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 /** \file blender/blenkernel/intern/font.c
  33  *  \ingroup bke
  34  */
  35
  36
  37 #include <stdio.h>
  38 #include <string.h>
  39 #include <math.h>
  40 #include <stdlib.h>
  41 #include <wchar.h>
  42 #include <wctype.h>
  43
  44 #include "MEM_guardedalloc.h"
  45
  46 #include "BLI_math.h"
  47 #include "BLI_blenlib.h"
  48 #include "BLI_vfontdata.h"
  49 #include "BLI_utildefines.h"
  50
  51 #include "DNA_packedFile_types.h"
  52 #include "DNA_curve_types.h"
  53 #include "DNA_vfont_types.h"
  54 #include "DNA_scene_types.h"
  55 #include "DNA_object_types.h"
  56
  57 #include "BKE_utildefines.h"
  58 #include "BKE_packedFile.h"
  59 #include "BKE_library.h"
  60 #include "BKE_font.h"
  61 #include "BKE_global.h"
  62 #include "BKE_main.h"
  63 #include "BKE_anim.h"
  64 #include "BKE_curve.h"
  65 #include "BKE_displist.h"
  66
  67 static ListBase ttfdata= {NULL, NULL};
  68
  69 /* UTF-8 <-> wchar transformations */
  70 size_t chtoutf8(const unsigned long c, char o[4])
  71 {
  72         // Variables and initialization
  73 /*      memset(o, 0, 4);        */
  74
  75         // Create the utf-8 string
  76         if (c < 0x80) {
  77                 o[0] = (char) c;
  78                 return 1;
  79         }
  80         else if (c < 0x800) {
  81                 o[0] = (0xC0 | (c>>6));
  82                 o[1] = (0x80 | (c & 0x3f));
  83                 return 2;
  84         }
  85         else if (c < 0x10000) {
  86                 o[0] = (0xe0 | (c >> 12));
  87                 o[1] = (0x80 | (c >>6 & 0x3f));
  88                 o[2] = (0x80 | (c & 0x3f));
  89                 return 3;
  90         }
  91         else if (c < 0x200000) {
  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                 return 4;
  97         }
  98
  99         /* should we assert here? */
 100         return 0;
 101 }
 102
 103 void wcs2utf8s(char *dst, const wchar_t *src)
 104 {
 105         while(*src) {
 106                 dst += chtoutf8(*src++, dst);
 107         }
 108
 109         *dst= '\0';
 110 }
 111
 112 size_t wcsleninu8(wchar_t *src)
 113 {
 114         char ch_dummy[4];
 115         size_t len = 0;
 116
 117         while(*src) {
 118                 len += chtoutf8(*src++, ch_dummy);
 119         }
 120
 121         return len;
 122 }
 123
 124 static size_t utf8slen(const char *strc)
 125 {
 126         int len=0;
 127
 128         while(*strc) {
 129                 if ((*strc & 0xe0) == 0xc0) {
 130                         if((strc[1] & 0x80) && (strc[1] & 0x40) == 0x00)
 131                                 strc++;
 132                 } else if ((*strc & 0xf0) == 0xe0) {
 133                         if((strc[1] & strc[2] & 0x80) && ((strc[1] | strc[2]) & 0x40) == 0x00)
 134                                 strc += 2;
 135                 } else if ((*strc & 0xf8) == 0xf0) {
 136                         if((strc[1] & strc[2] & strc[3] & 0x80) && ((strc[1] | strc[2] | strc[3]) & 0x40) == 0x00)
 137                                 strc += 3;
 138                 }
 139
 140                 strc++;
 141                 len++;
 142         }
 143
 144         return len;
 145 }
 146
 147
 148 /* Converts Unicode to wchar
 149
 150 According to RFC 3629 "UTF-8, a transformation format of ISO 10646"
 151 (http://tools.ietf.org/html/rfc3629), the valid UTF-8 encoding are:
 152
 153   Char. number range  |        UTF-8 octet sequence
 154           (hexadecimal)    |              (binary)
 155    --------------------+---------------------------------------------
 156    0000 0000-0000 007F | 0xxxxxxx
 157    0000 0080-0000 07FF | 110xxxxx 10xxxxxx
 158    0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx
 159    0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
 160
 161 If the encoding incidated by the first character is incorrect (because the
 162 1 to 3 following characters do not match 10xxxxxx), the output is a '?' and
 163 only a single input character is consumed.
