fl_input_.h

guide and some example with visualC++

//
// "$Id: Fl_Input_.H,v 1.2 2002/12/01 15:38:37 neurosurg Exp $"
//
// Input base class header file for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2002 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "[e-mail]".
//

#ifndef Fl_Input__H
#define Fl_Input__H

#ifndef Fl_Widget_H
#include "Fl_Widget.H"
#endif

#define FL_NORMAL_INPUT		0
#define FL_FLOAT_INPUT		1
#define FL_INT_INPUT		2
#define FL_HIDDEN_INPUT		3
#define FL_MULTILINE_INPUT	4
#define FL_SECRET_INPUT		5
#define FL_INPUT_TYPE		7
#define FL_INPUT_READONLY	8
#define FL_NORMAL_OUTPUT	(FL_NORMAL_INPUT | FL_INPUT_READONLY)
#define FL_MULTILINE_OUTPUT	(FL_MULTILINE_INPUT | FL_INPUT_READONLY)
#define FL_INPUT_WRAP		16
#define FL_MULTILINE_INPUT_WRAP	(FL_MULTILINE_INPUT | FL_INPUT_WRAP)
#define FL_MULTILINE_OUTPUT_WRAP (FL_MULTILINE_INPUT | FL_INPUT_READONLY | FL_INPUT_WRAP)

class FL_EXPORT Fl_Input_ : public Fl_Widget {

  const char* value_;
  char* buffer;

  int size_;
  int bufsize;
  int position_;
  int mark_;
  int xscroll_, yscroll_;
  int mu_p;
  int maximum_size_;

  uchar erase_cursor_only;
  uchar textfont_;
  uchar textsize_;
  unsigned textcolor_;
  unsigned cursor_color_;

  const char* expand(const char*, char*) const;
  double expandpos(const char*, const char*, const char*, int*) const;
  void minimal_update(int, int);
  void minimal_update(int p);
  void put_in_buffer(int newsize);

  void setfont() const;

protected:

  int word_start(int i) const;
  int word_end(int i) const;
  int line_start(int i) const;
  int line_end(int i) const;
  void drawtext(int, int, int, int);
  int up_down_position(int, int keepmark=0);
  void handle_mouse(int, int, int, int, int keepmark=0);
  int handletext(int e, int, int, int, int);
  void maybe_do_callback();
  int xscroll() const {return xscroll_;}
  int yscroll() const {return yscroll_;}

public:

  void resize(int, int, int, int);

  Fl_Input_(int, int, int, int, const char* = 0);
  ~Fl_Input_();

  int value(const char*);
  int value(const char*, int);
  int static_value(const char*);
  int static_value(const char*, int);
  const char* value() const {return value_;}
  char index(int i) const {return value_[i];}
  int size() const {return size_;}
  int maximum_size() const {return maximum_size_;}
  void maximum_size(int m) {maximum_size_ = m;}

  int position() const {return position_;}
  int mark() const {return mark_;}
  int position(int p, int m);
  int position(int p) {return position(p, p);}
  int mark(int m) {return position(position(), m);}
  int replace(int, int, const char*, int=0);
  int cut() {return replace(position(), mark(), 0);}
  int cut(int n) {return replace(position(), position()+n, 0);}
  int cut(int a, int b) {return replace(a, b, 0);}
  int insert(const char* t, int l=0){return replace(position_, mark_, t, l);}
  int copy(int clipboard);
  int undo();
  int copy_cuts();

  Fl_Font textfont() const {return (Fl_Font)textfont_;}
  void textfont(uchar s) {textfont_ = s;}
  uchar textsize() const {return textsize_;}
  void textsize(uchar s) {textsize_ = s;}
  Fl_Color textcolor() const {return (Fl_Color)textcolor_;}
  void textcolor(unsigned n) {textcolor_ = n;}
  Fl_Color cursor_color() const {return (Fl_Color)cursor_color_;}
  void cursor_color(unsigned n) {cursor_color_ = n;}

  int input_type() const {return type() & FL_INPUT_TYPE; }
  void input_type(int t) { type((uchar)(t | readonly())); }
  int readonly() const { return type() & FL_INPUT_READONLY; }
  void readonly(int b) { if (b) type((uchar)(type() | FL_INPUT_READONLY));
                         else type((uchar)(type() & ~FL_INPUT_READONLY)); }
  int wrap() const { return type() & FL_INPUT_WRAP; }
  void wrap(int b) { if (b) type((uchar)(type() | FL_INPUT_WRAP));
                         else type((uchar)(type() & ~FL_INPUT_WRAP)); }
};

#endif 

//
// End of "$Id: Fl_Input_.H,v 1.2 2002/12/01 15:38:37 neurosurg Exp $".
//