diff options
Diffstat (limited to 'apps/plugins/puzzles/ps.c')
-rw-r--r-- | apps/plugins/puzzles/ps.c | 433 |
1 files changed, 433 insertions, 0 deletions
diff --git a/apps/plugins/puzzles/ps.c b/apps/plugins/puzzles/ps.c new file mode 100644 index 0000000000..67d76b4daa --- /dev/null +++ b/apps/plugins/puzzles/ps.c | |||
@@ -0,0 +1,433 @@ | |||
1 | /* | ||
2 | * ps.c: PostScript printing functions. | ||
3 | */ | ||
4 | |||
5 | #include <stdio.h> | ||
6 | #include <stdarg.h> | ||
7 | #include <string.h> | ||
8 | #include "rbassert.h" | ||
9 | |||
10 | #include "puzzles.h" | ||
11 | |||
12 | #define ROOT2 1.414213562 | ||
13 | |||
14 | struct psdata { | ||
15 | FILE *fp; | ||
16 | int colour; | ||
17 | int ytop; | ||
18 | int clipped; | ||
19 | float hatchthick, hatchspace; | ||
20 | int gamewidth, gameheight; | ||
21 | drawing *drawing; | ||
22 | }; | ||
23 | |||
24 | static void ps_printf(psdata *ps, char *fmt, ...) | ||
25 | { | ||
26 | va_list ap; | ||
27 | |||
28 | va_start(ap, fmt); | ||
29 | vfprintf(ps->fp, fmt, ap); | ||
30 | va_end(ap); | ||
31 | } | ||
32 | |||
33 | static void ps_fill(psdata *ps, int colour) | ||
34 | { | ||
35 | int hatch; | ||
36 | float r, g, b; | ||
37 | |||
38 | print_get_colour(ps->drawing, colour, ps->colour, &hatch, &r, &g, &b); | ||
39 | |||
40 | if (hatch < 0) { | ||
41 | if (ps->colour) | ||
42 | ps_printf(ps, "%g %g %g setrgbcolor fill\n", r, g, b); | ||
43 | else | ||
44 | ps_printf(ps, "%g setgray fill\n", r); | ||
45 | } else { | ||
46 | /* Clip to the region. */ | ||
47 | ps_printf(ps, "gsave clip\n"); | ||
48 | /* Hatch the entire game printing area. */ | ||
49 | ps_printf(ps, "newpath\n"); | ||
50 | if (hatch == HATCH_VERT || hatch == HATCH_PLUS) | ||
51 | ps_printf(ps, "0 %g %d {\n" | ||
52 | " 0 moveto 0 %d rlineto\n" | ||
53 | "} for\n", ps->hatchspace, ps->gamewidth, | ||
54 | ps->gameheight); | ||
55 | if (hatch == HATCH_HORIZ || hatch == HATCH_PLUS) | ||
56 | ps_printf(ps, "0 %g %d {\n" | ||
57 | " 0 exch moveto %d 0 rlineto\n" | ||
58 | "} for\n", ps->hatchspace, ps->gameheight, | ||
59 | ps->gamewidth); | ||
60 | if (hatch == HATCH_SLASH || hatch == HATCH_X) | ||
61 | ps_printf(ps, "%d %g %d {\n" | ||
62 | " 0 moveto %d dup rlineto\n" | ||
63 | "} for\n", -ps->gameheight, ps->hatchspace * ROOT2, | ||
64 | ps->gamewidth, max(ps->gamewidth, ps->gameheight)); | ||
65 | if (hatch == HATCH_BACKSLASH || hatch == HATCH_X) | ||
66 | ps_printf(ps, "0 %g %d {\n" | ||
67 | " 0 moveto %d neg dup neg rlineto\n" | ||
68 | "} for\n", ps->hatchspace * ROOT2, | ||
69 | ps->gamewidth+ps->gameheight, | ||
70 | max(ps->gamewidth, ps->gameheight)); | ||
71 | ps_printf(ps, "0 setgray %g setlinewidth stroke grestore\n", | ||
72 | ps->hatchthick); | ||
73 | } | ||
74 | } | ||
75 | |||
76 | static void ps_setcolour_internal(psdata *ps, int colour, char *suffix) | ||
77 | { | ||
78 | int hatch; | ||
79 | float r, g, b; | ||
80 | |||
81 | print_get_colour(ps->drawing, colour, ps->colour, &hatch, &r, &g, &b); | ||
