ?-res? Set the preferred resolution.
# ?-bpp? Set the preferred color depth in bits per pixel.
# ?-exact? Accept only exact matches for res and bpp. Returns
# an error if there is no exact match.
# ?-type? Type of file. If not specified, it is derived from
# the file extension. Currently recognized types are
# EXE, DLL, ICO, ICL, BMP, and ICODATA
# ?-format? Output format. Must be one of "image" or "colors"
# 'image' will return the name of a Tk image.
# 'colors' will return a list of pixel values
# ?-image? If output is image, use this as the name of Tk image
# created
#
# RETURNS:
# pixel data as a list that could be passed to 'image create'
# or the name of a Tk image
#
proc ::ico::getIcon {file name args} {
set image {}
set format image
set exact 0
set bpp 24
parseOpts {type format image res bpp exact} $args
if {![info exists type]} {
# $type wasn't specified - get it from the extension
set type [fileext $file]
}
if {![llength [info commands getRawIconData$type]]} {
return -code error "unsupported file format $type"
}
# ICODATA is a pure data type - not a real file
if {$type ne "ICODATA"} {
set file [file normalize $file]
}
set mem [getIconMembers$type $file $name]
if {![info exists res]} {
set icon [lindex $mem 0 0]
} elseif {$exact} {
set icon [lsearch -inline -glob $mem "* $res $bpp"]
if {$icon == ""} { return -code error "No matching icon" }
} else {
set mem [lsort -integer -index 1 $mem]
set match ""
foreach x $mem {
if {[lindex $x 1] == [lindex $res 0]} { lappend match $x }
}
if {$match == ""} {
# todo: resize a larger icon
#return -code error "No matching icon"
set match [list [lindex $mem end]]
}
set match [lsort -integer -decreasing -index 3 $match]
foreach x $match {
if {[lindex $x 3] <= $bpp} { set icon [lindex $x 0]; break }
}
if {![info exists icon]} { set icon [lindex $match end 0]}
}
if {$format eq "name"} {
return $icon
}
set colors [eval [linsert [getRawIconData$type $file $icon] 0 getIconAsColorList]]
if {$format eq "image"} {
return [createImage $colors $image]
}
return $colors
}
# getIconByName --
#
# Get pixel data or image of icon name in file. The icon name
# is the first element of the sublist from [iconMembers].
#
# ARGS:
# file File to extract icon info from.
# name Name of image in the file to use. The name is the first element
# in the sublists returned by iconMembers.
# ?-type? Type of file. If not specified, it is derived from
# the file extension. Currently recognized types are
# EXE, DLL, ICO, ICL, BMP, and ICODATA
# ?-format? Output format. Must be one of "image" or "colors"
# 'image' will return the name of a Tk image.
# 'colors' will return a list of pixel values
# ?-image? If output is image, use this as the name of Tk image
# created
#
# RETURNS:
# pixel data as a list that could be passed to 'image create'
#
proc ::ico::getIconByName {file name args} {
set format image
set image {}
parseOpts {type format image} $args
if {![info exists type]} {
# $type wasn't specified - get it from the extension
set type [fileext $file]
}
if {![llength [info commands getRawIconData$type]]} {
return -code error "unsupported file format $type"
}
# ICODATA is a pure data type - not a real file
if {$type ne "ICODATA"} {
set file [file normalize $file]
}
set colors [eval [linsert [getRawIconData$type $file $name] 0 getIconAsColorList]]
if {$format eq "image"} {
return [createImage $colors $image]
}
return $colors
}
# getFileIcon --
#
# Get the registered icon for the file under Windows
#
# ARGS:
# file File to get icon for.
#
# optional arguments and return values are the same as getIcon
#
proc ::ico::getFileIcon {file args} {
set icon "%SystemRoot%\\System32\\shell32.dll,0"
if {[file isdirectory $file] || $file == "Folder"} {
if {![catch {registry get HKEY_CLASSES_ROOT\\Folder\\DefaultIcon ""} reg]} {
set icon $reg
}
} else {
set ext [file extension $file]
if {![catch {registry get HKEY_CLASSES_ROOT\\$ext ""} doctype]} {
if {![catch {registry get HKEY_CLASSES_ROOT\\$doctype\\CLSID ""} clsid] && \
![catch {registry get HKEY_CLASSES_ROOT\\CLSID\\$clsid\\DefaultIcon ""} reg]} {
set icon $reg
} elseif {![catch {registry get HKEY_CLASSES_ROOT\\$doctype\\DefaultIcon ""} reg]} {
set icon $reg
}
}
}
set index [lindex [split $icon ,] 1]
set icon [lindex [split $icon ,] 0]
if {$index == ""} { set index 0 }
set icon [string trim $icon "@'\" "]
while {[regexp -nocase {%([a-z]+)%} $icon -> var]} {
set icon [string map [list %$var% $::env($var)] $icon]
}
set icon [string map [list %1 $file] $icon]
if {$index < 0} {
if {![catch {eval [list getIcon $icon [string trimleft $index -]] $args} output]} {
return $output
}
set index 0
}
return [eval [list getIcon $icon [lindex [icons $icon] $index]] $args]
