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文件: /usr/share/enscript/enscript.pro
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% % PostScript prolog. % Copyright (c) 1995-1998 Markku Rossi. % % Author: Markku Rossi <mtr@iki.fi> % % % This file is part of GNU Enscript. % % Enscript is free software: you can redistribute it and/or modify % it under the terms of the GNU General Public License as published by % the Free Software Foundation, either version 3 of the License, or % (at your option) any later version. % % Enscript is distributed in the hope that it will be useful, % but WITHOUT ANY WARRANTY; without even the implied warranty of % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the % GNU General Public License for more details. % % You should have received a copy of the GNU General Public License % along with Enscript. If not, see <http://www.gnu.org/licenses/>. % % -- code follows this line -- % % Procedures. % /_S { % save current state /_s save def } def /_R { % restore from saved state _s restore } def /S { % showpage protecting gstate gsave showpage grestore } bind def /MF { % fontname newfontname -> - make a new encoded font /newfontname exch def /fontname exch def /fontdict fontname findfont def /newfont fontdict maxlength dict def fontdict { exch dup /FID eq { % skip FID pair pop pop } { % copy to the new font dictionary exch newfont 3 1 roll put } ifelse } forall newfont /FontName newfontname put % insert only valid encoding vectors encoding_vector length 256 eq { newfont /Encoding encoding_vector put } if newfontname newfont definefont pop } def /MF_PS { % fontname newfontname -> - make a new font preserving its enc /newfontname exch def /fontname exch def /fontdict fontname findfont def /newfont fontdict maxlength dict def fontdict { exch dup /FID eq { % skip FID pair pop pop } { % copy to the new font dictionary exch newfont 3 1 roll put } ifelse } forall newfont /FontName newfontname put newfontname newfont definefont pop } def /SF { % fontname width height -> - set a new font /height exch def /width exch def findfont [width 0 0 height 0 0] makefont setfont } def /SUF { % fontname width height -> - set a new user font /height exch def /width exch def /F-gs-user-font MF /F-gs-user-font width height SF } def /SUF_PS { % fontname width height -> - set a new user font preserving its enc /height exch def /width exch def /F-gs-user-font MF_PS /F-gs-user-font width height SF } def /M {moveto} bind def /s {show} bind def /Box { % x y w h -> - define box path /d_h exch def /d_w exch def /d_y exch def /d_x exch def d_x d_y moveto d_w 0 rlineto 0 d_h rlineto d_w neg 0 rlineto closepath } def /bgs { % x y height blskip gray str -> - show string with bg color /str exch def /gray exch def /blskip exch def /height exch def /y exch def /x exch def gsave x y blskip sub str stringwidth pop height Box gray setgray fill grestore x y M str s } def /bgcs { % x y height blskip red green blue str -> - show string with bg color /str exch def /blue exch def /green exch def /red exch def /blskip exch def /height exch def /y exch def /x exch def gsave x y blskip sub str stringwidth pop height Box red green blue setrgbcolor fill grestore x y M str s } def % Highlight bars. /highlight_bars { % nlines lineheight output_y_margin gray -> - gsave setgray /ymarg exch def /lineheight exch def /nlines exch def % This 2 is just a magic number to sync highlight lines to text. 0 d_header_y ymarg sub 2 sub translate /cw d_output_w cols div def /nrows d_output_h ymarg 2 mul sub lineheight div cvi def % for each column 0 1 cols 1 sub { cw mul /xp exch def % for each rows 0 1 nrows 1 sub { /rn exch def rn lineheight mul neg /yp exch def rn nlines idiv 2 mod 0 eq { % Draw highlight bar. 4 is just a magic indentation. xp 4 add yp cw 8 sub lineheight neg Box fill } if } for } for grestore } def % Line highlight bar. /line_highlight { % x y width height gray -> - gsave /gray exch def Box gray setgray fill grestore } def % Column separator lines. /column_lines { gsave .1 setlinewidth 0 d_footer_h translate /cw d_output_w cols div def 1 1 cols 1 sub { cw mul 0 moveto 0 d_output_h rlineto stroke } for grestore } def % Column borders. /column_borders { gsave .1 setlinewidth 0 d_footer_h moveto 0 d_output_h rlineto d_output_w 0 rlineto 0 d_output_h neg rlineto closepath stroke grestore } def % Do the actual underlay drawing /draw_underlay { ul_style 0 eq { ul_str true charpath stroke } { ul_str show } ifelse } def % Underlay /underlay { % - -> - gsave 0 d_page_h translate d_page_h neg d_page_w atan rotate ul_gray setgray ul_font setfont /dw d_page_h dup mul d_page_w dup mul add sqrt def ul_str stringwidth pop dw exch sub 2 div ul_h_ptsize -2 div moveto draw_underlay grestore } def /user_underlay { % - -> - gsave ul_x ul_y translate ul_angle rotate ul_gray setgray ul_font setfont 0 0 ul_h_ptsize 2 div sub moveto draw_underlay grestore } def % Page prefeed /page_prefeed { % bool -> - statusdict /prefeed known { statusdict exch /prefeed exch put } { pop } ifelse } def % Wrapped line markers /wrapped_line_mark { % x y charwith charheight type -> - /type exch def /h exch def /w exch def /y exch def /x exch def type 2 eq { % Black boxes (like TeX does) gsave 0 setlinewidth x w 4 div add y M 0 h rlineto w 2 div 0 rlineto 0 h neg rlineto closepath fill grestore } { type 3 eq { % Small arrows gsave .2 setlinewidth x w 2 div add y h 2 div add M w 4 div 0 rlineto x w 4 div add y lineto stroke x w 4 div add w 8 div add y h 4 div add M x w 4 div add y lineto w 4 div h 8 div rlineto stroke grestore } { % do nothing } ifelse } ifelse } def % EPSF import. /BeginEPSF { /b4_Inc_state save def % Save state for cleanup /dict_count countdictstack def % Count objects on dict stack /op_count count 1 sub def % Count objects on operand stack userdict begin /showpage { } def 0 setgray 0 setlinecap 1 setlinewidth 0 setlinejoin 10 setmiterlimit [ ] 0 setdash newpath /languagelevel where { pop languagelevel 1 ne { false setstrokeadjust false setoverprint } if } if } bind def /EndEPSF { count op_count sub { pos } repeat % Clean up stacks countdictstack dict_count sub { end } repeat b4_Inc_state restore } bind def % Check PostScript language level. /languagelevel where { pop /gs_languagelevel languagelevel def } { /gs_languagelevel 1 def } ifelse
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