libmenu/menu.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer 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 along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include "config.h"
  20 #include "mp_msg.h"
  21 #include "help_mp.h"
  22
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25 #include <string.h>
  26 #include <fcntl.h>
  27 #include <unistd.h>
  28
  29 #include "libvo/osd.h"
  30 #include "libvo/font_load.h"
  31 #include "libvo/sub.h"
  32 #include "osdep/keycodes.h"
  33 #include "asxparser.h"
  34 #include "stream/stream.h"
  35 #include "input/input.h"
  36
  37 #include "libmpcodecs/img_format.h"
  38 #include "libmpcodecs/mp_image.h"
  39 #include "m_option.h"
  40 #include "m_struct.h"
  41 #include "menu.h"
  42
  43 extern menu_info_t menu_info_cmdlist;
  44 extern menu_info_t menu_info_chapsel;
  45 extern menu_info_t menu_info_pt;
  46 extern menu_info_t menu_info_filesel;
  47 extern menu_info_t menu_info_txt;
  48 extern menu_info_t menu_info_console;
  49 extern menu_info_t menu_info_pref;
  50 extern menu_info_t menu_info_dvbsel;
  51
  52
  53 menu_info_t* menu_info_list[] = {
  54   &menu_info_pt,
  55   &menu_info_cmdlist,
  56   &menu_info_chapsel,
  57   &menu_info_filesel,
  58   &menu_info_txt,
  59   &menu_info_console,
  60 #ifdef CONFIG_DVBIN
  61   &menu_info_dvbsel,
  62 #endif
  63   &menu_info_pref,
  64   NULL
  65 };
  66
  67 typedef struct key_cmd_s {
  68   int key;
  69   char *cmd;
  70 } key_cmd_t;
  71
  72 typedef struct menu_cmd_bindings_s {
  73   char *name;
  74   key_cmd_t *bindings;
  75   int binding_num;
  76   struct menu_cmd_bindings_s *parent;
  77 } menu_cmd_bindings_t;
  78
  79 struct menu_def_st {
  80   char* name;
  81   menu_info_t* type;
  82   void* cfg;
  83   char* args;
  84 };
  85
  86 double menu_mouse_x = -1.0;
  87 double menu_mouse_y = -1.0;
  88 int menu_mouse_pos_updated = 0;
  89
  90 static struct MPContext *menu_ctx = NULL;
  91 static menu_def_t* menu_list = NULL;
  92 static int menu_count = 0;
  93 static menu_cmd_bindings_t *cmd_bindings = NULL;
  94 static int cmd_bindings_num = 0;
  95
  96
  97 menu_cmd_bindings_t *get_cmd_bindings(const char *name) {
  98   int i;
  99   for (i = 0; i < cmd_bindings_num; ++i)
 100     if (!strcasecmp(cmd_bindings[i].name, name))
 101       return &cmd_bindings[i];
 102   return NULL;
 103 }
 104
 105 static int menu_parse_config(char* buffer) {
 106   char *element,*body, **attribs, *name;
 107   menu_info_t* minfo = NULL;
 108   int r,i;
 109   ASX_Parser_t* parser = asx_parser_new();
 110
 111   while(1) {
 112     r = asx_get_element(parser,&buffer,&element,&body,&attribs);
 113     if(r < 0) {
 114       mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_SyntaxErrorAtLine,parser->line);
 115       asx_parser_free(parser);
 116       return 0;
 117     } else if(r == 0) {
 118       asx_parser_free(parser);
 119       return 1;
 120     }
 121     // Has it a name ?
