menu.c

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      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(&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(&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(&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(&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(&txt);
    if(c == '\n' || (warp && i + vo_font->width[c] >= max_width)) {
      if(*txt)
	l++;
      i = 0;
      if(c == '\n') continue;
    }
    i += vo_font->width[c]+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(&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(&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]);
  }
  
}