aboutsummaryrefslogtreecommitdiffhomepage
path: root/libmenu/menu.c
blob: 3c47623ed688b084173e1141e67f15f42f184d02 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758

#include "config.h"
#include "mp_msg.h"
#include "help_mp.h"

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>

#include "libvo/osd.h"
#include "libvo/font_load.h"
#include "libvo/sub.h"
#include "osdep/keycodes.h"
#include "asxparser.h"
#include "stream/stream.h"
#include "input/input.h"

#include "libmpcodecs/img_format.h"
#include "libmpcodecs/mp_image.h"
#include "m_option.h"
#include "m_struct.h"
#include "menu.h"

extern menu_info_t menu_info_cmdlist;
extern menu_info_t menu_info_chapsel;
extern menu_info_t menu_info_pt;
extern menu_info_t menu_info_filesel;
extern menu_info_t menu_info_txt;
extern menu_info_t menu_info_console;
extern menu_info_t menu_info_pref;
extern menu_info_t menu_info_dvbsel;


menu_info_t* menu_info_list[] = {
  &menu_info_pt,
  &menu_info_cmdlist,
  &menu_info_chapsel,
  &menu_info_filesel,
  &menu_info_txt,
  &menu_info_console,
#ifdef HAS_DVBIN_SUPPORT
  &menu_info_dvbsel,
#endif  
  &menu_info_pref,
  NULL
};

typedef struct key_cmd_s {
  int key;
  char *cmd;
} key_cmd_t;

typedef struct menu_cmd_bindings_s {
  char *name;
  key_cmd_t *bindings;
  int binding_num;
  struct menu_cmd_bindings_s *parent;
} menu_cmd_bindings_t;

struct menu_def_st {
  char* name;
  menu_info_t* type;
  void* cfg;
  char* args;
};

double menu_mouse_x = -1.0;
double menu_mouse_y = -1.0;
int menu_mouse_pos_updated = 0;

static struct MPContext *menu_ctx = NULL;
static menu_def_t* menu_list = NULL;
static int menu_count = 0;
static menu_cmd_bindings_t *cmd_bindings = NULL;
static int cmd_bindings_num = 0;


menu_cmd_bindings_t *get_cmd_bindings(const char *name) {
  int i;
  for (i = 0; i < cmd_bindings_num; ++i)
    if (!strcasecmp(cmd_bindings[i].name, name))
      return &cmd_bindings[i];
  return NULL;
}

static int menu_parse_config(char* buffer) {
  char *element,*body, **attribs, *name;
  menu_info_t* minfo = NULL;
  int r,i;
  ASX_Parser_t* parser = asx_parser_new();

  while(1) {
    r = asx_get_element(parser,&buffer,&element,&body,&attribs);
    if(r < 0) {
      mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_SyntaxErrorAtLine,parser->line);
      asx_parser_free(parser);
      return 0;
    } else if(r == 0) {
      asx_parser_free(parser);
      return 1;
    }
    // Has it a name ?
    name = asx_get_attrib("name",attribs);
    if(!name) {
      mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_MenuDefinitionsNeedANameAttrib,parser->line);
      free(element);
      if(body) free(body);
      asx_free_attribs(attribs);
      continue;
    }