 122     name = asx_get_attrib("name",attribs);
 123     if(!name) {
 124       mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_MenuDefinitionsNeedANameAttrib,parser->line);
 125       free(element);
 126       if(body) free(body);
 127       asx_free_attribs(attribs);
 128       continue;
 129     }
 130
 131     if (!strcasecmp(element, "keybindings")) {
 132       menu_cmd_bindings_t *bindings = cmd_bindings;
 133       char *parent_bindings;
 134       cmd_bindings = realloc(cmd_bindings,
 135                              (cmd_bindings_num+1)*sizeof(menu_cmd_bindings_t));
 136       for (i = 0; i < cmd_bindings_num; ++i)
 137         if (cmd_bindings[i].parent)
 138           cmd_bindings[i].parent = cmd_bindings[i].parent-bindings+cmd_bindings;
 139       bindings = &cmd_bindings[cmd_bindings_num];
 140       memset(bindings, 0, sizeof(menu_cmd_bindings_t));
 141       bindings->name = name;
 142       parent_bindings = asx_get_attrib("parent",attribs);
 143       if (parent_bindings) {
 144         bindings->parent = get_cmd_bindings(parent_bindings);
 145         free(parent_bindings);
 146       }
 147       free(element);
 148       asx_free_attribs(attribs);
 149       if (body) {
 150         char *bd = body;
 151         char *b, *key, *cmd;
 152         int keycode;
 153         for(;;) {
 154           r = asx_get_element(parser,&bd,&element,&b,&attribs);
 155           if(r < 0) {
 156             mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_SyntaxErrorAtLine,
 157                    parser->line);
 158             free(body);
 159             asx_parser_free(parser);
 160             return 0;
 161           }
 162           if(r == 0)
 163             break;
 164           if (!strcasecmp(element, "binding")) {
 165             key = asx_get_attrib("key",attribs);
 166             cmd = asx_get_attrib("cmd",attribs);
 167             if (key && (keycode = mp_input_get_key_from_name(key)) >= 0) {
 168               keycode &= ~MP_NO_REPEAT_KEY;
 169               mp_msg(MSGT_GLOBAL,MSGL_V,
 170                      "[libmenu] got keybinding element %d %s=>[%s].\n",
 171                      keycode, key, cmd ? cmd : "");
 172               bindings->bindings = realloc(bindings->bindings,
 173                                    (bindings->binding_num+1)*sizeof(key_cmd_t));
 174               bindings->bindings[bindings->binding_num].key = keycode;
 175               bindings->bindings[bindings->binding_num].cmd = cmd;
 176               ++bindings->binding_num;
 177             }
 178             else
 179               free(cmd);
 180             free(key);
 181           }
 182           free(element);
 183           asx_free_attribs(attribs);
 184           free(b);
 185         }
 186         free(body);
 187       }
 188       ++cmd_bindings_num;
 189       continue;
 190     }
 191     // Try to find this menu type in our list
 192     for(i = 0, minfo = NULL ; menu_info_list[i] ; i++) {
 193       if(strcasecmp(element,menu_info_list[i]->name) == 0) {
 194         minfo = menu_info_list[i];
 195         break;
 196       }
 197     }
 198     // Got it : add this to our list
 199     if(minfo) {
 200       menu_list = realloc(menu_list,(menu_count+2)*sizeof(menu_def_t));
 201       menu_list[menu_count].name = name;
 202       menu_list[menu_count].type = minfo;
 203       menu_list[menu_count].cfg = m_struct_alloc(&minfo->priv_st);
 204       menu_list[menu_count].args = body;
 205       // Setup the attribs
 206       for(i = 0 ; attribs[2*i] ; i++) {