82 | |||
83 | /* | ||
84 | * Stroking in hatched colours is not permitted. | ||
85 | */ | ||
86 | assert(hatch < 0); | ||
87 | |||
88 | if (ps->colour) | ||
89 | ps_printf(ps, "%g %g %g setrgbcolor%s\n", r, g, b, suffix); | ||
90 | else | ||
91 | ps_printf(ps, "%g setgray%s\n", r, suffix); | ||
92 | } | ||
93 | |||
94 | static void ps_setcolour(psdata *ps, int colour) | ||
95 | { | ||
96 | ps_setcolour_internal(ps, colour, ""); | ||
97 | } | ||
98 | |||
99 | static void ps_stroke(psdata *ps, int colour) | ||
100 | { | ||
101 | ps_setcolour_internal(ps, colour, " stroke"); | ||
102 | } | ||
103 | |||
104 | static void ps_draw_text(void *handle, int x, int y, int fonttype, | ||
105 | int fontsize, int align, int colour, char *text) | ||
106 | { | ||
107 | psdata *ps = (psdata *)handle; | ||
108 | |||
109 | y = ps->ytop - y; | ||
110 | ps_setcolour(ps, colour); | ||
111 | ps_printf(ps, "/%s findfont %d scalefont setfont\n", | ||
112 | fonttype == FONT_FIXED ? "Courier-L1" : "Helvetica-L1", | ||
113 | fontsize); | ||
114 | if (align & ALIGN_VCENTRE) { | ||
115 | ps_printf(ps, "newpath 0 0 moveto (X) true charpath flattenpath" | ||
116 | " pathbbox\n" | ||
117 | "3 -1 roll add 2 div %d exch sub %d exch moveto pop pop\n", | ||
118 | y, x); | ||
119 | } else { | ||
120 | ps_printf(ps, "%d %d moveto\n", x, y); | ||
121 | } | ||
122 | ps_printf(ps, "("); | ||
123 | while (*text) { | ||
124 | if (*text == '\\' || *text == '(' || *text == ')') | ||
125 | ps_printf(ps, "\\"); | ||
126 | ps_printf(ps, "%c", *text); | ||
127 | text++; | ||
128 | } | ||
129 | ps_printf(ps, ") "); | ||
130 | if (align & (ALIGN_HCENTRE | ALIGN_HRIGHT)) | ||
131 | ps_printf(ps, "dup stringwidth pop %sneg 0 rmoveto show\n", | ||
132 | (align & ALIGN_HCENTRE) ? "2 div " : ""); | ||
133 | else | ||
134 | ps_printf(ps, "show\n"); | ||
135 | } | ||
136 | |||
137 | static void ps_draw_rect(void *handle, int x, int y, int w, int h, int colour) | ||
138 | { | ||
139 | psdata *ps = (psdata *)handle; | ||
140 | |||
141 | y = ps->ytop - y; | ||
142 | /* | ||
143 | * Offset by half a pixel for the exactness requirement. | ||
144 | */ | ||
145 | ps_printf(ps, "newpath %g %g moveto %d 0 rlineto 0 %d rlineto" | ||
146 | " %d 0 rlineto closepath\n", x - 0.5, y + 0.5, w, -h, -w); | ||
147 | ps_fill(ps, colour); | ||
148 | } | ||
149 | |||
150 | static void ps_draw_line(void *handle, int x1, int y1, int x2, int y2, | ||
151 | int colour) | ||
152 | { | ||
153 | psdata *ps = (psdata *)handle; | ||
154 | |||
155 | y1 = ps->ytop - y1; | ||
156 | y2 = ps->ytop - y2; | ||
157 | ps_printf(ps, "newpath %d %d moveto %d %d lineto\n", x1, y1, x2, y2); | ||
158 | ps_stroke(ps, colour); | ||
159 | } | ||
160 | |||
161 | static void ps_draw_polygon(void *handle, int *coords, int npoints, | ||
162 | int fillcolour, int outlinecolour) | ||
163 | { | ||
164 | psdata *ps = (psdata *)handle; | ||
165 | |||
166 | int i; | ||
167 | |||
168 | ps_printf(ps, "newpath %d %d moveto\n", coords[0], ps->ytop - coords[1]); | ||
