Add files from zip

2023-10-31 09:22:42 +01:00
parent 6bacdc5f6d
commit 4dae68036f
2788 changed files with 492537 additions and 0 deletions
--- a/examples/realtime/RandomPlot.cpp
+++ b/examples/realtime/RandomPlot.cpp
@@ -0,0 +1,150 @@
+/*****************************************************************************
+ * Qwt Examples - Copyright (C) 2002 Uwe Rathmann
+ * This file may be used under the terms of the 3-clause BSD License
+ *****************************************************************************/
+
+#include "RandomPlot.h"
+#include "ScrollZoomer.h"
+
+#include <QwtPlotGrid>
+#include <QwtPlotCanvas>
+#include <QwtPlotLayout>
+#include <QwtScaleWidget>
+#include <QwtScaleDraw>
+#include <QwtMath>
+
+#include <QPen>
+#include <QTimer>
+
+namespace
+{
+    const unsigned int c_rangeMax = 1000;
+
+    class Zoomer : public ScrollZoomer
+    {
+      public:
+        Zoomer( QWidget* canvas )
+            : ScrollZoomer( canvas )
+        {
+            setRubberBandPen( QPen( Qt::red ) );
+        }
+
+        virtual QwtText trackerTextF( const QPointF& pos ) const QWT_OVERRIDE
+        {
+            QColor bg( Qt::white );
+
+            QwtText text = QwtPlotZoomer::trackerTextF( pos );
+            text.setBackgroundBrush( QBrush( bg ) );
+            return text;
+        }
+
+        virtual void rescale() QWT_OVERRIDE
+        {
+            QwtScaleWidget* scaleWidget = plot()->axisWidget( yAxis() );
+            QwtScaleDraw* sd = scaleWidget->scaleDraw();
+
+            double minExtent = 0.0;
+            if ( zoomRectIndex() > 0 )
+            {
+                // When scrolling in vertical direction
+                // the plot is jumping in horizontal direction
+                // because of the different widths of the labels
+                // So we better use a fixed extent.
+
+                minExtent = sd->spacing() + sd->maxTickLength() + 1;
+                minExtent += sd->labelSize(
+                    scaleWidget->font(), c_rangeMax ).width();
+            }
+
+            sd->setMinimumExtent( minExtent );
+
+            ScrollZoomer::rescale();
+        }
+    };
+}
+
+RandomPlot::RandomPlot( QWidget* parent )
+    : IncrementalPlot( parent )
+    , m_timer( 0 )
+    , m_timerCount( 0 )
+{
+    setFrameStyle( QFrame::NoFrame );
+    setLineWidth( 0 );
+
+    plotLayout()->setAlignCanvasToScales( true );
+
+    QwtPlotGrid* grid = new QwtPlotGrid;
+    grid->setMajorPen( Qt::gray, 0, Qt::DotLine );
+    grid->attach( this );
+
+    setCanvasBackground( QColor( 29, 100, 141 ) ); // nice blue
+
+    setAxisScale( QwtAxis::XBottom, 0, c_rangeMax );
+    setAxisScale( QwtAxis::YLeft, 0, c_rangeMax );
+
+    replot();
+
+    // enable zooming
+
+    ( void ) new Zoomer( canvas() );
+}
+
+QSize RandomPlot::sizeHint() const
+{
+    return QSize( 540, 400 );
+}
+
+void RandomPlot::appendPoint()
+{
+    double x = qwtRand() % c_rangeMax;
+    x += ( qwtRand() % 100 ) / 100;
+
+    double y = qwtRand() % c_rangeMax;
+    y += ( qwtRand() % 100 ) / 100;
+
+    IncrementalPlot::appendPoint( QPointF( x, y ) );
+
+    if ( --m_timerCount <= 0 )
+        stop();
+}
+
+void RandomPlot::append( int timeout, int count )
+{
+    if ( !m_timer )
+    {
+        m_timer = new QTimer( this );
+        connect( m_timer, SIGNAL(timeout()), SLOT(appendPoint()) );
+    }
+
+    m_timerCount = count;
+
+    Q_EMIT running( true );
+    m_timeStamp.start();
+
+    QwtPlotCanvas* plotCanvas = qobject_cast< QwtPlotCanvas* >( canvas() );
+    plotCanvas->setPaintAttribute( QwtPlotCanvas::BackingStore, false );
+
+    m_timer->start( timeout );
+}
+
+void RandomPlot::stop()
+{
+    Q_EMIT elapsed( m_timeStamp.elapsed() );
+
+    if ( m_timer )
+    {
+        m_timer->stop();
+        Q_EMIT running( false );
+    }
+
+    QwtPlotCanvas* plotCanvas = qobject_cast< QwtPlotCanvas* >( canvas() );
+    plotCanvas->setPaintAttribute( QwtPlotCanvas::BackingStore, true );
+}
+
+void RandomPlot::clear()
+{
+    clearPoints();
+    replot();
+}
+
+#include "moc_RandomPlot.cpp"