Esempio n. 1
0
void CPlotter::SetDemodRanges(int FLowCmin, int FLowCmax, int FHiCmin, int FHiCmax, bool symetric)
{
    m_FLowCmin=FLowCmin;
    m_FLowCmax=FLowCmax;
    m_FHiCmin=FHiCmin;
    m_FHiCmax=FHiCmax;
    m_symetric=symetric;
    ClampDemodParameters();
    DrawOverlay();
}
Esempio n. 2
0
//////////////////////////////////////////////////////////////////////
// Called when a mouse wheel is turned
//////////////////////////////////////////////////////////////////////
void CPlotter::wheelEvent(QWheelEvent * event)
{
    QPoint pt = event->pos();
    int numDegrees = event->delta() / 8;
    int numSteps = numDegrees / 15;  /** FIXME: Only used for direction **/

    /** FIXME: zooming could use some optimisation **/
    if (m_CursorCaptured == YAXIS)
    {
        // Vertical zoom. Wheel down: zoom out, wheel up: zoom in
        // During zoom we try to keep the point (dB or kHz) under the cursor fixed
        float zoom_fac = event->delta() < 0 ? 1.1 : 0.9;
        float ratio = (float)pt.y() / (float)m_OverlayPixmap.height();
        float db_range = (float)(m_MaxdB - m_MindB);
        float y_range = (float)m_OverlayPixmap.height();
        float db_per_pix = db_range / y_range;
        float fixed_db = m_MaxdB - pt.y() * db_per_pix;

        db_range *= zoom_fac;

        m_MaxdB = fixed_db + ratio*db_range;
        m_MindB = m_MaxdB - db_range;
    }
    else if (m_CursorCaptured == XAXIS)
    {
        // calculate new range shown on FFT
        float zoom_factor = event->delta() < 0 ? 1.1 : 0.9;
        float new_range = (float)(m_Span) * zoom_factor;

        // Frequency where event occured is kept fixed under mouse
        float ratio = (float)pt.x() / (float)m_OverlayPixmap.width();

        float fixed_hz = FreqfromX(pt.x());

        float f_max = fixed_hz + (1.0 - ratio) * new_range;
        float f_min = f_max - new_range;
        qint64 fc = (qint64)(f_min + (f_max - f_min) / 2.0);

        SetFftCenterFreq(fc-m_CenterFreq);
        SetSpanFreq((quint32)new_range);

        zoom_factor = (float)m_SampleFreq/(float)m_Span;
        qDebug() << QString("Spectrum zoom: %1x").arg(zoom_factor, 0, 'f', 1);
    }
    else if (event->modifiers() & Qt::ControlModifier)
    {
        // filter width
        m_DemodLowCutFreq -= numSteps*m_ClickResolution;
        m_DemodHiCutFreq += numSteps*m_ClickResolution;
        ClampDemodParameters();
        emit NewFilterFreq(m_DemodLowCutFreq, m_DemodHiCutFreq);
    }

    else if (event->modifiers() & Qt::ShiftModifier)
    {
        // filter shift
        m_DemodLowCutFreq += numSteps*m_ClickResolution;
        m_DemodHiCutFreq += numSteps*m_ClickResolution;
        ClampDemodParameters();
        emit NewFilterFreq(m_DemodLowCutFreq, m_DemodHiCutFreq);
    }
    else
    {
        // inc/dec demod frequency
        m_DemodCenterFreq += (numSteps*m_ClickResolution);
        m_DemodCenterFreq = RoundFreq(m_DemodCenterFreq, m_ClickResolution );
        emit NewDemodFreq(m_DemodCenterFreq, m_DemodCenterFreq-m_CenterFreq);
    }

    if (m_Running)
        m_DrawOverlay = true;
    else
        DrawOverlay();
}
Esempio n. 3
0
//////////////////////////////////////////////////////////////////////
// Called when mouse moves and does different things depending
//on the state of the mouse buttons for dragging the demod bar or
// filter edges.
//////////////////////////////////////////////////////////////////////
void CPlotter::mouseMoveEvent(QMouseEvent* event)
{

    QPoint pt = event->pos();

