source/blender/blenkernel/intern/font.c

   1 /*  font.c
   2  *
   3  *
   4  * $Id$
   5  *
   6  * ***** BEGIN GPL LICENSE BLOCK *****
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * as published by the Free Software Foundation; either version 2
  11  * of the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software Foundation,
  20  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  21  *
  22  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
  23  * All rights reserved.
  24  *
  25  * The Original Code is: all of this file.
  26  *
  27  * Contributor(s): none yet.
  28  *
  29  * ***** END GPL LICENSE BLOCK *****
  30  */
  31
  32 #include <stdio.h>
  33 #include <string.h>
  34 #include <math.h>
  35 #include <stdlib.h>
  36 #include <wchar.h>
  37
  38 #ifdef HAVE_CONFIG_H
  39 #include <config.h>
  40 #endif
  41
  42 #include "MEM_guardedalloc.h"
  43
  44 #include "BLI_math.h"
  45 #include "BLI_blenlib.h"
  46 #include "BLI_vfontdata.h"
  47
  48 #include "DNA_packedFile_types.h"
  49 #include "DNA_curve_types.h"
  50 #include "DNA_vfont_types.h"
  51 #include "DNA_scene_types.h"
  52
  53 #include "BKE_utildefines.h"
  54
  55 #include "BKE_packedFile.h"
  56
  57 #include "BKE_library.h"
  58 #include "BKE_font.h"
  59 #include "BKE_global.h"
  60 #include "BKE_main.h"
  61 #include "BKE_anim.h"
  62 #include "BKE_curve.h"
  63 #include "BKE_displist.h"
  64
  65 static ListBase ttfdata= {NULL, NULL};
  66
  67 /* UTF-8 <-> wchar transformations */
  68 void
  69 chtoutf8(unsigned long c, char *o)
  70 {
  71         // Variables and initialization
  72 /*      memset(o, 0, 16);       */
  73
  74         // Create the utf-8 string
  75         if (c < 0x80)
  76         {
  77                 o[0] = (char) c;
  78         }
  79         else if (c < 0x800)
  80         {
  81                 o[0] = (0xC0 | (c>>6));
  82                 o[1] = (0x80 | (c & 0x3f));
  83         }
  84         else if (c < 0x10000)
  85         {
  86                 o[0] = (0xe0 | (c >> 12));
  87                 o[1] = (0x80 | (c >>6 & 0x3f));
  88                 o[2] = (0x80 | (c & 0x3f));
  89         }
  90         else if (c < 0x200000)
  91         {
  92         o[0] = (0xf0 | (c>>18));
  93         o[1] = (0x80 | (c >>12 & 0x3f));
  94         o[2] = (0x80 | (c >> 6 & 0x3f));
  95         o[3] = (0x80 | (c & 0x3f));
  96         }
  97 }
  98
  99 void
 100 wcs2utf8s(char *dst, wchar_t *src)
 101 {
 102         char ch[5];
 103
 104         while(*src)
 105         {
 106                 memset(ch, 0, 5);
 107                 chtoutf8(*src++, ch);
 108                 strcat(dst, ch);
 109         }
 110 }
 111
 112 int
 113 wcsleninu8(wchar_t *src)
 114 {
 115         char ch[16];
 116         int len = 0;
 117
 118         while(*src)
 119         {
 120                 memset(ch, 0, 16);
 121                 chtoutf8(*src++, ch);
 122                 len = len + strlen(ch);
 123         }
 124
 125         return len;
 126 }
 127
 128 int
 129 static utf8slen(char *src)
 130 {
 131         int size = 0, index = 0;
 132         unsigned char c;
 133
 134         c = src[index++];
 135         while(c)
 136         {
 137                 if((c & 0x80) == 0)
 138                 {
 139                         index += 0;
 140                 }
 141                 else if((c & 0xe0) == 0xe0)
 142                 {
 143                         index += 2;
 144                 }
 145                 else
 146                 {
 147                         index += 1;
 148                 }
 149                 size += 1;
 150                 c = src[index++];
 151         }
 152
 153         return size;
 154 }
 155
 156
 157 /* Converts Unicode to wchar
 158
 159 According to RFC 3629 "UTF-8, a transformation format of ISO 10646"
 160 (http://tools.ietf.org/html/rfc3629), the valid UTF-8 encoding are:
 161
 162   Char. number range  |        UTF-8 octet sequence
 163       (hexadecimal)    |              (binary)
 164    --------------------+---------------------------------------------
 165    0000 0000-0000 007F | 0xxxxxxx
 166    0000 0080-0000 07FF | 110xxxxx 10xxxxxx
 167    0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx
 168    0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
 169
 170 If the encoding incidated by the first character is incorrect (because the
 171 1 to 3 following characters do not match 10xxxxxx), the output is a '?' and
 172 only a single input character is consumed.
