forms_free.cxx

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//
// "$Id: forms_free.cxx 7903 2010-11-28 21:06:39Z matt $"
//
// Forms free widget routines for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2010 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 on the following page:
//
//     http://www.fltk.org/str.php
//

// Emulation of the Forms "free" widget.
// This emulation allows the free demo to run, and has allowed
// me to port several other programs, but it is in no way
// complete.

#include <FL/Fl.H>
#include <FL/Fl_Free.H>

void Fl_Free::step(void *v) {
  Fl_Free *f = (Fl_Free *)v;
  int old_event = Fl::e_number;
  f->handle(Fl::e_number == FL_STEP);
  Fl::e_number = old_event;
  Fl::add_timeout(.01,step,v);
}

Fl_Free::Fl_Free(uchar t,int X, int Y, int W, int H,const char *L,
                 FL_HANDLEPTR hdl) :
Fl_Widget(X,Y,W,H,L) {
  type(t);
  hfunc = hdl;
  if (t == FL_SLEEPING_FREE) set_flag(INACTIVE);
  if (t == FL_CONTINUOUS_FREE || t == FL_ALL_FREE)
    Fl::add_timeout(.01,step,this);
}

Fl_Free::~Fl_Free() {
  Fl::remove_timeout(step,this);
  hfunc(this,FL_FREEMEM,0,0,0);
}

void Fl_Free::draw() {hfunc(this,FL_DRAW,0,0,0);}

int Fl_Free::handle(int e) {
  char key = Fl::event_key();
  switch (e) {
  case FL_FOCUS:
    if (type()!=FL_INPUT_FREE && type()!=FL_ALL_FREE) return 0;
    break;
  case FL_PUSH:
  case FL_DRAG:
  case FL_RELEASE:
    key = 4-Fl::event_button();
    break;
  case FL_SHORTCUT:
    return 0;
  }
  if (hfunc(this, e, float(Fl::event_x()), float(Fl::event_y()), key)) do_callback();
  return 1;
}

//
// End of "$Id: forms_free.cxx 7903 2010-11-28 21:06:39Z matt $".
//