43341922 |
1 | /* |
2 | * Paper printing pre-backend for Halibut. |
3 | * |
4 | * This module does all the processing common to both PostScript |
5 | * and PDF output: selecting fonts, line wrapping and page breaking |
6 | * in accordance with font metrics, laying out the contents and |
7 | * index pages, generally doing all the page layout. After this, |
8 | * bk_ps.c and bk_pdf.c should only need to do linear translations |
9 | * into their literal output format. |
10 | */ |
11 | |
12 | /* |
9a8dc6b1 |
13 | * TODO in future work: |
43341922 |
14 | * |
15 | * - linearised PDF, perhaps? |
16 | * |
e48dc052 |
17 | * - we should use PDFDocEncoding or Unicode for outline strings, |
18 | * now that I actually know how to do them. Probably easiest if |
19 | * I do this _after_ bringing in libcharset, since I can simply |
20 | * supply PDFDocEncoding in there. |
21 | * |
43341922 |
22 | * - I'm uncertain of whether I need to include a ToUnicode CMap |
23 | * in each of my font definitions in PDF. Currently things (by |
24 | * which I mean cut and paste out of acroread) seem to be |
25 | * working fairly happily without it, but I don't know. |
26 | * |
9a8dc6b1 |
27 | * - rather than the ugly aux_text mechanism for rendering chapter |
28 | * titles, we could actually build the correct word list and |
29 | * wrap it as a whole. |
30 | * |
31 | * - get vertical font metrics and use them to position the PDF |
32 | * xref boxes more pleasantly |
33 | * |
43341922 |
34 | * - configurability |
9a8dc6b1 |
35 | * * page header and footer should be configurable; we should |
36 | * be able to shift the page number elsewhere, and add other |
37 | * things such as the current chapter/section title and fixed |
38 | * text |
39 | * * remove the fixed mapping from heading levels to heading |
40 | * styles; offer a menu of styles from which the user can |
41 | * choose at every heading level |
42 | * * first-line indent in paragraphs |
dd567011 |
43 | * * fixed text: `Contents', `Index', the colon-space and full |
44 | * stop in chapter title constructions |
9a8dc6b1 |
45 | * * configurable location of contents? |
46 | * * certainly configurably _remove_ the contents, and possibly |
47 | * also the index |
48 | * * double-sided document switch? |
49 | * + means you have two header/footer formats which |
50 | * alternate |
51 | * + and means that mandatory page breaks before chapter |
52 | * titles should include a blank page if necessary to |
53 | * start the next section to a right-hand page |
43341922 |
54 | * |
55 | * - title pages |
9a8dc6b1 |
56 | * |
57 | * - ability to import other Type 1 fonts |
58 | * * we need to parse the font to extract its metrics |
59 | * * then we pass the font bodily to both PS and PDF so it can |
60 | * be included in the output file |
266a539f |
61 | * |
62 | * - character substitution for better typography? |
63 | * * fi, fl, ffi, ffl ligatures |
64 | * * use real ellipsis rather than ... |
65 | * * a hyphen in a word by itself might prefer to be an en-dash |
66 | * * (Americans might even want a convenient way to use an |
67 | * em-dash) |
09358aa7 |
68 | * * DON'T DO ANY OF THE ABOVE WITHIN \c OR \cw! |
266a539f |
69 | * * substituting `minus' for `hyphen' in the standard encoding |
70 | * is probably preferable in Courier, though certainly not in |
71 | * the main text font |
72 | * * if I do do this lot, I'm rather inclined to at least try |
73 | * to think up a configurable way to do it so that Americans |
74 | * can do em-dash tricks without my intervention and other |
75 | * people can do other odd things too. |
43341922 |
76 | */ |
77 | |
78 | #include <assert.h> |
79 | #include <stdio.h> |
dd567011 |
80 | #include <stdarg.h> |
43341922 |
81 | |
82 | #include "halibut.h" |
83 | #include "paper.h" |
84 | |
be76d597 |
85 | typedef struct paper_conf_Tag paper_conf; |
c6536773 |
86 | typedef struct paper_idx_Tag paper_idx; |
be76d597 |
87 | |
88 | struct paper_conf_Tag { |
89 | int paper_width; |
90 | int paper_height; |
91 | int left_margin; |
92 | int top_margin; |
93 | int right_margin; |
94 | int bottom_margin; |
95 | int indent_list_bullet; |
dd567011 |
96 | int indent_list_after; |
be76d597 |
97 | int indent_list; |
98 | int indent_quote; |
99 | int base_leading; |
100 | int base_para_spacing; |
101 | int chapter_top_space; |
102 | int sect_num_left_space; |
103 | int chapter_underline_depth; |
104 | int chapter_underline_thickness; |
105 | int rule_thickness; |
106 | int base_font_size; |
2bfd1b76 |
107 | int contents_indent_step; |
108 | int contents_margin; |
109 | int leader_separation; |
c6536773 |
110 | int index_gutter; |
111 | int index_cols; |
112 | int index_minsep; |
9a8dc6b1 |
113 | int pagenum_fontsize; |
114 | int footer_distance; |
dd567011 |
115 | wchar_t *lquote, *rquote, *bullet; |
be76d597 |
116 | /* These are derived from the above */ |
117 | int base_width; |
118 | int page_height; |
c6536773 |
119 | int index_colwidth; |
be76d597 |
120 | /* Fonts used in the configuration */ |
121 | font_data *tr, *ti, *hr, *hi, *cr, *co, *cb; |
122 | }; |
123 | |
c6536773 |
124 | struct paper_idx_Tag { |
125 | /* |
126 | * Word list giving the page numbers on which this index entry |
127 | * appears. Also the last word in the list, for ease of |
128 | * construction. |
129 | */ |
130 | word *words; |
131 | word *lastword; |
132 | /* |
133 | * The last page added to the list (so we can ensure we don't |
134 | * add one twice). |
135 | */ |
136 | page_data *lastpage; |
137 | }; |
138 | |
3f3d1acc |
139 | enum { |
140 | word_PageXref = word_NotWordType + 1 |
141 | }; |
142 | |
43341922 |
143 | static font_data *make_std_font(font_list *fontlist, char const *name); |
144 | static void wrap_paragraph(para_data *pdata, word *words, |
dd567011 |
145 | int w, int i1, int i2, paper_conf *conf); |
43341922 |
146 | static page_data *page_breaks(line_data *first, line_data *last, |
c6536773 |
147 | int page_height, int ncols, int headspace); |
2bfd1b76 |
148 | static int render_string(page_data *page, font_data *font, int fontsize, |
149 | int x, int y, wchar_t *str); |
150 | static int render_line(line_data *ldata, int left_x, int top_y, |
dd567011 |
151 | xref_dest *dest, keywordlist *keywords, indexdata *idx, |
152 | paper_conf *conf); |
c6536773 |
153 | static void render_para(para_data *pdata, paper_conf *conf, |
154 | keywordlist *keywords, indexdata *idx, |
155 | paragraph *index_placeholder, page_data *index_page); |
9a8dc6b1 |
156 | static int string_width(font_data *font, wchar_t const *string, int *errs); |
dd567011 |
157 | static int paper_width_simple(para_data *pdata, word *text, paper_conf *conf); |
be76d597 |
158 | static para_data *code_paragraph(int indent, word *words, paper_conf *conf); |
159 | static para_data *rule_paragraph(int indent, paper_conf *conf); |
23765aeb |
160 | static void add_rect_to_page(page_data *page, int x, int y, int w, int h); |
2bfd1b76 |
161 | static para_data *make_para_data(int ptype, int paux, int indent, int rmargin, |
be76d597 |
162 | word *pkwtext, word *pkwtext2, word *pwords, |
163 | paper_conf *conf); |
164 | static void standard_line_spacing(para_data *pdata, paper_conf *conf); |
165 | static wchar_t *prepare_outline_title(word *first, wchar_t *separator, |
166 | word *second); |
2bfd1b76 |
167 | static word *fake_word(wchar_t *text); |
c6536773 |
168 | static word *fake_space_word(void); |
3f3d1acc |
169 | static word *fake_page_ref(page_data *page); |
170 | static word *fake_end_ref(void); |
2bfd1b76 |
171 | static word *prepare_contents_title(word *first, wchar_t *separator, |
172 | word *second); |
c6536773 |
173 | static void fold_into_page(page_data *dest, page_data *src, int right_shift); |
43341922 |
174 | |
dd567011 |
175 | static int fonts_ok(wchar_t *string, ...) |
176 | { |
177 | font_data *font; |
178 | va_list ap; |
179 | int ret = TRUE; |
180 | |
181 | va_start(ap, string); |
182 | while ( (font = va_arg(ap, font_data *)) != NULL) { |
183 | int errs; |
184 | (void) string_width(font, string, &errs); |
185 | if (errs) { |
186 | ret = FALSE; |
187 | break; |
188 | } |
189 | } |
190 | va_end(ap); |
191 | |
192 | return ret; |
193 | } |
194 | |
195 | static paper_conf paper_configure(paragraph *source, font_list *fontlist) { |
196 | paragraph *p; |
197 | paper_conf ret; |
198 | |
199 | /* |
200 | * Defaults. |
201 | */ |
17c71b41 |
202 | ret.paper_width = 595 * UNITS_PER_PT; |
203 | ret.paper_height = 841 * UNITS_PER_PT; |
204 | ret.left_margin = 72 * UNITS_PER_PT; |
205 | ret.top_margin = 72 * UNITS_PER_PT; |
206 | ret.right_margin = 72 * UNITS_PER_PT; |
207 | ret.bottom_margin = 108 * UNITS_PER_PT; |
208 | ret.indent_list_bullet = 6 * UNITS_PER_PT; |
209 | ret.indent_list_after = 18 * UNITS_PER_PT; |
210 | ret.indent_quote = 18 * UNITS_PER_PT; |
211 | ret.base_leading = UNITS_PER_PT; |
212 | ret.base_para_spacing = 10 * UNITS_PER_PT; |
213 | ret.chapter_top_space = 72 * UNITS_PER_PT; |
214 | ret.sect_num_left_space = 12 * UNITS_PER_PT; |
215 | ret.chapter_underline_depth = 14 * UNITS_PER_PT; |
216 | ret.chapter_underline_thickness = 3 * UNITS_PER_PT; |
217 | ret.rule_thickness = 1 * UNITS_PER_PT; |
dd567011 |
218 | ret.base_font_size = 12; |
17c71b41 |
219 | ret.contents_indent_step = 24 * UNITS_PER_PT; |
220 | ret.contents_margin = 84 * UNITS_PER_PT; |
221 | ret.leader_separation = 12 * UNITS_PER_PT; |
222 | ret.index_gutter = 36 * UNITS_PER_PT; |
dd567011 |
223 | ret.index_cols = 2; |
17c71b41 |
224 | ret.index_minsep = 18 * UNITS_PER_PT; |
dd567011 |
225 | ret.pagenum_fontsize = 12; |
17c71b41 |
226 | ret.footer_distance = 32 * UNITS_PER_PT; |
dd567011 |
227 | ret.lquote = L"\x2018\0\x2019\0'\0'\0\0"; |
228 | ret.rquote = uadv(ret.lquote); |
229 | ret.bullet = L"\x2022\0-\0\0"; |
230 | |
231 | /* |
232 | * Two-pass configuration so that we can pick up global config |
233 | * (e.g. `quotes') before having it overridden by specific |
234 | * config (`paper-quotes'), irrespective of the order in which |
235 | * they occur. |
236 | */ |
237 | for (p = source; p; p = p->next) { |
238 | if (p->type == para_Config) { |
239 | if (!ustricmp(p->keyword, L"quotes")) { |
240 | if (*uadv(p->keyword) && *uadv(uadv(p->keyword))) { |
241 | ret.lquote = uadv(p->keyword); |
242 | ret.rquote = uadv(ret.lquote); |
243 | } |
244 | } |
245 | } |
246 | } |
247 | |
248 | for (p = source; p; p = p->next) { |
249 | p->private_data = NULL; |
250 | if (p->type == para_Config) { |
251 | if (!ustricmp(p->keyword, L"paper-quotes")) { |
252 | if (*uadv(p->keyword) && *uadv(uadv(p->keyword))) { |
253 | ret.lquote = uadv(p->keyword); |
254 | ret.rquote = uadv(ret.lquote); |
255 | } |
256 | } else if (!ustricmp(p->keyword, L"paper-bullet")) { |
257 | ret.bullet = uadv(p->keyword); |
258 | } else if (!ustricmp(p->keyword, L"paper-page-width")) { |
259 | ret.paper_width = |
17c71b41 |
260 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
261 | } else if (!ustricmp(p->keyword, L"paper-page-height")) { |
262 | ret.paper_height = |
17c71b41 |
263 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
