satdump/src-core/common/widgets/notated_num.cpp

#include "notated_num.h"
#include "common/dsp_source_sink/format_notated.h"
#include "common/rimgui.h"
#include "logger.h"
#include <regex>

namespace satdump
{
    namespace widgets
    {
        template <typename T>
        NotatedNum<T>::NotatedNum(std::string d_id, T input_int, std::string units) : val{input_int}, d_id{d_id}, units{units}
        {
            last_display = display_val = format_notated(val, units);
        }

        template <typename T>
        NotatedNum<T>::~NotatedNum()
        {
        }

        template <typename T>
        void NotatedNum<T>::parse_input()
        {
            // Clean up string
            display_val.erase(std::remove_if(display_val.begin(), display_val.end(), ::isspace), display_val.end());
            std::regex regexp(units, std::regex_constants::icase);
            display_val = std::regex_replace(display_val, regexp, "");

            // Sanity check
            if (display_val.empty())
            {
                display_val = last_display;
                return;
            }

            // Get order of magnitude suffix, if present
            T multiplier = 1;
            bool had_suffix = true;
            const char suffix = toupper(display_val.back());
            if (suffix == 'K')
                multiplier = 1e3;
            else if (suffix == 'M')
                multiplier = 1e6;
            else if (suffix == 'G')
                multiplier = 1e9;
            else if constexpr (std::is_same<T, int32_t>::value)
                had_suffix = false;
            else
            {
                if (suffix == 'T')
                    multiplier = 1e12;
                else if (suffix == 'P')
                    multiplier = 1e15;
                else
                    had_suffix = false;
            }

            // Remove suffix
            if (had_suffix)
                display_val.pop_back();

            // Try to parse the rest of it as a number
            T decoded_int;
            try
            {
                decoded_int = std::stod(display_val) * multiplier;
            }
            catch (std::exception &e)
            {
                logger->trace("Ignoring bad int input - " + std::string(e.what()));
                display_val = last_display;
                return;
            }

            // Value is good - update and re-render
            val = decoded_int;
            last_display = display_val = format_notated(val, units);
        }

        template <typename T>
        bool NotatedNum<T>::draw()
        {
            RImGui::InputText(d_id.c_str(), &display_val, ImGuiInputTextFlags_AutoSelectAll);
            bool retval = RImGui::IsItemDeactivatedAfterEdit();
            if (retval)
                parse_input();

            return retval;
        }

        template <typename T>
        T NotatedNum<T>::get()
        {
            return val;
        }

        template <typename T>
        void NotatedNum<T>::set(T input_int)
        {
            val = input_int;
            last_display = display_val = format_notated(val, units);
        }

        template class NotatedNum<int>;
        template class NotatedNum<uint64_t>;
        template class NotatedNum<int64_t>;
        template class NotatedNum<double>;
    } // namespace widgets
} // namespace satdump