    /* mouse enter / mouse leave events */
    if (m_OverlayPixmap.rect().contains(pt))
    {	//is in Overlay bitmap region
        if (event->buttons() == Qt::NoButton)
        {	//if no mouse button monitor grab regions and change cursor icon
            if (IsPointCloseTo(pt.x(), m_DemodFreqX, m_CursorCaptureDelta))
            {	//in move demod box center frequency region
                if (CENTER != m_CursorCaptured)
                    setCursor(QCursor(Qt::CrossCursor));
                m_CursorCaptured = CENTER;
            }
            else if (IsPointCloseTo(pt.x(), m_DemodHiCutFreqX, m_CursorCaptureDelta))
            {	//in move demod hicut region
                if (RIGHT != m_CursorCaptured)
                    setCursor(QCursor(Qt::SizeHorCursor));
                m_CursorCaptured = RIGHT;
            }
            else if (IsPointCloseTo(pt.x(), m_DemodLowCutFreqX, m_CursorCaptureDelta))
            {	//in move demod lowcut region
                if (LEFT != m_CursorCaptured)
                    setCursor(QCursor(Qt::SizeHorCursor));
                m_CursorCaptured = LEFT;
            }
            else if (IsPointCloseTo(pt.x(), m_YAxisWidth/2, m_YAxisWidth/2))
            {
                if (YAXIS != m_CursorCaptured)
                    setCursor(QCursor(Qt::OpenHandCursor));
                m_CursorCaptured = YAXIS;
            }
            else if (IsPointCloseTo(pt.y(), m_XAxisYCenter, m_CursorCaptureDelta+5))
            {
                if (XAXIS != m_CursorCaptured)
                    setCursor(QCursor(Qt::OpenHandCursor));
                m_CursorCaptured = XAXIS;
            }
            else
            {	//if not near any grab boundaries
                if (NONE != m_CursorCaptured)
                {
                    setCursor(QCursor(Qt::ArrowCursor));
                    m_CursorCaptured = NONE;
                }
            }
            m_GrabPosition = 0;
        }
    }
    else
    {	//not in Overlay region
        if (event->buttons() == Qt::NoButton)
        {
            if (NONE != m_CursorCaptured)
                setCursor(QCursor(Qt::ArrowCursor));

            m_CursorCaptured = NONE;
            m_GrabPosition = 0;
        }
    }

    // process mouse moves while in cursor capture modes
    if (YAXIS == m_CursorCaptured)
    {
        if (event->buttons() & Qt::LeftButton)
        {
            setCursor(QCursor(Qt::ClosedHandCursor));
            // move Y scale up/down
            int delta_px = m_Yzero - pt.y();
            int delta_db = delta_px * abs(m_MindB-m_MaxdB)/m_OverlayPixmap.height();
            m_MindB -= delta_db;
            m_MaxdB -= delta_db;

            if (m_Running)
                m_DrawOverlay = true;
            else
                DrawOverlay();

            m_Yzero = pt.y();
        }
    }
    else if (XAXIS == m_CursorCaptured)
    {
        if (event->buttons() & (Qt::LeftButton | Qt::MiddleButton))
        {
            setCursor(QCursor(Qt::ClosedHandCursor));
            // pan viewable range or move center frequency
            int delta_px = m_Xzero - pt.x();
            qint64 delta_hz = delta_px * m_Span / m_OverlayPixmap.width();
            if (event->buttons() & Qt::MiddleButton)
            {
                m_CenterFreq += delta_hz;
                m_DemodCenterFreq += delta_hz;
                emit NewCenterFreq(m_CenterFreq);
            }
            else
            {
                m_FftCenter += delta_hz;
            }
            if (m_Running)
                m_DrawOverlay = true;
            else
                DrawOverlay();

            m_Xzero = pt.x();
        }
    }
    else if (LEFT == m_CursorCaptured)
    {   // moving in demod lowcut region
        if (event->buttons() & (Qt::LeftButton|Qt::RightButton))
        {   //moving in demod lowcut region with left button held
            if (m_GrabPosition != 0)
            {
                m_DemodLowCutFreq = FreqfromX(pt.x()-m_GrabPosition ) - m_DemodCenterFreq;
                m_DemodLowCutFreq = RoundFreq(m_DemodLowCutFreq, m_FilterClickResolution);

                if (m_symetric && (event->buttons() & Qt::LeftButton))  // symetric adjustment
                {
                    m_DemodHiCutFreq = -m_DemodLowCutFreq;
                }
                ClampDemodParameters();