 164
 165 */
 166
 167 size_t utf8towchar(wchar_t *w, const char *c)
 168 {
 169         int len=0;
 170
 171         if(w==NULL || c==NULL) return(0);
 172
 173         while(*c) {
 174                 if ((*c & 0xe0) == 0xc0) {
 175                         if((c[1] & 0x80) && (c[1] & 0x40) == 0x00) {
 176                                 *w=((c[0] &0x1f)<<6) | (c[1]&0x3f);
 177                                 c++;
 178                         } else {
 179                                 *w = '?';
 180                         }
 181                 } else if ((*c & 0xf0) == 0xe0) {
 182                         if((c[1] & c[2] & 0x80) && ((c[1] | c[2]) & 0x40) == 0x00) {
 183                                 *w=((c[0] & 0x0f)<<12) | ((c[1]&0x3f)<<6) | (c[2]&0x3f);
 184                                 c += 2;
 185                         } else {
 186                                 *w = '?';
 187                         }
 188                 } else if ((*c & 0xf8) == 0xf0) {
 189                         if((c[1] & c[2] & c[3] & 0x80) && ((c[1] | c[2] | c[3]) & 0x40) == 0x00) {
 190                                 *w=((c[0] & 0x07)<<18) | ((c[1]&0x1f)<<12) | ((c[2]&0x3f)<<6) | (c[3]&0x3f);
 191                                 c += 3;
 192                         } else {
 193                                 *w = '?';
 194                         }
 195                 } else
 196                         *w=(c[0] & 0x7f);
 197
 198                 c++;
 199                 w++;
 200                 len++;
 201         }
 202         return len;
 203 }
 204
 205 /* The vfont code */
 206 void free_vfont(struct VFont *vf)
 207 {
 208         if (vf == NULL) return;
 209
 210         if (vf->data) {
 211                 while(vf->data->characters.first)
 212                 {
 213                         VChar *che = vf->data->characters.first;
 214
 215                         while (che->nurbsbase.first) {
 216                                 Nurb *nu = che->nurbsbase.first;
 217                                 if (nu->bezt) MEM_freeN(nu->bezt);
 218                                 BLI_freelinkN(&che->nurbsbase, nu);
 219                         }
 220
 221                         BLI_freelinkN(&vf->data->characters, che);
 222                 }
 223
 224                 MEM_freeN(vf->data);
 225                 vf->data = NULL;
 226         }
 227
 228         if (vf->packedfile) {
 229                 freePackedFile(vf->packedfile);
 230                 vf->packedfile = NULL;
 231         }
 232 }
 233
 234 static void *builtin_font_data= NULL;
 235 static int builtin_font_size= 0;
 236
 237 void BKE_font_register_builtin(void *mem, int size)
 238 {
 239         builtin_font_data= mem;
 240         builtin_font_size= size;
 241 }
 242
 243 static PackedFile *get_builtin_packedfile(void)
 244 {
 245         if (!builtin_font_data) {
 246                 printf("Internal error, builtin font not loaded\n");
 247
 248                 return NULL;
 249         } else {
 250                 void *mem= MEM_mallocN(builtin_font_size, "vfd_builtin");
 251
 252                 memcpy(mem, builtin_font_data, builtin_font_size);
 253
 254                 return newPackedFileMemory(mem, builtin_font_size);
 255         }
 256 }
 257
 258 void free_ttfont(void)
 259 {
 260         struct TmpFont *tf;
 261
 262         for(tf= ttfdata.first; tf; tf= tf->next) {
 263                 if(tf->pf) freePackedFile(tf->pf); /* NULL when the font file can't be found on disk */
 264                 tf->pf= NULL;
 265                 tf->vfont= NULL;
 266         }
 267         BLI_freelistN(&ttfdata);
 268 }
 269
 270 struct TmpFont *vfont_find_tmpfont(VFont *vfont)
 271 {
 272         struct TmpFont *tmpfnt = NULL;
 273
 274         if(vfont==NULL) return NULL;
 275
 276         // Try finding the font from font list
 277         tmpfnt = ttfdata.first;
 278         while(tmpfnt)
 279         {
 280                 if(tmpfnt->vfont == vfont)
 281                         break;
 282                 tmpfnt = tmpfnt->next;
 283         }
 284         return tmpfnt;
 285 }
 286
 287 static VFontData *vfont_get_data(VFont *vfont)
 288 {
 289         struct TmpFont *tmpfnt = NULL;
 290         PackedFile *tpf;
 291
 292         if(vfont==NULL) return NULL;
 293
 294         // Try finding the font from font list
 295         tmpfnt = vfont_find_tmpfont(vfont);
 296
 297         // And then set the data
 298         if (!vfont->data) {
 299                 PackedFile *pf;
 300
 301                 if (strcmp(vfont->name, FO_BUILTIN_NAME)==0) {
 302                         pf= get_builtin_packedfile();
 303                 } else {
 304                         if (vfont->packedfile) {
 305                                 pf= vfont->packedfile;
 306
 307                                 // We need to copy a tmp font to memory unless it is already there
 308                                 if(!tmpfnt)
 309                                 {
 310                                         tpf= MEM_callocN(sizeof(*tpf), "PackedFile");
 311                                         tpf->data= MEM_mallocN(pf->size, "packFile");
 312                                         tpf->size= pf->size;
 313                                         memcpy(tpf->data, pf->data, pf->size);
 314
 315                                         // Add temporary packed file to globals
 316                                         tmpfnt= (struct TmpFont *) MEM_callocN(sizeof(struct TmpFont), "temp_font");
 317                                         tmpfnt->pf= tpf;
 318                                         tmpfnt->vfont= vfont;
 319                                         BLI_addtail(&ttfdata, tmpfnt);
 320                                 }
 321                         } else {
 322                                 pf= newPackedFile(NULL, vfont->name);
 323
 324                                 if(!tmpfnt)
 325                                 {
 326                                         tpf= newPackedFile(NULL, vfont->name);
 327
 328                                         // Add temporary packed file to globals
 329                                         tmpfnt= (struct TmpFont *) MEM_callocN(sizeof(struct TmpFont), "temp_font");