}
# writeIcon --
#
# Overwrite write image in file with depth/pixel data
#
# ARGS:
# file File to extract icon info from.
# name Name of image in the file to use. The name is the first element
# in the sublists returned by iconMembers.
# bpp bit depth of icon we are writing
# data Either pixel color data (as returned by getIcon -format color)
# or the name of a Tk image.
# ?-type? Type of file. If not specified, it is derived from
# the file extension. Currently recognized types are
# EXE, DLL, ICO and ICL
#
# RETURNS:
# nothing
#
proc ::ico::writeIcon {file name bpp data args} {
parseOpts type $args
if {![info exists type]} {
# $type wasn't specified - get it from the extension
set type [fileext $file]
}
if {![llength [info commands writeIcon$type]]} {
return -code error "unsupported file format $type"
}
if {[llength $data] == 1} {
set data [getColorListFromImage $data]
} elseif {[lsearch -glob [join $data] #*] > -1} {
set data [translateColors $data]
}
if {$bpp != 1 && $bpp != 4 && $bpp != 8 && $bpp != 24 && $bpp != 32} {
return -code error "invalid color depth"
}
set palette {}
if {$bpp <= 8} {
set palette [getPaletteFromColors $data]
if {[lindex $palette 0] > (1 << $bpp)} {
return -code error "specified color depth too low"
}
set data [lindex $palette 2]
set palette [lindex $palette 1]
append palette [string repeat \000 [expr {(1 << ($bpp + 2)) - [string length $palette]}]]
}
set and [getAndMaskFromColors $data]
set xor [getXORFromColors $bpp $data]
# writeIcon$type file index w h bpp palette xor and
writeIcon$type [file normalize $file] $name \
[llength [lindex $data 0]] [llength $data] $bpp $palette $xor $and
}
# copyIcon --
#
# Copies an icon directly from one file to another
#
# ARGS:
# file1 File to extract icon info from.
# name1 Name of image in the file to use. The name is the first element
# in the sublists returned by iconMembers.
# file2 File to write icon to.
# name2 Name of image in the file to use. The name is the first element
# in the sublists returned by iconMembers.
# ?-fromtype? Type of source file. If not specified, it is derived from
# the file extension. Currently recognized types are
# EXE, DLL, ICO, ICL, BMP, and ICODATA
# ?-totype? Type of destination file. If not specified, it is derived from
# the file extension. Currently recognized types are
# EXE, DLL, ICO, ICL, BMP, and ICODATA
#
# RETURNS:
# nothing
#
proc ::ico::copyIcon {file1 name1 file2 name2 args} {
parseOpts {fromtype totype} $args
if {![info exists fromtype]} {
# $type wasn't specified - get it from the extension
set fromtype [fileext $file1]
}
if {![info exists totype]} {
# $type wasn't specified - get it from the extension
set totype [fileext $file2]
}
if {![llength [info commands writeIcon$totype]]} {
return -code error "unsupported file format $totype"
}
if {![llength [info commands getRawIconData$fromtype]]} {
return -code error "unsupported file format $fromtype"
}
set src [getRawIconData$fromtype $file1 $name1]
writeIcon $file2 $name2 [lindex $src 2] [eval getIconAsColorList $src] -type $totype
}
#
# transparentColor --
#
# Turns on transparency for all pixels in the image that match the color
#
# ARGS:
# img Name of the Tk image to modify, or an image in color list format
# color Color in #hex format which will be made transparent
#
# RETURNS:
# the data or image after modification
#
proc ::ico::transparentColor {img color} {
if {[llength $img] == 1} {
package require Tk
if {[string match "#*" $color]} {
set color [scan $color "#%2x%2x%2x"]
}
set w [image width $img]
set h [image height $img]
for {set y 0} {$y < $h} {incr y} {
for {set x 0} {$x < $w} {incr x} {
if {[$img get $x $y] eq $color} {$img transparency set $x $y 1}
}
}
} else {
set y 0
foreach row $img {
set x 0
foreach px $row {
if {$px == $color} {lset img $y $x {}}
incr x
}
incr y
}
}
return $img
}
#
# clearCache --
#
# Clears the cache of icon offsets
#
# ARGS:
# file optional filename
#
#
# RETURNS:
# nothing
#
proc ::ico::clearCache {{file {}}} {
variable RES
if {$file ne ""} {
array unset RES $file,*
} else {
unset RES
array set RES {}
}
}
#
# EXEtoICO --
#
# Convert all icons found in exefile into regular icon files
#
# ARGS:
# exeFile Input EXE filename
# ?icoDir? Output ICO directory. Default is the
# same directory exeFile is located in
#
# RETURNS:
# nothing
#
proc ::ico::EXEtoICO {exeFile {icoDir {}}} {
variable RES
set file [file normalize $exeFile]
FindResources $file
if {$icoDir == ""} { set icoDir [file dirname $file] }
set fh [open $file]
fconfigure $fh -eofchar {} -encoding binary -translation lf
foreach group $RES($file,group,names) {
set dir {}
set data {}
foreach icon $RES($file,group,$group,members) {
seek $fh $RES($file,icon,$icon,offset) start
set ico $RES($file,icon,$icon,data)
eval [list lappend dir] $ico
append data [read $fh [eval calcSize $ico 40]]
}
# write them out to a file
set ifh [open [file join $icoDir [file tail $exeFile]-$group.ico] w+]
fconfigure $ifh -eofchar {} -encoding binary -translation lf
bputs $ifh sss 0 1 [llength $RES($file,group,$group,members)]
set offset [expr {6 + ([llength $RES($file,group,$group,members)] * 16)}]
foreach {w h bpp} $dir {
set len [calcSize $w $h $bpp 40]
lappend fix $offset $len
bputs $ifh ccccssii $w $h [expr {$bpp <= 8 ? 1 << $bpp : 0}] 0 1 $bpp $len $offset
set offset [expr {$offset + $len}]