 207         if(strcasecmp(attribs[2*i],"name") == 0) continue;
 208         if(!m_struct_set(&minfo->priv_st,menu_list[menu_count].cfg,attribs[2*i], attribs[2*i+1]))
 209           mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_BadAttrib,attribs[2*i],attribs[2*i+1],
 210                  name,parser->line);
 211       }
 212       menu_count++;
 213       memset(&menu_list[menu_count],0,sizeof(menu_def_t));
 214     } else {
 215       mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_UnknownMenuType,element,parser->line);
 216       free(name);
 217       if(body) free(body);
 218     }
 219
 220     free(element);
 221     asx_free_attribs(attribs);
 222   }
 223
 224 }
 225
 226
 227 /// This will build the menu_defs list from the cfg file
 228 #define BUF_STEP 1024
 229 #define BUF_MIN 128
 230 #define BUF_MAX BUF_STEP*1024
 231 int menu_init(struct MPContext *mpctx, char* cfg_file) {
 232   char* buffer = NULL;
 233   int bl = BUF_STEP, br = 0;
 234   int f, fd;
 235 #ifndef CONFIG_FREETYPE
 236   if(vo_font == NULL)
 237     return 0;
 238 #endif
 239   fd = open(cfg_file, O_RDONLY);
 240   if(fd < 0) {
 241     mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_CantOpenConfigFile,cfg_file);
 242     return 0;
 243   }
 244   buffer = malloc(bl);
 245   while(1) {
 246     int r;
 247     if(bl - br < BUF_MIN) {
 248       if(bl >= BUF_MAX) {
 249         mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_ConfigFileIsTooBig,BUF_MAX/1024);
 250         close(fd);
 251         free(buffer);
 252         return 0;
 253       }
 254       bl += BUF_STEP;
 255       buffer = realloc(buffer,bl);
 256     }
 257     r = read(fd,buffer+br,bl-br);
 258     if(r == 0) break;
 259     br += r;
 260   }
 261   if(!br) {
 262     mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_ConfigFileIsEmpty);
 263     return 0;
 264   }
 265   buffer[br-1] = '\0';
 266
 267   close(fd);
 268
 269   menu_ctx = mpctx;
 270   f = menu_parse_config(buffer);
 271   free(buffer);
 272   return f;
 273 }
 274
 275 // Destroy all this stuff
 276 void menu_uninit(void) {
 277   int i;
 278   for(i = 0 ; menu_list && menu_list[i].name ; i++) {
 279     free(menu_list[i].name);
 280     m_struct_free(&menu_list[i].type->priv_st,menu_list[i].cfg);
 281     if(menu_list[i].args) free(menu_list[i].args);
 282   }
 283   free(menu_list);
 284   menu_count = 0;
 285   for (i = 0; i < cmd_bindings_num; ++i) {
 286     free(cmd_bindings[i].name);
 287     while(cmd_bindings[i].binding_num > 0)
 288       free(cmd_bindings[i].bindings[--cmd_bindings[i].binding_num].cmd);
 289     free(cmd_bindings[i].bindings);
 290   }
 291   free(cmd_bindings);
 292 }
 293
 294 /// Default read_key function
 295 int menu_dflt_read_key(menu_t* menu,int cmd) {
 296   int i;
 297   menu_cmd_bindings_t *bindings = get_cmd_bindings(menu->type->name);
 298   if (!bindings)
 299     bindings = get_cmd_bindings(menu->type->type->name);
 300   if (!bindings)
 301     bindings = get_cmd_bindings("default");
 302   while (bindings) {
 303     for (i = 0; i < bindings->binding_num; ++i) {
 304       if (bindings->bindings[i].key == cmd) {
 305         if (bindings->bindings[i].cmd)
 306           mp_input_parse_and_queue_cmds(bindings->bindings[i].cmd);
 307         return 1;
 308       }
 309     }
 310     bindings = bindings->parent;
 311   }
 312   return 0;
 313 }
 314
 315 menu_t* menu_open(char *name) {
 316   menu_t* m;
 317   int i;
 318
 319   for(i = 0 ; menu_list[i].name != NULL ; i++) {
