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//
// "$Id$"
//
// Scroll bar header file for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2008 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
//
/* \file
Fl_Scrollbar widget . */
#ifndef Fl_Scrollbar_H
#define Fl_Scrollbar_H
#include "Fl_Slider.H"
/**
The Fl_Scrollbar widget displays a slider with arrow buttons
at the ends of the scrollbar. Clicking on the arrows move up/left and
down/right by linesize(). Scrollbars also accept
FL_SHORTCUT events: the arrows move by linesize(), and
vertical scrollbars take Page Up/Down (they move by the page size minus
linesize()) and Home/End (they jump to the top or bottom).
<P>Scrollbars have step(1) preset (they always return
integers). If desired you can set the step() to non-integer
values. You will then have to use casts to get at the floating-point
versions of value() from Fl_Slider. </P>
<P ALIGN=CENTER>\image html scrollbar.gif
\image latex scrollbar.eps "Fl_Scrollbar" width=4cm
*/
class FL_EXPORT Fl_Scrollbar : public Fl_Slider {
int linesize_;
int pushed_;
static void timeout_cb(void*);
void increment_cb();
protected:
void draw();
public:
Fl_Scrollbar(int x,int y,int w,int h, const char *l = 0);
~Fl_Scrollbar();
int handle(int);
/**
The first form returns the integer value of the scrollbar. You can get
the floating point value with Fl_Slider::value(). The second
form sets value(), range(), and slider_size()
to make a variable-sized scrollbar. You should call this every time
your window changes size, your data changes size, or your scroll
position changes (even if in response to a callback from this
scrollbar). All necessary calls to redraw() are done.
*/
int value() {return int(Fl_Slider::value());}
/** See int Fl_Scrollbar::value() */
int value(int p, int s, int top, int total) {
return scrollvalue(p, s, top, total);
}
/**
This number controls how big the steps are that the arrow keys do. In
addition page up/down move by the size last sent to value()
minus one linesize(). The default is 16.
*/
int linesize() const {return linesize_;}
/**
This number controls how big the steps are that the arrow keys do. In
addition page up/down move by the size last sent to value()
minus one linesize(). The default is 16.
*/
void linesize(int i) {linesize_ = i;}
};
#endif
//
// End of "$Id$".
//
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