 330                                         tmpfnt->pf= tpf;
 331                                         tmpfnt->vfont= vfont;
 332                                         BLI_addtail(&ttfdata, tmpfnt);
 333                                 }
 334                         }
 335                         if(!pf) {
 336                                 printf("Font file doesn't exist: %s\n", vfont->name);
 337
 338                                 strcpy(vfont->name, FO_BUILTIN_NAME);
 339                                 pf= get_builtin_packedfile();
 340                         }
 341                 }
 342
 343                 if (pf) {
 344                         vfont->data= BLI_vfontdata_from_freetypefont(pf);
 345                         if (pf != vfont->packedfile) {
 346                                 freePackedFile(pf);
 347                         }
 348                 }
 349         }
 350
 351         return vfont->data;
 352 }
 353
 354 VFont *load_vfont(const char *name)
 355 {
 356         char filename[FILE_MAXFILE];
 357         VFont *vfont= NULL;
 358         PackedFile *pf;
 359         PackedFile *tpf = NULL;
 360         int is_builtin;
 361         struct TmpFont *tmpfnt;
 362
 363         if (strcmp(name, FO_BUILTIN_NAME)==0) {
 364                 BLI_strncpy(filename, name, sizeof(filename));
 365
 366                 pf= get_builtin_packedfile();
 367                 is_builtin= 1;
 368         } else {
 369                 char dir[FILE_MAXDIR];
 370
 371                 BLI_strncpy(dir, name, sizeof(dir));
 372                 BLI_splitdirstring(dir, filename);
 373
 374                 pf= newPackedFile(NULL, name);
 375                 tpf= newPackedFile(NULL, name);
 376
 377                 is_builtin= 0;
 378         }
 379
 380         if (pf) {
 381                 VFontData *vfd;
 382
 383                 vfd= BLI_vfontdata_from_freetypefont(pf);
 384                 if (vfd) {
 385                         vfont = alloc_libblock(&G.main->vfont, ID_VF, filename);
 386                         vfont->data = vfd;
 387
 388                         /* if there's a font name, use it for the ID name */
 389                         if (strcmp(vfd->name, "")!=0) {
 390                                 BLI_strncpy(vfont->id.name+2, vfd->name, sizeof(vfont->id.name)-2);
 391                         }
 392                         BLI_strncpy(vfont->name, name, sizeof(vfont->name));
 393
 394                         // if autopack is on store the packedfile in de font structure
 395                         if (!is_builtin && (G.fileflags & G_AUTOPACK)) {
 396                                 vfont->packedfile = pf;
 397                         }
 398
 399                         // Do not add FO_BUILTIN_NAME to temporary listbase
 400                         if(strcmp(filename, FO_BUILTIN_NAME))
 401                         {
 402                                 tmpfnt= (struct TmpFont *) MEM_callocN(sizeof(struct TmpFont), "temp_font");
 403                                 tmpfnt->pf= tpf;
 404                                 tmpfnt->vfont= vfont;
 405                                 BLI_addtail(&ttfdata, tmpfnt);
 406                         }
 407                 }
 408
 409                 // Free the packed file
 410                 if (!vfont || vfont->packedfile != pf) {
 411                         freePackedFile(pf);
 412                 }
 413
 414                 //XXX waitcursor(0);
 415         }
 416
 417         return vfont;
 418 }
 419
 420 static VFont *which_vfont(Curve *cu, CharInfo *info)
 421 {
 422         switch(info->flag & (CU_CHINFO_BOLD|CU_CHINFO_ITALIC)) {
 423                 case CU_CHINFO_BOLD:
 424                         if (cu->vfontb) return(cu->vfontb); else return(cu->vfont);
 425                 case CU_CHINFO_ITALIC:
 426                         if (cu->vfonti) return(cu->vfonti); else return(cu->vfont);
 427                 case (CU_CHINFO_BOLD|CU_CHINFO_ITALIC):
 428                         if (cu->vfontbi) return(cu->vfontbi); else return(cu->vfont);
 429                 default:
 430                         return(cu->vfont);
 431         }
 432 }
 433
 434 VFont *get_builtin_font(void)
 435 {
 436         VFont *vf;
 437
 438         for (vf= G.main->vfont.first; vf; vf= vf->id.next)
 439                 if (strcmp(vf->name, FO_BUILTIN_NAME)==0)
 440                         return vf;
 441
 442         return load_vfont(FO_BUILTIN_NAME);
 443 }
 444
 445 static VChar *find_vfont_char(VFontData *vfd, intptr_t character)
 446 {
 447         VChar *che= NULL;
 448
 449         for(che = vfd->characters.first; che; che = che->next) {
 450                 if(che->index == character)
 451                         break;
 452         }
 453         return che; /* NULL if not found */
 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 == NULL){
 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] = 1.0f;
 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] = 1.0f;
 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] = 1.0f;
 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] = 1.0f;
 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;
 511
 512         vfd= vfont_get_data(which_vfont(cu, info));
 513         if (!vfd) return;
 514
 515         /*
 516         if (cu->selend < cu->selstart) {
 517                 if ((charidx >= (cu->selend)) && (charidx <= (cu->selstart-2)))
 518                         sel= 1;
 519         }
 520         else {
 521                 if ((charidx >= (cu->selstart-1)) && (charidx <= (cu->selend-1)))
 522                         sel= 1;
 523         }
 524         */
 525
 526         /* make a copy at distance ofsx,ofsy with shear*/
 527         fsize= cu->fsize;
 528         shear= cu->shear;
 529         si= (float)sin(rot);
 530         co= (float)cos(rot);
 531
 532         che= find_vfont_char(vfd, character);
 533
 534         // Select the glyph data
 535         if(che)
 536                 nu1 = che->nurbsbase.first;
 537
 538         // Create the character
 539         while(nu1)
 540         {
 541                 bezt1 = nu1->bezt;
 542                 if (bezt1){
 543                         nu2 =(Nurb*) MEM_mallocN(sizeof(Nurb),"duplichar_nurb");
