1 /*
2 * FontFactory.cpp
3 * testICU
4 *
5 * Authors:
6 * fred
7 * bulia byak <buliabyak@users.sf.net>
8 *
9 */
11 #include "FontFactory.h"
12 #include <libnrtype/font-instance.h>
14 #include <glibmm.h>
17 #ifdef HAVE_CONFIG_H
18 # include "config.h"
19 #endif
21 #include <glib/gmem.h>
22 #include <glibmm/i18n.h> // _()
24 /* Freetype2 */
25 # include <pango/pangoft2.h>
28 // need to avoid using the size field
29 size_t font_descr_hash::operator()( PangoFontDescription *const &x) const {
30 int h = 0;
31 h *= 1128467;
32 char const *theF = pango_font_description_get_family(x);
33 h += (theF)?g_str_hash(theF):0;
34 h *= 1128467;
35 h += (int)pango_font_description_get_style(x);
36 h *= 1128467;
37 h += (int)pango_font_description_get_variant(x);
38 h *= 1128467;
39 h += (int)pango_font_description_get_weight(x);
40 h *= 1128467;
41 h += (int)pango_font_description_get_stretch(x);
42 return h;
43 }
44 bool font_descr_equal::operator()( PangoFontDescription *const&a, PangoFontDescription *const &b) {
45 //if ( pango_font_description_equal(a,b) ) return true;
46 char const *fa = pango_font_description_get_family(a);
47 char const *fb = pango_font_description_get_family(b);
48 if ( ( fa && fb == NULL ) || ( fb && fa == NULL ) ) return false;
49 if ( fa && fb && strcmp(fa,fb) != 0 ) return false;
50 if ( pango_font_description_get_style(a) != pango_font_description_get_style(b) ) return false;
51 if ( pango_font_description_get_variant(a) != pango_font_description_get_variant(b) ) return false;
52 if ( pango_font_description_get_weight(a) != pango_font_description_get_weight(b) ) return false;
53 if ( pango_font_description_get_stretch(a) != pango_font_description_get_stretch(b) ) return false;
54 return true;
55 }
57 /////////////////// helper functions
59 /**
60 * A wrapper for strcasestr that also provides an implementation for Win32.
61 */
62 static bool
63 ink_strstr(char const *haystack, char const *pneedle)
64 {
65 // windows has no strcasestr implementation, so here is ours...
66 // stolen from nmap
67 /* FIXME: This is broken for e.g. ink_strstr("aab", "ab"). Report to nmap.
68 *
69 * Also, suggest use of g_ascii_todown instead of buffer stuff, and g_ascii_tolower instead
70 * of tolower. Given that haystack is a font name (i.e. fairly short), it should be ok to
71 * do g_ascii_strdown on both haystack and pneedle, and do normal strstr.
72 *
73 * Rather than fixing in inkscape, consider getting rid of this routine, instead using
74 * strdown and plain strstr at caller. We have control over the needle values, so we can
75 * modify the callers rather than calling strdown there.