 320     if(strcmp(name,menu_list[i].name) == 0)
 321       break;
 322   }
 323   if(menu_list[i].name == NULL) {
 324     mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_MenuNotFound,name);
 325     return NULL;
 326   }
 327   m = calloc(1,sizeof(menu_t));
 328   m->priv_st = &(menu_list[i].type->priv_st);
 329   m->priv = m_struct_copy(m->priv_st,menu_list[i].cfg);
 330   m->ctx = menu_ctx;
 331   m->type = &menu_list[i];
 332   if(menu_list[i].type->open(m,menu_list[i].args))
 333     return m;
 334   if(m->priv)
 335     m_struct_free(m->priv_st,m->priv);
 336   free(m);
 337   mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_MenuInitFailed,name);
 338   return NULL;
 339 }
 340
 341 void menu_draw(menu_t* menu,mp_image_t* mpi) {
 342   if(menu->show && menu->draw)
 343     menu->draw(menu,mpi);
 344 }
 345
 346 void menu_update_mouse_pos(double x, double y) {
 347   menu_mouse_x = x;
 348   menu_mouse_y = y;
 349   menu_mouse_pos_updated = 1;
 350 }
 351
 352 void menu_read_cmd(menu_t* menu,int cmd) {
 353   if(menu->read_cmd)
 354     menu->read_cmd(menu,cmd);
 355 }
 356
 357 void menu_close(menu_t* menu) {
 358   if(menu->close)
 359     menu->close(menu);
 360   if(menu->priv)
 361     m_struct_free(menu->priv_st,menu->priv);
 362   free(menu);
 363 }
 364
 365 int menu_read_key(menu_t* menu,int cmd) {
 366   if(menu->read_key)
 367     return menu->read_key(menu,cmd);
 368   else
 369     return menu_dflt_read_key(menu,cmd);
 370 }
 371
 372 ///////////////////////////// Helpers ////////////////////////////////////
 373
 374 typedef void (*draw_alpha_f)(int w,int h, unsigned char* src, unsigned char *srca, int srcstride, unsigned char* dstbase,int dststride);
 375
 376 inline static draw_alpha_f get_draw_alpha(uint32_t fmt) {
 377   switch(fmt) {
 378   case IMGFMT_BGR15:
 379   case IMGFMT_RGB15:
 380     return vo_draw_alpha_rgb15;
 381   case IMGFMT_BGR16:
 382   case IMGFMT_RGB16:
 383     return vo_draw_alpha_rgb16;
 384   case IMGFMT_BGR24:
 385   case IMGFMT_RGB24:
 386     return vo_draw_alpha_rgb24;
 387   case IMGFMT_BGR32:
 388   case IMGFMT_RGB32:
 389     return vo_draw_alpha_rgb32;
 390   case IMGFMT_YV12:
 391   case IMGFMT_I420:
 392   case IMGFMT_IYUV:
 393   case IMGFMT_YVU9:
 394   case IMGFMT_IF09:
 395   case IMGFMT_Y800:
 396   case IMGFMT_Y8:
 397     return vo_draw_alpha_yv12;
 398   case IMGFMT_YUY2:
 399     return vo_draw_alpha_yuy2;
 400   case IMGFMT_UYVY:
 401     return vo_draw_alpha_uyvy;
 402   }
 403
 404   return NULL;
 405 }
 406
 407 // return the real height of a char:
 408 static inline int get_height(int c,int h){
 409     int font;
 410     if ((font=vo_font->font[c])>=0)
 411         if(h<vo_font->pic_a[font]->h) h=vo_font->pic_a[font]->h;
 412     return h;
 413 }
 414
 415 static void render_txt(char *txt)
 416 {
 417   while (*txt) {
 418     int c = utf8_get_char((const char**)&txt);
 419     render_one_glyph(vo_font, c);
 420   }
 421 }
 422
 423 #ifdef CONFIG_FRIBIDI
 424 #include <fribidi/fribidi.h>
 425 #include "libavutil/common.h"
 426 char *menu_fribidi_charset = NULL;
 427 int menu_flip_hebrew = 0;
 428 int menu_fribidi_flip_commas = 0;
 429
 430 static char *menu_fribidi(char *txt)
 431 {
 432   static int char_set_num = -1;
 433   static FriBidiChar *logical, *visual;
 434   static size_t buffer_size = 1024;
 435   static char *outputstr;
 436
 437   FriBidiCharType base;
 438   fribidi_boolean log2vis;
 439   size_t len;
 440
 441   if (menu_flip_hebrew) {
 442     len = strlen(txt);
 443     if (char_set_num == -1) {