}
puts -nonewline $ifh $data
foreach {offset size} $fix {
seek $ifh [expr {$offset + 20}] start
bputs $ifh i $size
}
close $ifh
}
close $fh
}
##
## Internal helper commands.
## Some may be appropriate for exposing later, but would need docs
## and make sure they "fit" in the API.
##
# gets the file extension as we use it internally (upper case, no '.')
proc ::ico::fileext {file} {
return [string trimleft [string toupper [file extension $file]] .]
}
# helper proc to parse optional arguments to some of the public procs
proc ::ico::parseOpts {acc opts} {
foreach {key val} $opts {
set key [string trimleft $key -]
if {[lsearch -exact $acc $key] >= 0} {
upvar $key $key
set $key $val
} elseif {$key ne ""} {
return -code error "unknown option \"$key\": must be one of $acc"
}
}
}
# formats a single color from a binary decimal list format to the #hex format
proc ::ico::formatColor {r g b} {
format "#%02X%02X%02X" [scan $r %c] [scan $g %c] [scan $b %c]
}
# translates a color list from the #hex format to the decimal list format
# #0000FF {0 0 255}
proc ::ico::translateColors {colors} {
set new {}
foreach line $colors {
set tline {}
foreach x $line {
if {$x eq ""} {lappend tline {}; continue}
lappend tline [scan $x "#%2x%2x%2x"]
}
set new [linsert $new 0 $tline]
}
return $new
}
# reads a 32 bit signed integer from the filehandle
proc ::ico::getdword {fh} {
binary scan [read $fh 4] i* tmp
return $tmp
}
proc ::ico::getword {fh} {
binary scan [read $fh 2] s* tmp
return $tmp
}
proc ::ico::getulong {fh} {
binary scan [read $fh 4] i tmp
return [format %u $tmp]
}
proc ::ico::getushort {fh} {
binary scan [read $fh 2] s tmp
return [expr {$tmp & 0x0000FFFF}]
}
proc ::ico::bputs {fh format args} {
puts -nonewline $fh [eval [list binary format $format] $args]
}
proc ::ico::createImage {colors {name {}}} {
package require Tk
set h [llength $colors]
set w [llength [lindex $colors 0]]
if {$name ne ""} {
set img [image create photo $name -width $w -height $h]
} else {
set img [image create photo -width $w -height $h]
}
if {0} {
# if image supported "" colors as transparent pixels,
# we could use this much faster op
$img put -to 0 0 $colors
} else {
for {set x 0} {$x < $w} {incr x} {
for {set y 0} {$y < $h} {incr y} {
set clr [lindex $colors $y $x]
if {$clr ne ""} {
$img put -to $x $y $clr
}
}
}
}
return $img
}
# return a list of colors in the #hex format from raw icon data
# returned by readDIB
proc ::ico::getIconAsColorList {w h bpp palette xor and} {
# Create initial empty color array that we'll set indices in
set colors {}
set row {}
set empty {}
for {set x 0} {$x < $w} {incr x} { lappend row $empty }
for {set y 0} {$y < $h} {incr y} { lappend colors $row }
set x 0
set y [expr {$h-1}]
if {$bpp == 1} {
binary scan $xor B* xorBits
foreach i [split $xorBits {}] a [split $and {}] {
if {$x == $w} { set x 0; incr y -1 }
if {$a == 0} {
lset colors $y $x [lindex $palette $i]
}
incr x
}
} elseif {$bpp == 4} {
variable BITS
binary scan $xor B* xorBits
set i 0
foreach a [split $and {}] {
if {$x == $w} { set x 0; incr y -1 }
if {$a == 0} {
set bits [string range $xorBits $i [expr {$i+3}]]
lset colors $y $x [lindex $palette $BITS($bits)]
}
incr i 4
incr x
}
} elseif {$bpp == 8} {
foreach i [split $xor {}] a [split $and {}] {
if {$x == $w} { set x 0; incr y -1 }
if {$a == 0} {
lset colors $y $x [lindex $palette [scan $i %c]]
}
incr x
}
} elseif {$bpp == 16} {
variable BITS
binary scan $xor b* xorBits
set i 0
foreach a [split $and {}] {
if {$x == $w} { set x 0; incr y -1 }