 173
 174 */
 175
 176 int utf8towchar(wchar_t *w, char *c)
 177 {
 178         int len=0;
 179
 180         if(w==NULL || c==NULL) return(0);
 181
 182         while(*c) {
 183                 if ((*c & 0xe0) == 0xc0) {
 184                         if((c[1] & 0x80) && (c[1] & 0x40) == 0x00) {
 185                                 *w=((c[0] &0x1f)<<6) | (c[1]&0x3f);
 186                                 c++;
 187                         } else {
 188                                 *w = '?';
 189                         }
 190                 } else if ((*c & 0xf0) == 0xe0) {
 191                         if((c[1] & c[2] & 0x80) && ((c[1] | c[2]) & 0x40) == 0x00) {
 192                                 *w=((c[0] & 0x0f)<<12) | ((c[1]&0x3f)<<6) | (c[2]&0x3f);
 193                                 c += 2;
 194                         } else {
 195                                 *w = '?';
 196                         }
 197                 } else if ((*c & 0xf8) == 0xf0) {
 198                         if((c[1] & c[2] & c[3] & 0x80) && ((c[1] | c[2] | c[3]) & 0x40) == 0x00) {
 199                                 *w=((c[0] & 0x07)<<18) | ((c[1]&0x1f)<<12) | ((c[2]&0x3f)<<6) | (c[3]&0x3f);
 200                                 c += 3;
 201                         } else {
 202                                 *w = '?';
 203                         }
 204                 } else
 205                     *w=(c[0] & 0x7f);
 206
 207                 c++;
 208                 w++;
 209                 len++;
 210         }
 211         return len;
 212 }
 213
 214 /* The vfont code */
 215 void free_vfont(struct VFont *vf)
 216 {
 217         if (vf == 0) return;
 218
 219         if (vf->data) {
 220                 while(vf->data->characters.first)
 221                 {
 222                         VChar *che = vf->data->characters.first;
 223
 224                         while (che->nurbsbase.first) {
 225                                 Nurb *nu = che->nurbsbase.first;
 226                                 if (nu->bezt) MEM_freeN(nu->bezt);
 227                                 BLI_freelinkN(&che->nurbsbase, nu);
 228                         }
 229
 230                         BLI_freelinkN(&vf->data->characters, che);
 231                 }
 232
 233                 MEM_freeN(vf->data);
 234                 vf->data = NULL;
 235         }
 236
 237         if (vf->packedfile) {
 238                 freePackedFile(vf->packedfile);
 239                 vf->packedfile = NULL;
 240         }
 241 }
 242
 243 static void *builtin_font_data= NULL;
 244 static int builtin_font_size= 0;
 245
 246 void BKE_font_register_builtin(void *mem, int size)
 247 {
 248         builtin_font_data= mem;
 249         builtin_font_size= size;
 250 }
 251
 252 static PackedFile *get_builtin_packedfile(void)
 253 {
 254         if (!builtin_font_data) {
 255                 printf("Internal error, builtin font not loaded\n");
 256
 257                 return NULL;
 258         } else {
 259                 void *mem= MEM_mallocN(builtin_font_size, "vfd_builtin");
 260
 261                 memcpy(mem, builtin_font_data, builtin_font_size);
 262
 263                 return newPackedFileMemory(mem, builtin_font_size);
 264         }
 265 }
 266
 267 void free_ttfont(void)
 268 {
 269         struct TmpFont *tf;
 270
 271         tf= ttfdata.first;
 272         while(tf) {
 273                 freePackedFile(tf->pf);
 274                 tf->pf= NULL;
 275                 tf->vfont= NULL;
 276                 tf= tf->next;
 277         }
 278         BLI_freelistN(&ttfdata);
 279 }
 280
 281 struct TmpFont *vfont_find_tmpfont(VFont *vfont)
 282 {
 283         struct TmpFont *tmpfnt = NULL;
 284
 285         if(vfont==NULL) return NULL;
 286
 287         // Try finding the font from font list
 288         tmpfnt = ttfdata.first;
 289         while(tmpfnt)
 290         {
 291                 if(tmpfnt->vfont == vfont)
 292                         break;
 293                 tmpfnt = tmpfnt->next;
 294         }
 295         return tmpfnt;
 296 }
 297
 298 static VFontData *vfont_get_data(VFont *vfont)
 299 {
 300         struct TmpFont *tmpfnt = NULL;
 301         PackedFile *tpf;
 302
 303         if(vfont==NULL) return NULL;
 304
 305         // Try finding the font from font list
 306         tmpfnt = vfont_find_tmpfont(vfont);
 307
 308         // And then set the data
 309         if (!vfont->data) {
 310                 PackedFile *pf;
 311
 312                 if (BLI_streq(vfont->name, "<builtin>")) {
 313                         pf= get_builtin_packedfile();
 314                 } else {
 315                         if (vfont->packedfile) {
 316                                 pf= vfont->packedfile;
 317
 318                                 // We need to copy a tmp font to memory unless it is already there
 319                                 if(!tmpfnt)
 320                                 {
 321                                         tpf= MEM_callocN(sizeof(*tpf), "PackedFile");
 322                                         tpf->data= MEM_mallocN(pf->size, "packFile");
 323                                         tpf->size= pf->size;
 324                                         memcpy(tpf->data, pf->data, pf->size);
 325
 326                                         // Add temporary packed file to globals
 327                                         tmpfnt= (struct TmpFont *) MEM_callocN(sizeof(struct TmpFont), "temp_font");
 328                                         tmpfnt->pf= tpf;
 329                                         tmpfnt->vfont= vfont;
 330                                         BLI_addtail(&ttfdata, tmpfnt);
 331                                 }
 332                         } else {
 333                                 pf= newPackedFile(NULL, vfont->name);
 334
 335                                 if(!tmpfnt)
 336                                 {
 337                                         tpf= newPackedFile(NULL, vfont->name);
 338
 339                                         // Add temporary packed file to globals
 340                                         tmpfnt= (struct TmpFont *) MEM_callocN(sizeof(struct TmpFont), "temp_font");
 341                                         tmpfnt->pf= tpf;
 342                                         tmpfnt->vfont= vfont;
 343                                         BLI_addtail(&ttfdata, tmpfnt);