 444       fribidi_set_mirroring (1);
 445       fribidi_set_reorder_nsm (0);
 446       char_set_num = fribidi_parse_charset("UTF-8");
 447       buffer_size = FFMAX(1024,len+1);
 448       logical = malloc(buffer_size);
 449       visual = malloc(buffer_size);
 450       outputstr = malloc(buffer_size);
 451     } else if (len+1 > buffer_size) {
 452       buffer_size = len+1;
 453       logical = realloc(logical, buffer_size);
 454       visual = realloc(visual, buffer_size);
 455       outputstr = realloc(outputstr, buffer_size);
 456     }
 457     len = fribidi_charset_to_unicode (char_set_num, txt, len, logical);
 458     base = menu_fribidi_flip_commas?FRIBIDI_TYPE_ON:FRIBIDI_TYPE_L;
 459     log2vis = fribidi_log2vis (logical, len, &base, visual, NULL, NULL, NULL);
 460     if (log2vis) {
 461       len = fribidi_remove_bidi_marks (visual, len, NULL, NULL, NULL);
 462       fribidi_unicode_to_charset (char_set_num, visual, len, outputstr);
 463       return outputstr;
 464     }
 465   }
 466   return txt;
 467 }
 468 #endif
 469
 470 void menu_draw_text(mp_image_t* mpi,char* txt, int x, int y) {
 471   draw_alpha_f draw_alpha = get_draw_alpha(mpi->imgfmt);
 472   int font;
 473
 474   if(!draw_alpha) {
 475     mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_UnsupportedOutformat);
 476     return;
 477   }
 478
 479 #ifdef CONFIG_FRIBIDI
 480   txt = menu_fribidi(txt);
 481 #endif
 482   render_txt(txt);
 483
 484   while (*txt) {
 485     int c=utf8_get_char((const char**)&txt);
 486     if ((font=vo_font->font[c])>=0 && (x + vo_font->width[c] <= mpi->w) && (y + vo_font->pic_a[font]->h <= mpi->h))
 487       draw_alpha(vo_font->width[c], vo_font->pic_a[font]->h,
 488                  vo_font->pic_b[font]->bmp+vo_font->start[c],
 489                  vo_font->pic_a[font]->bmp+vo_font->start[c],
 490                  vo_font->pic_a[font]->w,
 491                  mpi->planes[0] + y * mpi->stride[0] + x * (mpi->bpp>>3),
 492                  mpi->stride[0]);
 493     x+=vo_font->width[c]+vo_font->charspace;
 494   }
 495
 496 }
 497
 498 void menu_draw_text_full(mp_image_t* mpi,char* txt,
 499                          int x, int y,int w, int h,
 500                          int vspace, int warp, int align, int anchor) {
 501   int need_w,need_h;
 502   int sy, ymin, ymax;
 503   int sx, xmin, xmax, xmid, xrmin;
 504   int ll = 0;
 505   int font;
 506   draw_alpha_f draw_alpha = get_draw_alpha(mpi->imgfmt);
 507
 508   if(!draw_alpha) {
 509     mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_UnsupportedOutformat);
 510     return;
 511   }
 512
 513 #ifdef CONFIG_FRIBIDI
 514   txt = menu_fribidi(txt);
 515 #endif
 516   render_txt(txt);
 517
 518   if(x > mpi->w || y > mpi->h)
 519     return;
 520
 521   if(anchor & MENU_TEXT_VCENTER) {
 522     if(h <= 0) h = mpi->h;
 523     ymin = y - h/2;
 524     ymax = y + h/2;
 525   }  else if(anchor & MENU_TEXT_BOT) {
 526     if(h <= 0) h = mpi->h - y;
 527     ymin = y - h;
 528     ymax = y;
 529   } else {
 530     if(h <= 0) h = mpi->h - y;
 531     ymin = y;
 532     ymax = y + h;
 533   }
 534
 535   if(anchor & MENU_TEXT_HCENTER) {
 536     if(w <= 0) w = mpi->w;
 537     xmin = x - w/2;
 538     xmax = x + w/2;
 539   }  else if(anchor & MENU_TEXT_RIGHT) {
 540     if(w <= 0) w = mpi->w -x;
 541     xmin = x - w;
 542     xmax = x;
 543   } else {
 544     if(w <= 0) w = mpi->w -x;
 545     xmin = x;
 546     xmax = x + w;
 547   }
 548
 549   // How many space do we need to draw this ?