76 */
77 char buf[512];
78 register char const *p;
79 char *needle, *q, *foundto;
80 if (!*pneedle) return true;
81 if (!haystack) return false;
83 needle = buf;
84 p = pneedle; q = needle;
85 while ((*q++ = tolower(*p++)))
86 ;
87 p = haystack - 1; foundto = needle;
88 while (*++p) {
89 if (tolower(*p) == *foundto) {
90 if (!*++foundto) {
91 /* Yeah, we found it */
92 return true;
93 }
94 } else foundto = needle;
95 }
96 return false;
97 }
99 /**
100 * Regular fonts are 'Regular', 'Roman', 'Normal', or 'Plain'
101 */
102 // FIXME: make this UTF8, add non-English style names
103 static bool
104 is_regular(char const *s)
105 {
106 if (ink_strstr(s, "Regular")) return true;
107 if (ink_strstr(s, "Roman")) return true;
108 if (ink_strstr(s, "Normal")) return true;
109 if (ink_strstr(s, "Plain")) return true;
110 return false;
111 }
113 /**
114 * Non-bold fonts are 'Medium' or 'Book'
115 */
116 static bool
117 is_nonbold(char const *s)
118 {
119 if (ink_strstr(s, "Medium")) return true;
120 if (ink_strstr(s, "Book")) return true;
121 return false;
122 }
124 /**
125 * Italic fonts are 'Italic', 'Oblique', or 'Slanted'
126 */
127 static bool
128 is_italic(char const *s)
129 {
130 if (ink_strstr(s, "Italic")) return true;
131 if (ink_strstr(s, "Oblique")) return true;
132 if (ink_strstr(s, "Slanted")) return true;
133 return false;
134 }
136 /**
137 * Bold fonts are 'Bold'
138 */
139 static bool
140 is_bold(char const *s)
141 {
142 if (ink_strstr(s, "Bold")) return true;
143 return false;
144 }
146 /**
147 * Caps fonts are 'Caps'
148 */
149 static bool
150 is_caps(char const *s)
151 {
152 if (ink_strstr(s, "Caps")) return true;
153 return false;
154 }
156 #if 0 /* FIXME: These are all unused. Please delete them or use them (presumably in
157 * style_name_compare). */
158 /**
159 * Monospaced fonts are 'Mono'
160 */
161 static bool
162 is_mono(char const *s)
163 {
164 if (ink_strstr(s, "Mono")) return true;
165 return false;
166 }
168 /**
169 * Rounded fonts are 'Round'
170 */
171 static bool
172 is_round(char const *s)
173 {
174 if (ink_strstr(s, "Round")) return true;
175 return false;
176 }
178 /**
179 * Outline fonts are 'Outline'
180 */
181 static bool
182 is_outline(char const *s)
183 {
184 if (ink_strstr(s, "Outline")) return true;
185 return false;
186 }
188 /**
189 * Swash fonts are 'Swash'
190 */
191 static bool
192 is_swash(char const *s)
193 {
194 if (ink_strstr(s, "Swash")) return true;
195 return false;
196 }
197 #endif
199 /**
200 * Determines if two style names match. This allows us to match
201 * based on the type of style rather than simply doing string matching,
202 * because for instance 'Plain' and 'Normal' mean the same thing.
203 *
204 * Q: Shouldn't this include the other tests such as is_outline, etc.?
205 * Q: Is there a problem with strcasecmp on Win32? Should it use stricmp?
206 */
207 int
208 style_name_compare(char const *aa, char const *bb)
209 {
210 char const *a = (char const *) aa;
211 char const *b = (char const *) bb;
213 if (is_regular(a) && !is_regular(b)) return -1;
214 if (is_regular(b) && !is_regular(a)) return 1;
216 if (is_bold(a) && !is_bold(b)) return 1;
217 if (is_bold(b) && !is_bold(a)) return -1;
219 if (is_italic(a) && !is_italic(b)) return 1;
220 if (is_italic(b) && !is_italic(a)) return -1;
222 if (is_nonbold(a) && !is_nonbold(b)) return 1;
223 if (is_nonbold(b) && !is_nonbold(a)) return -1;
225 if (is_caps(a) && !is_caps(b)) return 1;
226 if (is_caps(b) && !is_caps(a)) return -1;
228 return strcasecmp(a, b);
229 }
231 static int
232 style_record_compare(void const *aa, void const *bb)
233 {
234 NRStyleRecord const *a = (NRStyleRecord const *) aa;
235 NRStyleRecord const *b = (NRStyleRecord const *) bb;
237 return (style_name_compare(a->name, b->name));
238 }
240 static void font_factory_name_list_destructor(NRNameList *list)
241 {
242 for (unsigned int i = 0; i < list->length; i++)
243 g_free(list->names[i]);
244 if ( list->names ) g_free(list->names);
245 }
247 static void font_factory_style_list_destructor(NRStyleList *list)
248 {
249 for (unsigned int i = 0; i < list->length; i++) {
250 g_free((void *) (list->records)[i].name);
251 g_free((void *) (list->records)[i].descr);
252 }
253 if ( list->records ) g_free(list->records);
254 }
256 /**
257 * On Win32 performs a stricmp(a,b), otherwise does a strcasecmp(a,b)
258 */
259 int
260 family_name_compare(char const *a, char const *b)
261 {
262 #ifndef WIN32
