gs_lev2.ps

遗传算法工具箱 希望高手指点 GATOOLS

%    Copyright (C) 1990, 1996 Aladdin Enterprises.  All rights reserved.
% 
% This file is part of Aladdin Ghostscript.
% 
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% or distributor accepts any responsibility for the consequences of using it,
% or for whether it serves any particular purpose or works at all, unless he
% or she says so in writing.  Refer to the Aladdin Ghostscript Free Public
% License (the "License") for full details.
% 
% Every copy of Aladdin Ghostscript must include a copy of the License,
% normally in a plain ASCII text file named PUBLIC.  The License grants you
% the right to copy, modify and redistribute Aladdin Ghostscript, but only
% under certain conditions described in the License.  Among other things, the
% License requires that the copyright notice and this notice be preserved on
% all copies.

% Initialization file for Level 2 functions.
% When this is run, systemdict is still writable,
% but (almost) everything defined here goes into level2dict.

level2dict begin

% ------ Miscellaneous ------ %

(<<) cvn /mark load def
(>>) cvn /.dicttomark load def
/currentsystemparams { mark .currentsystemparams .dicttomark } odef
/currentuserparams { mark .currentuserparams .dicttomark } odef
/deviceinfo { currentdevice getdeviceprops .dicttomark readonly } odef
/languagelevel 2 def
% When running in Level 2 mode, this interpreter is supposed to be
% compatible with PostScript version 2010 (I think).
/version (2010) def

% If binary tokens are supported by this interpreter,
% set an appropriate default binary object format.
/setobjectformat where
 { pop
   currentsystemparams dup
   /RealFormat get (IEEE) eq { 1 } { 3 } ifelse
   exch /ByteOrder get { 1 add } if
   setobjectformat
 } if

% ------ Virtual memory ------ %

/currentglobal /currentshared load def
/gcheck /scheck load def
/setglobal /setshared load def
% We can make the global dictionaries very small, because they auto-expand.
/globaldict currentdict /shareddict .knownget not { 4 dict } if def
/GlobalFontDirectory SharedFontDirectory def

% ------ IODevices ------ %

/.getdevparams where
 { pop /currentdevparams { .getdevparams .dicttomark } odef
 } if
/.putdevparams where
 { pop /setdevparams { mark exch { } forall counttomark 2 add -1 roll .putdevparams } odef
 } if

% ------ Job control ------ %

serverdict begin

% We could protect the job information better, but we aren't attempting
% (currently) to protect ourselves against maliciousness.

/.jobsave null def		% top-level save object
/.jobsavelevel 0 def		% save depth of job (0 if .jobsave is null,
				% 1 otherwise)
/.adminjob true def		% status of current unencapsulated job

/exitserver
 { true exch startjob not { /exitserver /invalidaccess signalerror } if
 } bind def

end		% serverdict

%**************** The definition of startjob is not complete yet, since
% it doesn't clear the exec stack, doesn't reset stdin/stdout,
% doesn't run the job under its own control, and doesn't reset
% other aspects of the interpreter.
/startjob
 { vmstatus pop pop serverdict /.jobsavelevel get eq
   1 index .checkpassword 0 gt and
    { .checkpassword count 2 roll count 2 sub { pop } repeat
      cleardictstack
      serverdict /.jobsave get dup null eq { pop } { restore } ifelse
      exch
       {	% unencapsulated job
	 serverdict /.jobsave null put
	 serverdict /.jobsavelevel 0 put
	 serverdict /.adminjob 3 -1 roll 1 gt put
       }
       {	% encapsulated job
	 serverdict /.jobsave save put
	 serverdict /.jobsavelevel 1 put
	 userdict /quit /stop load put
	 pop
       }
      ifelse true
    }
    { pop pop false
    }
   ifelse
 } odef

systemdict begin
/quit
 { //systemdict /serverdict get /.jobsave get null eq
    { //quit }
    { //systemdict /quit get /invalidaccess signalerror }
   ifelse
 } bind odef
end

% ------ Compatibility ------ %

% In Level 2 mode, the following replace the definitions that gs_statd.ps
% installs in statusdict and serverdict.
% Note that statusdict must be allocated in local VM.
% We don't bother with many of these yet, and the ones defined in terms
% of currentsystemparams are cavalier about allocating a dictionary
% in order to retrieve a single element from it....

