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247 lines
7.0 KiB
C++
247 lines
7.0 KiB
C++
/**
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* Copyright (c) 2019, 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 <string>
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#include "styling.hh"
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#include "ansi-palette-json.h"
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#include "config.h"
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#include "fmt/format.h"
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#include "xterm-palette-json.h"
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#include "yajlpp/yajlpp.hh"
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#include "yajlpp/yajlpp_def.hh"
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static const struct json_path_container term_color_rgb_handler = {
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yajlpp::property_handler("r").for_field(&rgb_color::rc_r),
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yajlpp::property_handler("g").for_field(&rgb_color::rc_g),
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yajlpp::property_handler("b").for_field(&rgb_color::rc_b),
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};
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static const struct json_path_container term_color_handler = {
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yajlpp::property_handler("colorId").for_field(&term_color::xc_id),
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yajlpp::property_handler("name").for_field(&term_color::xc_name),
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yajlpp::property_handler("hexString").for_field(&term_color::xc_hex),
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yajlpp::property_handler("rgb")
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.for_child(&term_color::xc_color)
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.with_children(term_color_rgb_handler),
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};
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static const struct json_path_container root_color_handler = {
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yajlpp::property_handler("#")
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.with_obj_provider<term_color, std::vector<term_color>>(
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[](const yajlpp_provider_context& ypc,
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std::vector<term_color>* palette) {
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if (ypc.ypc_index >= palette->size()) {
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palette->resize(ypc.ypc_index + 1);
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}
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return &((*palette)[ypc.ypc_index]);
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})
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.with_children(term_color_handler),
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};
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term_color_palette*
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xterm_colors()
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{
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static term_color_palette retval(xterm_palette_json.get_name(),
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xterm_palette_json.to_string_fragment());
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return &retval;
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}
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term_color_palette*
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ansi_colors()
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{
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static term_color_palette retval(ansi_palette_json.get_name(),
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ansi_palette_json.to_string_fragment());
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return &retval;
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}
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Result<rgb_color, std::string>
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rgb_color::from_str(const string_fragment& sf)
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{
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if (sf.empty()) {
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return Ok(rgb_color());
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}
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rgb_color rgb_out;
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if (sf[0] == '#') {
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switch (sf.length()) {
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case 4:
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if (sscanf(sf.data(),
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"#%1hx%1hx%1hx",
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&rgb_out.rc_r,
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&rgb_out.rc_g,
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&rgb_out.rc_b)
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== 3)
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{
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rgb_out.rc_r |= rgb_out.rc_r << 4;
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rgb_out.rc_g |= rgb_out.rc_g << 4;
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rgb_out.rc_b |= rgb_out.rc_b << 4;
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return Ok(rgb_out);
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}
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break;
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case 7:
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if (sscanf(sf.data(),
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"#%2hx%2hx%2hx",
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&rgb_out.rc_r,
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&rgb_out.rc_g,
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&rgb_out.rc_b)
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== 3)
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{
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return Ok(rgb_out);
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}
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break;
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}
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return Err(fmt::format(FMT_STRING("Could not parse color: {}"), sf));
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}
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for (const auto& xc : xterm_colors()->tc_palette) {
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if (sf.iequal(xc.xc_name)) {
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return Ok(xc.xc_color);
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}
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}
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return Err(fmt::format(
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FMT_STRING(
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"Unknown color: '{}'. "
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"See https://jonasjacek.github.io/colors/ for a list of supported "
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"color names"),
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sf));
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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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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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term_color_palette::term_color_palette(const char* name,
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const string_fragment& json)
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{
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yajlpp_parse_context ypc_xterm(intern_string::lookup(name),
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&root_color_handler);
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yajl_handle handle;
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handle = yajl_alloc(&ypc_xterm.ypc_callbacks, nullptr, &ypc_xterm);
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ypc_xterm.with_ignore_unused(true)
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.with_obj(this->tc_palette)
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.with_handle(handle);
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yajl_status st = ypc_xterm.parse(json);
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ensure(st == yajl_status_ok);
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st = ypc_xterm.complete_parse();
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ensure(st == yajl_status_ok);
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yajl_free(handle);
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for (auto& xc : this->tc_palette) {
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xc.xc_lab_color = lab_color(xc.xc_color);
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}
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}
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short
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term_color_palette::match_color(const lab_color& to_match)
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{
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double lowest = 1000.0;
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short lowest_id = -1;
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for (auto& xc : this->tc_palette) {
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double xc_delta = xc.xc_lab_color.deltaE(to_match);
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if (lowest_id == -1) {
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lowest = xc_delta;
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lowest_id = xc.xc_id;
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continue;
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}
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if (xc_delta < lowest) {
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lowest = xc_delta;
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lowest_id = xc.xc_id;
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}
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}
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return lowest_id;
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}
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namespace styling {
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Result<color_unit, std::string>
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color_unit::from_str(const string_fragment& sf)
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{
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if (sf == "semantic()") {
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return Ok(color_unit{semantic{}});
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}
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auto retval = TRY(rgb_color::from_str(sf));
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return Ok(color_unit{retval});
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}
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} // namespace styling
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