264 | } else if (!ustricmp(p->keyword, L"paper-left-margin")) { |
265 | ret.left_margin = |
17c71b41 |
266 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
267 | } else if (!ustricmp(p->keyword, L"paper-top-margin")) { |
268 | ret.top_margin = |
17c71b41 |
269 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
270 | } else if (!ustricmp(p->keyword, L"paper-right-margin")) { |
271 | ret.right_margin = |
17c71b41 |
272 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
273 | } else if (!ustricmp(p->keyword, L"paper-bottom-margin")) { |
274 | ret.bottom_margin = |
17c71b41 |
275 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
276 | } else if (!ustricmp(p->keyword, L"paper-list-indent")) { |
277 | ret.indent_list_bullet = |
17c71b41 |
278 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
279 | } else if (!ustricmp(p->keyword, L"paper-listitem-indent")) { |
280 | ret.indent_list = |
17c71b41 |
281 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
282 | } else if (!ustricmp(p->keyword, L"paper-quote-indent")) { |
283 | ret.indent_quote = |
17c71b41 |
284 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
285 | } else if (!ustricmp(p->keyword, L"paper-base-leading")) { |
286 | ret.base_leading = |
17c71b41 |
287 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
288 | } else if (!ustricmp(p->keyword, L"paper-base-para-spacing")) { |
289 | ret.base_para_spacing = |
17c71b41 |
290 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
291 | } else if (!ustricmp(p->keyword, L"paper-chapter-top-space")) { |
292 | ret.chapter_top_space = |
17c71b41 |
293 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
294 | } else if (!ustricmp(p->keyword, L"paper-sect-num-left-space")) { |
295 | ret.sect_num_left_space = |
17c71b41 |
296 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
297 | } else if (!ustricmp(p->keyword, L"paper-chapter-underline-depth")) { |
298 | ret.chapter_underline_depth = |
17c71b41 |
299 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
300 | } else if (!ustricmp(p->keyword, L"paper-chapter-underline-thickness")) { |
301 | ret.chapter_underline_thickness = |
17c71b41 |
302 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
303 | } else if (!ustricmp(p->keyword, L"paper-rule-thickness")) { |
304 | ret.rule_thickness = |
17c71b41 |
305 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
306 | } else if (!ustricmp(p->keyword, L"paper-contents-indent-step")) { |
307 | ret.contents_indent_step = |
17c71b41 |
308 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
309 | } else if (!ustricmp(p->keyword, L"paper-contents-margin")) { |
310 | ret.contents_margin = |
17c71b41 |
311 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
312 | } else if (!ustricmp(p->keyword, L"paper-leader-separation")) { |
313 | ret.leader_separation = |
17c71b41 |
314 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
315 | } else if (!ustricmp(p->keyword, L"paper-index-gutter")) { |
316 | ret.index_gutter = |
17c71b41 |
317 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
318 | } else if (!ustricmp(p->keyword, L"paper-index-minsep")) { |
319 | ret.index_minsep = |
17c71b41 |
320 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
321 | } else if (!ustricmp(p->keyword, L"paper-footer-distance")) { |
322 | ret.footer_distance = |
17c71b41 |
323 | (int) 0.5 + FUNITS_PER_PT * utof(uadv(p->keyword)); |
dd567011 |
324 | } else if (!ustricmp(p->keyword, L"paper-base-font-size")) { |
325 | ret.base_font_size = |
326 | utoi(uadv(p->keyword)); |
327 | } else if (!ustricmp(p->keyword, L"paper-index-columns")) { |
328 | ret.index_cols = |
329 | utoi(uadv(p->keyword)); |
330 | } else if (!ustricmp(p->keyword, L"paper-pagenum-font-size")) { |
331 | ret.pagenum_fontsize = |
332 | utoi(uadv(p->keyword)); |
333 | } |
334 | } |
335 | } |
336 | |
337 | /* |
338 | * Set up the derived fields in the conf structure. |
339 | */ |
340 | |
341 | ret.base_width = |
342 | ret.paper_width - ret.left_margin - ret.right_margin; |
343 | ret.page_height = |
344 | ret.paper_height - ret.top_margin - ret.bottom_margin; |
345 | ret.indent_list = ret.indent_list_bullet + ret.indent_list_after; |
346 | ret.index_colwidth = |
347 | (ret.base_width - (ret.index_cols-1) * ret.index_gutter) |
348 | / ret.index_cols; |
349 | |
350 | /* |
351 | * Set up the font structures. |
352 | */ |
353 | ret.tr = make_std_font(fontlist, "Times-Roman"); |
354 | ret.ti = make_std_font(fontlist, "Times-Italic"); |
355 | ret.hr = make_std_font(fontlist, "Helvetica-Bold"); |
356 | ret.hi = make_std_font(fontlist, "Helvetica-BoldOblique"); |
357 | ret.cr = make_std_font(fontlist, "Courier"); |
358 | ret.co = make_std_font(fontlist, "Courier-Oblique"); |
359 | ret.cb = make_std_font(fontlist, "Courier-Bold"); |
360 | |
361 | /* |
362 | * Now process fallbacks on quote characters and bullets. We |
363 | * use string_width() to determine whether all of the relevant |
364 | * fonts contain the same character, and fall back whenever we |
365 | * find a character which not all of them support. |
366 | */ |
367 | |
368 | /* Quote characters need not be supported in the fixed code fonts, |
369 | * but must be in the title and body fonts. */ |
370 | while (*uadv(ret.rquote) && *uadv(uadv(ret.rquote)) && |
371 | (!fonts_ok(ret.lquote, ret.tr, ret.ti, ret.hr, ret.hi, NULL) || |
372 | !fonts_ok(ret.rquote, ret.tr, ret.ti, ret.hr, ret.hi, NULL))) { |
373 | ret.lquote = uadv(ret.rquote); |
374 | ret.rquote = uadv(ret.lquote); |
375 | } |
376 | |
377 | /* The bullet character only needs to be supported in the normal body |
378 | * font (not even in italics). */ |
379 | while (*ret.bullet && *uadv(ret.bullet) && |
380 | !fonts_ok(ret.bullet, ret.tr, NULL)) |
381 | ret.bullet = uadv(ret.bullet); |
382 | |
383 | return ret; |
384 | } |
385 | |
43341922 |
386 | void *paper_pre_backend(paragraph *sourceform, keywordlist *keywords, |
387 | indexdata *idx) { |
388 | paragraph *p; |
389 | document *doc; |
2bfd1b76 |
390 | int indent, used_contents; |
be76d597 |
391 | para_data *pdata, *firstpara = NULL, *lastpara = NULL; |
2bfd1b76 |
392 | para_data *firstcont, *lastcont; |
c6536773 |
393 | line_data *firstline, *lastline, *firstcontline, *lastcontline; |
43341922 |
394 | page_data *pages; |
395 | font_list *fontlist; |
dd567011 |
396 | paper_conf *conf, ourconf; |
c6536773 |
397 | int has_index; |
398 | int pagenum; |
399 | paragraph index_placeholder_para; |
400 | page_data *first_index_page; |
43341922 |
401 | |
f1530049 |
402 | fontlist = snew(font_list); |
43341922 |
403 | fontlist->head = fontlist->tail = NULL; |
dd567011 |
404 | |
405 | ourconf = paper_configure(sourceform, fontlist); |
406 | conf = &ourconf; |
43341922 |
407 | |
408 | /* |
c6536773 |
409 | * Set up a data structure to collect page numbers for each |
410 | * index entry. |
411 | */ |
412 | { |
413 | int i; |
414 | indexentry *entry; |
415 | |
416 | has_index = FALSE; |
417 | |
418 | for (i = 0; (entry = index234(idx->entries, i)) != NULL; i++) { |
f1530049 |
419 | paper_idx *pi = snew(paper_idx); |
c6536773 |
420 | |
421 | has_index = TRUE; |
422 | |
423 | pi->words = pi->lastword = NULL; |
424 | pi->lastpage = NULL; |
425 | |
426 | entry->backend_data = pi; |
427 | } |
428 | } |
429 | |
430 | /* |
2bfd1b76 |
431 | * Format the contents entry for each heading. |
432 | */ |
433 | { |
434 | word *contents_title; |
435 | contents_title = fake_word(L"Contents"); |
436 | |
437 | firstcont = make_para_data(para_UnnumberedChapter, 0, 0, 0, |
438 | NULL, NULL, contents_title, conf); |
439 | lastcont = firstcont; |
440 | lastcont->next = NULL; |
441 | firstcontline = firstcont->first; |
442 | lastcontline = lastcont->last; |
443 | for (p = sourceform; p; p = p->next) { |
444 | word *words; |
445 | int indent; |
446 | |
447 | switch (p->type) { |
448 | case para_Chapter: |
449 | case para_Appendix: |
450 | case para_UnnumberedChapter: |
451 | case para_Heading: |
452 | case para_Subsect: |
453 | switch (p->type) { |
454 | case para_Chapter: |
455 | case para_Appendix: |
456 | words = prepare_contents_title(p->kwtext, L": ", p->words); |
457 | indent = 0; |
458 | break; |
459 | case para_UnnumberedChapter: |
460 | words = prepare_contents_title(NULL, NULL, p->words); |
461 | indent = 0; |
462 | break; |
463 | case para_Heading: |
464 | case para_Subsect: |
465 | words = prepare_contents_title(p->kwtext2, L" ", p->words); |
466 | indent = (p->aux + 1) * conf->contents_indent_step; |
467 | break; |
468 | } |
469 | pdata = make_para_data(para_Normal, p->aux, indent, |
470 | conf->contents_margin, |
471 | NULL, NULL, words, conf); |
472 | pdata->next = NULL; |
473 | pdata->contents_entry = p; |
474 | lastcont->next = pdata; |
475 | lastcont = pdata; |
476 | |
477 | /* |
478 | * Link all contents line structures together into |
479 | * a big list. |
480 | */ |
481 | if (pdata->first) { |
482 | if (lastcontline) { |
483 | lastcontline->next = pdata->first; |
484 | pdata->first->prev = lastcontline; |
485 | } else { |
486 | firstcontline = pdata->first; |
487 | pdata->first->prev = NULL; |
488 | } |
489 | lastcontline = pdata->last; |
490 | lastcontline->next = NULL; |
491 | } |
492 | |
493 | break; |
494 | } |
495 | } |
c6536773 |
496 | |
497 | /* |
498 | * And one extra one, for the index. |
499 | */ |
500 | if (has_index) { |
501 | pdata = make_para_data(para_Normal, 0, 0, |
502 | conf->contents_margin, |
503 | NULL, NULL, fake_word(L"Index"), conf); |
504 | pdata->next = NULL; |
505 | pdata->contents_entry = &index_placeholder_para; |
506 | lastcont->next = pdata; |
507 | lastcont = pdata; |
508 | |
509 | if (pdata->first) { |
510 | if (lastcontline) { |
511 | lastcontline->next = pdata->first; |
512 | pdata->first->prev = lastcontline; |
513 | } else { |
514 | firstcontline = pdata->first; |
515 | pdata->first->prev = NULL; |
516 | } |
517 | lastcontline = pdata->last; |
518 | lastcontline->next = NULL; |
519 | } |
520 | } |
2bfd1b76 |
521 | } |
522 | |
523 | /* |
524 | * Do the main paragraph formatting. |
43341922 |
525 | */ |
526 | indent = 0; |
2bfd1b76 |
527 | used_contents = FALSE; |
43341922 |
528 | firstline = lastline = NULL; |
529 | for (p = sourceform; p; p = p->next) { |
530 | p->private_data = NULL; |
531 | |
532 | switch (p->type) { |
533 | /* |
534 | * These paragraph types are either invisible or don't |
535 | * define text in the normal sense. Either way, they |
536 | * don't require wrapping. |
537 | */ |
538 | case para_IM: |
539 | case para_BR: |
43341922 |
540 | case para_Biblio: |
541 | case para_NotParaType: |
542 | case para_Config: |
543 | case para_VersionID: |
544 | case para_NoCite: |
545 | break; |
546 | |
547 | /* |
548 | * These paragraph types don't require wrapping, but |
549 | * they do affect the line width to which we wrap the |
550 | * rest of the paragraphs, so we need to pay attention. |
551 | */ |
552 | case para_LcontPush: |
be76d597 |
553 | indent += conf->indent_list; break; |
43341922 |
554 | case para_LcontPop: |
be76d597 |
555 | indent -= conf->indent_list; assert(indent >= 0); break; |
43341922 |
556 | case para_QuotePush: |
