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Diffstat (limited to 'lib/stcolor.ps')
| -rw-r--r-- | lib/stcolor.ps | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/lib/stcolor.ps b/lib/stcolor.ps new file mode 100644 index 000000000..105a6ec39 --- /dev/null +++ b/lib/stcolor.ps @@ -0,0 +1,169 @@ +% Copyright (C) 2001-2012 Artifex Software, Inc. +% All Rights Reserved. +% +% This software is provided AS-IS with no warranty, either express or +% implied. +% +% This software is distributed under license and may not be copied, +% modified or distributed except as expressly authorized under the terms +% of the license contained in the file LICENSE in this distribution. +% +% Refer to licensing information at http://www.artifex.com or contact +% Artifex Software, Inc., 7 Mt. Lassen Drive - Suite A-134, San Rafael, +% CA 94903, U.S.A., +1(415)492-9861, for further information. +% + +% stcolor.ps +% Epson Stylus-Color Printer-Driver + +% The purpose of this file is to configure the stcolor-printer driver + +% +% It is useless and dangerous to interpret the following code with anything +% else than Ghostscript, so this condition is verified first. If this fails +% a message is send to the output. If this message bothers you, remove it, +% but I prefer to know why the device-setup failed. + +statusdict begin product end +dup (Ghostscript) eq 1 index (Artifex Ghostscript) eq or +exch (AFPL Ghostscript) eq or{ + +% fetch the current device-parameters this is specific for Ghostscript. + + /STCold currentdevice getdeviceprops .dicttomark def + +% Any Ghostscript-Driver has a Name, verify that the selected device is +% stcolor, otherwise nothing than another message will be produced. + + STCold /Name get (stcolor) eq { + +% +% The main thing this file does, is to establish transfer-functions. +% Here are two predefined arrays for 360x360Dpi and for 720x720DpI. +% If resolution is 360x720 or 720x360 the average is used. You may +% want to define other arrays here. +% + + /STCdeftransfer [ 0.0 1.0 ] def + + /STCKtransfer360 [ + 0.0000 0.0034 0.0185 0.0377 0.0574 0.0769 0.0952 0.1147 + 0.1337 0.1540 0.1759 0.1985 0.2209 0.2457 0.2706 0.2949 + 0.3209 0.3496 0.3820 0.4145 0.4505 0.4907 0.5344 0.5840 + 0.6445 0.7093 0.8154 0.9816 0.9983 0.9988 0.9994 1.0000 + ] def + + /STCKtransfer720 [ + 0.0000 0.0011 0.0079 0.0151 0.0217 0.0287 0.0354 0.0425 + 0.0492 0.0562 0.0633 0.0700 0.0766 0.0835 0.0900 0.0975 + 0.1054 0.1147 0.1243 0.1364 0.1489 0.1641 0.1833 0.2012 + 0.2217 0.2492 0.2814 0.3139 0.3487 0.3996 0.4527 0.5195 + ] def + +% compute the resolution + + STCold /HWResolution get dup + 0 get exch 1 get mul sqrt /STCdpi exch def + +% pick the colormodel + STCold /ProcessColorModel get /STCcolor exch def + + mark % prepare stack for "putdeviceprops" + +% warn for BitsPerPixel=30 with fsrgb + STCcolor /DeviceRGB eq STCold /BitsPerPixel get 32 eq and + { + (%%[ stcolor.ps: inefficient RGB-setup, recommend BitsPerPixel=24 ]%%\n) + print + } if + +% if the Dithering-Method is default (gscmyk), change it to fscmyk +% this is achieved by pushing a name/value-pair onto the stack +% if the selected algorithm uses another ProcessColorModel, it is necessary +% to change the Value of STCcolor according to the new algorithm. + + STCold /Dithering get (gscmyk) eq + { + /Dithering (hscmyk) % preferred dithering-method + } if % might be necessary to change STCcolor too + +% +% select the array according to the resolution +% + STCdpi 359.0 lt + { STCdeftransfer } + { STCdpi 361.0 lt + { STCKtransfer360 } + { STCdpi 719.0 gt + { STCKtransfer720 } + { + STCKtransfer360 length STCKtransfer720 length eq + { + 0 1 STCKtransfer360 length 1 sub + { + dup dup + STCKtransfer360 exch get + exch STCKtransfer720 exch get + add 2.0 div + STCKtransfer360 3 1 roll put + } for + }if + STCKtransfer360 + } ifelse + }ifelse + } ifelse + /STCtransfer exch def + +% +% Add the arrays. With Version 1.17 and above, it seems to be +% a good idea, to use the transfer-arrays as coding-arrays too. +% + +% +% RGB-Model requires inversion of the transfer-arrays +% + STCcolor /DeviceRGB eq + { + /RGBtransfer STCtransfer length array def + 0 1 STCtransfer length 1 sub + { + dup RGBtransfer length 1 sub exch sub exch + STCtransfer exch get 1.0 exch sub + RGBtransfer 3 1 roll put + } for + + /Rtransfer RGBtransfer + /Gtransfer RGBtransfer + /Btransfer RGBtransfer + + /Rcoding RGBtransfer + /Gcoding RGBtransfer + /Bcoding RGBtransfer + + }{ + + /Ctransfer STCtransfer + /Mtransfer STCtransfer + /Ytransfer STCtransfer + /Ktransfer STCtransfer + + /Ccoding STCtransfer + /Mcoding STCtransfer + /Ycoding STCtransfer + /Kcoding STCtransfer + + } ifelse + + counttomark 0 ne + {currentdevice putdeviceprops pop}{cleartomark}ifelse + +% decativate predefined correction + + {} dup dup currenttransfer setcolortransfer + + }{ + (%%[ stcolor.ps: currentdevice is not stcolor - ignored ]%%\n) print + } ifelse +}{ + (%%[ stcolor.ps: not interpreted by AFPL Ghostscript - ignored ]%%\n) print +} ifelse |