    if (!strcasecmp(element, "keybindings")) {
      menu_cmd_bindings_t *bindings = cmd_bindings;
      char *parent_bindings;
      cmd_bindings = realloc(cmd_bindings,
                             (cmd_bindings_num+1)*sizeof(menu_cmd_bindings_t));
      for (i = 0; i < cmd_bindings_num; ++i)
        if (cmd_bindings[i].parent)
          cmd_bindings[i].parent = cmd_bindings[i].parent-bindings+cmd_bindings;
      bindings = &cmd_bindings[cmd_bindings_num];
      memset(bindings, 0, sizeof(menu_cmd_bindings_t));
      bindings->name = name;
      parent_bindings = asx_get_attrib("parent",attribs);
      if (parent_bindings) {
        bindings->parent = get_cmd_bindings(parent_bindings);
        free(parent_bindings);
      }
      free(element);
      asx_free_attribs(attribs);
      if (body) {
        char *bd = body;
        char *b, *key, *cmd;
        int keycode;
        for(;;) {
          r = asx_get_element(parser,&bd,&element,&b,&attribs);
          if(r < 0) {
            mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_SyntaxErrorAtLine,
                   parser->line);
            free(body);
            asx_parser_free(parser);
            return 0;
          }
          if(r == 0)
            break;
          if (!strcasecmp(element, "binding")) {
            key = asx_get_attrib("key",attribs);
            cmd = asx_get_attrib("cmd",attribs);
            if (key && (keycode = mp_input_get_key_from_name(key)) >= 0) {
              keycode &= ~MP_NO_REPEAT_KEY;
              mp_msg(MSGT_GLOBAL,MSGL_V,
                     "[libmenu] got keybinding element %d %s=>[%s].\n",
                     keycode, key, cmd ? cmd : "");
              bindings->bindings = realloc(bindings->bindings,
                                   (bindings->binding_num+1)*sizeof(key_cmd_t));
              bindings->bindings[bindings->binding_num].key = keycode;
              bindings->bindings[bindings->binding_num].cmd = cmd;
              ++bindings->binding_num;
            }
            else
              free(cmd);
            free(key);
          }
          free(element);
          asx_free_attribs(attribs);
          free(b);
        }
        free(body);
      }
      ++cmd_bindings_num;
      continue;
    }
    // Try to find this menu type in our list
    for(i = 0, minfo = NULL ; menu_info_list[i] ; i++) {
      if(strcasecmp(element,menu_info_list[i]->name) == 0) {
	minfo = menu_info_list[i];
	break;
      }
    }
    // Got it : add this to our list
    if(minfo) {
      menu_list = realloc(menu_list,(menu_count+2)*sizeof(menu_def_t));
      menu_list[menu_count].name = name;
      menu_list[menu_count].type = minfo;
      menu_list[menu_count].cfg = m_struct_alloc(&minfo->priv_st);
      menu_list[menu_count].args = body;
      // Setup the attribs
      for(i = 0 ; attribs[2*i] ; i++) {
	if(strcasecmp(attribs[2*i],"name") == 0) continue;
	if(!m_struct_set(&minfo->priv_st,menu_list[menu_count].cfg,attribs[2*i], attribs[2*i+1]))
	  mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_BadAttrib,attribs[2*i],attribs[2*i+1],
		 name,parser->line);
      }
      menu_count++;
      memset(&menu_list[menu_count],0,sizeof(menu_def_t));
    } else {
      mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_UnknownMenuType,element,parser->line);
      free(name);
      if(body) free(body);
    }

    free(element);
    asx_free_attribs(attribs);
  }

}
      

/// This will build the menu_defs list from the cfg file
#define BUF_STEP 1024
#define BUF_MIN 128
#define BUF_MAX BUF_STEP*1024
int menu_init(struct MPContext *mpctx, char* cfg_file) {
  char* buffer = NULL;
  int bl = BUF_STEP, br = 0;
  int f, fd;
#ifndef HAVE_FREETYPE
  if(vo_font == NULL)
    return 0;
#endif
  fd = open(cfg_file, O_RDONLY);
  if(fd < 0) {
    mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_CantOpenConfigFile,cfg_file);
    return 0;
  }
  buffer = malloc(bl);
  while(1) {
    int r;
    if(bl - br < BUF_MIN) {
      if(bl >= BUF_MAX) {
	mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_ConfigFileIsTooBig,BUF_MAX/1024);
	close(fd);
	free(buffer);
	return 0;
      }
      bl += BUF_STEP;
      buffer = realloc(buffer,bl);
    }
    r = read(fd,buffer+br,bl-br);
    if(r == 0) break;
    br += r;
  }
  if(!br) {
    mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_ConfigFileIsEmpty);
    return 0;
  }
  buffer[br-1] = '\0';

  close(fd);

  menu_ctx = mpctx;
  f = menu_parse_config(buffer);
  free(buffer);
  return f;
}

// Destroy all this stuff
void menu_uninit(void) {
  int i;
  for(i = 0 ; menu_list && menu_list[i].name ; i++) {
    free(menu_list[i].name);
    m_struct_free(&menu_list[i].type->priv_st,menu_list[i].cfg);
    if(menu_list[i].args) free(menu_list[i].args);
  }
  free(menu_list);
  menu_count = 0;
  for (i = 0; i < cmd_bindings_num; ++i) {
    free(cmd_bindings[i].name);
    while(cmd_bindings[i].binding_num > 0)
      free(cmd_bindings[i].bindings[--cmd_bindings[i].binding_num].cmd);
    free(cmd_bindings[i].bindings);
  }
  free(cmd_bindings);
}

