sdrangel/sdrbase/dsp/glscopesettings.cpp

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2019-2021 Edouard Griffiths, F4EXB <f4exb06@gmail.com>          //
// Copyright (C) 2023 Jon Beniston, M7RCE <jon@beniston.com>                     //
//                                                                               //
// This program is free software; you can redistribute it and/or modify          //
// it under the terms of the GNU General Public License as published by          //
// the Free Software Foundation as version 3 of the License, or                  //
// (at your option) any later version.                                           //
//                                                                               //
// This program is distributed in the hope that it will be useful,               //
// but WITHOUT ANY WARRANTY; without even the implied warranty of                //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                  //
// GNU General Public License V3 for more details.                               //
//                                                                               //
// You should have received a copy of the GNU General Public License             //
// along with this program. If not, see <http://www.gnu.org/licenses/>.          //
///////////////////////////////////////////////////////////////////////////////////

#include <QColor>

#include "util/simpleserializer.h"
#include "glscopesettings.h"

#include "SWGGLScope.h"

const double GLScopeSettings::AMPS[27] = {
        2e-1, 1e-1, 5e-2,
        2e-2, 1e-2, 5e-3,
        2e-3, 1e-3, 5e-4,
        2e-4, 1e-4, 5e-5,
        2e-5, 1e-5, 5e-6,
        2e-6, 1e-6, 5e-7,
        2e-7, 1e-7, 5e-8,
        2e-8, 1e-8, 5e-9,
        2e-9, 1e-9, 5e-10,
};

GLScopeSettings::GLScopeSettings()
{
    resetToDefaults();
}

GLScopeSettings::GLScopeSettings(const GLScopeSettings& t)
{
    resetToDefaults();

    m_tracesData = t.m_tracesData;
    m_triggersData = t.m_triggersData;
    m_displayMode = t.m_displayMode;
    m_traceIntensity = t.m_traceIntensity;
    m_gridIntensity = t.m_gridIntensity;
    m_time = t.m_time;
    m_timeOfs = t.m_timeOfs;
    m_traceLenMult = t.m_traceLenMult;
    m_trigPre = t.m_trigPre;
}

GLScopeSettings::~GLScopeSettings()
{}

void GLScopeSettings::resetToDefaults()
{
    m_displayMode = DisplayX;
    m_traceIntensity = 50;
    m_gridIntensity = 10;
    m_time = 1;
    m_timeOfs = 0;
    m_traceLenMult = 1;
    m_trigPre = 0;
    m_freerun = true;
}

QByteArray GLScopeSettings::serialize() const
{
    SimpleSerializer s(1);

    // first row
    s.writeS32(1, (int) m_displayMode);
    s.writeS32(2, m_traceIntensity);
    s.writeS32(3, m_gridIntensity);
    s.writeS32(4, m_time);
    // s.writeS32(5, m_timeOfs);
    s.writeS32(6, m_traceLenMult);
    s.writeBool(7, m_freerun);

    std::vector<TraceData>::const_iterator traceDataIt = m_tracesData.begin();
    unsigned int i = 0;

    for (; traceDataIt != m_tracesData.end(); ++traceDataIt, i++)
    {
        if (20 + 16*i > 200) {
            break;
        }

        s.writeS32(20 + 16*i, (int) traceDataIt->m_projectionType);
        s.writeFloat(21 + 16*i, traceDataIt->m_amp);
        s.writeFloat(22 + 16*i, traceDataIt->m_ofs);
        s.writeS32(24 + 16*i, traceDataIt->m_traceDelayCoarse);
        s.writeS32(25 + 16*i, traceDataIt->m_traceDelayFine);
        s.writeFloat(26 + 16*i, traceDataIt->m_traceColorR);
        s.writeFloat(27 + 16*i, traceDataIt->m_traceColorG);
        s.writeFloat(28 + 16*i, traceDataIt->m_traceColorB);
        s.writeU32(29 + 16*i, traceDataIt->m_streamIndex);
    }

    s.writeU32(10, i);
    s.writeU32(200, m_triggersData.size());
    s.writeS32(201, m_trigPre);
    std::vector<TriggerData>::const_iterator triggerDataIt = m_triggersData.begin();
    i = 0;

