source/blender/blenkernel/intern/font.c

   1 /*
   2  * ***** BEGIN GPL LICENSE BLOCK *****
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  *
  18  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
  19  * All rights reserved.
  20  *
  21  * The Original Code is: all of this file.
  22  *
  23  * Contributor(s): none yet.
  24  *
  25  * ***** END GPL LICENSE BLOCK *****
  26  */
  27
  28 /** \file blender/blenkernel/intern/font.c
  29  *  \ingroup bke
  30  */
  31
  32
  33 #include <stdio.h>
  34 #include <string.h>
  35 #include <math.h>
  36 #include <stdlib.h>
  37 #include <wchar.h>
  38 #include <wctype.h>
  39
  40 #include "MEM_guardedalloc.h"
  41
  42 #include "BLI_utildefines.h"
  43 #include "BLI_path_util.h"
  44 #include "BLI_listbase.h"
  45 #include "BLI_ghash.h"
  46 #include "BLI_string.h"
  47 #include "BLI_string_utf8.h"
  48 #include "BLI_math.h"
  49 #include "BLI_threads.h"
  50 #include "BLI_vfontdata.h"
  51
  52 #include "DNA_packedFile_types.h"
  53 #include "DNA_curve_types.h"
  54 #include "DNA_vfont_types.h"
  55 #include "DNA_object_types.h"
  56
  57 #include "BKE_packedFile.h"
  58 #include "BKE_library.h"
  59 #include "BKE_font.h"
  60 #include "BKE_global.h"
  61 #include "BKE_main.h"
  62 #include "BKE_anim.h"
  63 #include "BKE_curve.h"
  64
  65 static ThreadRWMutex vfont_rwlock = BLI_RWLOCK_INITIALIZER;
  66
  67 /* The vfont code */
  68 void BKE_vfont_free_data(struct VFont *vfont)
  69 {
  70         if (vfont->data) {
  71                 if (vfont->data->characters) {
  72                         GHashIterator gh_iter;
  73                         GHASH_ITER (gh_iter, vfont->data->characters) {
  74                                 VChar *che = BLI_ghashIterator_getValue(&gh_iter);
  75
  76                                 while (che->nurbsbase.first) {
  77                                         Nurb *nu = che->nurbsbase.first;
  78                                         if (nu->bezt) MEM_freeN(nu->bezt);
  79                                         BLI_freelinkN(&che->nurbsbase, nu);
  80                                 }
  81
  82                                 MEM_freeN(che);
  83                         }
  84
  85                         BLI_ghash_free(vfont->data->characters, NULL, NULL);
  86                 }
  87
  88                 MEM_freeN(vfont->data);
  89                 vfont->data = NULL;
  90         }
  91
  92         if (vfont->temp_pf) {
  93                 freePackedFile(vfont->temp_pf);  /* NULL when the font file can't be found on disk */
  94                 vfont->temp_pf = NULL;
  95         }
  96 }
  97
  98 void BKE_vfont_free(struct VFont *vf)
  99 {
 100         if (vf == NULL) return;
 101
 102         BKE_vfont_free_data(vf);
 103
 104         if (vf->packedfile) {
 105                 freePackedFile(vf->packedfile);
 106                 vf->packedfile = NULL;
 107         }
 108 }
 109
 110 static void *builtin_font_data = NULL;
 111 static int builtin_font_size = 0;
 112
 113 bool BKE_vfont_is_builtin(struct VFont *vfont)
 114 {
 115         return STREQ(vfont->name, FO_BUILTIN_NAME);
 116 }
 117
 118 void BKE_vfont_builtin_register(void *mem, int size)
 119 {
 120         builtin_font_data = mem;
 121         builtin_font_size = size;
 122 }
 123
 124 static PackedFile *get_builtin_packedfile(void)
 125 {
 126         if (!builtin_font_data) {
 127                 printf("Internal error, builtin font not loaded\n");
 128
 129                 return NULL;
 130         }
 131         else {
 132                 void *mem = MEM_mallocN(builtin_font_size, "vfd_builtin");
 133
 134                 memcpy(mem, builtin_font_data, builtin_font_size);
 135
 136                 return newPackedFileMemory(mem, builtin_font_size);
 137         }
 138 }
 139
 140 static VFontData *vfont_get_data(Main *bmain, VFont *vfont)
 141 {
 142         if (vfont == NULL) {
 143                 return NULL;
 144         }
 145
 146         /* And then set the data */
 147         if (!vfont->data) {
 148                 PackedFile *pf;
 149
 150                 BLI_rw_mutex_lock(&vfont_rwlock, THREAD_LOCK_WRITE);
 151
 152                 if (vfont->data) {
 153                         /* Check data again, since it might have been already
 154                          * initialized from other thread (previous check is
 155                          * not accurate or threading, just prevents unneeded
 156                          * lock if all the data is here for sure).