 544                         if (nu2 == NULL) break;
 545                         memcpy(nu2, nu1, sizeof(struct Nurb));
 546                         nu2->resolu= cu->resolu;
 547                         nu2->bp = NULL;
 548                         nu2->knotsu = nu2->knotsv = NULL;
 549                         nu2->flag= CU_SMOOTH;
 550                         nu2->charidx = charidx;
 551                         if (info->mat_nr) {
 552                                 nu2->mat_nr= info->mat_nr-1;
 553                         }
 554                         else {
 555                                 nu2->mat_nr= 0;
 556                         }
 557                         /* nu2->trim.first = 0; */
 558                         /* nu2->trim.last = 0; */
 559                         i = nu2->pntsu;
 560
 561                         bezt2 = (BezTriple*)MEM_mallocN(i * sizeof(BezTriple),"duplichar_bezt2");
 562                         if (bezt2 == NULL){
 563                                 MEM_freeN(nu2);
 564                                 break;
 565                         }
 566                         memcpy(bezt2, bezt1, i * sizeof(struct BezTriple));
 567                         nu2->bezt = bezt2;
 568
 569                         if (shear != 0.0f) {
 570                                 bezt2 = nu2->bezt;
 571
 572                                 for (i= nu2->pntsu; i > 0; i--) {
 573                                         bezt2->vec[0][0] += shear * bezt2->vec[0][1];
 574                                         bezt2->vec[1][0] += shear * bezt2->vec[1][1];
 575                                         bezt2->vec[2][0] += shear * bezt2->vec[2][1];
 576                                         bezt2++;
 577                                 }
 578                         }
 579                         if(rot != 0.0f) {
 580                                 bezt2= nu2->bezt;
 581                                 for (i=nu2->pntsu; i > 0; i--) {
 582                                         fp= bezt2->vec[0];
 583
 584                                         x= fp[0];
 585                                         fp[0]= co*x + si*fp[1];
 586                                         fp[1]= -si*x + co*fp[1];
 587                                         x= fp[3];
 588                                         fp[3]= co*x + si*fp[4];
 589                                         fp[4]= -si*x + co*fp[4];
 590                                         x= fp[6];
 591                                         fp[6]= co*x + si*fp[7];
 592                                         fp[7]= -si*x + co*fp[7];
 593
 594                                         bezt2++;
 595                                 }
 596                         }
 597                         bezt2 = nu2->bezt;
 598
 599                         if(info->flag & CU_CHINFO_SMALLCAPS_CHECK) {
 600                                 const float sca= cu->smallcaps_scale;
 601                                 for (i= nu2->pntsu; i > 0; i--) {
 602                                         fp= bezt2->vec[0];
 603                                         fp[0] *= sca;
 604                                         fp[1] *= sca;
 605                                         fp[3] *= sca;
 606                                         fp[4] *= sca;
 607                                         fp[6] *= sca;
 608                                         fp[7] *= sca;
 609                                         bezt2++;
 610                                 }
 611                         }
 612                         bezt2 = nu2->bezt;
 613
 614                         for (i= nu2->pntsu; i > 0; i--) {
 615                                 fp= bezt2->vec[0];
 616                                 fp[0]= (fp[0]+ofsx)*fsize;
 617                                 fp[1]= (fp[1]+ofsy)*fsize;
 618                                 fp[3]= (fp[3]+ofsx)*fsize;
 619                                 fp[4]= (fp[4]+ofsy)*fsize;
 620                                 fp[6]= (fp[6]+ofsx)*fsize;
 621                                 fp[7]= (fp[7]+ofsy)*fsize;
 622                                 bezt2++;
 623                         }
 624
 625                         BLI_addtail(&(cu->nurb), nu2);
 626                 }
 627
 628                 nu1 = nu1->next;
 629         }
 630 }
 631
 632 int BKE_font_getselection(Object *ob, int *start, int *end)
 633 {
 634         Curve *cu= ob->data;
 635
 636         if (cu->editfont==NULL || ob->type != OB_FONT) return 0;
 637
 638         if (cu->selstart == 0) return 0;
 639         if (cu->selstart <= cu->selend) {
 640                 *start = cu->selstart-1;
 641                 *end = cu->selend-1;
 642                 return 1;
 643         }
 644         else {
 645                 *start = cu->selend;
 646                 *end = cu->selstart-2;
 647                 return -1;
 648         }
 649 }
 650
 651 static float char_width(Curve *cu, VChar *che, CharInfo *info)
 652 {
 653         // The character wasn't found, propably ascii = 0, then the width shall be 0 as well
 654         if(che == NULL) {
 655                 return 0.0f;
 656         }
 657         else if(info->flag & CU_CHINFO_SMALLCAPS_CHECK) {
 658                 return che->width * cu->smallcaps_scale;
 659         }
 660         else {
 661                 return che->width;
 662         }
 663 }
 664
 665 struct chartrans *BKE_text_to_curve(Scene *scene, Object *ob, int mode)
 666 {
 667         VFont *vfont, *oldvfont;
 668         VFontData *vfd= NULL;
 669         Curve *cu;
 670         CharInfo *info = NULL, *custrinfo;
 671         TextBox *tb;
 672         VChar *che;
 673         struct chartrans *chartransdata=NULL, *ct;
 674         float *f, xof, yof, xtrax, linedist, *linedata, *linedata2, *linedata3, *linedata4;
 675         float twidth, maxlen= 0;
 676         int i, slen, j;
 677         int curbox;
 678         int selstart, selend;
 679         int utf8len;
 680         short cnr=0, lnr=0, wsnr= 0;
 681         wchar_t *mem, *tmp, ascii;
 682
 683         /* renark: do calculations including the trailing '\0' of a string
 684            because the cursor can be at that location */
 685