 344                                 }
 345                         }
 346                         if(!pf) {
 347                                 printf("Font file doesn't exist: %s\n", vfont->name);
 348
 349                                 strcpy(vfont->name, "<builtin>");
 350                                 pf= get_builtin_packedfile();
 351                         }
 352                 }
 353
 354                 if (pf) {
 355                         vfont->data= BLI_vfontdata_from_freetypefont(pf);
 356                         if (pf != vfont->packedfile) {
 357                                 freePackedFile(pf);
 358                         }
 359                 }
 360         }
 361
 362         return vfont->data;
 363 }
 364
 365 VFont *load_vfont(char *name)
 366 {
 367         char filename[FILE_MAXFILE];
 368         VFont *vfont= NULL;
 369         PackedFile *pf;
 370         PackedFile *tpf = NULL;
 371         int is_builtin;
 372         struct TmpFont *tmpfnt;
 373
 374         if (BLI_streq(name, "<builtin>")) {
 375                 strcpy(filename, name);
 376
 377                 pf= get_builtin_packedfile();
 378                 is_builtin= 1;
 379         } else {
 380                 char dir[FILE_MAXDIR];
 381
 382                 strcpy(dir, name);
 383                 BLI_splitdirstring(dir, filename);
 384
 385                 pf= newPackedFile(NULL, name);
 386                 tpf= newPackedFile(NULL, name);
 387
 388                 is_builtin= 0;
 389         }
 390
 391         if (pf) {
 392                 VFontData *vfd;
 393
 394                 vfd= BLI_vfontdata_from_freetypefont(pf);
 395                 if (vfd) {
 396                         vfont = alloc_libblock(&G.main->vfont, ID_VF, filename);
 397                         vfont->data = vfd;
 398
 399                         /* if there's a font name, use it for the ID name */
 400                         if (strcmp(vfd->name, "")!=0) {
 401                                 BLI_strncpy(vfont->id.name+2, vfd->name, 21);
 402                         }
 403                         BLI_strncpy(vfont->name, name, sizeof(vfont->name));
 404
 405                         // if autopack is on store the packedfile in de font structure
 406                         if (!is_builtin && (G.fileflags & G_AUTOPACK)) {
 407                                 vfont->packedfile = pf;
 408                         }
 409
 410                         // Do not add <builtin> to temporary listbase
 411                         if(strcmp(filename, "<builtin>"))
 412                         {
 413                                 tmpfnt= (struct TmpFont *) MEM_callocN(sizeof(struct TmpFont), "temp_font");
 414                                 tmpfnt->pf= tpf;
 415                                 tmpfnt->vfont= vfont;
 416                                 BLI_addtail(&ttfdata, tmpfnt);
 417                         }
 418                 }
 419
 420                 // Free the packed file
 421                 if (!vfont || vfont->packedfile != pf) {
 422                         freePackedFile(pf);
 423                 }
 424
 425                 //XXX waitcursor(0);
 426         }
 427
 428         return vfont;
 429 }
 430
 431 static VFont *which_vfont(Curve *cu, CharInfo *info)
 432 {
 433         switch(info->flag & CU_STYLE) {
 434                 case CU_BOLD:
 435                         if (cu->vfontb) return(cu->vfontb); else return(cu->vfont);
 436                 case CU_ITALIC:
 437                         if (cu->vfonti) return(cu->vfonti); else return(cu->vfont);
 438                 case (CU_BOLD|CU_ITALIC):
 439                         if (cu->vfontbi) return(cu->vfontbi); else return(cu->vfont);
 440                 default:
 441                         return(cu->vfont);
 442         }
 443 }
 444
 445 VFont *get_builtin_font(void)
 446 {
 447         VFont *vf;
 448
 449         for (vf= G.main->vfont.first; vf; vf= vf->id.next)
 450                 if (BLI_streq(vf->name, "<builtin>"))
 451                         return vf;
 452
 453         return load_vfont("<builtin>");
 454 }
 455
 456 static void build_underline(Curve *cu, float x1, float y1, float x2, float y2, int charidx, short mat_nr)
 457 {
 458         Nurb *nu2;
 459         BPoint *bp;
 460
 461         nu2 =(Nurb*) MEM_callocN(sizeof(Nurb),"underline_nurb");
 462         if (nu2 == NULL) return;
 463         nu2->resolu= cu->resolu;
 464         nu2->bezt = NULL;
 465         nu2->knotsu = nu2->knotsv = NULL;
 466         nu2->flag= CU_2D;
 467         nu2->charidx = charidx+1000;
 468         if (mat_nr > 0) nu2->mat_nr= mat_nr-1;
 469         nu2->pntsu = 4;
 470         nu2->pntsv = 1;
 471         nu2->orderu = 4;
 472         nu2->orderv = 1;
 473         nu2->flagu = CU_NURB_CYCLIC;
 474
 475         bp = (BPoint*)MEM_callocN(4 * sizeof(BPoint),"underline_bp");
 476         if (bp == 0){
 477                 MEM_freeN(nu2);
 478                 return;
 479         }
 480         nu2->bp = bp;
 481
 482         nu2->bp[0].vec[0] = x1;
 483         nu2->bp[0].vec[1] = y1;
 484         nu2->bp[0].vec[2] = 0;
 485         nu2->bp[0].vec[3] = 1.0;
 486         nu2->bp[1].vec[0] = x2;
 487         nu2->bp[1].vec[1] = y1;
 488         nu2->bp[1].vec[2] = 0;
 489         nu2->bp[1].vec[3] = 1.0;
 490         nu2->bp[2].vec[0] = x2;
 491         nu2->bp[2].vec[1] = y2;
 492         nu2->bp[2].vec[2] = 0;
 493         nu2->bp[2].vec[3] = 1.0;
 494         nu2->bp[3].vec[0] = x1;
 495         nu2->bp[3].vec[1] = y2;
 496         nu2->bp[3].vec[2] = 0;
 497         nu2->bp[3].vec[3] = 1.0;
 498
 499         BLI_addtail(&(cu->nurb), nu2);
 500
 501 }
 502
 503 static void buildchar(Curve *cu, unsigned long character, CharInfo *info, float ofsx, float ofsy, float rot, int charidx)
 504 {
 505         BezTriple *bezt1, *bezt2;
 506         Nurb *nu1 = NULL, *nu2 = NULL;
 507         float *fp, fsize, shear, x, si, co;
 508         VFontData *vfd = NULL;
 509         VChar *che = NULL;
 510         int i, sel=0;
 511
 512         vfd= vfont_get_data(which_vfont(cu, info));
 513         if (!vfd) return;
 514
 515         if (cu->selend < cu->selstart) {
 516                 if ((charidx >= (cu->selend)) && (charidx <= (cu->selstart-2)))
 517                         sel= 1;
 518         }
 519         else {