be76d597 |
557 | indent += conf->indent_quote; break; |
43341922 |
558 | case para_QuotePop: |
be76d597 |
559 | indent -= conf->indent_quote; assert(indent >= 0); break; |
43341922 |
560 | |
561 | /* |
562 | * This paragraph type is special. Process it |
563 | * specially. |
564 | */ |
565 | case para_Code: |
be76d597 |
566 | pdata = code_paragraph(indent, p->words, conf); |
515d216b |
567 | p->private_data = pdata; |
39a0cfb9 |
568 | if (pdata->first != pdata->last) { |
569 | pdata->first->penalty_after += 100000; |
570 | pdata->last->penalty_before += 100000; |
571 | } |
43341922 |
572 | break; |
573 | |
574 | /* |
87bd6353 |
575 | * This paragraph is also special. |
576 | */ |
577 | case para_Rule: |
be76d597 |
578 | pdata = rule_paragraph(indent, conf); |
87bd6353 |
579 | p->private_data = pdata; |
580 | break; |
581 | |
582 | /* |
43341922 |
583 | * All of these paragraph types require wrapping in the |
584 | * ordinary way. So we must supply a set of fonts, a |
585 | * line width and auxiliary information (e.g. bullet |
586 | * text) for each one. |
587 | */ |
588 | case para_Chapter: |
589 | case para_Appendix: |
590 | case para_UnnumberedChapter: |
591 | case para_Heading: |
592 | case para_Subsect: |
593 | case para_Normal: |
594 | case para_BiblioCited: |
595 | case para_Bullet: |
596 | case para_NumberedList: |
597 | case para_DescribedThing: |
598 | case para_Description: |
599 | case para_Copyright: |
600 | case para_Title: |
2bfd1b76 |
601 | pdata = make_para_data(p->type, p->aux, indent, 0, |
be76d597 |
602 | p->kwtext, p->kwtext2, p->words, conf); |
43341922 |
603 | |
43341922 |
604 | p->private_data = pdata; |
605 | |
515d216b |
606 | break; |
607 | } |
608 | |
609 | if (p->private_data) { |
610 | pdata = (para_data *)p->private_data; |
611 | |
43341922 |
612 | /* |
2bfd1b76 |
613 | * If this is the first non-title heading, we link the |
614 | * contents section in before it. |
615 | */ |
616 | if (!used_contents && pdata->outline_level > 0) { |
617 | used_contents = TRUE; |
618 | if (lastpara) |
619 | lastpara->next = firstcont; |
620 | else |
621 | firstpara = firstcont; |
622 | lastpara = lastcont; |
623 | assert(lastpara->next == NULL); |
624 | |
625 | if (lastline) { |
626 | lastline->next = firstcontline; |
627 | firstcontline->prev = lastline; |
628 | } else { |
629 | firstline = firstcontline; |
630 | firstcontline->prev = NULL; |
631 | } |
632 | assert(lastcontline != NULL); |
633 | lastline = lastcontline; |
634 | lastline->next = NULL; |
635 | } |
636 | |
637 | /* |
515d216b |
638 | * Link all line structures together into a big list. |
639 | */ |
43341922 |
640 | if (pdata->first) { |
641 | if (lastline) { |
642 | lastline->next = pdata->first; |
643 | pdata->first->prev = lastline; |
644 | } else { |
645 | firstline = pdata->first; |
646 | pdata->first->prev = NULL; |
647 | } |
648 | lastline = pdata->last; |
2bfd1b76 |
649 | lastline->next = NULL; |
43341922 |
650 | } |
be76d597 |
651 | |
652 | /* |
653 | * Link all paragraph structures together similarly. |
654 | */ |
655 | pdata->next = NULL; |
656 | if (lastpara) |
657 | lastpara->next = pdata; |
658 | else |
659 | firstpara = pdata; |
660 | lastpara = pdata; |
43341922 |
661 | } |
662 | } |
663 | |
664 | /* |
665 | * Now we have an enormous linked list of every line of text in |
666 | * the document. Break it up into pages. |
667 | */ |
c6536773 |
668 | pages = page_breaks(firstline, lastline, conf->page_height, 0, 0); |
43341922 |
669 | |
670 | /* |
2bfd1b76 |
671 | * Number the pages. |
672 | */ |
673 | { |
c6536773 |
674 | char buf[40]; |
2bfd1b76 |
675 | page_data *page; |
c6536773 |
676 | |
677 | pagenum = 0; |
678 | |
2bfd1b76 |
679 | for (page = pages; page; page = page->next) { |
c6536773 |
680 | sprintf(buf, "%d", ++pagenum); |
e4ea58f8 |
681 | page->number = ufroma_dup(buf, CS_ASCII); |
2bfd1b76 |
682 | } |
c6536773 |
683 | |
684 | if (has_index) { |
f1530049 |
685 | first_index_page = snew(page_data); |
c6536773 |
686 | first_index_page->next = first_index_page->prev = NULL; |
687 | first_index_page->first_line = NULL; |
688 | first_index_page->last_line = NULL; |
689 | first_index_page->first_text = first_index_page->last_text = NULL; |
690 | first_index_page->first_xref = first_index_page->last_xref = NULL; |
691 | first_index_page->first_rect = first_index_page->last_rect = NULL; |
692 | |
693 | /* And don't forget the as-yet-uncreated index. */ |
694 | sprintf(buf, "%d", ++pagenum); |
e4ea58f8 |
695 | first_index_page->number = ufroma_dup(buf, CS_ASCII); |
c6536773 |
696 | } |
2bfd1b76 |
697 | } |
698 | |
699 | /* |
43341922 |
700 | * Now we're ready to actually lay out the pages. We do this by |
701 | * looping over _paragraphs_, since we may need to track cross- |
702 | * references between lines and even across pages. |
703 | */ |
c6536773 |
704 | for (pdata = firstpara; pdata; pdata = pdata->next) |
705 | render_para(pdata, conf, keywords, idx, |
706 | &index_placeholder_para, first_index_page); |
707 | |
708 | /* |
709 | * Now we've laid out the main body pages, we should have |
710 | * acquired a full set of page numbers for the index. |
711 | */ |
712 | if (has_index) { |
713 | int i; |
714 | indexentry *entry; |
715 | word *index_title; |
716 | para_data *firstidx, *lastidx; |
717 | line_data *firstidxline, *lastidxline, *ldata; |
718 | page_data *ipages, *ipages2, *page; |
a0768d17 |
719 | |
c6536773 |
720 | /* |
721 | * Create a set of paragraphs for the index. |
722 | */ |
723 | index_title = fake_word(L"Index"); |
724 | |
725 | firstidx = make_para_data(para_UnnumberedChapter, 0, 0, 0, |
726 | NULL, NULL, index_title, conf); |
727 | lastidx = firstidx; |
728 | lastidx->next = NULL; |
729 | firstidxline = firstidx->first; |
730 | lastidxline = lastidx->last; |
731 | for (i = 0; (entry = index234(idx->entries, i)) != NULL; i++) { |
732 | paper_idx *pi = (paper_idx *)entry->backend_data; |
733 | para_data *text, *pages; |
734 | |
34d8cc1c |
735 | if (!pi->words) |
736 | continue; |
737 | |
c6536773 |
738 | text = make_para_data(para_Normal, 0, 0, |
739 | conf->base_width - conf->index_colwidth, |
740 | NULL, NULL, entry->text, conf); |
741 | |
742 | pages = make_para_data(para_Normal, 0, 0, |
743 | conf->base_width - conf->index_colwidth, |
744 | NULL, NULL, pi->words, conf); |
745 | |
746 | text->justification = LEFT; |
747 | pages->justification = RIGHT; |
748 | text->last->space_after = pages->first->space_before = |
749 | conf->base_leading / 2; |
750 | |
751 | pages->last->space_after = text->first->space_before = |
752 | conf->base_leading; |
753 | |
754 | assert(text->first); |
755 | assert(pages->first); |
756 | assert(lastidxline); |
757 | assert(lastidx); |
a0768d17 |
758 | |
a0768d17 |
759 | /* |
c6536773 |
760 | * If feasible, fold the two halves of the index entry |
761 | * together. |
a0768d17 |
762 | */ |
c6536773 |
763 | if (text->last->real_shortfall + pages->first->real_shortfall > |
764 | conf->index_colwidth + conf->index_minsep) { |
765 | text->last->space_after = -1; |
766 | pages->first->space_before = -pages->first->line_height+1; |
a0768d17 |
767 | } |
768 | |
c6536773 |
769 | lastidx->next = text; |
770 | text->next = pages; |
771 | pages->next = NULL; |
772 | lastidx = pages; |
773 | |
774 | /* |
775 | * Link all index line structures together into |
776 | * a big list. |
777 | */ |
778 | text->last->next = pages->first; |
779 | pages->first->prev = text->last; |
780 | |
781 | lastidxline->next = text->first; |
782 | text->first->prev = lastidxline; |
783 | |
784 | lastidxline = pages->last; |
785 | |
786 | /* |
787 | * Breaking an index entry anywhere is so bad that I |
788 | * think I'm going to forbid it totally. |
789 | */ |
790 | for (ldata = text->first; ldata && ldata->next; |
791 | ldata = ldata->next) { |
792 | ldata->next->space_before += ldata->space_after + 1; |
793 | ldata->space_after = -1; |
794 | } |
be76d597 |
795 | } |
87bd6353 |
796 | |
be76d597 |
797 | /* |
c6536773 |
798 | * Now break the index into pages. |
2bfd1b76 |
799 | */ |
c6536773 |
800 | ipages = page_breaks(firstidxline, firstidxline, conf->page_height, |
801 | 0, 0); |
802 | ipages2 = page_breaks(firstidxline->next, lastidxline, |
803 | conf->page_height, |
804 | conf->index_cols, |
805 | firstidxline->space_before + |
806 | firstidxline->line_height + |
807 | firstidxline->space_after); |
2bfd1b76 |
808 | |
c6536773 |
809 | /* |
810 | * This will have put each _column_ of the index on a |
811 | * separate page, which isn't what we want. Fold the pages |
812 | * back together. |
813 | */ |
814 | page = ipages2; |
815 | while (page) { |
816 | int i; |
817 | |
818 | for (i = 1; i < conf->index_cols; i++) |
819 | if (page->next) { |
820 | page_data *tpage; |
821 | |
822 | fold_into_page(page, page->next, |
823 | i * (conf->index_colwidth + |
824 | conf->index_gutter)); |
825 | tpage = page->next; |
826 | page->next = page->next->next; |
827 | if (page->next) |
828 | page->next->prev = page; |
829 | sfree(tpage); |
830 | } |
2bfd1b76 |
831 | |
c6536773 |
832 | page = page->next; |
2bfd1b76 |
833 | } |
c6536773 |
834 | /* Also fold the heading on to the same page as the index items. */ |
835 | fold_into_page(ipages, ipages2, 0); |
836 | ipages->next = ipages2->next; |
837 | if (ipages->next) |
838 | ipages->next->prev = ipages; |
839 | sfree(ipages2); |
840 | fold_into_page(first_index_page, ipages, 0); |
841 | first_index_page->next = ipages->next; |
842 | if (first_index_page->next) |
843 | first_index_page->next->prev = first_index_page; |
844 | sfree(ipages); |
845 | ipages = first_index_page; |
2bfd1b76 |
846 | |
847 | /* |
c6536773 |
848 | * Number the index pages, except the already-numbered |
849 | * first one. |
be76d597 |
850 | */ |
c6536773 |
851 | for (page = ipages->next; page; page = page->next) { |
852 | char buf[40]; |
853 | sprintf(buf, "%d", ++pagenum); |
e4ea58f8 |
854 | page->number = ufroma_dup(buf, CS_ASCII); |
43341922 |
855 | } |
c6536773 |
856 | |
857 | /* |
858 | * Render the index pages. |
859 | */ |
860 | for (pdata = firstidx; pdata; pdata = pdata->next) |
861 | render_para(pdata, conf, keywords, idx, |
862 | &index_placeholder_para, first_index_page); |
863 | |
864 | /* |
865 | * Link the index page list on to the end of the main page |
866 | * list. |
867 | */ |
868 | if (!pages) |
869 | pages = ipages; |
870 | else { |
871 | for (page = pages; page->next; page = page->next); |
872 | page->next = ipages; |
873 | } |
874 | |
875 | /* |
876 | * Same with the paragraph list, which will cause the index |
877 | * to be mentioned in the document outline. |
878 | */ |
879 | if (!firstpara) |
880 | firstpara = firstidx; |
881 | else |
882 | lastpara->next = firstidx; |
883 | lastpara = lastidx; |
43341922 |
884 | } |
885 | |
f0e51ce1 |
886 | /* |
9a8dc6b1 |
887 | * Draw the headers and footers. |
888 | * |
889 | * FIXME: this should be fully configurable, but for the moment |
890 | * I'm just going to put in page numbers in the centre of a |
891 | * footer and leave it at that. |
892 | */ |
893 | { |
894 | page_data *page; |
895 | |
