summaryrefslogtreecommitdiff
path: root/graphics/asymptote/texfile.h
blob: 7387349c4cef50197a59624637c1a7f8635ff5b6 (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
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
/*****
 * texfile.h
 * John Bowman 2003/03/14
 *
 * Encapsulates the writing of commands to a TeX file.
 *****/

#ifndef TEXFILE_H
#define TEXFILE_H

#include <fstream>
#include <iomanip>
#include <iostream>

#include "common.h"
#include "pair.h"
#include "bbox.h"
#include "pen.h"
#include "util.h"
#include "interact.h"
#include "path.h"
#include "array.h"
#include "psfile.h"
#include "settings.h"
#include "process.h"

namespace camp {

template<class T>
void texdocumentclass(T& out, bool pipe=false)
{
  if(settings::latex(settings::getSetting<string>("tex")) &&
     (pipe || !settings::getSetting<bool>("inlinetex")))
    out << "\\documentclass[12pt]{article}" << newl;
}

template<class T>
void texuserpreamble(T& out,
                     mem::list<string>& preamble=processData().TeXpreamble,
                     bool pipe=false)
{
  for(mem::list<string>::iterator p=preamble.begin(); p != preamble.end();
      ++p) {
    out << stripblanklines(*p);
    if(pipe) out << newl << newl;
  }
}

template<class T>
void latexfontencoding(T& out)
{
  out << "\\makeatletter%" << newl
      << "\\let\\ASYencoding\\f@encoding%" << newl
      << "\\let\\ASYfamily\\f@family%" << newl
      << "\\let\\ASYseries\\f@series%" << newl
      << "\\let\\ASYshape\\f@shape%" << newl
      << "\\makeatother%" << newl;
}

template<class T>
void texpreamble(T& out, mem::list<string>& preamble=processData().TeXpreamble,
                 bool pipe=false, bool ASYbox=true)
{
  texuserpreamble(out,preamble,pipe);
  string texengine=settings::getSetting<string>("tex");
  if(settings::context(texengine))
    out << "\\disabledirectives[system.errorcontext]%" << newl;
  if(ASYbox)
    out << "\\newbox\\ASYbox" << newl
        << "\\newdimen\\ASYdimen" << newl;
  out << "\\def\\ASYprefix{" << stripFile(settings::outname()) << "}" << newl
      << "\\long\\def\\ASYbase#1#2{\\leavevmode\\setbox\\ASYbox=\\hbox{#1}%"
      << "\\ASYdimen=\\ht\\ASYbox%" << newl
      << "\\setbox\\ASYbox=\\hbox{#2}\\lower\\ASYdimen\\box\\ASYbox}" << newl;
  if(!pipe)
    out << "\\long\\def\\ASYaligned(#1,#2)(#3,#4)#5#6#7{\\leavevmode%" << newl
        << "\\setbox\\ASYbox=\\hbox{#7}%" << newl
        << "\\setbox\\ASYbox\\hbox{\\ASYdimen=\\ht\\ASYbox%" << newl
        << "\\advance\\ASYdimen by\\dp\\ASYbox\\kern#3\\wd\\ASYbox"
        << "\\raise#4\\ASYdimen\\box\\ASYbox}%" << newl
        << "\\setbox\\ASYbox=\\hbox{#5\\wd\\ASYbox 0pt\\dp\\ASYbox 0pt\\ht\\ASYbox 0pt\\box\\ASYbox#6}%" << newl
        << "\\hbox to 0pt{\\kern#1pt\\raise#2pt\\box\\ASYbox\\hss}}%" << newl
        << "\\long\\def\\ASYalignT(#1,#2)(#3,#4)#5#6{%" << newl
        << "\\ASYaligned(#1,#2)(#3,#4){%" << newl
        << settings::beginlabel(texengine) << "%" << newl
        << "}{%" << newl
        << settings::endlabel(texengine) << "%" << newl
        << "}{#6}}" << newl
        << "\\long\\def\\ASYalign(#1,#2)(#3,#4)#5{"
        << "\\ASYaligned(#1,#2)(#3,#4){}{}{#5}}" << newl
        << settings::rawpostscript(texengine) << newl;
}