/// Default read_key function
int menu_dflt_read_key(menu_t* menu,int cmd) {
  int i;
  menu_cmd_bindings_t *bindings = get_cmd_bindings(menu->type->name);
  if (!bindings)
    bindings = get_cmd_bindings(menu->type->type->name);
  if (!bindings)
    bindings = get_cmd_bindings("default");
  while (bindings) {
    for (i = 0; i < bindings->binding_num; ++i) {
      if (bindings->bindings[i].key == cmd) {
        if (bindings->bindings[i].cmd)
          mp_input_parse_and_queue_cmds(bindings->bindings[i].cmd);
        return 1;
      }
    }
    bindings = bindings->parent;
  }
  return 0;
}

menu_t* menu_open(char *name) {
  menu_t* m;
  int i;

  for(i = 0 ; menu_list[i].name != NULL ; i++) {
    if(strcmp(name,menu_list[i].name) == 0)
      break;
  }
  if(menu_list[i].name == NULL) {
    mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_MenuNotFound,name);
    return NULL;
  }
  m = calloc(1,sizeof(menu_t));
  m->priv_st = &(menu_list[i].type->priv_st);
  m->priv = m_struct_copy(m->priv_st,menu_list[i].cfg);
  m->ctx = menu_ctx;
  m->type = &menu_list[i];
  if(menu_list[i].type->open(m,menu_list[i].args))
    return m;
  if(m->priv)
    m_struct_free(m->priv_st,m->priv);
  free(m);
  mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_MenuInitFailed,name);
  return NULL;
}

void menu_draw(menu_t* menu,mp_image_t* mpi) {
  if(menu->show && menu->draw)
    menu->draw(menu,mpi);
}

void menu_update_mouse_pos(double x, double y) {
  menu_mouse_x = x;
  menu_mouse_y = y;
  menu_mouse_pos_updated = 1;
}

void menu_read_cmd(menu_t* menu,int cmd) {
  if(menu->read_cmd)
    menu->read_cmd(menu,cmd);
}

void menu_close(menu_t* menu) {
  if(menu->close)
    menu->close(menu);
  if(menu->priv)
    m_struct_free(menu->priv_st,menu->priv);
  free(menu);
}

int menu_read_key(menu_t* menu,int cmd) {
  if(menu->read_key)
    return menu->read_key(menu,cmd);
  else
    return menu_dflt_read_key(menu,cmd);
}

///////////////////////////// Helpers ////////////////////////////////////

typedef void (*draw_alpha_f)(int w,int h, unsigned char* src, unsigned char *srca, int srcstride, unsigned char* dstbase,int dststride);

inline static draw_alpha_f get_draw_alpha(uint32_t fmt) {
  switch(fmt) {
  case IMGFMT_BGR15:
  case IMGFMT_RGB15:
    return vo_draw_alpha_rgb15;
  case IMGFMT_BGR16:
  case IMGFMT_RGB16:
    return vo_draw_alpha_rgb16;
  case IMGFMT_BGR24:
  case IMGFMT_RGB24:
    return vo_draw_alpha_rgb24;
  case IMGFMT_BGR32:
  case IMGFMT_RGB32:
    return vo_draw_alpha_rgb32;
  case IMGFMT_YV12:
  case IMGFMT_I420:
  case IMGFMT_IYUV:
  case IMGFMT_YVU9:
  case IMGFMT_IF09:
  case IMGFMT_Y800:
  case IMGFMT_Y8:
    return vo_draw_alpha_yv12;
  case IMGFMT_YUY2:
    return vo_draw_alpha_yuy2;
  case IMGFMT_UYVY:
    return vo_draw_alpha_uyvy;
  }

  return NULL;
}

// return the real height of a char:
static inline int get_height(int c,int h){
    int font;
    if ((font=vo_font->font[c])>=0)
	if(h<vo_font->pic_a[font]->h) h=vo_font->pic_a[font]->h;
    return h;
}

static void render_txt(char *txt)
{
  while (*txt) {
    int c = utf8_get_char((const char**)&txt);
    render_one_glyph(vo_font, c);
  }
}