if {$a == 0} {
set b1 [string range $xorBits $i [expr {$i+4}]]
set b2 [string range $xorBits [expr {$i+5}] [expr {$i+9}]]
set b3 [string range $xorBits [expr {$i+10}] [expr {$i+14}]]
lset colors $y $x "#$BITS($b3)$BITS($b2)$BITS($b1)"
}
incr i 16
incr x
}
} elseif {$bpp == 24} {
foreach {b g r} [split $xor {}] a [split $and {}] {
if {$x == $w} { set x 0; incr y -1 }
if {$a == 0} {
lset colors $y $x [formatColor $r $g $b]
}
incr x
}
} elseif {$bpp == 32} {
foreach {b g r n} [split $xor {}] a [split $and {}] {
if {$x == $w} { set x 0; incr y -1 }
if {$a == 0} {
lset colors $y $x [formatColor $r $g $b]
}
incr x
}
}
return $colors
}
# creates a binary formatted AND mask by reading a list of colors in the decimal list format
# and checking for empty colors which designate transparency
proc ::ico::getAndMaskFromColors {colors} {
set and {}
foreach line $colors {
set l {}
foreach x $line {append l [expr {$x eq ""}]}
append l [string repeat 0 [expr {[string length $l] % 32}]]
foreach {a b c d e f g h} [split $l {}] {
append and [binary format B8 $a$b$c$d$e$f$g$h]
}
}
return $and
}
# creates a binary formatted XOR mask in the specified depth format from
# a list of colors in the decimal list format
proc ::ico::getXORFromColors {bpp colors} {
set xor {}
if {$bpp == 1} {
foreach line $colors {
foreach {a b c d e f g h} $line {
foreach x {a b c d e f g h} {
if {[set $x] == ""} {set $x 0}
}
binary scan $a$b$c$d$e$f$g$h bbbbbbbb h g f e d c b a
append xor [binary format b8 $a$b$c$d$e$f$g$h]
}
}
} elseif {$bpp == 4} {
foreach line $colors {
foreach {a b} $line {
if {$a == ""} {set a 0}
if {$b == ""} {set b 0}
binary scan $a$b b4b4 b a
append xor [binary format b8 $a$b]
}
}
} elseif {$bpp == 8} {
foreach line $colors {
foreach x $line {
if {$x == ""} {set x 0}
append xor [binary format c $x]
}
}
} elseif {$bpp == 24} {
foreach line $colors {
foreach x $line {
if {![llength $x]} {
append xor [binary format ccc 0 0 0]
} else {
foreach {a b c n} $x {
append xor [binary format ccc $c $b $a]
}
}
}
}
} elseif {$bpp == 32} {
foreach line $colors {
foreach x $line {
if {![llength $x]} {
append xor [binary format cccc 0 0 0 0]
} else {
foreach {a b c n} $x {
if {$n == ""} {set n 0}
append xor [binary format cccc $c $b $a $n]
}
}
}
}
}
return $xor
}
# translates a Tk image into a list of colors in the {r g b} format
# one element per pixel and {} designating transparent
# used by writeIcon when writing from a Tk image
proc ::ico::getColorListFromImage {img} {
package require Tk
set w [image width $img]
set h [image height $img]
set r {}
for {set y [expr $h - 1]} {$y > -1} {incr y -1} {
set l {}
for {set x 0} {$x < $w} {incr x} {
if {[$img transparency get $x $y]} {
lappend l {}
} else {
lappend l [$img get $x $y]
}
}
lappend r $l
}
return $r
}
# creates a palette from a list of colors in the decimal list format
# a palette consists of 3 values, the number of colors, the palette entry itself,
# and the color list transformed to point to palette entries instead of color names
# the palette entry itself is stored as 32bpp in "G B R padding" order
proc ::ico::getPaletteFromColors {colors} {
set palette "\x00\x00\x00\x00"
array set tpal {{0 0 0} 0}
set new {}
set i 1
foreach line $colors {
set tline {}
foreach x $line {
if {$x eq ""} {lappend tline {}; continue}
if {![info exists tpal($x)]} {
foreach {a b c n} $x {
append palette [binary format cccc $c $b $a 0]
}
set tpal($x) $i
incr i
}
lappend tline $tpal($x)
}
lappend new $tline
}
return [list $i $palette $new]