// Work around bug in dvips.def: allow spaces in file names.
template<class T>
void dvipsfix(T &out)
{
  if(!settings::pdf(settings::getSetting<string>("tex"))) {
    out << "\\makeatletter" << newl
        << "\\def\\Ginclude@eps#1{%" << newl
        << " \\message{<#1>}%" << newl
        << "  \\bgroup" << newl
        << "  \\def\\@tempa{!}%" << newl
        << "  \\dimen@\\Gin@req@width" << newl
        << "  \\dimen@ii.1bp%" << newl
        << "  \\divide\\dimen@\\dimen@ii" << newl
        << "  \\@tempdima\\Gin@req@height" << newl
        << "  \\divide\\@tempdima\\dimen@ii" << newl
        << "    \\special{PSfile=#1\\space" << newl
        << "      llx=\\Gin@llx\\space" << newl
        << "      lly=\\Gin@lly\\space" << newl
        << "      urx=\\Gin@urx\\space" << newl
        << "      ury=\\Gin@ury\\space" << newl
        << "      \\ifx\\Gin@scalex\\@tempa\\else rwi=\\number\\dimen@\\space\\fi" << newl
        << "      \\ifx\\Gin@scaley\\@tempa\\else rhi=\\number\\@tempdima\\space\\fi" << newl
        << "      \\ifGin@clip clip\\fi}%" << newl
        << "  \\egroup}" << newl
        << "\\makeatother" << newl;
  }
}

template<class T>
void texdefines(T& out, mem::list<string>& preamble=processData().TeXpreamble,
                bool pipe=false)
{
  string texengine=settings::getSetting<string>("tex");
  bool latex=settings::latex(texengine);
  bool inlinetex=settings::getSetting<bool>("inlinetex");
  if(pipe || !inlinetex) {
    bool lua=settings::lua(texengine);
    if(latex) {
      if(lua) {
        out << "\\edef\\pdfpageattr{\\pdfvariable pageattr}" << newl
            << "\\ifx\\pdfpagewidth\\undefined\\let\\pdfpagewidth\\paperwidth"
            << "\\fi" << newl
            << "\\ifx\\pdfpageheight\\undefined\\let\\pdfpageheight"
            << "\\paperheight"
            << "\\fi" << newl
            << "\\usepackage{graphicx}" << newl;
      } else {
        out << "\\let\\paperwidthsave\\paperwidth\\let\\paperwidth\\undefined"
            << newl
            << "\\usepackage{graphicx}" << newl
            << "\\let\\paperwidth\\paperwidthsave" << newl;
      }
    } else {
      if(lua) {
        out << "\\edef\\pdfpageattr{\\pdfvariable pageattr}" << newl
            << "\\ifx\\pdfpagewidth\\undefined\\let\\pdfpagewidth\\pagewidth"
            << "\\fi" << newl
            << "\\ifx\\pdfpageheight\\undefined\\let\\pdfpageheight"
            << "\\pageheight"
            << "\\fi" << newl;
      }
    }
    texpreamble(out,preamble,pipe);
  }

  if(pipe) {
    // Make tex pipe aware of a previously generated aux file.
    string name=auxname(settings::outname(),"aux");
    std::ifstream fin(name.c_str());
    if(fin) {
      std::ofstream fout("texput.aux");
      string s;
      while(getline(fin,s))
        fout << s << endl;
    }
  }

