source/iline.h

   1 //**************************************************************************
   2 //**
   3 //**    ##   ##    ##    ##   ##   ####     ####   ###     ###
   4 //**    ##   ##  ##  ##  ##   ##  ##  ##   ##  ##  ####   ####
   5 //**     ## ##  ##    ##  ## ##  ##    ## ##    ## ## ## ## ##
   6 //**     ## ##  ########  ## ##  ##    ## ##    ## ##  ###  ##
   7 //**      ###   ##    ##   ###    ##  ##   ##  ##  ##       ##
   8 //**       #    ##    ##    #      ####     ####   ##       ##
   9 //**
  10 //**  Copyright (C) 1999-2006 Jānis Legzdiņš
  11 //**  Copyright (C) 2018-2023 Ketmar Dark
  12 //**
  13 //**  This program is free software: you can redistribute it and/or modify
  14 //**  it under the terms of the GNU General Public License as published by
  15 //**  the Free Software Foundation, version 3 of the License ONLY.
  16 //**
  17 //**  This program is distributed in the hope that it will be useful,
  18 //**  but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 //**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 //**  GNU General Public License for more details.
  21 //**
  22 //**  You should have received a copy of the GNU General Public License
  23 //**  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24 //**
  25 //**************************************************************************
  26 //**
  27 //**  input line library
  28 //**
  29 //**************************************************************************
  30 #ifndef CL_ILINE_HEADER
  31 #define CL_ILINE_HEADER
  32
  33
  34 // input text line widget
  35 class TILine {
  36 protected:
  37   char *data; // line of text (zero-terminated)
  38   int len; // current line length
  39   int maxlen;
  40   int curpos;
  41   int vischars; // number of on-screen visible chars
  42   int visfirst; // first visible char in current string
  43   // temp buffer for renderer
  44   char *temp;
  45   int tempsize;
  46
  47 protected:
  48   void setup ();
  49
  50   void ensureCursorVisible ();
  51
  52 public:
  53   char cursorChar;
  54
  55 public:
  56   TILine () : data(nullptr), len(0), maxlen(0), curpos(0), vischars(80), visfirst(0), temp(nullptr), tempsize(0), cursorChar('_') { setup(); }
  57   TILine (int amaxlen) : data(nullptr), len(0), maxlen(amaxlen), curpos(0), vischars(80), visfirst(0), temp(nullptr), tempsize(0), cursorChar('_') { setup(); }
  58   ~TILine ();
  59
  60   inline int length () const { return len; }
  61   inline int maxLength () const { return maxlen; }
  62   inline const char *getCStr () const { return data; }
  63   inline const char *operator * () const { return data; }
  64
  65   inline int getCurPos () const { return clampval(curpos, 0, len); }
  66   inline void setCurPos (int cpos) { curpos = cpos; ensureCursorVisible(); }
  67
  68   void SetVisChars (int vc);
  69
  70   void Init ();
  71   void AddString (VStr s);
  72   void AddString (const char *s);
  73   void AddChar (char ch);
  74   void DelChar (); // this does "backspace"
  75   void RemoveChar (); // this removes char at the current cursor position, and doesn't move cursor
  76   void DelWord ();
  77   void WordLeft ();
  78   void WordRight ();
  79   bool Key (const event_t &ev); // whether eaten
  80
  81   // font and align should be already set
  82   void DrawAt (int x0, int y0, int clrNormal=CR_ORANGE, int clrLR=CR_FIRE);
  83 };
  84
  85
  86 #endif