 520                 if ((charidx >= (cu->selstart-1)) && (charidx <= (cu->selend-1)))
 521                         sel= 1;
 522         }
 523
 524         /* make a copy at distance ofsx,ofsy with shear*/
 525         fsize= cu->fsize;
 526         shear= cu->shear;
 527         si= (float)sin(rot);
 528         co= (float)cos(rot);
 529
 530         // Find the correct character from the font
 531         che = vfd->characters.first;
 532         while(che)
 533         {
 534                 if(che->index == character)
 535                         break;
 536                 che = che->next;
 537         }
 538
 539         // Select the glyph data
 540         if(che)
 541                 nu1 = che->nurbsbase.first;
 542
 543         // Create the character
 544         while(nu1)
 545         {
 546                 bezt1 = nu1->bezt;
 547                 if (bezt1){
 548                         nu2 =(Nurb*) MEM_mallocN(sizeof(Nurb),"duplichar_nurb");
 549                         if (nu2 == 0) break;
 550                         memcpy(nu2, nu1, sizeof(struct Nurb));
 551                         nu2->resolu= cu->resolu;
 552                         nu2->bp = 0;
 553                         nu2->knotsu = nu2->knotsv = NULL;
 554                         nu2->flag= CU_SMOOTH;
 555                         nu2->charidx = charidx;
 556                         if (info->mat_nr) {
 557                                 nu2->mat_nr= info->mat_nr-1;
 558                         }
 559                         else {
 560                                 nu2->mat_nr= 0;
 561                         }
 562                         /* nu2->trim.first = 0; */
 563                         /* nu2->trim.last = 0; */
 564                         i = nu2->pntsu;
 565
 566                         bezt2 = (BezTriple*)MEM_mallocN(i * sizeof(BezTriple),"duplichar_bezt2");
 567                         if (bezt2 == 0){
 568                                 MEM_freeN(nu2);
 569                                 break;
 570                         }
 571                         memcpy(bezt2, bezt1, i * sizeof(struct BezTriple));
 572                         nu2->bezt = bezt2;
 573
 574                         if (shear != 0.0) {
 575                                 bezt2 = nu2->bezt;
 576
 577                                 for (i= nu2->pntsu; i > 0; i--) {
 578                                         bezt2->vec[0][0] += shear * bezt2->vec[0][1];
 579                                         bezt2->vec[1][0] += shear * bezt2->vec[1][1];
 580                                         bezt2->vec[2][0] += shear * bezt2->vec[2][1];
 581                                         bezt2++;
 582                                 }
 583                         }
 584                         if(rot!=0.0) {
 585                                 bezt2= nu2->bezt;
 586                                 for (i=nu2->pntsu; i > 0; i--) {
 587                                         fp= bezt2->vec[0];
 588
 589                                         x= fp[0];
 590                                         fp[0]= co*x + si*fp[1];
 591                                         fp[1]= -si*x + co*fp[1];
 592                                         x= fp[3];
 593                                         fp[3]= co*x + si*fp[4];
 594                                         fp[4]= -si*x + co*fp[4];
 595                                         x= fp[6];
 596                                         fp[6]= co*x + si*fp[7];
 597                                         fp[7]= -si*x + co*fp[7];
 598
 599                                         bezt2++;
 600                                 }
 601                         }
 602                         bezt2 = nu2->bezt;
 603
 604                         for (i= nu2->pntsu; i > 0; i--) {
 605                                 fp= bezt2->vec[0];
 606
 607                                 fp[0]= (fp[0]+ofsx)*fsize;
 608                                 fp[1]= (fp[1]+ofsy)*fsize;
 609                                 fp[3]= (fp[3]+ofsx)*fsize;
 610                                 fp[4]= (fp[4]+ofsy)*fsize;
 611                                 fp[6]= (fp[6]+ofsx)*fsize;
 612                                 fp[7]= (fp[7]+ofsy)*fsize;
 613                                 bezt2++;
 614                         }
 615
 616                         BLI_addtail(&(cu->nurb), nu2);
 617                 }
 618
 619                 nu1 = nu1->next;
 620         }
 621 }
 622
 623 int BKE_font_getselection(Object *ob, int *start, int *end)
 624 {
 625         Curve *cu= ob->data;
 626
 627         if (cu->editfont==NULL || ob->type != OB_FONT) return 0;
 628
 629         if (cu->selstart == 0) return 0;
 630         if (cu->selstart <= cu->selend) {
 631                 *start = cu->selstart-1;
 632                 *end = cu->selend-1;
 633                 return 1;
 634         }
 635         else {
 636                 *start = cu->selend;
 637                 *end = cu->selstart-2;
 638                 return -1;
 639         }
 640 }
 641
 642 struct chartrans *BKE_text_to_curve(Scene *scene, Object *ob, int mode)
 643 {
 644         VFont *vfont, *oldvfont;
 645         VFontData *vfd= NULL;
 646         Curve *cu;
 647         CharInfo *info, *custrinfo;
 648         TextBox *tb;
 649         VChar *che;
 650         struct chartrans *chartransdata=NULL, *ct;
 651         float *f, xof, yof, xtrax, linedist, *linedata, *linedata2, *linedata3, *linedata4;
 652         float twidth, maxlen= 0;
 653         int i, slen, j;
 654         int curbox;
 655         int selstart, selend;
 656         int utf8len;
 657         short cnr=0, lnr=0, wsnr= 0;
 658         wchar_t *mem, *tmp, ascii;
 659
 660         /* renark: do calculations including the trailing '\0' of a string
 661            because the cursor can be at that location */
 662
 663         if(ob->type!=OB_FONT) return 0;
 664
 665         // Set font data
 666         cu= (Curve *) ob->data;
 667         vfont= cu->vfont;
 668
 669         if(cu->str == NULL) return 0;
 670         if(vfont == NULL) return 0;
 671
 672         // Create unicode string
 673         utf8len = utf8slen(cu->str);
 674         tmp = mem = MEM_callocN(((utf8len + 1) * sizeof(wchar_t)), "convertedmem");
 675
 676         utf8towchar(mem, cu->str);
 677
 678         // Count the wchar_t string length