    for (; triggerDataIt != m_triggersData.end(); ++triggerDataIt, i++)
    {
        s.writeS32(210 + 16*i, (int) triggerDataIt->m_projectionType);
        s.writeS32(211 + 16*i, triggerDataIt->m_triggerRepeat);
        s.writeBool(212 + 16*i, triggerDataIt->m_triggerPositiveEdge);
        s.writeBool(213 + 16*i, triggerDataIt->m_triggerBothEdges);
        s.writeS32(214 + 16*i, triggerDataIt->m_triggerLevelCoarse);
        s.writeS32(215 + 16*i, triggerDataIt->m_triggerLevelFine);
        s.writeS32(216 + 16*i, triggerDataIt->m_triggerDelayCoarse);
        s.writeS32(217 + 16*i, triggerDataIt->m_triggerDelayFine);
        s.writeFloat(218 + 16*i, triggerDataIt->m_triggerColorR);
        s.writeFloat(219 + 16*i, triggerDataIt->m_triggerColorG);
        s.writeFloat(220 + 16*i, triggerDataIt->m_triggerColorB);
        s.writeU32(221 + 16*i, triggerDataIt->m_triggerHoldoff);
        s.writeU32(222 + 16*i, triggerDataIt->m_streamIndex);
    }

    return s.final();
}

bool GLScopeSettings::deserialize(const QByteArray& data)
{
    SimpleDeserializer d(data);

    if(!d.isValid()) {
        resetToDefaults();
        return false;
    }

    if (d.getVersion() == 1)
    {
        int intValue;
        uint32_t uintValue;
        bool boolValue;

        d.readS32(1, &intValue, (int) DisplayX);
        m_displayMode = (DisplayMode) intValue;
        d.readS32(2, &m_traceIntensity, 50);
        d.readS32(3, &m_gridIntensity, 10);
        d.readS32(4, &m_time, 1);
        // d.readS32(5, &m_timeOfs, 0);
        d.readS32(6, &m_traceLenMult, 1);
        d.readBool(7, &m_freerun, true);
        d.readS32(201, &m_trigPre, 0);

        uint32_t nbTracesSaved;
        d.readU32(10, &nbTracesSaved, 1);
        m_tracesData.clear();
        float r, g, b;

        for (unsigned int iTrace = 0; iTrace < nbTracesSaved; iTrace++)
        {
            if (20 + 16*iTrace > 200) {
                break;
            }

            m_tracesData.push_back(TraceData());

            d.readS32(20 + 16*iTrace, &intValue, 0);
            m_tracesData.back().m_projectionType = (Projector::ProjectionType) intValue;
            d.readFloat(21 + 16*iTrace, &m_tracesData.back().m_amp, 1.0f);
            d.readFloat(22 + 16*iTrace, &m_tracesData.back().m_ofs, 0.0f);
            d.readS32(24 + 16*iTrace, &intValue, 0);
            m_tracesData.back().m_traceDelayCoarse = intValue;
            d.readS32(25 + 16*iTrace, &intValue, 0);
            m_tracesData.back().m_traceDelayFine = intValue;
            d.readFloat(26 + 16*iTrace, &r, 1.0f);
            d.readFloat(27 + 16*iTrace, &g, 1.0f);
            d.readFloat(28 + 16*iTrace, &b, 1.0f);
            m_tracesData.back().m_traceColorR = r;
            m_tracesData.back().m_traceColorG = g;
            m_tracesData.back().m_traceColorB = b;
            m_tracesData.back().m_traceColor.setRedF(r);
            m_tracesData.back().m_traceColor.setGreenF(g);
            m_tracesData.back().m_traceColor.setBlueF(b);
            d.readU32(29 + 16*iTrace, &uintValue, 0);
            m_tracesData.back().m_streamIndex = uintValue;
        }

        uint32_t nbTriggersSaved;
        d.readU32(200, &nbTriggersSaved, 1);
        m_triggersData.clear();

        for (unsigned int iTrigger = 0; iTrigger < nbTriggersSaved; iTrigger++)
        {
            m_triggersData.push_back(TriggerData());