                emit NewFilterFreq(m_DemodLowCutFreq, m_DemodHiCutFreq);
                if (m_Running)
                    m_DrawOverlay = true;  // schedule update of overlay during draw()
                else
                    DrawOverlay();  // not running so update oiverlay now
            }
            else
            {	//save initial grab postion from m_DemodFreqX
                m_GrabPosition = pt.x()-m_DemodLowCutFreqX;
            }
        }
        else if (event->buttons() & ~Qt::NoButton)
        {
            setCursor(QCursor(Qt::ArrowCursor));
            m_CursorCaptured = NONE;
        }
    }
    else if (RIGHT == m_CursorCaptured)
    {   // moving in demod highcut region
        if (event->buttons() & (Qt::LeftButton|Qt::RightButton))
        {   // moving in demod highcut region with right button held
            if (m_GrabPosition != 0)
            {
                m_DemodHiCutFreq = FreqfromX( pt.x()-m_GrabPosition ) - m_DemodCenterFreq;
                m_DemodHiCutFreq = RoundFreq(m_DemodHiCutFreq, m_FilterClickResolution);

                if (m_symetric && (event->buttons() & Qt::LeftButton)) // symetric adjustment
                {
                    m_DemodLowCutFreq = -m_DemodHiCutFreq;
                }
                ClampDemodParameters();

                emit NewFilterFreq(m_DemodLowCutFreq, m_DemodHiCutFreq);
                if (m_Running)
                    m_DrawOverlay = true;  // schedule update of overlay during draw()
                else
                    DrawOverlay();  // not running so update oiverlay now
            }
            else
            {	//save initial grab postion from m_DemodFreqX
                m_GrabPosition = pt.x()-m_DemodHiCutFreqX;
            }
        }
        else if (event->buttons() & ~Qt::NoButton)
        {
            setCursor(QCursor(Qt::ArrowCursor));
            m_CursorCaptured = NONE;
        }
    }
    else if (CENTER == m_CursorCaptured)
    {   // moving inbetween demod lowcut and highcut region
        if (event->buttons() & Qt::LeftButton)
        {   // moving inbetween demod lowcut and highcut region with left button held
            if (m_GrabPosition != 0)
            {
                m_DemodCenterFreq = RoundFreq(FreqfromX(pt.x()-m_GrabPosition), m_ClickResolution );
                emit NewDemodFreq(m_DemodCenterFreq, m_DemodCenterFreq-m_CenterFreq);

                if (m_Running)
                    m_DrawOverlay = true;  // schedule update of overlay during draw()
                else
                    DrawOverlay();  // not running so update oiverlay now
            }
            else
            {	//save initial grab postion from m_DemodFreqX
                m_GrabPosition = pt.x()-m_DemodFreqX;
            }
        }
        else if (event->buttons() & ~Qt::NoButton)
        {
            setCursor(QCursor(Qt::ArrowCursor));
            m_CursorCaptured = NONE;
        }
    }
    else	//if cursor not captured
    {
        m_GrabPosition = 0;
    }
    if (!this->rect().contains(pt))
    {
        if(NONE != m_CursorCaptured)
            setCursor(QCursor(Qt::ArrowCursor));
        m_CursorCaptured = NONE;
    }
}
Esempio n. 4
0
//////////////////////////////////////////////////////////////////////
// Called to draw an overlay bitmap containing grid and text that
// does not need to be recreated every fft data update.
//////////////////////////////////////////////////////////////////////
void CPlotter::DrawOverlay()
{
    if (m_OverlayPixmap.isNull())
        return;

    int w = m_OverlayPixmap.width();
    int h = m_OverlayPixmap.height();
    int x,y;
    float pixperdiv;
    QRect rect;
    QPainter painter(&m_OverlayPixmap);
    painter.initFrom(this);

    //m_OverlayPixmap.fill(Qt::black);
    //fill background with gradient
    QLinearGradient gradient(0, 0, 0 ,h);
    gradient.setColorAt(0, QColor(0x20,0x20,0x20,0xFF));
    gradient.setColorAt(1, QColor(0x4F,0x4F,0x4F,0xFF));
    painter.setBrush(gradient);
    painter.drawRect(0, 0, w, h);

    //Draw demod filter box
    ClampDemodParameters();
    m_DemodFreqX = XfromFreq(m_DemodCenterFreq);
    m_DemodLowCutFreqX = XfromFreq(m_DemodCenterFreq + m_DemodLowCutFreq);
    m_DemodHiCutFreqX = XfromFreq(m_DemodCenterFreq + m_DemodHiCutFreq);

    int dw = m_DemodHiCutFreqX - m_DemodLowCutFreqX;

    painter.setBrush(Qt::SolidPattern);
    painter.setOpacity(0.3);
    painter.fillRect(m_DemodLowCutFreqX, 0, dw, h, Qt::gray);

    painter.setOpacity(1.0);
    // edge of filter -> we don't need different color
    //painter.setPen(QPen(Qt::gray, 1, Qt::SolidLine));
    //painter.drawLine(m_DemodLowCutFreqX, 0, m_DemodLowCutFreqX, h);
    //painter.drawLine(m_DemodHiCutFreqX, 0, m_DemodHiCutFreqX, h);

    painter.setPen(QPen(QColor(0xFF,0x71,0x71,0xFF), 1, Qt::SolidLine));
    painter.drawLine(m_DemodFreqX, 0, m_DemodFreqX, h);


