void PlotMatrix::alignVAxes( int col, int axis )
{
if ( axis != QwtPlot::yLeft && axis != QwtPlot::yRight )
return;
double maxExtent = 0;
for ( int row = 0; row < numRows(); row++ )
{
QwtPlot *p = plot( row, col );
if ( p )
{
QwtScaleWidget *scaleWidget = p->axisWidget( axis );
QwtScaleDraw *sd = scaleWidget->scaleDraw();
sd->setMinimumExtent( 0.0 );
const double extent = sd->extent( scaleWidget->font() );
if ( extent > maxExtent )
maxExtent = extent;
}
}
for ( int row = 0; row < numRows(); row++ )
{
QwtPlot *p = plot( row, col );
if ( p )
{
QwtScaleWidget *scaleWidget = p->axisWidget( axis );
scaleWidget->scaleDraw()->setMinimumExtent( maxExtent );
}
}
}
//---------------------------------------------------------------------------
void Plots::alignYAxes()
{
double maxExtent = 0;
for ( size_t streamPos = 0; streamPos < m_fileInfoData->Stats.size(); streamPos++ )
if ( m_fileInfoData->Stats[streamPos] && m_plots[streamPos] )
{
size_t type = m_fileInfoData->Stats[streamPos]->Type_Get();
for ( int group = 0; group < PerStreamType[type].CountOfGroups; group++ )
if (m_plots[streamPos][group] && m_plots[streamPos] )
{
QwtScaleWidget *scaleWidget = m_plots[streamPos][group]->axisWidget( QwtPlot::yLeft );
QwtScaleDraw* scaleDraw = scaleWidget->scaleDraw();
scaleDraw->setMinimumExtent( 0.0 );
if ( m_plots[streamPos][group] && m_plots[streamPos][group]->isVisibleTo( this ) )
{
const double extent = scaleDraw->extent( scaleWidget->font() );
maxExtent = qMax( extent, maxExtent );
}
}
maxExtent += 3; // margin
}
for ( size_t streamPos = 0; streamPos < m_fileInfoData->Stats.size(); streamPos++ )
if ( m_fileInfoData->Stats[streamPos] && m_plots[streamPos] )
{
size_t type = m_fileInfoData->Stats[streamPos]->Type_Get();
for ( int group = 0; group < PerStreamType[type].CountOfGroups; group++ )
if (m_plots[streamPos][group])
{
QwtScaleWidget *scaleWidget = m_plots[streamPos][group]->axisWidget( QwtPlot::yLeft );
scaleWidget->scaleDraw()->setMinimumExtent( maxExtent );
}
}
}
Plot::Plot(QWidget *parent):
QwtPlot(parent)
{
setTitle("Interactive Plot");
setCanvasColor(Qt::darkCyan);
QwtPlotGrid *grid = new QwtPlotGrid;
grid->setMajPen(QPen(Qt::white, 0, Qt::DotLine));
grid->attach(this);
// axes
setAxisScale(QwtPlot::xBottom, 0.0, 100.0);
setAxisScale(QwtPlot::yLeft, 0.0, 100.0);
// Avoid jumping when label with 3 digits
// appear/disappear when scrolling vertically
QwtScaleDraw *sd = axisScaleDraw(QwtPlot::yLeft);
sd->setMinimumExtent( sd->extent(axisWidget(QwtPlot::yLeft)->font()));
plotLayout()->setAlignCanvasToScales(true);
insertCurve(Qt::Vertical, Qt::blue, 30.0);
insertCurve(Qt::Vertical, Qt::magenta, 70.0);
insertCurve(Qt::Horizontal, Qt::yellow, 30.0);
insertCurve(Qt::Horizontal, Qt::white, 70.0);
replot();
// ------------------------------------
// We add a color bar to the left axis
// ------------------------------------
QwtScaleWidget *scaleWidget = (QwtScaleWidget *)axisWidget(yLeft);
scaleWidget->setMargin(10); // area for the color bar
d_colorBar = new ColorBar(Qt::Vertical, scaleWidget);
d_colorBar->setRange(Qt::red, Qt::darkBlue);
d_colorBar->setFocusPolicy(Qt::TabFocus);
connect(d_colorBar, SIGNAL(selected(const QColor &)),
SLOT(setCanvasColor(const QColor &)));
// we need the resize events, to lay out the color bar
scaleWidget->installEventFilter(this);
// ------------------------------------
// We add a wheel to the canvas
// ------------------------------------
d_wheel = new QwtWheel(canvas());
d_wheel->setOrientation(Qt::Vertical);
d_wheel->setRange(-100, 100);
d_wheel->setValue(0.0);
d_wheel->setMass(0.2);
d_wheel->setTotalAngle(4 * 360.0);
connect(d_wheel, SIGNAL(valueChanged(double)),
SLOT(scrollLeftAxis(double)));
// we need the resize events, to lay out the wheel
canvas()->installEventFilter(this);
d_colorBar->setWhatsThis(
"Selecting a color will change the background of the plot.");
scaleWidget->setWhatsThis(
"Selecting a value at the scale will insert a new curve.");
d_wheel->setWhatsThis(
"With the wheel you can move the visible area.");
axisWidget(xBottom)->setWhatsThis(
"Selecting a value at the scale will insert a new curve.");
}
void PlotMatrix::alignAxes( int rowOrColumn, int axis )
{
if ( axis == QwtPlot::yLeft || axis == QwtPlot::yRight )
{
double maxExtent = 0;
for ( int row = 0; row < numRows(); row++ )
{
QwtPlot *p = plotAt( row, rowOrColumn );
if ( p )
{
QwtScaleWidget *scaleWidget = p->axisWidget( axis );
QwtScaleDraw *sd = scaleWidget->scaleDraw();
sd->setMinimumExtent( 0.0 );
const double extent = sd->extent( scaleWidget->font() );
if ( extent > maxExtent )
maxExtent = extent;
}
}
for ( int row = 0; row < numRows(); row++ )
{
QwtPlot *p = plotAt( row, rowOrColumn );
if ( p )
{
QwtScaleWidget *scaleWidget = p->axisWidget( axis );
scaleWidget->scaleDraw()->setMinimumExtent( maxExtent );
}
}
}
else
{
double maxExtent = 0;
for ( int col = 0; col < numColumns(); col++ )
{
QwtPlot *p = plotAt( rowOrColumn, col );
if ( p )
{
QwtScaleWidget *scaleWidget = p->axisWidget( axis );
QwtScaleDraw *sd = scaleWidget->scaleDraw();
sd->setMinimumExtent( 0.0 );
const double extent = sd->extent( scaleWidget->font() );
if ( extent > maxExtent )
maxExtent = extent;
}
}
for ( int col = 0; col < numColumns(); col++ )
{
QwtPlot *p = plotAt( rowOrColumn, col );
if ( p )
{
QwtScaleWidget *scaleWidget = p->axisWidget( axis );
scaleWidget->scaleDraw()->setMinimumExtent( maxExtent );
}
}
}
}