169 | |||
170 | for (i = 1; i < npoints; i++) | ||
171 | ps_printf(ps, "%d %d lineto\n", coords[i*2], ps->ytop - coords[i*2+1]); | ||
172 | |||
173 | ps_printf(ps, "closepath\n"); | ||
174 | |||
175 | if (fillcolour >= 0) { | ||
176 | ps_printf(ps, "gsave\n"); | ||
177 | ps_fill(ps, fillcolour); | ||
178 | ps_printf(ps, "grestore\n"); | ||
179 | } | ||
180 | ps_stroke(ps, outlinecolour); | ||
181 | } | ||
182 | |||
183 | static void ps_draw_circle(void *handle, int cx, int cy, int radius, | ||
184 | int fillcolour, int outlinecolour) | ||
185 | { | ||
186 | psdata *ps = (psdata *)handle; | ||
187 | |||
188 | cy = ps->ytop - cy; | ||
189 | |||
190 | ps_printf(ps, "newpath %d %d %d 0 360 arc closepath\n", cx, cy, radius); | ||
191 | |||
192 | if (fillcolour >= 0) { | ||
193 | ps_printf(ps, "gsave\n"); | ||
194 | ps_fill(ps, fillcolour); | ||
195 | ps_printf(ps, "grestore\n"); | ||
196 | } | ||
197 | ps_stroke(ps, outlinecolour); | ||
198 | } | ||
199 | |||
200 | static void ps_unclip(void *handle) | ||
201 | { | ||
202 | psdata *ps = (psdata *)handle; | ||
203 | |||
204 | assert(ps->clipped); | ||
205 | ps_printf(ps, "grestore\n"); | ||
206 | ps->clipped = FALSE; | ||
207 | } | ||
208 | |||
209 | static void ps_clip(void *handle, int x, int y, int w, int h) | ||
210 | { | ||
211 | psdata *ps = (psdata *)handle; | ||
212 | |||
213 | if (ps->clipped) | ||
214 | ps_unclip(ps); | ||
215 | |||
216 | y = ps->ytop - y; | ||
217 | /* | ||
218 | * Offset by half a pixel for the exactness requirement. | ||
219 | */ | ||
220 | ps_printf(ps, "gsave\n"); | ||
221 | ps_printf(ps, "newpath %g %g moveto %d 0 rlineto 0 %d rlineto" | ||
222 | " %d 0 rlineto closepath\n", x - 0.5, y + 0.5, w, -h, -w); | ||
223 | ps_printf(ps, "clip\n"); | ||
224 | ps->clipped = TRUE; | ||
225 | } | ||
226 | |||
227 | static void ps_line_width(void *handle, float width) | ||
228 | { | ||
229 | psdata *ps = (psdata *)handle; | ||
230 | |||
231 | ps_printf(ps, "%g setlinewidth\n", width); | ||
232 | } | ||
233 | |||
234 | static void ps_line_dotted(void *handle, int dotted) | ||
235 | { | ||
236 | psdata *ps = (psdata *)handle; | ||
237 | |||
238 | if (dotted) { | ||
239 | ps_printf(ps, "[ currentlinewidth 3 mul ] 0 setdash\n"); | ||
240 | } else { | ||
241 | ps_printf(ps, "[ ] 0 setdash\n"); | ||
242 | } | ||
243 | } | ||
244 | |||
245 | static char *ps_text_fallback(void *handle, const char *const *strings, | ||
246 | int nstrings) | ||
247 | { | ||
248 | /* | ||
249 | * We can handle anything in ISO 8859-1, and we'll manually | ||
250 | * translate it out of UTF-8 for the purpose. | ||
251 | */ | ||
252 | int i, maxlen; | ||
253 | char *ret; | ||
254 | |||
255 | maxlen = 0; | ||
256 | for (i = 0; i < nstrings; i++) { | ||
257 | int len = strlen(strings[i]); | ||
258 | if (maxlen < len) maxlen = len; | ||
259 | } | ||
260 | |||
261 | ret = snewn(maxlen + 1, char); | ||
262 | |||
263 | for (i = 0; i < nstrings; i++) { | ||
264 | const char *p = strings[i]; | ||
