Method drawValuesAtMouseCursor

source/Gui/StatisticsWindow.cpp:776–843

}

void StatisticsWindow::drawValuesAtMouseCursor(
    double const* dataPoints,
    double const* timePoints,
    double const* systemClock,
    int count,
    double startTime,
    double endTime,
    double upperBound,
    int fracPartDecimals)
{
    auto constexpr stride = sizeof(DataPointCollection) / sizeof(double);

    auto mousePos = ImPlot::GetPlotMousePos();
    mousePos.x = std::max(startTime, std::min(endTime, mousePos.x));
    mousePos.y = dataPoints[0];

    auto dateTimeString =
        [&] {
        if (systemClock == nullptr) {
            for (int i = 1; i < count; ++i) {
                if (timePoints[i * stride] > mousePos.x) {
                    mousePos.y = dataPoints[i * stride];
                    break;
                }
            }
            return std::string();
        }
        auto systemClockEntry = systemClock[0];
        for (int i = 1; i < count; ++i) {
            if (timePoints[i * stride] > mousePos.x) {
                mousePos.y = dataPoints[i * stride];
                systemClockEntry = systemClock[i * stride];
                break;
            }
        }
        mousePos.y = std::max(0.0, std::min(upperBound, mousePos.y));

        return systemClockEntry != 0 ? convertSystemClockToString(systemClockEntry) : std::string("-");
    }();

    ImPlot::PushStyleColor(ImPlotCol_InlayText, ImColor::HSV(0.0f, 0.0f, 1.0f).Value);
    ImPlot::PlotText(ICON_FA_GENDERLESS, mousePos.x, mousePos.y, {scale(1.0f), scale(2.0f)});
    ImPlot::PopStyleColor();

    ImPlot::PushStyleColor(ImPlotCol_Line, ImColor::HSV(0.0f, 0.0f, 1.0f).Value);
    ImPlot::PlotInfLines("", &mousePos.x, 1);
    ImPlot::PopStyleColor();

    char label[256];
    auto leftSideFactor = mousePos.x > (startTime + endTime) / 2 ? -1.0f : 1.0f;
    if (!dateTimeString.empty()) {
        snprintf(
            label,
            sizeof(label),
            "Time step: %s\nTimestamp: %s\nValue: %s",
            StringHelper::format(mousePos.x, 0).c_str(),
            dateTimeString.c_str(),
            StringHelper::format(mousePos.y, fracPartDecimals).c_str());