 157                          */
 158                         BLI_rw_mutex_unlock(&vfont_rwlock);
 159                         return vfont->data;
 160                 }
 161
 162                 if (BKE_vfont_is_builtin(vfont)) {
 163                         pf = get_builtin_packedfile();
 164                 }
 165                 else {
 166                         if (vfont->packedfile) {
 167                                 pf = vfont->packedfile;
 168
 169                                 /* We need to copy a tmp font to memory unless it is already there */
 170                                 if (vfont->temp_pf == NULL) {
 171                                         vfont->temp_pf = dupPackedFile(pf);
 172                                 }
 173                         }
 174                         else {
 175                                 pf = newPackedFile(NULL, vfont->name, ID_BLEND_PATH(bmain, &vfont->id));
 176
 177                                 if (vfont->temp_pf == NULL) {
 178                                         vfont->temp_pf = newPackedFile(NULL, vfont->name, ID_BLEND_PATH(bmain, &vfont->id));
 179                                 }
 180                         }
 181                         if (!pf) {
 182                                 printf("Font file doesn't exist: %s\n", vfont->name);
 183
 184                                 /* DON'T DO THIS
 185                                  * missing file shouldn't modify path! - campbell */
 186 #if 0
 187                                 strcpy(vfont->name, FO_BUILTIN_NAME);
 188 #endif
 189                                 pf = get_builtin_packedfile();
 190                         }
 191                 }
 192
 193                 if (pf) {
 194                         vfont->data = BLI_vfontdata_from_freetypefont(pf);
 195                         if (pf != vfont->packedfile) {
 196                                 freePackedFile(pf);
 197                         }
 198                 }
 199
 200                 BLI_rw_mutex_unlock(&vfont_rwlock);
 201         }
 202
 203         return vfont->data;
 204 }
 205
 206 VFont *BKE_vfont_load(Main *bmain, const char *filepath)
 207 {
 208         char filename[FILE_MAXFILE];
 209         VFont *vfont = NULL;
 210         PackedFile *pf;
 211         PackedFile *temp_pf = NULL;
 212         bool is_builtin;
 213
 214         if (STREQ(filepath, FO_BUILTIN_NAME)) {
 215                 BLI_strncpy(filename, filepath, sizeof(filename));
 216
 217                 pf = get_builtin_packedfile();
 218                 is_builtin = true;
 219         }
 220         else {
 221                 BLI_split_file_part(filepath, filename, sizeof(filename));
 222                 pf = newPackedFile(NULL, filepath, bmain->name);
 223                 temp_pf = newPackedFile(NULL, filepath, bmain->name);
 224
 225                 is_builtin = false;
 226         }
 227
 228         if (pf) {
 229                 VFontData *vfd;
 230
 231                 vfd = BLI_vfontdata_from_freetypefont(pf);
 232                 if (vfd) {
 233                         vfont = BKE_libblock_alloc(bmain, ID_VF, filename);
 234                         vfont->data = vfd;
 235
 236                         /* if there's a font name, use it for the ID name */
 237                         if (vfd->name[0] != '\0') {
 238                                 BLI_strncpy(vfont->id.name + 2, vfd->name, sizeof(vfont->id.name) - 2);
 239                         }
 240                         BLI_strncpy(vfont->name, filepath, sizeof(vfont->name));
 241
 242                         /* if autopack is on store the packedfile in de font structure */
 243                         if (!is_builtin && (G.fileflags & G_AUTOPACK)) {
 244                                 vfont->packedfile = pf;
 245                         }
 246
 247                         /* Do not add FO_BUILTIN_NAME to temporary listbase */
 248                         if (!STREQ(filename, FO_BUILTIN_NAME)) {
 249                                 vfont->temp_pf = temp_pf;
 250                         }
 251                 }
 252
 253                 /* Free the packed file */
 254                 if (!vfont || vfont->packedfile != pf) {
 255                         freePackedFile(pf);
 256                 }
 257         }
 258
 259         return vfont;
 260 }
 261
 262 VFont *BKE_vfont_load_exists_ex(struct Main *bmain, const char *filepath, bool *r_exists)
 263 {
 264         VFont *vfont;
 265         char str[FILE_MAX], strtest[FILE_MAX];
 266
 267         BLI_strncpy(str, filepath, sizeof(str));
 268         BLI_path_abs(str, bmain->name);
 269
 270         /* first search an identical filepath */
 271         for (vfont = bmain->vfont.first; vfont; vfont = vfont->id.next) {
 272                 BLI_strncpy(strtest, vfont->name, sizeof(vfont->name));
 273                 BLI_path_abs(strtest, ID_BLEND_PATH(bmain, &vfont->id));
 274
 275                 if (BLI_path_cmp(strtest, str) == 0) {
 276                         vfont->id.us++;  /* officially should not, it doesn't link here! */
 277                         if (r_exists)
 278                                 *r_exists = true;
 279                         return vfont;
 280                 }
 281         }
 282
 283         if (r_exists)
 284                 *r_exists = false;
 285         return BKE_vfont_load(bmain, filepath);
 286 }
 287
 288 VFont *BKE_vfont_load_exists(struct Main *bmain, const char *filepath)
 289 {
 290         return BKE_vfont_load_exists_ex(bmain, filepath, NULL);
 291 }
 292
 293 static VFont *which_vfont(Curve *cu, CharInfo *info)
 294 {
 295         switch (info->flag & (CU_CHINFO_BOLD | CU_CHINFO_ITALIC)) {
 296                 case CU_CHINFO_BOLD:
 297                         return cu->vfontb ? cu->vfontb : cu->vfont;
 298                 case CU_CHINFO_ITALIC:
 299                         return cu->vfonti ? cu->vfonti : cu->vfont;
