text: /*
   * sfnedit/help.c
   *
   * Copyright (C) 2020 bzt (bztsrc@gitlab)
   *
   * Permission is hereby granted, free of charge, to any person
   * obtaining a copy of this software and associated documentation
   * files (the "Software"), to deal in the Software without
   * restriction, including without limitation the rights to use, copy,
   * modify, merge, publish, distribute, sublicense, and/or sell copies
   * of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be
   * included in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
   * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
   * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
   * DEALINGS IN THE SOFTWARE.
   *
   * @brief Contextual help window
   *
   */
  
  #include <stdint.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <unistd.h>
  #include "libsfn.h"
  #include "ui.h"
  #include "lang.h"
  
  /**
   * Help window
   */
  void view_help(int idx)
  {
      int i, c;
      char *title, *wt, *s;
      ui_win_t *win = &wins[idx];
  
      i = wins[idx].tool < 0 ? 0 : wins[idx].tool;
      if(!idx) {
          title = lang[MTOOL_ABOUT + i];
          wt = lang[WHELP_MWIN];
          s = lang[MHELP_ABOUT + i];
      } else {
          title = lang[GTOOL_MEASURES + i];
          wt = lang[WHELP_GWIN];
          s = lang[GHELP_MEASURES + i];
      }
      ssfn_dst.ptr = (uint8_t*)win->data;
      ssfn_dst.p = win->p*4;
      ssfn_dst.w = win->w;
      ssfn_dst.h = win->h;
      ssfn_dst.x = 8;
      ssfn_dst.y = 8;
  
      ssfn_dst.fg = 0xFF000000 | ((theme[THEME_BG] >> 2) & 0x3F3F3F);
      ssfn_dst.bg = 0;
      ui_text(win, ssfn_dst.x+1, 9, lang[HELP]);
      ui_text(win, ssfn_dst.x+8, 9, title);
      ssfn_dst.x = 8;
      ssfn_dst.fg = 0xFF000000 | ((theme[THEME_FG] << 2) & 0xFCFCFC);
      ui_text(win, ssfn_dst.x, 8, lang[HELP]);
      ui_text(win, ssfn_dst.x+8, 8, title);
      ssfn_dst.fg = theme[THEME_FG];
      ui_text(win, 8, 32, wt);
      ssfn_dst.x = 8;
      ssfn_dst.y = 52;
      while(*s) {
          c = ssfn_utf8(&s);
          if(c == '[') { ssfn_dst.fg = theme[THEME_BG]; ssfn_dst.bg = theme[THEME_FG]; ssfn_putc(' '); } else
          if(c == ']') { ssfn_putc(' '); ssfn_dst.fg = theme[THEME_FG]; ssfn_dst.bg = theme[THEME_BG]; } else
          if(c == '\t') { ssfn_dst.x = 8 + 20*8; } else
          if(c == '\n' || ssfn_dst.x + 8 >= win->w) { ssfn_dst.x = 8; ssfn_dst.y += 18; }
          else ssfn_putc(c);
      }
  }
  