 686         if(ob->type!=OB_FONT) return NULL;
 687
 688         // Set font data
 689         cu= (Curve *) ob->data;
 690         vfont= cu->vfont;
 691
 692         if(cu->str == NULL) return NULL;
 693         if(vfont == NULL) return NULL;
 694
 695         // Create unicode string
 696         utf8len = utf8slen(cu->str);
 697         mem = MEM_callocN(((utf8len + 1) * sizeof(wchar_t)), "convertedmem");
 698
 699         utf8towchar(mem, cu->str);
 700
 701         // Count the wchar_t string length
 702         slen = wcslen(mem);
 703
 704         if (cu->ulheight == 0.0f)
 705                 cu->ulheight = 0.05f;
 706
 707         if (cu->strinfo==NULL)  /* old file */
 708                 cu->strinfo = MEM_callocN((slen+4) * sizeof(CharInfo), "strinfo compat");
 709
 710         custrinfo= cu->strinfo;
 711         if (cu->editfont)
 712                 custrinfo= cu->editfont->textbufinfo;
 713
 714         if (cu->tb==NULL)
 715                 cu->tb= MEM_callocN(MAXTEXTBOX*sizeof(TextBox), "TextBox compat");
 716
 717         vfd= vfont_get_data(vfont);
 718
 719         /* The VFont Data can not be found */
 720         if(!vfd) {
 721                 if(mem)
 722                         MEM_freeN(mem);
 723                 return NULL;
 724         }
 725
 726         /* calc offset and rotation of each char */
 727         ct = chartransdata =
 728                 (struct chartrans*)MEM_callocN((slen+1)* sizeof(struct chartrans),"buildtext");
 729
 730         /* We assume the worst case: 1 character per line (is freed at end anyway) */
 731
 732         linedata= MEM_mallocN(sizeof(float)*(slen*2 + 1),"buildtext2");
 733         linedata2= MEM_mallocN(sizeof(float)*(slen*2 + 1),"buildtext3");
 734         linedata3= MEM_callocN(sizeof(float)*(slen*2 + 1),"buildtext4");
 735         linedata4= MEM_callocN(sizeof(float)*(slen*2 + 1),"buildtext5");
 736
 737         linedist= cu->linedist;
 738
 739         xof= cu->xof + (cu->tb[0].x/cu->fsize);
 740         yof= cu->yof + (cu->tb[0].y/cu->fsize);
 741
 742         xtrax= 0.5f*cu->spacing-0.5f;
 743
 744         oldvfont = NULL;
 745
 746         for (i=0; i<slen; i++) custrinfo[i].flag &= ~(CU_CHINFO_WRAP|CU_CHINFO_SMALLCAPS_CHECK);
 747
 748         if (cu->selboxes) MEM_freeN(cu->selboxes);
 749         cu->selboxes = NULL;
 750         if (BKE_font_getselection(ob, &selstart, &selend))
 751                 cu->selboxes = MEM_callocN((selend-selstart+1)*sizeof(SelBox), "font selboxes");
 752
 753         tb = &(cu->tb[0]);
 754         curbox= 0;
 755         for (i = 0 ; i<=slen ; i++) {
 756         makebreak:
 757                 // Characters in the list
 758                 info = &(custrinfo[i]);
 759                 ascii = mem[i];
 760                 if(info->flag & CU_CHINFO_SMALLCAPS) {
 761                         ascii = towupper(ascii);
 762                         if(mem[i] != ascii) {
 763                                 mem[i]= ascii;
 764                                 info->flag |= CU_CHINFO_SMALLCAPS_CHECK;
 765                         }
 766                 }
 767
 768                 vfont = which_vfont(cu, info);
 769
 770                 if(vfont==NULL) break;
 771
 772                 che= find_vfont_char(vfd, ascii);
 773
 774                 /*
 775                  * The character wasn't in the current curve base so load it
 776                  * But if the font is FO_BUILTIN_NAME then do not try loading since
 777                  * whole font is in the memory already
 778                  */
 779                 if(che == NULL && strcmp(vfont->name, FO_BUILTIN_NAME)) {
 780                         BLI_vfontchar_from_freetypefont(vfont, ascii);
 781                 }
 782
 783                 /* Try getting the character again from the list */
 784                 che= find_vfont_char(vfd, ascii);
 785
 786                 /* No VFont found */
 787                 if (vfont==NULL) {
 788                         if(mem)
 789                                 MEM_freeN(mem);
 790                         MEM_freeN(chartransdata);
 791                         return NULL;
 792                 }
 793
 794                 if (vfont != oldvfont) {
 795                         vfd= vfont_get_data(vfont);
 796                         oldvfont = vfont;
 797                 }
 798
 799                 /* VFont Data for VFont couldn't be found */
 800                 if (!vfd) {
 801                         if(mem)
 802                                 MEM_freeN(mem);
 803                         MEM_freeN(chartransdata);
 804                         return NULL;
 805                 }
 806
 807                 twidth = char_width(cu, che, info);
 808
 809                 // Calculate positions
 810                 if((tb->w != 0.0f) && (ct->dobreak==0) && ((xof-(tb->x/cu->fsize)+twidth)*cu->fsize) > tb->w + cu->xof*cu->fsize) {
 811         //              fprintf(stderr, "linewidth exceeded: %c%c%c...\n", mem[i], mem[i+1], mem[i+2]);
 812                         for (j=i; j && (mem[j] != '\n') && (mem[j] != '\r') && (chartransdata[j].dobreak==0); j--) {
 813                                 if (mem[j]==' ' || mem[j]=='-') {
 814                                         ct -= (i-(j-1));
 815                                         cnr -= (i-(j-1));
 816                                         if (mem[j] == ' ') wsnr--;
 817                                         if (mem[j] == '-') wsnr++;
 818                                         i = j-1;
 819                                         xof = ct->xof;
 820                                         ct[1].dobreak = 1;
 821                                         custrinfo[i+1].flag |= CU_CHINFO_WRAP;
 822                                         goto makebreak;
 823                                 }
 824                                 if (chartransdata[j].dobreak) {
 825         //                              fprintf(stderr, "word too long: %c%c%c...\n", mem[j], mem[j+1], mem[j+2]);
 826                                         ct->dobreak= 1;
 827                                         custrinfo[i+1].flag |= CU_CHINFO_WRAP;
 828                                         ct -= 1;
 829                                         cnr -= 1;