}
# calculate byte size of an icon.
# often passed $w twice because $h is double $w in the binary data
proc ::ico::calcSize {w h bpp {offset 0}} {
set s [expr {int(($w*$h) * ($bpp/8.0)) \
+ ((($w*$h) + ($h*($w%32)))/8) + $offset}]
if {$bpp <= 8} { set s [expr {$s + (1 << ($bpp + 2))}] }
return $s
}
# read a Device Independent Bitmap from the current offset, return:
# {width height depth palette XOR_mask AND_mask}
proc ::ico::readDIB {fh} {
binary scan [read $fh 16] x4iix2s w h bpp
set h [expr {$h / 2}]
seek $fh 24 current
set palette [list]
if {$bpp == 1 || $bpp == 4 || $bpp == 8} {
set colors [read $fh [expr {1 << ($bpp + 2)}]]
foreach {b g r x} [split $colors {}] {
lappend palette [formatColor $r $g $b]
}
} elseif {$bpp == 16 || $bpp == 24 || $bpp == 32} {
# do nothing here
} else {
return -code error "unsupported color depth: $bpp"
}
set xor [read $fh [expr {int(($w * $h) * ($bpp / 8.0))}]]
set and1 [read $fh [expr {(($w * $h) + ($h * ($w % 32))) / 8}]]
set and {}
set row [expr {((($w - 1) / 32) * 32 + 32) / 8}]
set len [expr {$row * $h}]
for {set i 0} {$i < $len} {incr i $row} {
binary scan [string range $and1 $i [expr {$i + $row}]] B$w tmp
append and $tmp
}
return [list $w $h $bpp $palette $xor $and]
}
# read a Device Independent Bitmap from raw data, return:
# {width height depth palette XOR_mask AND_mask}
proc ::ico::readDIBFromData {data loc} {
# Read info from location
binary scan $data @${loc}x4iix2s w h bpp
set h [expr {$h / 2}]
# Move over w/h/bpp info + magic offset to start of DIB
set cnt [expr {$loc + 16 + 24}]
set palette [list]
if {$bpp == 1 || $bpp == 4 || $bpp == 8} {
# Could do: [binary scan $data @${cnt}c$len colors]
# and iter over colors, but this is more consistent with $fh version
set len [expr {1 << ($bpp + 2)}]
set colors [string range $data $cnt [expr {$cnt + $len - 1}]]
foreach {b g r x} [split $colors {}] {
lappend palette [formatColor $r $g $b]
}
incr cnt $len
} elseif {$bpp == 16 || $bpp == 24 || $bpp == 32} {
# do nothing here
} else {
return -code error "unsupported color depth: $bpp"
}
# Use -1 to account for string range inclusiveness
set end [expr {$cnt + int(($w * $h) * ($bpp / 8.0)) - 1}]
set xor [string range $data $cnt $end]
set and1 [string range $data [expr {$end + 1}] \
[expr {$end + ((($w * $h) + ($h * ($w % 32))) / 8) - 1}]]
set and {}
set row [expr {((($w - 1) / 32) * 32 + 32) / 8}]
set len [expr {$row * $h}]
for {set i 0} {$i < $len} {incr i $row} {
# Has to be decoded by row, in order
binary scan [string range $and1 $i [expr {$i + $row}]] B$w tmp
append and $tmp
}
return [list $w $h $bpp $palette $xor $and]
}
proc ::ico::getIconListICO {file} {
set fh [open $file r]
fconfigure $fh -eofchar {} -encoding binary -translation lf
if {"[getword $fh] [getword $fh]" ne "0 1"} {
return -code error "not an icon file"
}
close $fh
return 0
}
proc ::ico::getIconListICODATA {data} {
if {[binary scan $data sss h1 h2 num] != 3 || $h1 != 0 || $h2 != 1} {
return -code error "not icon data"
}
return 0
}
proc ::ico::getIconListBMP {file} {
set fh [open $file]
if {[read $fh 2] != "BM"} { close $fh; return -code error "not a BMP file" }
close $fh
return 0
}
proc ::ico::getIconListEXE {file} {
variable RES
set file [file normalize $file]
if {[FindResources $file] > -1} {
return $RES($file,group,names)
} else {
return ""
}
}
# returns a list of images that make up the named icon
# as tuples {name width height bpp}. Called by [iconMembers]
proc ::ico::getIconMembersICO {file name} {
variable RES
if {$name ne "0"} { return -code error "no icon \"$name\"" }
set file [file normalize $file]
if {[info exists RES($file,group,$name,members)]} {
set ret ""
foreach x $RES($file,group,$name,members) {
lappend ret [linsert $RES($file,icon,$x,data) 0 $x]
}
return $ret
}
set fh [open $file r]
fconfigure $fh -eofchar {} -encoding binary -translation lf
# both words must be read to keep in sync with later reads
if {"[getword $fh] [getword $fh]" ne "0 1"} {
close $fh
return -code error "not an icon file"
}
set ret ""
set num [getword $fh]
for {set i 0} {$i < $num} {incr i} {
set info ""
lappend RES($file,group,$name,members) $i
lappend info [scan [read $fh 1] %c] [scan [read $fh 1] %c]
set bpp [scan [read $fh 1] %c]
if {$bpp == 0} {
set orig [tell $fh]
seek $fh 9 current
seek $fh [expr {[getdword $fh] + 14}] start
lappend info [getword $fh]
seek $fh $orig start
} else {