896 | for (page = pages; page; page = page->next) { |
897 | int width; |
898 | |
899 | width = conf->pagenum_fontsize * |
900 | string_width(conf->tr, page->number, NULL); |
901 | |
902 | render_string(page, conf->tr, conf->pagenum_fontsize, |
903 | conf->left_margin + (conf->base_width - width)/2, |
904 | conf->bottom_margin - conf->footer_distance, |
905 | page->number); |
906 | } |
907 | } |
908 | |
909 | /* |
f0e51ce1 |
910 | * Start putting together the overall document structure we're |
911 | * going to return. |
912 | */ |
f1530049 |
913 | doc = snew(document); |
43341922 |
914 | doc->fonts = fontlist; |
915 | doc->pages = pages; |
be76d597 |
916 | doc->paper_width = conf->paper_width; |
917 | doc->paper_height = conf->paper_height; |
f0e51ce1 |
918 | |
919 | /* |
920 | * Collect the section heading paragraphs into a document |
921 | * outline. This is slightly fiddly because the Title paragraph |
922 | * isn't required to be at the start, although all the others |
923 | * must be in order. |
924 | */ |
925 | { |
926 | int osize = 20; |
927 | |
f1530049 |
928 | doc->outline_elements = snewn(osize, outline_element); |
f0e51ce1 |
929 | doc->n_outline_elements = 0; |
930 | |
931 | /* First find the title. */ |
be76d597 |
932 | for (pdata = firstpara; pdata; pdata = pdata->next) { |
933 | if (pdata->outline_level == 0) { |
f0e51ce1 |
934 | doc->outline_elements[0].level = 0; |
be76d597 |
935 | doc->outline_elements[0].pdata = pdata; |
f0e51ce1 |
936 | doc->n_outline_elements++; |
937 | break; |
938 | } |
939 | } |
940 | |
941 | /* Then collect the rest. */ |
be76d597 |
942 | for (pdata = firstpara; pdata; pdata = pdata->next) { |
943 | if (pdata->outline_level > 0) { |
f0e51ce1 |
944 | if (doc->n_outline_elements >= osize) { |
945 | osize += 20; |
946 | doc->outline_elements = |
f1530049 |
947 | sresize(doc->outline_elements, osize, outline_element); |
f0e51ce1 |
948 | } |
949 | |
be76d597 |
950 | doc->outline_elements[doc->n_outline_elements].level = |
951 | pdata->outline_level; |
952 | doc->outline_elements[doc->n_outline_elements].pdata = pdata; |
f0e51ce1 |
953 | doc->n_outline_elements++; |
f0e51ce1 |
954 | } |
955 | } |
956 | } |
957 | |
43341922 |
958 | return doc; |
959 | } |
960 | |
2bfd1b76 |
961 | static para_data *make_para_data(int ptype, int paux, int indent, int rmargin, |
be76d597 |
962 | word *pkwtext, word *pkwtext2, word *pwords, |
963 | paper_conf *conf) |
964 | { |
965 | para_data *pdata; |
966 | line_data *ldata; |
967 | int extra_indent, firstline_indent, aux_indent; |
968 | word *aux, *aux2; |
969 | |
f1530049 |
970 | pdata = snew(para_data); |
be76d597 |
971 | pdata->outline_level = -1; |
972 | pdata->outline_title = NULL; |
973 | pdata->rect_type = RECT_NONE; |
2bfd1b76 |
974 | pdata->contents_entry = NULL; |
c6536773 |
975 | pdata->justification = JUST; |
be76d597 |
976 | |
977 | /* |
978 | * Choose fonts for this paragraph. |
979 | * |
980 | * FIXME: All of this ought to be completely |
981 | * user-configurable. |
982 | */ |
983 | switch (ptype) { |
984 | case para_Title: |
985 | pdata->fonts[FONT_NORMAL] = conf->hr; |
986 | pdata->sizes[FONT_NORMAL] = 24; |
987 | pdata->fonts[FONT_EMPH] = conf->hi; |
988 | pdata->sizes[FONT_EMPH] = 24; |
989 | pdata->fonts[FONT_CODE] = conf->cb; |
990 | pdata->sizes[FONT_CODE] = 24; |
991 | pdata->outline_level = 0; |
992 | break; |
993 | |
994 | case para_Chapter: |
995 | case para_Appendix: |
996 | case para_UnnumberedChapter: |
997 | pdata->fonts[FONT_NORMAL] = conf->hr; |
998 | pdata->sizes[FONT_NORMAL] = 20; |
999 | pdata->fonts[FONT_EMPH] = conf->hi; |
1000 | pdata->sizes[FONT_EMPH] = 20; |
1001 | pdata->fonts[FONT_CODE] = conf->cb; |
1002 | pdata->sizes[FONT_CODE] = 20; |
1003 | pdata->outline_level = 1; |
1004 | break; |
1005 | |
1006 | case para_Heading: |
1007 | case para_Subsect: |
1008 | pdata->fonts[FONT_NORMAL] = conf->hr; |
1009 | pdata->fonts[FONT_EMPH] = conf->hi; |
1010 | pdata->fonts[FONT_CODE] = conf->cb; |
1011 | pdata->sizes[FONT_NORMAL] = |
1012 | pdata->sizes[FONT_EMPH] = |
1013 | pdata->sizes[FONT_CODE] = |
1014 | (paux == 0 ? 16 : paux == 1 ? 14 : 13); |
1015 | pdata->outline_level = 2 + paux; |
1016 | break; |
1017 | |
1018 | case para_Normal: |
1019 | case para_BiblioCited: |
1020 | case para_Bullet: |
1021 | case para_NumberedList: |
1022 | case para_DescribedThing: |
1023 | case para_Description: |
1024 | case para_Copyright: |
1025 | pdata->fonts[FONT_NORMAL] = conf->tr; |
1026 | pdata->sizes[FONT_NORMAL] = 12; |
1027 | pdata->fonts[FONT_EMPH] = conf->ti; |
1028 | pdata->sizes[FONT_EMPH] = 12; |
1029 | pdata->fonts[FONT_CODE] = conf->cr; |
1030 | pdata->sizes[FONT_CODE] = 12; |
1031 | break; |
1032 | } |
1033 | |
1034 | /* |
1035 | * Also select an indentation level depending on the |
1036 | * paragraph type (list paragraphs other than |
1037 | * para_DescribedThing need extra indent). |
1038 | * |
1039 | * (FIXME: Perhaps at some point we might even arrange |
1040 | * for the user to be able to request indented first |
1041 | * lines in paragraphs.) |
1042 | */ |
1043 | if (ptype == para_Bullet || |
1044 | ptype == para_NumberedList || |
1045 | ptype == para_Description) { |
1046 | extra_indent = firstline_indent = conf->indent_list; |
1047 | } else { |
1048 | extra_indent = firstline_indent = 0; |
1049 | } |
1050 | |
1051 | /* |
1052 | * Find the auxiliary text for this paragraph. |
1053 | */ |
1054 | aux = aux2 = NULL; |
1055 | aux_indent = 0; |
1056 | |
1057 | switch (ptype) { |
1058 | case para_Chapter: |
1059 | case para_Appendix: |
1060 | case para_Heading: |
1061 | case para_Subsect: |
1062 | /* |
1063 | * For some heading styles (FIXME: be able to |
1064 | * configure which), the auxiliary text contains |
1065 | * the chapter number and is arranged to be |
1066 | * right-aligned a few points left of the primary |
1067 | * margin. For other styles, the auxiliary text is |
1068 | * the full chapter _name_ and takes up space |
1069 | * within the (wrapped) chapter title, meaning that |
1070 | * we must move the first line indent over to make |
1071 | * space for it. |
1072 | */ |
1073 | if (ptype == para_Heading || ptype == para_Subsect) { |
1074 | int len; |
1075 | |
1076 | aux = pkwtext2; |
dd567011 |
1077 | len = paper_width_simple(pdata, pkwtext2, conf); |
be76d597 |
1078 | aux_indent = -len - conf->sect_num_left_space; |
1079 | |
1080 | pdata->outline_title = |
1081 | prepare_outline_title(pkwtext2, L" ", pwords); |
1082 | } else { |
1083 | aux = pkwtext; |
2bfd1b76 |
1084 | aux2 = fake_word(L": "); |
be76d597 |
1085 | aux_indent = 0; |
1086 | |
dd567011 |
1087 | firstline_indent += paper_width_simple(pdata, aux, conf); |
1088 | firstline_indent += paper_width_simple(pdata, aux2, conf); |
be76d597 |
1089 | |
1090 | pdata->outline_title = |
1091 | prepare_outline_title(pkwtext, L": ", pwords); |
1092 | } |
1093 | break; |
1094 | |
1095 | case para_Bullet: |
1096 | /* |
dd567011 |
1097 | * Auxiliary text consisting of a bullet. |
be76d597 |
1098 | */ |
dd567011 |
1099 | aux = fake_word(conf->bullet); |
be76d597 |
1100 | aux_indent = indent + conf->indent_list_bullet; |
1101 | break; |
1102 | |
1103 | case para_NumberedList: |
1104 | /* |
1105 | * Auxiliary text consisting of the number followed |
1106 | * by a (FIXME: configurable) full stop. |
1107 | */ |
1108 | aux = pkwtext; |
2bfd1b76 |
1109 | aux2 = fake_word(L"."); |
be76d597 |
1110 | aux_indent = indent + conf->indent_list_bullet; |
1111 | break; |
1112 | |
1113 | case para_BiblioCited: |
1114 | /* |
1115 | * Auxiliary text consisting of the bibliography |
1116 | * reference text, and a trailing space. |
1117 | */ |
1118 | aux = pkwtext; |
2bfd1b76 |
1119 | aux2 = fake_word(L" "); |
be76d597 |
1120 | aux_indent = indent; |
dd567011 |
1121 | firstline_indent += paper_width_simple(pdata, aux, conf); |
1122 | firstline_indent += paper_width_simple(pdata, aux2, conf); |
be76d597 |
1123 | break; |
1124 | } |
1125 | |
1126 | if (pdata->outline_level >= 0 && !pdata->outline_title) { |
1127 | pdata->outline_title = |
1128 | prepare_outline_title(NULL, NULL, pwords); |
1129 | } |
1130 | |
2bfd1b76 |
1131 | wrap_paragraph(pdata, pwords, conf->base_width - rmargin, |
be76d597 |
1132 | indent + firstline_indent, |
dd567011 |
1133 | indent + extra_indent, conf); |
be76d597 |
1134 | |
1135 | pdata->first->aux_text = aux; |
1136 | pdata->first->aux_text_2 = aux2; |
1137 | pdata->first->aux_left_indent = aux_indent; |
1138 | |
1139 | /* |
1140 | * Line breaking penalties. |
1141 | */ |
1142 | switch (ptype) { |
1143 | case para_Chapter: |
1144 | case para_Appendix: |
1145 | case para_Heading: |
1146 | case para_Subsect: |
1147 | case para_UnnumberedChapter: |
1148 | /* |
1149 | * Fixed and large penalty for breaking straight |
1150 | * after a heading; corresponding bonus for |
1151 | * breaking straight before. |
1152 | */ |
1153 | pdata->first->penalty_before = -500000; |
1154 | pdata->last->penalty_after = 500000; |
1155 | for (ldata = pdata->first; ldata; ldata = ldata->next) |
1156 | ldata->penalty_after = 500000; |
1157 | break; |
1158 | |
1159 | case para_DescribedThing: |
1160 | /* |
1161 | * This is treated a bit like a small heading: |
1162 | * there's a penalty for breaking after it (i.e. |
1163 | * between it and its description), and a bonus for |
1164 | * breaking before it (actually _between_ list |
1165 | * items). |
1166 | */ |
1167 | pdata->first->penalty_before = -200000; |
1168 | pdata->last->penalty_after = 200000; |
1169 | break; |
1170 | |
1171 | default: |
1172 | /* |
1173 | * Most paragraph types: widow/orphan control by |
1174 | * discouraging breaking one line from the end of |
1175 | * any paragraph. |
1176 | */ |
1177 | if (pdata->first != pdata->last) { |
1178 | pdata->first->penalty_after = 100000; |
1179 | pdata->last->penalty_before = 100000; |
1180 | } |
1181 | break; |
1182 | } |
1183 | |
1184 | standard_line_spacing(pdata, conf); |
1185 | |
1186 | /* |
1187 | * Some kinds of section heading require a page break before |
1188 | * them and an underline after. |
1189 | */ |
1190 | if (ptype == para_Title || |
1191 | ptype == para_Chapter || |
1192 | ptype == para_Appendix || |
1193 | ptype == para_UnnumberedChapter) { |
1194 | pdata->first->page_break = TRUE; |
1195 | pdata->first->space_before = conf->chapter_top_space; |
1196 | pdata->last->space_after += |
1197 | (conf->chapter_underline_depth + |
1198 | conf->chapter_underline_thickness); |
1199 | pdata->rect_type = RECT_CHAPTER_UNDERLINE; |
1200 | } |
1201 | |
1202 | return pdata; |
1203 | } |
1204 | |
1205 | static void standard_line_spacing(para_data *pdata, paper_conf *conf) |
1206 | { |
1207 | line_data *ldata; |
1208 | |
1209 | /* |
1210 | * Set the line spacing for each line in this paragraph. |
1211 | */ |
1212 | for (ldata = pdata->first; ldata; ldata = ldata->next) { |
1213 | if (ldata == pdata->first) |
1214 | ldata->space_before = conf->base_para_spacing / 2; |
1215 | else |
1216 | ldata->space_before = conf->base_leading / 2; |
1217 | if (ldata == pdata->last) |
1218 | ldata->space_after = conf->base_para_spacing / 2; |