    //create Font to use for scales
    QFont Font("Arial");
    Font.setPointSize(9);
    QFontMetrics metrics(Font);

    y = h/VERT_DIVS;
    //if (y < metrics.height())
    //    Font.setPixelSize(y);
    Font.setWeight(QFont::Normal);
    painter.setFont(Font);

    //draw vertical grids
    pixperdiv = (float)w / (float)HORZ_DIVS;
    y = h - h/VERT_DIVS/2;
    for (int i = 1; i < HORZ_DIVS; i++)
    {
        x = (int)((float)i*pixperdiv);
        if (i == HORZ_DIVS/2)
            // center line
            painter.setPen(QPen(QColor(0x78,0x82,0x96,0xFF), 1, Qt::SolidLine));
        else
            painter.setPen(QPen(QColor(0xF0,0xF0,0xF0,0x30), 1, Qt::DotLine));

        painter.drawLine(x, 0, x , y);
        //painter.drawLine(x, h-5, x , h);
    }

    //draw frequency values
    MakeFrequencyStrs();
    painter.setPen(QColor(0xD8,0xBA,0xA1,0xFF));
    y = h - (h/VERT_DIVS);
    for (int i = 1; i < HORZ_DIVS; i++)
    {
        //if ((i==0) || (i==HORZ_DIVS))
        //{	//left justify the leftmost text
        //x = (int)( (float)i*pixperdiv);
        //rect.setRect(x ,y, (int)pixperdiv, h/VERT_DIVS);
        //painter.drawText(rect, Qt::AlignLeft|Qt::AlignVCenter, m_HDivText[i]);
        //}
        //else if(HORZ_DIVS == i)
        //{	//right justify the rightmost text
        //	x = (int)( (float)i*pixperdiv - pixperdiv);
        //	rect.setRect(x ,y, (int)pixperdiv, h/VERT_DIVS);
        //	painter.drawText(rect, Qt::AlignRight|Qt::AlignVCenter, m_HDivText[i]);
        //}
        //else
        //{	//center justify the rest of the text
        x = (int)((float)i*pixperdiv - pixperdiv/2);
        rect.setRect(x, y, (int)pixperdiv, h/VERT_DIVS);
        painter.drawText(rect, Qt::AlignHCenter|Qt::AlignBottom, m_HDivText[i]);
        //}
    }

    //draw horizontal grids
    pixperdiv = (float)h / (float)VERT_DIVS;
    painter.setPen(QPen(QColor(0xF0,0xF0,0xF0,0x30), 1,Qt::DotLine));
    for (int i = 1; i < VERT_DIVS; i++)
    {
        y = (int)((float) i*pixperdiv);
        painter.drawLine(5*metrics.width("0",-1), y, w, y);
    }

    //draw amplitude values
    painter.setPen(QColor(0xD8,0xBA,0xA1,0xFF));
    //Font.setWeight(QFont::Light);
    painter.setFont(Font);
    int dB = m_MaxdB;
    for (int i = 1; i < VERT_DIVS; i++)
    {
        dB -= m_dBStepSize;  /* move to end if want to include maxdb */
        y = (int)((float)i*pixperdiv);
        rect.setRect(0, y-metrics.height()/2, metrics.width("-120 "), metrics.height());
        painter.drawText(rect, Qt::AlignRight|Qt::AlignVCenter, QString::number(dB));
    }

    m_MindB = m_MaxdB - (VERT_DIVS)*m_dBStepSize;

    if (!m_Running)
    {	//if not running so is no data updates to draw to screen
        //copy into 2Dbitmap the overlay bitmap.
        m_2DPixmap = m_OverlayPixmap.copy(0,0,w,h);
        //trigger a new paintEvent
        update();
    }
}
Esempio n. 5
0
//////////////////////////////////////////////////////////////////////
// Called to draw an overlay bitmap containing grid and text that
// does not need to be recreated every fft data update.
//////////////////////////////////////////////////////////////////////
void CPlotter::DrawOverlay()
{
    if (m_OverlayPixmap.isNull())
        return;

    int w = m_OverlayPixmap.width();
    int h = m_OverlayPixmap.height();
    int x,y;
    float pixperdiv;
    QRect rect;
    QPainter painter(&m_OverlayPixmap);
    painter.initFrom(this);

