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This method can be used to set a more appropriate color average to prevent "graying out" the box colors of the 'plastic' scheme. Alternatively environment variable 'FLTK_PLASTIC_AVERAGE' can be used to set the color average value. See docs for details. Set color average to 45% in test/unittests demo program.
81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
//
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// Fl_Scheme header for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 2022-2025 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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#ifndef _FL_Fl_Scheme_H_
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#define _FL_Fl_Scheme_H_
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#include <FL/Fl.H>
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/**
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\brief Base class with static methods for future Fl_Scheme classes.
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This class is intentionally not fully documented and is subject to change
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in future FLTK versions.
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\note Do not rely on details of this class.
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\since 1.4.0
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*/
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class FL_EXPORT Fl_Scheme {
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private:
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static const char **names_; // registered scheme names
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static int num_schemes_; // number of registered schemes
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static int alloc_size_; // number of allocated scheme name entries
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protected:
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// const char *name_; // the scheme's name
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// protected constructor - not yet implemented
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// Fl_Scheme(const char *name);
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public:
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// Static methods.
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// Some of these methods will replace the scheme related methods of class Fl,
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// for instance Fl::scheme() and Fl::is_scheme().
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// Backwards compatibility must be kept though.
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static const char **names();
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/**
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Return the number of currently registered schemes.
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\return Number of registered schemes.
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*/
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static int num_schemes() {
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if (!names_) names(); // force initialization
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return num_schemes_;
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}
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// Adding a scheme name must be a public static method in (since) FLTK 1.4.0.
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// This will later be protected or replaced by another method name.
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static int add_scheme_name(const char *name);
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// Set color average parameter of the 'plastic' scheme.
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// See GitHub Issue 464: "RFE: plastic scheme with faithful colors".
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// See also documentation and implementation in src/fl_plastic.cxx.
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static void plastic_color_average(int av);
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}; // class Fl_Scheme
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#endif // _FL_Fl_Scheme_H_
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