            d.readS32(210 + 16*iTrigger, &intValue, 0);
            m_triggersData.back().m_projectionType = (Projector::ProjectionType) intValue;
            d.readS32(211 + 16*iTrigger, &intValue, 1);
            m_triggersData.back().m_triggerRepeat = intValue;
            d.readBool(212 + 16*iTrigger, &boolValue, true);
            m_triggersData.back().m_triggerPositiveEdge = boolValue;
            d.readBool(213 + 16*iTrigger, &boolValue, false);
            m_triggersData.back().m_triggerBothEdges = boolValue;
            d.readS32(214 + 16*iTrigger, &intValue, 1);
            m_triggersData.back().m_triggerLevelCoarse = intValue;
            d.readS32(215 + 16*iTrigger, &intValue, 1);
            m_triggersData.back().m_triggerLevelFine = intValue;
            d.readS32(216 + 16*iTrigger, &intValue, 1);
            m_triggersData.back().m_triggerDelayCoarse = intValue;
            d.readS32(217 + 16*iTrigger, &intValue, 1);
            m_triggersData.back().m_triggerDelayFine = intValue;
            d.readFloat(218 + 16*iTrigger, &r, 1.0f);
            d.readFloat(219 + 16*iTrigger, &g, 1.0f);
            d.readFloat(220 + 16*iTrigger, &b, 1.0f);
            m_triggersData.back().m_triggerColorR = r;
            m_triggersData.back().m_triggerColorG = g;
            m_triggersData.back().m_triggerColorB = b;
            m_triggersData.back().m_triggerColor.setRedF(r);
            m_triggersData.back().m_triggerColor.setGreenF(g);
            m_triggersData.back().m_triggerColor.setBlueF(b);
            d.readU32(221 + 16*iTrigger, &uintValue, 1);
            m_triggersData.back().m_triggerHoldoff = uintValue;
            d.readU32(222 + 16*iTrigger, &uintValue, 0);
            m_triggersData.back().m_streamIndex = uintValue;
        }

        return true;
    }
    else
    {
        resetToDefaults();
        return false;
    }
}

void GLScopeSettings::formatTo(SWGSDRangel::SWGObject *swgObject) const
{
    SWGSDRangel::SWGGLScope *swgScope = static_cast<SWGSDRangel::SWGGLScope *>(swgObject);

    swgScope->setDisplayMode(m_displayMode);
    swgScope->setGridIntensity(m_gridIntensity);
    swgScope->setTime(m_time);
    swgScope->setTimeOfs(m_timeOfs);
    swgScope->setTraceIntensity(m_traceIntensity);
    swgScope->setTraceLenMult(m_traceLenMult);
    swgScope->setTrigPre(m_trigPre);

    // array of traces
    swgScope->setTracesData(new QList<SWGSDRangel::SWGTraceData *>);
    std::vector<GLScopeSettings::TraceData>::const_iterator traceIt = m_tracesData.begin();

    for (; traceIt != m_tracesData.end(); ++traceIt)
    {
        swgScope->getTracesData()->append(new SWGSDRangel::SWGTraceData);
        swgScope->getTracesData()->back()->setStreamIndex(traceIt->m_streamIndex);
        swgScope->getTracesData()->back()->setAmp(traceIt->m_amp);
        swgScope->getTracesData()->back()->setHasTextOverlay(traceIt->m_hasTextOverlay ? 1 : 0);
        swgScope->getTracesData()->back()->setStreamIndex(traceIt->m_streamIndex);
        swgScope->getTracesData()->back()->setOfs(traceIt->m_ofs);
        swgScope->getTracesData()->back()->setProjectionType((int) traceIt->m_projectionType);
        swgScope->getTracesData()->back()->setTextOverlay(new QString(traceIt->m_textOverlay));
        swgScope->getTracesData()->back()->setTraceColor(qColorToInt(traceIt->m_traceColor));
        swgScope->getTracesData()->back()->setTraceColorB(traceIt->m_traceColorB);
        swgScope->getTracesData()->back()->setTraceColorG(traceIt->m_traceColorG);
        swgScope->getTracesData()->back()->setTraceColorR(traceIt->m_traceColorR);
        swgScope->getTracesData()->back()->setTraceDelay(traceIt->m_traceDelay);
        swgScope->getTracesData()->back()->setTraceDelayCoarse(traceIt->m_traceDelayCoarse);
        swgScope->getTracesData()->back()->setTraceDelayFine(traceIt->m_traceDelayFine);
        swgScope->getTracesData()->back()->setTriggerDisplayLevel(traceIt->m_triggerDisplayLevel);
        swgScope->getTracesData()->back()->setViewTrace(traceIt->m_viewTrace ? 1 : 0);
    }