  if(latex) {
    if(!inlinetex) {
      dvipsfix(out);
    }
    if(pipe) {
      out << "\\begin{document}" << newl;
      latexfontencoding(out);
    }
  } else if(!settings::context(texengine)) {
    out << "\\input graphicx" << newl // Fix miniltx path parsing bug:
        << "\\makeatletter" << newl
        << "\\def\\filename@parse#1{%" << newl
        << "  \\let\\filename@area\\@empty" << newl
        << "  \\expandafter\\filename@path#1/\\\\}" << newl
        << "\\def\\filename@path#1/#2\\\\{%" << newl
        << "  \\ifx\\\\#2\\\\%" << newl
        << "     \\def\\reserved@a{\\filename@simple#1.\\\\}%" << newl
        << "  \\else" << newl
        << "     \\edef\\filename@area{\\filename@area#1/}%" << newl
        << "     \\def\\reserved@a{\\filename@path#2\\\\}%" << newl
        << "  \\fi" << newl
        << "  \\reserved@a}" << newl
        << "\\makeatother" << newl;
    dvipsfix(out);

    if(!pipe)
      out << "\\input picture" << newl;
  }
}

template<class T>
bool setlatexfont(T& out, const pen& p, const pen& lastpen)
{
  if(p.size() != lastpen.size() || p.Lineskip() != lastpen.Lineskip()) {
    out <<  "\\fontsize{" << p.size()*settings::ps2tex << "}{"
        << p.Lineskip()*settings::ps2tex << "}\\selectfont%" << newl;
    return true;
  }
  return false;
}

template<class T>
bool settexfont(T& out, const pen& p, const pen& lastpen, bool latex)
{
  string font=p.Font();
  if(font != lastpen.Font() || (!latex && p.size() != lastpen.size())) {
    out << font << "%" << newl;
    return true;
  }
  return false;
}

class texfile : public psfile {
protected:
  bbox box;
  bool inlinetex;
  double Hoffset;
  int level;
  bool pdf;

public:
  string texengine;

  texfile(const string& texname, const bbox& box, bool pipe=false);
  virtual ~texfile();

  void prologue(bool deconstruct=false);
  virtual void beginpage() {}

  void epilogue(bool pipe=false);
  virtual void endpage() {}

  void setpen(pen p);

  void setfont(pen p);

  void gsave(bool tex=true);

  void grestore(bool tex=true);

  void beginspecial();

  void endspecial();

  void special(const string &s);

  void beginraw();

  void endraw();

  void begingroup() {++level;}

  void endgroup() {--level;}

  bool toplevel() {return level == 0;}

  virtual void beginpicture(const bbox& b);
  void endpicture(const bbox& b, bool newPage=false);

  virtual void newpage(const bbox&) {
    verbatimline(settings::newpage(texengine));
  }

  void BBox(const bbox& b) {
    bbox B=b.shift(pair(-hoffset(),-voffset()));
    if(pdf) {
      if(settings::xe(texengine))
        *out << "\\special{pdf: put @thispage <</MediaBox [" << B << "]>>}%"
             << newl;
      else
        if(settings::context(texengine)) {
          double width=B.right-B.left;
          double height=B.top-B.bottom;
          *out << "\\definepapersize[asy]["
               << "width=" << width << "bp,"
               << "height=" << height << "bp]%" << newl
               << "\\setuppapersize[asy][asy]%" << newl
               << "\\setuplayout["
               << "backspace=" << -B.left << "bp,"
               << "topspace=" << B.top-(box.top-box.bottom) << "bp]%" << newl;
        } else
          *out << "\\pdfpageattr{/MediaBox [" << B << "]}%" << newl;
    }
  }

  void writepair(pair z) {
    *out << z;
  }

  void miniprologue();

  void writeshifted(path p, bool newPath=true);
  virtual double hoffset() {return Hoffset;}
  virtual double voffset() {return box.bottom;}

  // Draws label transformed by T at position z.
  void put(const string& label, const transform& T, const pair& z,
           const pair& Align);

  void beginlayer(const string& psname, bool postscript);
  void endlayer();

  virtual void Offset(const bbox& box, bool special=false) {};
};

class svgtexfile : public texfile {
  mem::stack<size_t> clipstack;
  size_t clipcount;
  size_t gradientcount;
  size_t gouraudcount;
  size_t tensorcount;
  bool inspecial;
  static string nl;
  pair offset;
  bool first;
  bool deconstruct;
public:
  svgtexfile(const string& texname, const bbox& box, bool pipe=false,
             bool deconstruct=false) :
    texfile(texname,box,pipe), deconstruct(deconstruct) {
    inspecial=false;