263 return strcasecmp((*((char const **) a)), (*((char const **) b)));
264 #else
265 return stricmp((*((char const **) a)), (*((char const **) b)));
266 #endif
267 }
269 void noop(...) {}
270 //#define PANGO_DEBUG g_print
271 #define PANGO_DEBUG noop
275 ///////////////////// FontFactory
276 #ifndef USE_PANGO_WIN32
277 // the substitute function to tell fontconfig to enforce outline fonts
278 void FactorySubstituteFunc(FcPattern *pattern,gpointer /*data*/)
279 {
280 FcPatternAddBool(pattern, "FC_OUTLINE",FcTrue);
281 //char *fam = NULL;
282 //FcPatternGetString(pattern, "FC_FAMILY",0, &fam);
283 //printf("subst_f on %s\n",fam);
284 }
285 #endif
288 font_factory *font_factory::lUsine = NULL;
290 font_factory *font_factory::Default(void)
291 {
292 if ( lUsine == NULL ) lUsine = new font_factory;
293 return lUsine;
294 }
296 font_factory::font_factory(void)
297 {
298 fontSize = 512;
299 nbEnt = 0;
300 maxEnt = 32;
301 ents = (font_entry*)g_malloc(maxEnt*sizeof(font_entry));
303 #ifdef USE_PANGO_WIN32
304 hScreenDC = pango_win32_get_dc();
305 fontServer = pango_win32_font_map_for_display();
306 fontContext = pango_win32_get_context();
307 pangoFontCache = pango_win32_font_map_get_font_cache(fontServer);
308 #else
309 fontServer = pango_ft2_font_map_new();
310 pango_ft2_font_map_set_resolution((PangoFT2FontMap*)fontServer, 72, 72);
311 fontContext = pango_ft2_font_map_create_context((PangoFT2FontMap*)fontServer);
312 pango_ft2_font_map_set_default_substitute((PangoFT2FontMap*)fontServer,FactorySubstituteFunc,this,NULL);
313 #endif
314 }
316 font_factory::~font_factory(void)
317 {
318 for (int i = 0;i < nbEnt;i++) ents[i].f->Unref();
319 if ( ents ) g_free(ents);
321 g_object_unref(fontServer);
322 #ifdef USE_PANGO_WIN32
323 pango_win32_shutdown_display();
324 #else
325 //pango_ft2_shutdown_display();
326 #endif
327 //g_object_unref(fontContext);
329 // Delete the pango font pointers in the string to instance map
330 PangoStringToDescrMap::iterator it = fontInstanceMap.begin();
331 while (it != fontInstanceMap.end()) {
332 pango_font_description_free((*it).second);
333 it++;
334 }
335 }
338 Glib::ustring font_factory::ConstructFontSpecification(PangoFontDescription *font)
339 {
340 Glib::ustring pangoString;
342 g_assert(font);
344 if (font) {
345 // Once the format for the font specification is decided, it must be
346 // kept.. if it is absolutely necessary to change it, the attribute
347 // it is written to needs to have a new version so the legacy files
348 // can be read.
350 PangoFontDescription *copy = pango_font_description_copy(font);
352 pango_font_description_unset_fields (copy, PANGO_FONT_MASK_SIZE);
353 pangoString = Glib::ustring(pango_font_description_to_string(copy));
355 pango_font_description_free(copy);
357 }
359 return pangoString;
360 }
362 Glib::ustring font_factory::ConstructFontSpecification(font_instance *font)
363 {
364 Glib::ustring pangoString;
366 g_assert(font);
368 if (font) {
369 pangoString = ConstructFontSpecification(font->descr);
370 }
372 return pangoString;
373 }
375 Glib::ustring font_factory::GetUIFamilyString(PangoFontDescription const *fontDescr)
376 {
377 Glib::ustring family;
379 g_assert(fontDescr);
381 if (fontDescr) {
382 // For now, keep it as family name taken from pango
383 family = pango_font_description_get_family(fontDescr);
384 }
386 return family;
387 }
389 Glib::ustring font_factory::GetUIStyleString(PangoFontDescription const *fontDescr)
390 {
391 Glib::ustring style;
393 g_assert(fontDescr);
395 if (fontDescr) {
396 PangoFontDescription *fontDescrCopy = pango_font_description_copy(fontDescr);
398 pango_font_description_unset_fields(fontDescrCopy, PANGO_FONT_MASK_FAMILY);
399 pango_font_description_unset_fields(fontDescrCopy, PANGO_FONT_MASK_SIZE);
401 // For now, keep it as style name taken from pango
402 style = pango_font_description_to_string(fontDescrCopy);
404 pango_font_description_free(fontDescrCopy);
405 }
407 return style;
408 }
410 Glib::ustring font_factory::ReplaceFontSpecificationFamily(const Glib::ustring & fontSpec, const Glib::ustring & newFamily)
411 {
412 Glib::ustring newFontSpec;
414 // Although we are using the string from pango_font_description_to_string for the
415 // font specification, we definitely cannot just set the new family in the
416 // PangoFontDescription structure and ask for a new string. This is because
417 // what constitutes a "family" in our own UI may be different from how Pango
418 // sees it.
