FLTK 1.3.0
Fl_Positioner.H
1 //
2 // "$Id: Fl_Positioner.H 7981 2010-12-08 23:53:04Z greg.ercolano $"
3 //
4 // Positioner header file for the Fast Light Tool Kit (FLTK).
5 //
6 // Copyright 1998-2010 by Bill Spitzak and others.
7 //
8 // This library is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU Library General Public
10 // License as published by the Free Software Foundation; either
11 // version 2 of the License, or (at your option) any later version.
12 //
13 // This library is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // Library General Public License for more details.
17 //
18 // You should have received a copy of the GNU Library General Public
19 // License along with this library; if not, write to the Free Software
20 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
21 // USA.
22 //
23 // Please report all bugs and problems on the following page:
24 //
25 // http://www.fltk.org/str.php
26 //
27 
28 /* \file
29  Fl_Positioner widget . */
30 
31 #ifndef Fl_Positioner_H
32 #define Fl_Positioner_H
33 
34 #ifndef Fl_Widget_H
35 #include "Fl_Widget.H"
36 #endif
37 
46 class FL_EXPORT Fl_Positioner : public Fl_Widget {
47 
48  double xmin, ymin;
49  double xmax, ymax;
50  double xvalue_, yvalue_;
51  double xstep_, ystep_;
52 
53 protected:
54 
55  // these allow subclasses to put the dial in a smaller area:
56  void draw(int, int, int, int);
57  int handle(int, int, int, int, int);
58  void draw();
59 
60 public:
61 
62  int handle(int);
67  Fl_Positioner(int x,int y,int w,int h, const char *l=0);
69  double xvalue() const {return xvalue_;}
71  double yvalue() const {return yvalue_;}
72  int xvalue(double);
73  int yvalue(double);
74  int value(double,double);
75  void xbounds(double, double);
77  double xminimum() const {return xmin;}
79  void xminimum(double a) {xbounds(a,xmax);}
81  double xmaximum() const {return xmax;}
83  void xmaximum(double a) {xbounds(xmin,a);}
84  void ybounds(double, double);
86  double yminimum() const {return ymin;}
88  void yminimum(double a) {ybounds(a, ymax);}
90  double ymaximum() const {return ymax;}
92  void ymaximum(double a) {ybounds(ymin, a);}
94  void xstep(double a) {xstep_ = a;}
96  void ystep(double a) {ystep_ = a;}
97 };
98 
99 #endif
100 
101 //
102 // End of "$Id: Fl_Positioner.H 7981 2010-12-08 23:53:04Z greg.ercolano $".
103 //