summaryrefslogtreecommitdiff
path: root/Build/source/texk/gsftopk/render.ps
blob: 2c067451b978ea20732d84e34ae1619df27f2235 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
% render.ps - write font bitmaps and metric information to standard output.
% Version 1.18.

% ========================================================================
%
% Copyright (c) 1993-1998  Paul Vojta
%
% Permission is hereby granted, free of charge, to any person obtaining a copy
% of this software and associated documentation files (the "Software"), to
% deal in the Software without restriction, including without limitation the
% rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
% sell copies of the Software, and to permit persons to whom the Software is
% furnished to do so, subject to the following conditions:
%
% The above copyright notice and this permission notice shall be included in
% all copies or substantial portions of the Software.
%
% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
% PAUL VOJTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
% IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
% CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
%
% ========================================================================

%%%
% Usage:  gs -DNODISPLAY -q -- render.ps fontname dlstring specinfo dpi
% Then, it will read standard input to get:
%	pointsize
%	charset

% Example:
% % gs -DNODISPLAY -q -- render.ps Helvetica "(phvr.gsf) run" \
% > ".5 ExtendFont" 300
% GS> 10
% GS> 97 98 99

/TeXDict currentdict def  % needed by dotlessj.pro

%%
%
% Standard file definitions

/.stdin  where { pop } { /.stdin  (%stdin)  (r) file def } ifelse

/bad-stdout false def
/.stdout where
  { pop }
  { { /.stdout (%stdout) (w) file def } stopped
    { /bad-stdout true def }
    if
  } ifelse

/bad-stderr false def
/.stderr where
  { pop }
  { { /.stderr (%stderr) (w) file def } stopped
    { /bad-stderr true def }
    if
  } ifelse

%%
%
% Define some routines first

% (string) fatal -
%	Print string to stderr and quit.

/fatal
  bad-stderr
  {{
    (\nrender.ps: ) exch concatstrings
    print flush 1 .quit
  }}
  {{
    (\nrender.ps: ) exch concatstrings
    .stderr exch writestring .stderr flushfile 1 .quit
  }}
  ifelse
bind def

% (string) brun -
%	Load a font in .pfb format.

/brun
  {
    (r) file false /PFBDecode filter cvx exec
  }
bind def

% (string) ttload font
%	Load a TrueType font (and leave it on the stack).

/ttload
  {
    FontOnStack
      {
	(Cannot load more than one TrueType font!\n) fatal
      } if
    (r) file .loadttfont
    /FontOnStack true def
  }
bind def

/FontOnStack false def

% (exec) getbbox -
%	Get bounding box of the executable object and save it in char-urx,
%	char-ury, etc.

/getbbox
  {
    gsave
      nulldevice
      erasepage
      newpath
      exec
      pathbbox % returns llx lly urx ury
      /char-ury exch ceiling cvi def
      /char-urx exch ceiling cvi def
      /char-lly exch floor cvi def
      /char-llx exch floor cvi def
    grestore
  }
bind def

% - drawfontbbox -
%	Draw the font's bbox.

/drawfontbbox
  {
    currentfont /FontBBox get
    dup dup 0 get exch 1 get currentfont /FontMatrix get transform moveto
    dup dup 0 get exch 3 get currentfont /FontMatrix get transform lineto
    dup dup 2 get exch 1 get currentfont /FontMatrix get transform lineto
    dup     2 get exch 3 get currentfont /FontMatrix get transform lineto
  }
bind def

% (exec) mkbboxdev -
%	Get bounding box of the executable object and make a device a few
%	pixels larger on each side.  If pathbbox fails for the object,
%	then use the font's bbox.

/mkbboxdev
  {
    getbbox

    char-llx char-urx sub round 0 eq char-lly char-ury sub round 0 eq or
      {
	{drawfontbbox} getbbox
      }
    if

      matrix
      char-urx char-llx sub 4 add % width
	dup /width exch def
      char-ury char-lly sub 4 add % height
	dup /height exch def
      <ff 00>
    makeimagedevice setdevice
    2 char-llx sub 2 char-lly sub translate
  }
bind def

%%
%
% These may be called by the "specinfo" string.

