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Prototype for #395pull/672/head
Timothy Stack
5 years ago
parent
d61f2568d6
commit
b81b35c866
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/**
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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 ON
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* 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 "config.h"
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#include <stdlib.h>
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#include <string>
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#include "yajlpp/yajlpp.hh"
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#include "yajlpp/yajlpp_def.hh"
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#include "styling.hh"
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#include "ansi-palette-json.h"
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#include "xterm-palette-json.h"
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using namespace std;
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static struct json_path_handler term_color_rgb_handler[] = {
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json_path_handler("r")
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.FOR_FIELD(rgb_color, rc_r),
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json_path_handler("g")
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.FOR_FIELD(rgb_color, rc_g),
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json_path_handler("b")
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.FOR_FIELD(rgb_color, rc_b),
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json_path_handler()
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};
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static struct json_path_handler term_color_handler[] = {
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json_path_handler("colorId")
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.FOR_FIELD(term_color, xc_id),
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json_path_handler("name")
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.FOR_FIELD(term_color, xc_name),
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json_path_handler("rgb/")
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.with_obj_provider<rgb_color, term_color>(
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[](const auto &pc, term_color *xc) { return &xc->xc_color; })
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.with_children(term_color_rgb_handler),
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json_path_handler()
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};
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static struct json_path_handler root_color_handler[] = {
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json_path_handler("#/")
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.with_obj_provider<term_color, vector<term_color>>(
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[](const yajlpp_provider_context &ypc, vector<term_color> *palette) {
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palette->resize(ypc.ypc_index + 1);
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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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json_path_handler()
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};
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term_color_palette xterm_colors(xterm_palette_json.bsf_data);
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term_color_palette ansi_colors(ansi_palette_json.bsf_data);
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term_color_palette *ACTIVE_PALETTE = &ansi_colors;
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bool rgb_color::from_str(const string_fragment &color,
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rgb_color &rgb_out,
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std::string &errmsg)
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{
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if (color.empty()) {
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return true;
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}
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if (color[0] == '#') {
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switch (color.length()) {
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case 4:
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if (sscanf(color.data(), "#%1hx%1hx%1hx",
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&rgb_out.rc_r, &rgb_out.rc_g, &rgb_out.rc_b) == 3) {
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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 true;
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}
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break;
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case 7:
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if (sscanf(color.data(), "#%2hx%2hx%2hx",
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&rgb_out.rc_r, &rgb_out.rc_g, &rgb_out.rc_b) == 3) {
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return true;
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}
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break;
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}
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errmsg = "Could not parse color: " + color.to_string();
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return false;
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}
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for (const auto &xc : xterm_colors.tc_palette) {
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if (color.iequal(xc.xc_name)) {
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rgb_out = xc.xc_color;
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return true;
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}
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}
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errmsg = "Unknown color: '" + color.to_string() +
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"'. See https://jonasjacek.github.io/colors/ for a list of supported color names";
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return false;
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}
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term_color_palette::term_color_palette(const unsigned char *json)
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{
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yajlpp_parse_context ypc_xterm("palette.json", 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
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.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, strlen((const char *) 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 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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