420 // Find the PangoFontDescription associated to this fontSpec
421 PangoStringToDescrMap::iterator it = fontInstanceMap.find(fontSpec);
423 if (it != fontInstanceMap.end()) {
424 PangoFontDescription *descr = pango_font_description_copy((*it).second);
426 // Grab the UI Family string from the descr
427 Glib::ustring uiFamily = GetUIFamilyString(descr);
429 // Replace the UI Family name with the new family name
430 std::size_t found = fontSpec.find(uiFamily);
431 if (found != Glib::ustring::npos) {
432 newFontSpec = fontSpec;
433 newFontSpec.erase(found, uiFamily.size());
434 newFontSpec.insert(found, newFamily);
436 // If the new font specification does not exist in the reference maps,
437 // search for the next best match for the faces in that style
438 it = fontInstanceMap.find(newFontSpec);
439 if (it == fontInstanceMap.end()) {
441 PangoFontDescription *newFontDescr = pango_font_description_from_string(newFontSpec.c_str());
443 PangoFontDescription *bestMatchForNewDescr = NULL;
444 Glib::ustring bestMatchFontDescription;
446 bool setFirstFamilyMatch = false;
447 for (it = fontInstanceMap.begin(); it != fontInstanceMap.end(); it++) {
449 Glib::ustring currentFontSpec = (*it).first;
451 // Save some time by only looking at the right family
452 if (currentFontSpec.find(newFamily) != Glib::ustring::npos) {
453 if (!setFirstFamilyMatch) {
454 // This ensures that the closest match is at least within the correct
455 // family rather than the first font in the list
456 bestMatchForNewDescr = pango_font_description_copy((*it).second);
457 bestMatchFontDescription = currentFontSpec;
458 setFirstFamilyMatch = true;
459 } else {
460 // Get the font description that corresponds, and
461 // then see if we've found a better match
462 PangoFontDescription *possibleMatch = pango_font_description_copy((*it).second);
464 if (pango_font_description_better_match(
465 newFontDescr, bestMatchForNewDescr, possibleMatch)) {
467 pango_font_description_free(bestMatchForNewDescr);
468 bestMatchForNewDescr = possibleMatch;
469 bestMatchFontDescription = currentFontSpec;
470 } else {
471 pango_font_description_free(possibleMatch);
472 }
473 }
474 }
475 }
477 newFontSpec = bestMatchFontDescription;
479 pango_font_description_free(newFontDescr);
480 pango_font_description_free(bestMatchForNewDescr);
481 }
482 }
484 pango_font_description_free(descr);
485 }
487 return newFontSpec;
488 }
490 Glib::ustring font_factory::FontSpecificationSetItalic(const Glib::ustring & fontSpec, bool turnOn)
491 {
492 Glib::ustring newFontSpec;
494 // Find the PangoFontDesecription that goes with this font specification string
495 PangoStringToDescrMap::iterator it = fontInstanceMap.find(fontSpec);
497 if (it != fontInstanceMap.end()) {
498 // If we did find one, make a copy and set/unset the italic as needed
499 PangoFontDescription *descr = pango_font_description_copy((*it).second);
501 PangoStyle style;
502 if (turnOn) {
503 style = PANGO_STYLE_ITALIC;
504 } else {
505 style = PANGO_STYLE_NORMAL;
506 }
507 pango_font_description_set_style(descr, style);
509 newFontSpec = ConstructFontSpecification(descr);
510 if (fontInstanceMap.find(newFontSpec) == fontInstanceMap.end()) {
511 // If the new font does not have an italic face, don't
512 // allow italics to be set!