#ifdef USE_FRIBIDI
#include <fribidi/fribidi.h>
#include "libavutil/common.h"
char *menu_fribidi_charset = NULL;
int menu_flip_hebrew = 0;
int menu_fribidi_flip_commas = 0;

static char *menu_fribidi(char *txt)
{
  static int char_set_num = -1;
  static FriBidiChar *logical, *visual;
  static size_t buffer_size = 1024;
  static char *outputstr;

  FriBidiCharType base;
  fribidi_boolean log2vis;
  size_t len;

  if (menu_flip_hebrew) {
    len = strlen(txt);
    if (char_set_num == -1) {
      fribidi_set_mirroring (1);
      fribidi_set_reorder_nsm (0);
      char_set_num = fribidi_parse_charset("UTF-8");
      buffer_size = FFMAX(1024,len+1);
      logical = malloc(buffer_size);
      visual = malloc(buffer_size);
      outputstr = malloc(buffer_size);
    } else if (len+1 > buffer_size) {
      buffer_size = len+1;
      logical = realloc(logical, buffer_size);
      visual = realloc(visual, buffer_size);
      outputstr = realloc(outputstr, buffer_size);
    }
    len = fribidi_charset_to_unicode (char_set_num, txt, len, logical);
    base = menu_fribidi_flip_commas?FRIBIDI_TYPE_ON:FRIBIDI_TYPE_L;
    log2vis = fribidi_log2vis (logical, len, &base, visual, NULL, NULL, NULL);
    if (log2vis) {
      len = fribidi_remove_bidi_marks (visual, len, NULL, NULL, NULL);
      fribidi_unicode_to_charset (char_set_num, visual, len, outputstr);
      return outputstr;
    }
  }
  return txt;
}
#endif

void menu_draw_text(mp_image_t* mpi,char* txt, int x, int y) {
  draw_alpha_f draw_alpha = get_draw_alpha(mpi->imgfmt);
  int font;

  if(!draw_alpha) {
    mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_UnsupportedOutformat);
    return;
  }

#ifdef USE_FRIBIDI
  txt = menu_fribidi(txt);
#endif
  render_txt(txt);

  while (*txt) {
    int c=utf8_get_char((const char**)&txt);
    if ((font=vo_font->font[c])>=0 && (x + vo_font->width[c] <= mpi->w) && (y + vo_font->pic_a[font]->h <= mpi->h))
      draw_alpha(vo_font->width[c], vo_font->pic_a[font]->h,
		 vo_font->pic_b[font]->bmp+vo_font->start[c],
		 vo_font->pic_a[font]->bmp+vo_font->start[c],
		 vo_font->pic_a[font]->w,
		 mpi->planes[0] + y * mpi->stride[0] + x * (mpi->bpp>>3),
		 mpi->stride[0]);
    x+=vo_font->width[c]+vo_font->charspace;
  }

}

void menu_draw_text_full(mp_image_t* mpi,char* txt,
			 int x, int y,int w, int h,
			 int vspace, int warp, int align, int anchor) {
  int need_w,need_h;
  int sy, ymin, ymax;
  int sx, xmin, xmax, xmid, xrmin;
  int ll = 0;
  int font;
  draw_alpha_f draw_alpha = get_draw_alpha(mpi->imgfmt);

  if(!draw_alpha) {
    mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_UnsupportedOutformat);
    return;
  }