265 | char *q = ret; | ||
266 | |||
267 | while (*p) { | ||
268 | int c = (unsigned char)*p++; | ||
269 | if (c < 0x80) { | ||
270 | *q++ = c; /* ASCII */ | ||
271 | } else if ((c == 0xC2 || c == 0xC3) && (*p & 0xC0) == 0x80) { | ||
272 | *q++ = (c << 6) | (*p++ & 0x3F); /* top half of 8859-1 */ | ||
273 | } else { | ||
274 | break; | ||
275 | } | ||
276 | } | ||
277 | |||
278 | if (!*p) { | ||
279 | *q = '\0'; | ||
280 | return ret; | ||
281 | } | ||
282 | } | ||
283 | |||
284 | assert(!"Should never reach here"); | ||
285 | return NULL; | ||
286 | } | ||
287 | |||
288 | static void ps_begin_doc(void *handle, int pages) | ||
289 | { | ||
290 | psdata *ps = (psdata *)handle; | ||
291 | |||
292 | fputs("%!PS-Adobe-3.0\n", ps->fp); | ||
293 | fputs("%%Creator: Simon Tatham's Portable Puzzle Collection\n", ps->fp); | ||
294 | fputs("%%DocumentData: Clean7Bit\n", ps->fp); | ||
295 | fputs("%%LanguageLevel: 1\n", ps->fp); | ||
296 | fprintf(ps->fp, "%%%%Pages: %d\n", pages); | ||
297 | fputs("%%DocumentNeededResources:\n", ps->fp); | ||
298 | fputs("%%+ font Helvetica\n", ps->fp); | ||
299 | fputs("%%+ font Courier\n", ps->fp); | ||
300 | fputs("%%EndComments\n", ps->fp); | ||
301 | fputs("%%BeginSetup\n", ps->fp); | ||
302 | fputs("%%IncludeResource: font Helvetica\n", ps->fp); | ||
303 | fputs("%%IncludeResource: font Courier\n", ps->fp); | ||
304 | fputs("%%EndSetup\n", ps->fp); | ||
305 | fputs("%%BeginProlog\n", ps->fp); | ||
306 | /* | ||
307 | * Re-encode Helvetica and Courier into ISO-8859-1, which gives | ||
308 | * us times and divide signs - and also (according to the | ||
309 | * Language Reference Manual) a bonus in that the ASCII '-' code | ||
310 | * point now points to a minus sign instead of a hyphen. | ||
311 | */ | ||
312 | fputs("/Helvetica findfont " /* get the font dictionary */ | ||
313 | "dup maxlength dict dup begin " /* create and open a new dict */ | ||
314 | "exch " /* move the original font to top of stack */ | ||
315 | "{1 index /FID ne {def} {pop pop} ifelse} forall " | ||
316 | /* copy everything except FID */ | ||
317 | "/Encoding ISOLatin1Encoding def " | ||
318 | /* set the thing we actually wanted to change */ | ||
319 | "/FontName /Helvetica-L1 def " /* set a new font name */ | ||
320 | "FontName end exch definefont" /* and define the font */ | ||
321 | "\n", ps->fp); | ||
322 | fputs("/Courier findfont " /* get the font dictionary */ | ||
323 | "dup maxlength dict dup begin " /* create and open a new dict */ | ||
324 | "exch " /* move the original font to top of stack */ | ||
325 | "{1 index /FID ne {def} {pop pop} ifelse} forall " | ||
326 | /* copy everything except FID */ | ||
327 | "/Encoding ISOLatin1Encoding def " | ||
328 | /* set the thing we actually wanted to change */ | ||
329 | "/FontName /Courier-L1 def " /* set a new font name */ | ||
330 | "FontName end exch definefont" /* and define the font */ | ||
331 | "\n", ps->fp); | ||
332 | fputs("%%EndProlog\n", ps->fp); | ||
333 | } | ||
334 | |||