 300                 case (CU_CHINFO_BOLD | CU_CHINFO_ITALIC):
 301                         return cu->vfontbi ? cu->vfontbi : cu->vfont;
 302                 default:
 303                         return cu->vfont;
 304         }
 305 }
 306
 307 VFont *BKE_vfont_builtin_get(void)
 308 {
 309         VFont *vfont;
 310
 311         for (vfont = G.main->vfont.first; vfont; vfont = vfont->id.next) {
 312                 if (BKE_vfont_is_builtin(vfont)) {
 313                         return vfont;
 314                 }
 315         }
 316
 317         return BKE_vfont_load(G.main, FO_BUILTIN_NAME);
 318 }
 319
 320 static VChar *find_vfont_char(VFontData *vfd, unsigned int character)
 321 {
 322         return BLI_ghash_lookup(vfd->characters, SET_UINT_IN_POINTER(character));
 323 }
 324
 325 static void build_underline(Curve *cu, ListBase *nubase, const rctf *rect,
 326                             float yofs, float rot, int charidx, short mat_nr)
 327 {
 328         Nurb *nu2;
 329         BPoint *bp;
 330
 331         nu2 = (Nurb *) MEM_callocN(sizeof(Nurb), "underline_nurb");
 332         nu2->resolu = cu->resolu;
 333         nu2->bezt = NULL;
 334         nu2->knotsu = nu2->knotsv = NULL;
 335         nu2->flag = CU_2D;
 336         nu2->charidx = charidx + 1000;
 337         if (mat_nr > 0) nu2->mat_nr = mat_nr - 1;
 338         nu2->pntsu = 4;
 339         nu2->pntsv = 1;
 340         nu2->orderu = 4;
 341         nu2->orderv = 1;
 342         nu2->flagu = CU_NURB_CYCLIC;
 343
 344         bp = (BPoint *)MEM_callocN(4 * sizeof(BPoint), "underline_bp");
 345
 346         copy_v4_fl4(bp[0].vec, rect->xmin, (rect->ymax + yofs), 0.0f, 1.0f);
 347         copy_v4_fl4(bp[1].vec, rect->xmax, (rect->ymax + yofs), 0.0f, 1.0f);
 348         copy_v4_fl4(bp[2].vec, rect->xmax, (rect->ymin + yofs), 0.0f, 1.0f);
 349         copy_v4_fl4(bp[3].vec, rect->xmin, (rect->ymin + yofs), 0.0f, 1.0f);
 350
 351         nu2->bp = bp;
 352         BLI_addtail(nubase, nu2);
 353
 354         if (rot != 0.0f) {
 355                 float si, co;
 356                 int i;
 357
 358                 si = sinf(rot);
 359                 co = cosf(rot);
 360
 361                 for (i = nu2->pntsu; i > 0; i--) {
 362                         float *fp;
 363                         float x, y;
 364
 365                         fp = bp->vec;
 366
 367                         x = fp[0] - rect->xmin;
 368                         y = fp[1] - rect->ymin;
 369
 370                         fp[0] = (+co * x + si * y) + rect->xmin;
 371                         fp[1] = (-si * x + co * y) + rect->ymin;
 372
 373                         bp++;
 374                 }
 375
 376                 bp = nu2->bp;
 377         }
 378
 379         mul_v2_fl(bp[0].vec, cu->fsize);
 380         mul_v2_fl(bp[1].vec, cu->fsize);
 381         mul_v2_fl(bp[2].vec, cu->fsize);
 382         mul_v2_fl(bp[3].vec, cu->fsize);
 383 }
 384
 385 static void buildchar(Main *bmain, Curve *cu, ListBase *nubase, unsigned int character, CharInfo *info,
 386                       float ofsx, float ofsy, float rot, int charidx)
 387 {
 388         BezTriple *bezt1, *bezt2;
 389         Nurb *nu1 = NULL, *nu2 = NULL;
 390         float *fp, fsize, shear, x, si, co;
 391         VFontData *vfd = NULL;
 392         VChar *che = NULL;
 393         int i;
 394
 395         vfd = vfont_get_data(bmain, which_vfont(cu, info));
 396         if (!vfd) return;
 397
 398 #if 0
 399         if (cu->selend < cu->selstart) {
 400                 if ((charidx >= (cu->selend)) && (charidx <= (cu->selstart - 2)))
 401                         sel = 1;
 402         }
 403         else {
 404                 if ((charidx >= (cu->selstart - 1)) && (charidx <= (cu->selend - 1)))
 405                         sel = 1;
 406         }
 407 #endif
 408
 409         /* make a copy at distance ofsx, ofsy with shear */
 410         fsize = cu->fsize;
 411         shear = cu->shear;
 412         si = sinf(rot);
 413         co = cosf(rot);
 414
 415         che = find_vfont_char(vfd, character);
 416
 417         /* Select the glyph data */
 418         if (che)
 419                 nu1 = che->nurbsbase.first;
 420
 421         /* Create the character */
 422         while (nu1) {
 423                 bezt1 = nu1->bezt;
 424                 if (bezt1) {
 425                         nu2 = (Nurb *) MEM_mallocN(sizeof(Nurb), "duplichar_nurb");
 426                         if (nu2 == NULL) break;
 427                         memcpy(nu2, nu1, sizeof(struct Nurb));
 428                         nu2->resolu = cu->resolu;
 429                         nu2->bp = NULL;
 430                         nu2->knotsu = nu2->knotsv = NULL;
 431                         nu2->flag = CU_SMOOTH;
 432                         nu2->charidx = charidx;
 433                         if (info->mat_nr > 0) {
 434                                 nu2->mat_nr = info->mat_nr - 1;
 435                         }
 436                         else {
 437                                 nu2->mat_nr = 0;
 438                         }
 439                         /* nu2->trim.first = 0; */
 440                         /* nu2->trim.last = 0; */
 441                         i = nu2->pntsu;
 442
 443                         bezt2 = (BezTriple *)MEM_mallocN(i * sizeof(BezTriple), "duplichar_bezt2");
 444                         if (bezt2 == NULL) {
 445                                 MEM_freeN(nu2);
 446                                 break;
 447                         }
 448                         memcpy(bezt2, bezt1, i * sizeof(struct BezTriple));
 449                         nu2->bezt = bezt2;
 450
 451                         if (shear != 0.0f) {
 452                                 bezt2 = nu2->bezt;
 453
 454                                 for (i = nu2->pntsu; i > 0; i--) {
 455                                         bezt2->vec[0][0] += shear * bezt2->vec[0][1];