#ifdef USE_FRIBIDI
  txt = menu_fribidi(txt);
#endif
  render_txt(txt);

  if(x > mpi->w || y > mpi->h)
    return;

  if(anchor & MENU_TEXT_VCENTER) {
    if(h <= 0) h = mpi->h;
    ymin = y - h/2;
    ymax = y + h/2;
  }  else if(anchor & MENU_TEXT_BOT) {
    if(h <= 0) h = mpi->h - y;
    ymin = y - h;
    ymax = y;
  } else {
    if(h <= 0) h = mpi->h - y;
    ymin = y;
    ymax = y + h;
  }

  if(anchor & MENU_TEXT_HCENTER) {
    if(w <= 0) w = mpi->w;
    xmin = x - w/2;
    xmax = x + w/2;
  }  else if(anchor & MENU_TEXT_RIGHT) {
    if(w <= 0) w = mpi->w -x;
    xmin = x - w;
    xmax = x;
  } else {
    if(w <= 0) w = mpi->w -x;
    xmin = x;
    xmax = x + w;
  }

  // How many space do we need to draw this ?
  menu_text_size(txt,w,vspace,warp,&need_w,&need_h);

  // Find the first line
  if(align & MENU_TEXT_VCENTER)
    sy = ymin + ((h - need_h)/2);
  else if(align & MENU_TEXT_BOT) 
    sy = ymax - need_h - 1;
  else
    sy = y;

#if 0
  // Find the first col
  if(align & MENU_TEXT_HCENTER)
    sx = xmin + ((w - need_w)/2);
  else if(align & MENU_TEXT_RIGHT)
    sx = xmax - need_w;
#endif
  
  xmid = xmin + (xmax - xmin) / 2;
  xrmin = xmin;
  // Clamp the bb to the mpi size
  if(ymin < 0) ymin = 0;
  if(xmin < 0) xmin = 0;
  if(ymax > mpi->h) ymax = mpi->h;
  if(xmax > mpi->w) xmax = mpi->w;
  
  // Jump some the beginnig text if needed
  while(sy < ymin && *txt) {
    int c=utf8_get_char((const char**)&txt);
    if(c == '\n' || (warp && ll + vo_font->width[c] > w)) {
      ll = 0;
      sy += vo_font->height + vspace;
      if(c == '\n') continue;
    }
    ll += vo_font->width[c]+vo_font->charspace;
  }
  if(*txt == '\0') // Nothing left to draw
      return;

  while(sy < ymax && *txt) {
    char* line_end = NULL;
    int n;

    if(txt[0] == '\n') { // New line
      sy += vo_font->height + vspace;
      txt++;
      continue;
    }

    // Get the length and end of this line
    for(n = 0, ll = 0 ; txt[n] != '\0' && txt[n] != '\n'  ; n++) {
      unsigned char c = txt[n];
      if(warp && ll + vo_font->width[c]  > w)  break;
      ll += vo_font->width[c]+vo_font->charspace;
    }
    line_end = &txt[n];
    ll -= vo_font->charspace;


    if(align & (MENU_TEXT_HCENTER|MENU_TEXT_RIGHT)) {
      // Too long line
      if(ll > xmax-xmin) {
	if(align & MENU_TEXT_HCENTER) {
	  int mid = ll/2;
	  // Find the middle point
	  for(n--, ll = 0 ; n <= 0 ; n--) {
	    ll += vo_font->width[(int)txt[n]]+vo_font->charspace;
	    if(ll - vo_font->charspace > mid) break;
	  }
	  ll -= vo_font->charspace;
	  sx = xmid + mid - ll;
	} else// MENU_TEXT_RIGHT)
	  sx = xmax + vo_font->charspace;

	// We are after the start point -> go back
	if(sx > xmin) {
	  for(n-- ; n <= 0 ; n--) {
	    unsigned char c = txt[n];
	    if(sx - vo_font->width[c] - vo_font->charspace < xmin) break;
	    sx -= vo_font->width[c]+vo_font->charspace;
	  }
	} else { // We are before the start point -> go forward
	  for( ; sx < xmin && (&txt[n]) != line_end ; n++) {
	    unsigned char c = txt[n];
	    sx += vo_font->width[c]+vo_font->charspace;
	  }
	}
	txt = &txt[n]; // Jump to the new start char
      } else {
	if(align & MENU_TEXT_HCENTER)
	  sx = xmid - ll/2;
	else
	  sx = xmax - 1 - ll;
      }
    } else {
      for(sx = xrmin ;  sx < xmin && txt != line_end ; txt++) {
	unsigned char c = txt[n];
	sx += vo_font->width[c]+vo_font->charspace;
      }
    }