 679         slen = wcslen(mem);
 680
 681         if (cu->ulheight == 0.0)
 682                 cu->ulheight = 0.05;
 683
 684         if (cu->strinfo==NULL)  /* old file */
 685                 cu->strinfo = MEM_callocN((slen+4) * sizeof(CharInfo), "strinfo compat");
 686
 687         custrinfo= cu->strinfo;
 688         if (cu->editfont)
 689                 custrinfo= cu->editfont->textbufinfo;
 690
 691         if (cu->tb==NULL)
 692                 cu->tb= MEM_callocN(MAXTEXTBOX*sizeof(TextBox), "TextBox compat");
 693
 694         vfd= vfont_get_data(vfont);
 695
 696         /* The VFont Data can not be found */
 697         if(!vfd) {
 698                 if(mem)
 699                         MEM_freeN(mem);
 700                 return 0;
 701         }
 702
 703         /* calc offset and rotation of each char */
 704         ct = chartransdata =
 705                 (struct chartrans*)MEM_callocN((slen+1)* sizeof(struct chartrans),"buildtext");
 706
 707         /* We assume the worst case: 1 character per line (is freed at end anyway) */
 708
 709         linedata= MEM_mallocN(sizeof(float)*(slen*2 + 1),"buildtext2");
 710         linedata2= MEM_mallocN(sizeof(float)*(slen*2 + 1),"buildtext3");
 711         linedata3= MEM_callocN(sizeof(float)*(slen*2 + 1),"buildtext4");
 712         linedata4= MEM_callocN(sizeof(float)*(slen*2 + 1),"buildtext5");
 713
 714         linedist= cu->linedist;
 715
 716         xof= cu->xof + (cu->tb[0].x/cu->fsize);
 717         yof= cu->yof + (cu->tb[0].y/cu->fsize);
 718
 719         xtrax= 0.5f*cu->spacing-0.5f;
 720
 721         oldvfont = NULL;
 722
 723         for (i=0; i<slen; i++) custrinfo[i].flag &= ~CU_WRAP;
 724
 725         if (cu->selboxes) MEM_freeN(cu->selboxes);
 726         cu->selboxes = NULL;
 727         if (BKE_font_getselection(ob, &selstart, &selend))
 728                 cu->selboxes = MEM_callocN((selend-selstart+1)*sizeof(SelBox), "font selboxes");
 729
 730         tb = &(cu->tb[0]);
 731         curbox= 0;
 732         for (i = 0 ; i<=slen ; i++) {
 733         makebreak:
 734                 // Characters in the list
 735                 che = vfd->characters.first;
 736                 ascii = mem[i];
 737                 info = &(custrinfo[i]);
 738                 vfont = which_vfont(cu, info);
 739
 740                 if(vfont==NULL) break;
 741
 742                 // Find the character
 743                 while(che) {
 744                         if(che->index == ascii)
 745                                 break;
 746                         che = che->next;
 747                 }
 748
 749                 /*
 750                  * The character wasn't in the current curve base so load it
 751                  * But if the font is <builtin> then do not try loading since
 752                  * whole font is in the memory already
 753                  */
 754                 if(che == NULL && strcmp(vfont->name, "<builtin>"))     {
 755                         BLI_vfontchar_from_freetypefont(vfont, ascii);
 756                 }
 757
 758                 /* Try getting the character again from the list */
 759                 che = vfd->characters.first;
 760                 while(che) {
 761                         if(che->index == ascii)
 762                                 break;
 763                         che = che->next;
 764                 }
 765
 766                 /* No VFont found */
 767                 if (vfont==0) {
 768                         if(mem)
 769                                 MEM_freeN(mem);
 770                         MEM_freeN(chartransdata);
 771                         return 0;
 772                 }
 773
 774                 if (vfont != oldvfont) {
 775                         vfd= vfont_get_data(vfont);
 776                         oldvfont = vfont;
 777                 }
 778
 779                 /* VFont Data for VFont couldn't be found */
 780                 if (!vfd) {
 781                         if(mem)
 782                                 MEM_freeN(mem);
 783                         MEM_freeN(chartransdata);
 784                         return 0;
 785                 }
 786
 787                 // The character wasn't found, propably ascii = 0, then the width shall be 0 as well
 788                 if(!che)
 789                         twidth = 0;
 790                 else
 791                         twidth = che->width;
 792
 793                 // Calculate positions
 794                 if((tb->w != 0.0) && (ct->dobreak==0) && ((xof-(tb->x/cu->fsize)+twidth)*cu->fsize) > tb->w) {
 795         //              fprintf(stderr, "linewidth exceeded: %c%c%c...\n", mem[i], mem[i+1], mem[i+2]);
 796                         for (j=i; j && (mem[j] != '\n') && (mem[j] != '\r') && (chartransdata[j].dobreak==0); j--) {
 797                                 if (mem[j]==' ' || mem[j]=='-') {
 798                                         ct -= (i-(j-1));
 799                                         cnr -= (i-(j-1));
 800                                         if (mem[j] == ' ') wsnr--;
 801                                         if (mem[j] == '-') wsnr++;
 802                                         i = j-1;
 803                                         xof = ct->xof;
 804                                         ct[1].dobreak = 1;
 805                                         custrinfo[i+1].flag |= CU_WRAP;
 806                                         goto makebreak;
 807                                 }
 808                                 if (chartransdata[j].dobreak) {
 809         //                              fprintf(stderr, "word too long: %c%c%c...\n", mem[j], mem[j+1], mem[j+2]);
 810                                         ct->dobreak= 1;
 811                                         custrinfo[i+1].flag |= CU_WRAP;
 812                                         ct -= 1;
 813                                         cnr -= 1;
 814                                         i--;
 815                                         xof = ct->xof;
 816                                         goto makebreak;
 817                                 }
 818                         }
 819                 }
 820                 if(ascii== '\n' || ascii== '\r' || ascii==0 || ct->dobreak) {
 821                         ct->xof= xof;
 822                         ct->yof= yof;
 823                         ct->linenr= lnr;