    // array of triggers
    swgScope->setTriggersData(new QList<SWGSDRangel::SWGTriggerData *>);
    std::vector<GLScopeSettings::TriggerData>::const_iterator triggerIt = m_triggersData.begin();

    for (; triggerIt != m_triggersData.end(); ++triggerIt)
    {
        swgScope->getTriggersData()->append(new SWGSDRangel::SWGTriggerData);
        swgScope->getTriggersData()->back()->setStreamIndex(triggerIt->m_streamIndex);
        swgScope->getTriggersData()->back()->setInputIndex(triggerIt->m_inputIndex);
        swgScope->getTriggersData()->back()->setProjectionType((int) triggerIt->m_projectionType);
        swgScope->getTriggersData()->back()->setTriggerBothEdges(triggerIt->m_triggerBothEdges ? 1 : 0);
        swgScope->getTriggersData()->back()->setTriggerColor(qColorToInt(triggerIt->m_triggerColor));
        swgScope->getTriggersData()->back()->setTriggerColorB(triggerIt->m_triggerColorB);
        swgScope->getTriggersData()->back()->setTriggerColorG(triggerIt->m_triggerColorG);
        swgScope->getTriggersData()->back()->setTriggerColorR(triggerIt->m_triggerColorR);
        swgScope->getTriggersData()->back()->setTriggerDelay(triggerIt->m_triggerDelay);
        swgScope->getTriggersData()->back()->setTriggerDelayCoarse(triggerIt->m_triggerDelayCoarse);
        swgScope->getTriggersData()->back()->setTriggerDelayFine(triggerIt->m_triggerDelayFine);
        swgScope->getTriggersData()->back()->setTriggerDelayMult(triggerIt->m_triggerDelayMult);
        swgScope->getTriggersData()->back()->setTriggerHoldoff(triggerIt->m_triggerHoldoff ? 1 : 0);
        swgScope->getTriggersData()->back()->setTriggerLevel(triggerIt->m_triggerLevel);
        swgScope->getTriggersData()->back()->setTriggerLevelCoarse(triggerIt->m_triggerLevelCoarse);
        swgScope->getTriggersData()->back()->setTriggerLevelFine(triggerIt->m_triggerLevelFine);
        swgScope->getTriggersData()->back()->setTriggerPositiveEdge(triggerIt->m_triggerPositiveEdge ? 1 : 0);
        swgScope->getTriggersData()->back()->setTriggerRepeat(triggerIt->m_triggerRepeat);
    }
}

void GLScopeSettings::updateFrom(const QStringList& keys, const SWGSDRangel::SWGObject *swgObject)
{
    SWGSDRangel::SWGGLScope *swgScope =
        static_cast<SWGSDRangel::SWGGLScope *>(const_cast<SWGSDRangel::SWGObject *>(swgObject));

    if (keys.contains("scopeConfig.displayMode")) {
        m_displayMode = (GLScopeSettings::DisplayMode) swgScope->getDisplayMode();
    }
    if (keys.contains("scopeConfig.gridIntensity")) {
        m_gridIntensity = swgScope->getGridIntensity();
    }
    if (keys.contains("scopeConfig.time")) {
        m_time = swgScope->getTime();
    }
    if (keys.contains("scopeConfig.timeOfs")) {
        m_timeOfs = swgScope->getTimeOfs();
    }
    if (keys.contains("scopeConfig.traceIntensity")) {
        m_traceIntensity = swgScope->getTraceIntensity();
    }
    if (keys.contains("scopeConfig.traceLenMult")) {
        m_traceLenMult = swgScope->getTraceLenMult();
    }
    if (keys.contains("scopeConfig.trigPre")) {
        m_trigPre = swgScope->getTrigPre();
    }
    // traces
    if (keys.contains("scopeConfig.tracesData"))
    {
        QList<SWGSDRangel::SWGTraceData *> *tracesData = swgScope->getTracesData();
        m_tracesData.clear();

        for (int i = 0; i < 10; i++) // no more than 10 traces anyway
        {
            if (keys.contains(QString("scopeConfig.tracesData[%1]").arg(i)))
            {
                SWGSDRangel::SWGTraceData *traceData = tracesData->at(i);
                m_tracesData.push_back(GLScopeSettings::TraceData());

