103 lines
3.1 KiB
C++
103 lines
3.1 KiB
C++
/*
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*
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* Conky, a system monitor, based on torsmo
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*
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* Any original torsmo code is licensed under the BSD license
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*
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* All code written since the fork of torsmo is licensed under the GPL
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*
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* Please see COPYING for details
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*
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* Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
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* Copyright (c) 2005-2021 Brenden Matthews, Philip Kovacs, et. al.
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* (see AUTHORS)
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* All rights reserved.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef _GRADIENT_H
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#define _GRADIENT_H
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#include <memory>
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#include "colours.h"
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namespace conky {
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class gradient_factory {
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public:
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typedef std::unique_ptr<Colour[]> colour_array;
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static const long SCALE = 512L;
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static const long SCALE2 = SCALE * 2;
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static const long SCALE4 = SCALE * 4;
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static const long SCALE6 = SCALE * 6;
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static const long SCALE60 = SCALE * 60;
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static const long SCALE120 = SCALE * 120;
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static const long SCALE180 = SCALE * 180;
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static const long SCALE240 = SCALE * 240;
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static const long SCALE300 = SCALE * 300;
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static const long SCALE360 = SCALE * 360;
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public:
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gradient_factory(int width, Colour first_colour, Colour last_colour);
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virtual ~gradient_factory() {}
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colour_array create_gradient();
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virtual void convert_from_scaled_rgb(long *const scaled, long *target) = 0;
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virtual void convert_to_scaled_rgb(long *const target, long *scaled) = 0;
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void convert_from_rgb(Colour original, long *array);
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Colour convert_to_rgb(long *const array);
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protected:
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virtual void fix_diff(long *) {}
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static long get_hue(long *const scaled, long chroma, long value);
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static long get_intermediate(long hue, long chroma);
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private:
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int width;
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Colour first_colour;
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Colour last_colour;
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};
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class rgb_gradient_factory : public gradient_factory {
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using gradient_factory::gradient_factory;
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public:
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void convert_from_scaled_rgb(long *const scaled, long *target);
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void convert_to_scaled_rgb(long *const target, long *scaled);
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};
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class hsv_gradient_factory : public gradient_factory {
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using gradient_factory::gradient_factory;
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public:
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void fix_diff(long *diff);
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void convert_from_scaled_rgb(long *const scaled, long *target);
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void convert_to_scaled_rgb(long *const target, long *scaled);
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};
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class hcl_gradient_factory : public gradient_factory {
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using gradient_factory::gradient_factory;
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public:
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void fix_diff(long *diff);
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void convert_from_scaled_rgb(long *const scaled, long *target);
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void convert_to_scaled_rgb(long *const target, long *scaled);
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};
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} // namespace conky
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#endif /* _GRADIENT_H */
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