/.dict1 { exch mark 3 1 roll .dicttomark } bind def

currentglobal false setglobal 25 dict exch setglobal begin
currentsystemparams

/buildtime 1 index /BuildTime get def
/byteorder 1 index /ByteOrder get def
/checkpassword { .checkpassword 0 gt } bind def
/defaulttimeouts
 { currentsystemparams dup
   /JobTimeout .knownget not { 0 } if
   exch /WaitTimeout .knownget not { 0 } if
   currentpagedevice /ManualFeedTimeout .knownget not { 0 } if
 } bind def
dup /DoStartPage known
 { /dostartpage { currentsystemparams /DoStartPage get } bind def
   /setdostartpage { /DoStartPage .dict1 setsystemparams } bind def
 } if
dup /StartupMode known
 { /dosysstart { currentsystemparams /StartupMode get 0 ne } bind def
   /setdosysstart { { 1 } { 0 } ifelse /StartupMode .dict1 setsystemparams } bind def
 } if
%****** Setting jobname is supposed to set userparams.JobName, too.
/jobname { currentuserparams /JobName get } bind def
/jobtimeout { currentuserparams /JobTimeout get } bind def
%manualfeed
%manualfeedtimeout
/margins
 { currentpagedevice /Margins .knownget { exch } { [0 0] } ifelse
 } bind def
%pagecount
%pagestackorder
/printername
 { currentsystemparams /PrinterName .knownget not { () } if exch copy
 } bind def
%/ramsize { currentsystemparams /RamSize get } bind def
/realformat 1 index /RealFormat get def

/.setpagedevice where
 { pop
   /setdefaulttimeouts
    { exch mark /ManualFeedTimeout 3 -1 roll
      /Policies mark /ManualFeedTimeout 1 .dicttomark
      .dicttomark setpagedevice
      /WaitTimeout exch mark /JobTimeout 5 2 roll .dicttomark setsystemparams
    } bind def
   /setmargins
    { exch 2 array astore /Margins .dict1 setpagedevice
    } bind def
 }
if
%setpagestackorder
dup /PrinterName known
 { /setprintername { /PrinterName .dict1 setsystemparams } bind def
 } if
currentuserparams /WaitTimeout known
 { /waittimeout { currentuserparams /WaitTimeout get } bind def
 } if

/.setpagedevice where
 { pop 
   /pagemargin
    { currentpagedevice /PageOffset .knownget { 0 get } { 0 } ifelse
    } bind def
   /pageparams
    { currentpagedevice
      dup /Orientation .knownget { 1 and ORIENT1 { 1 xor } if } { 0 } ifelse exch
      dup /PageSize get aload pop 3 index 0 ne { exch } if 3 2 roll
      /PageOffset .knownget { 0 get } { 0 } ifelse 4 -1 roll
    } bind def
   /.setpagesize { 2 array astore /PageSize .dict1 setpagedevice } bind def
   /setduplexmode { /Duplex .dict1 setpagedevice } bind def
   /setpagemargin { 0 2 array astore /PageOffset .dict1 setpagedevice } bind def
   /setpageparams
    { mark /PageSize 6 -2 roll
      4 index 1 and ORIENT1 { 1 } { 0 } ifelse ne { exch } if 2 array astore
      /Orientation 5 -1 roll ORIENT1 { 1 xor } if
      /PageOffset counttomark 2 add -1 roll 0 2 array astore
      .dicttomark setpagedevice
    } bind def
   /setresolution
    { dup 2 array astore /HWResolution .dict1 setpagedevice
    } bind def
 }
if

