tempo-plotter Changeset - c35baca48756 · protofusion repositories

Changeset - c35baca48756

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scrollbar-exp

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Hasan Yavuz ÖZDERYA - 8 years ago 2017-08-16 12:28:53
hy@ozderya.net

fix auto show symbols

2 files changed with 5 insertions and 1 deletions:

src/plot.cpp

src/plot.h

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src/plot.cpp

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@@ @@ -18,48 +18,49 @@ @@
 */
 #include <QRectF>
 #include <QKeySequence>
 #include <QColor>
 #include <qwt_symbol.h>
 #include <qwt_plot_curve.h>
 #include <math.h>
 #include <algorithm>
 #include "plot.h"
 #include "utils.h"
 static const int SYMBOL_SHOW_AT_WIDTH = 5;
 static const int SYMBOL_SIZE_MAX = 7;
 Plot::Plot(QWidget* parent) :
     QwtPlot(parent),
     zoomer(this->canvas(), false),
     sZoomer(this, &zoomer)
+{
     isAutoScaled = true;
     symbolSize = 0;
     numOfSamples = 1;
     plotWidth = 1;
     showSymbols = Plot::ShowSymbolsAuto;
     QObject::connect(&zoomer, &Zoomer::unzoomed, this, &Plot::unzoomed);
     zoomer.setZoomBase();
     grid.attach(this);
     legend.attach(this);
     showGrid(false);
     darkBackground(false);
     snapshotOverlay = NULL;
     connect(&zoomer, &QwtPlotZoomer::zoomed,
             [this](const QRectF &rect)
+            {
                 onXScaleChanged();
             });
     connect(this, &QwtPlot::itemAttached,
             [this](QwtPlotItem *plotItem, bool on)
+            {
                 if (symbolSize) updateSymbols();
             });
@@ @@ -281,75 +282,77 @@ void Plot::setSymbols(ShowSymbols shown) @@
+    {
         symbolSize = 0;
+    }
     updateSymbols();
     replot();
+}
 void Plot::onXScaleChanged()
+{
     if (showSymbols == Plot::ShowSymbolsAuto)
+    {
         calcSymbolSize();
         updateSymbols();
+    }
+}
 void Plot::calcSymbolSize()
+{
     auto sw = axisWidget(QwtPlot::xBottom);
     auto paintDist = sw->scaleDraw()->scaleMap().pDist();
     auto scaleDist = sw->scaleDraw()->scaleMap().sDist();
     auto fullScaleDist = zoomer.zoomBase().width();
     auto zoomRate = fullScaleDist / scaleDist;
     float samplesInView = numOfSamples / zoomRate;
     float plotWidthNumSamp = abs(numOfSamples * plotWidth / (_xMax - _xMin));
     float samplesInView = plotWidthNumSamp / zoomRate;
     int symDisPx = round(paintDist / samplesInView);
     if (symDisPx < SYMBOL_SHOW_AT_WIDTH)
+    {
         symbolSize = 0;
+    }
     else
+    {
         symbolSize = std::min(SYMBOL_SIZE_MAX, symDisPx-SYMBOL_SHOW_AT_WIDTH+1);
+    }
+}
 void Plot::updateSymbols()
+{
     const QwtPlotItemList curves = itemList( QwtPlotItem::Rtti_PlotCurve );
     if (curves.size() > 0)
+    {
         for (int i = 0; i < curves.size(); i++)
+        {
             QwtSymbol* symbol = NULL;
             QwtPlotCurve* curve = static_cast<QwtPlotCurve*>(curves[i]);
             if (symbolSize)
+            {
                 symbol = new QwtSymbol(QwtSymbol::Ellipse,
                                        canvasBackground(),
                                        curve->pen(),
                                        QSize(symbolSize, symbolSize));
+            }
             curve->setSymbol(symbol);
+        }
+    }
+}
 void Plot::resizeEvent(QResizeEvent * event)
+{
     QwtPlot::resizeEvent(event);
     onXScaleChanged();
+}
 void Plot::setNumOfSamples(unsigned value)
+{
     numOfSamples = value;
     onXScaleChanged();
+}
 void Plot::setPlotWidth(double width)
+{
     plotWidth = width;
     zoomer.setHViewSize(width);
+}

src/plot.h

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@@ @@ -63,44 +63,45 @@ public slots: @@
     void setYAxis(bool autoScaled, double yMin = 0, double yMax = 1);
     void setXAxis(double xMin, double xMax);
     void setSymbols(ShowSymbols shown);
     /**
      * Displays an animation for snapshot.
+     *
      * @param light show a light colored (white) animation or the opposite
      */
     void flashSnapshotOverlay(bool light);
     void setNumOfSamples(unsigned value);
     void setPlotWidth(double width);
 protected:
     /// update the display of symbols depending on `symbolSize`
     void updateSymbols();
 private:
     bool isAutoScaled;
     double yMin, yMax;
     double _xMin, _xMax;
     unsigned numOfSamples;
     double plotWidth;
     int symbolSize;
     Zoomer zoomer;
     ScaleZoomer sZoomer;
     QwtPlotGrid grid;
     PlotSnapshotOverlay* snapshotOverlay;
     QwtPlotLegendItem legend;
     QwtPlotTextLabel demoIndicator;
     QwtPlotTextLabel noChannelIndicator;
     ShowSymbols showSymbols;
     void resetAxes();
     void resizeEvent(QResizeEvent * event);
     void calcSymbolSize();
 private slots:
     void unzoomed();
     void onXScaleChanged();
 };
 #endif // PLOT_H

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