 830                                         i--;
 831                                         xof = ct->xof;
 832                                         goto makebreak;
 833                                 }
 834                         }
 835                 }
 836                 if(ascii== '\n' || ascii== '\r' || ascii==0 || ct->dobreak) {
 837                         ct->xof= xof;
 838                         ct->yof= yof;
 839                         ct->linenr= lnr;
 840                         ct->charnr= cnr;
 841
 842                         yof-= linedist;
 843
 844                         maxlen= MAX2(maxlen, (xof-tb->x/cu->fsize));
 845                         linedata[lnr]= xof-tb->x/cu->fsize;
 846                         linedata2[lnr]= cnr;
 847                         linedata3[lnr]= tb->w/cu->fsize;
 848                         linedata4[lnr]= wsnr;
 849
 850                         if ( (tb->h != 0.0f) &&
 851                                  ((-(yof-(tb->y/cu->fsize))) > ((tb->h/cu->fsize)-(linedist*cu->fsize)) - cu->yof) &&
 852                                  (cu->totbox > (curbox+1)) ) {
 853                                 maxlen= 0;
 854                                 tb++;
 855                                 curbox++;
 856                                 yof= cu->yof + tb->y/cu->fsize;
 857                         }
 858
 859                         /* XXX, has been unused for years, need to check if this is useful, r4613 r5282 - campbell */
 860 #if 0
 861                         if(ascii == '\n' || ascii == '\r')
 862                                 xof = cu->xof;
 863                         else
 864                                 xof= cu->xof + (tb->x/cu->fsize);
 865 #else
 866                         xof= cu->xof + (tb->x/cu->fsize);
 867 #endif
 868                         lnr++;
 869                         cnr= 0;
 870                         wsnr= 0;
 871                 }
 872                 else if(ascii==9) {     /* TAB */
 873                         float tabfac;
 874
 875                         ct->xof= xof;
 876                         ct->yof= yof;
 877                         ct->linenr= lnr;
 878                         ct->charnr= cnr++;
 879
 880                         tabfac= (xof-cu->xof+0.01f);
 881                         tabfac= 2.0f*ceilf(tabfac/2.0f);
 882                         xof= cu->xof+tabfac;
 883                 }
 884                 else {
 885                         SelBox *sb= NULL;
 886                         float wsfac;
 887
 888                         ct->xof= xof;
 889                         ct->yof= yof;
 890                         ct->linenr= lnr;
 891                         ct->charnr= cnr++;
 892
 893                         if (cu->selboxes && (i>=selstart) && (i<=selend)) {
 894                                 sb = &(cu->selboxes[i-selstart]);
 895                                 sb->y = yof*cu->fsize-linedist*cu->fsize*0.1f;
 896                                 sb->h = linedist*cu->fsize;
 897                                 sb->w = xof*cu->fsize;
 898                         }
 899
 900                         if (ascii==32) {
 901                                 wsfac = cu->wordspace;
 902                                 wsnr++;
 903                         }
 904                         else wsfac = 1.0f;
 905
 906                         // Set the width of the character
 907                         twidth = char_width(cu, che, info);
 908
 909                         xof += (twidth*wsfac*(1.0f+(info->kern/40.0f)) ) + xtrax;
 910
 911                         if (sb)
 912                                 sb->w = (xof*cu->fsize) - sb->w;
 913                 }
 914                 ct++;
 915         }
 916
 917         cu->lines= 1;
 918         ct= chartransdata;
 919         tmp = mem;
 920         for (i= 0; i<=slen; i++, tmp++, ct++) {
 921                 ascii = *tmp;
 922                 if(ascii== '\n' || ascii== '\r' || ct->dobreak) cu->lines++;
 923         }
 924
 925         // linedata is now: width of line
 926         // linedata2 is now: number of characters
 927         // linedata3 is now: maxlen of that line
 928         // linedata4 is now: number of whitespaces of line
 929
 930         if(cu->spacemode!=CU_LEFT) {
 931                 ct= chartransdata;
 932
 933                 if(cu->spacemode==CU_RIGHT) {
 934                         for(i=0;i<lnr;i++) linedata[i]= linedata3[i]-linedata[i];
 935                         for (i=0; i<=slen; i++) {
 936                                 ct->xof+= linedata[ct->linenr];
 937                                 ct++;
 938                         }
 939                 } else if(cu->spacemode==CU_MIDDLE) {
 940                         for(i=0;i<lnr;i++) linedata[i]= (linedata3[i]-linedata[i])/2;
 941                         for (i=0; i<=slen; i++) {
 942                                 ct->xof+= linedata[ct->linenr];
 943                                 ct++;
 944                         }
 945                 } else if((cu->spacemode==CU_FLUSH) &&
 946                                   (cu->tb[0].w != 0.0f)) {
 947                         for(i=0;i<lnr;i++)
 948                                 if(linedata2[i]>1)
 949                                         linedata[i]= (linedata3[i]-linedata[i])/(linedata2[i]-1);
 950                         for (i=0; i<=slen; i++) {
 951                                 for (j=i; (mem[j]) && (mem[j]!='\n') &&
 952                                                   (mem[j]!='\r') && (chartransdata[j].dobreak==0) && (j<slen); j++);
 953 //                              if ((mem[j]!='\r') && (mem[j]!='\n') && (mem[j])) {
 954                                         ct->xof+= ct->charnr*linedata[ct->linenr];
 955 //                              }
 956                                 ct++;
 957                         }
 958                 }
 959                 else if((cu->spacemode==CU_JUSTIFY) && (cu->tb[0].w != 0.0f)) {
 960                         float curofs= 0.0f;
 961                         for (i=0; i<=slen; i++) {
 962                                 for (j=i; (mem[j]) && (mem[j]!='\n') &&
 963                                                   (mem[j]!='\r') && (chartransdata[j].dobreak==0) && (j<slen); j++);
