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- % Copyright (C) 1990, 1991, 1993, 1994 Aladdin Enterprises. All rights reserved.
- %
- % This file is part of Aladdin Ghostscript.
- %
- % Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author
- % 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 analogs of Display PostScript functions
- % that are also included in Level 2.
- % When this is run, systemdict is still writable,
- % but everything defined here goes into level2dict.
-
- level2dict begin
-
- % ------ Virtual memory ------ %
-
- /currentshared /.currentglobal load def
- /scheck /.gcheck load def
- /setshared /.setglobal load def
- %****** FOLLOWING IS WRONG ******
- /shareddict currentdict /globaldict .knownget not { 20 dict } if def
- /SharedFontDirectory 2 dict def % will auto-expand
-
- % ------ Fonts ------ %
-
- /selectfont
- { exch findfont exch
- dup type /arraytype eq { makefont } { scalefont } ifelse
- setfont
- } odef
- /undefinefont
- { FontDirectory exch undef
- } odef
-
- % ------ Halftones ------ %
-
- /.makestackdict
- { { counttomark -1 roll } forall .dicttomark
- } bind def
- /currenthalftone
- { mark .currenthalftone
- { { exch pop } % halftone
- { /HalftoneType 1 % screen
- { /Frequency /Angle /SpotFunction }
- .makestackdict
- }
- { /HalftoneType 2 % colorscreen
- { /RedFrequency /RedAngle /RedSpotFunction
- /GreenFrequency /GreenAngle /GreenSpotFunction
- /BlueFrequency /BlueAngle /BlueSpotFunction
- /GrayFrequency /GrayAngle /GraySpotFunction
- }
- .makestackdict
- }
- }
- exch get exec
- } odef
- % Define sethalftone so it converts all other types to type 5.
- /.sethalftoneRGBV % <dict> <type> <keys> <keysRGBV>
- { 4 -1 roll exch { 1 index exch get exch } forall 15 1 roll
- 14 -2 roll mark 15 1 roll { /Gray /Blue /Green /Red }
- { % stack: v0 v1 v2 type keys comp
- mark
- 2 index 0 get 8 -1 roll
- 4 index 1 get 9 -1 roll
- 6 index 2 get 10 -1 roll
- % stack: type keys comp mark k0 v0 k1 v1 k2 v2
- /HalftoneType 10 index .dicttomark
- counttomark 2 roll
- }
- forall pop pop
- /Default 1 index .dicttomark .sethalftone5
- } bind def
- /sethalftone
- { dup /HalftoneType get 1 sub
- { { mark /Default 2 index .dicttomark .sethalftone5 }
- { 1 { /Frequency /Angle /SpotFunction }
- { /RedFrequency /RedAngle /RedSpotFunction
- /GreenFrequency /GreenAngle /GreenSpotFunction
- /BlueFrequency /BlueAngle /BlueSpotFunction
- /GrayFrequency /GrayAngle /GraySpotFunction
- } .sethalftoneRGBV
- }
- { mark /Default 2 index .dicttomark .sethalftone5 }
- { 3 { /Width /Height /Thresholds }
- { /RedWidth /RedHeight /RedThresholds
- /GreenWidth /GreenHeight /GreenThresholds
- /BlueWidth /BlueHeight /BlueThresholds
- /GrayWidth /GrayHeight /GrayThresholds
- } .sethalftoneRGBV
- }
- { dup .sethalftone5 }
- } exch get exec
- } odef
- % Redefine setscreen to recognize halftone dictionaries.
- /setscreen
- { dup type /dicttype eq
- { sethalftone pop pop }
- { //setscreen }
- ifelse
- } odef
-
- % ------ User objects ------ %
-
- /.localarray
- { currentglobal false setglobal
- exch array exch setglobal
- } bind def
- /defineuserobject
- { userdict /UserObjects known
- { 1 index userdict /UserObjects get length ge
- { 1 index 1 add .localarray userdict /UserObjects get
- 1 index copy pop
- userdict /UserObjects 3 -1 roll put
- }
- if
- }
- { userdict /UserObjects 3 index 1 add .localarray put
- }
- ifelse
- userdict /UserObjects get 3 1 roll put
- } odef
- /execuserobject
- { userdict /UserObjects get exch get exec
- } odef
- /undefineuserobject
- { userdict /UserObjects get exch null put
- } odef
-
- % ------ User paths ------ %
-
- /upath
- { [ exch {/ucache cvx} if pathbbox /setbbox cvx
- {/moveto cvx} {/lineto cvx} {/curveto cvx} {/closepath cvx}
- pathforall ] cvx
- } odef
-
- % Dummy definitions for cache control operators
-
- /ucachestatus
- { mark 0 0 0 0 0 } odef
- /setucacheparams
- { cleartomark } odef
-
- % End of level2dict
-
- end
-