Method step

plugins/Cardinal/src/HostMIDI-Map.cpp:508–567

    }

    void step() override
    {
        if (module == nullptr)
            return;

        // Set bgColor and selected state
        if (module->learningId == id)
        {
            bgColor = color;
            bgColor.a = 0.125f;

            if (ParamWidget* const touchedParam = APP->scene->rack->touchedParam)
            {
                if (module->nextLearningId == id)
                {
                    module->nextLearningId = -1;
                    lastTouchedParam = touchedParam;
                }
                else if (lastTouchedParam != touchedParam)
                {
                    const int64_t moduleId = touchedParam->module->id;
                    const int paramId = touchedParam->paramId;
                    module->learnParam(id, moduleId, paramId);
                    lastTouchedParam = touchedParam;
                }
            }
            else
            {
                lastTouchedParam = nullptr;
            }
        }
        else
        {
            bgColor = nvgRGB(0, 0, 0);
        }

        // Set text
        text.clear();

        // mapped
        if (module->ccs[id] >= 0)
            text += string::f("CC%02d: ", module->ccs[id]);
        if (module->paramHandles[id].moduleId >= 0)
            text += getParamName();

        // Set text color
        if (text.empty() && module->learningId != id)
            color.a = 0.75f;
        else
            color.a = 1.0f;

        // unmapped
        if (text.empty())
        {
            if (module->learningId == id)
                text = "Mapping...";
            else
                text = module->mapLen == 1 ? "Click here to map" : "Unmapped";