 824                         ct->charnr= cnr;
 825
 826                         yof-= linedist;
 827
 828                         maxlen= MAX2(maxlen, (xof-tb->x/cu->fsize));
 829                         linedata[lnr]= xof-tb->x/cu->fsize;
 830                         linedata2[lnr]= cnr;
 831                         linedata3[lnr]= tb->w/cu->fsize;
 832                         linedata4[lnr]= wsnr;
 833
 834                         if ( (tb->h != 0.0) &&
 835                              ((-(yof-(tb->y/cu->fsize))) > ((tb->h/cu->fsize)-(linedist*cu->fsize))) &&
 836                              (cu->totbox > (curbox+1)) ) {
 837                                 maxlen= 0;
 838                                 tb++;
 839                                 curbox++;
 840                                 yof= cu->yof + tb->y/cu->fsize;
 841                         }
 842
 843                         if(ascii == '\n' || ascii == '\r')
 844                                 xof = cu->xof;
 845                         else
 846                                 xof= cu->xof + (tb->x/cu->fsize);
 847
 848                         xof= cu->xof + (tb->x/cu->fsize);
 849                         lnr++;
 850                         cnr= 0;
 851                         wsnr= 0;
 852                 }
 853                 else if(ascii==9) {     /* TAB */
 854                         float tabfac;
 855
 856                         ct->xof= xof;
 857                         ct->yof= yof;
 858                         ct->linenr= lnr;
 859                         ct->charnr= cnr++;
 860
 861                         tabfac= (xof-cu->xof+0.01f);
 862                         tabfac= (float)(2.0*ceil(tabfac/2.0));
 863                         xof= cu->xof+tabfac;
 864                 }
 865                 else {
 866                         SelBox *sb= NULL;
 867                         float wsfac;
 868
 869                         ct->xof= xof;
 870                         ct->yof= yof;
 871                         ct->linenr= lnr;
 872                         ct->charnr= cnr++;
 873
 874                         if (cu->selboxes && (i>=selstart) && (i<=selend)) {
 875                                 sb = &(cu->selboxes[i-selstart]);
 876                                 sb->y = yof*cu->fsize-linedist*cu->fsize*0.1;
 877                                 sb->h = linedist*cu->fsize;
 878                                 sb->w = xof*cu->fsize;
 879                         }
 880
 881                         if (ascii==32) {
 882                                 wsfac = cu->wordspace;
 883                                 wsnr++;
 884                         }
 885                         else wsfac = 1.0;
 886
 887                         // Set the width of the character
 888                         if(!che)
 889                                 twidth = 0;
 890                         else
 891                                 twidth = che->width;
 892
 893                         xof += (twidth*wsfac*(1.0+(info->kern/40.0)) ) + xtrax;
 894
 895                         if (sb)
 896                                 sb->w = (xof*cu->fsize) - sb->w;
 897                 }
 898                 ct++;
 899         }
 900
 901         cu->lines= 1;
 902         ct= chartransdata;
 903         tmp = mem;
 904         for (i= 0; i<=slen; i++, tmp++, ct++) {
 905                 ascii = *tmp;
 906                 if(ascii== '\n' || ascii== '\r' || ct->dobreak) cu->lines++;
 907         }
 908
 909         // linedata is now: width of line
 910         // linedata2 is now: number of characters
 911         // linedata3 is now: maxlen of that line
 912         // linedata4 is now: number of whitespaces of line
 913
 914         if(cu->spacemode!=CU_LEFT) {
 915                 ct= chartransdata;
 916
 917                 if(cu->spacemode==CU_RIGHT) {
 918                         for(i=0;i<lnr;i++) linedata[i]= linedata3[i]-linedata[i];
 919                         for (i=0; i<=slen; i++) {
 920                                 ct->xof+= linedata[ct->linenr];
 921                                 ct++;
 922                         }
 923                 } else if(cu->spacemode==CU_MIDDLE) {
 924                         for(i=0;i<lnr;i++) linedata[i]= (linedata3[i]-linedata[i])/2;
 925                         for (i=0; i<=slen; i++) {
 926                                 ct->xof+= linedata[ct->linenr];
 927                                 ct++;
 928                         }
 929                 } else if((cu->spacemode==CU_FLUSH) &&
 930                           (cu->tb[0].w != 0.0)) {
 931                         for(i=0;i<lnr;i++)
 932                                 if(linedata2[i]>1)
 933                                         linedata[i]= (linedata3[i]-linedata[i])/(linedata2[i]-1);
 934                         for (i=0; i<=slen; i++) {
 935                                 for (j=i; (mem[j]) && (mem[j]!='\n') &&
 936                                           (mem[j]!='\r') && (chartransdata[j].dobreak==0) && (j<slen); j++);
 937 //                              if ((mem[j]!='\r') && (mem[j]!='\n') && (mem[j])) {
 938                                         ct->xof+= ct->charnr*linedata[ct->linenr];
 939 //                              }
 940                                 ct++;
 941                         }
 942                 }
 943                 else if((cu->spacemode==CU_JUSTIFY) && (cu->tb[0].w != 0.0)) {
 944                         float curofs= 0.0f;
 945                         for (i=0; i<=slen; i++) {
 946                                 for (j=i; (mem[j]) && (mem[j]!='\n') &&
 947                                           (mem[j]!='\r') && (chartransdata[j].dobreak==0) && (j<slen); j++);
 948                                 if ((mem[j]!='\r') && (mem[j]!='\n') &&
 949                                     ((chartransdata[j].dobreak!=0))) {
 950                                     if (mem[i]==' ') curofs += (linedata3[ct->linenr]-linedata[ct->linenr])/linedata4[ct->linenr];
 951                                         ct->xof+= curofs;
 952                                 }
 953                                 if (mem[i]=='\n' || mem[i]=='\r' || chartransdata[i].dobreak) curofs= 0;
 954                                 ct++;
 955                         }
 956                 }
 957         }
 958
