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https://github.com/GoldenCheetah/GoldenCheetah.git
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2f9130cd76
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.
140 lines
3.0 KiB
C++
140 lines
3.0 KiB
C++
#include <qglobal.h>
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#include <qtimer.h>
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#include <qwt_plot_grid.h>
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#include <qwt_plot_canvas.h>
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#include <qwt_plot_layout.h>
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#include <qwt_scale_widget.h>
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#include <qwt_scale_draw.h>
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#include "scrollzoomer.h"
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#include "randomplot.h"
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const unsigned int c_rangeMax = 1000;
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class Zoomer: public ScrollZoomer
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{
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public:
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Zoomer(QwtPlotCanvas *canvas):
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ScrollZoomer(canvas)
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{
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#if 0
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setRubberBandPen(QPen(Qt::red, 2, Qt::DotLine));
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#else
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setRubberBandPen(QPen(Qt::red));
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#endif
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}
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virtual QwtText trackerTextF(const QPointF &pos) const
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{
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QColor bg(Qt::white);
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QwtText text = QwtPlotZoomer::trackerTextF(pos);
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text.setBackgroundBrush( QBrush( bg ));
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return text;
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}
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virtual void rescale()
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{
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QwtScaleWidget *scaleWidget = plot()->axisWidget(yAxis());
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QwtScaleDraw *sd = scaleWidget->scaleDraw();
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int minExtent = 0;
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if ( zoomRectIndex() > 0 )
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{
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// When scrolling in vertical direction
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// the plot is jumping in horizontal direction
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// because of the different widths of the labels
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// So we better use a fixed extent.
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minExtent = sd->spacing() + sd->maxTickLength() + 1;
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minExtent += sd->labelSize(
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scaleWidget->font(), c_rangeMax).width();
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}
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sd->setMinimumExtent(minExtent);
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ScrollZoomer::rescale();
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}
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};
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RandomPlot::RandomPlot(QWidget *parent):
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IncrementalPlot(parent),
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d_timer(0),
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d_timerCount(0)
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{
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setFrameStyle(QFrame::NoFrame);
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setLineWidth(0);
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setCanvasLineWidth(2);
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plotLayout()->setAlignCanvasToScales(true);
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QwtPlotGrid *grid = new QwtPlotGrid;
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grid->setMajPen(QPen(Qt::gray, 0, Qt::DotLine));
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grid->attach(this);
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setCanvasBackground(QColor(29, 100, 141)); // nice blue
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setAxisScale(xBottom, 0, c_rangeMax);
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setAxisScale(yLeft, 0, c_rangeMax);
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replot();
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// enable zooming
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(void) new Zoomer(canvas());
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}
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QSize RandomPlot::sizeHint() const
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{
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return QSize(540,400);
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}
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void RandomPlot::appendPoint()
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{
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double x = qrand() % c_rangeMax;
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x += ( qrand() % 100 ) / 100;
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double y = qrand() % c_rangeMax;
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y += ( qrand() % 100 ) / 100;
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IncrementalPlot::appendPoint( QPointF( x, y ) );
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if ( --d_timerCount <= 0 )
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stop();
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}
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void RandomPlot::append(int timeout, int count)
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{
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if ( !d_timer )
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{
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d_timer = new QTimer(this);
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connect(d_timer, SIGNAL(timeout()), SLOT(appendPoint()));
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}
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d_timerCount = count;
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Q_EMIT running(true);
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d_timeStamp.start();
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canvas()->setPaintAttribute(QwtPlotCanvas::BackingStore, false);
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d_timer->start(timeout);
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}
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void RandomPlot::stop()
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{
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Q_EMIT elapsed( d_timeStamp.elapsed() );
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if ( d_timer )
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{
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d_timer->stop();
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Q_EMIT running(false);
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}
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canvas()->setPaintAttribute(QwtPlotCanvas::BackingStore, true);
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}
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void RandomPlot::clear()
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{
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clearPoints();
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replot();
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}
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