513 newFontSpec = fontSpec;
514 }
516 pango_font_description_free(descr);
517 }
519 return newFontSpec;
520 }
522 Glib::ustring font_factory::FontSpecificationSetBold(const Glib::ustring & fontSpec, bool turnOn)
523 {
524 Glib::ustring newFontSpec;
526 // Find the PangoFontDesecription that goes with this font specification string
527 PangoStringToDescrMap::iterator it = fontInstanceMap.find(fontSpec);
529 if (it != fontInstanceMap.end()) {
530 // If we did find one, make a copy and set/unset the bold as needed
531 PangoFontDescription *descr = pango_font_description_copy((*it).second);
533 PangoWeight weight;
534 if (turnOn) {
535 weight = PANGO_WEIGHT_BOLD;
536 } else {
537 weight = PANGO_WEIGHT_NORMAL;
538 }
539 pango_font_description_set_weight(descr, weight);
541 newFontSpec = ConstructFontSpecification(descr);
542 if (fontInstanceMap.find(newFontSpec) == fontInstanceMap.end()) {
543 // If the new font does not have a bold face, don't
544 // allow bold to be set!
545 newFontSpec = fontSpec;
546 }
548 pango_font_description_free(descr);
549 }
551 return newFontSpec;
552 }
554 /////
556 static bool StyleNameCompareInternal(Glib::ustring style1, Glib::ustring style2)
557 {
558 return (style_name_compare(style1.c_str(), style2.c_str()) < 0);
559 }
561 void font_factory::GetUIFamiliesAndStyles(FamilyToStylesMap *map)
562 {
563 g_assert(map);
565 if (map) {
567 // Gather the family names as listed by Pango
568 PangoFontFamily** families = NULL;
569 int numFamilies = 0;
570 pango_font_map_list_families(fontServer, &families, &numFamilies);
572 for (int currentFamily=0; currentFamily < numFamilies; currentFamily++) {
574 // Gather the styles for this family
575 PangoFontFace** faces = NULL;
576 int numFaces = 0;
577 pango_font_family_list_faces(families[currentFamily], &faces, &numFaces);
579 for (int currentFace=0; currentFace < numFaces; currentFace++) {
581 // If the face has a name, describe it, and then use the
582 // description to get the UI family and face strings
584 if (pango_font_face_get_face_name(faces[currentFace]) == NULL) {
585 continue;
586 }
588 PangoFontDescription *faceDescr = pango_font_face_describe(faces[currentFace]);
589 if (faceDescr) {
590 Glib::ustring familyUIName = GetUIFamilyString(faceDescr);
591 Glib::ustring styleUIName = GetUIStyleString(faceDescr);
593 if (!familyUIName.empty() && !styleUIName.empty()) {
594 // Find the right place to put the style information, adding
595 // a map entry for the family name if it doesn't yet exist
597 FamilyToStylesMap::iterator iter = map->find(familyUIName);
599 if (iter == map->end()) {
600 map->insert(std::make_pair(familyUIName, std::list<Glib::ustring>()));
601 }
603 // Insert into the style list and save the info in the reference maps
604 // only if the style does not yet exist
606 bool exists = false;
607 std::list<Glib::ustring> &styleList = (*map)[familyUIName];
609 for (std::list<Glib::ustring>::iterator it=styleList.begin();
610 it != styleList.end();
611 it++) {
612 if (*it == styleUIName) {
613 exists = true;
614 break;
615 }
616 }
618 if (!exists) {
619 styleList.push_back(styleUIName);
621 // Add the string info needed in the reference maps
622 fontStringMap.insert(
623 std::make_pair(
624 Glib::ustring(familyUIName) + Glib::ustring(styleUIName),
625 ConstructFontSpecification(faceDescr)));
626 fontInstanceMap.insert(
627 std::make_pair(ConstructFontSpecification(faceDescr), faceDescr));
628 } else {
629 pango_font_description_free(faceDescr);
630 }
631 } else {
632 pango_font_description_free(faceDescr);
633 }
634 }
635 }
636 }
638 // Sort the style lists
639 for (FamilyToStylesMap::iterator iter = map->begin() ; iter != map->end(); iter++) {
640 (*iter).second.sort(StyleNameCompareInternal);
641 }
642 }
643 }
645 font_instance* font_factory::FaceFromStyle(SPStyle const *style)
646 {