 959         /* TEXT ON CURVE */
 960         /* Note: Only OB_CURVE objects could have a path  */
 961         if(cu->textoncurve && cu->textoncurve->type==OB_CURVE) {
 962                 Curve *cucu= cu->textoncurve->data;
 963                 int oldflag= cucu->flag;
 964
 965                 cucu->flag |= (CU_PATH+CU_FOLLOW);
 966
 967                 if(cucu->path==NULL) makeDispListCurveTypes(scene, cu->textoncurve, 0);
 968                 if(cucu->path) {
 969                         float distfac, imat[4][4], imat3[3][3], cmat[3][3];
 970                         float minx, maxx, miny, maxy;
 971                         float timeofs, sizefac;
 972
 973                         invert_m4_m4(imat, ob->obmat);
 974                         copy_m3_m4(imat3, imat);
 975
 976                         copy_m3_m4(cmat, cu->textoncurve->obmat);
 977                         mul_m3_m3m3(cmat, cmat, imat3);
 978                         sizefac= normalize_v3(cmat[0])/cu->fsize;
 979
 980                         minx=miny= 1.0e20f;
 981                         maxx=maxy= -1.0e20f;
 982                         ct= chartransdata;
 983                         for (i=0; i<=slen; i++, ct++) {
 984                                 if(minx>ct->xof) minx= ct->xof;
 985                                 if(maxx<ct->xof) maxx= ct->xof;
 986                                 if(miny>ct->yof) miny= ct->yof;
 987                                 if(maxy<ct->yof) maxy= ct->yof;
 988                         }
 989
 990                         /* we put the x-coordinaat exact at the curve, the y is rotated */
 991
 992                         /* length correction */
 993                         distfac= sizefac*cucu->path->totdist/(maxx-minx);
 994                         timeofs= 0.0;
 995
 996                         if(distfac > 1.0) {
 997                                 /* path longer than text: spacemode involves */
 998                                 distfac= 1.0f/distfac;
 999
1000                                 if(cu->spacemode==CU_RIGHT) {
1001                                         timeofs= 1.0f-distfac;
1002                                 }
1003                                 else if(cu->spacemode==CU_MIDDLE) {
1004                                         timeofs= (1.0f-distfac)/2.0f;
1005                                 }
1006                                 else if(cu->spacemode==CU_FLUSH) distfac= 1.0f;
1007
1008                         }
1009                         else distfac= 1.0;
1010
1011                         distfac/= (maxx-minx);
1012
1013                         timeofs+= distfac*cu->xof;      /* not cyclic */
1014
1015                         ct= chartransdata;
1016                         for (i=0; i<=slen; i++, ct++) {
1017                                 float ctime, dtime, vec[4], tvec[4], rotvec[3];
1018                                 float si, co;
1019
1020                                 /* rotate around center character */
1021                                 ascii = mem[i];
1022
1023                                 // Find the character
1024                                 che = vfd->characters.first;
1025                                 while(che) {
1026                                         if(che->index == ascii)
1027                                                 break;
1028                                         che = che->next;
1029                                 }
1030
1031                                 if(che)
1032                                         twidth = che->width;
1033                                 else
1034                                         twidth = 0;
1035
1036                                 dtime= distfac*0.35f*twidth;    /* why not 0.5? */
1037                                 dtime= distfac*0.5f*twidth;     /* why not 0.5? */
1038
1039                                 ctime= timeofs + distfac*( ct->xof - minx);
1040                                 CLAMP(ctime, 0.0, 1.0);
1041
1042                                 /* calc the right loc AND the right rot separately */
1043                                 /* vec, tvec need 4 items */
1044                                 where_on_path(cu->textoncurve, ctime, vec, tvec, NULL, NULL);
1045                                 where_on_path(cu->textoncurve, ctime+dtime, tvec, rotvec, NULL, NULL);
1046
1047                                 mul_v3_fl(vec, sizefac);
1048
1049                                 ct->rot= (float)(M_PI-atan2(rotvec[1], rotvec[0]));
1050
1051                                 si= (float)sin(ct->rot);
1052                                 co= (float)cos(ct->rot);
1053
1054                                 yof= ct->yof;
1055
1056                                 ct->xof= vec[0] + si*yof;
1057                                 ct->yof= vec[1] + co*yof;
1058
1059                         }
1060                         cucu->flag= oldflag;
1061                 }
1062         }
1063
1064         if (cu->selboxes) {
1065                 ct= chartransdata;
1066                 for (i=0; i<=selend; i++, ct++) {
1067                         if (i>=selstart) {
1068                                 cu->selboxes[i-selstart].x = ct->xof*cu->fsize;
1069                                 cu->selboxes[i-selstart].y = ct->yof*cu->fsize;
1070                         }
1071                 }
1072         }
1073
1074         if(mode==FO_CURSUP || mode==FO_CURSDOWN || mode==FO_PAGEUP || mode==FO_PAGEDOWN) {
1075                 /* 2: curs up
1076                    3: curs down */
1077                 ct= chartransdata+cu->pos;
1078
1079                 if((mode==FO_CURSUP || mode==FO_PAGEUP) && ct->linenr==0);
1080                 else if((mode==FO_CURSDOWN || mode==FO_PAGEDOWN) && ct->linenr==lnr);
1081                 else {
1082                         switch(mode) {
1083                                 case FO_CURSUP:         lnr= ct->linenr-1; break;
1084                                 case FO_CURSDOWN:       lnr= ct->linenr+1; break;
1085                                 case FO_PAGEUP:         lnr= ct->linenr-10; break;
1086                                 case FO_PAGEDOWN:       lnr= ct->linenr+10; break;
1087                         }
1088                         cnr= ct->charnr;
1089                         /* seek for char with lnr en cnr */
1090                         cu->pos= 0;
1091                         ct= chartransdata;