 456                                         bezt2->vec[1][0] += shear * bezt2->vec[1][1];
 457                                         bezt2->vec[2][0] += shear * bezt2->vec[2][1];
 458                                         bezt2++;
 459                                 }
 460                         }
 461                         if (rot != 0.0f) {
 462                                 bezt2 = nu2->bezt;
 463                                 for (i = nu2->pntsu; i > 0; i--) {
 464                                         fp = bezt2->vec[0];
 465
 466                                         x = fp[0];
 467                                         fp[0] = co * x + si * fp[1];
 468                                         fp[1] = -si * x + co * fp[1];
 469                                         x = fp[3];
 470                                         fp[3] = co * x + si * fp[4];
 471                                         fp[4] = -si * x + co * fp[4];
 472                                         x = fp[6];
 473                                         fp[6] = co * x + si * fp[7];
 474                                         fp[7] = -si * x + co * fp[7];
 475
 476                                         bezt2++;
 477                                 }
 478                         }
 479                         bezt2 = nu2->bezt;
 480
 481                         if (info->flag & CU_CHINFO_SMALLCAPS_CHECK) {
 482                                 const float sca = cu->smallcaps_scale;
 483                                 for (i = nu2->pntsu; i > 0; i--) {
 484                                         fp = bezt2->vec[0];
 485                                         fp[0] *= sca;
 486                                         fp[1] *= sca;
 487                                         fp[3] *= sca;
 488                                         fp[4] *= sca;
 489                                         fp[6] *= sca;
 490                                         fp[7] *= sca;
 491                                         bezt2++;
 492                                 }
 493                         }
 494                         bezt2 = nu2->bezt;
 495
 496                         for (i = nu2->pntsu; i > 0; i--) {
 497                                 fp = bezt2->vec[0];
 498                                 fp[0] = (fp[0] + ofsx) * fsize;
 499                                 fp[1] = (fp[1] + ofsy) * fsize;
 500                                 fp[3] = (fp[3] + ofsx) * fsize;
 501                                 fp[4] = (fp[4] + ofsy) * fsize;
 502                                 fp[6] = (fp[6] + ofsx) * fsize;
 503                                 fp[7] = (fp[7] + ofsy) * fsize;
 504                                 bezt2++;
 505                         }
 506
 507                         BLI_addtail(nubase, nu2);
 508                 }
 509
 510                 nu1 = nu1->next;
 511         }
 512 }
 513
 514 int BKE_vfont_select_get(Object *ob, int *r_start, int *r_end)
 515 {
 516         Curve *cu = ob->data;
 517         EditFont *ef = cu->editfont;
 518         int start, end, direction;
 519
 520         if ((ob->type != OB_FONT) || (ef == NULL)) return 0;
 521
 522         BLI_assert(ef->len >= 0);
 523         BLI_assert(ef->selstart >= 0 && ef->selstart <= ef->len + 1);
 524         BLI_assert(ef->selend   >= 0 && ef->selend   <= ef->len);
 525         BLI_assert(ef->pos      >= 0 && ef->pos      <= ef->len);
 526
 527         if (ef->selstart == 0) {
 528                 return 0;
 529         }
 530
 531         if (ef->selstart <= ef->selend) {
 532                 start = ef->selstart - 1;
 533                 end = ef->selend - 1;
 534                 direction = 1;
 535         }
 536         else {
 537                 start = ef->selend;
 538                 end = ef->selstart - 2;
 539                 direction = -1;
 540         }
 541
 542         if (start == end + 1) {
 543                 return 0;
 544         }
 545         else {
 546                 BLI_assert(start < end + 1);
 547                 *r_start = start;
 548                 *r_end = end;
 549                 return direction;
 550         }
 551 }
 552
 553 void BKE_vfont_select_clamp(Object *ob)
 554 {
 555         Curve *cu = ob->data;
 556         EditFont *ef = cu->editfont;
 557
 558         BLI_assert((ob->type == OB_FONT) && ef);
 559
 560         CLAMP_MAX(ef->pos,      ef->len);
 561         CLAMP_MAX(ef->selstart, ef->len + 1);
 562         CLAMP_MAX(ef->selend,   ef->len);
 563 }
 564
 565 static float char_width(Curve *cu, VChar *che, CharInfo *info)
 566 {
 567         /* The character wasn't found, propably ascii = 0, then the width shall be 0 as well */
 568         if (che == NULL) {
 569                 return 0.0f;
 570         }
 571         else if (info->flag & CU_CHINFO_SMALLCAPS_CHECK) {
 572                 return che->width * cu->smallcaps_scale;
 573         }
 574         else {
 575                 return che->width;
 576         }
 577 }
 578
 579 static void textbox_scale(TextBox *tb_dst, const TextBox *tb_src, float scale)
 580 {
 581         tb_dst->x = tb_src->x * scale;
 582         tb_dst->y = tb_src->y * scale;
 583         tb_dst->w = tb_src->w * scale;
 584         tb_dst->h = tb_src->h * scale;
 585 }
 586
 587 /**
 588  * Used for storing per-line data for alignment & wrapping.
 589  */
 590 struct TempLineInfo {
 591         float x_min;      /* left margin */
 592         float x_max;      /* right margin */
 593         int   char_nr;    /* number of characters */
 594         int   wspace_nr;  /* number of whitespaces of line */
 595 };
 596
 597 bool BKE_vfont_to_curve_ex(Main *bmain, Object *ob, int mode, ListBase *r_nubase,
 598                            const wchar_t **r_text, int *r_text_len, bool *r_text_free,
 599                            struct CharTrans **r_chartransdata)
 600 {
 601         Curve *cu = ob->data;
 602         EditFont *ef = cu->editfont;
