mirror of
https://github.com/Llewellynvdm/conky.git
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122 lines
3.1 KiB
C++
122 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 _COLOURS_H
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#define _COLOURS_H
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#include <memory>
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#include <string>
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#include <cassert>
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#include <climits>
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#ifdef BUILD_X11
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#include "x11.h"
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#endif /* BUILD_X11 */
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#ifdef BUILD_NCURSES
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#include <ncurses.h>
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#endif
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unsigned int adjust_colours(unsigned int);
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struct Colour {
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uint8_t red;
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uint8_t green;
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uint8_t blue;
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uint8_t alpha;
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public:
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// Express the color as a 32-bit ARGB integer (alpha in MSB).
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uint32_t to_argb32(void) {
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uint32_t out;
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out = alpha << 24 | red << 16 | green << 8 | blue;
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return out;
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}
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// Construct from a 32-bit ARGB integer (alpha in MSB).
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static Colour from_argb32(uint32_t argb);
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#ifdef BUILD_X11
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unsigned long to_x11_color(Display *display, int screen) {
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if(display == nullptr) {
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/* cannot work if display is not open */
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return 0;
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}
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XColor xcolor;
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xcolor.pixel = 0;
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xcolor.red = red * 257;
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xcolor.green = green * 257;
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xcolor.blue = blue * 257;
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if (XAllocColor(display, DefaultColormap(display, screen), &xcolor) == 0) {
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//NORM_ERR("can't allocate X color");
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return 0;
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}
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return static_cast<unsigned long>(xcolor.pixel);
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}
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#endif /* BUILD_X11 */
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#ifdef BUILD_NCURSES
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static Colour from_ncurses(int nccolor);
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// Find the nearest ncurses color.
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int to_ncurses() {
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int nccolors[] = {
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COLOR_WHITE,
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COLOR_RED,
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COLOR_GREEN,
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COLOR_YELLOW,
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COLOR_BLUE,
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COLOR_MAGENTA,
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COLOR_CYAN,
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COLOR_BLACK,
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};
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int mindiff = INT_MAX;
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int best_nccolor = nccolors[0];
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for (int nccolor : nccolors) {
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Colour other = Colour::from_ncurses(nccolor);
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int diff = abs(red - other.red) +
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abs(green - other.green) +
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abs(blue - other.blue);
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if (diff < mindiff) {
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mindiff = diff;
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best_nccolor = nccolor;
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}
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}
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return best_nccolor;
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}
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#endif /* BUILD_NCURSES */
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};
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Colour get_x11_color(const std::string &colour);
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// XXX: when everyone uses C++ strings, remove this C version
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Colour get_x11_color(const char *);
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#endif /* _COLOURS_H */
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