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https://github.com/GoldenCheetah/GoldenCheetah.git
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c44758c5ad
Upgrade to QWT 6.0.1, but still uses a locally patched copy since support for 8 axes has not been included, despite it being a relatively simple patch. Fixes #634. Fixes #567.
125 lines
3.3 KiB
C++
125 lines
3.3 KiB
C++
#include <stdlib.h>
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#include <qpen.h>
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#include <qwt_plot_layout.h>
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#include <qwt_legend.h>
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#include <qwt_legend_item.h>
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#include <qwt_plot_grid.h>
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#include <qwt_plot_histogram.h>
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#include <qwt_column_symbol.h>
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#include <qwt_series_data.h>
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#include "tvplot.h"
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class Histogram: public QwtPlotHistogram
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{
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public:
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Histogram(const QString &, const QColor &);
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void setColor(const QColor &);
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void setValues(uint numValues, const double *);
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};
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Histogram::Histogram(const QString &title, const QColor &symbolColor):
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QwtPlotHistogram(title)
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{
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setStyle(QwtPlotHistogram::Columns);
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setColor(symbolColor);
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}
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void Histogram::setColor(const QColor &symbolColor)
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{
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QColor color = symbolColor;
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color.setAlpha(180);
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setPen(QPen(Qt::black));
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setBrush(QBrush(color));
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QwtColumnSymbol *symbol = new QwtColumnSymbol(QwtColumnSymbol::Box);
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symbol->setFrameStyle(QwtColumnSymbol::Raised);
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symbol->setLineWidth(2);
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symbol->setPalette(QPalette(color));
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setSymbol(symbol);
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}
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void Histogram::setValues(uint numValues, const double *values)
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{
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QVector<QwtIntervalSample> samples(numValues);
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for ( uint i = 0; i < numValues; i++ )
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{
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QwtInterval interval(double(i), i + 1.0);
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interval.setBorderFlags(QwtInterval::ExcludeMaximum);
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samples[i] = QwtIntervalSample(values[i], interval);
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}
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setData(new QwtIntervalSeriesData(samples));
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}
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TVPlot::TVPlot(QWidget *parent):
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QwtPlot(parent)
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{
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setTitle("Watching TV during a weekend");
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setCanvasBackground(QColor(Qt::gray));
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plotLayout()->setAlignCanvasToScales(true);
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setAxisTitle(QwtPlot::yLeft, "Number of People");
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setAxisTitle(QwtPlot::xBottom, "Number of Hours");
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QwtLegend *legend = new QwtLegend;
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legend->setItemMode(QwtLegend::CheckableItem);
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insertLegend(legend, QwtPlot::RightLegend);
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populate();
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connect(this, SIGNAL(legendChecked(QwtPlotItem *, bool)),
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SLOT(showItem(QwtPlotItem *, bool)));
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replot(); // creating the legend items
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QwtPlotItemList items = itemList(QwtPlotItem::Rtti_PlotHistogram);
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for ( int i = 0; i < items.size(); i++ )
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{
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if ( i == 0 )
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{
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QwtLegendItem *legendItem = (QwtLegendItem *)legend->find(items[i]);
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if ( legendItem )
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legendItem->setChecked(true);
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items[i]->setVisible(true);
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}
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else
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items[i]->setVisible(false);
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}
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setAutoReplot(true);
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}
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void TVPlot::populate()
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{
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QwtPlotGrid *grid = new QwtPlotGrid;
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grid->enableX(false);
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grid->enableY(true);
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grid->enableXMin(false);
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grid->enableYMin(false);
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grid->setMajPen(QPen(Qt::black, 0, Qt::DotLine));
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grid->attach(this);
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const double juneValues[] = { 7, 19, 24, 32, 10, 5, 3 };
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const double novemberValues[] = { 4, 15, 22, 34, 13, 8, 4 };
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Histogram *histogramJune = new Histogram("Summer", Qt::red);
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histogramJune->setValues(
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sizeof(juneValues) / sizeof(double), juneValues);
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histogramJune->attach(this);
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Histogram *histogramNovember = new Histogram("Winter", Qt::blue);
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histogramNovember->setValues(
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sizeof(novemberValues) / sizeof(double), novemberValues);
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histogramNovember->attach(this);
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}
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void TVPlot::showItem(QwtPlotItem *item, bool on)
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{
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item->setVisible(on);
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}
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