 603         EditFontSelBox *selboxes = NULL;
 604         VFont *vfont, *oldvfont;
 605         VFontData *vfd = NULL;
 606         CharInfo *info = NULL, *custrinfo;
 607         TextBox tb_scale;
 608         bool use_textbox;
 609         VChar *che;
 610         struct CharTrans *chartransdata = NULL, *ct;
 611         struct TempLineInfo *lineinfo;
 612         float *f, xof, yof, xtrax, linedist;
 613         float twidth, maxlen = 0;
 614         int i, slen, j;
 615         int curbox;
 616         int selstart, selend;
 617         int cnr = 0, lnr = 0, wsnr = 0;
 618         const wchar_t *mem;
 619         wchar_t ascii;
 620         bool ok = false;
 621         const float xof_scale = cu->xof / cu->fsize;
 622         const float yof_scale = cu->yof / cu->fsize;
 623
 624 #define MARGIN_X_MIN (xof_scale + tb_scale.x)
 625 #define MARGIN_Y_MIN (yof_scale + tb_scale.y)
 626
 627         /* remark: do calculations including the trailing '\0' of a string
 628          * because the cursor can be at that location */
 629
 630         BLI_assert(ob->type == OB_FONT);
 631
 632         /* Set font data */
 633         vfont = cu->vfont;
 634
 635         if (cu->str == NULL) return ok;
 636         if (vfont == NULL) return ok;
 637
 638         vfd = vfont_get_data(bmain, vfont);
 639
 640         /* The VFont Data can not be found */
 641         if (!vfd) return ok;
 642
 643         if (ef) {
 644                 slen = ef->len;
 645                 mem = ef->textbuf;
 646                 custrinfo = ef->textbufinfo;
 647         }
 648         else {
 649                 wchar_t *mem_tmp;
 650                 slen = cu->len_wchar;
 651
 652                 /* Create unicode string */
 653                 mem_tmp = MEM_mallocN(((slen + 1) * sizeof(wchar_t)), "convertedmem");
 654
 655                 BLI_strncpy_wchar_from_utf8(mem_tmp, cu->str, slen + 1);
 656
 657                 if (cu->strinfo == NULL) {  /* old file */
 658                         cu->strinfo = MEM_callocN((slen + 4) * sizeof(CharInfo), "strinfo compat");
 659                 }
 660                 custrinfo = cu->strinfo;
 661
 662                 mem = mem_tmp;
 663         }
 664
 665         if (cu->tb == NULL)
 666                 cu->tb = MEM_callocN(MAXTEXTBOX * sizeof(TextBox), "TextBox compat");
 667
 668         if (ef) {
 669                 if (ef->selboxes)
 670                         MEM_freeN(ef->selboxes);
 671
 672                 if (BKE_vfont_select_get(ob, &selstart, &selend))
 673                         ef->selboxes = MEM_callocN((selend - selstart + 1) * sizeof(EditFontSelBox), "font selboxes");
 674                 else
 675                         ef->selboxes = NULL;
 676
 677                 selboxes = ef->selboxes;
 678         }
 679
 680         /* calc offset and rotation of each char */
 681         ct = chartransdata = MEM_callocN((slen + 1) * sizeof(struct CharTrans), "buildtext");
 682
 683         /* We assume the worst case: 1 character per line (is freed at end anyway) */
 684         lineinfo = MEM_mallocN(sizeof(*lineinfo) * (slen * 2 + 1), "lineinfo");
 685
 686         linedist = cu->linedist;
 687
 688         curbox = 0;
 689         textbox_scale(&tb_scale, &cu->tb[curbox], 1.0f / cu->fsize);
 690         use_textbox = (tb_scale.w != 0.0f);
 691
 692
 693         xof = MARGIN_X_MIN;
 694         yof = MARGIN_Y_MIN;
 695
 696         xtrax = 0.5f * cu->spacing - 0.5f;
 697
 698         oldvfont = NULL;
 699
 700         for (i = 0; i < slen; i++) {
 701                 custrinfo[i].flag &= ~(CU_CHINFO_WRAP | CU_CHINFO_SMALLCAPS_CHECK);
 702         }
 703
 704         for (i = 0; i <= slen; i++) {
 705 makebreak:
 706                 /* Characters in the list */
 707                 info = &custrinfo[i];
 708                 ascii = mem[i];
 709                 if (info->flag & CU_CHINFO_SMALLCAPS) {
 710                         ascii = towupper(ascii);
 711                         if (mem[i] != ascii) {
 712                                 info->flag |= CU_CHINFO_SMALLCAPS_CHECK;
 713                         }
 714                 }
 715
 716                 vfont = which_vfont(cu, info);
 717
 718                 if (vfont == NULL) break;
 719
 720                 if (vfont != oldvfont) {
 721                         vfd = vfont_get_data(bmain, vfont);
 722                         oldvfont = vfont;
 723                 }
 724
 725                 /* VFont Data for VFont couldn't be found */
 726                 if (!vfd) {
 727                         MEM_freeN(chartransdata);
 728                         chartransdata = NULL;
 729                         MEM_freeN(lineinfo);
 730                         goto finally;
 731                 }
 732
 733                 if (!ELEM(ascii, '\n', '\0')) {
 734                         BLI_rw_mutex_lock(&vfont_rwlock, THREAD_LOCK_READ);
 735                         che = find_vfont_char(vfd, ascii);
 736                         BLI_rw_mutex_unlock(&vfont_rwlock);
 737
 738                         /*
 739                          * The character wasn't in the current curve base so load it
 740                          * But if the font is built-in then do not try loading since
 741                          * whole font is in the memory already
 742                          */
 743                         if (che == NULL && BKE_vfont_is_builtin(vfont) == false) {
 744                                 BLI_rw_mutex_lock(&vfont_rwlock, THREAD_LOCK_WRITE);
 745                                 /* Check it once again, char might have been already load
 746                                  * between previous BLI_rw_mutex_unlock() and this BLI_rw_mutex_lock().
 747                                  *
 748                                  * Such a check should not be a bottleneck since it wouldn't
 749                                  * happen often once all the chars are load.