lappend info [expr {int(sqrt($bpp))}]
}
lappend ret [linsert $info 0 $i]
set RES($file,icon,$i,data) $info
seek $fh 13 current
}
close $fh
return $ret
}
# returns a list of images that make up the named icon
# as tuples {name width height bpp}. Called by [iconMembers]
proc ::ico::getIconMembersICODATA {data} {
if {[binary scan $data sss h1 h2 num] != 3 || $h1 != 0 || $h2 != 1} {
return -code error "not icon data"
}
set r {}
set cnt 6
for {set i 0} {$i < $num} {incr i} {
if {[binary scan $data @${cnt}ccc w h bpp] != 3} {
return -code error "error decoding icon data"
}
incr cnt 3
set info [list $i $w $h]
if {$bpp == 0} {
set off [expr {$cnt + 9}]
binary scan $data @${off}i off
incr off 14
binary scan $data @${off}s bpp
lappend info $bpp
} else {
lappend info [expr {int(sqrt($bpp))}]
}
lappend r $info
incr cnt 13
}
return $r
}
# returns a list of images that make up the named icon
# as tuples {name width height bpp}. Called by [iconMembers]
proc ::ico::getIconMembersBMP {file {name 0}} {
if {$name ne "0"} { return -code error "no icon \"$name\"" }
set fh [open $file]
if {[read $fh 2] != "BM"} { close $fh; return -code error "not a BMP file" }
seek $fh 14 start
binary scan [read $fh 16] x4iix2s w h bpp
close $fh
return [list 1 $w $h $bpp]
}
# returns a list of images that make up the named icon
# as tuples {name width height bpp}. Called by [iconMembers]
proc ::ico::getIconMembersEXE {file name} {
variable RES
set file [file normalize $file]
FindResources $file
if {![info exists RES($file,group,$name,members)]} { return -code error "no icon \"$name\"" }
set ret ""
foreach x $RES($file,group,$name,members) {
lappend ret [linsert $RES($file,icon,$x,data) 0 $x]
}
return $ret
}
# returns an icon in the form:
# {width height depth palette xor_mask and_mask}
proc ::ico::getRawIconDataICO {file name} {
set fh [open $file r]
fconfigure $fh -eofchar {} -encoding binary -translation lf
# both words must be read to keep in sync with later reads
if {"[getword $fh] [getword $fh]" ne "0 1"} {
close $fh
return -code error "not an icon file"
}
set num [getword $fh]
if {![string is integer -strict $name] || $name < 0 || $name >= $num} { return -code error "no icon \"$name\"" }
seek $fh [expr {(16 * $name) + 12}] current
seek $fh [getdword $fh] start
# readDIB returns: {w h bpp palette xor and}
set dib [readDIB $fh]
close $fh
return $dib
}
# returns an icon in the form:
# {width height depth palette xor_mask and_mask}
proc ::ico::getRawIconDataICODATA {data name} {
if {[binary scan $data sss h1 h2 num] != 3 || $h1 != 0 || $h2 != 1} {
return -code error "not icon data"
}
if {![string is integer -strict $name] || $name < 0 || $name >= $num} {
return -code error "No icon $name"
}
# Move to ico location
set cnt [expr {6 + (16 * $name) + 12}]
binary scan $data @${cnt}i loc
# readDIB returns: {w h bpp palette xor and}
set dib [readDIBFromData $data $loc]
return $dib
}
# returns an icon in the form:
# {width height depth palette xor_mask and_mask}
proc ::ico::getRawIconDataBMP {file {name 1}} {
if {$name ne "1"} {return -code error "No icon \"$name\""}
set fh [open $file]
if {[read $fh 2] != "BM"} { close $fh; return -code error "not a BMP file" }
seek $fh 14 start
binary scan [read $fh 16] x4iix2s w h bpp
seek $fh 24 current
set palette [list]
if {$bpp == 1 || $bpp == 4 || $bpp == 8} {
set colors [read $fh [expr {1 << ($bpp + 2)}]]
foreach {b g r x} [split $colors {}] {
lappend palette [formatColor $r $g $b]
}
} elseif {$bpp == 16 || $bpp == 24 || $bpp == 32} {
# do nothing here
} else {
return -code error "unsupported color depth: $bpp"
}
set xor [read $fh [expr {int(($w * $h) * ($bpp / 8.0))}]]
set and [string repeat 0 [expr {$w * $h}]]
close $fh
return [list $w $h $bpp $palette $xor $and]
}
# returns an icon in the form:
# {width height depth palette xor_mask and_mask}
proc ::ico::getRawIconDataEXE {file name} {
variable RES
set file [file normalize $file]
FindResources $file
if {![info exists RES($file,icon,$name,offset)]} { error "No icon \"$name\"" }
set fh [open $file]
fconfigure $fh -eofchar {} -encoding binary -translation lf
seek $fh $RES($file,icon,$name,offset) start
# readDIB returns: {w h bpp palette xor and}
set dib [readDIB $fh]
close $fh
return $dib
}
proc ::ico::writeIconICO {file name w h bpp palette xor and} {
if {![file exists $file]} {
set fh [open $file w+]
fconfigure $fh -eofchar {} -encoding binary -translation lf