335 | static void ps_begin_page(void *handle, int number) | ||
336 | { | ||
337 | psdata *ps = (psdata *)handle; | ||
338 | |||
339 | fprintf(ps->fp, "%%%%Page: %d %d\ngsave save\n%g dup scale\n", | ||
340 | number, number, 72.0 / 25.4); | ||
341 | } | ||
342 | |||
343 | static void ps_begin_puzzle(void *handle, float xm, float xc, | ||
344 | float ym, float yc, int pw, int ph, float wmm) | ||
345 | { | ||
346 | psdata *ps = (psdata *)handle; | ||
347 | |||
348 | fprintf(ps->fp, "gsave\n" | ||
349 | "clippath flattenpath pathbbox pop pop translate\n" | ||
350 | "clippath flattenpath pathbbox 4 2 roll pop pop\n" | ||
351 | "exch %g mul %g add exch dup %g mul %g add sub translate\n" | ||
352 | "%g dup scale\n" | ||
353 | "0 -%d translate\n", xm, xc, ym, yc, wmm/pw, ph); | ||
354 | ps->ytop = ph; | ||
355 | ps->clipped = FALSE; | ||
356 | ps->gamewidth = pw; | ||
357 | ps->gameheight = ph; | ||
358 | ps->hatchthick = 0.2 * pw / wmm; | ||
359 | ps->hatchspace = 1.0 * pw / wmm; | ||
360 | } | ||
361 | |||
362 | static void ps_end_puzzle(void *handle) | ||
363 | { | ||
364 | psdata *ps = (psdata *)handle; | ||
365 | |||
366 | fputs("grestore\n", ps->fp); | ||
367 | } | ||
368 | |||
369 | static void ps_end_page(void *handle, int number) | ||
370 | { | ||
371 | psdata *ps = (psdata *)handle; | ||
372 | |||
373 | fputs("restore grestore showpage\n", ps->fp); | ||
374 | } | ||
375 | |||
376 | static void ps_end_doc(void *handle) | ||
377 | { | ||
378 | psdata *ps = (psdata *)handle; | ||
379 | |||
380 | fputs("%%EOF\n", ps->fp); | ||
381 | } | ||
382 | |||
383 | static const struct drawing_api ps_drawing = { | ||
384 | ps_draw_text, | ||
385 | ps_draw_rect, | ||
386 | ps_draw_line, | ||
387 | ps_draw_polygon, | ||
388 | ps_draw_circle, | ||
389 | NULL /* draw_update */, | ||
390 | ps_clip, | ||
391 | ps_unclip, | ||
392 | NULL /* start_draw */, | ||
393 | NULL /* end_draw */, | ||
394 | NULL /* status_bar */, | ||
395 | NULL /* blitter_new */, | ||
396 | NULL /* blitter_free */, | ||
397 | NULL /* blitter_save */, | ||
398 | NULL /* blitter_load */, | ||
399 | ps_begin_doc, | ||
400 | ps_begin_page, | ||
401 | ps_begin_puzzle, | ||
402 | ps_end_puzzle, | ||
403 | ps_end_page, | ||
404 | ps_end_doc, | ||
405 | ps_line_width, | ||
406 | ps_line_dotted, | ||
407 | ps_text_fallback, | ||
408 | }; | ||
409 | |||
410 | psdata *ps_init(FILE *outfile, int colour) | ||
411 | { | ||
412 | psdata *ps = snew(psdata); | ||
413 | |||
414 | ps->fp = outfile; | ||
415 | ps->colour = colour; | ||
416 | ps->ytop = 0; | ||
417 | ps->clipped = FALSE; | ||
418 | ps->hatchthick = ps->hatchspace = ps->gamewidth = ps->gameheight = 0; | ||
419 | ps->drawing = drawing_new(&ps_drawing, NULL, ps); | ||
420 | |||
421 | return ps; | ||
422 | } | ||
423 | |||
424 | void ps_free(psdata *ps) | ||
425 | { | ||
426 | drawing_free(ps->drawing); | ||
427 | sfree(ps); | ||
428 | } | ||
429 | |||
430 | drawing *ps_drawing_api(psdata *ps) | ||
431 | { | ||
432 | return ps->drawing; | ||
433 | } | ||