    while(sx < xmax && txt != line_end) {
      int c=utf8_get_char((const char**)&txt);
      font = vo_font->font[c];
      if(font >= 0) {
 	int cs = (vo_font->pic_a[font]->h - vo_font->height) / 2;
	if ((sx + vo_font->width[c] <= xmax) && (sy + vo_font->height <= ymax) )
	  draw_alpha(vo_font->width[c], vo_font->height,
		     vo_font->pic_b[font]->bmp+vo_font->start[c] +
		     cs * vo_font->pic_a[font]->w,
		     vo_font->pic_a[font]->bmp+vo_font->start[c] +
		     cs * vo_font->pic_a[font]->w,
		     vo_font->pic_a[font]->w,
		     mpi->planes[0] + sy * mpi->stride[0] + sx * (mpi->bpp>>3),
		     mpi->stride[0]);
	//	else
	//printf("Can't draw '%c'\n",c);
      }
      sx+=vo_font->width[c]+vo_font->charspace;
    }
    txt = line_end;
    if(txt[0] == '\0') break;
    sy += vo_font->height + vspace;
  }
}
	  
int menu_text_length(char* txt) {
  int l = 0;
  render_txt(txt);
  while (*txt) {
    int c=utf8_get_char((const char**)&txt);
    l += vo_font->width[c]+vo_font->charspace;
  }
  return l - vo_font->charspace;
}

void menu_text_size(char* txt,int max_width, int vspace, int warp, int* _w, int* _h) {
  int l = 1, i = 0;
  int w = 0;

  render_txt(txt);
  while (*txt) {
    int c=utf8_get_char((const char**)&txt);
    if(c == '\n' || (warp && i + vo_font->width[c] >= max_width)) {
      i -= vo_font->charspace;
      if (i > w) w = i;
      if(*txt)
	l++;
      i = 0;
      if(c == '\n') continue;
    }
    i += vo_font->width[c]+vo_font->charspace;
  }
  if (i > 0) {
    i -= vo_font->charspace;
    if (i > w) w = i;
  }
  
  *_w = w;
  *_h = (l-1) * (vo_font->height + vspace) + vo_font->height;
}


int menu_text_num_lines(char* txt, int max_width) {
  int l = 1, i = 0;
  render_txt(txt);
  while (*txt) {
    int c=utf8_get_char((const char**)&txt);
    if(c == '\n' || i + vo_font->width[c] > max_width) {
      l++;
      i = 0;
      if(c == '\n') continue;
    }
    i += vo_font->width[c]+vo_font->charspace;
  }
  return l;
}
  
char* menu_text_get_next_line(char* txt, int max_width) {
  int i = 0;
  render_txt(txt);
  while (*txt) {
    int c=utf8_get_char((const char**)&txt);
    if(c == '\n') {
      txt++;
      break;
    }
    i += vo_font->width[c];
    if(i >= max_width)
      break;
    i += vo_font->charspace;
  }
  return txt;
}


void menu_draw_box(mp_image_t* mpi,unsigned char grey,unsigned char alpha, int x, int y, int w, int h) {
  draw_alpha_f draw_alpha = get_draw_alpha(mpi->imgfmt);
  int g;
  
  if(!draw_alpha) {
    mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_UnsupportedOutformat);
    return;
  }
  
  if(x > mpi->w || y > mpi->h) return;
  
  if(x < 0) w += x, x = 0;
  if(x+w > mpi->w) w = mpi->w-x;
  if(y < 0) h += y, y = 0;
  if(y+h > mpi->h) h = mpi->h-y;
    
  g = ((256-alpha)*grey)>>8;
  if(g < 1) g = 1;
    
  {
    int stride = (w+7)&(~7); // round to 8
    char pic[stride*h],pic_alpha[stride*h];
    memset(pic,g,stride*h);
    memset(pic_alpha,alpha,stride*h);
    draw_alpha(w,h,pic,pic_alpha,stride,
               mpi->planes[0] + y * mpi->stride[0] + x * (mpi->bpp>>3),
               mpi->stride[0]);
  }
  
}