set num 0
} else {
set fh [open $file r+]
fconfigure $fh -eofchar {} -encoding binary -translation lf
if {"[getword $fh] [getword $fh]" ne "0 1"} {
close $fh
return -code error "not an icon file"
}
set num [getword $fh]
seek $fh [expr {6 + (16 * $num)}] start
}
set size [expr {[string length $palette] + [string length $xor] + [string length $and]}]
set newicon [binary format iiissiiiiii 40 $w [expr {$h * 2}] 1 $bpp 0 $size 0 0 0 0]$palette$xor$and
set data {}
for {set i 0} {$i < $num} {incr i} {
binary scan [read $fh 24] ix16i a b
seek $fh -24 current
lappend data [read $fh [expr {$a + $b}]]
}
if {![string is integer -strict $name] || $name < 0 || $name >= $num} {
set name [llength $data]
lappend data $newicon
} else {
set data [lreplace $data $name $name $newicon]
}
set num [llength $data]
seek $fh 0 start
bputs $fh sss 0 1 $num
set offset [expr {6 + (16 * $num)}]
foreach x $data {
binary scan $x x4iix2s w h bpp
set len [string length $x]
# use original height in icon table header
bputs $fh ccccssii $w [expr {$h / 2}] [expr {$bpp <= 8 ? 1 << $bpp : 0}] 0 0 $bpp $len $offset
incr offset $len
}
puts -nonewline $fh [join $data {}]
close $fh
return $name
}
proc ::ico::writeIconICODATA {file name w h bpp palette xor and} {
upvar 2 [file tail $file] input
if {![info exists input] || ([binary scan $input sss h1 h2 num] != 3 || $h1 != 0 || $h2 != 1)} {
set num 0
}
set size [expr {[string length $palette] + [string length $xor] + [string length $and]}]
set newicon [binary format iiissiiiiii 40 $w [expr {$h * 2}] 1 $bpp 0 $size 0 0 0 0]$palette$xor$and
set readpos [expr {6 + (16 * $num)}]
set data {}
for {set i 0} {$i < $num} {incr i} {
binary scan $input @{$readpos}ix16i a b
lappend data [string range $data $readpos [expr {$readpos + $a + $b}]]
incr readpos [expr {$readpos + $a + $b}]
}
if {![string is integer -strict $name] || $name < 0 || $name >= $num} {
set name [llength $data]
lappend data $newicon
} else {
set data [lreplace $data $name $name $newicon]
}
set num [llength $data]
set new [binary format sss 0 1 $num]
set offset [expr {6 + (16 * $num)}]
foreach x $data {
binary scan $x x4iix2s w h bpp
set len [string length $x]
# use original height in icon table header
append new [binary format ccccssii $w [expr {$h / 2}] [expr {$bpp <= 8 ? 1 << $bpp : 0}] 0 0 $bpp $len $offset]
incr offset $len
}
set input $new
append input [join $data {}]
return $name
}
proc ::ico::writeIconBMP {file name w h bpp palette xor and} {
set fh [open $file w+]
fconfigure $fh -eofchar {} -encoding binary -translation lf
set size [expr {[string length $palette] + [string length $xor]}]
# bitmap header: magic, file size, reserved, reserved, offset of bitmap data
bputs $fh a2issi BM [expr {14 + 40 + $size}] 0 0 54
bputs $fh iiissiiiiii 40 $w $h 1 $bpp 0 $size 0 0 0 0
puts -nonewline $fh $palette$xor
close $fh
}
proc ::ico::writeIconEXE {file name w h bpp palette xor and} {
variable RES
set file [file normalize $file]
set members [getIconMembersEXE $file $name]
if {![info exists RES($file,icon,$name,data)]} {
return -code error "no icon \"$name\""
}
if {![string match "* $w $h $bpp" $RES($file,icon,$name,data)]} {
return -code error "icon format differs from original"
}
set fh [open $file r+]
fconfigure $fh -eofchar {} -encoding binary -translation lf
seek $fh [expr {$RES($file,icon,$name,offset) + 40}] start
puts -nonewline $fh $palette$xor$and
close $fh
}
proc ::ico::FindResources {file} {
variable RES
if {[info exists RES($file,group,names)]} {
return [llength $RES($file,group,names)]
}
set fh [open $file]
fconfigure $fh -eofchar {} -encoding binary -translation lf
if {[read $fh 2] ne "MZ"} {
close $fh
return -code error "unknown file format"
}
seek $fh 60 start
seek $fh [getword $fh] start
set sig [read $fh 4]
seek $fh -4 current
if {$sig eq "PE\000\000"} {
return [FindResourcesPE $fh $file]
} elseif {[string match NE* $sig]} {
return [FindResourcesNE $fh $file]
} else {
return -code error "unknown file format"
}
}
# parse the resource table of 16 bit windows files for icons
proc ::ico::FindResourcesNE {fh file} {
variable RES
seek $fh 36 current
seek $fh [expr {[getword $fh] - 38}] current
set base [tell $fh]
set shift [expr {int(pow(2, [getushort $fh]))}]
while {[set type [expr {[getushort $fh] & 0x7fff}]] != 0} {
set num [getushort $fh]
if {$type != 3 && $type != 14} {
