mirror of https://github.com/fltk/fltk
89 lines
2.6 KiB
C++
89 lines
2.6 KiB
C++
//
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// Positioner header file for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2022 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// https://www.fltk.org/COPYING.php
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//
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// Please see the following page on how to report bugs and issues:
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//
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// https://www.fltk.org/bugs.php
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//
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/* \file
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Fl_Positioner widget . */
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#ifndef Fl_Positioner_H
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#define Fl_Positioner_H
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#ifndef Fl_Widget_H
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#include "Fl_Widget.H"
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#endif
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/**
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This class is provided for Forms compatibility. It provides 2D input.
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It would be useful if this could be put atop another widget so that the
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crosshairs are on top, but this is not implemented. The color of the
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crosshairs is selection_color().
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\image html positioner.png
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\image latex positioner.png "Fl_Positioner" width=4cm
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*/
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class FL_EXPORT Fl_Positioner : public Fl_Widget {
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double xmin, ymin;
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double xmax, ymax;
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double xvalue_, yvalue_;
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double xstep_, ystep_;
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protected:
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// these allow subclasses to put the dial in a smaller area:
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void draw(int, int, int, int);
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int handle(int, int, int, int, int);
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void draw() FL_OVERRIDE;
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public:
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int handle(int) FL_OVERRIDE;
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/**
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Creates a new Fl_Positioner widget using the given position,
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size, and label string. The default boxtype is FL_NO_BOX.
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*/
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Fl_Positioner(int x,int y,int w,int h, const char *l=0);
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/** Gets the X axis coordinate.*/
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double xvalue() const {return xvalue_;}
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/** Gets the Y axis coordinate.*/
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double yvalue() const {return yvalue_;}
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int xvalue(double);
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int yvalue(double);
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int value(double,double);
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void xbounds(double, double);
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/** Gets the X axis minimum */
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double xminimum() const {return xmin;}
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/** Same as xbounds(a, xmaximum()) */
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void xminimum(double a) {xbounds(a,xmax);}
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/** Gets the X axis maximum */
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double xmaximum() const {return xmax;}
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/** Same as xbounds(xminimum(), a) */
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void xmaximum(double a) {xbounds(xmin,a);}
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void ybounds(double, double);
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/** Gets the Y axis minimum */
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double yminimum() const {return ymin;}
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/** Same as ybounds(a, ymaximum()) */
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void yminimum(double a) {ybounds(a, ymax);}
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/** Gets the Y axis maximum */
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double ymaximum() const {return ymax;}
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/** Same as ybounds(ymininimum(), a) */
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void ymaximum(double a) {ybounds(ymin, a);}
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/** Sets the stepping value for the X axis.*/
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void xstep(double a) {xstep_ = a;}
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/** Sets the stepping value for the Y axis.*/
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void ystep(double a) {ystep_ = a;}
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};
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#endif
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