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//
// "$Id$"
//
// Forms free widget routines for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2009 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);
}
/**
Create a new Fl_Free widget with type, position, size, label and handler.
\param[in] t type
\param[in] X, Y, W, H position and size
\param[in] L widget label
\param[in] hdl handler function
The constructor takes both the type and the handle function. The handle
function should be declared as follows:
\code
int handle_function(Fl_Widget *w,
int event,
float event_x,
float event_y,
char key)
\endcode
This function is called from the handle() method in response to most
events, and is called by the draw() method.
The event argument contains the event type:
\code
// old event names for compatibility:
#define FL_MOUSE FL_DRAG
#define FL_DRAW 0
#define FL_STEP 9
#define FL_FREEMEM 12
#define FL_FREEZE FL_UNMAP
#define FL_THAW FL_MAP
\endcode
*/
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);
}
/**
The destructor will call the handle function with the event FL_FREE_MEM.
*/
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 "$Id$".
//
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