1219 | else |
1220 | ldata->space_after = conf->base_leading / 2; |
1221 | ldata->page_break = FALSE; |
1222 | } |
1223 | } |
1224 | |
43341922 |
1225 | static font_encoding *new_font_encoding(font_data *font) |
1226 | { |
1227 | font_encoding *fe; |
1228 | int i; |
1229 | |
f1530049 |
1230 | fe = snew(font_encoding); |
43341922 |
1231 | fe->next = NULL; |
1232 | |
1233 | if (font->list->tail) |
1234 | font->list->tail->next = fe; |
1235 | else |
1236 | font->list->head = fe; |
1237 | font->list->tail = fe; |
1238 | |
1239 | fe->font = font; |
1240 | fe->free_pos = 0x21; |
1241 | |
1242 | for (i = 0; i < 256; i++) { |
1243 | fe->vector[i] = NULL; |
1244 | fe->indices[i] = -1; |
1245 | fe->to_unicode[i] = 0xFFFF; |
1246 | } |
1247 | |
1248 | return fe; |
1249 | } |
1250 | |
9db47bc3 |
1251 | static int kern_cmp(void *a, void *b) |
1252 | { |
1253 | kern_pair const *ka = a, *kb = b; |
1254 | |
1255 | if (ka->left < kb->left) |
1256 | return -1; |
1257 | if (ka->left > kb->left) |
1258 | return 1; |
1259 | if (ka->right < kb->right) |
1260 | return -1; |
1261 | if (ka->right > kb->right) |
1262 | return 1; |
1263 | return 0; |
1264 | } |
1265 | |
43341922 |
1266 | static font_data *make_std_font(font_list *fontlist, char const *name) |
1267 | { |
1268 | const int *widths; |
9db47bc3 |
1269 | const kern_pair *kerns; |
43341922 |
1270 | int nglyphs; |
1271 | font_data *f; |
1272 | font_encoding *fe; |
1273 | int i; |
1274 | |
9db47bc3 |
1275 | /* XXXKERN */ |
43341922 |
1276 | widths = ps_std_font_widths(name); |
9db47bc3 |
1277 | kerns = ps_std_font_kerns(name); |
1278 | if (!widths || !kerns) |
43341922 |
1279 | return NULL; |
1280 | |
1281 | for (nglyphs = 0; ps_std_glyphs[nglyphs] != NULL; nglyphs++); |
1282 | |
f1530049 |
1283 | f = snew(font_data); |
43341922 |
1284 | |
1285 | f->list = fontlist; |
1286 | f->name = name; |
1287 | f->nglyphs = nglyphs; |
1288 | f->glyphs = ps_std_glyphs; |
1289 | f->widths = widths; |
9db47bc3 |
1290 | f->kerns = newtree234(kern_cmp); |
1291 | for (;kerns->left != 0xFFFF; kerns++) |
1292 | add234(f->kerns, (void *)kerns); |
f1530049 |
1293 | f->subfont_map = snewn(nglyphs, subfont_map_entry); |
43341922 |
1294 | |
1295 | /* |
1296 | * Our first subfont will contain all of US-ASCII. This isn't |
1297 | * really necessary - we could just create custom subfonts |
1298 | * precisely as the whim of render_string dictated - but |
1299 | * instinct suggests that it might be nice to have the text in |
1300 | * the output files look _marginally_ recognisable. |
1301 | */ |
1302 | fe = new_font_encoding(f); |
1303 | fe->free_pos = 0xA1; /* only the top half is free */ |
1304 | f->latest_subfont = fe; |
1305 | |
1306 | for (i = 0; i < (int)lenof(f->bmp); i++) |
1307 | f->bmp[i] = 0xFFFF; |
1308 | |
1309 | for (i = 0; i < nglyphs; i++) { |
1310 | wchar_t ucs; |
1311 | ucs = ps_glyph_to_unicode(f->glyphs[i]); |
1312 | assert(ucs != 0xFFFF); |
1313 | f->bmp[ucs] = i; |
1314 | if (ucs >= 0x20 && ucs <= 0x7E) { |
1315 | fe->vector[ucs] = f->glyphs[i]; |
1316 | fe->indices[ucs] = i; |
1317 | fe->to_unicode[ucs] = ucs; |
1318 | f->subfont_map[i].subfont = fe; |
1319 | f->subfont_map[i].position = ucs; |
1320 | } else { |
1321 | /* |
1322 | * This character is not yet assigned to a subfont. |
1323 | */ |
1324 | f->subfont_map[i].subfont = NULL; |
1325 | f->subfont_map[i].position = 0; |
1326 | } |
1327 | } |
1328 | |
1329 | return f; |
1330 | } |
1331 | |
9db47bc3 |
1332 | /* NB: arguments are glyph numbers from font->bmp. */ |
1333 | static int find_kern(font_data *font, int lindex, int rindex) |
1334 | { |
1335 | kern_pair wantkp; |
1336 | kern_pair const *kp; |
1337 | |
1338 | if (lindex == 0xFFFF || rindex == 0xFFFF) |
1339 | return 0; |
1340 | wantkp.left = lindex; |
1341 | wantkp.right = rindex; |
1342 | kp = find234(font->kerns, &wantkp, NULL); |
1343 | if (kp == NULL) |
1344 | return 0; |
1345 | return kp->kern; |
1346 | } |
1347 | |
43341922 |
1348 | static int string_width(font_data *font, wchar_t const *string, int *errs) |
1349 | { |
1350 | int width = 0; |
9db47bc3 |
1351 | int index, oindex; |
43341922 |
1352 | |
1353 | if (errs) |
1354 | *errs = 0; |
1355 | |
9db47bc3 |
1356 | oindex = 0xFFFF; |
43341922 |
1357 | for (; *string; string++) { |
5333269a |
1358 | index = (*string < 0 || *string > 0xFFFF ? 0xFFFF : |
1359 | font->bmp[*string]); |
1360 | |
43341922 |
1361 | if (index == 0xFFFF) { |
1362 | if (errs) |
1363 | *errs = 1; |
1364 | } else { |
9db47bc3 |
1365 | width += find_kern(font, oindex, index) + font->widths[index]; |
43341922 |
1366 | } |
9db47bc3 |
1367 | oindex = index; |
43341922 |
1368 | } |
1369 | |
1370 | return width; |
1371 | } |
1372 | |
faad4952 |
1373 | static int paper_width_internal(void *vctx, word *word, int *nspaces); |
43341922 |
1374 | |
1375 | struct paper_width_ctx { |
1376 | int minspacewidth; |
1377 | para_data *pdata; |
dd567011 |
1378 | paper_conf *conf; |
43341922 |
1379 | }; |
1380 | |
faad4952 |
1381 | static int paper_width_list(void *vctx, word *text, word *end, int *nspaces) { |
43341922 |
1382 | int w = 0; |
faad4952 |
1383 | while (text && text != end) { |
1384 | w += paper_width_internal(vctx, text, nspaces); |
43341922 |
1385 | text = text->next; |
1386 | } |
1387 | return w; |
1388 | } |
1389 | |
faad4952 |
1390 | static int paper_width_internal(void *vctx, word *word, int *nspaces) |
43341922 |
1391 | { |
1392 | struct paper_width_ctx *ctx = (struct paper_width_ctx *)vctx; |
1393 | int style, type, findex, width, errs; |
1394 | wchar_t *str; |
1395 | |
1396 | switch (word->type) { |
1397 | case word_HyperLink: |
1398 | case word_HyperEnd: |
1399 | case word_UpperXref: |
1400 | case word_LowerXref: |
3f3d1acc |
1401 | case word_PageXref: |
43341922 |
1402 | case word_XrefEnd: |
1403 | case word_IndexRef: |
1404 | return 0; |
1405 | } |
1406 | |
1407 | style = towordstyle(word->type); |
1408 | type = removeattr(word->type); |
1409 | |
1410 | findex = (style == word_Normal ? FONT_NORMAL : |
1411 | style == word_Emph ? FONT_EMPH : |
1412 | FONT_CODE); |
1413 | |
1414 | if (type == word_Normal) { |
1415 | str = word->text; |
1416 | } else if (type == word_WhiteSpace) { |
faad4952 |
1417 | if (findex != FONT_CODE) { |
1418 | if (nspaces) |
1419 | (*nspaces)++; |
43341922 |
1420 | return ctx->minspacewidth; |
faad4952 |
1421 | } else |
43341922 |
1422 | str = L" "; |
1423 | } else /* if (type == word_Quote) */ { |
1424 | if (word->aux == quote_Open) |
dd567011 |
1425 | str = ctx->conf->lquote; |
43341922 |
1426 | else |
dd567011 |
1427 | str = ctx->conf->rquote; |
43341922 |
1428 | } |
1429 | |
1430 | width = string_width(ctx->pdata->fonts[findex], str, &errs); |
1431 | |
1432 | if (errs && word->alt) |
faad4952 |
1433 | return paper_width_list(vctx, word->alt, NULL, nspaces); |
43341922 |
1434 | else |
1435 | return ctx->pdata->sizes[findex] * width; |
1436 | } |
1437 | |
faad4952 |
1438 | static int paper_width(void *vctx, word *word) |
1439 | { |
1440 | return paper_width_internal(vctx, word, NULL); |
1441 | } |
1442 | |
dd567011 |
1443 | static int paper_width_simple(para_data *pdata, word *text, paper_conf *conf) |
515d216b |
1444 | { |
1445 | struct paper_width_ctx ctx; |
1446 | |
1447 | ctx.pdata = pdata; |
1448 | ctx.minspacewidth = |
1449 | (pdata->sizes[FONT_NORMAL] * |
1450 | string_width(pdata->fonts[FONT_NORMAL], L" ", NULL)); |
dd567011 |
1451 | ctx.conf = conf; |
515d216b |
1452 | |
1453 | return paper_width_list(&ctx, text, NULL, NULL); |
1454 | } |
1455 | |
43341922 |
1456 | static void wrap_paragraph(para_data *pdata, word *words, |
dd567011 |
1457 | int w, int i1, int i2, paper_conf *conf) |
43341922 |
1458 | { |
1459 | wrappedline *wrapping, *p; |
1460 | int spacewidth; |
1461 | struct paper_width_ctx ctx; |
1462 | int line_height; |
1463 | |
1464 | /* |
1465 | * We're going to need to store the line height in every line |
1466 | * structure we generate. |
1467 | */ |
1468 | { |
1469 | int i; |
1470 | line_height = 0; |
1471 | for (i = 0; i < NFONTS; i++) |
1472 | if (line_height < pdata->sizes[i]) |
1473 | line_height = pdata->sizes[i]; |
17c71b41 |
1474 | line_height *= UNITS_PER_PT; |
43341922 |
1475 | } |
1476 | |
1477 | spacewidth = (pdata->sizes[FONT_NORMAL] * |
1478 | string_width(pdata->fonts[FONT_NORMAL], L" ", NULL)); |
1479 | if (spacewidth == 0) { |
1480 | /* |
1481 | * A font without a space?! Disturbing. I hope this never |
1482 | * comes up, but I'll make a random guess anyway and set my |
1483 | * space width to half the point size. |
1484 | */ |
17c71b41 |
1485 | spacewidth = pdata->sizes[FONT_NORMAL] * UNITS_PER_PT / 2; |
43341922 |
1486 | } |
1487 | |
1488 | /* |
1489 | * I'm going to set the _minimum_ space width to 3/5 of the |
1490 | * standard one, and use the standard one as the optimum. |
1491 | */ |
1492 | ctx.minspacewidth = spacewidth * 3 / 5; |
1493 | ctx.pdata = pdata; |
dd567011 |
1494 | ctx.conf = conf; |
43341922 |
1495 | |
1496 | wrapping = wrap_para(words, w - i1, w - i2, paper_width, &ctx, spacewidth); |
1497 | |
1498 | /* |
1499 | * Having done the wrapping, we now concoct a set of line_data |
1500 | * structures. |
1501 | */ |
1502 | pdata->first = pdata->last = NULL; |
1503 | |
1504 | for (p = wrapping; p; p = p->next) { |
1505 | line_data *ldata; |
1506 | word *wd; |
1507 | int len, wid, spaces; |
1508 | |
f1530049 |
1509 | ldata = snew(line_data); |
43341922 |
1510 | |
1511 | ldata->pdata = pdata; |
1512 | ldata->first = p->begin; |
faad4952 |
1513 | ldata->end = p->end; |
43341922 |
1514 | ldata->line_height = line_height; |
1515 | |
1516 | ldata->xpos = (p == wrapping ? i1 : i2); |
1517 | |
1518 | if (pdata->last) { |
1519 | pdata->last->next = ldata; |
1520 | ldata->prev = pdata->last; |
1521 | } else { |
1522 | pdata->first = ldata; |
1523 | ldata->prev = NULL; |
1524 | } |
1525 | ldata->next = NULL; |
1526 | pdata->last = ldata; |
1527 | |
43341922 |
1528 | spaces = 0; |
faad4952 |
1529 | len = paper_width_list(&ctx, ldata->first, ldata->end, &spaces); |
1530 | wid = (p == wrapping ? w - i1 : w - i2); |
43341922 |
1531 | wd = ldata->first; |
43341922 |
1532 | |
faad4952 |
1533 | ldata->hshortfall = wid - len; |
1534 | ldata->nspaces = spaces; |
1535 | /* |
1536 | * This tells us how much the space width needs to |
1537 | * change from _min_spacewidth. But we want to store |
1538 | * its difference from the _natural_ space width, to |
1539 | * make the text rendering easier. |
1540 | */ |
1541 | ldata->hshortfall += ctx.minspacewidth * spaces; |
1542 | ldata->hshortfall -= spacewidth * spaces; |
c6536773 |
1543 | ldata->real_shortfall = ldata->hshortfall; |
faad4952 |
1544 | /* |
1545 | * Special case: on the last line of a paragraph, we |
1546 | * never stretch spaces. |
1547 | */ |
1548 | if (ldata->hshortfall > 0 && !p->next) |
1549 | ldata->hshortfall = 0; |
43341922 |
1550 | |
1551 | ldata->aux_text = NULL; |
515d216b |
1552 | ldata->aux_text_2 = NULL; |
43341922 |
1553 | ldata->aux_left_indent = 0; |
39a0cfb9 |
1554 | ldata->penalty_before = ldata->penalty_after = 0; |
43341922 |
1555 | } |
1556 | |
1557 | } |
1558 | |
