84 lines
2.5 KiB
C++
84 lines
2.5 KiB
C++
//
|
|
// "$Id: Fl_Valuator.H,v 1.4 1999/01/07 19:17:04 mike Exp $"
|
|
//
|
|
// Valuator header file for the Fast Light Tool Kit (FLTK).
|
|
//
|
|
// Copyright 1998-1999 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 "fltk-bugs@easysw.com".
|
|
//
|
|
|
|
#ifndef Fl_Valuator_H
|
|
#define Fl_Valuator_H
|
|
|
|
#ifndef Fl_Widget_H
|
|
#include "Fl_Widget.H"
|
|
#endif
|
|
|
|
// shared type() values for classes that work in both directions:
|
|
#define FL_VERTICAL 0
|
|
#define FL_HORIZONTAL 1
|
|
|
|
class Fl_Valuator : public Fl_Widget {
|
|
|
|
double value_;
|
|
double previous_value_;
|
|
double min, max; // truncates to this range *after* rounding
|
|
double A; int B; // rounds to multiples of A/B, or no rounding if A is zero
|
|
|
|
protected:
|
|
|
|
int horizontal() const {return type()&1;}
|
|
Fl_Valuator(int X, int Y, int W, int H, const char* L);
|
|
|
|
double previous_value() const {return previous_value_;}
|
|
void handle_push() {previous_value_ = value_;}
|
|
double softclamp(double);
|
|
void handle_drag(double newvalue);
|
|
void handle_release(); // use drag() value
|
|
virtual void value_damage(); // cause damage() due to value() changing
|
|
|
|
public:
|
|
|
|
void bounds(double a, double b) {min=a; max=b;}
|
|
double minimum() const {return min;}
|
|
void minimum(double a) {min = a;}
|
|
double maximum() const {return max;}
|
|
void maximum(double a) {max = a;}
|
|
void range(double a, double b) {min = a; max = b;}
|
|
void step(int a) {A = a; B = 1;}
|
|
void step(double a, int b) {A = a; B = b;}
|
|
void step(double s);
|
|
double step() const {return A/B;}
|
|
void precision(int);
|
|
|
|
double value() const {return value_;}
|
|
int value(double);
|
|
|
|
virtual int format(char*);
|
|
double round(double); // round to nearest multiple of step
|
|
double clamp(double); // keep in range
|
|
double increment(double, int); // add n*step to value
|
|
};
|
|
|
|
#endif
|
|
|
|
//
|
|
// End of "$Id: Fl_Valuator.H,v 1.4 1999/01/07 19:17:04 mike Exp $".
|
|
//
|