 750                                  */
 751                                 if ((che = find_vfont_char(vfd, ascii)) == NULL) {
 752                                         che = BLI_vfontchar_from_freetypefont(vfont, ascii);
 753                                 }
 754                                 BLI_rw_mutex_unlock(&vfont_rwlock);
 755                         }
 756                 }
 757                 else {
 758                         che = NULL;
 759                 }
 760
 761                 twidth = char_width(cu, che, info);
 762
 763                 /* Calculate positions */
 764                 if ((tb_scale.w != 0.0f) &&
 765                     (ct->dobreak == 0) &&
 766                     (((xof - tb_scale.x) + twidth) > xof_scale + tb_scale.w))
 767                 {
 768                         //              fprintf(stderr, "linewidth exceeded: %c%c%c...\n", mem[i], mem[i+1], mem[i+2]);
 769                         for (j = i; j && (mem[j] != '\n') && (chartransdata[j].dobreak == 0); j--) {
 770                                 if (mem[j] == ' ' || mem[j] == '-') {
 771                                         ct -= (i - (j - 1));
 772                                         cnr -= (i - (j - 1));
 773                                         if (mem[j] == ' ') wsnr--;
 774                                         if (mem[j] == '-') wsnr++;
 775                                         i = j - 1;
 776                                         xof = ct->xof;
 777                                         ct[1].dobreak = 1;
 778                                         custrinfo[i + 1].flag |= CU_CHINFO_WRAP;
 779                                         goto makebreak;
 780                                 }
 781                                 if (chartransdata[j].dobreak) {
 782                                         //                              fprintf(stderr, "word too long: %c%c%c...\n", mem[j], mem[j+1], mem[j+2]);
 783                                         ct->dobreak = 1;
 784                                         custrinfo[i + 1].flag |= CU_CHINFO_WRAP;
 785                                         ct -= 1;
 786                                         cnr -= 1;
 787                                         i--;
 788                                         xof = ct->xof;
 789                                         goto makebreak;
 790                                 }
 791                         }
 792                 }
 793
 794                 if (ascii == '\n' || ascii == 0 || ct->dobreak) {
 795                         ct->xof = xof;
 796                         ct->yof = yof;
 797                         ct->linenr = lnr;
 798                         ct->charnr = cnr;
 799
 800                         yof -= linedist;
 801
 802                         lineinfo[lnr].x_min     = (xof - xtrax) - tb_scale.x;
 803                         lineinfo[lnr].x_max     = tb_scale.w;
 804                         lineinfo[lnr].char_nr   = cnr;
 805                         lineinfo[lnr].wspace_nr = wsnr;
 806
 807                         CLAMP_MIN(maxlen, lineinfo[lnr].x_min);
 808
 809                         if ((tb_scale.h != 0.0f) &&
 810                             (cu->totbox > (curbox + 1)) &&
 811                             ((-(yof - tb_scale.y)) > (tb_scale.h - linedist) - yof_scale))
 812                         {
 813                                 maxlen = 0;
 814                                 curbox++;
 815
 816                                 textbox_scale(&tb_scale, &cu->tb[curbox], 1.0f / cu->fsize);
 817
 818                                 yof = MARGIN_Y_MIN;
 819                         }
 820
 821                         /* XXX, has been unused for years, need to check if this is useful, r4613 r5282 - campbell */
 822 #if 0
 823                         if (ascii == '\n')
 824                                 xof = xof_scale;
 825                         else
 826                                 xof = MARGIN_X_MIN;
 827 #else
 828                         xof = MARGIN_X_MIN;
 829 #endif
 830                         lnr++;
 831                         cnr = 0;
 832                         wsnr = 0;
 833                 }
 834                 else if (ascii == 9) {    /* TAB */
 835                         float tabfac;
 836
 837                         ct->xof = xof;
 838                         ct->yof = yof;
 839                         ct->linenr = lnr;
 840                         ct->charnr = cnr++;
 841
 842                         tabfac = (xof - MARGIN_X_MIN + 0.01f);
 843                         tabfac = 2.0f * ceilf(tabfac / 2.0f);
 844                         xof = MARGIN_X_MIN + tabfac;
 845                 }
 846                 else {
 847                         EditFontSelBox *sb = NULL;
 848                         float wsfac;
 849
 850                         ct->xof = xof;
 851                         ct->yof = yof;
 852                         ct->linenr = lnr;
 853                         ct->charnr = cnr++;
 854
 855                         if (selboxes && (i >= selstart) && (i <= selend)) {
 856                                 sb = &selboxes[i - selstart];
 857                                 sb->y = yof * cu->fsize - linedist * cu->fsize * 0.1f;
 858                                 sb->h = linedist * cu->fsize;
 859                                 sb->w = xof * cu->fsize;
 860                         }
 861
 862                         if (ascii == 32) {
 863                                 wsfac = cu->wordspace;
 864                                 wsnr++;
 865                         }
 866                         else {
 867                                 wsfac = 1.0f;
 868                         }
 869
 870                         /* Set the width of the character */
 871                         twidth = char_width(cu, che, info);
 872
 873                         xof += (twidth * wsfac * (1.0f + (info->kern / 40.0f)) ) + xtrax;
 874
 875                         if (sb) {
 876                                 sb->w = (xof * cu->fsize) - sb->w;
 877                         }
 878                 }
 879                 ct++;
 880         }
 881
 882         cu->lines = 1;
 883         for (i = 0; i <= slen; i++) {
 884                 ascii = mem[i];
 885                 ct = &chartransdata[i];
 886                 if (ascii == '\n' || ct->dobreak) cu->lines++;
 887         }
 888
 889         /* linedata is now: width of line */
 890
 891         if (cu->spacemode != CU_LEFT) {
 892                 ct = chartransdata;
 893
 894                 if (cu->spacemode == CU_RIGHT) {
 895                         struct TempLineInfo *li;
 896
 897                         for (i = 0, li = lineinfo; i < lnr; i++, li++) {
 898                                 li->x_min = (li->x_max - li->x_min) + xof_scale;
 899                         }
 900
 901                         for (i = 0; i <= slen; i++) {
 902                                 ct->xof += lineinfo[ct->linenr].x_min;
 903                                 ct++;
 904                         }
 905                 }
 906                 else if (cu->spacemode == CU_MIDDLE) {
 907                         struct TempLineInfo *li;
 908
 909                         for (i = 0, li = lineinfo; i < lnr; i++, li++) {
 910                                 li->x_min = ((li->x_max - li->x_min) + xof_scale) / 2.0f;
 911                         }
 912
 913                         for (i = 0; i <= slen; i++) {