1559 | static page_data *page_breaks(line_data *first, line_data *last, |
c6536773 |
1560 | int page_height, int ncols, int headspace) |
43341922 |
1561 | { |
1562 | line_data *l, *m; |
1563 | page_data *ph, *pt; |
c6536773 |
1564 | int n, n1, this_height; |
43341922 |
1565 | |
1566 | /* |
1567 | * Page breaking is done by a close analogue of the optimal |
1568 | * paragraph wrapping algorithm used by wrap_para(). We work |
1569 | * backwards from the end of the document line by line; for |
1570 | * each line, we contemplate every possible number of lines we |
1571 | * could put on a page starting with that line, determine a |
1572 | * cost function for each one, add it to the pre-computed cost |
1573 | * function for optimally page-breaking everything after that |
1574 | * page, and pick the best option. |
1575 | * |
c6536773 |
1576 | * This is made slightly more complex by the fact that we have |
1577 | * a multi-column index with a heading at the top of the |
1578 | * _first_ page, meaning that the first _ncols_ pages must have |
1579 | * a different length. Hence, we must do the wrapping ncols+1 |
1580 | * times over, hypothetically trying to put every subsequence |
1581 | * on every possible page. |
1582 | * |
43341922 |
1583 | * Since my line_data structures are only used for this |
1584 | * purpose, I might as well just store the algorithm data |
1585 | * directly in them. |
1586 | */ |
1587 | |
1588 | for (l = last; l; l = l->prev) { |
f1530049 |
1589 | l->bestcost = snewn(ncols+1, int); |
1590 | l->vshortfall = snewn(ncols+1, int); |
1591 | l->text = snewn(ncols+1, int); |
1592 | l->space = snewn(ncols+1, int); |
1593 | l->page_last = snewn(ncols+1, line_data *); |
c6536773 |
1594 | |
1595 | for (n = 0; n <= ncols; n++) { |
1596 | int minheight, text = 0, space = 0; |
1597 | int cost; |
1598 | |
1599 | n1 = (n < ncols ? n+1 : ncols); |
1600 | if (n < ncols) |
1601 | this_height = page_height - headspace; |
1602 | else |
1603 | this_height = page_height; |
1604 | |
1605 | l->bestcost[n] = -1; |
1606 | for (m = l; m; m = m->next) { |
1607 | if (m != l && m->page_break) |
1608 | break; /* we've gone as far as we can */ |
1609 | |
1610 | if (m != l) { |
1611 | if (m->prev->space_after > 0) |
1612 | space += m->prev->space_after; |
1613 | else |
1614 | text += m->prev->space_after; |
1615 | } |
1616 | if (m != l || m->page_break) { |
1617 | if (m->space_before > 0) |
1618 | space += m->space_before; |
1619 | else |
1620 | text += m->space_before; |
1621 | } |
1622 | text += m->line_height; |
1623 | minheight = text + space; |
43341922 |
1624 | |
c6536773 |
1625 | if (m != l && minheight > this_height) |
1626 | break; |
43341922 |
1627 | |
c6536773 |
1628 | /* |
1629 | * If the space after this paragraph is _negative_ |
1630 | * (which means the next line is folded on to this |
1631 | * one, which happens in the index), we absolutely |
1632 | * cannot break here. |
1633 | */ |
1634 | if (m->space_after >= 0) { |
43341922 |
1635 | |
c6536773 |
1636 | /* |
1637 | * Compute the cost of this arrangement, as the |
1638 | * square of the amount of wasted space on the |
1639 | * page. Exception: if this is the last page |
1640 | * before a mandatory break or the document |
1641 | * end, we don't penalise a large blank area. |
1642 | */ |
1643 | if (m != last && m->next && !m->next->page_break) |
1644 | { |
1ff614b1 |
1645 | int x = (this_height - minheight) / FUNITS_PER_PT * |
1646 | 4096.0; |
c6536773 |
1647 | int xf; |
1648 | |
1649 | xf = x & 0xFF; |
1650 | x >>= 8; |
1651 | |
1652 | cost = x*x; |
1653 | cost += (x * xf) >> 8; |
1654 | } else |
1655 | cost = 0; |
1656 | |
1657 | if (m != last && m->next && !m->next->page_break) { |
1658 | cost += m->penalty_after; |
1659 | cost += m->next->penalty_before; |
1660 | } |
43341922 |
1661 | |
c6536773 |
1662 | if (m != last && m->next && !m->next->page_break) |
1663 | cost += m->next->bestcost[n1]; |
1664 | if (l->bestcost[n] == -1 || l->bestcost[n] > cost) { |
1665 | /* |
1666 | * This is the best option yet for this |
1667 | * starting point. |
1668 | */ |
1669 | l->bestcost[n] = cost; |
1670 | if (m != last && m->next && !m->next->page_break) |
1671 | l->vshortfall[n] = this_height - minheight; |
1672 | else |
1673 | l->vshortfall[n] = 0; |
1674 | l->text[n] = text; |
1675 | l->space[n] = space; |
1676 | l->page_last[n] = m; |
1677 | } |
1678 | } |
43341922 |
1679 | |
c6536773 |
1680 | if (m == last) |
1681 | break; |
43341922 |
1682 | } |
1683 | } |
1684 | } |
1685 | |
1686 | /* |
1687 | * Now go through the line list forwards and assemble the |
1688 | * actual pages. |
1689 | */ |
1690 | ph = pt = NULL; |
1691 | |
1692 | l = first; |
c6536773 |
1693 | n = 0; |
43341922 |
1694 | while (l) { |
1695 | page_data *page; |
c6536773 |
1696 | int text, space, head; |
43341922 |
1697 | |
f1530049 |
1698 | page = snew(page_data); |
43341922 |
1699 | page->next = NULL; |
1700 | page->prev = pt; |
1701 | if (pt) |
1702 | pt->next = page; |
1703 | else |
1704 | ph = page; |
1705 | pt = page; |
1706 | |
1707 | page->first_line = l; |
c6536773 |
1708 | page->last_line = l->page_last[n]; |
43341922 |
1709 | |
1710 | page->first_text = page->last_text = NULL; |
138d7ffb |
1711 | page->first_xref = page->last_xref = NULL; |
23765aeb |
1712 | page->first_rect = page->last_rect = NULL; |
138d7ffb |
1713 | |
43341922 |
1714 | /* |
1715 | * Now assign a y-coordinate to each line on the page. |
1716 | */ |
1717 | text = space = 0; |
c6536773 |
1718 | head = (n < ncols ? headspace : 0); |
43341922 |
1719 | for (l = page->first_line; l; l = l->next) { |
c6536773 |
1720 | if (l != page->first_line) { |
1721 | if (l->prev->space_after > 0) |
1722 | space += l->prev->space_after; |
1723 | else |
1724 | text += l->prev->space_after; |
1725 | } |
1726 | if (l != page->first_line || l->page_break) { |
1727 | if (l->space_before > 0) |
1728 | space += l->space_before; |
1729 | else |
1730 | text += l->space_before; |
1731 | } |
43341922 |
1732 | text += l->line_height; |
1733 | |
1734 | l->page = page; |
416dfe17 |
1735 | l->ypos = text + space + head; |
1736 | if (page->first_line->space[n]) { |
1737 | l->ypos += space * (float)page->first_line->vshortfall[n] / |
1738 | page->first_line->space[n]; |
1739 | } |
43341922 |
1740 | |
1741 | if (l == page->last_line) |
1742 | break; |
1743 | } |
1744 | |
c6536773 |
1745 | l = page->last_line; |
1746 | if (l == last) |
1747 | break; |
1748 | l = l->next; |
1749 | |
1750 | n = (n < ncols ? n+1 : ncols); |
43341922 |
1751 | } |
1752 | |
1753 | return ph; |
1754 | } |
1755 | |
23765aeb |
1756 | static void add_rect_to_page(page_data *page, int x, int y, int w, int h) |
1757 | { |
f1530049 |
1758 | rect *r = snew(rect); |
23765aeb |
1759 | |
1760 | r->next = NULL; |
1761 | if (page->last_rect) |
1762 | page->last_rect->next = r; |
1763 | else |
1764 | page->first_rect = r; |
1765 | page->last_rect = r; |
1766 | |
1767 | r->x = x; |
1768 | r->y = y; |
1769 | r->w = w; |
1770 | r->h = h; |
1771 | } |
1772 | |
43341922 |
1773 | static void add_string_to_page(page_data *page, int x, int y, |
7c8c4239 |
1774 | font_encoding *fe, int size, char *text, |
1775 | int width) |
43341922 |
1776 | { |
1777 | text_fragment *frag; |
1778 | |
f1530049 |
1779 | frag = snew(text_fragment); |
43341922 |
1780 | frag->next = NULL; |
1781 | |
1782 | if (page->last_text) |
1783 | page->last_text->next = frag; |
1784 | else |
1785 | page->first_text = frag; |
1786 | page->last_text = frag; |
1787 | |
1788 | frag->x = x; |
1789 | frag->y = y; |
1790 | frag->fe = fe; |
1791 | frag->fontsize = size; |
1792 | frag->text = dupstr(text); |
7c8c4239 |
1793 | frag->width = width; |
43341922 |
1794 | } |
1795 | |
1796 | /* |
1797 | * Returns the updated x coordinate. |
1798 | */ |
1799 | static int render_string(page_data *page, font_data *font, int fontsize, |
1800 | int x, int y, wchar_t *str) |
1801 | { |
1802 | char *text; |
9db47bc3 |
1803 | int textpos, textwid, kern, glyph, oglyph; |
43341922 |
1804 | font_encoding *subfont = NULL, *sf; |
1805 | |
f1530049 |
1806 | text = snewn(1 + ustrlen(str), char); |
43341922 |
1807 | textpos = textwid = 0; |
1808 | |
9db47bc3 |
1809 | glyph = 0xFFFF; |
43341922 |
1810 | while (*str) { |
9db47bc3 |
1811 | oglyph = glyph; |
5333269a |
1812 | glyph = (*str < 0 || *str > 0xFFFF ? 0xFFFF : |
1813 | font->bmp[*str]); |
43341922 |
1814 | |
4cc00cdd |
1815 | if (glyph == 0xFFFF) { |
1816 | str++; |
43341922 |
1817 | continue; /* nothing more we can do here */ |
4cc00cdd |
1818 | } |
43341922 |
1819 | |
1820 | /* |
1821 | * Find which subfont this character is going in. |
1822 | */ |
1823 | sf = font->subfont_map[glyph].subfont; |
1824 | |
1825 | if (!sf) { |
1826 | int c; |
1827 | |
1828 | /* |
1829 | * This character is not yet in a subfont. Assign one. |
1830 | */ |
1831 | if (font->latest_subfont->free_pos >= 0x100) |
1832 | font->latest_subfont = new_font_encoding(font); |
1833 | |
1834 | c = font->latest_subfont->free_pos++; |
1835 | if (font->latest_subfont->free_pos == 0x7F) |
1836 | font->latest_subfont->free_pos = 0xA1; |
1837 | |
1838 | font->subfont_map[glyph].subfont = font->latest_subfont; |
1839 | font->subfont_map[glyph].position = c; |
1840 | font->latest_subfont->vector[c] = font->glyphs[glyph]; |
1841 | font->latest_subfont->indices[c] = glyph; |
1842 | font->latest_subfont->to_unicode[c] = *str; |
1843 | |
1844 | sf = font->latest_subfont; |
1845 | } |
1846 | |
9db47bc3 |
1847 | kern = find_kern(font, oglyph, glyph) * fontsize; |
1848 | |
1849 | if (!subfont || sf != subfont || kern) { |
43341922 |
1850 | if (subfont) { |
1851 | text[textpos] = '\0'; |
7c8c4239 |
1852 | add_string_to_page(page, x, y, subfont, fontsize, text, |
1853 | textwid); |
9db47bc3 |
1854 | x += textwid + kern; |
43341922 |
1855 | } else { |
1856 | assert(textpos == 0); |
1857 | } |
1858 | textpos = 0; |
9db47bc3 |
1859 | textwid = 0; |
43341922 |
1860 | subfont = sf; |
1861 | } |
1862 | |
1863 | text[textpos++] = font->subfont_map[glyph].position; |
1864 | textwid += font->widths[glyph] * fontsize; |
1865 | |
1866 | str++; |
1867 | } |
1868 | |
1869 | if (textpos > 0) { |
1870 | text[textpos] = '\0'; |
7c8c4239 |
1871 | add_string_to_page(page, x, y, subfont, fontsize, text, textwid); |
43341922 |
1872 | x += textwid; |
1873 | } |
1874 | |
1875 | return x; |
1876 | } |
1877 | |
1878 | /* |
1879 | * Returns the updated x coordinate. |
1880 | */ |
138d7ffb |
1881 | static int render_text(page_data *page, para_data *pdata, line_data *ldata, |
1882 | int x, int y, word *text, word *text_end, xref **xr, |
1883 | int shortfall, int nspaces, int *nspace, |
dd567011 |
1884 | keywordlist *keywords, indexdata *idx, paper_conf *conf) |
43341922 |
1885 | { |
faad4952 |
1886 | while (text && text != text_end) { |
43341922 |
1887 | int style, type, findex, errs; |
1888 | wchar_t *str; |
138d7ffb |
1889 | xref_dest dest; |
43341922 |
1890 | |
1891 | switch (text->type) { |
138d7ffb |
1892 | /* |
1893 | * Start a cross-reference. |
1894 | */ |
43341922 |
1895 | case word_HyperLink: |
43341922 |
1896 | case word_UpperXref: |
