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#include "wfplot.h"
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#include <QFontInfo>
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WFPlot::WFPlot(QWidget *parent) :
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QWidget(parent)
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{
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// Create Fonts
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QFont font;
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font = QFont(this->fontInfo().family(), FONT_SIZE_WAVEFORM_TITLE, QFont::Light);
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customPlot = new QCustomPlot();
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mainLayout = new QVBoxLayout();
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customPlot->setInteractions(QCustomPlot::iRangeDrag | QCustomPlot::iRangeZoom | QCustomPlot::iSelectAxes |
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QCustomPlot::iSelectLegend | QCustomPlot::iSelectPlottables | QCustomPlot::iSelectTitle);
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customPlot->setRangeDrag(Qt::Horizontal|Qt::Vertical);
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customPlot->setRangeZoom(Qt::Horizontal|Qt::Vertical);
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customPlot->xAxis->setRange(0, XMAX);
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customPlot->yAxis->setRange(-YMAX, YMAX);
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customPlot->setTitleFont(font);
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//customPlot->setupFullAxesBox();
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customPlot->addGraph();
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mainLayout->addWidget(customPlot);
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this->setLayout(mainLayout);
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// connect slot that ties some axis selections together (especially opposite axes):
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connect(customPlot, SIGNAL(selectionChangedByUser()), this, SLOT(selectionChanged()));
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// connect slots that takes care that when an axis is selected, only that direction can be dragged and zoomed:
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connect(customPlot, SIGNAL(mousePress(QMouseEvent*)), this, SLOT(mousePress()));
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connect(customPlot, SIGNAL(mouseWheel(QWheelEvent*)), this, SLOT(mouseWheel()));
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}
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void WFPlot::selectionChanged()
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{
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/*
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normally, axis base line, axis tick labels and axis labels are selectable separately, but we want
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the user only to be able to select the axis as a whole, so we tie the selected states of the tick labels
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and the axis base line together. However, the axis label shall be selectable individually.
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The selection state of the left and right axes shall be synchronized as well as the state of the
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bottom and top axes.
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Further, we want to synchronize the selection of the graphs with the selection state of the respective
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legend item belonging to that graph. So the user can select a graph by either clicking on the graph itself
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or on its legend item.
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*/
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// make top and bottom axes be selected synchronously, and handle axis and tick labels as one selectable object:
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if (customPlot->xAxis->selected().testFlag(QCPAxis::spAxis) || customPlot->xAxis->selected().testFlag(QCPAxis::spTickLabels) ||
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customPlot->xAxis2->selected().testFlag(QCPAxis::spAxis) || customPlot->xAxis2->selected().testFlag(QCPAxis::spTickLabels))
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{
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customPlot->xAxis2->setSelected(QCPAxis::spAxis|QCPAxis::spTickLabels);
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customPlot->xAxis->setSelected(QCPAxis::spAxis|QCPAxis::spTickLabels);
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}
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// make left and right axes be selected synchronously, and handle axis and tick labels as one selectable object:
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if (customPlot->yAxis->selected().testFlag(QCPAxis::spAxis) || customPlot->yAxis->selected().testFlag(QCPAxis::spTickLabels) ||
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customPlot->yAxis2->selected().testFlag(QCPAxis::spAxis) || customPlot->yAxis2->selected().testFlag(QCPAxis::spTickLabels))
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{
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customPlot->yAxis2->setSelected(QCPAxis::spAxis|QCPAxis::spTickLabels);
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customPlot->yAxis->setSelected(QCPAxis::spAxis|QCPAxis::spTickLabels);
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}
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// synchronize selection of graphs with selection of corresponding legend items:
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for (int i=0; i<customPlot->graphCount(); ++i)
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{
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QCPGraph *graph = customPlot->graph(i);
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QCPPlottableLegendItem *item = customPlot->legend->itemWithPlottable(graph);
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if (item->selected() || graph->selected())
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{
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item->setSelected(true);
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graph->setSelected(true);
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}
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}
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}
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void WFPlot::mousePress()
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{
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// if an axis is selected, only allow the direction of that axis to be dragged
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// if no axis is selected, both directions may be dragged
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if (customPlot->xAxis->selected().testFlag(QCPAxis::spAxis))
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customPlot->setRangeDrag(customPlot->xAxis->orientation());
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else if (customPlot->yAxis->selected().testFlag(QCPAxis::spAxis))
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customPlot->setRangeDrag(customPlot->yAxis->orientation());
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else
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customPlot->setRangeDrag(Qt::Horizontal|Qt::Vertical);
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}
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void WFPlot::mouseWheel()
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{
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// if an axis is selected, only allow the direction of that axis to be zoomed
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// if no axis is selected, both directions may be zoomed
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if (customPlot->xAxis->selected().testFlag(QCPAxis::spAxis))
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customPlot->setRangeZoom(customPlot->xAxis->orientation());
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else if (customPlot->yAxis->selected().testFlag(QCPAxis::spAxis))
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customPlot->setRangeZoom(customPlot->yAxis->orientation());
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else
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customPlot->setRangeZoom(Qt::Horizontal|Qt::Vertical);
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}
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void WFPlot::displayOnPlot(short *data, unsigned int size)
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{
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QVector<double> x(size), y(size);
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for (unsigned int i=0; i<size; ++i)
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{
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x[i] = i;
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y[i] = (double) data[i];
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}
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customPlot->graph(0)->setData(x, y);
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customPlot->replot();
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}
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