                if (keys.contains(QString("scopeConfig.tracesData[%1].streamIndex").arg(i))) {
                    m_tracesData.back().m_streamIndex = traceData->getStreamIndex();
                }
                if (keys.contains(QString("scopeConfig.tracesData[%1].amp").arg(i))) {
                    m_tracesData.back().m_amp = traceData->getAmp();
                }
                if (keys.contains(QString("scopeConfig.tracesData[%1].hasTextOverlay").arg(i))) {
                    m_tracesData.back().m_hasTextOverlay = traceData->getHasTextOverlay() != 0;
                }
                if (keys.contains(QString("scopeConfig.tracesData[%1].inputIndex").arg(i))) {
                    m_tracesData.back().m_streamIndex = traceData->getStreamIndex();
                }
                if (keys.contains(QString("scopeConfig.tracesData[%1].ofs").arg(i))) {
                    m_tracesData.back().m_ofs = traceData->getOfs();
                }
                if (keys.contains(QString("scopeConfig.tracesData[%1].projectionType").arg(i))) {
                    m_tracesData.back().m_projectionType = (Projector::ProjectionType) traceData->getProjectionType();
                }
                if (keys.contains(QString("scopeConfig.tracesData[%1].traceColor").arg(i))) {
                    m_tracesData.back().m_traceColor = intToQColor(traceData->getTraceColor());
                }
                if (keys.contains(QString("scopeConfig.tracesData[%1].traceColorB").arg(i))) {
                    m_tracesData.back().m_traceColorB = traceData->getTraceColorB();
                }
                if (keys.contains(QString("scopeConfig.tracesData[%1].traceColorG").arg(i))) {
                    m_tracesData.back().m_traceColorG = traceData->getTraceColorG();
                }
                if (keys.contains(QString("scopeConfig.tracesData[%1].traceColorR").arg(i))) {
                    m_tracesData.back().m_traceColorR = traceData->getTraceColorR();
                }
                if (keys.contains(QString("scopeConfig.tracesData[%1].traceDelay").arg(i))) {
                    m_tracesData.back().m_traceDelay = traceData->getTraceDelay();
                }
                if (keys.contains(QString("scopeConfig.tracesData[%1].traceDelayCoarse").arg(i))) {
                    m_tracesData.back().m_traceDelayCoarse = traceData->getTraceDelayCoarse();
                }
                if (keys.contains(QString("scopeConfig.tracesData[%1].traceDelayFine").arg(i))) {
                    m_tracesData.back().m_traceDelayFine = traceData->getTraceDelayFine();
                }
                if (keys.contains(QString("scopeConfig.tracesData[%1].triggerDisplayLevel").arg(i))) {
                    m_tracesData.back().m_triggerDisplayLevel = traceData->getTriggerDisplayLevel();
                }
                if (keys.contains(QString("scopeConfig.tracesData[%1].viewTrace").arg(i))) {
                    m_tracesData.back().m_viewTrace = traceData->getViewTrace() != 0;
                }
            }
            else
            {
                break;
            }
        }
    }
    // triggers
    if (keys.contains("scopeConfig.triggersData"))
    {
        QList<SWGSDRangel::SWGTriggerData *> *triggersData = swgScope->getTriggersData();
        m_triggersData.clear();

        for (int i = 0; i < 10; i++) // no more than 10 triggers anyway
        {
            if (keys.contains(QString("scopeConfig.triggersData[%1]").arg(i)))
            {
                SWGSDRangel::SWGTriggerData *triggerData = triggersData->at(i);
                m_triggersData.push_back(GLScopeSettings::TriggerData());