/usefontbbox false def

% These do things to a transformation array; called by entries in psfonts.map.
%
/ObliqueSlant	{dup sin exch cos div neg} bind def
/SlantFont	{font-size mul add} def
/ExtendFont	{3 -1 roll mul exch} def
/ReEncodeFont	{/Encoding exch def} def

% Define writeppmfile, if it's not provided, or if the symbol .stdout is not
% available.

/our-writeppmfile

  bad-stdout
  systemdict /writeppmfile known not
  or
  {{
    (P4\n) print
    width =string cvs print
    ( ) print
    height =string cvs print
    (\n) print

    width 7 add 8 div cvi string
    0 1 height 1 sub
      {
	currentdevice exch 2 index copyscanlines
	print
      }
    for
    pop % discard string
  }}
  {{
    .stdout currentdevice writeppmfile
  }}
  ifelse
def


%%
%
% Main program begins now.  Just interpret it.

% Get arguments.

shellarguments not
  {
    (You must provide arguments to the shell!\n) fatal
  }
if

/dpi exch cvr def
/specinfo exch def
/dlstring exch def
/fontname exch def

% Return the gs version number to the calling program.

(V ) print revision =

% Open the font.

dlstring () ne
  {
    dlstring cvx exec
  }
if

FontOnStack not
  {
    Fontmap fontname cvn known	% Or:  fontname cvn /Font resourcestatus?
      {
	fontname cvlit findfont
      }
      {
	FontDirectory fontname cvn known
	  {
	    fontname cvlit findfont
	  }
	  {
	    revision 341 lt
	      {
		/defaultfontname fontname cvlit def
	      }
	    if

	    { fontname cvlit findfont } stopped
	      {
		(font ) fontname concatstrings
		( is not defined.\n) concatstrings
		fatal
	      }
	    if
	  }
	ifelse
      }
    ifelse
  }
if

% Get arguments from stdin.  Just leave the character list on the stack.

/font-size
  .stdin 20 string readline pop cvr % get pointsize
  72.27 div dpi mul % let's work in (TeX) points
def
[ .stdin 1024 string readline pop cvx exec ] % character list

% Define the font, and make it current.

    % Get the font.
  exch
    % Copy over the font dictionary to make it writable;
    % this makes ReEncodeFont easier, and is needed for dotless j processing.
  dup length 1 add dict begin
  {1 index /FID ne {def}{pop pop} ifelse} forall
    % Now do the transformations specified in psfonts.map.
  [ font-size 0 specinfo cvx exec 0 exch font-size 0 0 ]
    % End the current dictionary, and make it a font.
  /TargetFont currentdict end definefont
    % Apply the tranformation matrix and make the font current.
exch makefont dup /TargetFont exch def setfont

% If the font's bounding box is zero, then do not use it.

usefontbbox
  { currentfont /FontBBox get
    true exch {0 eq and} forall
    {/usefontbbox false def}if
  }
if

% If we are to use the font's bounding box, then get it and transform it.

usefontbbox
  {
    {drawfontbbox} mkbboxdev
  }
if

% Begin loop over characters.

  {
    /charno exch def
    /charstring 1 string dup 0 charno put def
    /charwidth charstring stringwidth pop def

    % Get the character's bounding box.  This also makes the device.
    usefontbbox not
      {
	{ 0 0 moveto charstring true charpath } mkbboxdev
      }
    if

    % Print the metric info.
    (#^ ) print
    charno =string cvs print
    ( ) print
    char-llx =string cvs print
    ( ) print
    char-lly =string cvs print
    ( ) print
    char-urx =string cvs print
    ( ) print
    char-ury =string cvs print
    ( ) print
    charwidth =string cvs print
    (\n) print

    % Now write the bitmap.
    erasepage 0 0 moveto
    charstring show
    our-writeppmfile
  }
forall