    // horizontal grids (size and grid calcs could be moved to resize)
    m_VerDivs = h/m_VdivDelta+1;
    m_HorDivs = w/m_HdivDelta;
    if (m_HorDivs % 2)
        m_HorDivs++;   // we want an odd number of divs so that we have a center line

    //m_OverlayPixmap.fill(Qt::black);
    //fill background with gradient
    QLinearGradient gradient(0, 0, 0 ,h);
    gradient.setColorAt(0, QColor(0x20,0x20,0x20,0xFF));
    gradient.setColorAt(1, QColor(0x4F,0x4F,0x4F,0xFF));
    painter.setBrush(gradient);
    painter.drawRect(0, 0, w, h);

    //Draw demod filter box
    if (m_FilterBoxEnabled)
    {
        ClampDemodParameters();
        m_DemodFreqX = XfromFreq(m_DemodCenterFreq);
        m_DemodLowCutFreqX = XfromFreq(m_DemodCenterFreq + m_DemodLowCutFreq);
        m_DemodHiCutFreqX = XfromFreq(m_DemodCenterFreq + m_DemodHiCutFreq);

        int dw = m_DemodHiCutFreqX - m_DemodLowCutFreqX;

        painter.setBrush(Qt::SolidPattern);
        painter.setOpacity(0.3);
        painter.fillRect(m_DemodLowCutFreqX, 0, dw, h, Qt::gray);

        painter.setOpacity(1.0);
        painter.setPen(QPen(QColor(0xFF,0x71,0x71,0xFF), 1, Qt::SolidLine));
        painter.drawLine(m_DemodFreqX, 0, m_DemodFreqX, h);
    }

    //create Font to use for scales
    QFont Font("Arial");
    Font.setPointSize(m_FontSize);
    QFontMetrics metrics(Font);

    Font.setWeight(QFont::Normal);
    painter.setFont(Font);

    // draw vertical grids
    pixperdiv = (float)w / (float)m_HorDivs;
    y = h - h/m_VerDivs/2;
    for (int i = 1; i < m_HorDivs; i++)
    {
        x = (int)((float)i*pixperdiv);
        if ((i == m_HorDivs/2) && m_CenterLineEnabled)
            // center line
            painter.setPen(QPen(QColor(0x78,0x82,0x96,0xFF), 1, Qt::SolidLine));
        else
            painter.setPen(QPen(QColor(0xF0,0xF0,0xF0,0x30), 1, Qt::DotLine));

        painter.drawLine(x, 0, x , y);
    }

    //draw frequency values
    MakeFrequencyStrs();
    painter.setPen(QColor(0xD8,0xBA,0xA1,0xFF));
    y = h - (h/m_VerDivs);
    for (int i = 1; i < m_HorDivs; i++)
    {
        x = (int)((float)i*pixperdiv - pixperdiv/2);
        rect.setRect(x, y, (int)pixperdiv, h/m_VerDivs);
        painter.drawText(rect, Qt::AlignHCenter|Qt::AlignBottom, m_HDivText[i]);
    }

    m_dBStepSize = abs(m_MaxdB-m_MindB)/(double)m_VerDivs;
    pixperdiv = (float)h / (float)m_VerDivs;
    painter.setPen(QPen(QColor(0xF0,0xF0,0xF0,0x30), 1,Qt::DotLine));
    for (int i = 1; i < m_VerDivs; i++)
    {
        y = (int)((float) i*pixperdiv);
        painter.drawLine(5*metrics.width("0",-1), y, w, y);
    }

    //draw amplitude values
    painter.setPen(QColor(0xD8,0xBA,0xA1,0xFF));
    //Font.setWeight(QFont::Light);
    painter.setFont(Font);
    int dB = m_MaxdB;
    m_YAxisWidth = metrics.width("-120 ");
    for (int i = 1; i < m_VerDivs; i++)
    {
        dB -= m_dBStepSize;  /* move to end if want to include maxdb */
        y = (int)((float)i*pixperdiv);
        rect.setRect(0, y-metrics.height()/2, m_YAxisWidth, metrics.height());
        painter.drawText(rect, Qt::AlignRight|Qt::AlignVCenter, QString::number(dB));
    }

    if (!m_Running)
    {	//if not running so is no data updates to draw to screen
        //copy into 2Dbitmap the overlay bitmap.
        m_2DPixmap = m_OverlayPixmap.copy(0,0,w,h);
        //trigger a new paintEvent
        update();
    }
}