 550   menu_text_size(txt,w,vspace,warp,&need_w,&need_h);
 551
 552   // Find the first line
 553   if(align & MENU_TEXT_VCENTER)
 554     sy = ymin + ((h - need_h)/2);
 555   else if(align & MENU_TEXT_BOT)
 556     sy = ymax - need_h - 1;
 557   else
 558     sy = y;
 559
 560 #if 0
 561   // Find the first col
 562   if(align & MENU_TEXT_HCENTER)
 563     sx = xmin + ((w - need_w)/2);
 564   else if(align & MENU_TEXT_RIGHT)
 565     sx = xmax - need_w;
 566 #endif
 567
 568   xmid = xmin + (xmax - xmin) / 2;
 569   xrmin = xmin;
 570   // Clamp the bb to the mpi size
 571   if(ymin < 0) ymin = 0;
 572   if(xmin < 0) xmin = 0;
 573   if(ymax > mpi->h) ymax = mpi->h;
 574   if(xmax > mpi->w) xmax = mpi->w;
 575
 576   // Jump some the beginnig text if needed
 577   while(sy < ymin && *txt) {
 578     int c=utf8_get_char((const char**)&txt);
 579     if(c == '\n' || (warp && ll + vo_font->width[c] > w)) {
 580       ll = 0;
 581       sy += vo_font->height + vspace;
 582       if(c == '\n') continue;
 583     }
 584     ll += vo_font->width[c]+vo_font->charspace;
 585   }
 586   if(*txt == '\0') // Nothing left to draw
 587       return;
 588
 589   while(sy < ymax && *txt) {
 590     char* line_end = NULL;
 591     int n;
 592
 593     if(txt[0] == '\n') { // New line
 594       sy += vo_font->height + vspace;
 595       txt++;
 596       continue;
 597     }
 598
 599     // Get the length and end of this line
 600     for(n = 0, ll = 0 ; txt[n] != '\0' && txt[n] != '\n'  ; n++) {
 601       unsigned char c = txt[n];
 602       if(warp && ll + vo_font->width[c]  > w)  break;
 603       ll += vo_font->width[c]+vo_font->charspace;
 604     }
 605     line_end = &txt[n];
 606     ll -= vo_font->charspace;
 607
 608
 609     if(align & (MENU_TEXT_HCENTER|MENU_TEXT_RIGHT)) {
 610       // Too long line
 611       if(ll > xmax-xmin) {
 612         if(align & MENU_TEXT_HCENTER) {
 613           int mid = ll/2;
 614           // Find the middle point
 615           for(n--, ll = 0 ; n <= 0 ; n--) {
 616             ll += vo_font->width[(int)txt[n]]+vo_font->charspace;
 617             if(ll - vo_font->charspace > mid) break;
 618           }
 619           ll -= vo_font->charspace;
 620           sx = xmid + mid - ll;
 621         } else// MENU_TEXT_RIGHT)
 622           sx = xmax + vo_font->charspace;
 623
 624         // We are after the start point -> go back
 625         if(sx > xmin) {
 626           for(n-- ; n <= 0 ; n--) {
 627             unsigned char c = txt[n];
 628             if(sx - vo_font->width[c] - vo_font->charspace < xmin) break;
 629             sx -= vo_font->width[c]+vo_font->charspace;
 630           }
 631         } else { // We are before the start point -> go forward
 632           for( ; sx < xmin && (&txt[n]) != line_end ; n++) {
 633             unsigned char c = txt[n];
 634             sx += vo_font->width[c]+vo_font->charspace;
 635           }
 636         }
 637         txt = &txt[n]; // Jump to the new start char
 638       } else {
 639         if(align & MENU_TEXT_HCENTER)
 640           sx = xmid - ll/2;
 641         else
 642           sx = xmax - 1 - ll;
 643       }
 644     } else {
 645       for(sx = xrmin ;  sx < xmin && txt != line_end ; txt++) {
 646         unsigned char c = txt[n];
 647         sx += vo_font->width[c]+vo_font->charspace;
 648       }
 649     }
 650
 651     while(sx < xmax && txt != line_end) {
 652       int c=utf8_get_char((const char**)&txt);
 653       font = vo_font->font[c];
 654       if(font >= 0) {
 655         int cs = (vo_font->pic_a[font]->h - vo_font->height) / 2;