                if (keys.contains(QString("scopeConfig.triggersData[%1].streamIndex").arg(i))) {
                    m_triggersData.back().m_streamIndex = triggerData->getStreamIndex();
                }
                if (keys.contains(QString("scopeConfig.triggersData[%1].inputIndex").arg(i))) {
                    m_triggersData.back().m_inputIndex = triggerData->getInputIndex();
                }
                if (keys.contains(QString("scopeConfig.triggersData[%1].projectionType").arg(i))) {
                    m_triggersData.back().m_projectionType = (Projector::ProjectionType) triggerData->getProjectionType();
                }
                if (keys.contains(QString("scopeConfig.triggersData[%1].triggerBothEdges").arg(i))) {
                    m_triggersData.back().m_triggerBothEdges = triggerData->getTriggerBothEdges() != 0;
                }
                if (keys.contains(QString("scopeConfig.tracesData[%1].triggerColor").arg(i))) {
                    m_tracesData.back().m_traceColor = intToQColor(triggerData->getTriggerColor());
                }
                if (keys.contains(QString("scopeConfig.triggersData[%1].triggerColorB").arg(i))) {
                    m_triggersData.back().m_triggerColorB = triggerData->getTriggerColorB();
                }
                if (keys.contains(QString("scopeConfig.triggersData[%1].triggerColorG").arg(i))) {
                    m_triggersData.back().m_triggerColorG = triggerData->getTriggerColorG();
                }
                if (keys.contains(QString("scopeConfig.triggersData[%1].triggerColorR").arg(i))) {
                    m_triggersData.back().m_triggerColorR = triggerData->getTriggerColorR();
                }
                if (keys.contains(QString("scopeConfig.triggersData[%1].triggerDelay").arg(i))) {
                    m_triggersData.back().m_triggerDelay = triggerData->getTriggerDelay();
                }
                if (keys.contains(QString("scopeConfig.triggersData[%1].triggerDelayCoarse").arg(i))) {
                    m_triggersData.back().m_triggerDelayCoarse = triggerData->getTriggerDelayCoarse();
                }
                if (keys.contains(QString("scopeConfig.triggersData[%1].triggerDelayFine").arg(i))) {
                    m_triggersData.back().m_triggerDelayFine = triggerData->getTriggerDelayFine();
                }
                if (keys.contains(QString("scopeConfig.triggersData[%1].triggerDelayMult").arg(i))) {
                    m_triggersData.back().m_triggerDelayMult = triggerData->getTriggerDelayMult();
                }
                if (keys.contains(QString("scopeConfig.triggersData[%1].triggerHoldoff").arg(i))) {
                    m_triggersData.back().m_triggerHoldoff = triggerData->getTriggerHoldoff();
                }
                if (keys.contains(QString("scopeConfig.triggersData[%1].triggerLevel").arg(i))) {
                    m_triggersData.back().m_triggerLevel = triggerData->getTriggerLevel();
                }
                if (keys.contains(QString("scopeConfig.triggersData[%1].triggerLevelCoarse").arg(i))) {
                    m_triggersData.back().m_triggerLevelCoarse = triggerData->getTriggerLevelCoarse();
                }
                if (keys.contains(QString("scopeConfig.triggersData[%1].triggerLevelFine").arg(i))) {
                    m_triggersData.back().m_triggerLevelFine = triggerData->getTriggerLevelFine();
                }
                if (keys.contains(QString("scopeConfig.triggersData[%1].triggerPositiveEdge").arg(i))) {
                    m_triggersData.back().m_triggerPositiveEdge = triggerData->getTriggerPositiveEdge() != 0;
                }
                if (keys.contains(QString("scopeConfig.triggersData[%1].triggerRepeat").arg(i))) {
                    m_triggersData.back().m_triggerRepeat = triggerData->getTriggerRepeat() != 0;
                }
            }
        }
    }
}

GLScopeSettings& GLScopeSettings::operator=(const GLScopeSettings& t)
{
    // Check for self assignment
    if (this != &t)
    {
        m_tracesData = t.m_tracesData;
        m_triggersData = t.m_triggersData;
        m_displayMode = t.m_displayMode;
        m_traceIntensity = t.m_traceIntensity;
        m_gridIntensity = t.m_gridIntensity;
        m_time = t.m_time;
        m_timeOfs = t.m_timeOfs;
        m_traceLenMult = t.m_traceLenMult;
        m_trigPre = t.m_trigPre;
    }

    return *this;
}

int GLScopeSettings::qColorToInt(const QColor& color)
{
    return 256*256*color.blue() + 256*color.green() + color.red();
}

QColor GLScopeSettings::intToQColor(int intColor)
{
    int r = intColor % 256;
    int bg = intColor / 256;
    int g = bg % 256;
    int b = bg / 256;
    return QColor(r, g, b);
}