//////////////////////////////////////////////////////////////////////
// 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 = qBound(1.0f, db_range * zoom_fac, 2000.0f);
m_MaxdB = fixed_db + ratio*db_range;
m_MindB = m_MaxdB - db_range;
m_PeakHoldValid = false;
}
else if (m_CursorCaptured == XAXIS)
{
zoomStepX(event->delta() < 0 ? 1.1 : 0.9, pt.x());
}
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();
}
//////////////////////////////////////////////////////////////////////
// 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 = qBound(1.0f, db_range * zoom_fac, 2000.0f);
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 = qBound(10.0f,
(float)(m_Span) * zoom_factor,
(float)(m_SampleFreq) * 10.0f);
// 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();
}
//////////////////////////////////////////////////////////////////////
// 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::SizeHorCursor));
m_CursorCaptured = CENTER;
}
else if (isPointCloseTo(pt.x(), m_DemodHiCutFreqX, m_CursorCaptureDelta))
{ //in move demod hicut region
if (RIGHT != m_CursorCaptured)
setCursor(QCursor(Qt::SizeFDiagCursor));
m_CursorCaptured = RIGHT;
}
else if (isPointCloseTo(pt.x(), m_DemodLowCutFreqX, m_CursorCaptureDelta))
{ //in move demod lowcut region
if (LEFT != m_CursorCaptured)
setCursor(QCursor(Qt::SizeBDiagCursor));
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
double delta_px = m_Yzero - pt.y();
double delta_db = delta_px * abs(m_MindB-m_MaxdB)/(double)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::MidButton))
{
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::MidButton)
{
m_CenterFreq += delta_hz;
m_DemodCenterFreq += delta_hz;
emit newCenterFreq(m_CenterFreq);
}
else
{
setFftCenterFreq(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;
}
}
//////////////////////////////////////////////////////////////////////
// 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)
{
bool onTag=false;
if(pt.y()<15*3) //FIXME
{
for(int i=0; i<m_BookmarkTags.size() && !onTag; i++)
{
if(m_BookmarkTags[i].first.contains(event->pos()))
onTag=true;
}
}
//if no mouse button monitor grab regions and change cursor icon
if(onTag)
{
setCursor(QCursor(Qt::PointingHandCursor));
m_CursorCaptured=BOOKMARK;
}
else if (isPointCloseTo(pt.x(), m_DemodFreqX, m_CursorCaptureDelta))
{ //in move demod box center frequency region
if (CENTER != m_CursorCaptured)
setCursor(QCursor(Qt::SizeHorCursor));
m_CursorCaptured = CENTER;
if (m_TooltipsEnabled)
QToolTip::showText(event->globalPos(),
QString("Demod: %1 kHz")
.arg(m_DemodCenterFreq/1.e3f, 0, 'f', 3),
this, rect());
}
else if (isPointCloseTo(pt.x(), m_DemodHiCutFreqX, m_CursorCaptureDelta))
{ //in move demod hicut region
if (RIGHT != m_CursorCaptured)
setCursor(QCursor(Qt::SizeFDiagCursor));
m_CursorCaptured = RIGHT;
if (m_TooltipsEnabled)
QToolTip::showText(event->globalPos(),
QString("High cut: %1 Hz")
.arg(m_DemodHiCutFreq),
this, rect());
}
else if (isPointCloseTo(pt.x(), m_DemodLowCutFreqX, m_CursorCaptureDelta))
{ //in move demod lowcut region
if (LEFT != m_CursorCaptured)
setCursor(QCursor(Qt::SizeBDiagCursor));
m_CursorCaptured = LEFT;
if (m_TooltipsEnabled)
QToolTip::showText(event->globalPos(),
QString("Low cut: %1 Hz")
.arg(m_DemodLowCutFreq),
this, rect());
}
else if (isPointCloseTo(pt.x(), m_YAxisWidth/2, m_YAxisWidth/2))
{
if (YAXIS != m_CursorCaptured)
setCursor(QCursor(Qt::OpenHandCursor));
m_CursorCaptured = YAXIS;
if (m_TooltipsEnabled)
QToolTip::hideText();
}
else if (isPointCloseTo(pt.y(), m_XAxisYCenter, m_CursorCaptureDelta+5))
{
if (XAXIS != m_CursorCaptured)
setCursor(QCursor(Qt::OpenHandCursor));
m_CursorCaptured = XAXIS;
if (m_TooltipsEnabled)
QToolTip::hideText();
}
else
{ //if not near any grab boundaries
if (NONE != m_CursorCaptured)
{
setCursor(QCursor(Qt::ArrowCursor));
m_CursorCaptured = NONE;
}
if (m_TooltipsEnabled)
QToolTip::showText(event->globalPos(),
QString("F: %1 kHz")
.arg(freqFromX(pt.x())/1.e3f, 0, 'f', 3),
this, rect());
}
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;
}
if (m_TooltipsEnabled)
QToolTip::showText(event->globalPos(),
QString("F: %1 kHz")
.arg(freqFromX(pt.x())/1.e3f, 0, 'f', 3),
this, rect());
}
// 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
float delta_px = m_Yzero - pt.y();
float delta_db = delta_px * fabs(m_MindB-m_MaxdB)/(float)m_OverlayPixmap.height();
m_MindB -= delta_db;
m_MaxdB -= delta_db;
if (m_Running)
m_DrawOverlay = true;
else
drawOverlay();
m_PeakHoldValid = false;
m_Yzero = pt.y();
}
}
else if (XAXIS == m_CursorCaptured)
{
if (event->buttons() & (Qt::LeftButton | Qt::MidButton))
{
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::MidButton)
{
m_CenterFreq += delta_hz;
m_DemodCenterFreq += delta_hz;
emit newCenterFreq(m_CenterFreq);
}
else
{
setFftCenterFreq(m_FftCenter + delta_hz);
}
if (m_Running)
m_DrawOverlay = true;
else
drawOverlay();
m_PeakHoldValid = false;
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 overlay 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
m_PeakHoldValid = false;
}
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;
}
}