    *out << "\\catcode`\\%=12" << newl
         << "\\def\\percent{%}" << newl
         << "\\catcode`\\%=14" << newl;

    first=true;
    Offset(box);
  }

  void Offset(const bbox& b, bool special=false) {
    box=b;
    if(special) {
      texfile::beginpicture(b);
      pair bboxshift=pair(-2*b.left,b.top-b.bottom);
      bbox b0=svgbbox(b,bboxshift);
      *out << "\\special{dvisvgm:bbox f "
           << b0.left << "bp "
           << b0.bottom << "bp "
           << b0.right << "bp "
           << b0.top << "bp}%" << newl;
    }

    Hoffset=inlinetex ? box.right : box.left;
    offset=pair(box.left,box.top);
    clipstack=mem::stack<size_t>();
    clipcount=0;
    gradientcount=0;
    gouraudcount=0;
    tensorcount=0;
  }

  void beginpicture(const bbox& b) {
    Offset(b,true);
  }

  void newpage(const bbox& b) {
    if(deconstruct) {
      if(first)
        first=false;
      else
        endpicture(b,true);
      beginpicture(b);
    }
  }

  void writeclip(path p, bool newPath=true) {
    write(p,false);
  }

  void dot(path p, pen, bool newPath=true);

  void writeshifted(pair z) {
    write(conj(shift(-offset)*z)*settings::ps2tex);
  }

  double hoffset() {return Hoffset+offset.getx();}
  double voffset() {return box.bottom+offset.gety();}

  void translate(pair z) {}
  void concat(transform t) {}

  void beginspecial(bool def=false);
  void endspecial();

  void beginpage() {
    beginpicture(box);
  }

  void endpage() {
    endpicture(box);
  }

  void transform();
  void begintransform();
  void endtransform();

  void clippath();

  void beginpath();
  void endpath();

  void newpath() {
    beginspecial();
    begintransform();
    beginpath();
  }

// Workaround libc++ parsing bug under MacOS.
#ifdef __APPLE__
  const string sep=" ";
#else
  const string sep="";
#endif
  void moveto(pair z) {
    *out << sep << "M";
    writeshifted(z);
  }

  void lineto(pair z) {
    *out << sep << "L";
    writeshifted(z);
  }

  void curveto(pair zp, pair zm, pair z1) {
    *out << sep << "C";
    writeshifted(zp); writeshifted(zm); writeshifted(z1);
  }

  void closepath() {
    *out << sep << "Z";
  }

  string rgbhex(pen p) {
    p.torgb();
    return p.hex();
  }

  void properties(const pen& p);
  void color(const pen &p, const string& type);

  void stroke(const pen &p, bool dot=false);
  void strokepath();

  void fillrule(const pen& p, const string& type="fill");
  void fill(const pen &p);

  void begingradientshade(bool axial, ColorSpace colorspace,
                          const pen& pena, const pair& a, double ra,
                          const pen& penb, const pair& b, double rb);
  void gradientshade(bool axial, ColorSpace colorspace,
                     const pen& pena, const pair& a, double ra,
                     bool extenda, const pen& penb, const pair& b,
                     double rb, bool extendb);

  void gouraudshade(const pen& p0, const pair& z0,
                    const pen& p1, const pair& z1,
                    const pen& p2, const pair& z2);
  void begingouraudshade(const vm::array& pens, const vm::array& vertices,
                         const vm::array& edges);
  void gouraudshade(const pen& pentype, const vm::array& pens,
                    const vm::array& vertices, const vm::array& edges);

  void beginclip();

  void endclip(const pen &p);
  void endpsclip(const pen &p) {}

  void setpen(pen p) {if(!inspecial) texfile::setpen(p);}

  void gsave(bool tex=false);

  void grestore(bool tex=false);
};

} //namespace camp

#endif