//---------------------------------------------------------------------------
void Plots::Plots_Create(PlotType Type)
{
// Paddings
if (paddings[Type]==NULL)
{
paddings[Type]=new QWidget(this);
paddings[Type]->setVisible(false);
}
// General design of plot
QwtPlot* plot = new QwtPlot(this);
plot->setVisible(false);
plot->setMinimumHeight(1);
plot->enableAxis(QwtPlot::xBottom, Type==PlotType_Axis);
plot->setAxisMaxMajor(QwtPlot::yLeft, 0);
plot->setAxisMaxMinor(QwtPlot::yLeft, 0);
plot->setAxisScale(QwtPlot::xBottom, 0, FileInfoData->Videos[0]->x_Max[XAxis_Kind_index]);
if (PerPlotGroup[Type].Count>3)
plot->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
// Plot grid
QwtPlotGrid *grid = new QwtPlotGrid();
grid->enableXMin(true);
grid->enableYMin(true);
grid->setMajorPen(Qt::darkGray, 0, Qt::DotLine );
grid->setMinorPen(Qt::gray, 0 , Qt::DotLine );
grid->attach(plot);
// Plot curves
for(unsigned j=0; j<PerPlotGroup[Type].Count; ++j)
{
plotsCurves[Type][j] = new QwtPlotCurve(PerPlotName[PerPlotGroup[Type].Start+j].Name);
QColor c;
switch (PerPlotGroup[Type].Count)
{
case 1 :
switch (Type)
{
case PlotType_YDiff: c=Qt::darkGreen; break;
case PlotType_UDiff: c=Qt::darkBlue; break;
case PlotType_VDiff: c=Qt::darkRed; break;
default: c=Qt::black;
}
break;
case 2 :
switch (j)
{
case 0: c=Qt::darkGreen; break;
case 1: c=Qt::darkRed; break;
default: c=Qt::black;
}
break;
case 3 :
switch (j)
{
case 0: c=Qt::darkRed; break;
case 1: c=Qt::darkBlue; break;
case 2: c=Qt::darkGreen; break;
default: c=Qt::black;
}
break;
case 5 :
switch (j)
{
case 0: c=Qt::red; break;
case 1: c=QColor::fromRgb(0x00, 0x66, 0x00); break; //Qt::green
case 2: c=Qt::black; break;
case 3: c=Qt::green; break;
case 4: c=Qt::red; break;
default: c=Qt::black;
}
break;
default: c=Qt::black;
}
plotsCurves[Type][j]->setPen(c);
plotsCurves[Type][j]->setRenderHint(QwtPlotItem::RenderAntialiased);
plotsCurves[Type][j]->setZ(plotsCurves[Type][j]->z()-j); //Invert data order (e.g. MAX before MIN)
plotsCurves[Type][j]->attach(plot);
}
// Legends
QwtLegend *legend = new QwtLegend(this);
legend->setVisible(false);
legend->setMinimumHeight(1);
legend->setMaxColumns(1);
QFont Font=legend->font();
#ifdef _WIN32
Font.setPointSize(6);
#else // _WIN32
Font.setPointSize(8);
#endif //_WIN32
legend->setFont(Font);
connect(plot, SIGNAL(legendDataChanged(const QVariant &, const QList<QwtLegendData> &)), legend, SLOT(updateLegend(const QVariant &, const QList<QwtLegendData> &)));
plot->updateLegend();
// Assignment
plots[Type]=plot;
legends[Type]=legend;
// Pickers
plotsPickers[Type] = new QwtPlotPicker( QwtPlot::xBottom, QwtPlot::yLeft, QwtPlotPicker::CrossRubberBand, QwtPicker::AlwaysOn, plots[Type]->canvas() );
plotsPickers[Type]->setStateMachine( new QwtPickerDragPointMachine () );
plotsPickers[Type]->setRubberBandPen( QColor( Qt::green ) );
plotsPickers[Type]->setTrackerPen( QColor( Qt::white ) );
connect(plotsPickers[Type], SIGNAL(moved(const QPointF&)), SLOT(plot_moved(const QPointF&)));
connect(plotsPickers[Type], SIGNAL(selected(const QPointF&)), SLOT(plot_moved(const QPointF&)));
// Marker
QwtPlotMarker* plotMarker=new QwtPlotMarker;
plotMarker->setLineStyle(QwtPlotMarker::VLine);
plotMarker->setLinePen(QPen(Qt::magenta, 1));
plotMarker->setXValue(0);
plotMarker->attach(plot);
plotsMarkers[Type]=plotMarker;
}
/*!
\brief Insert a legend
If the position legend is \c QwtPlot::LeftLegend or \c QwtPlot::RightLegend
the legend will be organized in one column from top to down.
Otherwise the legend items will be placed in a table
with a best fit number of columns from left to right.
insertLegend() will set the plot widget as parent for the legend.
The legend will be deleted in the destructor of the plot or when
another legend is inserted.
Legends, that are not inserted into the layout of the plot widget
need to connect to the legendDataChanged() signal. Calling updateLegend()
initiates this signal for an initial update. When the application code
wants to implement its own layout this also needs to be done for
rendering plots to a document ( see QwtPlotRenderer ).
\param legend Legend
\param pos The legend's position. For top/left position the number
of columns will be limited to 1, otherwise it will be set to
unlimited.
\param ratio Ratio between legend and the bounding rectangle
of title, canvas and axes. The legend will be shrunk
if it would need more space than the given ratio.
The ratio is limited to ]0.0 .. 1.0]. In case of <= 0.0
it will be reset to the default ratio.
The default vertical/horizontal ratio is 0.33/0.5.
\sa legend(), QwtPlotLayout::legendPosition(),
QwtPlotLayout::setLegendPosition()
*/
void QwtPlot::insertLegend( QwtAbstractLegend *legend,
QwtPlot::LegendPosition pos, double ratio )
{
d_data->layout->setLegendPosition( pos, ratio );
if ( legend != d_data->legend )
{
if ( d_data->legend && d_data->legend->parent() == this )
delete d_data->legend;
d_data->legend = legend;
if ( d_data->legend )
{
connect( this,
SIGNAL( legendDataChanged(
const QVariant &, const QList<QwtLegendData> & ) ),
d_data->legend,
SLOT( updateLegend(
const QVariant &, const QList<QwtLegendData> & ) )
);
if ( d_data->legend->parent() != this )
d_data->legend->setParent( this );
qwtEnableLegendItems( this, false );
updateLegend();
qwtEnableLegendItems( this, true );
QwtLegend *lgd = qobject_cast<QwtLegend *>( legend );
if ( lgd )
{
switch ( d_data->layout->legendPosition() )
{
case LeftLegend:
case RightLegend:
{
if ( lgd->maxColumns() == 0 )
lgd->setMaxColumns( 1 ); // 1 column: align vertical
break;
}
case TopLegend:
case BottomLegend:
{
lgd->setMaxColumns( 0 ); // unlimited
break;
}
default:
break;
}
}
QWidget *previousInChain = NULL;
switch ( d_data->layout->legendPosition() )
{
case LeftLegend:
{
previousInChain = axisWidget( QwtPlot::xTop );
break;
}
case TopLegend:
{
previousInChain = this;
break;
}
case RightLegend:
{
previousInChain = axisWidget( QwtPlot::yRight );
break;
}
case BottomLegend:
{
previousInChain = footerLabel();
break;
}
}
if ( previousInChain )
qwtSetTabOrder( previousInChain, legend, true );
}
}