seek $fh [expr {($num * 12) + 4}] current
continue
}
set type [string map {3 icon 14 group} $type]
seek $fh 4 current
for {set i 0} {$i < $num} {incr i} {
set offset [expr {[getushort $fh] * $shift}]
seek $fh 4 current
set name [getNEResName $fh $base [getushort $fh]]
set RES($file,$type,$name,offset) $offset
lappend RES($file,$type,names) $name
seek $fh 4 current
}
}
if {[array names RES $file,*] == ""} {
close $fh
return -1
}
foreach x [array names RES $file,group,*,offset] {
seek $fh [expr {$RES($x) + 4}] start
binary scan [read $fh 2] s a
set x [lindex [split $x ,] 2]
for {set i 0} {$i < $a} {incr i} {
binary scan [read $fh 14] x12s n
lappend RES($file,group,$x,members) $n
}
}
foreach x [array names RES $file,icon,*,offset] {
seek $fh [expr {$RES($x)}] start
set x [lindex [split $x ,] 2]
binary scan [read $fh 16] x4iix2s w h bpp
set RES($file,icon,$x,data) [list $w [expr {$h / 2}] $bpp]
}
close $fh
return [llength $RES($file,group,names)]
}
proc ::ico::getNEResName {fh base data} {
if {$data == 0} {
return 0
}
binary scan $data b* tmp
if {[string index $tmp 0] == 0} {
set cur [tell $fh]
seek $fh [expr {$data + $base}] start
binary scan [read $fh 1] c len
set name [read $fh $len]
seek $fh $cur start
return $name
} else {
return [expr {$data & 0x7fff}]
}
}
# parse the resource tree of 32 bit windows files for icons
proc ::ico::FindResourcesPE {fh file} {
variable RES
# find the .rsrc section by reading the coff header
binary scan [read $fh 24] x6sx12s sections headersize
seek $fh $headersize current
for {set i 0} {$i < $sections} {incr i} {
binary scan [read $fh 40] a8x4ix4i type baserva base
if {[string match .rsrc* $type]} {break}
}
# no resource section found = no icons
if {![string match .rsrc* $type]} {
close $fh
return -1
}
seek $fh $base start
seek $fh 12 current
# number of entries in the resource table. each one is a different resource type
set entries [expr {[getushort $fh] + [getushort $fh]}]
for {set i 0} {$i < $entries} {incr i} {
set type [getulong $fh]
set offset [expr {[getulong $fh] & 0x7fffffff}]
if {$type != 3 && $type != 14} {continue}
set type [string map {3 icon 14 group} $type]
set cur [tell $fh]
seek $fh [expr {$base + $offset + 12}] start
set entries2 [expr {[getushort $fh] + [getushort $fh]}]
for {set i2 0} {$i2 < $entries2} {incr i2} {
set name [getPEResName $fh $base [getulong $fh]]
lappend RES($file,$type,names) $name
set offset [expr {[getulong $fh] & 0x7fffffff}]
set cur2 [tell $fh]
seek $fh [expr {$offset + $base + 12}] start
set entries3 [expr {[getushort $fh] + [getushort $fh]}]
for {set i3 0} {$i3 < $entries3} {incr i3} {
seek $fh 4 current
set offset [expr {[getulong $fh] & 0x7fffffff}]
set cur3 [tell $fh]
seek $fh [expr {$offset + $base}] start
set rva [getulong $fh]
set RES($file,$type,$name,offset) [expr {$rva - $baserva + $base}]
seek $fh $cur3 start
}
seek $fh $cur2 start
}
seek $fh $cur start
}
if {[array names RES $file,*] == ""} {
close $fh
return -1
}
foreach x [array names RES $file,group,*,offset] {
seek $fh [expr {$RES($x) + 4}] start
binary scan [read $fh 2] s a
set x [lindex [split $x ,] 2]
for {set i 0} {$i < $a} {incr i} {
binary scan [read $fh 14] x12s n
lappend RES($file,group,$x,members) $n
}
}
foreach x [array names RES $file,icon,*,offset] {
seek $fh [expr {$RES($x)}] start
set x [lindex [split $x ,] 2]
binary scan [read $fh 16] x4iix2s w h bpp
set RES($file,icon,$x,data) [list $w [expr {$h / 2}] $bpp]
}
close $fh
return [llength $RES($file,group,names)]
}
proc ::ico::getPEResName {fh start data} {
if {($data & 0x80000000) != 0} {
set cur [tell $fh]
seek $fh [expr {($data & 0x7fffffff) + $start}] start
set len [getushort $fh]
set name [read $fh [expr {$len * 2}]]
seek $fh $cur start
return [encoding convertfrom unicode $name]
} else {
return $data
}
}
interp alias {} ::ico::getIconListDLL {} ::ico::getIconListEXE
interp alias {} ::ico::getIconMembersDLL {} ::ico::getIconMembersEXE
interp alias {} ::ico::getRawIconDataDLL {} ::ico::getRawIconDataEXE
interp alias {} ::ico::writeIconDLL {} ::ico::writeIconEXE
interp alias {} ::ico::getIconListICL {} ::ico::getIconListEXE
interp alias {} ::ico::getIconMembersICL {} ::ico::getIconMembersEXE
interp alias {} ::ico::getRawIconDataICL {} ::ico::getRawIconDataEXE
interp alias {} ::ico::writeIconICL {} ::ico::writeIconEXE
package provide ico 1.0.3
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