1897 | case word_LowerXref: |
3f3d1acc |
1898 | case word_PageXref: |
138d7ffb |
1899 | |
1900 | if (text->type == word_HyperLink) { |
1901 | dest.type = URL; |
e4ea58f8 |
1902 | dest.url = utoa_dup(text->text, CS_ASCII); |
138d7ffb |
1903 | dest.page = NULL; |
3f3d1acc |
1904 | } else if (text->type == word_PageXref) { |
1905 | dest.type = PAGE; |
1906 | dest.url = NULL; |
1907 | dest.page = (page_data *)text->private_data; |
138d7ffb |
1908 | } else { |
1909 | keyword *kwl = kw_lookup(keywords, text->text); |
1910 | para_data *pdata; |
1911 | |
1912 | if (kwl) { |
1913 | assert(kwl->para->private_data); |
1914 | pdata = (para_data *) kwl->para->private_data; |
1915 | dest.type = PAGE; |
1916 | dest.page = pdata->first->page; |
1917 | dest.url = NULL; |
1918 | } else { |
1919 | /* |
1920 | * Shouldn't happen, but *shrug* |
1921 | */ |
1922 | dest.type = NONE; |
1923 | dest.page = NULL; |
1924 | dest.url = NULL; |
1925 | } |
1926 | } |
1927 | if (dest.type != NONE) { |
f1530049 |
1928 | *xr = snew(xref); |
138d7ffb |
1929 | (*xr)->dest = dest; /* structure copy */ |
1930 | if (page->last_xref) |
1931 | page->last_xref->next = *xr; |
1932 | else |
1933 | page->first_xref = *xr; |
1934 | page->last_xref = *xr; |
23765aeb |
1935 | (*xr)->next = NULL; |
138d7ffb |
1936 | |
1937 | /* |
1938 | * FIXME: Ideally we should have, and use, some |
1939 | * vertical font metric information here so that |
1940 | * our cross-ref rectangle can take account of |
1941 | * descenders and the font's cap height. This will |
1942 | * do for the moment, but it isn't ideal. |
1943 | */ |
1944 | (*xr)->lx = (*xr)->rx = x; |
1945 | (*xr)->by = y; |
1946 | (*xr)->ty = y + ldata->line_height; |
1947 | } |
1948 | goto nextword; |
1949 | |
1950 | /* |
1951 | * Finish extending a cross-reference box. |
1952 | */ |
1953 | case word_HyperEnd: |
43341922 |
1954 | case word_XrefEnd: |
138d7ffb |
1955 | *xr = NULL; |
1956 | goto nextword; |
1957 | |
43341922 |
1958 | /* |
c6536773 |
1959 | * Add the current page number to the list of pages |
1960 | * referenced by an index entry. |
43341922 |
1961 | */ |
c6536773 |
1962 | case word_IndexRef: |
34d8cc1c |
1963 | /* |
1964 | * We don't create index references in contents entries. |
1965 | */ |
1966 | if (!pdata->contents_entry) { |
c6536773 |
1967 | indextag *tag; |
1968 | int i; |
1969 | |
1970 | tag = index_findtag(idx, text->text); |
1971 | if (!tag) |
1972 | goto nextword; |
1973 | |
1974 | for (i = 0; i < tag->nrefs; i++) { |
1975 | indexentry *entry = tag->refs[i]; |
1976 | paper_idx *pi = (paper_idx *)entry->backend_data; |
1977 | |
1978 | /* |
1979 | * If the same index term is indexed twice |
1980 | * within the same section, we only want to |
1981 | * mention it once in the index. |
1982 | */ |
1983 | if (pi->lastpage != page) { |
3f3d1acc |
1984 | word **wp; |
1985 | |
c6536773 |
1986 | if (pi->lastword) { |
1987 | pi->lastword = pi->lastword->next = |
1988 | fake_word(L","); |
1989 | pi->lastword = pi->lastword->next = |
1990 | fake_space_word(); |
3f3d1acc |
1991 | wp = &pi->lastword->next; |
1992 | } else |
1993 | wp = &pi->words; |
1994 | |
1995 | pi->lastword = *wp = |
1996 | fake_page_ref(page); |
1997 | pi->lastword = pi->lastword->next = |
1998 | fake_word(page->number); |
1999 | pi->lastword = pi->lastword->next = |
2000 | fake_end_ref(); |
c6536773 |
2001 | } |
2002 | |
2003 | pi->lastpage = page; |
2004 | } |
2005 | } |
2006 | goto nextword; |
43341922 |
2007 | } |
2008 | |
2009 | style = towordstyle(text->type); |
2010 | type = removeattr(text->type); |
2011 | |
2012 | findex = (style == word_Normal ? FONT_NORMAL : |
2013 | style == word_Emph ? FONT_EMPH : |
2014 | FONT_CODE); |
2015 | |
2016 | if (type == word_Normal) { |
2017 | str = text->text; |
2018 | } else if (type == word_WhiteSpace) { |
2019 | x += pdata->sizes[findex] * |
2020 | string_width(pdata->fonts[findex], L" ", NULL); |
faad4952 |
2021 | if (nspaces && findex != FONT_CODE) { |
2022 | x += (*nspace+1) * shortfall / nspaces; |
2023 | x -= *nspace * shortfall / nspaces; |
2024 | (*nspace)++; |
2025 | } |
43341922 |
2026 | goto nextword; |
2027 | } else /* if (type == word_Quote) */ { |
2028 | if (text->aux == quote_Open) |
dd567011 |
2029 | str = conf->lquote; |
43341922 |
2030 | else |
dd567011 |
2031 | str = conf->rquote; |
43341922 |
2032 | } |
2033 | |
2034 | (void) string_width(pdata->fonts[findex], str, &errs); |
2035 | |
2036 | if (errs && text->alt) |
138d7ffb |
2037 | x = render_text(page, pdata, ldata, x, y, text->alt, NULL, |
dd567011 |
2038 | xr, shortfall, nspaces, nspace, keywords, idx, |
2039 | conf); |
43341922 |
2040 | else |
2041 | x = render_string(page, pdata->fonts[findex], |
2042 | pdata->sizes[findex], x, y, str); |
2043 | |
138d7ffb |
2044 | if (*xr) |
2045 | (*xr)->rx = x; |
2046 | |
43341922 |
2047 | nextword: |
43341922 |
2048 | text = text->next; |
2049 | } |
2050 | |
2051 | return x; |
2052 | } |
2053 | |
2bfd1b76 |
2054 | /* |
2055 | * Returns the last x position used on the line. |
2056 | */ |
2057 | static int render_line(line_data *ldata, int left_x, int top_y, |
dd567011 |
2058 | xref_dest *dest, keywordlist *keywords, indexdata *idx, |
2059 | paper_conf *conf) |
43341922 |
2060 | { |
faad4952 |
2061 | int nspace; |
138d7ffb |
2062 | xref *xr; |
2bfd1b76 |
2063 | int ret = 0; |
138d7ffb |
2064 | |
faad4952 |
2065 | if (ldata->aux_text) { |
515d216b |
2066 | int x; |
138d7ffb |
2067 | xr = NULL; |
faad4952 |
2068 | nspace = 0; |
515d216b |
2069 | x = render_text(ldata->page, ldata->pdata, ldata, |
2070 | left_x + ldata->aux_left_indent, |
2071 | top_y - ldata->ypos, |
c6536773 |
2072 | ldata->aux_text, NULL, &xr, 0, 0, &nspace, |
dd567011 |
2073 | keywords, idx, conf); |
515d216b |
2074 | if (ldata->aux_text_2) |
2075 | render_text(ldata->page, ldata->pdata, ldata, |
2076 | x, top_y - ldata->ypos, |
c6536773 |
2077 | ldata->aux_text_2, NULL, &xr, 0, 0, &nspace, |
dd567011 |
2078 | keywords, idx, conf); |
faad4952 |
2079 | } |
2080 | nspace = 0; |
138d7ffb |
2081 | |
87bd6353 |
2082 | if (ldata->first) { |
138d7ffb |
2083 | /* |
87bd6353 |
2084 | * There might be a cross-reference carried over from a |
2085 | * previous line. |
138d7ffb |
2086 | */ |
87bd6353 |
2087 | if (dest->type != NONE) { |
f1530049 |
2088 | xr = snew(xref); |
87bd6353 |
2089 | xr->next = NULL; |
2090 | xr->dest = *dest; /* structure copy */ |
2091 | if (ldata->page->last_xref) |
2092 | ldata->page->last_xref->next = xr; |
2093 | else |
2094 | ldata->page->first_xref = xr; |
2095 | ldata->page->last_xref = xr; |
2096 | xr->lx = xr->rx = left_x + ldata->xpos; |
2097 | xr->by = top_y - ldata->ypos; |
2098 | xr->ty = top_y - ldata->ypos + ldata->line_height; |
2099 | } else |
2100 | xr = NULL; |
2101 | |
c6536773 |
2102 | { |
2103 | int extra_indent, shortfall, spaces; |
2104 | int just = ldata->pdata->justification; |
2105 | |
2106 | /* |
2107 | * All forms of justification become JUST when we have |
2108 | * to squeeze the paragraph. |
2109 | */ |
2110 | if (ldata->hshortfall < 0) |
2111 | just = JUST; |
2112 | |
2113 | switch (just) { |
2114 | case JUST: |
2115 | shortfall = ldata->hshortfall; |
2116 | spaces = ldata->nspaces; |
2117 | extra_indent = 0; |
2118 | break; |
2119 | case LEFT: |
2120 | shortfall = spaces = extra_indent = 0; |
2121 | break; |
2122 | case RIGHT: |
2123 | shortfall = spaces = 0; |
2124 | extra_indent = ldata->real_shortfall; |
2125 | break; |
2126 | } |
2127 | |
2128 | ret = render_text(ldata->page, ldata->pdata, ldata, |
2129 | left_x + ldata->xpos + extra_indent, |
2130 | top_y - ldata->ypos, ldata->first, ldata->end, |
2131 | &xr, shortfall, spaces, &nspace, |
dd567011 |
2132 | keywords, idx, conf); |
c6536773 |
2133 | } |
87bd6353 |
2134 | |
2135 | if (xr) { |
2136 | /* |
2137 | * There's a cross-reference continued on to the next line. |
2138 | */ |
2139 | *dest = xr->dest; |
2140 | } else |
2141 | dest->type = NONE; |
2142 | } |
2bfd1b76 |
2143 | |
2144 | return ret; |
43341922 |
2145 | } |
515d216b |
2146 | |
c6536773 |
2147 | static void render_para(para_data *pdata, paper_conf *conf, |
2148 | keywordlist *keywords, indexdata *idx, |
2149 | paragraph *index_placeholder, page_data *index_page) |
2150 | { |
2151 | int last_x; |
2152 | xref *cxref; |
2153 | page_data *cxref_page; |
2154 | xref_dest dest; |
2155 | para_data *target; |
2156 | line_data *ldata; |
2157 | |
2158 | dest.type = NONE; |
2159 | cxref = NULL; |
2160 | cxref_page = NULL; |
2161 | |
2162 | for (ldata = pdata->first; ldata; ldata = ldata->next) { |
2163 | /* |
2164 | * If this is a contents entry, we expect to have a single |
2165 | * enormous cross-reference rectangle covering the whole |
2166 | * thing. (Unless, of course, it spans multiple pages.) |
2167 | */ |
2168 | if (pdata->contents_entry && ldata->page != cxref_page) { |
2169 | cxref_page = ldata->page; |
f1530049 |
2170 | cxref = snew(xref); |
c6536773 |
2171 | cxref->next = NULL; |
2172 | cxref->dest.type = PAGE; |
2173 | if (pdata->contents_entry == index_placeholder) { |
2174 | cxref->dest.page = index_page; |
2175 | } else { |
2176 | assert(pdata->contents_entry->private_data); |
2177 | target = (para_data *)pdata->contents_entry->private_data; |
2178 | cxref->dest.page = target->first->page; |
2179 | } |
2180 | cxref->dest.url = NULL; |
2181 | if (ldata->page->last_xref) |
2182 | ldata->page->last_xref->next = cxref; |
2183 | else |
2184 | ldata->page->first_xref = cxref; |
2185 | ldata->page->last_xref = cxref; |
2186 | cxref->lx = conf->left_margin; |
2187 | cxref->rx = conf->paper_width - conf->right_margin; |
2188 | cxref->ty = conf->paper_height - conf->top_margin |
2189 | - ldata->ypos + ldata->line_height; |
2190 | } |
2191 | if (pdata->contents_entry) { |
2192 | assert(cxref != NULL); |
2193 | cxref->by = conf->paper_height - conf->top_margin |
2194 | - ldata->ypos; |
2195 | } |
2196 | |
2197 | last_x = render_line(ldata, conf->left_margin, |
2198 | conf->paper_height - conf->top_margin, |
dd567011 |
2199 | &dest, keywords, idx, conf); |
c6536773 |
2200 | if (ldata == pdata->last) |
2201 | break; |
2202 | } |
2203 | |
2204 | /* |
2205 | * If this is a contents entry, add leaders and a page |
2206 | * number. |
2207 | */ |
2208 | if (pdata->contents_entry) { |
2209 | word *w; |
2210 | wchar_t *num; |
2211 | int wid; |
2212 | int x; |
2213 | |
2214 | if (pdata->contents_entry == index_placeholder) { |
2215 | num = index_page->number; |
2216 | } else { |
2217 | assert(pdata->contents_entry->private_data); |
2218 | target = (para_data *)pdata->contents_entry->private_data; |
2219 | num = target->first->page->number; |
2220 | } |
2221 | |
2222 | w = fake_word(num); |
dd567011 |
2223 | wid = paper_width_simple(pdata, w, conf); |
c6536773 |
2224 | sfree(w); |
2225 | |
c6536773 |
2226 | for (x = 0; x < conf->base_width; x += conf->leader_separation) |
2227 | if (x - conf->leader_separation > last_x - conf->left_margin && |
2228 | x + conf->leader_separation < conf->base_width - wid) |
2229 | render_string(pdata->last->page, |
2230 | pdata->fonts[FONT_NORMAL], |
2231 | pdata->sizes[FONT_NORMAL], |