 964                                 if ((mem[j]!='\r') && (mem[j]!='\n') &&
 965                                         ((chartransdata[j].dobreak!=0))) {
 966                                         if (mem[i]==' ') curofs += (linedata3[ct->linenr]-linedata[ct->linenr])/linedata4[ct->linenr];
 967                                         ct->xof+= curofs;
 968                                 }
 969                                 if (mem[i]=='\n' || mem[i]=='\r' || chartransdata[i].dobreak) curofs= 0;
 970                                 ct++;
 971                         }
 972                 }
 973         }
 974
 975         /* TEXT ON CURVE */
 976         /* Note: Only OB_CURVE objects could have a path  */
 977         if(cu->textoncurve && cu->textoncurve->type==OB_CURVE) {
 978                 Curve *cucu= cu->textoncurve->data;
 979                 int oldflag= cucu->flag;
 980
 981                 cucu->flag |= (CU_PATH+CU_FOLLOW);
 982
 983                 if(cucu->path==NULL) makeDispListCurveTypes(scene, cu->textoncurve, 0);
 984                 if(cucu->path) {
 985                         float distfac, imat[4][4], imat3[3][3], cmat[3][3];
 986                         float minx, maxx, miny, maxy;
 987                         float timeofs, sizefac;
 988
 989                         invert_m4_m4(imat, ob->obmat);
 990                         copy_m3_m4(imat3, imat);
 991
 992                         copy_m3_m4(cmat, cu->textoncurve->obmat);
 993                         mul_m3_m3m3(cmat, cmat, imat3);
 994                         sizefac= normalize_v3(cmat[0])/cu->fsize;
 995
 996                         minx=miny= 1.0e20f;
 997                         maxx=maxy= -1.0e20f;
 998                         ct= chartransdata;
 999                         for (i=0; i<=slen; i++, ct++) {
1000                                 if(minx>ct->xof) minx= ct->xof;
1001                                 if(maxx<ct->xof) maxx= ct->xof;
1002                                 if(miny>ct->yof) miny= ct->yof;
1003                                 if(maxy<ct->yof) maxy= ct->yof;
1004                         }
1005
1006                         /* we put the x-coordinaat exact at the curve, the y is rotated */
1007
1008                         /* length correction */
1009                         distfac= sizefac*cucu->path->totdist/(maxx-minx);
1010                         timeofs= 0.0f;
1011
1012                         if(distfac > 1.0f) {
1013                                 /* path longer than text: spacemode involves */
1014                                 distfac= 1.0f/distfac;
1015
1016                                 if(cu->spacemode==CU_RIGHT) {
1017                                         timeofs= 1.0f-distfac;
1018                                 }
1019                                 else if(cu->spacemode==CU_MIDDLE) {
1020                                         timeofs= (1.0f-distfac)/2.0f;
1021                                 }
1022                                 else if(cu->spacemode==CU_FLUSH) distfac= 1.0f;
1023
1024                         }
1025                         else distfac= 1.0;
1026
1027                         distfac/= (maxx-minx);
1028
1029                         timeofs+= distfac*cu->xof;      /* not cyclic */
1030
1031                         ct= chartransdata;
1032                         for (i=0; i<=slen; i++, ct++) {
1033                                 float ctime, dtime, vec[4], tvec[4], rotvec[3];
1034                                 float si, co;
1035
1036                                 /* rotate around center character */
1037                                 ascii = mem[i];
1038
1039                                 che= find_vfont_char(vfd, ascii);
1040
1041                                 twidth = char_width(cu, che, info);
1042
1043                                 dtime= distfac*0.5f*twidth;
1044
1045                                 ctime= timeofs + distfac*( ct->xof - minx);
1046                                 CLAMP(ctime, 0.0f, 1.0f);
1047
1048                                 /* calc the right loc AND the right rot separately */
1049                                 /* vec, tvec need 4 items */
1050                                 where_on_path(cu->textoncurve, ctime, vec, tvec, NULL, NULL, NULL);
1051                                 where_on_path(cu->textoncurve, ctime+dtime, tvec, rotvec, NULL, NULL, NULL);
1052
1053                                 mul_v3_fl(vec, sizefac);
1054
1055                                 ct->rot= (float)(M_PI-atan2(rotvec[1], rotvec[0]));
1056
1057                                 si= (float)sin(ct->rot);
1058                                 co= (float)cos(ct->rot);
1059
1060                                 yof= ct->yof;
1061
1062                                 ct->xof= vec[0] + si*yof;
1063                                 ct->yof= vec[1] + co*yof;
1064
1065                         }
1066                         cucu->flag= oldflag;
1067                 }
1068         }
1069
1070         if (cu->selboxes) {
1071                 ct= chartransdata;
1072                 for (i=0; i<=selend; i++, ct++) {
1073                         if (i>=selstart) {
1074                                 cu->selboxes[i-selstart].x = ct->xof*cu->fsize;
1075                                 cu->selboxes[i-selstart].y = ct->yof*cu->fsize;
1076                         }
1077                 }
1078         }
1079
1080         if(mode==FO_CURSUP || mode==FO_CURSDOWN || mode==FO_PAGEUP || mode==FO_PAGEDOWN) {
1081                 /* 2: curs up
1082                    3: curs down */
1083                 ct= chartransdata+cu->pos;
1084
1085                 if((mode==FO_CURSUP || mode==FO_PAGEUP) && ct->linenr==0);
1086                 else if((mode==FO_CURSDOWN || mode==FO_PAGEDOWN) && ct->linenr==lnr);
1087                 else {
1088                         switch(mode) {
1089                                 case FO_CURSUP:         lnr= ct->linenr-1; break;
1090                                 case FO_CURSDOWN:       lnr= ct->linenr+1; break;
1091                                 case FO_PAGEUP:         lnr= ct->linenr-10; break;
1092                                 case FO_PAGEDOWN:       lnr= ct->linenr+10; break;