 656         if ((sx + vo_font->width[c] <= xmax) && (sy + vo_font->height <= ymax) )
 657           draw_alpha(vo_font->width[c], vo_font->height,
 658                      vo_font->pic_b[font]->bmp+vo_font->start[c] +
 659                      cs * vo_font->pic_a[font]->w,
 660                      vo_font->pic_a[font]->bmp+vo_font->start[c] +
 661                      cs * vo_font->pic_a[font]->w,
 662                      vo_font->pic_a[font]->w,
 663                      mpi->planes[0] + sy * mpi->stride[0] + sx * (mpi->bpp>>3),
 664                      mpi->stride[0]);
 665         //      else
 666         //printf("Can't draw '%c'\n",c);
 667       }
 668       sx+=vo_font->width[c]+vo_font->charspace;
 669     }
 670     txt = line_end;
 671     if(txt[0] == '\0') break;
 672     sy += vo_font->height + vspace;
 673   }
 674 }
 675
 676 int menu_text_length(char* txt) {
 677   int l = 0;
 678   render_txt(txt);
 679   while (*txt) {
 680     int c=utf8_get_char((const char**)&txt);
 681     l += vo_font->width[c]+vo_font->charspace;
 682   }
 683   return l - vo_font->charspace;
 684 }
 685
 686 void menu_text_size(char* txt,int max_width, int vspace, int warp, int* _w, int* _h) {
 687   int l = 1, i = 0;
 688   int w = 0;
 689
 690   render_txt(txt);
 691   while (*txt) {
 692     int c=utf8_get_char((const char**)&txt);
 693     if(c == '\n' || (warp && i + vo_font->width[c] >= max_width)) {
 694       i -= vo_font->charspace;
 695       if (i > w) w = i;
 696       if(*txt)
 697         l++;
 698       i = 0;
 699       if(c == '\n') continue;
 700     }
 701     i += vo_font->width[c]+vo_font->charspace;
 702   }
 703   if (i > 0) {
 704     i -= vo_font->charspace;
 705     if (i > w) w = i;
 706   }
 707
 708   *_w = w;
 709   *_h = (l-1) * (vo_font->height + vspace) + vo_font->height;
 710 }
 711
 712
 713 int menu_text_num_lines(char* txt, int max_width) {
 714   int l = 1, i = 0;
 715   render_txt(txt);
 716   while (*txt) {
 717     int c=utf8_get_char((const char**)&txt);
 718     if(c == '\n' || i + vo_font->width[c] > max_width) {
 719       l++;
 720       i = 0;
 721       if(c == '\n') continue;
 722     }
 723     i += vo_font->width[c]+vo_font->charspace;
 724   }
 725   return l;
 726 }
 727
 728 char* menu_text_get_next_line(char* txt, int max_width) {
 729   int i = 0;
 730   render_txt(txt);
 731   while (*txt) {
 732     int c=utf8_get_char((const char**)&txt);
 733     if(c == '\n') {
 734       txt++;
 735       break;
 736     }
 737     i += vo_font->width[c];
 738     if(i >= max_width)
 739       break;
 740     i += vo_font->charspace;
 741   }
 742   return txt;
 743 }
 744
 745
 746 void menu_draw_box(mp_image_t* mpi,unsigned char grey,unsigned char alpha, int x, int y, int w, int h) {
 747   draw_alpha_f draw_alpha = get_draw_alpha(mpi->imgfmt);
 748   int g;
 749
 750   if(!draw_alpha) {
 751     mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_UnsupportedOutformat);
 752     return;
 753   }
 754
 755   if(x > mpi->w || y > mpi->h) return;
 756
 757   if(x < 0) w += x, x = 0;
 758   if(x+w > mpi->w) w = mpi->w-x;
 759   if(y < 0) h += y, y = 0;
 760   if(y+h > mpi->h) h = mpi->h-y;
 761
 762   g = ((256-alpha)*grey)>>8;
 763   if(g < 1) g = 1;
 764
 765   {
 766     int stride = (w+7)&(~7); // round to 8
 767     char pic[stride*h],pic_alpha[stride*h];
 768     memset(pic,g,stride*h);
 769     memset(pic_alpha,alpha,stride*h);
 770     draw_alpha(w,h,pic,pic_alpha,stride,
 771                mpi->planes[0] + y * mpi->stride[0] + x * (mpi->bpp>>3),
 772                mpi->stride[0]);
 773   }
 774
 775 }