647 font_instance *font = NULL;
649 g_assert(style);
651 if (style) {
652 // First try to use the font specification if it is set
653 if (style->text->font_specification.set
654 && style->text->font_specification.value
655 && *style->text->font_specification.value) {
657 font = FaceFromFontSpecification(style->text->font_specification.value);
658 }
660 // If that failed, try using the CSS information in the style
661 if (!font) {
662 font = Face(style->text->font_family.value, font_style_to_pos(*style));
663 }
664 }
666 return font;
667 }
669 font_instance *font_factory::FaceFromDescr(char const *family, char const *style)
670 {
671 PangoFontDescription *temp_descr = pango_font_description_from_string(style);
672 pango_font_description_set_family(temp_descr,family);
673 font_instance *res = Face(temp_descr);
674 pango_font_description_free(temp_descr);
675 return res;
676 }
678 font_instance* font_factory::FaceFromUIStrings(char const *uiFamily, char const *uiStyle)
679 {
680 font_instance *fontInstance = NULL;
682 g_assert(uiFamily && uiStyle);
683 if (uiFamily && uiStyle) {
684 Glib::ustring uiString = Glib::ustring(uiFamily) + Glib::ustring(uiStyle);
686 UIStringToPangoStringMap::iterator uiToPangoIter = fontStringMap.find(uiString);
688 if (uiToPangoIter != fontStringMap.end ()) {
689 PangoStringToDescrMap::iterator pangoToDescrIter = fontInstanceMap.find((*uiToPangoIter).second);
690 if (pangoToDescrIter != fontInstanceMap.end()) {
691 // We found the pango description - now we can make a font_instance
692 PangoFontDescription *tempDescr = pango_font_description_copy((*pangoToDescrIter).second);
693 fontInstance = Face(tempDescr);
694 pango_font_description_free(tempDescr);
695 }
696 }
697 }
699 return fontInstance;
700 }
702 font_instance* font_factory::FaceFromPangoString(char const *pangoString)
703 {
704 font_instance *fontInstance = NULL;
706 g_assert(pangoString);
708 if (pangoString) {
709 PangoFontDescription *descr = NULL;
711 // First attempt to find the font specification in the reference map
712 PangoStringToDescrMap::iterator it = fontInstanceMap.find(Glib::ustring(pangoString));
713 if (it != fontInstanceMap.end()) {
714 descr = pango_font_description_copy((*it).second);
715 }
717 // Or create a font description from the string - this may fail or
718 // produce unexpected results if the string does not have a good format
719 if (!descr) {
720 descr = pango_font_description_from_string(pangoString);
721 }
723 if (descr && (pango_font_description_get_family(descr) != NULL)) {
724 fontInstance = Face(descr);
725 }
727 if (descr) {
728 pango_font_description_free(descr);
729 }
730 }
732 return fontInstance;
733 }
735 font_instance* font_factory::FaceFromFontSpecification(char const *fontSpecification)
736 {
737 font_instance *font = NULL;
739 g_assert(fontSpecification);
741 if (fontSpecification) {
742 // How the string is used to reconstruct a font depends on how it
743 // was constructed in ConstructFontSpecification. As it stands,
744 // the font specification is a pango-created string
745 font = FaceFromPangoString(fontSpecification);
746 }
748 return font;
749 }
753 font_instance *font_factory::Face(PangoFontDescription *descr, bool canFail)
754 {
755 #ifdef USE_PANGO_WIN32
756 // damn Pango fudges the size, so we need to unfudge. See source of pango_win32_font_map_init()
757 pango_font_description_set_size(descr, (int) (fontSize*PANGO_SCALE*72/GetDeviceCaps(pango_win32_get_dc(),LOGPIXELSY))); // mandatory huge size (hinting workaround)
758 #else
759 pango_font_description_set_size(descr, (int) (fontSize*PANGO_SCALE)); // mandatory huge size (hinting workaround)
760 #endif
762 font_instance *res = NULL;
764 if ( loadedFaces.find(descr) == loadedFaces.end() ) {
765 // not yet loaded
766 PangoFont *nFace = NULL;
768 // workaround for bug #1025565.