1093                         }
1094                         cnr= ct->charnr;
1095                         /* seek for char with lnr en cnr */
1096                         cu->pos= 0;
1097                         ct= chartransdata;
1098                         for (i= 0; i<slen; i++) {
1099                                 if(ct->linenr==lnr) {
1100                                         if(ct->charnr==cnr) break;
1101                                         if( (ct+1)->charnr==0) break;
1102                                 }
1103                                 else if(ct->linenr>lnr) break;
1104                                 cu->pos++;
1105                                 ct++;
1106                         }
1107                 }
1108         }
1109
1110         /* cursor first */
1111         if(cu->editfont) {
1112                 float si, co;
1113
1114                 ct= chartransdata+cu->pos;
1115                 si= (float)sin(ct->rot);
1116                 co= (float)cos(ct->rot);
1117
1118                 f= cu->editfont->textcurs[0];
1119
1120                 f[0]= cu->fsize*(-0.1f*co + ct->xof);
1121                 f[1]= cu->fsize*(0.1f*si + ct->yof);
1122
1123                 f[2]= cu->fsize*(0.1f*co + ct->xof);
1124                 f[3]= cu->fsize*(-0.1f*si + ct->yof);
1125
1126                 f[4]= cu->fsize*( 0.1f*co + 0.8f*si + ct->xof);
1127                 f[5]= cu->fsize*(-0.1f*si + 0.8f*co + ct->yof);
1128
1129                 f[6]= cu->fsize*(-0.1f*co + 0.8f*si + ct->xof);
1130                 f[7]= cu->fsize*( 0.1f*si + 0.8f*co + ct->yof);
1131
1132         }
1133
1134         MEM_freeN(linedata);
1135         MEM_freeN(linedata2);
1136         MEM_freeN(linedata3);
1137         MEM_freeN(linedata4);
1138
1139         if (mode == FO_SELCHANGE) {
1140                 MEM_freeN(chartransdata);
1141                 MEM_freeN(mem);
1142                 return NULL;
1143         }
1144
1145         if(mode == FO_EDIT) {
1146                 /* make nurbdata */
1147                 freeNurblist(&cu->nurb);
1148
1149                 ct= chartransdata;
1150                 if (cu->sepchar==0) {
1151                         for (i= 0; i<slen; i++) {
1152                                 unsigned long cha = (uintptr_t) mem[i];
1153                                 info = &(custrinfo[i]);
1154                                 if (info->mat_nr > (ob->totcol)) {
1155                                         /* printf("Error: Illegal material index (%d) in text object, setting to 0\n", info->mat_nr); */
1156                                         info->mat_nr = 0;
1157                                 }
1158                                 // We do not want to see any character for \n or \r
1159                                 if(cha != '\n' && cha != '\r')
1160                                         buildchar(cu, cha, info, ct->xof, ct->yof, ct->rot, i);
1161
1162                                 if ((info->flag & CU_CHINFO_UNDERLINE) && (cu->textoncurve == NULL) && (cha != '\n') && (cha != '\r')) {
1163                                         float ulwidth, uloverlap= 0.0f;
1164
1165                                         if ( (i<(slen-1)) && (mem[i+1] != '\n') && (mem[i+1] != '\r') &&
1166                                                  ((mem[i+1] != ' ') || (custrinfo[i+1].flag & CU_CHINFO_UNDERLINE)) && ((custrinfo[i+1].flag & CU_CHINFO_WRAP)==0)
1167                                                  ) {
1168                                                 uloverlap = xtrax + 0.1f;
1169                                         }
1170                                         // Find the character, the characters has to be in the memory already
1171                                         // since character checking has been done earlier already.
1172                                         che= find_vfont_char(vfd, cha);
1173
1174                                         twidth = char_width(cu, che, info);
1175                                         ulwidth = cu->fsize * ((twidth* (1.0f+(info->kern/40.0f)))+uloverlap);
1176                                         build_underline(cu, ct->xof*cu->fsize, ct->yof*cu->fsize + (cu->ulpos-0.05f)*cu->fsize,
1177                                                                         ct->xof*cu->fsize + ulwidth,
1178                                                                         ct->yof*cu->fsize + (cu->ulpos-0.05f)*cu->fsize - cu->ulheight*cu->fsize,
1179                                                                         i, info->mat_nr);
1180                                 }
1181                                 ct++;
1182                         }
1183                 }
1184                 else {
1185                         int outta = 0;
1186                         for (i= 0; (i<slen) && (outta==0); i++) {
1187                                 ascii = mem[i];
1188                                 info = &(custrinfo[i]);
1189                                 if (cu->sepchar == (i+1)) {
1190                                         float vecyo[3];
1191
1192                                         vecyo[0]= ct->xof;
1193                                         vecyo[1]= ct->yof;
1194                                         vecyo[2]= 0.0f;
1195
1196                                         mem[0] = ascii;
1197                                         mem[1] = 0;
1198                                         custrinfo[0]= *info;
1199                                         cu->pos = 1;
1200                                         cu->len = 1;
1201                                         mul_v3_m4v3(ob->loc, ob->obmat, vecyo);
1202                                         outta = 1;
1203                                         cu->sepchar = 0;
1204                                 }
1205                                 ct++;
1206                         }
1207                 }
1208         }
1209
1210         if(mode==FO_DUPLI) {
1211                 MEM_freeN(mem);
1212                 return chartransdata;
1213         }
1214
1215         if(mem)
1216                 MEM_freeN(mem);
1217
1218         MEM_freeN(chartransdata);
1219         return NULL;
1220 }