 914                                 ct->xof += lineinfo[ct->linenr].x_min;
 915                                 ct++;
 916                         }
 917                 }
 918                 else if ((cu->spacemode == CU_FLUSH) && use_textbox) {
 919                         struct TempLineInfo *li;
 920
 921                         for (i = 0, li = lineinfo; i < lnr; i++, li++) {
 922                                 li->x_min = ((li->x_max - li->x_min) + xof_scale);
 923
 924                                 if (li->char_nr > 1) {
 925                                         li->x_min /= (float)(li->char_nr - 1);
 926                                 }
 927                         }
 928                         for (i = 0; i <= slen; i++) {
 929                                 for (j = i; (!ELEM(mem[j], '\0', '\n')) && (chartransdata[j].dobreak == 0) && (j < slen); j++) {
 930                                         /* do nothing */
 931                                 }
 932
 933 //                              if ((mem[j] != '\n') && (mem[j])) {
 934                                 ct->xof += ct->charnr * lineinfo[ct->linenr].x_min;
 935 //                              }
 936                                 ct++;
 937                         }
 938                 }
 939                 else if ((cu->spacemode == CU_JUSTIFY) && use_textbox) {
 940                         float curofs = 0.0f;
 941                         for (i = 0; i <= slen; i++) {
 942                                 for (j = i;
 943                                      (mem[j]) && (mem[j] != '\n') && (chartransdata[j].dobreak == 0) && (j < slen);
 944                                      j++)
 945                                 {
 946                                         /* pass */
 947                                 }
 948
 949                                 if ((mem[j] != '\n') &&
 950                                     ((chartransdata[j].dobreak != 0)))
 951                                 {
 952                                         if (mem[i] == ' ') {
 953                                                 struct TempLineInfo *li;
 954
 955                                                 li = &lineinfo[ct->linenr];
 956                                                 curofs += ((li->x_max - li->x_min) + xof_scale) / (float)li->wspace_nr;
 957                                         }
 958                                         ct->xof += curofs;
 959                                 }
 960                                 if (mem[i] == '\n' || chartransdata[i].dobreak) curofs = 0;
 961                                 ct++;
 962                         }
 963                 }
 964         }
 965
 966         MEM_freeN(lineinfo);
 967
 968         /* TEXT ON CURVE */
 969         /* Note: Only OB_CURVE objects could have a path  */
 970         if (cu->textoncurve && cu->textoncurve->type == OB_CURVE) {
 971                 BLI_assert(cu->textoncurve->curve_cache != NULL);
 972                 if (cu->textoncurve->curve_cache->path) {
 973                         float distfac, imat[4][4], imat3[3][3], cmat[3][3];
 974                         float minx, maxx, miny, maxy;
 975                         float timeofs, sizefac;
 976
 977                         invert_m4_m4(imat, ob->obmat);
 978                         copy_m3_m4(imat3, imat);
 979
 980                         copy_m3_m4(cmat, cu->textoncurve->obmat);
 981                         mul_m3_m3m3(cmat, cmat, imat3);
 982                         sizefac = normalize_v3(cmat[0]) / cu->fsize;
 983
 984                         minx = miny = 1.0e20f;
 985                         maxx = maxy = -1.0e20f;
 986                         ct = chartransdata;
 987                         for (i = 0; i <= slen; i++, ct++) {
 988                                 if (minx > ct->xof) minx = ct->xof;
 989                                 if (maxx < ct->xof) maxx = ct->xof;
 990                                 if (miny > ct->yof) miny = ct->yof;
 991                                 if (maxy < ct->yof) maxy = ct->yof;
 992                         }
 993
 994                         /* we put the x-coordinaat exact at the curve, the y is rotated */
 995
 996                         /* length correction */
 997                         distfac = sizefac * cu->textoncurve->curve_cache->path->totdist / (maxx - minx);
 998                         timeofs = 0.0f;
 999
1000                         if (distfac > 1.0f) {
1001                                 /* path longer than text: spacemode involves */
1002                                 distfac = 1.0f / distfac;
1003
1004                                 if (cu->spacemode == CU_RIGHT) {
1005                                         timeofs = 1.0f - distfac;
1006                                 }
1007                                 else if (cu->spacemode == CU_MIDDLE) {
1008                                         timeofs = (1.0f - distfac) / 2.0f;
1009                                 }
1010                                 else if (cu->spacemode == CU_FLUSH) {
1011                                         distfac = 1.0f;
1012                                 }
1013                         }
1014                         else {
1015                                 distfac = 1.0;
1016                         }
1017
1018                         distfac /= (maxx - minx);
1019
1020                         timeofs += distfac * cu->xof;  /* not cyclic */
1021
1022                         ct = chartransdata;
1023                         for (i = 0; i <= slen; i++, ct++) {
1024                                 float ctime, dtime, vec[4], tvec[4], rotvec[3];
1025                                 float si, co;
1026
1027                                 /* rotate around center character */
1028                                 info = &custrinfo[i];
1029                                 ascii = mem[i];
1030                                 if (info->flag & CU_CHINFO_SMALLCAPS_CHECK) {
1031                                         ascii = towupper(ascii);
1032                                 }
1033
1034                                 che = find_vfont_char(vfd, ascii);
1035
1036                                 twidth = char_width(cu, che, info);
1037
1038                                 dtime = distfac * 0.5f * twidth;
1039
1040                                 ctime = timeofs + distfac * (ct->xof - minx);
1041                                 CLAMP(ctime, 0.0f, 1.0f);
1042
1043                                 /* calc the right loc AND the right rot separately */
1044                                 /* vec, tvec need 4 items */
1045                                 where_on_path(cu->textoncurve, ctime, vec, tvec, NULL, NULL, NULL);
1046                                 where_on_path(cu->textoncurve, ctime + dtime, tvec, rotvec, NULL, NULL, NULL);
1047
1048                                 mul_v3_fl(vec, sizefac);
1049
1050                                 ct->rot = (float)M_PI - atan2f(rotvec[1], rotvec[0]);
1051
1052                                 si = sinf(ct->rot);
1053                                 co = cosf(ct->rot);
1054
1055                                 yof = ct->yof;
1056
1057                                 ct->xof = vec[0] + si * yof;
1058                                 ct->yof = vec[1] + co * yof;
1059
1060                                 if (selboxes && (i >= selstart) && (i <= selend)) {
1061                                         EditFontSelBox *sb;