1092                         for (i= 0; i<slen; i++) {
1093                                 if(ct->linenr==lnr) {
1094                                         if(ct->charnr==cnr) break;
1095                                         if( (ct+1)->charnr==0) break;
1096                                 }
1097                                 else if(ct->linenr>lnr) break;
1098                                 cu->pos++;
1099                                 ct++;
1100                         }
1101                 }
1102         }
1103
1104         /* cursor first */
1105         if(cu->editfont) {
1106                 float si, co;
1107
1108                 ct= chartransdata+cu->pos;
1109                 si= (float)sin(ct->rot);
1110                 co= (float)cos(ct->rot);
1111
1112                 f= cu->editfont->textcurs[0];
1113
1114                 f[0]= cu->fsize*(-0.1f*co + ct->xof);
1115                 f[1]= cu->fsize*(0.1f*si + ct->yof);
1116
1117                 f[2]= cu->fsize*(0.1f*co + ct->xof);
1118                 f[3]= cu->fsize*(-0.1f*si + ct->yof);
1119
1120                 f[4]= cu->fsize*( 0.1f*co + 0.8f*si + ct->xof);
1121                 f[5]= cu->fsize*(-0.1f*si + 0.8f*co + ct->yof);
1122
1123                 f[6]= cu->fsize*(-0.1f*co + 0.8f*si + ct->xof);
1124                 f[7]= cu->fsize*( 0.1f*si + 0.8f*co + ct->yof);
1125
1126         }
1127
1128         MEM_freeN(linedata);
1129         MEM_freeN(linedata2);
1130         MEM_freeN(linedata3);
1131         MEM_freeN(linedata4);
1132
1133         if (mode == FO_SELCHANGE) {
1134                 MEM_freeN(chartransdata);
1135                 MEM_freeN(mem);
1136                 return NULL;
1137         }
1138
1139         if(mode==0) {
1140                 /* make nurbdata */
1141                 unsigned long cha;
1142
1143                 freeNurblist(&cu->nurb);
1144
1145                 ct= chartransdata;
1146                 if (cu->sepchar==0) {
1147                         for (i= 0; i<slen; i++) {
1148                                 cha = (uintptr_t) mem[i];
1149                                 info = &(custrinfo[i]);
1150                                 if (info->mat_nr > (ob->totcol)) {
1151                                         /* printf("Error: Illegal material index (%d) in text object, setting to 0\n", info->mat_nr); */
1152                                         info->mat_nr = 0;
1153                                 }
1154                                 // We do not want to see any character for \n or \r
1155                                 if(cha != '\n' && cha != '\r')
1156                                         buildchar(cu, cha, info, ct->xof, ct->yof, ct->rot, i);
1157
1158                                 if ((info->flag & CU_UNDERLINE) && (cu->textoncurve == NULL) && (cha != '\n') && (cha != '\r')) {
1159                                         float ulwidth, uloverlap= 0.0f;
1160
1161                                         if ( (i<(slen-1)) && (mem[i+1] != '\n') && (mem[i+1] != '\r') &&
1162                                                  ((mem[i+1] != ' ') || (custrinfo[i+1].flag & CU_UNDERLINE)) && ((custrinfo[i+1].flag & CU_WRAP)==0)
1163                                                  ) {
1164                                                 uloverlap = xtrax + 0.1;
1165                                         }
1166                                         // Find the character, the characters has to be in the memory already
1167                                         // since character checking has been done earlier already.
1168                                         che = vfd->characters.first;
1169                                         while(che) {
1170                                                 if(che->index == cha)
1171                                                         break;
1172                                                 che = che->next;
1173                                         }
1174
1175                                         if(!che) twidth =0; else twidth=che->width;
1176                                         ulwidth = cu->fsize * ((twidth* (1.0+(info->kern/40.0)))+uloverlap);
1177                                         build_underline(cu, ct->xof*cu->fsize, ct->yof*cu->fsize + (cu->ulpos-0.05)*cu->fsize,
1178                                                                         ct->xof*cu->fsize + ulwidth,
1179                                                                         ct->yof*cu->fsize + (cu->ulpos-0.05)*cu->fsize - cu->ulheight*cu->fsize,
1180                                                                         i, info->mat_nr);
1181                                 }
1182                                 ct++;
1183                         }
1184                 }
1185                 else {
1186                         int outta = 0;
1187                         for (i= 0; (i<slen) && (outta==0); i++) {
1188                                 ascii = mem[i];
1189                                 info = &(custrinfo[i]);
1190                                 if (cu->sepchar == (i+1)) {
1191                                         float vecyo[3];
1192
1193                                         mem[0] = ascii;
1194                                         mem[1] = 0;
1195                                         custrinfo[0]= *info;
1196                                         cu->pos = 1;
1197                                         cu->len = 1;
1198                                         vecyo[0] = ct->xof;
1199                                         vecyo[1] = ct->yof;
1200                                         vecyo[2] = 0;
1201                                         mul_m4_v3(ob->obmat, vecyo);
1202                                         VECCOPY(ob->loc, vecyo);
1203                                         outta = 1;
1204                                         cu->sepchar = 0;
1205                                 }
1206                                 ct++;
1207                         }
1208                 }
1209         }
1210
1211         if(mode==FO_DUPLI) {
1212                 MEM_freeN(mem);
1213                 return chartransdata;
1214         }
1215
1216         if(mem)
1217                 MEM_freeN(mem);
1218
1219         MEM_freeN(chartransdata);
1220         return 0;
1221 }
1222
1223