769 // fonts without families blow up Pango.
770 if (pango_font_description_get_family(descr) != NULL) {
771 nFace = pango_font_map_load_font(fontServer,fontContext,descr);
772 }
773 else {
774 g_warning(_("Ignoring font without family that will crash Pango"));
775 }
777 if ( nFace ) {
778 // duplicate FcPattern, the hard way
779 res = new font_instance();
780 // store the descr of the font we asked for, since this is the key where we intend to put the font_instance at
781 // in the hash_map. the descr of the returned pangofont may differ from what was asked, so we don't know (at this
782 // point) whether loadedFaces[that_descr] is free or not (and overwriting an entry will bring deallocation problems)
783 res->descr = pango_font_description_copy(descr);
784 res->daddy = this;
785 res->InstallFace(nFace);
786 if ( res->pFont == NULL ) {
787 // failed to install face -> bitmap font
788 // printf("face failed\n");
789 res->daddy = NULL;
790 delete res;
791 res = NULL;
792 if ( canFail ) {
793 char *tc = pango_font_description_to_string(descr);
794 PANGO_DEBUG("falling back from %s to Sans because InstallFace failed\n",tc);
795 g_free(tc);
796 pango_font_description_set_family(descr,"Sans");
797 res = Face(descr,false);
798 }
799 } else {
800 loadedFaces[res->descr]=res;
801 res->Ref();
802 AddInCache(res);
803 }
804 } else {
805 // no match
806 if ( canFail ) {
807 PANGO_DEBUG("falling back to Sans\n");
808 descr = pango_font_description_new();
809 pango_font_description_set_family(descr,"Sans");
810 res = Face(descr,false);
811 pango_font_description_free(descr);
812 }
813 }
814 } else {
815 // already here
816 res = loadedFaces[descr];
817 res->Ref();
818 AddInCache(res);
819 }
820 res->InitTheFace();
821 return res;
822 }
824 font_instance *font_factory::Face(char const *family, int variant, int style, int weight, int stretch, int /*size*/, int /*spacing*/)
825 {
826 PangoFontDescription *temp_descr = pango_font_description_new();
827 pango_font_description_set_family(temp_descr,family);
828 pango_font_description_set_weight(temp_descr,(PangoWeight)weight);
829 pango_font_description_set_stretch(temp_descr,(PangoStretch)stretch);
830 pango_font_description_set_style(temp_descr,(PangoStyle)style);
831 pango_font_description_set_variant(temp_descr,(PangoVariant)variant);
832 font_instance *res = Face(temp_descr);
833 pango_font_description_free(temp_descr);
834 return res;
835 }
837 font_instance *font_factory::Face(char const *family, NRTypePosDef apos)
838 {
839 PangoFontDescription *temp_descr = pango_font_description_new();
841 pango_font_description_set_family(temp_descr, family);
843 if ( apos.variant == NR_POS_VARIANT_SMALLCAPS ) {
844 pango_font_description_set_variant(temp_descr, PANGO_VARIANT_SMALL_CAPS);
845 } else {
846 pango_font_description_set_variant(temp_descr, PANGO_VARIANT_NORMAL);
847 }
849 if ( apos.italic ) {
850 pango_font_description_set_style(temp_descr, PANGO_STYLE_ITALIC);
851 } else if ( apos.oblique ) {
852 pango_font_description_set_style(temp_descr, PANGO_STYLE_OBLIQUE);
853 } else {
854 pango_font_description_set_style(temp_descr, PANGO_STYLE_NORMAL);
855 }