1062                                         sb = &selboxes[i - selstart];
1063                                         sb->rot = -ct->rot;
1064                                 }
1065
1066                         }
1067                 }
1068         }
1069
1070         if (selboxes) {
1071                 ct = chartransdata;
1072                 for (i = 0; i <= selend; i++, ct++) {
1073                         if (i >= selstart) {
1074                                 selboxes[i - selstart].x = ct->xof * cu->fsize;
1075                                 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                 ct = &chartransdata[ef->pos];
1082
1083                 if ((mode == FO_CURSUP || mode == FO_PAGEUP) && ct->linenr == 0) {
1084                         /* pass */
1085                 }
1086                 else if ((mode == FO_CURSDOWN || mode == FO_PAGEDOWN) && ct->linenr == lnr) {
1087                         /* pass */
1088                 }
1089                 else {
1090                         switch (mode) {
1091                                 case FO_CURSUP:     lnr = ct->linenr - 1; break;
1092                                 case FO_CURSDOWN:   lnr = ct->linenr + 1; break;
1093                                 case FO_PAGEUP:     lnr = ct->linenr - 10; break;
1094                                 case FO_PAGEDOWN:   lnr = ct->linenr + 10; break;
1095                         }
1096                         cnr = ct->charnr;
1097                         /* seek for char with lnr en cnr */
1098                         ef->pos = 0;
1099                         ct = chartransdata;
1100                         for (i = 0; i < slen; i++) {
1101                                 if (ct->linenr == lnr) {
1102                                         if ((ct->charnr == cnr) || ((ct + 1)->charnr == 0)) {
1103                                                 break;
1104                                         }
1105                                 }
1106                                 else if (ct->linenr > lnr) {
1107                                         break;
1108                                 }
1109                                 ef->pos++;
1110                                 ct++;
1111                         }
1112                 }
1113         }
1114
1115         /* cursor first */
1116         if (ef) {
1117                 float si, co;
1118
1119                 ct = &chartransdata[ef->pos];
1120                 si = sinf(ct->rot);
1121                 co = cosf(ct->rot);
1122
1123                 f = ef->textcurs[0];
1124
1125                 f[0] = cu->fsize * (-0.1f * co + ct->xof);
1126                 f[1] = cu->fsize * ( 0.1f * si + ct->yof);
1127
1128                 f[2] = cu->fsize * ( 0.1f * co + ct->xof);
1129                 f[3] = cu->fsize * (-0.1f * si + ct->yof);
1130
1131                 f[4] = cu->fsize * ( 0.1f * co + 0.8f * si + ct->xof);
1132                 f[5] = cu->fsize * (-0.1f * si + 0.8f * co + ct->yof);
1133
1134                 f[6] = cu->fsize * (-0.1f * co + 0.8f * si + ct->xof);
1135                 f[7] = cu->fsize * ( 0.1f * si + 0.8f * co + ct->yof);
1136
1137         }
1138
1139         if (mode == FO_SELCHANGE) {
1140                 MEM_freeN(chartransdata);
1141                 chartransdata = NULL;
1142                 goto finally;
1143         }
1144
1145         if (mode == FO_EDIT) {
1146                 /* make nurbdata */
1147                 BKE_nurbList_free(r_nubase);
1148
1149                 ct = chartransdata;
1150                 for (i = 0; i < slen; i++) {
1151                         unsigned int cha = (unsigned int) mem[i];
1152                         info = &(custrinfo[i]);
1153
1154                         if (info->flag & CU_CHINFO_SMALLCAPS_CHECK) {
1155                                 cha = towupper(cha);
1156                         }
1157
1158                         if (info->mat_nr > (ob->totcol)) {
1159                                 /* printf("Error: Illegal material index (%d) in text object, setting to 0\n", info->mat_nr); */
1160                                 info->mat_nr = 0;
1161                         }
1162                         /* We do not want to see any character for \n or \r */
1163                         if (cha != '\n')
1164                                 buildchar(bmain, cu, r_nubase, cha, info, ct->xof, ct->yof, ct->rot, i);
1165
1166                         if ((info->flag & CU_CHINFO_UNDERLINE) && (cha != '\n')) {
1167                                 float ulwidth, uloverlap = 0.0f;
1168                                 rctf rect;
1169
1170                                 if ((i < (slen - 1)) && (mem[i + 1] != '\n') &&
1171                                     ((mem[i + 1] != ' ') || (custrinfo[i + 1].flag & CU_CHINFO_UNDERLINE)) &&
1172                                     ((custrinfo[i + 1].flag & CU_CHINFO_WRAP) == 0))
1173                                 {
1174                                         uloverlap = xtrax + 0.1f;
1175                                 }
1176                                 /* Find the character, the characters has to be in the memory already
1177                                  * since character checking has been done earlier already. */
1178                                 che = find_vfont_char(vfd, cha);
1179
1180                                 twidth = char_width(cu, che, info);
1181                                 ulwidth = (twidth * (1.0f + (info->kern / 40.0f))) + uloverlap;
1182
1183                                 rect.xmin = ct->xof;
1184                                 rect.xmax = rect.xmin + ulwidth;
1185
1186                                 rect.ymin = ct->yof;
1187                                 rect.ymax = rect.ymin - cu->ulheight;
1188
1189                                 build_underline(cu, r_nubase,
1190                                                 &rect, cu->ulpos - 0.05f,
1191                                                 ct->rot, i, info->mat_nr);
1192                         }
1193                         ct++;
1194                 }
1195         }
1196
1197         ok = true;
1198
1199 finally:
1200
1201         {
1202                 if (r_text) {
1203                         *r_text = mem;
1204                         *r_text_len = slen;
1205                         *r_text_free = (ef == NULL);
1206                 }
1207                 else {
1208                         if (ef == NULL) {
1209                                 MEM_freeN((void *)mem);
1210                         }
1211                 }
1212         }
1213
1214         if (chartransdata) {
1215                 if (ok && r_chartransdata) {
1216                         *r_chartransdata = chartransdata;
1217                 }
1218                 else {
1219                         MEM_freeN(chartransdata);
1220                 }
1221         }
1222
1223         return ok;
1224
1225 #undef MARGIN_X_MIN
1226 #undef MARGIN_Y_MIN
1227 }
1228
1229
1230 bool BKE_vfont_to_curve_nubase(Main *bmain, Object *ob, int mode, ListBase *r_nubase)
1231 {
1232         BLI_assert(ob->type == OB_FONT);
1233
1234         return BKE_vfont_to_curve_ex(bmain, ob, mode, r_nubase,
1235                                      NULL, NULL, NULL, NULL);
1236 }
1237
1238 bool BKE_vfont_to_curve(Main *bmain, Object *ob, int mode)
1239 {
1240         Curve *cu = ob->data;
1241
1242         return BKE_vfont_to_curve_ex(bmain, ob, mode, &cu->nurb, NULL, NULL, NULL, NULL);
1243 }