pop		% currentsystemparams

% Flag the current dictionary so it will be swapped when we
% change language levels.  (See zmisc2.c for more information.)
/statusdict currentdict def

currentdict end
/statusdict exch def

% ------ Color spaces ------ %

% Define the setcolorspace procedures.
/colorspacedict mark
  /DeviceGray { pop 0 setgray } bind
  /DeviceRGB { pop 0 0 0 setrgbcolor } bind
  /setcmykcolor where
   { pop /DeviceCMYK { pop 0 0 0 1 setcmykcolor } bind
   } if
  /.setcieaspace where
   { pop /CIEBasedA { NOCIE { pop 0 setgray } { 1 get .setcieaspace } ifelse } bind
   } if
  /.setcieabcspace where
   { pop /CIEBasedABC { NOCIE { pop 0 0 0 setrgbcolor } { 1 get .setcieabcspace } ifelse } bind
   } if
  /.setciedefspace where
   { pop /CIEBasedDEF { NOCIE { pop 0 0 0 setrgbcolor } { 1 get .setciedefspace } ifelse } bind
   } if
  /.setciedefgspace where
   { pop /CIEBasedDEFG { NOCIE { pop 0 0 0 1 setcmykcolor } { 1 get .setciedefgspace } ifelse } bind
   } if
  /.setseparationspace where
   { pop /Separation { dup 2 get setcolorspace .setseparationspace } bind
   } if
  /.setindexedspace where
   { pop /Indexed { dup 1 get setcolorspace .setindexedspace } bind
   } if
  /.setpatternspace where
   { pop /Pattern
      { dup length 1 gt { dup 1 get setcolorspace } if
        .setpatternspace
      } bind
   } if
.dicttomark def

/.devcs [/DeviceGray /DeviceRGB /DeviceCMYK] readonly def
/currentcolorspace
 { .currentcolorspace dup type /integertype eq
    { //.devcs exch 1 getinterval
    } if
 } odef
currentdict /.devcs .undef

/setcolorspace
 { dup type /nametype eq { 1 array astore } if
   dup //colorspacedict 1 index 0 get get exec
   .setcolorspace
 } odef

% Initialize the CIE rendering dictionary if necessary.
% The most common CIE files seem to assume the "calibrated RGB color space"
% described on p. 189 of the PostScript Language Reference Manual,
% 2nd Edition; we simply invert this transformation back to RGB.
/setcolorrendering where
 { pop mark
   /ColorRenderingType 1
% We must make RangePQR and RangeLMN large enough so that values computed by
% the assumed encoding MatrixLMN don't get clamped.
   /RangePQR [0 0.9505 0 1 0 1.0890]
   /TransformPQR [ { } dup dup ]
   /RangeLMN [0 0.9505 0 1 0 1.0890]
   /MatrixABC
    [ 3.24063 -0.96893  0.05571
     -1.53721  1.87576 -0.20402
     -0.49863  0.04152  1.05700
    ]
   /EncodeABC [{0 max 0.45 exp} bind dup dup]
   /WhitePoint [0.9505 1 1.0890]
   .dicttomark setcolorrendering
 } if

% ------ Painting ------ %

% A straightforward definition of execform that doesn't actually
% do any caching.
/execform
 { dup /Implementation known not
    { dup /FormType get 1 ne { /rangecheck signalerror } if
      dup /Implementation null put readonly
    } if
   gsave dup /Matrix get concat
   dup /BBox get aload pop
   exch 3 index sub exch 2 index sub rectclip
   dup /PaintProc get exec
   grestore
 } odef

/makepattern
 { currentglobal
    { false setglobal .buildpattern true setglobal }
    { .buildpattern }
   ifelse
   exch dup length 1 add dict .copydict
   dup /Implementation 4 -1 roll put
   readonly
 } odef

/setpattern
 { currentcolorspace 0 get /Pattern ne
    { [ /Pattern currentcolorspace ] setcolorspace } if
   setcolor
 } odef

end				% level2dict