857 if ( apos.weight <= NR_POS_WEIGHT_ULTRA_LIGHT ) {
858 pango_font_description_set_weight(temp_descr, PANGO_WEIGHT_ULTRALIGHT);
859 } else if ( apos.weight <= NR_POS_WEIGHT_LIGHT ) {
860 pango_font_description_set_weight(temp_descr, PANGO_WEIGHT_LIGHT);
861 } else if ( apos.weight <= NR_POS_WEIGHT_NORMAL ) {
862 pango_font_description_set_weight(temp_descr, PANGO_WEIGHT_NORMAL);
863 } else if ( apos.weight <= NR_POS_WEIGHT_BOLD ) {
864 pango_font_description_set_weight(temp_descr, PANGO_WEIGHT_BOLD);
865 } else if ( apos.weight <= NR_POS_WEIGHT_ULTRA_BOLD ) {
866 pango_font_description_set_weight(temp_descr, PANGO_WEIGHT_ULTRABOLD);
867 } else {
868 pango_font_description_set_weight(temp_descr, PANGO_WEIGHT_HEAVY);
869 }
871 if ( apos.stretch <= NR_POS_STRETCH_ULTRA_CONDENSED ) {
872 pango_font_description_set_stretch(temp_descr, PANGO_STRETCH_EXTRA_CONDENSED);
873 } else if ( apos.stretch <= NR_POS_STRETCH_CONDENSED ) {
874 pango_font_description_set_stretch(temp_descr, PANGO_STRETCH_CONDENSED);
875 } else if ( apos.stretch <= NR_POS_STRETCH_SEMI_CONDENSED ) {
876 pango_font_description_set_stretch(temp_descr, PANGO_STRETCH_SEMI_CONDENSED);
877 } else if ( apos.stretch <= NR_POS_WEIGHT_NORMAL ) {
878 pango_font_description_set_stretch(temp_descr, PANGO_STRETCH_NORMAL);
879 } else if ( apos.stretch <= NR_POS_STRETCH_SEMI_EXPANDED ) {
880 pango_font_description_set_stretch(temp_descr, PANGO_STRETCH_SEMI_EXPANDED);
881 } else if ( apos.stretch <= NR_POS_STRETCH_EXPANDED ) {
882 pango_font_description_set_stretch(temp_descr, PANGO_STRETCH_EXPANDED);
883 } else {
884 pango_font_description_set_stretch(temp_descr, PANGO_STRETCH_EXTRA_EXPANDED);
885 }
887 font_instance *res = Face(temp_descr);
888 pango_font_description_free(temp_descr);
889 return res;
890 }
892 void font_factory::UnrefFace(font_instance *who)
893 {
894 if ( who == NULL ) return;
895 if ( loadedFaces.find(who->descr) == loadedFaces.end() ) {
896 // not found
897 char *tc = pango_font_description_to_string(who->descr);
898 g_warning("unrefFace %p=%s: failed\n",who,tc);
899 g_free(tc);
900 } else {
901 loadedFaces.erase(loadedFaces.find(who->descr));
902 // printf("unrefFace %p: success\n",who);
903 }
904 }
906 void font_factory::AddInCache(font_instance *who)
907 {
908 if ( who == NULL ) return;
909 for (int i = 0;i < nbEnt;i++) ents[i].age *= 0.9;
910 for (int i = 0;i < nbEnt;i++) {
911 if ( ents[i].f == who ) {
912 // printf("present\n");
913 ents[i].age += 1.0;
914 return;
915 }
916 }
917 if ( nbEnt > maxEnt ) {
918 printf("cache sur-plein?\n");
919 return;
920 }
921 who->Ref();
922 if ( nbEnt == maxEnt ) {
923 int bi = 0;
924 double ba = ents[bi].age;
925 for (int i = 1;i < nbEnt;i++) {
926 if ( ents[i].age < ba ) {
927 bi = i;
928 ba = ents[bi].age;
929 }
930 }
931 ents[bi].f->Unref();
932 ents[bi]=ents[--nbEnt];
933 }
934 ents[nbEnt].f = who;
935 ents[nbEnt].age = 1.0;
936 nbEnt++;
937 }
940 /*
941 Local Variables:
942 mode:c++
943 c-file-style:"stroustrup"
944 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
945 indent-tabs-mode:nil
946 fill-column:99
947 End:
948 */
949 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :