105 lines
3.8 KiB
C++
105 lines
3.8 KiB
C++
#ifndef __COMFORTABLE_SWIPE__service_buffer__
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#define __COMFORTABLE_SWIPE__service_buffer__
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/*
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Comfortable Swipe
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by Rico Tiongson
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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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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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#include <string> // std::stoi, std::stof
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#include <cstdio> // std::fgets_unlocked, stdin
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#include <regex> // std::regex, std::regex_match, std::cmatch
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#include "../index.hpp"
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/**
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* Starts the comfortable-swipe service by buffering libinput debug-events.
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*/
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namespace comfortable_swipe::service
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{
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void buffer()
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{
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// read config file
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auto config = comfortable_swipe::util::read_config_file(comfortable_swipe::util::conf_filename());
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// pre-compile regex patterns
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static const std::regex gesture_swipe_begin(comfortable_swipe::gesture::swipe_gesture::GESTURE_BEGIN_REGEX_PATTERN);
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static const std::regex gesture_swipe_update(comfortable_swipe::gesture::swipe_gesture::GESTURE_UPDATE_REGEX_PATTERN);
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static const std::regex gesture_swipe_end(comfortable_swipe::gesture::swipe_gesture::GESTURE_END_REGEX_PATTERN);
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// initialize swipe gesture handler
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comfortable_swipe::gesture::swipe_gesture swipe
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(
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config.count("threshold") ? std::stof(config["threshold"]) : 0.0,
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config["left3"].c_str(),
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config["left4"].c_str(),
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config["right3"].c_str(),
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config["right4"].c_str(),
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config["up3"].c_str(),
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config["up4"].c_str(),
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config["down3"].c_str(),
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config["down4"].c_str()
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);
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// prepare data containers
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static const int MAX_LINE_LENGTH = 256;
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static char data[MAX_LINE_LENGTH];
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static std::cmatch matches;
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// optimization flag for checking if GESTURE_SWIPE_BEGIN was dispatched
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bool flag_swiping = false;
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// start reading lines from input one by one
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while (fgets_unlocked(data, MAX_LINE_LENGTH, stdin) != NULL)
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{
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if (flag_swiping)
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{
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// currently swiping
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if (std::regex_match(data, matches, gesture_swipe_update) != 0)
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{
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// update swipe
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swipe.fingers = std::stoi(matches[1]);
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swipe.dx = std::stof(matches[2]);
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swipe.dy = std::stof(matches[3]);
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swipe.udx = std::stof(matches[4]);
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swipe.udy = std::stof(matches[5]);
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swipe.update();
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}
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else if (std::regex_match(data, matches, gesture_swipe_end) != 0)
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{
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// end swipe
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flag_swiping = false;
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swipe.fingers = std::stoi(matches[1]);
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swipe.end();
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}
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}
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else /* !flag_swiping */
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{
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// not swiping, check if swipe will begin
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if (std::regex_match(data, matches, gesture_swipe_begin) != 0)
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{
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// begin swipe
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flag_swiping = true;
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swipe.fingers = std::stoi(matches[1]);
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swipe.begin();
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}
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}
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}
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}
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}
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#endif /* __COMFORTABLE_SWIPE__service_buffer__ */
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