89 lines
2.9 KiB
C++
89 lines
2.9 KiB
C++
#ifndef __COMFORTABLE_SWIPE__service_buffer__
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#define __COMFORTABLE_SWIPE__service_buffer__
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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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void comfortable_swipe::service::buffer()
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{
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// import utility methods
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using comfortable_swipe::util::read_config_file;
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using comfortable_swipe::util::conf_filename;
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using comfortable_swipe::gesture::swipe_gesture;
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// import regex patterns
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using comfortable_swipe::util::GESTURE_SWIPE_BEGIN_REGEX_PATTERN;
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using comfortable_swipe::util::GESTURE_SWIPE_UPDATE_REGEX_PATTERN;
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using comfortable_swipe::util::GESTURE_SWIPE_END_REGEX_PATTERN;
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// pre-compile regex patterns
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static const std::regex gesture_begin(GESTURE_SWIPE_BEGIN_REGEX_PATTERN);
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static const std::regex gesture_update(GESTURE_SWIPE_UPDATE_REGEX_PATTERN);
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static const std::regex gesture_end(GESTURE_SWIPE_END_REGEX_PATTERN);
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// read config file
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auto config = read_config_file(conf_filename());
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// initialize swipegesture handler
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swipe_gesture swipe
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(
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config.count("threshold") ? std::atof(config["threshold"].data()) : 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_begin = 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_begin)
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{
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if (std::regex_match(data, matches, gesture_begin) != 0)
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{
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swipe.fingers = std::stoi(matches[1]);
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swipe.begin();
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flag_begin = true;
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}
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}
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else /* flag_begin == true */
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{
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if (std::regex_match(data, matches, gesture_update) != 0)
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{
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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_end) != 0)
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{
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swipe.fingers = std::stoi(matches[1]);
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swipe.end();
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flag_begin = false;
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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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