mirror of https://github.com/tstack/lnav
[ansi] add support for 256/rgb colors
Tim Stack
4 months ago
parent
96e6950884
commit
c0e3931729
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/**
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* Copyright (c) 2024, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <cmath>
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#include "color_spaces.hh"
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#include "config.h"
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bool
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rgb_color::operator<(const rgb_color& rhs) const
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{
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if (rc_r < rhs.rc_r)
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return true;
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if (rhs.rc_r < rc_r)
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return false;
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if (rc_g < rhs.rc_g)
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return true;
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if (rhs.rc_g < rc_g)
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return false;
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return rc_b < rhs.rc_b;
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}
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bool
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rgb_color::operator>(const rgb_color& rhs) const
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{
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return rhs < *this;
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}
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bool
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rgb_color::operator<=(const rgb_color& rhs) const
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{
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return !(rhs < *this);
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}
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bool
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rgb_color::operator>=(const rgb_color& rhs) const
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{
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return !(*this < rhs);
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}
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bool
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rgb_color::operator==(const rgb_color& rhs) const
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{
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return rc_r == rhs.rc_r && rc_g == rhs.rc_g && rc_b == rhs.rc_b;
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}
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bool
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rgb_color::operator!=(const rgb_color& rhs) const
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{
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return !(rhs == *this);
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}
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lab_color::lab_color(const rgb_color& rgb)
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{
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double r = rgb.rc_r / 255.0, g = rgb.rc_g / 255.0, b = rgb.rc_b / 255.0, x,
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y, z;
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r = (r > 0.04045) ? pow((r + 0.055) / 1.055, 2.4) : r / 12.92;
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g = (g > 0.04045) ? pow((g + 0.055) / 1.055, 2.4) : g / 12.92;
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b = (b > 0.04045) ? pow((b + 0.055) / 1.055, 2.4) : b / 12.92;
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x = (r * 0.4124 + g * 0.3576 + b * 0.1805) / 0.95047;
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y = (r * 0.2126 + g * 0.7152 + b * 0.0722) / 1.00000;
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z = (r * 0.0193 + g * 0.1192 + b * 0.9505) / 1.08883;
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x = (x > 0.008856) ? pow(x, 1.0 / 3.0) : (7.787 * x) + 16.0 / 116.0;
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y = (y > 0.008856) ? pow(y, 1.0 / 3.0) : (7.787 * y) + 16.0 / 116.0;
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z = (z > 0.008856) ? pow(z, 1.0 / 3.0) : (7.787 * z) + 16.0 / 116.0;
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this->lc_l = (116.0 * y) - 16;
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this->lc_a = 500.0 * (x - y);
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this->lc_b = 200.0 * (y - z);
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}
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double
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lab_color::deltaE(const lab_color& other) const
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{
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double deltaL = this->lc_l - other.lc_l;
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double deltaA = this->lc_a - other.lc_a;
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double deltaB = this->lc_b - other.lc_b;
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double c1 = sqrt(this->lc_a * this->lc_a + this->lc_b * this->lc_b);
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double c2 = sqrt(other.lc_a * other.lc_a + other.lc_b * other.lc_b);
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double deltaC = c1 - c2;
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double deltaH = deltaA * deltaA + deltaB * deltaB - deltaC * deltaC;
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deltaH = deltaH < 0.0 ? 0.0 : sqrt(deltaH);
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double sc = 1.0 + 0.045 * c1;
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double sh = 1.0 + 0.015 * c1;
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double deltaLKlsl = deltaL / (1.0);
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double deltaCkcsc = deltaC / (sc);
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double deltaHkhsh = deltaH / (sh);
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double i = deltaLKlsl * deltaLKlsl + deltaCkcsc * deltaCkcsc
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+ deltaHkhsh * deltaHkhsh;
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return i < 0.0 ? 0.0 : sqrt(i);
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}
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bool
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lab_color::operator<(const lab_color& rhs) const
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{
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if (lc_l < rhs.lc_l)
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return true;
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if (rhs.lc_l < lc_l)
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return false;
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if (lc_a < rhs.lc_a)
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return true;
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if (rhs.lc_a < lc_a)
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return false;
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return lc_b < rhs.lc_b;
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}
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bool
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lab_color::operator>(const lab_color& rhs) const
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{
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return rhs < *this;
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}
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bool
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lab_color::operator<=(const lab_color& rhs) const
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{
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return !(rhs < *this);
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}
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bool
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lab_color::operator>=(const lab_color& rhs) const
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{
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return !(*this < rhs);
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}
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bool
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lab_color::operator==(const lab_color& rhs) const
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{
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return lc_l == rhs.lc_l && lc_a == rhs.lc_a && lc_b == rhs.lc_b;
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}
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bool
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lab_color::operator!=(const lab_color& rhs) const
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{
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return !(rhs == *this);
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}
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@ -0,0 +1,94 @@
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/**
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* Copyright (c) 2024, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
|
||||
*
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||||
* * Redistributions of source code must retain the above copyright notice, this
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||||
* list of conditions and the following disclaimer.
|
||||
* * Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation
|
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* and/or other materials provided with the distribution.
|
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* * Neither the name of Timothy Stack nor the names of its contributors
|
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
|
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef color_spaces_hh
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#define color_spaces_hh
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struct rgb_color {
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explicit rgb_color(short r = -1, short g = -1, short b = -1)
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: rc_r(r), rc_g(g), rc_b(b)
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{
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}
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bool empty() const
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{
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return this->rc_r == -1 && this->rc_g == -1 && this->rc_b == -1;
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}
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bool operator==(const rgb_color& rhs) const;
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bool operator!=(const rgb_color& rhs) const;
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bool operator<(const rgb_color& rhs) const;
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bool operator>(const rgb_color& rhs) const;
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bool operator<=(const rgb_color& rhs) const;
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bool operator>=(const rgb_color& rhs) const;
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short rc_r;
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short rc_g;
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short rc_b;
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};
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struct lab_color {
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lab_color() : lc_l(0), lc_a(0), lc_b(0) {}
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explicit lab_color(const rgb_color& rgb);
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double deltaE(const lab_color& other) const;
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lab_color& operator=(const lab_color& other)
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{
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this->lc_l = other.lc_l;
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this->lc_a = other.lc_a;
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this->lc_b = other.lc_b;
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return *this;
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}
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bool operator==(const lab_color& rhs) const;
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bool operator!=(const lab_color& rhs) const;
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bool operator<(const lab_color& rhs) const;
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bool operator>(const lab_color& rhs) const;
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bool operator<=(const lab_color& rhs) const;
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bool operator>=(const lab_color& rhs) const;
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double lc_l;
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double lc_a;
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double lc_b;
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};
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#endif
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@ -0,0 +1,40 @@
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/**
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* Copyright (c) 2024, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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||||
* modification, are permitted provided that the following conditions are met:
|
||||
*
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||||
* * Redistributions of source code must retain the above copyright notice, this
|
||||
* list of conditions and the following disclaimer.
|
||||
* * Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation
|
||||
* and/or other materials provided with the distribution.
|
||||
* * Neither the name of Timothy Stack nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
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||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
|
||||
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
|
||||
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
||||
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef from_trait_hh
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#define from_trait_hh
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#include <string>
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#include "result.h"
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template<typename R, typename S>
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Result<R, std::string> from(S v);
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#endif
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