2232 | conf->left_margin + x, |
2233 | (conf->paper_height - conf->top_margin - |
2234 | pdata->last->ypos), L"."); |
adbcaa16 |
2235 | |
2236 | render_string(pdata->last->page, |
2237 | pdata->fonts[FONT_NORMAL], |
2238 | pdata->sizes[FONT_NORMAL], |
2239 | conf->paper_width - conf->right_margin - wid, |
2240 | (conf->paper_height - conf->top_margin - |
2241 | pdata->last->ypos), num); |
c6536773 |
2242 | } |
2243 | |
2244 | /* |
2245 | * Render any rectangle (chapter title underline or rule) |
2246 | * that goes with this paragraph. |
2247 | */ |
2248 | switch (pdata->rect_type) { |
2249 | case RECT_CHAPTER_UNDERLINE: |
2250 | add_rect_to_page(pdata->last->page, |
2251 | conf->left_margin, |
2252 | (conf->paper_height - conf->top_margin - |
2253 | pdata->last->ypos - |
2254 | conf->chapter_underline_depth), |
2255 | conf->base_width, |
2256 | conf->chapter_underline_thickness); |
2257 | break; |
2258 | case RECT_RULE: |
2259 | add_rect_to_page(pdata->first->page, |
2260 | conf->left_margin + pdata->first->xpos, |
2261 | (conf->paper_height - conf->top_margin - |
2262 | pdata->last->ypos - |
2263 | pdata->last->line_height), |
2264 | conf->base_width - pdata->first->xpos, |
2265 | pdata->last->line_height); |
2266 | break; |
2267 | default: /* placate gcc */ |
2268 | break; |
2269 | } |
2270 | } |
2271 | |
be76d597 |
2272 | static para_data *code_paragraph(int indent, word *words, paper_conf *conf) |
515d216b |
2273 | { |
f1530049 |
2274 | para_data *pdata = snew(para_data); |
be76d597 |
2275 | |
515d216b |
2276 | /* |
2277 | * For code paragraphs, I'm going to hack grievously and |
2278 | * pretend the three normal fonts are the three code paragraph |
2279 | * fonts. |
2280 | */ |
be76d597 |
2281 | pdata->fonts[FONT_NORMAL] = conf->cb; |
2282 | pdata->fonts[FONT_EMPH] = conf->co; |
36e64ed4 |
2283 | pdata->fonts[FONT_CODE] = conf->cr; |
515d216b |
2284 | pdata->sizes[FONT_NORMAL] = |
2285 | pdata->sizes[FONT_EMPH] = |
be76d597 |
2286 | pdata->sizes[FONT_CODE] = 12; |
515d216b |
2287 | |
2288 | pdata->first = pdata->last = NULL; |
be76d597 |
2289 | pdata->outline_level = -1; |
2290 | pdata->rect_type = RECT_NONE; |
2bfd1b76 |
2291 | pdata->contents_entry = NULL; |
c6536773 |
2292 | pdata->justification = LEFT; |
515d216b |
2293 | |
2294 | for (; words; words = words->next) { |
2295 | wchar_t *t, *e, *start; |
2296 | word *lhead = NULL, *ltail = NULL, *w; |
2297 | line_data *ldata; |
2298 | int prev = -1, curr; |
2299 | |
2300 | t = words->text; |
2301 | if (words->next && words->next->type == word_Emph) { |
2302 | e = words->next->text; |
2303 | words = words->next; |
2304 | } else |
2305 | e = NULL; |
2306 | |
2307 | start = t; |
2308 | |
2309 | while (*start) { |
2310 | while (*t) { |
2311 | if (!e || !*e) |
2312 | curr = 0; |
2313 | else if (*e == L'i') |
2314 | curr = 1; |
2315 | else if (*e == L'b') |
2316 | curr = 2; |
2317 | else |
2318 | curr = 0; |
2319 | |
2320 | if (prev < 0) |
2321 | prev = curr; |
2322 | |
2323 | if (curr != prev) |
2324 | break; |
2325 | |
2326 | t++; |
2327 | if (e && *e) |
2328 | e++; |
2329 | } |
2330 | |
2331 | /* |
2332 | * We've isolated a maximal subsequence of the line |
2333 | * which has the same emphasis. Form it into a word |
2334 | * structure. |
2335 | */ |
f1530049 |
2336 | w = snew(word); |
515d216b |
2337 | w->next = NULL; |
2338 | w->alt = NULL; |
2339 | w->type = (prev == 0 ? word_WeakCode : |
2340 | prev == 1 ? word_Emph : word_Normal); |
f1530049 |
2341 | w->text = snewn(t-start+1, wchar_t); |
515d216b |
2342 | memcpy(w->text, start, (t-start) * sizeof(wchar_t)); |
2343 | w->text[t-start] = '\0'; |
2344 | w->breaks = FALSE; |
2345 | |
2346 | if (ltail) |
2347 | ltail->next = w; |
2348 | else |
2349 | lhead = w; |
2350 | ltail = w; |
2351 | |
2352 | start = t; |
2353 | prev = -1; |
2354 | } |
2355 | |
f1530049 |
2356 | ldata = snew(line_data); |
515d216b |
2357 | |
2358 | ldata->pdata = pdata; |
2359 | ldata->first = lhead; |
2360 | ldata->end = NULL; |
17c71b41 |
2361 | ldata->line_height = conf->base_font_size * UNITS_PER_PT; |
515d216b |
2362 | |
2363 | ldata->xpos = indent; |
2364 | |
2365 | if (pdata->last) { |
2366 | pdata->last->next = ldata; |
2367 | ldata->prev = pdata->last; |
2368 | } else { |
2369 | pdata->first = ldata; |
2370 | ldata->prev = NULL; |
2371 | } |
2372 | ldata->next = NULL; |
2373 | pdata->last = ldata; |
2374 | |
2375 | ldata->hshortfall = 0; |
2376 | ldata->nspaces = 0; |
2377 | ldata->aux_text = NULL; |
2378 | ldata->aux_text_2 = NULL; |
2379 | ldata->aux_left_indent = 0; |
39a0cfb9 |
2380 | /* General opprobrium for breaking in a code paragraph. */ |
2381 | ldata->penalty_before = ldata->penalty_after = 50000; |
515d216b |
2382 | } |
be76d597 |
2383 | |
2384 | standard_line_spacing(pdata, conf); |
2385 | |
2386 | return pdata; |
515d216b |
2387 | } |
87bd6353 |
2388 | |
be76d597 |
2389 | static para_data *rule_paragraph(int indent, paper_conf *conf) |
87bd6353 |
2390 | { |
f1530049 |
2391 | para_data *pdata = snew(para_data); |
87bd6353 |
2392 | line_data *ldata; |
2393 | |
f1530049 |
2394 | ldata = snew(line_data); |
87bd6353 |
2395 | |
2396 | ldata->pdata = pdata; |
2397 | ldata->first = NULL; |
2398 | ldata->end = NULL; |
be76d597 |
2399 | ldata->line_height = conf->rule_thickness; |
87bd6353 |
2400 | |
2401 | ldata->xpos = indent; |
2402 | |
2403 | ldata->prev = NULL; |
2404 | ldata->next = NULL; |
2405 | |
2406 | ldata->hshortfall = 0; |
2407 | ldata->nspaces = 0; |
2408 | ldata->aux_text = NULL; |
2409 | ldata->aux_text_2 = NULL; |
2410 | ldata->aux_left_indent = 0; |
2411 | |
2412 | /* |
2413 | * Better to break after a rule than before it |
2414 | */ |
2415 | ldata->penalty_after += 100000; |
2416 | ldata->penalty_before += -100000; |
2417 | |
2418 | pdata->first = pdata->last = ldata; |
be76d597 |
2419 | pdata->outline_level = -1; |
2420 | pdata->rect_type = RECT_RULE; |
2bfd1b76 |
2421 | pdata->contents_entry = NULL; |
c6536773 |
2422 | pdata->justification = LEFT; |
be76d597 |
2423 | |
2424 | standard_line_spacing(pdata, conf); |
2425 | |
2426 | return pdata; |
2427 | } |
2428 | |
2429 | /* |
2430 | * Plain-text-like formatting for outline titles. |
2431 | */ |
2432 | static void paper_rdaddw(rdstring *rs, word *text) { |
2433 | for (; text; text = text->next) switch (text->type) { |
2434 | case word_HyperLink: |
2435 | case word_HyperEnd: |
2436 | case word_UpperXref: |
2437 | case word_LowerXref: |
2438 | case word_XrefEnd: |
2439 | case word_IndexRef: |
2440 | break; |
2441 | |
2442 | case word_Normal: |
2443 | case word_Emph: |
2444 | case word_Code: |
2445 | case word_WeakCode: |
2446 | case word_WhiteSpace: |
2447 | case word_EmphSpace: |
2448 | case word_CodeSpace: |
2449 | case word_WkCodeSpace: |
2450 | case word_Quote: |
2451 | case word_EmphQuote: |
2452 | case word_CodeQuote: |
2453 | case word_WkCodeQuote: |
2454 | assert(text->type != word_CodeQuote && |
2455 | text->type != word_WkCodeQuote); |
2456 | if (towordstyle(text->type) == word_Emph && |
2457 | (attraux(text->aux) == attr_First || |
2458 | attraux(text->aux) == attr_Only)) |
2459 | rdadd(rs, L'_'); /* FIXME: configurability */ |
2460 | else if (towordstyle(text->type) == word_Code && |
2461 | (attraux(text->aux) == attr_First || |
2462 | attraux(text->aux) == attr_Only)) |
2463 | rdadd(rs, L'\''); /* FIXME: configurability */ |
2464 | if (removeattr(text->type) == word_Normal) { |
2465 | rdadds(rs, text->text); |
2466 | } else if (removeattr(text->type) == word_WhiteSpace) { |
2467 | rdadd(rs, L' '); |
2468 | } else if (removeattr(text->type) == word_Quote) { |
2469 | rdadd(rs, L'\''); /* fixme: configurability */ |
2470 | } |
2471 | if (towordstyle(text->type) == word_Emph && |
2472 | (attraux(text->aux) == attr_Last || |
2473 | attraux(text->aux) == attr_Only)) |
2474 | rdadd(rs, L'_'); /* FIXME: configurability */ |
2475 | else if (towordstyle(text->type) == word_Code && |
2476 | (attraux(text->aux) == attr_Last || |
2477 | attraux(text->aux) == attr_Only)) |
2478 | rdadd(rs, L'\''); /* FIXME: configurability */ |
2479 | break; |
2480 | } |
2481 | } |
2482 | |
2483 | static wchar_t *prepare_outline_title(word *first, wchar_t *separator, |
2484 | word *second) |
2485 | { |
2486 | rdstring rs = {0, 0, NULL}; |
2487 | |
2488 | if (first) |
2489 | paper_rdaddw(&rs, first); |
2490 | if (separator) |
2491 | rdadds(&rs, separator); |
2492 | if (second) |
2493 | paper_rdaddw(&rs, second); |
2494 | |
2495 | return rs.text; |
87bd6353 |
2496 | } |
2bfd1b76 |
2497 | |
2498 | static word *fake_word(wchar_t *text) |
2499 | { |
f1530049 |
2500 | word *ret = snew(word); |
2bfd1b76 |
2501 | ret->next = NULL; |
2502 | ret->alt = NULL; |
2503 | ret->type = word_Normal; |
2504 | ret->text = ustrdup(text); |
2505 | ret->breaks = FALSE; |
2506 | ret->aux = 0; |
2507 | return ret; |
2508 | } |
2509 | |
c6536773 |
2510 | static word *fake_space_word(void) |
2511 | { |
f1530049 |
2512 | word *ret = snew(word); |
c6536773 |
2513 | ret->next = NULL; |
2514 | ret->alt = NULL; |
2515 | ret->type = word_WhiteSpace; |
2516 | ret->text = NULL; |
2517 | ret->breaks = TRUE; |
2518 | ret->aux = 0; |
2519 | return ret; |
2520 | } |
2521 | |
3f3d1acc |
2522 | static word *fake_page_ref(page_data *page) |
2523 | { |
f1530049 |
2524 | word *ret = snew(word); |
3f3d1acc |
2525 | ret->next = NULL; |
2526 | ret->alt = NULL; |
2527 | ret->type = word_PageXref; |
2528 | ret->text = NULL; |
2529 | ret->breaks = FALSE; |
2530 | ret->aux = 0; |
2531 | ret->private_data = page; |
2532 | return ret; |
2533 | } |
2534 | |
2535 | static word *fake_end_ref(void) |
2536 | { |
f1530049 |
2537 | word *ret = snew(word); |
3f3d1acc |
2538 | ret->next = NULL; |
2539 | ret->alt = NULL; |
2540 | ret->type = word_XrefEnd; |
2541 | ret->text = NULL; |
2542 | ret->breaks = FALSE; |
2543 | ret->aux = 0; |
2544 | return ret; |
2545 | } |
2546 | |
2bfd1b76 |
2547 | static word *prepare_contents_title(word *first, wchar_t *separator, |
2548 | word *second) |
2549 | { |
2550 | word *ret; |
2551 | word **wptr, *w; |
2552 | |
2553 | wptr = &ret; |
2554 | |
2555 | if (first) { |
2556 | w = dup_word_list(first); |
2557 | *wptr = w; |
2558 | while (w->next) |
2559 | w = w->next; |
2560 | wptr = &w->next; |
2561 | } |
2562 | |
2563 | if (separator) { |
2564 | w = fake_word(separator); |
2565 | *wptr = w; |
2566 | wptr = &w->next; |
2567 | } |
2568 | |
2569 | if (second) { |
2570 | *wptr = dup_word_list(second); |
2571 | } |
2572 | |
2573 | return ret; |
2574 | } |
c6536773 |
2575 | |
2576 | static void fold_into_page(page_data *dest, page_data *src, int right_shift) |
2577 | { |
2578 | line_data *ldata; |
2579 | |
2580 | if (!src->first_line) |
2581 | return; |
2582 | |
2583 | if (dest->last_line) { |
2584 | dest->last_line->next = src->first_line; |
2585 | src->first_line->prev = dest->last_line; |
2586 | } |
2587 | dest->last_line = src->last_line; |
2588 | |
2589 | for (ldata = src->first_line; ldata; ldata = ldata->next) { |
2590 | ldata->page = dest; |
2591 | ldata->xpos += right_shift; |
2592 | |
2593 | if (ldata == src->last_line) |
2594 | break; |
2595 | } |
2596 | } |